CN106099905A - A kind of power system transient stability emergency control method based on weak steady schematic memory - Google Patents
A kind of power system transient stability emergency control method based on weak steady schematic memory Download PDFInfo
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
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Abstract
The invention discloses a kind of power system transient stability emergency control method based on weak steady schematic memory, belong to Power System and its Automation technical field.The present invention uses large-scale parallel cluster computing to solve the online emergent control of system of weak steady pattern transient safe and stable, calculate the transient rotor angle stability emergency control policy under the influence of Multimodal interaction, if exciting other potential Failure Models during leading Failure Model control measure schedule sequences Security Checking, then terminate leading Failure Model control measure schedule sequences transient safe and stable quantitative evaluation, and carry out enumerating the schedule sequences that combination formation is new by the leading Failure Model control measure schedule sequences after the control measure schedule sequences of potential Failure Model and rollback, resubmit parallel cluster system and carry out transient safe and stable quantitative evaluation, realize the coordination of control measure between many Failure Models.
Description
Technical field
The invention belongs to Power System and its Automation technical field, the present invention relates to more precisely a kind of based on weak surely
The power system transient stability emergency control method of mould-fixed memory.
Background technology
Emergent control is power system owing to large disturbances enters the state of emergency or extreme emergency state, for preventing system stability
Destruction, operational factor seriously expand further beyond prescribed limit and accident and cause the control having a power failure on a large scale and carry out.Closely
Nian Lai, the online emergent control system of transient safe and stable emergent control framework based on " on-line pre-decision system, real-time matching " research and development
The most multiple net provincial region electrical network of uniting is applied, in terms of Transient Stability Control, all for forecast failure after
To potential in transregional interconnected network, single leading Failure Model, causes due to Multimodal interaction that leading Failure Model is pernicious drills
The problem changed still lacks effective coping strategy, and the complicated change of bulk power grid Failure Model may cause the negative effect of stability contorting
Should.
In the case of the impact of transient stability Multimodal interaction, the control measure for a certain transient stability pattern are stable to other
Pattern may lose efficacy and even bring the control negative effect problem of danger, and extreme situation even can excite the mistake in succession of other pattern
Surely.Accordingly, it would be desirable to the conversion of stable form in research reply dynamic process, pernicious evolution successfully manage strategy, formulate urgent
Control device optimizing path, it is to avoid random examination is gathered, by controlling strategy search procedure and executed weak steady mode emergency
Memory, grasp system unstability Evolution Modes rule, improve emergent control reliability, decision search efficiency also reduces control generation
Valency.
When power system due to more serious thus enter the state of emergency, for preventing power system transient stability from destroying, operational factor is tight
Heavily expand further beyond prescribed limit and accident, need to take corresponding emergent control, if desired, it is allowed to loss is a small amount of negative
Lotus.The searching algorithm of these emergent control measures, except repeatedly examination is gathered in addition to method, is mostly focused on and various stablizes quantizating index
Sensitivity techniques to control variable.But this algorithm remains at present in limitation, on the one hand, stablize quantizating index and control variable
Between and non-linear relation, use one order cannot guarantee accuracy, and Higher Order Sensitivities is difficult to Analytical Expression；The opposing party
Face, cuts machine, cutting load itself is discrete control, does not meets the stable quantizating index supposed in Calculation of Sensitivity to control variable even
Continuous can be micro-, when unstability Morphological Transitions, original cut machine, cutting load control strategy will no longer adapt to new Failure Model.
Summary of the invention
It is an object of the invention to: in order to improve Failure Model evolution phenomenon identification ability in interconnected network, grasp weak surely
Power system transient stability emergency control policy under mould-fixed, provides technical foundation for transient stability emergent control, be given a kind of based on
The power system transient stability emergency control method of weak steady schematic memory.The method passes through the time-domain simulation results under typical case's disturbance,
Carry out the transient stability margin under the system image of weak steady pattern to calculate, grasp peace control and cut each weak steady pattern pair under machine measure
The stability margin Changing Pattern answered, formulation system is dominated Failure Model change post-emergency control measure searching route, is reduced and sound out
Searching times, improves emergent control reliability.
Specifically, the present invention uses following technical scheme to realize, and comprises the following steps:
1) measure local electrical network electric parameters in real time from on-line stability control system platform, obtain electrical network typical way data, for anticipation
Fault set, theoretical to the identification of non-coherent pattern present in Critical Group after fault based on EEAC, it is thus achieved that to exchange section f={1,
2 ...., m} is the system weak steady Mode S of cut set={S1,S2,…,Sm, use EEAC to calculate each weak steady pattern lower critical group
In all equipped with cutting machine and perform the transient rotor angle stability participation factors of electromotor of substation, and by the descending shape that sorts successively
Become to cut accordingly machine control order, machine of cutting control sequence table corresponding for each weak steady pattern is shown as [G i 1, G i 2,…,G i *],
Wherein,mWeak steady pattern for existing is total,i=1~m, * represents foriPlant in system weak steady pattern Critical Group and join
Have machine of cutting and perform the total number of units of electromotor of substation；
2) a certain fault concentrated for forecast failure carries out power system transient stability time-domain-simulation, obtains with each weak steady pattern
For hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…, η m, it is assumed that
WhereinkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min =η k ；
Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, do not perform emergency control policy, otherwise,
Machine of the cutting control order answering Failure Model corresponding according to this fault phase is soundd out, and keeps the note to weak steady pattern during exploration
Recall, untilη min More than or equal to 0, terminate emergency control policy search；
3) forecast failure is concentrated all faults all according to step 2) process, obtain adapting under typical way weak steady Evolution Modes
Transient stability emergency control policy.
Technique scheme is further characterized by, described step 2) comprise the following steps:
2-1) a certain fault concentrated for forecast failure carries out power system transient stability time-domain-simulation, obtains with each weak steady pattern
For hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…, η m, it is assumed that
WhereinkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min =η k ；
Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, does not perform emergency control policy；
If 2-2)η min Less than 0, then according to system leading thekMachine of cutting control order corresponding to individual weak steady pattern is every time folded
Add a bench teat to visit, form exploration sequenceG k 1、G k 1+G k 2、G k 1+G k 2+G k 3..., when often step is soundd out, record is cut board number, is cut
Seat in the plane puts, excise electromotor general power and take to cut machine peace control measure after the angle stability nargin of system each weak steady patternη j ={η j 1,η j 2,…, η j m, whereinη j RepresentjThe system stability nargin of secondary exploration；
If 2-3) sound out machine of cutting every time after thekThe system angle stability nargin of individual weak steady patternη j k It is still minimum, then cuts machine
The non-initiating system of control strategy dominates Failure Model conversion, continues by step 2-2) sound out, untilη min More than or equal to 0, terminate tight
Anxious control strategy search, now the cutting board number, cut seat in the plane and put and excise electromotor general power and be under this fault of systematic memory
Transient stability emergency control policy, will now sound out number of timesjSecondary incision machine total amountG k 1+G k 2+…+G k j Submit urgent decision-premaking to
Control system；
If 2-4)jSecondary exploration cuts system angle stability nargin is minimum after machine weak steady pattern by thekIndividual becometIt is individual,
Show that cutting machine control strategy excites other weak steady patterns of system, causes system to dominate Failure Model and changes, the most such asj
More than 1 withkIndividual weak steady patternjOn the basis of cutting machine strategy memory result for-1 time, to cut machine command deployment direction no in change
Then directly machine command deployment direction is cut in change, along thetThe direction of individual weak steady pattern increases cuts machine controlled quentity controlled variable, forms new examination
Visit sequenceG t 1、G t 1+G t 2、G t 1+G t 2+G t 3..., and remember and cut board number accordingly, cut that seat in the plane is put, to excise electromotor total
Power and taking cuts the angle stability nargin of system each weak steady pattern after machine peace control measure, if thetIndividual weak steady pattern is cut
In machine control direction, a certain electromotor is positioned at simultaneouslykMachine of the cutting sequence of individual weak steady pattern, and control strategy memory display
Coincidence electromotor excises, then skip this electromotor；
2-5) as system dominate experience again after Failure Model changes sound out for J time after system dominate Failure Model and occur the most again
Change andη min More than or equal to 0, terminate emergency control policy search, asjMore than 1 by this fault incision machine total amountG k 1+G k 2
+…+G k j-1 +G t 1+G t 2+…+G t J Submit urgent decision-premaking control system to, asjEqual to 1 by this fault incision machine total amountG t 1+G t 2+…+G t J Submit urgent decision-premaking control system to；Dominate after Failure Model changes such as system and sound out again
Time system dominate Failure Model and continue again to convert, then repeat step 2-4), untilη min More than or equal to 0, terminate emergent control
Decision search.
Technique scheme is further characterized by, described step 2-1) in, imitate according to system time domain under typical fault
All electromotors are divided into the two crowds of S groups of complementation with section f as cut set and A group, all electromotors of section f sending end by true result
Composition S group, section f receiving end all electromotors composition A group, calculate, based on EEAC method, this pattern of hiving off being cut set section with f
The system angle stability nargin of lower system image.
Technique scheme is further characterized by, and in described step 3), concentrates all faults for forecast failure
Emergency control policy is searched for by multiple stage machine Parallel Implementation.
Beneficial effects of the present invention is as follows: the present invention, by the time-domain simulation results under typical case's disturbance, carries out weak steady mould
Transient stability margin under the system image of formula calculates, and grasps peace control and cuts the stability margin that under machine measure, each weak steady pattern is corresponding
Changing Pattern, formulation system dominates Failure Model change post-emergency control measure searching route, it is possible to reduce heuristic search number of times,
Improve emergent control reliability.It is interior at moving law that the present invention is conducive to electric power system dispatching operations staff to hold complication system,
For coordinating to formulate transient stability emergency control policy proposition basis, thus promote the effectiveness of security of system stability contorting with online
Automatization's calculated level.
Detailed description of the invention
Below in conjunction with example, the present invention is described in further detail.
One embodiment of the present of invention, its principle is to use large-scale parallel cluster computing solution weak steady pattern temporary
The online emergent control of system of state safety and stability, calculates the transient rotor angle stability emergency control policy under the influence of Multimodal interaction,
If exciting other potential Failure Models during leading Failure Model control measure schedule sequences Security Checking, then terminate leading
Failure Model control measure schedule sequences transient safe and stable quantitative evaluation, and the control measure of potential Failure Model are dispatched sequence
Leading Failure Model control measure schedule sequences after row and rollback carries out enumerating combination and forms new schedule sequences, resubmits
Parallel cluster system carries out transient safe and stable quantitative evaluation, thus realizes the coordination of control measure between many Failure Models.Specifically
Step is as follows:
Step 1: measure local electrical network electric parameters in real time from on-line stability control system platform, obtain electrical network typical way data, for
Forecast failure collection, theoretical to the identification of non-coherent pattern present in Critical Group after fault based on EEAC, it is thus achieved that to exchange section f
=1,2 ...., m} is the system weak steady Mode S of cut set={S1,S2,…,Sm, use EEAC to calculate under each weak steady pattern and face
All transient rotor angle stability participation factors performing the electromotor of substation equipped with machine of cutting in boundary group, and arrange successively by descending
Sequence is formed cuts machine control order accordingly, machine of cutting control sequence table corresponding for each weak steady pattern is shown as [G i 1, G i 2,…,G i *], wherein,mWeak steady pattern for existing is total,i=1~m, * represents foriPlant system weak steady pattern Critical Group
In equipped with cut machine perform substation the total number of units of electromotor.
Step 2: for forecast failure concentrate a certain fault carry out power system transient stability time-domain-simulation, obtain with each weak surely
Mould-fixed be hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…,η m, it is assumed that Qi ZhongkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min =η k ；Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, does not perform emergency control policy, no
Then, machine of the cutting control order answering Failure Model corresponding according to this fault phase is soundd out, and keeps weak steady pattern during exploration
Memory, untilη min More than or equal to 0, terminate emergency control policy search.Specifically, including following processing procedure:
Step 2-1: a certain fault concentrated for forecast failure carries out power system transient stability time-domain-simulation, obtains with each weak steady
Pattern be hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…, η m,
Assume whereinkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min
=η k ；Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, does not perform emergency control policy.
The computational methods of system angle stability nargin are: according to system time-domain simulation results under typical fault, by all
Motor is divided into the two crowds of S groups of complementation with section f as cut set and A group, and section f sending end all electromotors composition S group, section f is subject to
Hold all electromotors to form A group, calculate with the system of system image under this pattern of hiving off that f is cut set section based on EEAC method
Angle stability nargin.
Step 2-2: ifη min Less than 0, then according to system leading thekMachine of cutting corresponding to individual weak steady pattern controls suitable
Sequence each superposition one bench teat is visited, and forms exploration sequenceG k 1、G k 1+G k 2、G k 1+G k 2+G k 3..., when often step is soundd out, record is cut
Board number, cut seat in the plane and put, excise electromotor general power and taking and cut the merit angle of system each weak steady pattern after machine peace control measure
Stability marginη j ={η j 1,η j 2,…, η j m, whereinη j RepresentjThe system stability nargin of secondary exploration.
Step 2-3: if sound out machine of cutting every time after thekThe system angle stability nargin of individual weak steady patternη j k It is still
Little, then cut the non-initiating system of machine control strategy and dominate Failure Model conversion, continue to sound out by step 2-2, untilη min It is more than or equal to
0, terminate emergency control policy search, now the cutting board number, cut seat in the plane and put and excise electromotor general power and be of systematic memory
Transient stability emergency control policy under this fault, will now sound out number of timesjSecondary incision machine total amountG k 1+G k 2+…+G k j Submit to
Urgent decision-premaking control system.
Step 2-4: if thejSecondary exploration cuts system angle stability nargin is minimum after machine weak steady pattern by thekIndividual become
ThetIndividual, show that cutting machine control strategy excites other weak steady patterns of system, causes system to dominate Failure Model and changes,
The most such asjMore than 1 withkIndividual weak steady patternjChange, on the basis of cutting machine strategy memory result for-1 time, machine of cutting to control to search
Suo Fangxiang (asjMachine command deployment direction is cut equal to 1 direct change), alongtThe direction of individual weak steady pattern increases cuts machine
Controlled quentity controlled variable, forms new exploration sequenceG t 1、G t 1+G t 2、G t 1+G t 2+G t 3..., and remember and cut board number accordingly, cut
Seat in the plane puts, excise electromotor general power and take to cut machine peace control measure after the angle stability nargin of system each weak steady pattern,
If thetIndividual weak steady pattern is cut a certain electromotor in machine control direction and is positioned at simultaneouslykMachine of the cutting sequence of individual weak steady pattern,
And control strategy memory display coincidence electromotor excises, then skip this electromotor.
Step 2-5: as system dominate experience again after Failure Model changes sound out for J time after system dominate Failure Model and do not have
Have and change again that (the minimum weak steady pattern of system angle stability nargin is still thetIndividual) andη min More than or equal to 0, terminate
Emergency control policy is searched for, after system is dominated this fault incision machine total amount and the change of memory before Failure Model changes
This fault incision machine total amount of memory submits urgent decision-premaking control system to, the most in the lumpjMore than 1 by this fault incision machine
Total amountG k 1+G k 2+…+G k j-1 +G t 1+G t 2+…+G t J Submit urgent decision-premaking control system to, asjEqual to 1 by this fault
Incision machine total amountG t 1+G t 2+…+G t J Submit urgent decision-premaking control system to.
As system dominate sound out again after Failure Model changes time the minimum weak steady of system angle stability nargin
Pattern is no longertIndividual, then mean that system is dominated Failure Model and continued again to convert, then repeat in the way of step 2-4
Process, untilη min More than or equal to 0, terminate emergency control policy search.
Step 3: concentrate all faults all to process according to step 2 forecast failure, obtains adapting under typical way weak steady
The transient stability emergency control policy of Evolution Modes.The transient stability emergency control policy search efficiency of weak steady Evolution Modes takes
In the complicated and interregional tightness degree of sub area division, the method for operation, fault set, certainly easily cause the fault of weak steady patterns of change
Different load model, hvdc control mode etc. in number, region, these all can affect on-line pre-decision system emergency control policy table brush
The new time.For ensureing the calculating speed of on-line analysis decision-premaking, emergency control policy search can be by multiple stage machine Parallel Implementation.
Although the present invention is open as above with preferred embodiment, but embodiment is not for limiting the present invention's.Not
Depart from the spirit and scope of the present invention, any equivalence change 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 (4)
1. a power system transient stability emergency control method based on weak steady schematic memory, it is characterised in that include walking as follows
Rapid:
1) measure local electrical network electric parameters in real time from on-line stability control system platform, obtain electrical network typical way data, for anticipation
Fault set, theoretical to the identification of non-coherent pattern present in Critical Group after fault based on EEAC, it is thus achieved that to exchange section f={1,
2 ...., m} is the system weak steady Mode S of cut set={S1,S2,…,Sm, use EEAC to calculate each weak steady pattern lower critical group
In all equipped with cutting machine and perform the transient rotor angle stability participation factors of electromotor of substation, and by the descending shape that sorts successively
Become to cut accordingly machine control order, machine of cutting control sequence table corresponding for each weak steady pattern is shown as [G i 1, G i 2,…,G i *],
Wherein,mWeak steady pattern for existing is total,i=1~m, * represents foriPlant in system weak steady pattern Critical Group and join
Have machine of cutting and perform the total number of units of electromotor of substation；
2) a certain fault concentrated for forecast failure carries out power system transient stability time-domain-simulation, obtains with each weak steady pattern
For hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…,η m , it is assumed that
WhereinkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min =η k ；
Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, does not perform emergency control policy, otherwise, presses
Machine of the cutting control order answering Failure Model corresponding according to this fault phase is soundd out, and keeps the memory to weak steady pattern during exploration,
Untilη min More than or equal to 0, terminate emergency control policy search；
3) forecast failure is concentrated all faults all according to step 2) process, obtain adapting under typical way weak steady Evolution Modes
Transient stability emergency control policy.
Power system transient stability emergency control method based on weak steady schematic memory the most according to claim 1, its feature
It is, described step 2) comprise the following steps:
2-1) a certain fault concentrated for forecast failure carries out power system transient stability time-domain-simulation, obtains with each weak steady pattern
For hive off reflection system angle stability nargin, according to descending order be arranged in order intoη ={η 1,η 2,…,η m , it is assumed that
WhereinkThe system angle stability nargin of individual weak steady pattern is minimum, then note system angle stability nargin minimaη min =η k ；
Ifη min More than or equal to 0, then system angle stability/neutrality under this fault, does not perform emergency control policy；
If 2-2)η min Less than 0, then according to system leading thekMachine of the cutting control order superposition every time that individual weak steady pattern is corresponding
One bench teat is visited, and forms exploration sequenceG k 1、G k 1+G k 2、G k 1+G k 2+G k 3..., when often step is soundd out, record is cut board number, is cut machine
The angle stability nargin of system each weak steady pattern after machine peace control measure is cut in position, excision electromotor general power and takingη j =
{η j 1,η j 2,…,η j m , whereinη j RepresentjThe system stability nargin of secondary exploration；
If 2-3) sound out machine of cutting every time after thekThe system angle stability nargin of individual weak steady patternη j k It is still minimum, then cuts machine control
The non-initiating system of strategy processed dominates Failure Model conversion, continues by step 2-2) sound out, untilη min More than or equal to 0, terminate tight
Anxious control strategy search, now the cutting board number, cut seat in the plane and put and excise electromotor general power and be under this fault of systematic memory
Transient stability emergency control policy, will now sound out number of timesjSecondary incision machine total amountG k 1+G k 2+…+G k j Submit urgent decision-premaking to
Control system；
If 2-4)jSecondary exploration cuts system angle stability nargin is minimum after machine weak steady pattern by thekIndividual becometIt is individual,
Show that cutting machine control strategy excites other weak steady patterns of system, causes system to dominate Failure Model and changes, the most such asj
More than 1 withkIndividual weak steady patternjOn the basis of cutting machine strategy memory result for-1 time, to cut machine command deployment direction no in change
Then directly machine command deployment direction is cut in change, along thetThe direction of individual weak steady pattern increases cuts machine controlled quentity controlled variable, forms new examination
Visit sequenceG t 1、G t 1+G t 2、G t 1+G t 2+G t 3..., and remember and cut board number accordingly, cut that seat in the plane is put, to excise electromotor total
Power and taking cuts the angle stability nargin of system each weak steady pattern after machine peace control measure, if thetIndividual weak steady pattern is cut
In machine control direction, a certain electromotor is positioned at simultaneouslykMachine of the cutting sequence of individual weak steady pattern, and control strategy memory display
Coincidence electromotor excises, then skip this electromotor；
2-5) as system dominate experience again after Failure Model changes sound out for J time after system dominate Failure Model and occur the most again
Change andη min More than or equal to 0, terminate emergency control policy search, asjMore than 1 by this fault incision machine total amountG k 1+G k 2
+…+G k j-1 +G t 1+G t 2+…+G t J Submit urgent decision-premaking control system to, asjEqual to 1 by this fault incision machine total amountG t 1+G t 2+…+G t J Submit urgent decision-premaking control system to；
As system dominate sound out again after Failure Model changes time system dominate Failure Model and continue again to convert, then
Repeat step 2-4), untilη min More than or equal to 0, terminate emergency control policy search.
Power system transient stability emergency control method based on weak steady schematic memory the most according to claim 2, its feature
It is, described step 2-1) in, according to system time-domain simulation results under typical fault, all electromotors are divided into section f
For two crowds of S groups of complementation and the A group of cut set, section f sending end all electromotors composition S group, section f receiving end all electromotors composition A
Group, calculates based on EEAC method with the system angle stability nargin of system image under this pattern of hiving off that f is cut set section.
4. according to the arbitrary described power system transient stability emergency control method based on weak steady schematic memory of claim 1 ~ 3,
It is characterized in that, in described step 3), concentrate for forecast failure the emergency control policy of all faults to search for by multiple stage machine also
Row realizes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602548A (en) * | 2016-11-25 | 2017-04-26 | 国电南瑞科技股份有限公司 | EEAC (extended equal area criterion)-based transient stability critical power transmission section identification method |
| CN107732906A (en) * | 2017-10-30 | 2018-02-23 | 南京南瑞集团公司 | A kind of dynamic tracking transient state generator rotor angle weak steady pattern cuts machine control method |
| CN110994704A (en) * | 2019-12-19 | 2020-04-10 | 国电南瑞科技股份有限公司 | Transient stability prevention control aid decision-making method and device and electronic equipment |
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| CN105375464B (en) * | 2015-10-30 | 2018-06-05 | 国家电网公司 | A kind of transient safe and stable emergency control method of meter and intelligent controllable device |
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| CN107732906A (en) * | 2017-10-30 | 2018-02-23 | 南京南瑞集团公司 | A kind of dynamic tracking transient state generator rotor angle weak steady pattern cuts machine control method |
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| CN110994704A (en) * | 2019-12-19 | 2020-04-10 | 国电南瑞科技股份有限公司 | Transient stability prevention control aid decision-making method and device and electronic equipment |
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