CN104539051B - A kind of secondary equipment of intelligent converting station online evaluation system - Google Patents

A kind of secondary equipment of intelligent converting station online evaluation system Download PDF

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Publication number
CN104539051B
CN104539051B CN201410841131.2A CN201410841131A CN104539051B CN 104539051 B CN104539051 B CN 104539051B CN 201410841131 A CN201410841131 A CN 201410841131A CN 104539051 B CN104539051 B CN 104539051B
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China
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assessment
module
evaluation
subitem
value
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CN201410841131.2A
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Chinese (zh)
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CN104539051A (en
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李妍
王庭华
邹盛
胡国伟
曹卫国
李鹏
马敏杰
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国网江苏省电力公司经济技术研究院
国网江苏省电力公司
国家电网公司
南京五采智电电力科技有限公司
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Priority to CN201410841131.2A priority Critical patent/CN104539051B/en
Publication of CN104539051A publication Critical patent/CN104539051A/en
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    • Y02E60/723
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16Electric power substations

Abstract

The present invention relates to a kind of secondary equipment of intelligent converting station online evaluation system, the system includes main website level assessment aspect and power transformation station level assessment aspect, the main website level assessment aspect includes assessment main website, the power transformation station level assessment aspect includes the assessment object of some assessment substations being separately positioned in each transformer station and the multiple related secondary device corresponding to the assessment substation, by unification of three nets interchanger and communication line, assessment object described with corresponding multiple is communicatively coupled respectively for each assessment substation, to gather the assessment parameter with each assessment object, main website is communicatively coupled with some assessment substations respectively by communication network, to obtain the assessment result of each assessment substation.Its advantage is that the on-line monitoring function itself having using the monitoring system in intelligent secondary device in intelligent substation can avoid superfluous maintenance " problem, mitigate maintainer's work load, save the cost of overhaul and use, and the assessment degree of accuracy is very high.

Description

A kind of secondary equipment of intelligent converting station online evaluation system

Technical field

The present invention relates in intelligent substation technical field, more particularly to a kind of intelligent substation all secondary devices Line assessment system.

Background technology

Secondary device in intelligent substation includes relay protection, measure and control device, combining unit, intelligent terminal, monitoring system System, pair when system, interchanger, network system etc., they realize protection to primary equipment (transformer, breaker, circuit etc.), survey Amount, control and monitoring etc..Secondary device prevents accident generation and expansion from playing pass the safety and economic operation of guarantee transformer station The effect of key.From the point of view of transformer station's practical operation situation, because the accident that causes of secondary device failure or more, cause The abnormal even partial electric grid off-the-line decompression of monitoring, brings many economic losses, and very big threat is constituted to power grid security.

To ensure the reliability service of secondary device in transformer station on time, it is necessary to secondary device is overhauled.At present, power transformation The maintenance of secondary device is manually carrying out based on periodic inspection in standing.The test method of periodic inspection, real result are credible, experiment Project is complete, it can be found that problem, eliminates safe hidden trouble.But this actual conditions not according to equipment, it is simple by specify when Between the mode repaired of interval, inevitably produce " surplus maintenance ", cause equipment effectively using leeway, people Power, material resources, the waste of financial resources, or even maintenance failure can be triggered, and device breaks down and can not send out in time between overhauling twice It is existing.

With the use of a large amount of new high-quality intelligence secondary devices, in transformer station it is traditional can not on-line checking it is secondary Cable become in order to can on-line checking fiber optic network, while secondary device intelligence degree improve constantly, if again with regular Method based on inspection is tested, only can cause to repair, reduce equipment operation stabilization and reliability, while cause manpower, The waste of material resources and financial resources, therefore carry out online evaluation for the secondary device in intelligent substation and seemed very urgent.

The content of the invention

Present invention aim at for the superfluous maintenance that secondary device in intelligent substation is produced using existing maintenance mode Phenomenon, and propose a kind of secondary equipment of intelligent converting station online evaluation system and method.

To achieve the above object, the online evaluation system that the present invention is used, including main website level assessment layer and power transformation station level are commented Estimate layer, the main website grade assessment layer includes assessment main website, and the power transformation station level assessment layer is separately positioned on each change including some Assessment substation in power station and the multiple to that should assess substation are relevant to the assessment object of secondary device, and each assessment substation leads to Assessment object described with corresponding multiple is communicatively coupled respectively to cross unification of three nets interchanger and communication line, is respectively commented with gathering Estimate the assessment parameter of object, main website is communicatively coupled with some assessment substations respectively by communication network, to obtain each assessment The assessment result and relevant information of substation.

It is using an embedded computer in the transformer station, comprising logical in the computer that one preferred substation is set Letter acquisition module, assessment computing module and communication server module, communication acquisition module by the communication line respectively with institute The multiple assessment objects of correspondence are communicatively coupled, to gather the assessment parameter of the assessment object, communication acquisition module collection Assessment parameter is sent to assessment computing module and is estimated computing, and the assessment result for obtaining is sent to by communication server module to be commented Estimate main website.

Further assessment computing module includes:

Dependent evaluation parameter corresponding to the assessment state of object one is estimated the shape of calculating by setting state rule mechanism State evaluation module,

Assessed value corresponding to multiple state estimation modules of the assessment assessment subitem of object one assesses subitem rule by setting Mechanism carries out the assessment subitem module that subitem assessment is calculated,

Corresponding to the subitem score value that assessment subitem score value calculating is carried out by score value rule mechanism that subitem is assessed described in Module,

Based on object evaluation being carried out with the score values of the multiple assessment subitems corresponding to assessment object by object synthesis rule mechanism The object evaluation module of calculation.

Assessment computing module may also include data management module, comprehensive assessment module by the evaluation result of evaluation object and Each module status amount is deposited into the data management module.

The secondary device include relay protection, combining unit, measure and control device, intelligent terminal, monitoring system, pair when be System, network system and interchanger.

Above-mentioned relay protection, combining unit, measure and control device, intelligent terminal, monitoring system, pair when system and network system On be respectively equipped with IEC61850 modules, and respectively by corresponding 61850 in IEC61850 modules and the communication acquisition module Client communication is connected;Above-mentioned interchanger is provided with SNMP Manager interfaces, and the SNMP Manager interfaces are logical with described SNMP Manager subroutine modules communication connection on letter acquisition module.

Further, communication acquisition module includes 61850 clients and SNMP Manager subroutine modules and collection mould Block, multiple assessment object is corresponded to and the collection that communicates respectively by the IEC61850 modules or SNMP Manager interfaces for itself setting 61850 clients or SNMP Manager subroutine modules of module are communicatively coupled, to gather corresponding assessment object Assessment parameter, and the assessment parameter of collection is sent to assessment computing module.

The assessment parameter is all kinds of physical quantitys gathered from secondary device.

All kinds of physical quantitys include, electric current, voltage analog and open into, output digital quantity.

The main website is to be provided with the server that correspondence main website assesses operation program.

The on-line monitoring that the present invention itself has using the monitoring system in intelligent secondary device in intelligent substation Function, fetches that acquisitions is corresponding to assess parameter by the communication link of substation and correspondence secondary device, with achievable secondary device Online evaluation, thus produces following beneficial effect:

1) present invention carries out comprehensive analysis by the design feature to equipment, ruuning situation and result of the test etc., obtains right The abnormal conditions and the relation of secondary device state of parameter change and external loop should be assessed, so that it is determined that going out corresponding assessment rule Then, therefore the assessment degree of accuracy is very high, enable the system to correctly be evaluated, the abnormal dynamic of protection is caused the reason for be avoided that artificial Make situation, the safety and stability of system can be improved.

2) present invention carries out malfunction elimination according to the Strategies of Maintenance that main website is provided, and the work that can mitigate field service personnel is born Load, and considerable cost of overhaul use can be saved, reduce and waste, increase the benefit.

3) present invention can slow down or avoid the impact for bringing power supply cost to improve because society improves to power supply reliability, As " electric power law " is implemented, power supply is ensured according to the maintenance of a large amount of periodical power failures reliable, the power failure of power consumer caused by meeting Compensation for damages problem, causes the raising of power supply cost, and some of them maintenance is probably " surplus maintenance ", and the present invention can be accurately The necessity of maintenance judged, is prevented effectively from " surplus maintenance ", greatly reduces the unnecessary loss that " surplus maintenance " brings.

Brief description of the drawings

Fig. 1 is system schematic of the invention.

Fig. 2 is the schematic process flow diagram of the inventive method.

Specific embodiment

Assessment system of the present invention is set, such as Fig. 1,2 for intelligent substation, and the system includes main website level assessment layer and change Power station level assessment layer, wherein main website level assessment layer includes assessment main website, and power transformation station level assessment layer is mainly respectively provided with by some Assessment substation in each transformer station and the multiple assessment object compositions corresponding to each assessment substation, so, formation main website, Substation and the three-level system hardware architecture of assessment object.Distinguished by unification of three nets interchanger and communication line each assessment substation Be communicatively coupled with corresponding multiple assessment objects, with gather with all kinds of assessment parameters, main website by communication network respectively with Some assessment substations are communicatively coupled, to obtain the assessment result of each assessment substation.

And object is assessed for the secondary device being monitored in transformer station, the secondary device mainly has:Relay protection, merging are single Unit, measure and control device, intelligent terminal, monitoring system, pair when system, network system and interchanger and other secondary devices (for example:Therefore Barrier oscillograph, intelligent electric meter, alterating and direct current origin system etc.).Relay protection, combining unit, measure and control device, intelligent terminal, monitoring System, pair when the secondary device such as system and network system on be all respectively arranged with the IEC61850 modules of monitoring communication, and hand over The SNMP Manager ports of monitoring communication are then provided with changing planes.

Assessment substation is the computer in transformer station, and it is that the computer is embedded computer that one is preferable to provide, its Operation module can be found in Fig. 2, including communication acquisition module, assessment computing module and communication server module, communication collection mould Block is communicatively coupled with corresponding multiple assessment objects respectively by the communication line, to gather commenting for the assessment object Estimate parameter, the assessment parameter of communication acquisition module collection is sent to assessment computing module and is estimated computing, the assessment knot for obtaining Fruit is sent to assessment main website by communication server module again.

Communication acquisition module can be made up of the submodule with more careful function, and for example the communication acquisition module may include 61850 clients and SNMP Manager subroutine modules and acquisition module, it is power transformation that 61850 clients are used for assessment object IEC61850 modules in standing on monitored secondary device are communicatively coupled;And SNMP Manager subroutine modules be used for and SNMP Manager ports are communicatively coupled on interchanger, to gather the assessment parameter of corresponding assessment object, and will collection Assessment parameter assessment computing module is sent to by acquisition module.

Assessment parameter is that collection obtains class physical quantity from secondary device, such as electric current, voltage analog, open into, output out Pass amount (digital quantity) etc., various assessment parameters by acquisition module by corresponding 61850 client from secondary device Obtained in IEC61850 modules or SNMP Manager ports, and send the various assessment parameters for obtaining to assessment computing mould Block.

Same assessment computing module can be made up of according to finer evaluation function the submodule of the careful evaluation function of correspondence, Such as assessment computing module may include state estimation module, assessment subitem module, subitem value module, object evaluation module sum According to submodules such as management modules.Wherein state estimation module is respectively by the regular mechanism point of different conditions to dependent evaluation parameter The module of computing is not estimated, and assessment subitem module is that the assessed value obtained by one group of state estimation module is assessed by a subitem Regular mechanism is estimated the module of computing, and object evaluation module is directed to one group of correspondence of assessment subitem one of an assessment object Group assessed value is estimated the respective modules of computing by object evaluation rule mechanism.

For example for relay protection this assessment object in transformer station, using a group listed in table 1 totally 9 assessment Item module carries out Comprehensive Evaluation, and the assessed values corresponding to this 9 assessment subitem modules are entered by the object evaluation rule mechanism of setting Row assessment computing.The regular mechanism of assessment of relay protection this assessment object is so setting:The optimal of the assessment object is commented Valuation is 100, and the point value of evaluation of corresponding each assessment subitem is as shown in Table.

Sequence number assesses subitem Point value of evaluation 1 running environment 5 2 failure free times 15 3 familial failure free times 15 4 performance factors (RCO) 15 5 insulation status 10 6 device state informations 10 7 device process layer status informations 10 8 communication conditions 10 9 passage ruuning situations 10

It is the state estimation value produced by corresponding one group of state estimation module and the assessed value of each assessment subitem determines Determine.Such as " performance factor (RCO) " this assessment subitem therein, is from communication acquisition module in acquisition station first Relay protection this assessment object " correct operation number of times ", " the total action frequency of device ", " with the always action time of batch device Number " and " the total action frequency of same model device " several assessment parameters, then by " protection device in itself performance factor RCO1 ", " protection device same model performance factor RCO2 " and " with batch performance factor (RCO3) " three kinds of state estimation modules are obtained Corresponding states assessed value, finally by three kinds of assessed values of state estimation module and assess regular mechanism by subitem and commented Estimate the assessed value that computing obtains performance factor (RCO) this assessment subitem, and three kinds of assessment rule machines of state estimation module The assessment computing of reason is as follows respectively:

1) protection device in itself performance factor assessed value RCO1=devices correct operation number of times/total action frequency of device × 100%, correct without acting or acting in measurement period, RCO1 is equal to 1, acts incorrect or reason and fails to understand that this obtains 0 point;

2) protection device same model performance factor assessed value RCO2=devices correct operation number of times/same model device is always moved Make number of times × 100%, without action in measurement period, RCO2 is equal to 1;

3) with batch performance factor assessed value RCO3=device correct operations number of times/with the total action frequency of batch device × 100%, without action in measurement period, RCO3 is equal to 1.

And the subitem assessment of sub- performance factor (RCO) is that the assessed value of above-mentioned 3 state estimations commented by subitem Estimate the comprehensive assessment computing of regular mechanism, the regular mechanism of subitem assessment is:Performance factor RCO=(30% × RCO2+70 × %RCO3) × RCO1, finally can obtain the assessed value of performance factor (RCO) this assessment subitem.It is assumed that the positive positive motion of device Make number of times=4, total action frequency=5 of device, with total action frequency=5 of batch device, total action frequency=6 of same model device, Then computing is carried out by above-mentioned state estimation rule mechanism respectively obtain corresponding assessed value:RCO1=4/5*100%=0.8; RCO2=4/5*100%=0.8;RCO3=4/6*100%=0.67;Then assessed value RCO=(0.3*0.8+ of performance factor 0.7*0.67) * 0.8=0.5672.The performance factor of relay protection this assessment object assesses the regular mechanism of subitem score Be the Xiang Ze be assessed value with optimum state under estimate the product of score value, as:0.5672*15=8.508.

The result of object evaluation and the assessment parameter of whole are stored into data management module and are sent to assessment main website, and are somebody's turn to do Assessment main website is to be arranged at main website and be provided with the server that main website assesses operation program, and assessment main website is uploaded except reception assessment substation Whole assessment parameters and evaluation result outside, be additionally provided in line monitoring, the environment of Strategies of Maintenance and senior application and support and comment Estimate workflow management etc..

Accordingly, one of said system specific workflow is as shown in Fig. 2 communication acquisition module 2 is by thereon 61850 The assessment parameter of each assessment object of object 1 is assessed in client and the collection of SNMP Manager subroutine modules, and by collection Be respectively fed to the assessment parameter of collection in assessment computing module 3 by module, some groups of state estimation modules in assessment computing module 3 Each state evaluation module receive the assessment parameter of correspondence one of acquisition module feeding, each group of state estimation module includes shape respectively State 1, state 2 ... the n block of state of state n, each state estimation module by setting assessment rule mechanism be estimated fortune Calculate, obtain corresponding state estimation value, assessment subitem module carries out setting assessment rule to one group of assessed value of state estimation module The then assessment computing of mechanism obtains the assessed value of corresponding assessment subitem, and subitem value module carries out this to each assessment subitem Point value of evaluation calculate, calculating is the point value of evaluation in corresponding optimum state according to assessed value and the assessment subitem of assessment subitem Product obtain the online score value of each assessment subitem of correspondence, assessments of the object evaluation module to multiple assessment subitems of assessment object Score value is estimated the assessed value that computing obtains assessing object, last object evaluation module estimation pair by object evaluation rule principle The assessed value of elephant is sent to evaluation method program module, and the assessed value for assessing object is carried out synthesis, obtained by evaluation method program module The total evaluation result of assessment object, then sends evaluation result and each quantity of state into data management module 4 and is stored together, The assessment result that data management module 4 will assess object uploads to assessment main website 6 by communication server module 5, assesses main website 6 Remind maintainer that this assessment object carries out repair and maintenance etc. to relay protection 1 according to the assessment result for receiving.

The invention is not restricted to the embodiments described, and on the premise of principle of the invention method is not departed from, that is done equivalent replaces Change and belong to the application scope of the claimed protection.

Claims (8)

1. a kind of secondary equipment of intelligent converting station online evaluation system, it is characterised in that:Including main website level assessment layer and transformer station Level assessment layer, the main website level assesses layer includes assessment main website, and the power transformation station level assessment layer includes some being separately positioned on often Assessment substation in one transformer station and the multiple to that should assess substation are relevant to the assessment object of secondary device, each assessment Standing by unification of three nets interchanger and communication line, assessment object described with corresponding multiple is communicatively coupled respectively, to gather The assessment parameter of each assessment object, assessment main website is communicatively coupled with some assessment substations respectively by communication network, to obtain Take the assessment result and relevant information of each assessment substation;
The assessment substation is an embedded computer, communication acquisition module, assessment computing module is included in the computer and is led to Telecommunications services device module, communication acquisition module carries out communication link with corresponding multiple assessment objects respectively by the communication line Connect, to gather the assessment parameter of the assessment object, the assessment parameter of communication acquisition module collection is sent to assessment computing module Computing is estimated, the assessment result for obtaining is sent to assessment main website by communication server module;
The assessment computing module includes that the dependent evaluation parameter of the multiple block of state for corresponding to assessment object presses setting state Regular mechanism is estimated the state estimation module of calculating, corresponding to assessment one group of assessed value of state estimation module of object by setting Accepted opinion estimates subitem rule mechanism carries out the assessment subitem module that subitem assessment is calculated, corresponding to an assessment subitem by score value rule Mechanism carries out the subitem value module of assessment subitem score value calculating, and the score value corresponding to multiple assessment subitems of assessment object is pressed Object synthesis rule mechanism carries out the object evaluation module of object evaluation calculating, and the object evaluation result corresponding to each subitem is entered The comprehensive evaluation method program module so that the total evaluation result of object must be assessed of row;
Point value of evaluation of the assessed value of one assessment object corresponding to each assessment subitem of the assessment object is constituted, optimum evaluation value It is 100;Each block of state is estimated computing by the assessment rule mechanism of setting, obtains corresponding state estimation value, assesses The assessment computing that subitem module carries out the regular mechanism of setting assessment to the state estimation value of one group of state estimation module obtains correspondence Assessment subitem assessed value, subitem value module to it is each assessment subitem carry out the subitem point value of evaluation calculate, assessment point It is to obtain right in the product of the point value of evaluation of corresponding optimum state with the assessment subitem according to the assessed value of assessment subitem that value is calculated The online point value of evaluation of subitem should be respectively assessed, object evaluation module is pressed to the point value of evaluation of multiple assessment subitems of assessment object Object evaluation rule principle is estimated the assessed value that computing obtains assessing object, and last object evaluation module will assess object Assessed value is sent to evaluation method program module, and the assessed value for assessing object is carried out synthesis, commented by evaluation method program module Estimate the total evaluation result of object.
2. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 1, it is characterised in that:Assessment fortune Calculating module also includes data management module, and evaluation method program module is by the evaluation result of evaluation object and each module status amount It is deposited into the data management module.
3. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 2, it is characterised in that:It is described Secondary device include relay protection, combining unit, measure and control device, intelligent terminal, monitoring system, pair when system, network system and Interchanger.
4. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 3, it is characterised in that:It is described after Electric protection, combining unit, measure and control device, intelligent terminal, monitoring system, pair when system and network system on be respectively equipped with IEC61850 modules, and respectively by IEC61850 modules and corresponding 61850 client communication on the communication acquisition module Connection;The interchanger is provided with SNMP Manager interfaces, and the SNMP Manager interfaces communicate on acquisition module with described SNMP Manager subroutine modules are communicated to connect.
5. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 4, it is characterised in that:It is described logical Letter acquisition module includes 61850 clients and SNMP Manager subroutine modules and acquisition module, and multiple assessment object passes through The IEC61850 modules or SNMP Manager interfaces that itself is set correspond to respectively with 61850 clients of the acquisition module that communicates or SNMP Manager subroutine modules are communicatively coupled, and gathering the assessment parameter of corresponding assessment object, and will gather Assessment parameter is sent to assessment computing module.
6. a kind of secondary equipment of intelligent converting station online evaluation system according to claim any one of 1-5, its feature exists In:The assessment parameter is all kinds of physical quantitys gathered from secondary device.
7. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 6, it is characterised in that:It is described each Class physical quantity includes, electric current, voltage analog and open into, output digital quantity.
8. a kind of secondary equipment of intelligent converting station online evaluation system according to claim 1, it is characterised in that:Institute's commentary It is to be provided with the server that correspondence main website assesses operation program to estimate main website.
CN201410841131.2A 2014-12-30 2014-12-30 A kind of secondary equipment of intelligent converting station online evaluation system CN104539051B (en)

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