CN103605787B - Method and system for evaluating and analyzing relay protection - Google Patents
Method and system for evaluating and analyzing relay protection Download PDFInfo
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- CN103605787B CN103605787B CN201310642248.3A CN201310642248A CN103605787B CN 103605787 B CN103605787 B CN 103605787B CN 201310642248 A CN201310642248 A CN 201310642248A CN 103605787 B CN103605787 B CN 103605787B
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Abstract
The invention belongs to the technical field of intelligent power grids, and provides a method and system for evaluating and analyzing relay protection. The method comprises the steps that the movement conditions of a protection device are analyzed according to definite value data provided by a fault recorder and the relay protection device, data information is acquired and managed, and an information database is constructed; the analysis models of the relay protection device are constructed, and comprise an operating reason analysis model and a correction analysis model; searches are carried out in the information database according to the current operating state of the relay protection device, the corresponding analysis models are found, and an evaluation result is calculated. The reason for a fault can be analyzed to the maximum extent according to the operating state of the relay protection device, the relay protection device is maintained by work personnel according to the reason, the safety of electrical equipment and the stable operation of an electric system are effectively guaranteed, and the maloperation, operation refusing and other incorrect operations of the protection device are avoided.
Description
Technical field
The invention belongs to intelligent power grid technology field, more particularly, to a kind of relay protection evaluation analysis method and system.
Background technology
Currently, China or even international power grid construction, has entered intelligent grid epoch, State Grid Corporation of China three comprehensively
The more firm enforcement of intelligent grid of strategy that step is walked.The target of intelligent grid is exactly to realize the strong electrical network of unification, and relay is protected
, as the slubbing security protection of power system, status is always self-evident with effect for shield.Quick-action, selectivity, reliability and sensitivity
It is four basic demands of relay protection, and selectivity is through key factor wherein, mutually coordinated.Relay protection is from scheme
Design, to products application, all inseparable with adjusting of definite value.Relay protection setting calculation is exactly largely in selectivity
Choose with susceptiveness, especially even more so in Medial ＆ Low Voltage Power Network.So, the cooperation to the whole network relay protection acting characteristic
Analysis is most important.
With the continuous expansion of power system, large sized unit, the putting into operation successively of high voltage installation, power equipment body
System is more and more huger, and the theory structure of relay protection also becomes increasingly complex.Although the trend of relay protection development makes protection
Management work more specification, defencive function configuration more perfect, protection action behavior relatively reliable.But relay protection fills
The incorrect operation put still exists, if protection device is unable to correct operation, quickly excises fault, certainly will cause the accident expansion
Greatly, thus affecting the stable operation of power system, so the correct operation of protective relaying device is also just particularly important.
Can protective relaying device correctly play a role, and be unable to do without correctly reliable adaptive setting, complete in work of adjusting
After one-tenth, whether adjusting of protection definite value be correct, and whether sensitivity meets the needs of actual motion, verifies that existing protection philosophy is
The no requirement meeting system operation, so that protective relaying device correctly plays a role.In power transmission application at present, also do not have
There is a kind of protective relaying device online actions behavior evaluation analytical plan so that the safety of electrical equipment, the stablizing of power system
Operation cannot be protected, and the incorrect operations such as malfunction and the tripping of protection device often occurs.
Content of the invention
In view of the above problems, it is an object of the invention to provide a kind of relay protection evaluation analysis method and system, effectively
Ensure safety, the stable operation of power system of electrical equipment, it is to avoid malfunction and tripping of protection device etc. occur incorrect dynamic
Make.
On the one hand, described relay protection evaluation analysis method comprises the steps:
The value data being provided according to fault oscillograph and protective relaying device, is carried out to the action situation of protection device
Analysis, obtains and management data message, creates information data and build storehouse；
Create the analysis model of protective relaying device, described analysis model includes running analysis of causes model and correction analysis
Model；
According to the current operating conditions of protective relaying device, search described information data base, find corresponding analysis model,
And calculate evaluation result.
On the other hand, described relay protection the system of analysis and appraisal includes:
Database unit, for the value data being provided according to fault oscillograph and protective relaying device, to guarantor
The action situation of protection unit is analyzed, and obtains and manage data message, creates information data and builds storehouse；
Analysis model sets up unit, and for creating the analysis model of protective relaying device, described analysis model includes running
Analysis of causes model and correction analysis model；
Result computing unit, for the current operating conditions according to protective relaying device, searches described information data base, looks for
To corresponding analysis model, and calculate evaluation result.
The invention has the beneficial effects as follows: the present invention passes through to create information database and analysis model, is protected according to current relay
The running status of protection unit, from the corresponding quantity of state of information data library lookup and operation module, startup optimization module, from described point
Find matching condition in analysis model, then export corresponding evaluation result, described evaluation result indicates protective relaying device and goes out
The existing most probable reason of current operating conditions, staff can arrange according to evaluation result to protective relaying device correspondence proving
Make mistake it is ensured that the stable operation of the safety of electrical equipment, power system.
Brief description
Fig. 1 is the flow chart of relay protection evaluation analysis method provided in an embodiment of the present invention；
Fig. 2 is the particular flow sheet of step s1 in Fig. 1；
Fig. 3 is the particular flow sheet of step s3 in Fig. 1；
Fig. 4 is the block diagram of relay protection the system of analysis and appraisal provided in an embodiment of the present invention；
Fig. 5 is the block diagram of Database unit provided in an embodiment of the present invention；
Fig. 6 is the block diagram of result computing unit provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
In order to technical solutions according to the invention are described, to illustrate below by specific embodiment.
Fig. 1 shows the flow process of relay protection evaluation analysis method provided in an embodiment of the present invention, for convenience of description only
Show the part related to the embodiment of the present invention.
The relay protection evaluation analysis method that the present embodiment provides comprises the steps:
Step s1, the value data being provided according to fault oscillograph and protective relaying device, the action to protection device
Situation is analyzed, and obtains and manage data message, creates information data and builds storehouse；
Step s2, create protective relaying device analysis model, described analysis model include run analysis of causes model and
Correction analysis model；
Step s3, the current operating conditions according to protective relaying device, search described information data base, find corresponding point
Analysis model, and calculate evaluation result.
Value data typically uses comtrade file format to preserve, and record all includes four files, and they are respectively: head
File, configuration file, data file and message file, this four files all should have identical filename, only passes through explanation not
The extension name of same type file is distinguish between.Each of data file is sampled, and data file all comprises each passage
Sample number, markers data value.All data in data file are all integer data format.According to described value data, analyze
The various action situations of protection device, obtain and management data message, create information data and build storehouse.
Preferably, as shown in Fig. 2 described step s1 includes:
Step s11, acquisition definite value quantity of state, failure volume and protection act quantity of state；
Step s12, described definite value quantity of state, failure volume and protection are coordinated by the logic theory of protective relaying device
Operating state amount generates the operation module of links, storage above three quantity of state and operation module creation information database.
Protective relaying device action situation typically can be by definite value quantity of state, failure volume and protection act state scale
Illustrate, described definite value quantity of state by definite value inventory that all departments are provided, network connection figure and runs atlas etc. and arranges
Form is become to supply system to read；The data volume that described failure volume passes through to obtain required for each moment point obtains, described guarantor
Shield operating state amount obtains from the data interface of user input.Get definite value quantity of state, failure volume and protection act
After quantity of state, in conjunction with the logic theory of protective relaying device, generate the operation module of links, including fault type module,
Fault coverage module, protection starting module, trip protection module and reclosing module etc..
In above-mentioned steps s2, described analysis model includes running analysis of causes model and correction analysis model, analysis model
It is made up of condition and result, is stored in the form of two arrays with numbering, run analysis of causes model and mainly protected according to relay
Shield is analyzed for its operational effect under different ruuning situations, and correction analysis model mainly has multiple matching conditions
When, find most suitable evaluation result output.Result mainly comprises correct operation and incorrect operation two class, and does not just comprise
The concrete reason that positive motion is made, described incorrect operation reason includes maloperation, tuning error, bad, the device workmanship of debugging are asked
Every factors such as topic, software principle defect and external force impact.The appearance of these factors is all the analysis of logically principle
Journey and draw.The realization of the calculating of the protection module according to each link and logical topology connection forms and runs analysis of causes mould
Type, and preserve correct operation and incorrect operation reason and failsafe link.
Preferably, as shown in figure 3, described step s3 includes:
Step s31, the current operating conditions of acquisition protective relaying device；
Step s32, find from described information data base corresponding quantity of state and run module；
Step s33, scanning run analysis of causes model, the condition of match query；
Step s34, when there is matching condition, the corresponding result of output is as the evaluation result of protective relaying device.
In described step s34, the possible more than one of matching condition, then continue to scan on correction analysis model here, call
Based on the credibility computational methods of weights method, propagation coefficient calculating is carried out to Different matching condition, then select propagation coefficient
Big matching condition, and export corresponding result as the evaluation result of protective relaying device.
First the Different Results being produced by identical conditions are formed a result set con={ con1 ..., conk }, to difference
Matching condition assign a weights tk, according to weight computing propagation coefficient
Wherein, x is correction factor, and lk corresponds to numerical value, t for matching conditionklkRepresent the absolute confidence degree after the weighting of this conclusion, tkIt is to add
Weight coefficient (weights)；Represent the weighted mean of regular all Certainty Factors；Represent that the evidence revised can
Reliability weighted mean.When credibility is bigger, or when weights are bigger, propagation coefficient cf (ci-1→ci) bigger.Select
The maximum matching condition of propagation coefficient, and export corresponding result as the evaluation result of protective relaying device.
In addition, the present embodiment additionally provides a kind of relay protection the system of analysis and appraisal, as shown in Figure 4, comprising:
Database unit 41, for the value data being provided according to fault oscillograph and protective relaying device, right
The action situation of protection device is analyzed, and obtains and manage data message, creates information data and builds storehouse；
Analysis model sets up unit 42, and for creating the analysis model of protective relaying device, described analysis model includes transporting
Row analysis of causes model and correction analysis model；
Result computing unit 43, for the current operating conditions according to protective relaying device, searches described information data base,
Find corresponding analysis model, and calculate evaluation result.
Preferably, as shown in figure 5, described Database unit 41 includes:
Quantity of state acquisition module 411, for obtaining definite value quantity of state, failure volume and protection act quantity of state；
Data creation module 412, for coordinating described definite value quantity of state, fault by the logic theory of protective relaying device
Quantity of state and the operation module of protection act quantity of state generation links, storage above three quantity of state and operation module creation
Information database.
Preferably, described result computing unit 43 includes:
Running status acquisition module 431, for obtaining the current operating conditions of protective relaying device；
Data search module 432, for finding corresponding quantity of state and running module from described information data base；
Condition matching module 433, runs analysis of causes model, the condition of match query for scanning；
Result computing module 434, for when there is matching condition, output corresponds to result commenting as protective relaying device
Valency result.
Preferably, described result computing module 434 includes:
Correcting module unit, for when there is matching condition and matching condition more than one, scanning correction analysis model；
Propagation coefficient computing unit, for calling the credibility computational methods based on weights method, enters to Different matching condition
Row propagation coefficient calculates；
Result output unit, for selecting the maximum matching condition of propagation coefficient, and exports corresponding result as relay guarantor
The evaluation result of protection unit.
To sum up, the invention provides a kind of relay protection evaluation analysis method and system, can by technical solution of the present invention
To analyze, according to the running status of protective relaying device, the reason break down to the full extent, staff is according to described former
Because protective relaying device is carried out overhaul with safety, the stable operation of power system of effective guarantee electrical equipment, it is to avoid occur protecting
The incorrect operation such as the malfunction of protection unit and tripping.
It will appreciated by the skilled person that it is permissible for realizing all or part of step in above-described embodiment method
Instruct related hardware to complete by program, described program can be stored in a computer read/write memory medium
In, described storage medium, such as rom/ram, disk, CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of relay protection evaluation analysis method is it is characterised in that methods described includes:
The value data being provided according to fault oscillograph and protective relaying device, is carried out to the action situation of protection device point
Analysis, obtains and management data message, creates information data and build storehouse；
Create the analysis model of protective relaying device, described analysis model includes running analysis of causes model and correction analysis mould
Type；
According to the current operating conditions of protective relaying device, search described information data base, find corresponding analysis model, and count
Calculate evaluation result；
The described value data being provided according to fault oscillograph and protective relaying device, is carried out to the action situation of protection device
Analysis, obtains and management data message, creates information data and build storehouse step, specifically include:
Obtain definite value quantity of state, failure volume and protection act quantity of state；
Described definite value quantity of state, failure volume and the life of protection act quantity of state are coordinated by the logic theory of protective relaying device
Become the operation module of links, storage above three quantity of state and operation module creation information database.
2. method as claimed in claim 1 is it is characterised in that described operation module includes fault type module, fault coverage mould
Block, protection starting module, trip protection module and reclosing module.
3. method as claimed in claim 2, it is characterised in that the described current operating conditions according to protective relaying device, is searched
Described information data base, finds corresponding analysis model, and calculates evaluation result step, specifically includes:
Obtain the current operating conditions of protective relaying device；
Find corresponding quantity of state and run module from described information data base；
Scanning runs analysis of causes model, the condition of match query；
When there is matching condition, the corresponding result of output is as the evaluation result of protective relaying device.
4. method as claimed in claim 3 it is characterised in that described when there is matching condition, the corresponding result of output is as continuing
The evaluation result of electrical protective device, specifically includes:
When there is matching condition and matching condition more than one, scan correction analysis model；
Call the credibility computational methods based on weights method, propagation coefficient calculating is carried out to Different matching condition；
Select the maximum matching condition of propagation coefficient, and export corresponding result as the evaluation result of protective relaying device.
5. method as claimed in claim 4 is it is characterised in that the described credibility computational methods called based on weights method, to not
Carry out propagation coefficient calculation procedure with matching condition, specifically include:
Give corresponding weights tk to different matching conditions；
According to weight computing propagation coefficientWherein, x is to revise
Coefficient, lk corresponds to numerical value for matching condition.
6. a kind of relay protection the system of analysis and appraisal is it is characterised in that described system includes:
Database unit, for the value data being provided according to fault oscillograph and protective relaying device, to protection dress
The action situation put is analyzed, and obtains and manage data message, creates information data and builds storehouse；
Analysis model sets up unit, and for creating the analysis model of protective relaying device, described analysis model includes running reason
Analysis model and correction analysis model；
Result computing unit, for the current operating conditions according to protective relaying device, searches described information data base, it is right to find
The analysis model answered, and calculate evaluation result；
Described Database unit includes:
Quantity of state acquisition module, for obtaining definite value quantity of state, failure volume and protection act quantity of state；
Data creation module, for coordinating described definite value quantity of state, failure volume by the logic theory of protective relaying device
Generate the operation module of links, storage above three quantity of state and operation module creation Information Number with protection act quantity of state
According to storehouse.
7. system as claimed in claim 6 is it is characterised in that described result computing unit includes:
Running status acquisition module, for obtaining the current operating conditions of protective relaying device；
Data search module, for finding corresponding quantity of state and running module from described information data base；
Condition matching module, runs analysis of causes model, the condition of match query for scanning；
Result computing module, for when there is matching condition, the corresponding result of output is as the evaluation result of protective relaying device.
8. system as claimed in claim 7 is it is characterised in that described result computing module includes:
Correcting module unit, for when there is matching condition and matching condition more than one, scanning correction analysis model；
Propagation coefficient computing unit, for calling the credibility computational methods based on weights method, passes to Different matching condition
Broadcast coefficient to calculate；
Result output unit, for selecting the maximum matching condition of propagation coefficient, and exports corresponding result as relay protection dress
The evaluation result put.
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| CN201310642248.3A CN103605787B (en) | 2013-12-03 | 2013-12-03 | Method and system for evaluating and analyzing relay protection |
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| CN103605787B true CN103605787B (en) | 2017-01-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978178B (en) * | 2014-04-14 | 2018-04-20 | 南京南瑞继保电气有限公司 | A kind of relay protection constant value method for visualizing |
| CN104931831B (en) * | 2015-06-18 | 2016-06-08 | 广东电网有限责任公司电力调度控制中心 | Fault handling information acquisition methods and system |
| CN105071379B (en) * | 2015-07-28 | 2018-03-30 | 国家电网公司 | A kind of alternating current-direct current based on multi-source data coordinates control effect appraisal procedure and device |
| CN105353753B (en) * | 2015-12-04 | 2019-01-29 | 国网冀北电力有限公司 | Protection act behavior intelligent analysis method based on multi-source recorded wave file |
| CN109919338A (en) * | 2019-03-22 | 2019-06-21 | 国网上海市电力公司 | The safety Analysis method of relay protection device |
| CN113420409B (en) * | 2021-05-17 | 2022-12-20 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
| CN113341313B (en) * | 2021-06-18 | 2024-04-30 | 中铁第一勘察设计院集团有限公司 | Method for judging quality of protection action behavior |
| CN113933707B (en) * | 2021-10-12 | 2023-09-19 | 哈尔滨电机厂有限责任公司 | Self-adjusting method for judging reliability of fault cause of generator set |
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| EP0378786A2 (en) * | 1989-01-18 | 1990-07-25 | Mitsubishi Denki Kabushiki Kaisha | Differential protective relay apparatus |
| CN101714780A (en) * | 2008-10-07 | 2010-05-26 | 上海思南电力通信有限公司 | Relay protection running management information system |
| CN102916407A (en) * | 2012-08-23 | 2013-02-06 | 山西省电力公司大同供电分公司 | Relay protection and fault information management system for regional power grid |
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