CN113113909B - Self-adaptive stability control method and device for multi-type power plant station sending-out system - Google Patents

Self-adaptive stability control method and device for multi-type power plant station sending-out system Download PDF

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CN113113909B
CN113113909B CN202110324527.XA CN202110324527A CN113113909B CN 113113909 B CN113113909 B CN 113113909B CN 202110324527 A CN202110324527 A CN 202110324527A CN 113113909 B CN113113909 B CN 113113909B
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power
station
cutting
stability control
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CN113113909A (en
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朱泽翔
张建新
李诗旸
杨欢欢
付超
徐光虎
吴为
邱建
杨荣照
黄磊
谢宇翔
毛田
刘宇明
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CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
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China Southern Power Grid Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Abstract

The invention discloses a self-adaptive stability control method of a multi-type power plant station sending-out system, which comprises the following steps: the safety and stability control master station receives unit information uploaded by various power plant stations; when the safety and stability control information station monitors that a sending-out system has a fault, the safety and stability control master station receives the power-off amount sent by the safety and stability control information station and calculates a new energy starting state value; calculating the generator tripping amount of each type of power plant station according to the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a fire power plant station, a water power plant station, a wind power plant station and a light power plant station; selecting thermal power and hydroelectric generating sets corresponding to all stations according to the total water-fire cutting amount to cut off; and cutting out the fans or photovoltaic power generation units of the corresponding stations according to the wind power and photovoltaic cutting amount of each station. The invention adaptively and dynamically adjusts the safety and stability control strategy according to the real-time running state of the multi-type power plant station so as to solve the stability problem of the multi-type power plant station after the system is sent out.

Description

Self-adaptive stability control method and device for multi-type power plant station sending-out system
Technical Field
The invention relates to the technical field of electromagnetic transient simulation calculation, in particular to a self-adaptive stability control method and device for a multi-type power plant station sending-out system.
Background
In order to achieve the aims of carbon peak reaching and carbon neutralization, the renewable energy power plant station is put into operation on a large scale. And the new energy power plant stations such as wind power, photovoltaic and the like are generally sent out together with the traditional thermal power plant stations and hydropower plant stations on a large scale, so that the safety, reliability and stability of the renewable energy sources are ensured to be fully consumed and sent out of the regional system. When a sending system has serious faults, the traditional unit and the matched new energy power plant station are required to be removed, so that the safe and stable operation of the system is ensured. However, the traditional power supply and the new energy power supply have different occupation ratios, different stability problems are caused, and different control measures need to be taken.
In order to solve the problems, the power-off modes of most of the existing safety and stability control strategies are fixed in advance, and the control strategies cannot be selected in a self-adaptive mode according to the power-on modes of different types of power plant stations. In addition, the safety and stability control system ensures safe and stable operation of a power grid by cutting off the minimum power generation unit of the power plant station, the capacity of the power generation unit of the new energy plant station is far smaller than that of a traditional power generation unit, and the current method of enabling the whole plant station or a current collection circuit to be equivalent to a single power generation unit by the new energy power plant station undoubtedly causes a large amount of wind and light abandonment problems after safety and stability control.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a method and an apparatus for adaptively and dynamically adjusting a safety and stability control strategy according to a real-time operation state of multiple types of power plants, so as to solve a stability problem after a fault occurs in a multiple types of power plant delivery system.
In order to solve the above technical problem, an embodiment of the present invention provides an adaptive stability control method for a multi-type power plant station outbound system, which is applied to a power generation system, where the power generation system includes various power plant stations connected to a safety and stability control master station and a safety and stability control information station, and the method includes:
the safety and stability control master station receives unit information uploaded by various power plant stations;
when the safety and stability control information station monitors that a sending-out system has a fault, the safety and stability control master station receives the power-off amount sent by the safety and stability control information station and calculates a new energy starting state value;
calculating the generator tripping amount of each type of power plant station according to the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a fire power plant station, a water power plant station, a wind power plant station and a light power plant station;
selecting thermal power and hydroelectric generating sets corresponding to all stations according to the total water-fire cutting amount to cut off;
and cutting out the fans or power generation units of the corresponding stations according to the wind power and photovoltaic cutting amount of each station.
Further, in the unit information: thermal power plant station is marked as Ai, and thermal power unit is marked as AijThermal power generating unitThe power is denoted PAij，i＝1,2,3..nA，j＝1,2,3..nAi，nAIndicates the total number of thermal power plant stations accessed, nAiRepresenting the total number of the switchable units of the thermal power plant station Ai; station of hydroelectric power plant is marked as Bi, and hydroelectric generating set is marked as BijThe power of the corresponding hydroelectric generating set is recorded as PBij，i＝1,2,3..nB，j＝1,2,3..nBi，nBIndicates the total number of stations accessed to the hydroelectric power plant, nBiRepresenting the number of Bi master units of the hydroelectric power plant station; the wind power plant is denoted Ci and the wind turbine is denoted CijThe corresponding wind turbine power is recorded as PCij，i＝1,2,3..nC，j＝1,2,3..nCi，nCRepresenting the total number of stations accessed to the wind power plant, nCiRepresenting the total number of the switchable units of the wind power plant Ci; photovoltaic power plant station notation DiPhotovoltaic power generation unit DijThe corresponding photovoltaic power generation unit power is marked as PDij，i＝1,2,3..nD，j＝1,2,3..nDi，nDRepresents the total number of accessed photovoltaic power plant stations, nDiRepresenting a photovoltaic power plant DiThe total number of the switchable units.
Further, the safety and stability control master station receives the power outage amount sent by the safety and stability control information station, and calculates a new energy startup state value, specifically:
the safety and stability control master station receives the generator tripping amount Dp sent by the safety and stability control information station, and calculates the new energy starting state value F according to the generated power of various types of power plant stations before the fault;
the model for obtaining the new energy starting state value is,
F＝PCDor
Figure GDA0003613093060000021
Figure GDA0003613093060000031
Figure GDA0003613093060000032
Wherein, PCDIs the sum of the output power of all wind power and photovoltaic power units, PABThe power is the sum of the output power of all thermal power generating units and hydroelectric generating units.
Further, the machine cutting amount of each type of power plant station is calculated through the new energy starting state value and the corresponding machine cutting model, and the method specifically comprises the following steps:
when the new energy starting state value F is smaller than the second starting state value, calculating the total starting cutting quantity Dp of the hydroelectric generating set through the first cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the new energy starting state value F is larger than the second starting state value and smaller than the first starting state value, calculating the total machine cutting amount Dp of the hydroelectric generating set through the second machine cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the starting state value of the new energy is larger than the first starting state value, calculating the total power cutting amount Dp of the hydroelectric generating set through a third power cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD。
Further, the thermal power and hydroelectric generating sets corresponding to each plant are selected to be cut according to the total water-fire cutting amount, and the method specifically comprises the following steps:
if the total cutting quantity Dp of the water-fire electric machine setABLess than or equal to the sum P of all hydroelectric generating setsBSelecting corresponding units as cutting-off units in turn according to the serial numbers of the thermal power plant and the hydroelectric generating sets until the sum of the generated power of the cut-off hydroelectric generating sets is larger than the total cutting-off quantity Dp of the hydroelectric generating setsABUntil the end;
if the total cutting quantity Dp of the water-fire electric machine setABIs greater thanHaving sum P of hydroelectric power unitsBAll hydroelectric generating sets are used as cutting-off generating sets, corresponding generating sets are selected as cutting-off generating sets in turn according to numbers of thermal power plant stations and thermal power generating sets until the sum of the power of the cut-off water and the power of the thermal power generating sets is larger than the total cutting-off quantity Dp of the thermal power generating setsABUntil now.
Further, according to the wind power and photovoltaic cutting amount of each plant, cutting off the fans or power generation units of the corresponding plant, specifically: after the safety and stability control master station determines the water, fire and electricity cutting unit and the cutting amount of each wind power and photovoltaic power plant,
sending a generator tripping command of a corresponding generator set to a thermal power plant and hydraulic power plant station stability control execution station to cut off the corresponding generator set;
sending corresponding generator tripping amount Dp to wind power and photovoltaic power plant station stability control execution stationCiAnd DpDiAnd selecting the wind generating set and the photovoltaic generating unit to be cut according to the machine cutting amount and the numbering sequence of the generating sets or the generating units and cutting the wind generating set and the photovoltaic generating unit.
Furthermore, the model for obtaining the new energy starting state value is that,
F＝PCDor
Figure GDA0003613093060000041
Figure GDA0003613093060000042
Figure GDA0003613093060000043
Wherein, PCDIs the sum of the output power of all wind power and photovoltaic power units, PABThe power is the sum of the output power of all thermal power generating units and hydroelectric generating units.
Further, the first tangent model is:
DpAB＝min(Dp,PA+PB)
Figure GDA0003613093060000044
Figure GDA0003613093060000045
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
Further, the second cutting machine model is:
Figure GDA0003613093060000046
Figure GDA0003613093060000051
Figure GDA0003613093060000052
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresents the sum of the generated power of all the photovoltaic power generation units.
Further, the third cutting machine model is:
Figure GDA0003613093060000053
Figure GDA0003613093060000054
DpAB＝max(Dp-PC-PD,0)
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
In order to solve the above technical problem, an embodiment of the present invention further provides an adaptive stability control apparatus for a multi-type power plant station sending-out system, which is applied to a power generation system, wherein the power generation system includes various types of power plant stations connected to a safety and stability control master station and a safety and stability control information station, and the apparatus includes:
the receiving module is used for receiving the unit information uploaded by each type of power plant station by the safety and stability control master station;
the judging module is used for receiving the switching amount sent by the safety and stability control information station and calculating a new energy starting state value when the safety and stability control information station monitors that the sending-out system has a fault;
the calculation module is used for calculating the generator tripping amount of each type of power plant station through the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a fire power plant station, a water power plant station, a wind power plant station and a light power plant station;
the first cutting module is used for selecting thermal power and hydroelectric generating sets corresponding to all stations to cut off according to the total water-fire cutting amount;
and the second cutting module is used for cutting the fans or photovoltaic power generation units of the corresponding plant stations according to the wind power and photovoltaic cutting amount of each plant station.
Compared with the prior art, the embodiment of the invention provides a self-adaptive stability control method of a multi-type power plant station sending-out system, wherein a safety and stability control master station receives unit information uploaded by various power plant stations; when the safety and stability control information station monitors that a sending-out system has a fault, the safety and stability control master station receives the power-off amount sent by the safety and stability control information station and calculates a new energy starting state value; calculating the generator tripping amount of each type of power plant station according to the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a water-fire power plant station, a wind power plant station and a light power plant station; selecting thermal power and hydroelectric generating sets corresponding to all stations according to the total water-fire cutting amount to cut off; and cutting out the fans or power generation units of the corresponding stations according to the wind power and photovoltaic cutting amount of each station. Compared with the prior art, the method and the device can self-adaptively and dynamically adjust the safety and stability control strategy according to the real-time running state of the multi-type power plant station so as to solve the stability problem after the multi-type power plant station is sent out of the system and has a fault.
Drawings
FIG. 1 is a flow chart of an adaptive stability control method for a multi-type power plant station-sending system according to the present invention;
FIG. 2 is a diagram illustrating an application structure of an adaptive stability control method for a multi-type power plant outbound system according to the present invention;
FIG. 3 is a schematic diagram of an implementation power grid of a specific adaptive stability control method for a multi-type power plant station-sending-out system according to the present invention;
FIG. 4 is a block diagram of an adaptive stability control apparatus of a multi-type power plant station-sending system according to the present invention;
fig. 5 is a block diagram of a power terminal according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
It should be noted that, the step numbers in the text are only for convenience of explanation of the specific embodiments, and do not serve to limit the execution sequence of the steps. The method provided by the embodiment can be executed by the relevant server, and the server is taken as an example for explanation below.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides an adaptive stability control method for a multi-type power plant station dispatch system, which is applied to a power generation system, where the power generation system includes various power plant stations connected to a safety and stability control master station and a safety and stability control information station, and the method includes steps S11 to S15:
and step S11, the safety and stability control master station receives the unit information uploaded by the various power plant stations.
Specifically, a safety and stability control main station of the multi-type power plant station sending-out system is connected with safety and stability control execution stations and stability control information stations of various power plant stations, and switchable unit information and unit types sent by the power plant stations are received from the safety and stability control execution stations of the power plant stations, wherein the thermal power plant stations are marked as Ai, and the thermal power units are marked as AijThe power of the corresponding thermal power generating unit is recorded as PAij，i＝1,2,3..nA，j＝1,2,3..nAi，nAIndicates the total number of thermal power plant stations accessed, nAiRepresenting the total number of the switchable units of the thermal power plant station Ai; station of hydroelectric power plant is marked as Bi, and hydroelectric generating set is marked as BijThe power of the corresponding hydroelectric generating set is recorded as PBij，i＝1,2,3..nB，j＝1,2,3..nBi，nBIndicates the total number of stations accessed to the hydroelectric power plant, nBiRepresenting the number of Bi master units of the hydroelectric power plant station; the wind power plant is denoted as Ci, and the wind turbine is denoted as CijThe corresponding wind turbine power is recorded as PCij，i＝1,2,3..nC，j＝1,2,3..nCi，nCRepresenting the total number of stations accessed to the wind power plant, nCiRepresenting the total number of the switchable units of the wind power plant Ci; photovoltaic power plant station notation DiPhotovoltaic power generation unit DijThe corresponding photovoltaic power generation unit power is marked as PDij，i＝1,2,3..nD，j＝1,2,3..nDi，nDRepresents the total number of accessed photovoltaic power plant stations, nDiRepresenting a photovoltaic power plant DiThe total number of the switchable units.
And step S12, when the safety and stability control information station monitors that the sending system has a fault, the safety and stability control main station receives the power-off amount sent by the safety and stability control information station and calculates the starting state value of the new energy.
Specifically, when the multi-type power plant station sending-out system fails, the safety and stability control master station of the multi-type power plant station sending-out system receives the power outage amount Dp sent by the safety and stability control information station, then calculates the new energy starting state value F according to the power generation power of each type of power plant station before the failure, compares the new energy starting state value F with the first starting state value F1 and the second starting state value F2, and executes different control logics.
Furthermore, the model for obtaining the new energy starting state value is that,
F＝PCDor
Figure GDA0003613093060000081
Figure GDA0003613093060000082
Figure GDA0003613093060000083
Wherein, PCDIs the sum of the output power of all wind power and photovoltaic power units, PABThe power is the sum of the output power of all thermal power generating units and hydroelectric generating units.
And step S13, calculating the machine cutting amount of each type of power plant station through the new energy starting state value and the corresponding machine cutting model. Wherein, each type of power plant station comprises a water-fire power plant station, a wind power plant station and a light power plant station.
Specifically, when the new energy starting state value F is smaller than the second starting state value F2, the total machine switching amount Dp of the hydroelectric generating set is calculated through the first machine modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD。
The first tangent model is as follows:
DpAB＝min(Dp,PA+PB)
Figure GDA0003613093060000084
Figure GDA0003613093060000085
Figure GDA0003613093060000086
Figure GDA0003613093060000087
Figure GDA0003613093060000088
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric generating sets, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
In particularWhen the new energy starting state value F is larger than the second starting state value F2 and smaller than the first starting state value F1, calculating the total generator tripping amount Dp of the water-fire power generating set through the second generator tripping modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD。
The second cutter model is as follows:
Figure GDA0003613093060000091
Figure GDA0003613093060000092
Figure GDA0003613093060000093
Figure GDA0003613093060000094
Figure GDA0003613093060000095
Figure GDA0003613093060000096
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
In particular, when newWhen the energy starting state value is larger than the first starting state value F1, calculating the total power cutting amount Dp of the hydroelectric generating set through the third power cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD。
The third cutting machine model is as follows:
Figure GDA0003613093060000101
Figure GDA0003613093060000102
DpAB＝max(Dp-PC-PD,0)
Figure GDA0003613093060000103
Figure GDA0003613093060000104
Figure GDA0003613093060000105
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresents the sum of the generated power of all the photovoltaic power generation units.
And step S14, selecting the thermal power and hydroelectric generating sets corresponding to each plant according to the total water-fire cutting amount to cut off.
In particular, if water, fire and electricityTotal cutting capacity Dp of machine setABLess than or equal to the sum P of all hydroelectric generating setsBSelecting corresponding units as cutting-off units in turn according to the serial numbers of the thermal power plant and the hydroelectric generating sets until the sum of the generated power of the cut-off hydroelectric generating sets is larger than the total cutting-off quantity Dp of the hydroelectric generating setsABUntil the end; if the total cutting amount Dp of the hydroelectric generating setABGreater than the sum P of all hydroelectric generating setsBAll hydroelectric generating sets are used as cutting-off generating sets, corresponding generating sets are selected as cutting-off generating sets in turn according to numbers of thermal power plant stations and thermal power generating sets until the sum of the power of the cut-off water and the power of the thermal power generating sets is larger than the total cutting-off quantity Dp of the thermal power generating setsABUntil now.
And S15, cutting fans or power generation units of the corresponding plant stations according to the wind power and photovoltaic cutting amount of each plant station.
Specifically, a generator tripping command of a corresponding generator set is sent to a thermal power plant and hydraulic power plant station stability control execution station so as to cut off the corresponding generator set; sending corresponding generator tripping amount Dp to wind power and photovoltaic power plant station stability control execution stationCiAnd DpDiAnd selecting the wind generating set and the photovoltaic generating unit to be cut according to the machine cutting amount and the numbering sequence of the generating sets or the generating units and cutting the wind generating set and the photovoltaic generating unit.
Referring to fig. 3, in the implementation of the present invention, if the power grid includes thermal power plants a1 and a2, hydraulic power plants B1 and B2, wind power plants C1 and C2, photovoltaic power plant D1 and an external power receiving system S. Wherein, thermal power plant A1 includes 2 generating sets, respectively A11And A12The generating power is 150 MW; the thermal power plant A2 comprises 2 generator sets A21And A22The generating power is 120 MW; the hydroelectric power plant B1 comprises 4 generator sets, respectively B11To B14The generating power is 80 MW; the hydroelectric power plant B2 comprises 3 generator sets, respectively B21To B23The generating power is 80 MW; wind power plant C1 has 15 units, respectively C11To C115The generated power is 10MW, the wind power plant C2 has 10 units,are respectively C21To C210The generating power is 15 MW; the photovoltaic power plant D1 has 40 photovoltaic power generation units, respectively D11To D140The generated power is 5 MW.
Further, the new energy output power ratio is selected as the new energy starting state F, namely
Figure GDA0003613093060000111
Case 1: when the second startup state value F2 is 0.4 and the first startup state value F1 is 0.6, the multi-type power plant station sends out the system to have a fault, the stable control master station receives the power-off amount Dp sent by the information station, the stable control master station calculates the total power-off amount Dp of the water-gas-electric generating set according to the first model of the power-off machine after the power-off amount Dp is 300MWABAnd the generator tripping amount Dp of each wind power plant stationC1,DpC2And the cutting amount Dp of each photovoltaic power stationD1。
DpAB＝min(Dp,PA+PB)
＝300MW
Figure GDA0003613093060000112
Figure GDA0003613093060000113
Figure GDA0003613093060000114
Because the total cutting quantity Dp of the water-fire electric machine setAB300MW, less than the sum of all hydroelectric generating setsBSequentially selecting hydroelectric generating sets B11、B21、B12、B22And the total of 4 machines 320MW are used as a cutting-off machine set to cut off the thermal power generating unit without cutting off the thermal power generating unit. In addition, the machine cutting amount of the wind power plant station and the photovoltaic power plant station is 0, so that a new energy machine set is not cut off.
Case 2: when the second startup state value is F2 ═ 0.3 and the first startup state value is F1 ═ 0.6, after the multi-type power plant station sending system fails, the stable control master station receives the information station sending machine switching quantity Dp ═ 600MW, and then calculates the total machine switching quantity Dp of the water-fire-electric generating set according to the second machine switching modelABAnd the generator tripping amount Dp of each wind power plant stationC1,DpC2And the cutting amount Dp of each photovoltaic power stationD1。
Figure GDA0003613093060000121
Figure GDA0003613093060000122
Figure GDA0003613093060000123
Figure GDA0003613093060000124
Because the total cutting capacity Dp of the hydro-thermal generator setAB206.25MW, less than the sum of all hydroelectric generating sets power PBSequentially selecting hydroelectric generating sets B11、B21、B12And 3 machines 240MW are used as a cutting unit to cut off, and the thermal power generating unit is not cut off.
In addition, the generator tripping amount Dp of the wind power plant C1C128.125MW, so cut off wind turbine C11To C13And total weight is 30 MW. Due to the cutting amount Dp of the wind power plant C2C228.125MW, so cutting Fan C21To C22And total weight is 30 MW. Due to the cutting amount Dp of the photovoltaic power plant D1D137.5MW, photovoltaic power generation unit D is cut off11To D18And total weight is 40 MW.
Case 3: when the second power-on state value F2 is 0.2 and the first power-on state value F1 is 0.3, the multi-type power plant is sent out of the systemAfter the fault occurs, the stable control main station receives the information station to send the machine cutting amount Dp which is 300MW, and then calculates the machine cutting amount Dp of the water-fire-electric generating set according to a third machine cutting modelABAnd the generator tripping amount Dp of each wind power plant stationC1,DpC2And the cutting amount Dp of each photovoltaic power stationD1
Figure GDA0003613093060000131
Figure GDA0003613093060000132
Figure GDA0003613093060000133
DpAB＝max(Dp-PC-PD,0)
＝0
Because the water-fire-electricity generator set cuts the machine volume DpABThe power is 0MW, so the hydroelectric and thermal power generating units are not cut off. Due to the cutting amount Dp of the wind power plant C1C190MW, so cut off the wind turbine C11To C19And total 90 MW. Due to the cutting amount Dp of the wind power plant C2C290MW, so the cutting fan C21To C26And total 90 MW. Due to the cutting amount Dp of the photovoltaic power plant D1D1120MW, so the photovoltaic power generating unit D is cut off11To D124And total 120 MW.
The self-adaptive dynamic regulation safety and stability control strategy can be self-adaptively and dynamically regulated according to the power generation conditions of new energy units such as wind power, photovoltaic and the like; the problem of self-adaption of control strategies of the multi-type power plant station sending-out system is solved; the full-stability control strategy is automatically selected without human intervention.
The embodiment of the invention provides a self-adaptive stability control method of a multi-type power plant station sending-out system, which comprises the following steps that firstly, a safety and stability control master station receives unit information uploaded by various power plant stations; when the safety and stability control information station monitors that a sending-out system has a fault, the safety and stability control master station receives the power-off amount sent by the safety and stability control information station and calculates a new energy starting state value; calculating the generator tripping amount of each type of power plant station according to the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a water-fire power plant station, a wind power plant station and a light power plant station; selecting thermal power and hydroelectric generating sets corresponding to all stations according to the total water-fire cutting amount to cut off; and cutting out the fans or power generation units of the corresponding stations according to the wind power and photovoltaic cutting amount of each station. Compared with the prior art, the method and the device can self-adaptively and dynamically adjust the safety and stability control strategy according to the real-time running state of the multiple types of power plant stations, so that the stability problem of the multiple types of power plant stations after the power plant stations are sent out of the system fault is solved, and the actual application requirements are met.
It should be understood that, although the steps in the above-described flowcharts are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in the above-described flowcharts may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or the stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least a portion of the sub-steps or stages of other steps.
As shown in fig. 4, the adaptive stability control apparatus for a multi-type power plant station outbound system provided by the present invention is applied to a power generation system, wherein the power generation system includes various power plant stations connected to a safety and stability control master station and a safety and stability control information station, and the apparatus includes:
and the receiving module 21 is used for receiving the unit information uploaded by each type of power plant station by the safety and stability control master station.
Wherein, in the unit information: thermal power plant station is marked as Ai, and thermal power unit is marked as AijPhase of changeThe power of the thermal power generating unit is recorded as PAij，i＝1,2,3..nA，j＝1,2,3..nAi，nAIndicates the total number of thermal power plant stations accessed, nAiRepresenting the total number of the switchable units of the thermal power plant station Ai; station of hydroelectric power plant is marked as Bi, and hydroelectric generating set is marked as BijThe power of the corresponding hydroelectric generating set is recorded as PBij，i＝1,2,3..nB，j＝1,2,3..nBi，nBIndicates the total number of stations accessed to the hydroelectric power plant, nBiRepresenting the number of Bi master units of the hydroelectric power plant station; the wind power plant is denoted Ci and the wind turbine is denoted CijThe corresponding wind turbine power is recorded as PCij，i＝1,2,3..nC，j＝1,2,3..nCi，nCRepresenting the total number of stations accessed to the wind power plant, nCiThe number of the total switchable units Ci of the wind power plant station is represented; photovoltaic power plant station notation DiPhotovoltaic power generation unit DijThe corresponding photovoltaic power generation unit power is marked as PDij，i＝1,2,3..nD，j＝1,2,3..nDi，nDRepresents the total number of accessed photovoltaic power plant stations, nDiRepresenting a photovoltaic power plant DiThe total number of the switchable units.
And the judging module 22 is configured to, when the safety and stability control information station monitors that the sending-out system fails, receive the power outage amount sent by the safety and stability control information station by the safety and stability control master station, and calculate a new energy startup state value.
Specifically, the safety and stability control master station receives the generator tripping amount Dp sent by the safety and stability control information station, and calculates the new energy starting state value F according to the generated power of each type of power plant station before the fault;
the model for obtaining the new energy starting state value is,
F＝PCDor
Figure GDA0003613093060000151
Figure GDA0003613093060000152
Figure GDA0003613093060000153
Wherein, PCDIs the sum of the output power of all wind power and photovoltaic power units, PABThe power is the sum of the output power of all thermal power generating units and hydroelectric generating units.
The calculation module 23 is configured to calculate the generator tripping amount of each type of power plant station through the new energy startup state value and the corresponding generator tripping model; wherein, various types of power plant stations comprise fire, water, wind and light power plant stations.
Specifically, when the new energy starting state value F is smaller than the second starting state value, the total water-gas turbine generator set cutting quantity Dp is calculated through the first cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the new energy starting state value F is larger than the second starting state value and smaller than the first starting state value, calculating the total machine cutting amount Dp of the hydroelectric generating set through the second machine cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the starting state value of the new energy is larger than the first starting state value, calculating the total power cutting amount Dp of the hydroelectric generating set through a third power cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD。。
And the first cutting module 24 is used for selecting the thermal power generating units and the hydroelectric generating units corresponding to each plant to cut according to the total water-fire cutting amount.
Specifically, if the total cutting amount Dp of the hydro-thermal generator setABLess than or equal to the sum P of all hydroelectric generating setsBSelecting corresponding units as cutting-off units in turn according to the serial numbers of the thermal power plant and the hydroelectric generating sets until the corresponding units are selectedThe sum of the generated power of the removed hydroelectric generating set and the total power cut Dp of the hydroelectric generating setABUntil the end;
if the total cutting quantity Dp of the water-fire electric machine setABGreater than the sum P of all hydroelectric generating setsBAll hydroelectric generating sets are used as cutting-off generating sets, corresponding generating sets are selected as cutting-off generating sets in turn according to numbers of thermal power plant stations and thermal power generating sets until the sum of the power of the cut-off water and the power of the thermal power generating sets is larger than the total cutting-off quantity Dp of the thermal power generating setsABUntil now.
And the second cutting module 25 is used for cutting off the fans or photovoltaic power generation units of the corresponding plant stations according to the wind power and photovoltaic cutting amount of each plant station.
Specifically, after the safe and stable control master station determines the switching amount of the water, fire and electricity cutting unit and each wind power and photovoltaic power plant,
sending a generator tripping command of a corresponding generator set to a thermal power plant and hydraulic power plant station stability control execution station to cut off the corresponding generator set;
sending corresponding generator tripping amount Dp to wind power and photovoltaic power plant station stability control execution stationCiAnd DpDiAnd selecting the wind generating set and the photovoltaic generating unit to be cut according to the machine cutting amount and the numbering sequence of the generating sets or the generating units and cutting the wind generating set and the photovoltaic generating unit.
The first tangent model is as follows:
DpAB＝min(Dp,PA+PB)
Figure GDA0003613093060000161
Figure GDA0003613093060000162
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting photovoltaic cellsPower station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
The second cutting machine model is as follows:
Figure GDA0003613093060000171
Figure GDA0003613093060000172
Figure GDA0003613093060000173
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
The third cutting machine model is as follows:
Figure GDA0003613093060000174
Figure GDA0003613093060000175
DpAB＝max(Dp-PC-PD,0)
wherein, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind farms CiPower of all wind turbinesSum of PDiRepresenting a photovoltaic power station DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind-power units, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
Compared with the prior art, the embodiment of the invention provides the self-adaptive stability control device of the multi-type power plant station sending-out system, wherein the safety and stability control master station receives the unit information uploaded by each type of power plant station; when the sending system has a fault, the safety and stability control master station receives the generator tripping amount sent by the safety and stability control information station and calculates a new energy starting state value; calculating the generator tripping amount of each type of power plant station according to the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a water-fire power plant station, a wind power plant station and a light power plant station; selecting corresponding thermal power and hydroelectric generating sets to cut off according to the water-fire cutting amount of each plant; and cutting out the fans or power generation units of the corresponding stations according to the wind power and photovoltaic cutting amount of each station. Compared with the prior art, the safety and stability control method and the system can dynamically adjust the safety and stability control strategy according to the real-time running state of the multiple types of power plants so as to solve the stability problem of the multiple types of power plants after the system is sent out.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program; wherein the computer program, when running, controls the device on which the computer-readable storage medium is located to execute the adaptive stability control method of the multi-type power plant station-sending-out system according to any of the above embodiments.
An embodiment of the present invention further provides an electric power terminal, which is shown in fig. 5 and is a block diagram of a preferred embodiment of the electric power terminal provided by the present invention, the electric power terminal includes a processor 10, a memory 20, and a computer program stored in the memory 20 and configured to be executed by the processor 10, and the processor 10, when executing the computer program, implements the adaptive stability control method of the multi-type power plant station-exiting system according to any of the above embodiments.
Preferably, the computer program can be divided into one or more modules/units (e.g. computer program 1, computer program 2,) which are stored in the memory 20 and executed by the processor 10 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program in the power terminal.
The Processor 10 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, etc., the general purpose Processor may be a microprocessor, or the Processor 10 may be any conventional Processor, the Processor 10 is a control center of the power terminal, and various interfaces and lines are used to connect various parts of the power terminal.
The memory 20 mainly includes a program storage area that may store an operating system, an application program required for at least one function, and the like, and a data storage area that may store related data and the like. In addition, the memory 20 may be a high speed random access memory, may also be a non-volatile memory, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), and the like, or the memory 20 may also be other volatile solid state memory devices.
It should be noted that the above-mentioned power terminal may include, but is not limited to, a processor and a memory, and those skilled in the art will understand that the structural block diagram of fig. 5 is only an example of the power terminal and does not constitute a limitation of the power terminal, and may include more or less components than those shown in the drawings, or may combine some components, or different components.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A self-adaptive stability control method of a multi-type power plant station sending-out system is applied to a power generation system and is characterized in that the power generation system comprises various power plant stations connected with a safety and stability control main station and a safety and stability control information station, and the method comprises the following steps:
the safety and stability control master station receives unit information uploaded by various power plant stations;
when the safety and stability control information station monitors that a sending-out system has a fault, the safety and stability control master station receives the power-off amount sent by the safety and stability control information station and calculates a new energy starting state value;
calculating the generator tripping amount of each type of power plant station through the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a fire power plant station, a water power plant station, a wind power plant station and a light power plant station;
selecting thermal power and hydroelectric generating sets corresponding to all stations according to the total water-fire cutting amount to cut off;
according to the wind power and photovoltaic generator cutting amount of each plant, cutting off a fan or a photovoltaic power generation unit of the corresponding plant;
calculating the machine cutting amount of each type of power plant station through the new energy starting state value and the corresponding machine cutting model, specifically comprising the following steps:
when the new energy starting state value F is smaller than the second starting state value, calculating the total starting cutting quantity Dp of the hydroelectric generating set through the first cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD(ii) a Wherein n isCRepresenting the total number of stations accessed to the wind power plant, nDRepresenting the total number of accessed photovoltaic power plant stations;
when the new energy is in the starting stateWhen the value F is larger than the second startup state value and smaller than the first startup state value, calculating the total startup cutting quantity Dp of the water-fire power generating set through the second startup cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the starting state value of the new energy is larger than the first starting state value, calculating the total power cutting amount Dp of the hydroelectric generating set through a third power cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
The first tangent model is as follows:
DpAB＝min(Dp,PA+PB)
Figure FDA0003625339800000021
Figure FDA0003625339800000022
the second cutter model is as follows:
Figure FDA0003625339800000023
Figure FDA0003625339800000024
Figure FDA0003625339800000025
the third cutting machine model is as follows:
Figure FDA0003625339800000026
Figure FDA0003625339800000027
DpAB＝max(Dp-PC-PD,0)
wherein Dp represents the amount of cutting, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind power plant CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic Power plant DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind turbines, PDRepresenting the sum of the generated power of all the photovoltaic power generation units.
2. The adaptive stability control method of the multi-type power plant station-sending system according to claim 1, wherein in the unit information: thermal power plant station is marked as Ai, and thermal power unit is marked as AijThe power of the corresponding thermal power generating unit is recorded as PAij，i＝1,2,3..nA，j＝1,2,3..nAi，nAIndicates the total number of thermal power plant stations accessed, nAiRepresenting the total number of the switchable units of the thermal power plant station Ai; station of hydroelectric power plant is marked as Bi, and hydroelectric generating set is marked as BijThe power of the corresponding hydroelectric generating set is recorded as PBij，i＝1,2,3..nB，j＝1,2,3..nBi，nBIndicates the total number of stations accessed to the hydroelectric power plant, nBiRepresenting the number of Bi master units of the hydroelectric power plant station; the wind power plant is denoted Ci and the wind turbine is denoted CijThe corresponding wind turbine power is recorded as PCij，i＝1,2,3..nC，j＝1,2,3..nCi，nCRepresenting the total number of stations accessed to the wind power plant, nCiRepresenting the total number of the switchable units of the wind power plant Ci; photovoltaic power plant station notation DiPhotovoltaic power generation unit DijCorresponding photovoltaic power generation sheetThe primary power is denoted as PDij，i＝1,2,3..nD，j＝1,2,3..nDi，nDRepresents the total number of accessed photovoltaic power plant stations, nDiRepresenting a photovoltaic power plant DiThe total number of the switchable units.
3. The adaptive stability control method of the multi-type power plant station-sending system of claim 1, wherein the safety and stability control master station receives the power outage amount sent by the safety and stability control information station and calculates a new energy startup state value, specifically:
the safety and stability control master station receives the generator tripping amount Dp sent by the safety and stability control information station, and calculates the new energy starting state value F according to the generated power of various types of power plant stations before the fault;
the model for obtaining the new energy starting state value is,
F＝PCDor
Figure FDA0003625339800000031
Figure FDA0003625339800000032
Figure FDA0003625339800000033
Wherein, PCDIs the sum of the output power of all wind power and photovoltaic power units, PABThe sum of the output power of all thermal power generating units and hydroelectric generating units, PAijPower i of thermal power generating unit is 1,2,3A，j＝1,2,3..nAi，nAIndicates the total number of thermal power plant stations accessed, nAiRepresenting the total number of the switchable units of the thermal power plant station Ai; pBijFor hydroelectric power plant power, i ═ 1,2,3.. nB，j＝1,2,3..nBi，nBIndicates the total number of stations accessed to the hydroelectric power plant, nBiBi total for hydraulic power plantThe number of the units; pCijFor the wind turbine power, i ═ 1,2,3.. nC，j＝1,2,3..nCi，nCRepresenting the total number of stations accessed to the wind power plant, nCiRepresenting the total number of the switchable units of the wind power plant Ci; p isDijFor photovoltaic power generation unit power, i is 1,2,3D，j＝1,2,3..nDi，nDRepresents the total number of accessed photovoltaic power plant stations, nDiRepresenting a photovoltaic power plant DiThe total number of the switchable units.
4. The adaptive stability control method for the multi-type power plant station outgoing system according to claim 1, wherein the thermal power and hydroelectric power units corresponding to each plant station are selected to be cut off according to the total water-fire cutting amount, and specifically:
if the total cutting quantity Dp of the water-fire electric machine setABLess than or equal to the sum P of all hydroelectric generating setsBSelecting corresponding units as cutting-off units in turn according to the serial numbers of the thermal power plant and the hydroelectric generating sets until the sum of the generated power of the cut-off hydroelectric generating sets is larger than the total cutting-off quantity Dp of the hydroelectric generating setsABUntil the end;
if the total cutting quantity Dp of the water-fire electric machine setABGreater than the sum P of all hydroelectric generating setsBAll hydroelectric generating sets are used as cutting-off generating sets, corresponding generating sets are selected as cutting-off generating sets in turn according to numbers of thermal power plant stations and thermal power generating sets until the sum of the power of the cut-off water and the power of the thermal power generating sets is larger than the total cutting-off quantity Dp of the thermal power generating setsABUntil now.
5. The adaptive stability control method of the multi-type power plant station sending-out system according to claim 1, wherein the fans or power generation units of the corresponding plant stations are cut according to the wind power and photovoltaic cutting amount of each plant station, specifically: after the safe and stable control master station determines the switching amount of the water, fire and electricity cutting unit and each wind power and photovoltaic power plant,
sending a generator tripping command of a corresponding generator set to a thermal power plant and hydraulic power plant station stability control execution station to cut off the corresponding generator set;
sending corresponding generator tripping amount Dp to wind power and photovoltaic power plant station stability control execution stationCiAnd DpDiAnd selecting the wind generating set and the photovoltaic power generation unit to be cut according to the number sequence of the respective generator cutting amount and the generator set or the power generation unit and cutting the generator set and the photovoltaic power generation unit.
6. The utility model provides a system's self-adaptation stability control device is seen off to polymorphic type power plant station is applied to a power generation system, a serial communication port, power generation system includes each type power plant station and safety and stability control information station of being connected with safety and stability control main website, the device includes:
the receiving module is used for receiving the unit information uploaded by each type of power plant station by the safety and stability control master station;
the judging module is used for receiving the generator tripping amount sent by the safety and stability control information station and calculating a new energy starting state value when the safety and stability control information station monitors that the sending-out system has a fault;
the calculation module is used for calculating the generator tripping amount of each type of power plant station through the new energy starting state value and the corresponding generator tripping model; wherein, each type of power plant station comprises a fire power plant station, a water power plant station, a wind power plant station and a light power plant station; calculating the machine cutting amount of each type of power plant station through the new energy starting state value and the corresponding machine cutting model, specifically comprising the following steps:
when the new energy starting state value F is smaller than the second starting state value, calculating the total starting cutting quantity Dp of the hydroelectric generating set through the first cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD(ii) a Wherein n isCRepresenting the total number of stations accessed to the wind power plant, nDRepresenting the total number of accessed photovoltaic power plant stations;
when the new energy starting state value F is larger than the second starting state value and smaller than the first starting state value, calculating the total machine cutting amount Dp of the hydroelectric generating set through the second machine cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
When the starting state value of the new energy is larger than the first starting state value, calculating the total power cutting amount Dp of the hydroelectric generating set through a third power cutting modelABThe generator tripping amount Dp of each wind power plantCi，i＝1,2,3..nCAnd the cutting amount Dp of each photovoltaic power plant stationDi，i＝1,2,3..nD；
The first tangent model is as follows:
DpAB＝min(Dp,PA+PB)
Figure FDA0003625339800000051
Figure FDA0003625339800000052
the second cutter model is as follows:
Figure FDA0003625339800000053
Figure FDA0003625339800000054
Figure FDA0003625339800000055
the third cutting machine model is as follows:
Figure FDA0003625339800000056
Figure FDA0003625339800000057
DpAB＝max(Dp-PC-PD,0)
wherein Dp represents the amount of cutting, PARepresenting the sum of the generated powers, P, of all thermal power generating unitsBRepresenting the sum of all hydroelectric power units, PCiRepresenting wind power plant CiSum of the powers of all wind turbines, PDiRepresenting a photovoltaic power plant DiSum of the generated power of all photovoltaic power generation units, PCRepresenting the sum of the powers of all wind turbines, PDRepresenting the sum of the generated power of all the photovoltaic power generation units;
the first cutting module is used for selecting thermal power and hydroelectric generating sets corresponding to all stations to cut off according to the total water-fire cutting amount;
and the second cutting module is used for cutting off the fans or photovoltaic power generation units of the corresponding plant stations according to the wind power and photovoltaic cutting amount of each plant station.
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