CN104779608B - Safe stable on-line additional emergency control method of power system based on off-line strategy - Google Patents
Safe stable on-line additional emergency control method of power system based on off-line strategy Download PDFInfo
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- CN104779608B CN104779608B CN201410692578.8A CN201410692578A CN104779608B CN 104779608 B CN104779608 B CN 104779608B CN 201410692578 A CN201410692578 A CN 201410692578A CN 104779608 B CN104779608 B CN 104779608B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004364 calculation method Methods 0.000 claims abstract description 13
- 238000011156 evaluation Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 8
- 238000013097 stability assessment Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000011158 quantitative evaluation Methods 0.000 description 1
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Classifications
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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
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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
Abstract
The invention discloses a safe stable on-line additional emergency control method of a power system, and belongs to the technical field of safe stable emergency control of the power system. The method disclosed by the invention comprises the following steps: generating safe stable electric network operating fault surface data which is assessed on line by using safety control real-time information as a standard, performing an on-value control measure of an off-line strategy, in the measure space of additional control, generating safe stable on-line assessment calculation examples through the enumerated combination of the control measure, based on a cluster calculating platform, preferentially processing the calculation examples with a small control cost, updating the additional control measure combination which has a small control cost and can ensure the safety and the stability of the electric network to a safety control device, and after an expected failure occurs, implementing the on-value control measure and the on-line additional control measure of the off-line strategy at the same time for the electric network. The method disclosed by the invention can effectively reduce the probability that the safety and the stability of the electric network cannot be ensured after emergency control.
Description
Technical field
The invention belongs to power system safety and stability emergent control technical field, more precisely, the present invention relates to a kind of
Suitable for the method for the online additional emergency control on the basis of power system safety and stability emergent control off-line strategy.
Background technology
Safety and stability emergency control system (referred to as Safety system) is the second defence line of electricity net safety stable, reliability
Require very high.In order to adapt to the operation of power networks operating mode of complexity, by carrying out substantial amounts of security and stability analysis calculating to electrical network, and tie
Engineering experience is closed, Off-line control Policy Table is formulated by conservatism.Under normal circumstances, controlled based on Off-line control Policy Table
The Safety system of system, it can be ensured that the electricity net safety stable after forecast failure generation, but, still suffer from and electrical network actual motion work
Condition mismatch, the probability that electricity net safety stable requirement can not be met.With the increase of electrical network scale, operation of power networks characteristic will more
Complexity, Off-line control strategy can also be increased with the probability of electrical network actual operating mode mismatch, the wind of power network safety operation
Danger also will increase.
In order to overcome the inherent defect of Off-line control strategy, " on-line pre-decision system, real-time matching " emergent control technology is in state
Some engineer applieds are obtained in interior external power grid, due to the calculating time of bulk power grid safety and stability emergent control " on-line pre-decision system "
Generally need a few minutes, and the operating condition of bulk power grid is possible to occur than larger change within this few minutes, by
The online emergency control policy that line computation is obtained there is also with electrical network actual operating mode mismatch, electricity net safety stable can not be met
The probability of requirement, simply compared with Off-line control strategy, its probability is reduced.Affect " on-line pre-decision system, real-time matching "
One of key factor of emergent control Technique Popularizing application is to be difficult to the adaptability to strategy of on-line to carry out quantitative evaluation, generally
Still the applicable elements of online strategy are preset by rule of thumb, and its reliability is difficult to ensure that.
In sum, the emergent control based on off-line strategy ensure that the peace of electrical network under the most of operating conditions of electrical network
It is complete stable, but the precision of control strategy is not high, generally too guards, and controlled quentity controlled variable is excessive；Emergent control based on on-line pre-decision system
Tactful high precision, but its reliability still relies on experience.
The content of the invention
The present invention seeks to：For deficiency of the prior art, there is provided a kind of power system security based on off-line strategy
Stablize online additional emergency control method.The method comprehensive utilization is based on the emergent control of off-line strategy and based on on-line pre-decision system
Two kinds of technical schemes of emergent control advantage, obtain reasonable balance between the two in control accuracy and reliability, effectively
Reduce cannot ensure the probability of electricity net safety stable after emergent control.
The present invention ultimate principle be：Substantial amounts of cases of engineering shows that off-line strategy is transported in the great majority of electrical network
The safety and stability of electrical network is ensure that under row operating mode.If can be on the basis of off-line strategy, then the control of additional on-line pre-decision system
Strategy, and the whether applicable elements of the control measure of additional on-line pre-decision system after the forecast failure for proposing occurs, do not rely on Jing
Test setting.Compared with the Safety system of only off-line strategy, this technical scheme is higher to the adaptability of operation of power networks operating mode, control
Precision processed is higher；And compared with the Safety system of only strategy of on-line, the engineering practicability of this technical scheme is higher, reliability
It is higher.
Specifically, the present invention employs the following technical solutions realization, including following two parts content：
Part I is the generation and refreshing of online additional control combined measure, is comprised the following steps：
1-1) at power grid regulation center, collect in real time send in all security control devices in Safety system plant running state,
Communication port state, pressing plate state, definite value, Off-line control Policy Table and electrical network real-time running state information, make constantly by collecting
The corresponding operation of power networks moment is calculated for online additional control combined measure OMA meter, t is designated as0；
The Off-line control Policy Table includes that combinations of states, element/passway for transmitting electricity tide is thrown/stopped to pressing plate combinations of states, element
Stream combination, definite value combination, forecast failure, classification SP of safety and stability problem and control measure combination 7 are arranged totally；
Classification SP of the safety and stability problem refer to static security stable, transient safe and stable and dynamic security it is stable and
Its combination；
The control measure refer to control object and its controlled quentity controlled variable；
The security control device after line additional control combined measure OMA refers to that forecast failure occurs is in Off-line control Policy Table
In the control measure combination that is superimposed again on the basis of the Off-line control combined measure that searches；
1-2) at power grid regulation center, first, according to the plant running state sent in all security control devices in Safety system
With communication port state, determine each security control device current with reference to Safety system framework model and communication port structural model
The function that moment can implement, then, the work(that can be implemented at current time according to each security control device in Safety system respectively
Can, electrical network real-time running state, pressing plate state and the definite value sent on meter and security control device, recognize each security control device can in value
Control measure space CM, then for each forecast failure that security control device is defendd, transported in real time according to the electrical network given in security control device
Row state, pressing plate state and definite value, search respectively the SP and phase corresponding to each forecast failure from Off-line control Policy Table
Answer in value Off-line control combined measure OM；
The security control device in the controllable measure space CM of value refers to that security control device is to electricity under electrical network current operating conditions
The set of control object that net can be taken and that real execution can be obtained and its controlled quentity controlled variable；
If corresponding the referring in value Off-line control combined measure OM of the forecast failure is sent out under electrical network current operating conditions
After having given birth to the forecast failure, security control device is arranged for the control that can obtain real execution that the forecast failure is taken electrical network
Apply combination；
1-3) at power grid regulation center, first, using delivering to this grade of regulation and control center in all security control devices in Safety system
Electrical network real-time traffic information newest being used for substitute that the online dynamic security Stability Assessment system in this grade of regulation and control center provides
The throwing of counter element in the operation of power networks state profile data of safety on line Stability Assessment/stop state and Power Flow Information, then to place
Operation of power networks state profile data after reason carries out Load flow calculation, if Load flow calculation convergence, into step 1-4), otherwise, return
Return step 1-1)；
1-4) at power grid regulation center, each forecast failure that Safety system is defendd is respectively directed to, is counted and step
The OMA meter that OM corresponding to the forecast failure for 1-2) searching is performed is calculated, once certain forecast failure OMA it has been determined that if
Respectively by t0, OM and OMA flush to defend the forecast failure security control device online additional control Policy Table in the anticipation
The corresponding OMA meter of failure calculates corresponding operation of power networks moment, OMA meter and calculates the OM and OMA at corresponding operation of power networks moment；
If the OMA of all forecast failures that Safety system is defendd has determined and flushes to corresponding security control device
In online additional control Policy Table, then return to step 1-1), otherwise, the OMA meter for proceeding remaining forecast failure is calculated and phase
The refreshing of relevant information in the online additional control Policy Table for answering；
If during OMA meter is calculated, current time and t0Difference calculate duration threshold value more than OMA meter, then stop remaining
The OMA meter for not calculating the forecast failure of OMA is calculated, and the OMA of these forecast failures is set to into empty set, and by t0And and these
Forecast failure corresponding OM and OMA flushes to respectively the online additional control Policy Table of the security control device for defending these forecast failures
In corresponding with forecast failure OMA meter calculate corresponding operation of power networks moment, OMA meter and calculate the OM at corresponding operation of power networks moment
And OMA, return to step 1-1)；
The online additional control Policy Table includes that forecast failure, OMA meter calculate corresponding operation of power networks moment tc、tcWhen
The OM and OMA at quarter 4 is arranged totally；
Part II is the control measure of the actual execution of security control device after the forecast failure that Safety system is defendd occurs
It is determined that, comprise the following steps：
2-1) when the security control device in Safety system detects its forecast failure defendd to be occurred, in security control device
In, forecast failure generation moment is designated as into t1；
The OMA meter corresponding to the forecast failure 2-2) is searched from online additional control Policy Table and calculates corresponding electrical network
Time of running tc、tcThe OM and OMA at moment, and according to gather and be pooled to electrical network real-time running state information and controllable measure letter
Breath, with reference to security control device current pressing plate state, definite value, searches corresponding to the forecast failure from Off-line control Policy Table
In value Off-line control combined measure OM；
If 2-3) t1-tcLess than the OMA effective time threshold values of setting, and search from online additional control Policy Table
OM it is identical with the control object of both the OM searched from Off-line control Policy Table, then will search from Off-line control Policy Table
Rope to OM and OMA both be superimposed occur as the forecast failure after actual executions of security control device control measure, otherwise, a general
Control measure of the OM searched from Off-line control Policy Table as the actual execution of security control device after forecast failure generation；
Security control device takes electrical network the control measure of actual execution, and return to step 2-1).
Above-mentioned technical proposal is further characterized by：The step of Part I 1-4) in forecast failure OMA meter
Calculation method is as follows：
For forecast failure, 1-2 the step of meter and Part I) OM corresponding to the forecast failure that searches execution,
The step of carrying out Part I 1-2) SP corresponding to the forecast failure that searches online evaluation；If OM pacifies accordingly after performing
Total stability ensure that, then the OMA of the forecast failure is set to into empty set in online additional control Policy Table；Otherwise, first
In the OM passed through in controllable measure space CM is worth corresponding to removal forecast failure of security control device, obtain can be used in OMA meter
The optional control measure space CM' for calculating, then will according to the difference of control accuracy of measurement ε of the different type control object of setting
Ask, can be as the control object of continuous quantity control, by the maximum x of its controlled amounts for controlled quentity controlled variable in CM'maxIt is converted
Into the equally distributed n gear of controlled quentity controlled variable, wherein n is (xmax/ ε+0.5) round after numerical value so that the 1st of the control object
It is x that the controlled quentity controlled variable of individual optional control measure is the controlled quentity controlled variable of the 0, the 2nd optional control measuremax/ n, the 3rd optional control measure
Controlled quentity controlled variable be 2xmax/ n, the like, the controlled quentity controlled variable of (n+1)th optional control measure is xmax, then can by all in CM'
Control measure are selected to carry out enumerating combination, and 1-2 the step of meter and Part I) OM corresponding to the forecast failure that searches holds
On the basis of row, one group of different safety and stability online evaluation example of optional control measure combination producing, finally, root are superimposed respectively
The all safety and stability online evaluation examples for generating are entered according to the ascending order of the control cost of optional control measure combination
Row sequence, then according to the sequence number of online evaluation example, based on cluster Computing Platform, by the parallel calculating scheduling method of example,
To all safety and stability online evaluation examples for generating, 1-2 the step of Part I is carried out respectively) the forecast failure institute that searches
The online evaluation of corresponding SP, until the assessment result of at least one example is safety and stability, then stops remaining all calculations
The calculating of example, the optional control measure that will be superimposed number in front and assessment result is the example of safety and stability with sequence combine as
The OMA of forecast failure, if the assessment result of all examples is not safety and stability, by the OMA of forecast failure empty set is set to.
Beneficial effects of the present invention are as follows：It is of the invention to propose on the basis of off-line strategy, then additional on-line pre-decision system
The design concept of control strategy, the control reliability and control accuracy that the present invention is just determined from principle is not less than tradition certainly
The control method based on off-line strategy.The whether applicable elements of the control measure of additional on-line pre-decision system proposed by the present invention,
It is the on-line automatic generation of safety and stability characteristic according to electrical network, does not rely on experience setting, solves substantially and how to judge
A difficult problem for line decision-premaking control strategy effectiveness, largely realizes off-line strategy adaptive with on-line pre-decision system control strategy
Should cooperate with.Compared with the Safety system of only off-line strategy, this technical scheme is higher to the adaptability of operation of power networks operating mode, control
Precision processed is higher；Compared with the Safety system of only strategy of on-line, the engineering practicability of this technical scheme is higher, reliability more
It is high.
Description of the drawings
Fig. 1 is the flow chart of the inventive method Part I.
Fig. 2 is the flow chart of the inventive method Part II.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings.
Step 1 is described in Fig. 1, collects the real time information of security control device, i.e., at power grid regulation center, peace is collected in real time
Plant running state, communication port state, pressing plate state, definite value, the Off-line control plan sent in all security control devices in control system
Sketch form and electrical network real-time running state information, will collect the moment as the corresponding electrical network of online additional control combined measure calculating
The time of running, it is designated as t0, into step 2).
The Off-line control Policy Table includes that combinations of states, element/passway for transmitting electricity tide is thrown/stopped to pressing plate combinations of states, element
Stream combination, definite value combination, forecast failure, the classification of safety and stability problem and control measure combination 7 are arranged totally, are artificial offline settings
's；
Classification SP of the safety and stability problem refer to static security stable, transient safe and stable and dynamic security it is stable and
Its combination；
The control measure refer to control object and its controlled quentity controlled variable；
The security control device after line additional control combined measure OMA refers to that forecast failure occurs is in Off-line control Policy Table
In the control measure combination that is superimposed again on the basis of the Off-line control combined measure that searches.
Step 2 is described in Fig. 1, recognize Safety system be worth controllable measure space, the safety and stability problem of defence and
It is being worth Off-line control combined measure, i.e., at power grid regulation center, first, according to what is sent in all security control devices in Safety system
Plant running state and communication port state, each peace is determined with reference to Safety system framework model and communication port structural model
The function that control device can be implemented at current time, then, respectively according to each security control device in Safety system at current time
The function that can implement, electrical network real-time running state, pressing plate state and the definite value sent on meter and security control device recognizes each peace control
Device being worth controllable measure space, then for each forecast failure that security control device is defendd, according to what is sent in security control device
Electrical network real-time running state, pressing plate state and definite value, search respectively each forecast failure institute right from Off-line control Policy Table
The SP that answers and corresponding in value Off-line control combined measure.
The security control device in the controllable measure space CM of value refers to that security control device is to electricity under electrical network current operating conditions
The set of control object that net can be taken and that real execution can be obtained and its controlled quentity controlled variable；
If corresponding the referring in value Off-line control combined measure OM of the forecast failure is sent out under electrical network current operating conditions
After having given birth to the forecast failure, security control device is arranged for the control that can obtain real execution that the forecast failure is taken electrical network
Apply combination.
Step 3 is described in Fig. 1, carries out electricity net safety stable assessment section data integration and Load flow calculation, i.e., in electricity
Net regulation and control center, first, using the electrical network real time execution letter that this grade of regulation and control center is delivered in all security control devices in Safety system
Cease to substitute that the online dynamic security Stability Assessment system in this grade of regulation and control center provides is newest for safety on line Stability Assessment
Operation of power networks state profile data in counter element throwing/stop state and Power Flow Information, then to the operation of power networks shape after process
State profile data carries out Load flow calculation, if Load flow calculation convergence, into step 4), otherwise, return to step 1)；
Step 4 is described in Fig. 1, carries out the safety and stability check and the calculating of OMA of OM, i.e., at power grid regulation center,
Each forecast failure that Safety system is defendd is respectively directed to, is counted and step 2) OM corresponding to the forecast failure that searches
The OMA meter of execution is calculated.
Once certain forecast failure OMA it has been determined that if respectively by t0, OM and OMA flush to defence the forecast failure
Security control device online additional control Policy Table in corresponding with forecast failure OMA meter when calculating corresponding operation of power networks
Quarter, OMA meter calculate the OM and OMA at corresponding operation of power networks moment.
If the OMA of all forecast failures that Safety system is defendd has determined and flushes to corresponding security control device
In online additional control Policy Table, then return to step 1), otherwise, the OMA meter for proceeding remaining forecast failure is calculated and corresponding
Online additional control Policy Table in relevant information refreshing.
If during OMA meter is calculated, current time and t0Difference more than OMA meter calculate duration threshold value (generally can set
It is set to 5 minutes), then the OMA meter for stopping the forecast failure that remainder does not calculate OMA is calculated, and the OMA of these forecast failures is put
For empty set, and by t0And OM and OMA corresponding with these forecast failures flushes to respectively the peace control dress for defending these forecast failures
OMA meter corresponding with forecast failure calculates corresponding operation of power networks moment, OMA meter and calculates institute in the online additional control Policy Table for putting
The OM and OMA at corresponding operation of power networks moment, return to step 1).
The online additional control Policy Table includes that forecast failure, OMA meter calculate corresponding operation of power networks moment tc、tcWhen
The OM and OMA at quarter 4 is arranged totally；
Wherein, it is contemplated that the circular of the OMA of failure is as follows：
For certain forecast failure, meter and Fig. 1-step 2) OM corresponding to the forecast failure that searches execution, carry out
Fig. 1-step 2) SP corresponding to the forecast failure that searches online evaluation, if corresponding security and stability can after OM is performed
Ensure, then the OMA of the forecast failure is set to into empty set in online additional control Policy Table, otherwise, first, in security control device
By removing the OM corresponding to forecast failure in controllable measure space CM is worth, obtain can be used in the optional control of OMA meter calculation
Measure space CM', then, requires, in CM' according to the different of control accuracy of measurement ε of the different type control object of setting
Controlled quentity controlled variable can be as the control object of continuous quantity control, by the maximum x of its controlled amountsmaxConvert thereof into controlled quentity controlled variable uniform
N gear of distribution, wherein n is (xmax/ ε+0.5) round after numerical value so that the 1st of the control object optional control is arranged
It is x that the controlled quentity controlled variable applied is the controlled quentity controlled variable of the 0, the 2nd optional control measuremax/ n, the controlled quentity controlled variable of the 3rd optional control measure is
2xmax/ n, the like, the controlled quentity controlled variable of (n+1)th optional control measure is xmax, then by all optional control measure in CM'
Carry out enumerating combination, and in meter and Fig. 1-step 2) on the basis of the OM corresponding to the forecast failure that searches performs, fold respectively
Plus the safety and stability online evaluation example that one group of optional control measure combination producing is different, finally, according to optional control measure group
The order that the control cost of conjunction is ascending is ranked up to all safety and stability online evaluation examples for generating, then according to online
The sequence number of assessment example, based on cluster Computing Platform, by the parallel calculating scheduling method of example, all safety to generating are steady
Determine online evaluation example, Fig. 1-step 2 carried out respectively) online evaluation of SP corresponding to the forecast failure that searches, until extremely
The assessment result of a rare example is safety and stability, then stop the calculating of remaining all examples, will with sequence number front and
Assessment result be safety and stability example in be superimposed optional control measure combine as forecast failure OMA, if all examples
Assessment result be not safety and stability, then the OMA of forecast failure is set to into empty set.
The sum of the forecast failure that M is defendd by Safety system.
Step 1 is described in Fig. 2, judges whether forecast failure occurs, i.e., when the security control device in Safety system is detected
When occurring to its forecast failure defendd, in security control device, forecast failure generation moment is designated as into t1。
Step 2 is described in Fig. 2, is searched in value control measure, i.e., search this from online additional control Policy Table
OMA meter corresponding to forecast failure calculates corresponding operation of power networks moment tc、tcThe OM and OMA at moment, and according to gathering and collect
To electrical network real-time running state information and controllable Action Message, with reference to security control device current pressing plate state, definite value, from offline control
Search in Policy Table processed corresponding to the forecast failure in value Off-line control combined measure OM.
Step 3 is described in Fig. 2, it is determined that the actual control measure for performing, even t1-tcWhen effective less than the OMA of setting
Long threshold value (generally could be arranged to 10 minutes), and the OM searched from online additional control Policy Table with from Off-line control
The control object of both the OM searched in Policy Table is identical, then by the OM searched from Off-line control Policy Table and OMA bis-
Person is superimposed the control measure of the actual execution of security control device after occurring as the forecast failure, otherwise, only will be from Off-line control strategy
Control measure of the OM searched in table as the actual execution of security control device after forecast failure generation；
Security control device takes electrical network the control measure of actual execution, and return to step 1).
Although the present invention is disclosed as above with preferred embodiment, embodiment is not for limiting the present invention's.Not
Depart from the spirit and scope of the present invention, any equivalence changes done or retouching also belong to the protection domain of the present invention.Cause
The content that this protection scope of the present invention should be defined with claims hereof is as standard.
Claims (2)
1. the online additional emergency control method of power system safety and stability of off-line strategy is based on, it is characterised in that including following
Two parts content：
Part I is the generation and refreshing of online additional control combined measure, is comprised the following steps：
1-1) at power grid regulation center, plant running state, the communication sent in all security control devices in Safety system is collected in real time
Channel statuses, pressing plate state, definite value, Off-line control Policy Table and electrical network real-time running state information, will collect the moment as
Line additional control combined measure OMA meter calculates the corresponding operation of power networks moment, is designated as t0；
The Off-line control Policy Table includes that combinations of states, element/passway for transmitting electricity trend group is thrown/stopped to pressing plate combinations of states, element
The combination of conjunction, definite value combination, forecast failure, classification SP of safety and stability problem and control measure 7 is arranged totally；
Classification SP of the safety and stability problem refers to that stable static security, transient safe and stable and dynamic security are stablized and its group
Close；
The control measure refer to control object and its controlled quentity controlled variable；
The security control device after line additional control combined measure OMA refers to that forecast failure occurs is searched in Off-line control Policy Table
Rope to Off-line control combined measure on the basis of be superimposed again control measure combination；
1-2) at power grid regulation center, first, according to the plant running state sent in all security control devices in Safety system and logical
Letter channel statuses, determine each security control device at current time with reference to Safety system framework model and communication port structural model
The function that can implement, then, the function that can be implemented at current time according to each security control device in Safety system respectively, meter
And electrical network real-time running state, pressing plate state and the definite value given in security control device, recognize arranging value is controllable for each security control device
Space CM is applied, then for each forecast failure that security control device is defendd, according to the electrical network real time execution shape sent in security control device
State, pressing plate state and definite value, search respectively SP corresponding to each forecast failure and corresponding from Off-line control Policy Table
In value Off-line control combined measure OM；
The security control device in the controllable measure space CM of value refers to that under electrical network current operating conditions, security control device is to electrical network energy
The set of control object enough take and that real execution can be obtained and its controlled quentity controlled variable；
If corresponding the referring in value Off-line control combined measure OM of the forecast failure there occurs under electrical network current operating conditions
After the forecast failure, the control measure group that can obtain real execution that security control device is taken electrical network for the forecast failure
Close；
1-3) at power grid regulation center, first, using the electricity that this grade of regulation and control center is delivered in all security control devices in Safety system
Net real-time traffic information is newest for online come substitute that the online dynamic security Stability Assessment system in this grade of regulation and control center provides
The throwing of counter element in the operation of power networks state profile data of safety and stability evaluation/stop state and Power Flow Information, then to process after
Operation of power networks state profile data carry out Load flow calculation, if Load flow calculation convergence, into step 1-4), otherwise, return step
Rapid 1-1)；
1-4) at power grid regulation center, each forecast failure that Safety system is defendd is respectively directed to, is counted and step 1-2)
The OMA meter that OM corresponding to the forecast failure for searching is performed is calculated, once certain forecast failure OMA it has been determined that if distinguish
By t0, OM and OMA flush to defend the forecast failure security control device online additional control Policy Table in the forecast failure
Corresponding OMA meter calculates corresponding operation of power networks moment, OMA meter and calculates the OM and OMA at corresponding operation of power networks moment；
If the OMA of all forecast failures that Safety system is defendd has determined and flushes to the online of corresponding security control device
In additional control Policy Table, then return to step 1-1), otherwise, the OMA meter for proceeding remaining forecast failure is calculated and corresponding
The refreshing of relevant information in online additional control Policy Table；
If during OMA meter is calculated, current time and t0Difference calculate duration threshold value more than OMA meter, then stop remaining without meter
The OMA meter for calculating the forecast failure of OMA is calculated, and the OMA of these forecast failures is set to into empty set, and by t0And envision event with these
Hinder corresponding OM and OMA flush to respectively defend these forecast failures security control device online additional control Policy Table in it is pre-
Think that the corresponding OMA meter of failure calculates corresponding operation of power networks moment, OMA meter and calculates the OM and OMA at corresponding operation of power networks moment,
Return to step 1-1)；
The online additional control Policy Table includes that forecast failure, OMA meter calculate corresponding operation of power networks moment tc、tcMoment
OM and OMA 4 are arranged totally；
Part II is the determination of the control measure of the actual execution of security control device after the forecast failure that Safety system is defendd occurs,
Comprise the following steps：
2-1) when the security control device in Safety system detects its forecast failure defendd to be occurred, in security control device, will
Forecast failure generation moment is designated as t1；
The OMA meter corresponding to the forecast failure 2-2) is searched from online additional control Policy Table and calculates corresponding operation of power networks
Moment tc、tcThe OM and OMA at moment, and according to gathering and being pooled to electrical network real-time running state information and controllable Action Message, tie
Close current pressing plate state, the definite value of security control device, search from Off-line control Policy Table corresponding to the forecast failure in value
Off-line control combined measure OM；
If 2-3) t1-tcLess than the OMA effective time threshold values of setting, and the OM searched from online additional control Policy Table
It is identical with the control object of both the OM searched from Off-line control Policy Table, then will search from Off-line control Policy Table
OM and OMA both be superimposed occur as the forecast failure after the actual execution of security control device control measure, otherwise, will from from
Control measure of the OM searched in line traffic control Policy Table as the actual execution of security control device after forecast failure generation；
Security control device takes electrical network the control measure of actual execution, and return to step 2-1).
2. the online additional emergency control method of the power system safety and stability based on off-line strategy according to claim 1,
Characterized in that, the step of Part I 1-4) in forecast failure OMA meter calculate method it is as follows：
For forecast failure, 1-2 the step of meter and Part I) OM corresponding to the forecast failure that searches execution, carry out
The step of Part I 1-2) SP corresponding to the forecast failure that searches online evaluation；If OM is corresponding safe steady after performing
It is qualitative to ensure that, then the OMA of the forecast failure is set to into empty set in online additional control Policy Table；Otherwise, first in peace
The OM passed through in controllable measure space CM is worth corresponding to removal forecast failure of control device, obtains can be used in OMA meter calculation
Optional control measure space CM', then requires, pin according to the different of control accuracy of measurement ε of the different type control object of setting
Can be as the control object of continuous quantity control, by the maximum x of its controlled amounts to controlled quentity controlled variable in CM'maxConvert thereof into control
Equally distributed n gear is measured, wherein n is (xmax/ ε+0.5) round after numerical value so that the 1st of the control object is optional
It is x that the controlled quentity controlled variable of control measure is the controlled quentity controlled variable of the 0, the 2nd optional control measuremax/ n, the control of the 3rd optional control measure
Measure as 2xmax/ n, the like, the controlled quentity controlled variable of (n+1)th optional control measure is xmax, then by all optional control in CM'
Measure carries out enumerating combination, and 1-2 the step of meter and Part I) bases that perform of the OM corresponding to the forecast failure that searches
On plinth, one group of different safety and stability online evaluation example of optional control measure combination producing is superimposed respectively, finally, according to optional
The order that the control cost of control measure combination is ascending is ranked up to all safety and stability online evaluation examples for generating,
Again according to the sequence number of online evaluation example, based on cluster Computing Platform, by the parallel calculating scheduling method of example, to what is generated
All safety and stability online evaluation examples, 1-2 the step of Part I is carried out respectively) SP corresponding to the forecast failure that searches
Online evaluation, until the assessment result of at least one example is safety and stability, then stop the calculating of remaining all examples,
The optional control measure being superimposed in front and assessment result is the example of safety and stability with sequence number are combined as forecast failure
OMA, if the assessment result of all examples is not safety and stability, the OMA of forecast failure is set to into empty set.
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| CN106446332B (en) * | 2016-08-18 | 2019-11-05 | 国电南瑞科技股份有限公司 | A kind of method that channel topology automatically generates between safety and stability emergence control |
| CN109217298B (en) * | 2018-09-29 | 2020-08-21 | 南瑞集团有限公司 | Emergency control strategy calculation method for coping with dynamic process successive events |
| CN109742751B (en) * | 2018-11-16 | 2022-08-05 | 国电南瑞科技股份有限公司 | Method, device and system for identifying and serving control strategy of security control device of power system |
| CN109449940B (en) * | 2018-12-28 | 2022-04-19 | 国电南瑞科技股份有限公司 | Emergency control wide area coordination method for coping with dynamic process succession events |
| CN110556828B (en) * | 2019-09-25 | 2022-08-30 | 国电南瑞科技股份有限公司 | Online safety and stability emergency control method and system adaptive to equipment power flow change |
| CN110943448B (en) * | 2019-12-03 | 2021-06-18 | 国电南瑞科技股份有限公司 | Security control device refusing action fault simulation method, system and storage medium |
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