CN108695983A - A kind of photovoltaic power station Energy Management System and method - Google Patents
A kind of photovoltaic power station Energy Management System and method Download PDFInfo
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- CN108695983A CN108695983A CN201810739522.1A CN201810739522A CN108695983A CN 108695983 A CN108695983 A CN 108695983A CN 201810739522 A CN201810739522 A CN 201810739522A CN 108695983 A CN108695983 A CN 108695983A
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- 238000000034 method Methods 0.000 title description 5
- 238000007726 management method Methods 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims description 18
- 230000007423 decrease Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- H02J13/0006—
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- H02J3/383—
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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
- H02J3/38—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
- H02J3/48—Controlling the sharing of the in-phase component
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- 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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of photovoltaic power station Energy Management System, including on-site supervision module, obtain the generated output set point information of each power station photovoltaic system;The distribution information of control module is received, and carries out performance number setting;Control module is each unit inverter distribution power, receives the power setting value information of dispatching of power netwoks module, be sent to on-site supervision module;Monitoring inverter module monitors the power information of each unit inverter, return information to control module;Dispatching of power netwoks module sends general power setting value to control module and carries out global assignment, sends dispatching of power netwoks information to control module.Invention additionally discloses a kind of photovoltaic power station energy management methods.The operating status of photovoltaic power station can be known through the invention and is managed control, realized in the station of photovoltaic power station and managed, while being uploaded to scheduling related data, dispatching down distributing active power value, distributed photovoltaic power generation station can correctly execute.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, and in particular to a kind of photovoltaic power station Energy Management System and side
Method.
Background technology
Photovoltaic generation is a kind of skill that luminous energy is directly translated into electric energy using the photovoltaic effect of interface
Art.Mainly it is made of solar panel, controller and inverter three parts.Distributed photovoltaic power generation system, also known as distributing
Power generation or distributed energy supply refer to having at user scene or close to the smaller photovoltaic generation power supply system of electricity consumption situ configuration
Under conditions of solar radiation, the solar cell module array of photovoltaic generating system passes through the electric energy of solar energy conversion output
Direct current conflux case concentrate be sent into DC power distribution cabinet, by gird-connected inverter be reverse into alternating current supply building own load, it is extra or
Insufficient electric power is adjusted by coupling power grid.
But in the prior art, much all only the photovoltaic DC-to-AC converter in station is monitored, cannot achieve remote monitoring
Scheduling and management are parallel.
Invention content
It is existing to solve the purpose of the present invention is to provide a kind of photovoltaic power station Energy Management System and method
The problem of photovoltaic power station in technology cannot achieve Distant supervision and control.
To achieve the above object, the technical scheme is that
In a first aspect, a kind of photovoltaic power station Energy Management System is disclosed, including
On-site supervision module, obtains the generated output set point information of each power station photovoltaic system, and is sent to control mould
Block;The distribution information including distribution power value of control module feedback is received, and carries out performance number setting;
Control module receives the power setting value information of each power station photovoltaic system and is summarized, and is each unit inversion
Device distribution power receives real output information of each unit inverter through local load, calculates the reality of each unit inverter
After the difference of border output power and setting value, result of calculation is returned to dispatching of power netwoks module, and receive dispatching of power netwoks module and be directed to
The power setting value information of each power station photovoltaic system, is sent to on-site supervision module;
Monitoring inverter module monitors power allocation information and the output of each unit inverter sent from control module
Real output information of each unit inverter through local load of acquisition is back to control module by power information;
Dispatching of power netwoks module sends general power setting value to control module and carries out global assignment;Control module is received to send
The total grid generation power information summarized, according to control module send each unit inverter real output and setting
The difference of value sends dispatching of power netwoks information to control module.
As a preferred embodiment of the present invention, the distribution information includes at least current information, information of voltage and power
Information.
As a preferred embodiment of the present invention, the dispatching of power netwoks module issues active power value to control module, control
Molding block distributes active power to each power station, and active power is distributed to the inverter of each unit in power station through control module.
As a preferred embodiment of the present invention, the control module realizes power distribution using pid algorithm.
Second aspect discloses a kind of photovoltaic power station energy management method, using system as described above, uses
Pid algorithm is realized, is specifically comprised the following steps:
It obtains the generated output set point information of each power station photovoltaic system and summarizes summation;
It is each unit inverter distribution power according to setting value;
It obtains grid entry point output power information of each unit inverter after local load and summarizes summation;
Calculate the difference of real output and setting value that each unit inverter summarizes;
According to the difference obtained control information is sent to power station photovoltaic system total activation;
Obtain the increase and decrease scheduling information for power of power station photovoltaic system total activation;
The control data for carrying out generated output setting value adjustment is sent to each power station photovoltaic system according to scheduling information;
Power station photovoltaic system readjusts power generation setting value power according to control data;
Again it is each unit inverter distribution power.
As a preferred embodiment of the present invention, real output that each unit inverter summarizes and setting value are calculated
After difference, judge whether gap value is positive value;
If the determination result is YES, then control information is sent to power station photovoltaic system total activation according to the positive value obtained;
Obtain the increased scheduling information of power of power station photovoltaic system total activation;
If judging result is no, control information is sent to power station photovoltaic system total activation according to the negative value obtained;
Obtain the scheduling information of the power reduction of power station photovoltaic system total activation.
As a preferred embodiment of the present invention, again for each unit inverter distribution power when, pro rate average distribution
To the power increase and decrease of each inverter.
As a preferred embodiment of the present invention, when part inverter because black clouds or failure cannot reach setting value
When, redistribute active power.
The invention has the advantages that:
The operating status of photovoltaic power station can be known through the invention and is managed control, realize distributed light
It is managed in the station of overhead utility, while being uploaded to scheduling related data, dispatching down distributing active power value, distributed photovoltaic power generation station energy
Enough correct execution.
Description of the drawings
Fig. 1 is the fundamental block diagram of the present invention.
Fig. 2 is flow chart of the method for the present invention.
Fig. 3 is present system schematic diagram.
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1
See Fig. 1, present embodiment discloses a kind of photovoltaic power station Energy Management System, including on-site supervision module,
Control module, monitoring inverter module and dispatching of power netwoks module.
On-site supervision module, the generated output set point information for obtaining each power station photovoltaic system, and it is sent to control
Molding block;It is additionally operable to receive the distribution information including distribution power value of control module feedback, and carries out performance number setting,
Setting value is finally sent to control module, and power distribution is carried out by control module;
Control module receives the power setting value information of each power station photovoltaic system and carries out summarizing summation, is each unit
Inverter distribution power realizes power distribution using pid algorithm;Receive reality output work(of each unit inverter through local load
Rate information after calculating the real output of each unit inverter and the difference of setting value, returns to result of calculation to dispatching of power netwoks
Module, and the power setting value information that dispatching of power netwoks module is directed to each power station photovoltaic system is received, it is sent to on-site supervision mould
Block;
Monitoring inverter module monitors power allocation information and the output of each unit inverter sent from control module
Real output information the sum of of each unit inverter of acquisition through local load is back to control mould by power information
Block;
Dispatching of power netwoks module sends general power setting value to control module, and control module is directed to after receiving control information
The power of the output of each power station photovoltaic system to each unit inverter carries out global assignment;Dispatching of power netwoks module also receives control mould
The total grid generation power information summarized that block is sent, according to the real output for each unit inverter that control module is sent
Dispatching of power netwoks information is sent to control module with the difference of setting value.
In the present invention, the distribution information includes at least current information, information of voltage and power information.
In the present invention, the dispatching of power netwoks module issues active power value to control module, and control module is by active power
Active power is distributed to the inverter of each unit in distribution to each power station, power station through control module.
Embodiment 2
See Fig. 2, present embodiment discloses a kind of photovoltaic power station energy management methods, using system as described above
System, is realized using pid algorithm, is specifically comprised the following steps:
It obtains the generated output set point information of each power station photovoltaic system and summarizes summation;
It is each unit inverter distribution power according to setting value;
It obtains grid entry point output power information of each unit inverter after local load and summarizes summation;
Calculate the difference of real output and setting value that each unit inverter summarizes;
According to the difference obtained control information is sent to power station photovoltaic system total activation;
Obtain the increase and decrease scheduling information for power of power station photovoltaic system total activation;
The control data for carrying out generated output setting value adjustment is sent to each power station photovoltaic system according to scheduling information;
Power station photovoltaic system readjusts power generation setting value power according to control data;
Again it is each unit inverter distribution power.
Specifically, after calculating the difference of real output and setting value that each unit inverter summarizes, gap value is judged
Whether it is positive value;
If the determination result is YES, then control information is sent to power station photovoltaic system total activation according to the positive value obtained;
Obtain the increased scheduling information of power of power station photovoltaic system total activation;
If judging result is no, control information is sent to power station photovoltaic system total activation according to the negative value obtained;
Obtain the scheduling information of the power reduction of power station photovoltaic system total activation.
In the present embodiment, again for each unit inverter distribution power when, each inverter is distributed in pro rate average
Power increases and decreases.
In the present embodiment, when part inverter because when black clouds or failure cannot reach setting value, redistribute active
Power.
See that Fig. 3, the present invention mainly use pid algorithm to realize when carrying out power distribution, since current main mode is
MPPT maximum power point tracking algorithm ensures that photo-voltaic power generation station can send out maximum power, if scheduling needs to realize active power control
Automatic Generation Control (AGC) may be used to try down in system, and scheduling provides Pref setting power, and power station is adjusted according to this value
Power.
The algorithm of adjustment power is divided into outer shroud and inner ring, and outer shroud is closed by the value of feedback of grid-connected point output power to realize
Ring.After the gap that outer shroud calculates setting value and actual value, inner ring starts to carry out power distribution to each inverter:
1) for first according to each power difference, the power increase and decrease of each inverter is distributed in pro rate average;
2) feeds back to controller, is thought highly of by control when part inverter because black clouds or failure cannot reach setting value
New distribution active power.
Repeatedly, the power adjustment of an inner ring is carried out at interval of the set time (preferably 8s), outer shroud is at interval of fixation
Time, (preferably 30s) was once fed back.
The technical solution that the present invention is protected, it is not limited to above-described embodiment, it is noted that any one embodiment
The combination of technical solution in technical solution and other one or more embodiments, within the scope of the present invention.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention belong to the scope of protection of present invention.
Claims (8)
1. a kind of photovoltaic power station Energy Management System, which is characterized in that including
On-site supervision module, obtains the generated output set point information of each power station photovoltaic system, and is sent to control module;It connects
The distribution information including distribution power value of control module feedback is received, and carries out performance number setting;
Control module receives the power setting value information of each power station photovoltaic system and is summarized, for each unit inverter point
With power, real output information of each unit inverter through local load is received, the reality for calculating each unit inverter is defeated
After going out the difference of power and setting value, result of calculation is returned to dispatching of power netwoks module, and receives dispatching of power netwoks module for each
The power setting value information of power station photovoltaic system, is sent to on-site supervision module;
Monitoring inverter module monitors the power allocation information and output power of each unit inverter sent from control module
Real output information of each unit inverter through local load of acquisition is back to control module by information;
Dispatching of power netwoks module sends general power setting value to control module and carries out global assignment;Receive the remittance that control module is sent
Total total grid generation power information, according to the real output and setting value of each unit inverter that control module is sent
Difference sends dispatching of power netwoks information to control module.
2. a kind of photovoltaic power station Energy Management System according to claim 1, which is characterized in that the distribution letter
Breath includes at least current information, information of voltage and power information.
3. a kind of photovoltaic power station Energy Management System according to claim 1, which is characterized in that the power grid tune
Degree module issues active power value to control module, and control module distributes active power to each power station, and power station is through controlling mould
Block distributes active power to the inverter of each unit.
4. a kind of photovoltaic power station Energy Management System according to claim 1, which is characterized in that the control mould
Block realizes power distribution using pid algorithm.
5. a kind of photovoltaic power station energy management method, which is characterized in that application is according to any one of claims 1-4
System is realized using pid algorithm, is specifically comprised the following steps:
It obtains the generated output set point information of each power station photovoltaic system and summarizes summation;
It is each unit inverter distribution power according to setting value;
It obtains grid entry point output power information of each unit inverter after local load and summarizes summation;
Calculate the difference of real output and setting value that each unit inverter summarizes;
According to the difference obtained control information is sent to power station photovoltaic system total activation;
Obtain the increase and decrease scheduling information for power of power station photovoltaic system total activation
The control data for carrying out generated output setting value adjustment is sent to each power station photovoltaic system according to scheduling information;
Power station photovoltaic system readjusts power generation setting value power according to control data;
Again it is each unit inverter distribution power.
6. a kind of photovoltaic power station energy management method according to claim 5, which is characterized in that calculate each unit
After the difference of real output and setting value that inverter summarizes, judge whether gap value is positive value;
If the determination result is YES, then control information is sent to power station photovoltaic system total activation according to the positive value obtained;
Obtain the increased scheduling information of power of power station photovoltaic system total activation;
If judging result is no, control information is sent to power station photovoltaic system total activation according to the negative value obtained;
Obtain the scheduling information of the power reduction of power station photovoltaic system total activation.
7. a kind of photovoltaic power station energy management method according to claim 6, which is characterized in that be again each machine
When group inverter distribution power, the power increase and decrease of each inverter is distributed in pro rate average.
8. a kind of photovoltaic power station energy management method according to claim 7, which is characterized in that when part inversion
Device redistributes active power because when black clouds or failure cannot reach setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739522.1A CN108695983B (en) | 2018-07-06 | 2018-07-06 | Distributed photovoltaic power station energy management system and method |
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| CN201810739522.1A CN108695983B (en) | 2018-07-06 | 2018-07-06 | Distributed photovoltaic power station energy management system and method |
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| CN108695983A true CN108695983A (en) | 2018-10-23 |
| CN108695983B CN108695983B (en) | 2021-09-07 |
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| CN111082462A (en) * | 2020-01-21 | 2020-04-28 | 南方电网科学研究院有限责任公司 | Standardized new forms of energy management system that is incorporated into power networks |
| CN113098056A (en) * | 2021-04-02 | 2021-07-09 | 广东技术师范大学 | Photovoltaic converter system for new energy grid connection |
| CN114726003A (en) * | 2022-06-10 | 2022-07-08 | 北京东润环能科技股份有限公司 | Power scheduling method and device for photovoltaic system, electronic equipment and storage medium |
| CN115036988A (en) * | 2022-06-06 | 2022-09-09 | 上海正泰电源系统有限公司 | Control method for dynamically adjusting running power of complete inverter |
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| Publication number | Publication date |
|---|---|
| CN108695983B (en) | 2021-09-07 |
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