CN106408438B - Security and stability control strategy automatic Check method based on full dynamic simulation - Google Patents
Security and stability control strategy automatic Check method based on full dynamic simulation Download PDFInfo
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Abstract
The present invention provides the security and stability control strategy automatic Check methods based on full dynamic simulation, it include: topological constraints and trend constraint based on electricity net safety stable control strategy, the characterization device and its state for extracting characterization grid operation mode, automatically generate characterization device table；According to power network topology, basic trend and dynamic element parameter, grid operation mode, and security and stability control strategy corresponding to the current method of operation of Auto-matching are identified；Preset failure collection is automatically generated, and is based on total system Dynamic Simulation Model, realizes the mass automatic Check of security and stability control strategy.This method solve the defects that power system security Stable Control Strategy can not accurately and efficiently complete system automatic Check, provide powerful to assess and formulating electricity net safety stable control strategy.
Description
Technical field
The present invention relates to field of power systems, and in particular to the security and stability control strategy based on full dynamic simulation is certainly
Dynamic check method.
Background technique
With gradually forming for China's alternating current-direct current extra-high voltage grid, operation of power networks and management are encountered by unprecedented new shape
A possibility that gesture and new challenge, the power grid transitional period is particularly thorny safely, and cascading failure occurs constantly increases.In chain accident,
The action behavior of safety stabilization control system is extremely crucial, is the important defence line for preventing system crash.
Electric system simulation calculating is closely related with the safe and stable operation of power grid, and directly affects relevant Decision scheme.
In order to adapt to increasingly complicated Electrical Power System Dynamic behavior, continually changing operating condition, objectively require to improve electric system
Simulation accuracy, computational efficiency and analysis intelligent level.
After network structure, the method for operation change, by the personal experience of staff, peace is checked and checked again
Correctness, reasonability and the adaptability of full Stable Control Strategy are an extremely complex and difficult job.Moreover, trend
Transfer may result in the serious overload of route, transformer, generator relates to net protection act etc., or even can also cause cascading failure
Etc. major accidents.Since time span is big, failure situations are complicated, often difficult to calculate in advance, existing based on static security point
The control strategy check method of analysis or electromechanical transient stability analysis has been difficult to meet the ultra-large alternating current-direct current power grid in China and send out rapidly
The requirement of exhibition.
To ensure power system security, high-quality and economical operation, improving the stable operation level of system and resisting failure energy
Power, studying a kind of can realize security and stability control policy system, accurate and high according to power grid practical operation situation and fault condition
The overall process dynamic of effect is checked, normal to guarantee electric system, reliable to have a very important significance with economical operation.
Summary of the invention:
To achieve the goals above, the present invention provide a kind of security and stability control strategy based on full dynamic simulation from
Dynamic check method, is suitable for large-scale electrical power system stability simulation.
The purpose of the present invention is adopt the following technical solutions realization:
Security and stability control strategy automatic Check method based on full dynamic simulation, which comprises
(1) electricity net safety stable control scheme list is inputted, is topology, trend, failure and control four by its automatic classifying
Constraint set automatically generates the standardization Policy model suitable for full dynamic simulation；
(2) characterization device for extracting each constraint set of control scheme list, establishes characterization device table, defines the whole network uniqueness
Mark；
(3) practical power systems topological parameter, initial trend are obtained, is mapped in individual features equipment list；Read dynamic
Component parameters establish dynamic element simulation model；
(4) a security and stability control strategy is read from electricity net safety stable control scheme list, extracts topology therein
Constraint and trend constraint judge whether the current state for matching individual features equipment；If so, executing step (5)；Otherwise, it executes
Step (6)；
(5) security and stability control strategy effective marker, the open strategy are set；
(6) judge whether all security and stability control strategies match to finish；If so, executing step (7)；Otherwise, step is executed
Suddenly (4)；
(7) according to electricity net safety stable control strategy and actual electric network operating provisions, be set separately generator rotor angle, voltage, frequency,
The Rated Power Parameters limitation of section tidal current, line and transformer, whether complete as check electricity net safety stable control strategy,
The whether normal standard of equipment running status；
(8) selection fault set generates mode, automatically generates preset failure collection；
(9) successively selection preset failure concentrate any multiple preset failure scene, according to faulty equipment, fault type,
Abort situation and failure beginning and ending time generate full dynamic simulation fault model；
(10) according to electricity net safety stable control strategy, selected preset failure scene information, dynamic element simulation model and
Initial trend forms the full dynamic simulation data under fault condition；
(11) full dynamic simulation iterative solution is executed, each element state in next step-length is calculated.
(12) judge whether to break down, if faulty generation, execute step (13)；Otherwise, step (18) are executed；
(13) differentiate whether match control strategy failure constrains current failure；If the two matches, execute step (14)；It is no
Then, step (15) are executed；
(14) its control constraints is extracted, by corresponding control measure insertion event queue；
(15) post-failure state amount is recalculated, the primary condition as next iteration；
(16) triggering control measure event is discriminated whether；If triggering executes step (17)；Otherwise, step (18) are executed；
(17) control measure are executed, and modify network topology structure；
(18) next integration step state is iterated to calculate；
(19) it discriminates whether to have arrived this full dynamic simulation end time；If having terminated, execute step (20)；It is no
Then, step (11) are executed；
(20) full dynamic simulation result is counted；Assess electricity net safety stable control strategy, judge system whether unstability,
Whether there is or not unusual service conditions for system element；Save check result；
(21) it discriminates whether that all forecast failure scenes have been checked to finish；If so, going to step (22)；Otherwise, step is executed
Suddenly (10)；
(22) it checks and finishes, export all check results.
Preferably, according to the topological constraints and trend constraint of the electricity net safety stable control strategy, characterization power grid is extracted
The characterization device and its state of the method for operation, automatically generate characterization device table.
Preferably, the tool using topology unit as characterization device state description, different topology unit is with "AND" logic
Connection, and pass through the topological constraints of identification topology status Auto-matching security and stability control；Wherein, the logic of the topology unit
Expression formula are as follows:
……
……
In formula, S is status indicator, and whether characterization topology unit current state matches；If S is very, to show that topological constraints are full
Sufficient condition；Otherwise, topological constraints are unsatisfactory for condition；N is that mode sum is moved back in the corresponding throwing of the topology unit；LiFor topology unit
Assembled state is moved back in i-th kind of throwing that k element is constituted, if its value is that the true respresentation assembled state meets topological constraints, otherwise, for not
Meet；mjIndicate j-th of element investment in the topology unit,
If true, j-th of element exits in the topology unit, mkTable
Show k-th of element investment in the topology unit,
If true, k-th of element exits in the topology unit.
Preferably, the trend constraint, including inspected feature equipment, movement threshold value and differentiation logic；By to corresponding spy
It levies equipment state and acts the logic discrimination of threshold value, export corresponding state；The trend constraint can be made of several constraint conditions,
Each constraint condition defines trend constraint state with "AND" logical course.
Preferably, failure letter is formed according to the electricity net safety stable control strategy, equipment significance level or user demand
Breath collection selects faulty equipment, fault type, failure to occur and eliminate the time, automatically generates any multiple preset failure scene.
Preferably, initial trend, the whole network dynamic element and its corresponding relay protection and control system model, simulation are based on
Electromechanical transient and long term dynamics process after generation large disturbances, complete large scale electric network security and stability control Policy model
Overall process automatic Check.
Compared with the nearest prior art, the technical scheme provide by that invention has the following excellent effect:
The present invention is based on electric network swim data, dynamic element and its Control protection system models, automatically generate forecast failure
Collection, can carry out batch processing, full mistake to large-scale electrical power system security and stability control strategy under different running method, fault condition
Journey dynamic is checked.The present invention solves power system security Stable Control Strategy and lacks system, accurate and efficient for a long time
The problem of dynamic simulation and automatic Check method, provides powerful to assess and formulating electricity net safety stable control strategy,
The safe and stable and economical operation of extensive alternating current-direct current power grid is had a very important significance.
Detailed description of the invention
Fig. 1 is automatic Check method flow diagram of the invention；
Specific embodiment
1. characterization device is extracted
It is more that security and stability control strategy is related to equipment, broad covered area, and regional disparity is big.In actually calculating, it is not necessary to
All devices can not be described one by one.In order to reduce calculation amount, need to compare different topology mode, trend constraint
Compared with, count characterization power grid difference operating status characterization device.Characterization device includes characteristic line, feature transformer and feature
Unit and feature section etc..Wherein, characteristic line, feature transformer and feature unit etc. are for describing electric system real network
Structure；Feature section is then virtual unit, refers to the passway for transmitting electricity being made of between different power grids a plurality of route.
Quickly to determine characterization device, unified definition 10 codings establish characterization device Code Mapping Tables, with physical device
It corresponds.The position 1-2 of characterization device coding is defined as device type, for distinguishing different types of characterization device；3-4 are
Regional code, 5-6 are zonal coding；7-10 is then that serial number is arranged in same subregion.For example, the present invention is by characteristic line type
It is defined as 01, feature transformer is defined as 02, and feature unit is defined as 03, and feature section is defined as 04 etc..To be located at the area 0A the
For one subregion transformer, device numbering is 012 in area, then characterization device coding may be expressed as: 020A010012.
The present invention is according to the trend of input and stablizes data, counts route, transformer, bus, load and power generation in power grid
Machine object automatically generates characterization device table according to operating parameter under current way.The table each row of data represents a specific features
Details.Wherein, actual characteristic facility information by corresponding device name, state is moved back in throwing and Power Flow Information forms, specifically
In conjunction with shown in table 1, table 2 and table 3；
1 route operating parameter table of table
2 generator operating parameter table of table
3 transformer station high-voltage side bus parameter list of table
Feature section then defines the line name that the section includes, and the section being calculated by these Line Flows
Trend, as shown in table 4.
4 section operating parameter table of table；
2. security and stability control strategy topological constraints
Security and stability control strategy and electric system topology mode are closely related, and the present invention is retouched using characterization device state
State power network topology.Each topological mode is usually characterized by several topological constraints units, and "AND" logic is used between unit
Outlet.Corresponding tool when may relate to the different conditions of same characterization device inside topological constraints unit, in the constraint element
"or" logic export should be used between body constraint condition.
When a certain characterization device virtual condition and the consistent corresponding topological constraints in control strategy, then the constraint item
Part output is true value；It otherwise is false.By taking feature unit as an example, when corresponding topological constraints condition is that unit commitment is run, constraint
Output with conditions is characterized equipment state value；Conversely, if topological constraints condition is that the unit is out of service, it need to be to characterization device state
Value, which carries out " non-" logical operation, can obtain corresponding constraint condition output.It is when the output of topological constraints unit is true, i.e., involved
And to move back state identical for the throwing of characterization device state and physical device.If under a certain method of operation, all topological constraints units are all satisfied,
Then think the security and stability control strategy and actual electric network topology matching.
A kind of topological constraints there may come a time when to be related to the different conditions of same characterization device.For example, the branch in feature section
The topological mode of N-1.It should then differentiate at this time and actually put into operation number of branches compared with the branch in topological constraints, if number phase
Together, then output is true；Otherwise, output is false.Corresponding constraint element logical expression is defined as follows:
……
……
In formula, S is status indicator, and whether characterization topology unit current state matches；If S is very, to show that topological constraints are full
Sufficient condition；Otherwise, topological constraints are unsatisfactory for condition；N is that mode sum is moved back in the corresponding throwing of the topology unit；LiFor topology unit
Assembled state is moved back in i-th kind of throwing that k element is constituted, if its value is that the true respresentation assembled state meets topological constraints, otherwise, for not
Meet；mjIndicate j-th of element investment in the topology unit,
If true, j-th of element exits in the topology unit, mkTable
Show k-th of element investment in the topology unit,
If true, k-th of element exits in the topology unit；
If true, this is opened up
The 1st element in unit is flutterred to exit；m2Indicate the 2nd element investment in the topology unit,
If true, in the topology unit
2 elements exit.
In the following, illustrating topological constraints unit for any one is exited by tri- characterization devices of A, B, C.Obviously, this
Part is corresponding to it there are three types of different topological structures altogether, and respectively A is exited, B, C operation；B is exited, A, C operation；C is exited, A, B
Operation.Enabling three characterization device actual motion state values is respectively a, b, c, and 0 indicates investment, and 1 indicates to exit, then above-mentioned condition can
It is summarized as,
Wherein, it is out of service to illustrate that policy mandates correspond to equipment for logic symbol " non-".If S be it is true,
Show that topological constraints condition meets, otherwise topological constraints are unsatisfactory for condition.
3. security and stability control strategy trend constraint
Power system operation mode further relates to power grid conveying trend in addition to topological structure of electric.Trend constraint of the invention
It defines test object, movement threshold value and differentiates type.The trend constraint of each control strategy be actually by it is a series of about
Beam condition is constituted, and with the output of "AND" logic.
Trend constraint model can extract individual features equipment from aforementioned characterization device the encoding list, determine the electricity of being monitored
Tolerance, such as section tidal current, route or transformer trend.Threshold value is acted for determining that detected electrical quantity triggers safety and stability control
Make the condition of strategy.Differentiate that type then defines the practical trend of monitoring object and acts the logic discrimination property between threshold value, it is real
Existing class is normally opened, normally closed logic, i.e., ">", "<", ">=" or "≤" etc. differentiates logic.
The trend constraint of the physical devices such as route, transformer and generating set is related to its transmission power size, and feature is disconnected
It face then should be compared with corresponding section tidal current gear.If trend is in defined section, output is true；Otherwise, output is false.
4. security and stability control strategy failure constrains
Security and stability control strategy is the key measure coped with catastrophe failure condition, ensure power network safety operation.Cause
This, control strategy must specifically describe failure constraint.Failure constraint is made of fault element and fault type two parts information.It is suitable
The scene of any multiple failure, the same control strategy of the present invention can correspond to multiple failure constraint conditions, between various boundary conditions
Using "AND" logic export.
Fault element information describes the sequence of fault element type, location of the machine to be installed and the element in same category of device
Number.These information, to obtain corresponding electrical quantity and switching value, carry out fault identification for retrieving fault element.Failure classes
Type then includes the single-phase permanent fault of route, single-phase fault jump three-phase, three-phase permanent fault, three-phase transient fault, route or change
Fault-free trip, bus-bar fault, breaker failure, the locking of direct current monopole, DC bipolar block of depressor etc..What the present invention established
Fault identification model changes in conjunction with electrical quantity according to on-off model, realizes the automatic identification of fault message.
After safety and stability control device identifies fault message, effectively controlled under the constraint of retrieval present topology, trend constraint
System strategy, and successively discriminate whether to meet lower faulty constraint condition of the strategy.It is preset former and if only if occurring in system
When barrier, security and stability control strategy could trigger corresponding control measure.The differentiation of failure constraint is not by fault moment and failure
Position limitation, is specifically defined as shown in table 5.
5 security and stability control Policy Table's failure of table constrains sublist
5. security and stability control policy control constrains
After a control strategy, which meets corresponding topological constraints, trend constraint and failure, to be constrained, that is, trigger its control about
Beam can control multiple objects simultaneously, constitute the control constraints collection of the control strategy.
Control constraints mainly include the information such as control object, control amount, priority and control time.Control object can define
For generator, load, route, transformer, capacitor, reactor and DC power transmission line etc..Control amount can be by relation control
Amount and absolutely control are described.For example, carrying out load excision operation by the percentage or total amount of bus load before failure.Control
The priority of object processed can be specified by user, and the smaller then priority of priority serial number is higher；Otherwise, using default mode, i.e. root
According to actual capacity and Ke Qie capacity, size carries out auto-sequencing to control object by measure, and must meet minimum cutting principle and cut
It removes.The control time is then the generation moment of practical operation.
6. method of operation automatic identification and matching
The present invention is described according to the standardization of security and stability control strategy, establishes topological constraints table, trend constraint table, failure
Restriction table and measure restriction table, and thorough search is carried out to above-mentioned restriction table, all characterization devices are automatically extracted, classification forms special
The characterization devices collection such as route, feature transformer, feature generator are levied, the whole network unique identification coding is carried out.
After reading in flow data and obtaining power grid actual operation parameters, nucleus correcting program retrieves matching characteristic equipment list, calculates
Corresponding topological constraints, trend constraint state value.The topological constraints and trend constraint of all control strategies are differentiated and counted one by one.When
Corresponding constraint output is true value, it is believed that and current way is institute's detection mode, the open security and stability control strategy, otherwise,
Locking strategy.To realize the matching of the method for operation and security and stability control strategy.
7. forecast failure collection
For dynamic behaviour of research safety Stable Control Strategy under the conditions of different faults, and its validity is verified, this
Invention proposes three kinds of forecast failure collections and generates the dynamic simulation check that mode carries out control strategy:
1) fault message collection is automatically generated according to security and stability control Policy Table.This failure set creation method passes through scanning
Policy Table automatically extracts the corresponding failure constraint information of security and stability control strategy, generates forecast failure collection.This mode is main
After changing suitable for the method for operation, whether effective and reasonable original security and stability control strategy is checked.
2) fault message collection is automatically generated according to equipment significance level.When using this method, program scanning actual electric network fortune
Row parameter list searches for the above transmission line of electricity of the total system voltage class, transformer, power generation according to the voltage class being previously set
The important equipments such as machine and HVDC transmission line, the fault sets such as difference batch setting N-1, N-2.This mode lays particular emphasis on check
When important equipment failure, can current safety Stable Control Strategy guarantee the stable operation of power grid.
3) fault message collection is formed according to user demand.When adopting this method, program can need that event is arranged according to user
Hinder equipment, fault type, failure generation and elimination time etc., automatically generates fault set.The mode is used to check user's care
When specific fault occurs for equipment, whether security and stability control strategy meets electricity net safety stable requirement.
After forecast failure collection generation mode determines, it can be arranged as user's fault message format according to shown in table 6 and be envisioned
Fault set.Wherein, failure generation moment, Failure elimination moment, route first and last end switch off time can need to set according to user.
One complete forecast failure collection includes several forecast failure scenes.Each forecast failure scene can also be set according to actual needs
Set several fault messages.
The information table of 6 forecast failure collection of table
8. automatic Check
The present invention carries out the automatic identification of the method for operation, and the corresponding control strategy of Auto-matching first.It is pre- automatically forming
After thinking fault set, one of forecast failure scene is successively selected, according to faulty equipment, fault type and failure beginning and ending time,
Automatically corresponding fault model in whole process simulation program is set up, and together with original stable data, forms different faults item
Stability simulation data under part carry out security and stability control strategy overall process dynamic analog.
After emulation check starts, program iteratively solves the total system differential equation and algebraic equation, each element of accurate simulation
Dynamic change.After failure occurs, security and stability control strategy checks software will scan all effective control strategies one by one, and
Discriminate whether current failure matches the setting failure in failure constraint.If the two matches, executes corresponding control and arrange
It applies, and modifies network topology structure.Post-failure state amount is recalculated, the primary condition as next iteration.Product is repeated
Divide and calculate, until fault scenes emulation terminates.
After emulation, it is also necessary to its simulation result carry out data analysis, judge system whether unstability, equipment operation ginseng
Whether out-of-limit etc. the abnormal phenomenon of number, to complete the control strategy check result assessment under the fault scenes.So circulation, until
The control strategy completed under all fault scenes that forecast failure is concentrated is checked.
9. check result is assessed
Generator rotor angle, voltage, frequency is set separately according to guiding rules of power system safety and stability and actual electric network operating provisions in the present invention
Rate, section tidal current, rated power of line and transformer etc. limit, and pacify tactful whether complete, the equipment operation shape of control as checking
The whether normal standard of state.After emulation, needs to carry out data analysis to the simulation result of forecast failure, whether judge system
The abnormal phenomenon such as whether unstability, equipment operating parameter out-of-limit.
The specific method is as follows:
1) INSTABILITY CRITERION: statistics total system maximum generation machine phase angle difference.If maximum phase angle difference is more than 180 degree, can be judged to be
System unstability, while existing security and stability control strategy being prompted not to be able to satisfy the requirement of system safety and stability under current failure.
2) the characterization device state parameter and its upper lower limit value under the current method of operation of power grid are retrieved.Checking simulation result is
It is no out-of-limit, and record out-of-limit moment, numerical value and its out-of-limit coefficient.Wherein, the calculation of out-of-limit coefficient is as follows:
In formula: M is element operating parameter measured value, and LimU is the operating parameter upper limit, and LimD is operating parameter lower limit, and N is
The specified operational parameter value of equipment.Calculate the out-of-limit coefficient of all devices, the severity of assessment equipment misoperation, as assessment
The reference of security and stability control strategy effect.
3) summarize and evaluate the check result of all security and stability control strategies, export conclusion.
As shown in Figure 1, the security and stability control strategy automatic Check method based on full dynamic simulation, the method tool
Body includes the following steps:
(1) electricity net safety stable control scheme list is inputted, is topology, trend, failure and control four by its automatic classifying
Constraint set automatically generates the standardization Policy model suitable for full dynamic simulation；
(2) characterization device for extracting each constraint set of control scheme list, establishes characterization device table, defines the whole network uniqueness
Mark；
(3) practical power systems topological parameter, initial trend are obtained, is mapped in individual features equipment list；Read dynamic
Component parameters establish dynamic element simulation model；
(4) a security and stability control strategy is read from electricity net safety stable control scheme list, extracts topology therein
Constraint and trend constraint judge whether the current state for matching individual features equipment；If so, executing step (5)；Otherwise, it executes
Step (6)；
(5) security and stability control strategy effective marker, the open strategy are set；
(6) judge whether all security and stability control strategies match to finish；If so, executing step (7)；Otherwise, step is executed
Suddenly (4)；
(7) according to electricity net safety stable control strategy and actual electric network operating provisions, be set separately generator rotor angle, voltage, frequency,
The Rated Power Parameters limitation of section tidal current, line and transformer, whether complete as check electricity net safety stable control strategy,
The whether normal standard of equipment running status；
(8) selection fault set generates mode, automatically generates preset failure collection；
(9) successively selection preset failure concentrate any multiple preset failure scene, according to faulty equipment, fault type,
Abort situation and failure beginning and ending time generate full dynamic simulation fault model；
(10) according to electricity net safety stable control strategy, selected preset failure scene information, dynamic element simulation model and
Initial trend forms the full dynamic simulation data under fault condition；
(11) full dynamic simulation iterative solution is executed, each element state in next step-length is calculated.
(12) judge whether to break down, if faulty generation, execute step (13)；Otherwise, step (18) are executed；
(13) differentiate whether match control strategy failure constrains current failure；If the two matches, execute step (14)；It is no
Then, step (15) are executed；
(14) its control constraints is extracted, by corresponding control measure insertion event queue；
(15) post-failure state amount is recalculated, the primary condition as next iteration；
(16) triggering control measure event is discriminated whether；If triggering executes step (17)；Otherwise, step (18) are executed；
(17) control measure are executed, and modify network topology structure；
(18) next integration step state is iterated to calculate；
(19) it discriminates whether to have arrived this full dynamic simulation end time；If having terminated, execute step (20)；It is no
Then, step (11) are executed；
(20) full dynamic simulation result is counted；Assess electricity net safety stable control strategy, judge system whether unstability,
Whether there is or not unusual service conditions for system element；Save check result；
(21) it discriminates whether that all forecast failure scenes have been checked to finish；If so, going to step (22)；Otherwise, step is executed
Suddenly (10)；
(22) it checks and finishes, export all check results.
In conclusion according to a kind of security and stability control strategy automatic Check based on full dynamic simulation of the invention
Method can be based on electric network swim data, dynamic element and its Control protection system model, automatically generate forecast failure collection, realize
Large-scale electrical power system security and stability control strategy carries out batch processing, overall process dynamic under different running method, fault condition
It checks, meets safe and stable operation of power system and system, accurate and efficient dynamic simulation and automatic are carried out to control strategy
The requirement of check.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field is although should be understood with reference to the above embodiments: still can be to a specific embodiment of the invention
It is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent replacement, in Shen
Within claims of the invention that please be pending.
Claims (6)
1. the security and stability control strategy automatic Check method based on full dynamic simulation, which is characterized in that the method packet
It includes:
(1) electricity net safety stable control scheme list is inputted, is four topology, trend, failure and control constraints by its automatic classifying
Collection, automatically generates the standardization Policy model suitable for full dynamic simulation；
(2) characterization device for extracting each constraint set of control scheme list, establishes characterization device table, defines the whole network uniqueness mark
Know；
(3) practical power systems topological parameter, initial trend are obtained, is mapped in individual features equipment list；Read dynamic element
Parameter establishes dynamic element simulation model；
(4) a security and stability control strategy is read from electricity net safety stable control scheme list, extracts topological constraints therein
And trend constraint, judge whether the current state for matching individual features equipment；If so, executing step (5)；Otherwise, step is executed
(6)；
(5) security and stability control strategy effective marker, the open strategy are set；
(6) judge whether all security and stability control strategies match to finish；If so, executing step (7)；Otherwise, step is executed
(4)；
(7) according to electricity net safety stable control strategy and actual electric network operating provisions, generator rotor angle, voltage, frequency, section is set separately
The Rated Power Parameters limitation of trend, line and transformer, the whether complete, equipment as check electricity net safety stable control strategy
The whether normal standard of operating status；
(8) selection fault set generates mode, automatically generates preset failure collection；
(9) any multiple preset failure scene that successively selection preset failure is concentrated, according to faulty equipment, fault type, failure
Position and failure beginning and ending time generate full dynamic simulation fault model；
(10) according to electricity net safety stable control strategy, selected preset failure scene information, dynamic element simulation model and initial
Trend forms the full dynamic simulation data under fault condition；
(11) full dynamic simulation iterative solution is executed, each element state in next step-length is calculated；
(12) judge whether to break down, if faulty generation, execute step (13)；Otherwise, step (18) are executed；
(13) differentiate whether match control strategy failure constrains current failure；If the two matches, execute step (14)；Otherwise, it holds
Row step (15)；
(14) its control constraints is extracted, by corresponding control measure insertion event queue；
(15) post-failure state amount is recalculated, the primary condition as next iteration；
(16) triggering control measure event is discriminated whether；If triggering executes step (17)；Otherwise, step (18) are executed；
(17) control measure are executed, and modify network topology structure；
(18) next integration step state is iterated to calculate；
(19) it discriminates whether to have arrived this full dynamic simulation end time；If having terminated, execute step (20)；Otherwise, it holds
Row step (11)；
(20) full dynamic simulation result is counted；Assess electricity net safety stable control strategy, judge system whether unstability, system
Whether there is or not unusual service conditions for element；Save check result；
(21) it discriminates whether that all preset failure scenes have been checked to finish；If so, going to step (22)；Otherwise, step is executed
(10)；
(22) it checks and finishes, export all check results.
2. the method as described in claim 1, which is characterized in that according to the topological constraints of the electricity net safety stable control strategy
And trend constraint, the characterization device and its state of characterization grid operation mode are extracted, characterization device table is automatically generated.
3. the method as described in claim 1, which is characterized in that the work using topology unit as characterization device state description
Tool, different topology unit is with "AND" logical connection, and the topology by identifying topology status Auto-matching security and stability control is about
Beam；Wherein, the logical expression of the topology unit are as follows:
……
……
In formula, S is status indicator, and whether characterization topology unit current state matches；If S is very, to show that topological constraints meet item
Part；Otherwise, topological constraints are unsatisfactory for condition；N is that mode sum is moved back in the corresponding throwing of the topology unit；LiIt is k of topology unit
Assembled state is moved back in i-th kind of throwing that element is constituted, and is discontented otherwise if its value is that the true respresentation assembled state meets topological constraints
Foot；mjIndicate j-th of element investment in the topology unit,
If true, j-th of element exits in the topology unit, mkIndicating should
K-th of element investment in topology unit,
If true, k-th of element exits in the topology unit.
4. the method as described in claim 1, which is characterized in that the trend constraint, including inspected feature equipment, movement threshold value
With differentiation logic；By the logic discrimination to individual features equipment state and movement threshold value, corresponding state is exported；The trend is about
Beam can be made of several constraint conditions, and each constraint condition defines trend constraint state with "AND" logical course.
5. the method as described in claim 1, which is characterized in that important according to the electricity net safety stable control strategy, equipment
Degree or user demand form fault message collection, and faulty equipment, fault type, failure is selected to occur and eliminate the time, automatic raw
At any multiple preset failure scene.
6. the method as described in claim 1, which is characterized in that based on initial trend, the whole network dynamic element and its accordingly after
Electric protection and control system model simulate electromechanical transient and long term dynamics process after large disturbances occur, complete extensive
The overall process automatic Check of electricity net safety stable control strategy model.
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