CN104935079A - Station-domain protection system of intelligent transformer station and function debugging method of system - Google Patents

Station-domain protection system of intelligent transformer station and function debugging method of system Download PDF

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Publication number
CN104935079A
CN104935079A CN201510306264.4A CN201510306264A CN104935079A CN 104935079 A CN104935079 A CN 104935079A CN 201510306264 A CN201510306264 A CN 201510306264A CN 104935079 A CN104935079 A CN 104935079A
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China
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protective
territory
protection
station
debugging
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CN201510306264.4A
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Chinese (zh)
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王进虎
杨舜禹
吕宾宾
杨威
杨悦
刘钺
付宏伟
张亮
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天津送变电工程公司
国家电网公司
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Priority to CN201510306264.4A priority Critical patent/CN104935079A/en
Publication of CN104935079A publication Critical patent/CN104935079A/en

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    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S10/20Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

Abstract

The invention relates to a station-domain protection system of an intelligent transformer station and a function debugging method of the system. A station-domain protector is mounted between an integrated application server and monitor host and a central switch of a process layer, the station-domain protector is networked with the integrated application server and monitor host via MMS messages, and the integrated application server and monitor host is networked with the central switch of the process layer via GOOSE and SV messages. The debugging technology as well as single debugging, network debugging and group transmission methods of station-domain protection of the new generation of intelligent transformer station are included, the workload of equipment maintenance is reduced, wire arrangement is greatly reduced, wiring is simple and convenient, the installation efficiency is effectively improved, the whole construction period is shortened, and the operation stability of the system is improved.

Description

A kind of intelligent substation station territory protection system and function debugging method

Technical field

The invention belongs to intelligent substation field, relate to the adjustment method of New Generation of Intelligent substation areas of transformer station protective device and function, key technology debugging main points, especially a kind of intelligent substation station territory protection system and function debugging method.

Background technology

Stand territory protection as the new things of New Generation of Intelligent transformer station, performs the main protection within the scope of transformer station and backup protection function, and to be responsible for these middle measurement results to upper strata wide area protection unit transmission, accept and perform the result of decision of wide area protection.Territory protection of standing as substation access Wide area protection system, not only can protect the power equipment at full station, can also and the safety of Wide area protection system mating protection regional power grid.The backup protection that territory, the station protection of New Generation of Intelligent transformer station is protected as full station owner is very important; multiple protection is highly integrated in a table apparatus very complicated again; based on importance and the complexity of the protection of territory, station, the monomer of territory protection of standing is debugged, networking is debugged and the correctness of whole group of transmission is very important.

But current intelligent substation is scarcely out of swaddling-clothes in China, although State Grid Corporation of China proposes the debugging specification of relevant intelligent substation, be also substantially in the blank stage about territory, the station protective device of New Generation of Intelligent transformer station and function debugging method.Through the literature search to " intelligent substation * station territory protection * debugging " keyword; the technology relevant to this patent mainly contains following several respects; but wherein do not relate to concrete grammar and the key technology main points of station territory protective device and function debugging, carrying out of concrete debugging efforts cannot be instructed.

The document of public technology of preliminary search analogous technical fields:

A kind of intelligent and conventional substation optical-fiber longitudinal difference protection passage united test method (CN102721882A), it is characterized in that: described intellectuality and conventional substation optical-fiber longitudinal difference protection passage united test method, according to mode during synchronous pair of Intelligent transformer station protection employing light IRIG-B code, mode during conventional substation employing GPS couple, completes Multipoint synchronous collection, triggers test; During test, both sides relay-protection tester accesses gps clock, IRIG-B code clock respectively, with the frequency of 1 time per second send comprise day, time, minute, second etc. temporal information.Advantage of the present invention: mode during synchronous pair of Intelligent transformer station protection employing light IRIG-B code; mode during conventional substation employing GPS couple; utilize above-mentioned two kinds of clocks to complete and protect synchronized sampling and trigger the synchronized sampling of both sides tester; complete Multipoint synchronous collection, trigger test; realize the test to double ended fiber Current Differential Protection; test method is easy, and data are accurate.

A kind of territory, station protecting control device (CN102856981B) in transformer station with protection and controlling functions.The defencive function of described device comprises route protection, tranformer protection, bus protection; Controlling functions comprises: prepared auto restart function and UFLS function.The protection of described device and controlling functions are realized by some independently feature cards, and different plug-in units completes different functions.Data information sharing is realized by inner 100M Ethernet between difference in functionality plug-in unit.When bus differential protecting or transform er backup protection action, automatic blocking prepared auto restart function; During the action of defencive function plug-in unit, automatic blocking UFLS function.The present invention is compared with traditional protective device; this device realizes the function of the free-standing protecting control device of former more than ten cover in transformer station by set of device; substantially reduce the number the cost of protecting control device, improve the cooperation ability between protection and control function.

A kind of territory, intelligent substation station protective debugging method (CN104375501A), concrete debugging step is: (1) territory protection monomer unit of stand is debugged; (2) territory protection subsystem of standing debugging, comprises 1. communications network system debugging, comprises the test of communication network physical link, VLAN division and isolation test and network synthesis performance test; 2. clock system debugging; 3. whole group of transmission test is protected in territory, station, comprises sampled value test, protects whole group of transmission and whole group of transmission debugging; 4. supervisory control system debugging.The present invention, in conjunction with the commissioning experience of High-tech Park, Tianjin 110kV New Generation of Intelligent transformer station Practical Project, summarizes territory, station protective debugging overall flow, analyzes the adjustment method that relevant key technical problem draws, have very strong operability and practicality.

Through contrast, the difference compared with present patent application technical scheme required for protection of published prior art is comparatively large, its technical problem solved not identical.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art part, a kind of scientific and reasonable, practical, reliable and stable intelligent substation station territory protection system and function debugging method are provided.

The present invention solves its technical problem and takes following technical scheme to realize:

A kind of territory, intelligent substation station protection system, comprise integrated application server and monitoring host computer, to stand territory protective device, process layer center switch, 110kV circuit closes intelligence one and protective device, main transformer closes intelligence one and protective device, 10kV circuit closes intelligence one and protective device, integrated application server and monitoring host computer are connected by netting twine with process layer center switch, process layer center switch connects 110kV circuit respectively by netting twine and closes intelligence one and protective device, main transformer closes intelligence one and protective device and 10kV circuit and closes intelligence one and protective device, and process layer center switch and 110kV circuit close intelligence one and protective device, main transformer closes intelligence one and protective device and 10kV circuit and closes intelligence one and protective device respectively by the networking of GOOSE and SV message, it is characterized in that being: at integrated application server and be provided with territory, a station protective device between monitoring host computer and process layer center switch, by the networking of MMS message between this territory, station protective device and integrated application server and monitoring host computer, stand between territory protective device and process layer center switch by the networking of GOOSE and SV message.

And; territory, described station control protective unit by entirely stand prepared auto restart, circuit standby, the low standby of main transformer, failure protection and simple and easy mother difference etc. defencive function in one; as the protection of 110kV circuit list cover redundancy protecting, realize entirely standing the emergency control such as prepared auto restart, low-frequency low-voltage load shedding function, optimize the simple and easy bus protection function of main transformer low-pressure side backup protection functional realiey 10kV simultaneously.

And, have employed SV, GOOSE, MMS unification of three nets mode between device.

An adjustment method for territory, intelligent substation station protection system, is characterized in that: specific as follows:

(1) territory protective device of standing is debugged: before system debug, carry out protective device monomer debugging efforts, to verify the function of monomer protective device, monomer unit mainly protects relevant merging intelligent cell to territory, station, stand territory protective device, fault wave recording device, network analyzer;

(2) territory protection subsystem of standing debugging: debug on qualified basis in step territory, station protective device monomer (1), carry out subsystem networking and complete the whole group of test job protected in territory, station;

Subsystem is debugged the equipment related to and is comprised territory, station protective device, merges intelligent cell, mimic-disconnecting switch etc., the main purpose of subsystem debugging to detect between intelligent secondary device Signal transmissions by fault simulation correctly whether whether complete, soft/hard pressing plate is effective, and final purpose checks the correctness of SCD configuration file and the reliability of intelligent secondary device device;

The method of subsystem debugging adopts the method for testing of the single flow direction of device signal, only verifies that it outputs signal and associated platen for single device;

(3) supervisory control system debugging: to monitor centered by backstage, checks following functions by monitoring host computer, data network shutdown and integrated application server: whether the drafting of monitored picture meets service requirement; Correctly can reflect the remote measurement value at each interval; When have remote signals is sent time, whether alarm window is quoted, and whether alarm window has display; The switch tool of remote control straighforward operation can be carried out to each interval; A distant place is thrown and is moved back soft pressing plate, a distant place switches definite value district, definite value is revised in a distant place and whether distant place involution is effective; Whether correct during SNTP couple; Whether synchronization function is correct, effective; Integrated application server whether can correctly record trouble oscillograph recorded wave file and listed files, on the protective device state warning information that send.

And (1) the stand work of territory protective device debugging of step comprises following content:

The projects such as 1. visual examination, working power, insulation property meet the demands;

2. self-check of device function is normal, comprises self-check of device information, device abnormal signal and power supply disappearance of signal;

3. sampled value amplitude and angle meet regulatory requirements;

4. the test of SV, GOOSE empty terminal is correct;

5. fixed value adjusting function is correct, and definite value error meets the requirements, and protection regular logical function is normal, and trip protection matrix is correct, checks soft or hard pressing plate uniqueness and correctness;

6. device receive clock synchronizing signal is normal, pair time trueness error should be not more than ± 1ms;

7. failure wave-recording and event recording function inspection.

And, step (2) stand territory protection subsystem debugging comprise following debugging:

1. communications network system debugging, adopts MMS, GOOSE, SV unification of three nets transmission means in our station, by using the tool detection such as network analyzer, PC debug process layer switch, station level switch in the debugging of this stage;

2. clock system debugging, intelligent substation is strict to requirement during unified pair of clock, and unified precise time ensures safe operation of power system, improves important measures of operation level.This stage mainly to the synchronizing function of clock source, active-standby switch, punctual function and punctual precision, by by time device synchronization situation test and debug, to meet system cloud gray model needs.

3. whole group of transmission test is protected in territory, station, and in SV, GOOSE whole group of test process, two work are carried out simultaneously below:

A sampled value is tested, and our station high-pressure side adopts the configuration of electronic mutual inductor, collector and merging intelligent cell, and low-pressure side adopts routine transformer, merges intelligent cell configuration; High-pressure side SV sampled value sends and the collector of digital relay protection tester can be used to export analog functuion, merges the sampled value of intelligent cell input FT3 form; Low-pressure side adopts conventional relay-protection tester, merges intelligent cell pass into analog sampling value from low-pressure side; Verify that whether the empty terminal line of each side SV is correct, whether amplitude and the phase accuracy of checking territory, station protective device analog quantity be qualified;

B protects whole group of transmission, carries out transmission test one by one, checking defencive function according to the definite value of adjusting of each protection module in the territory protective device of station; By simulation typical fault, check following functions: protect whether correct operation; Merge intelligent cell control box whether correct operation; Whether failure wave-recording correctly records ripple; Whether monitoring backstage correctly shows protection act information; Whether the connection locking information between different protection is correct; Whether the maintenance pressing plate state of merging intelligent cell, protective device is corresponding.

And, step 1. communications network system debugging, particular content comprises:

A communication network physical link is tested, check that merging intelligent cell is correct to the SV/GOOSE optical fiber link connection of stand territory protective device therefore record network analyzer integrated apparatus, monitoring backstage, digital relay protection tester, disconnect and merge intelligent cell working power or its optical fiber, should be there is corresponding SV/GOOSE chain rupture alarm in check protection device, the correct and device SV/GOOSE of checking optical fiber link receives and dispatches alarm correlation function;

B VLAN divides and isolation test, carry out dividing based on the VLAN of port to whole network, identical VLAN and different inter-vlan communication situation will be checked in test process, verify its isolation features, thus ensure communication network at electrical network under normal and failure condition each meshed network communication reliability, each node data packet loss, network transfer delay should meet code requirement;

The performance test of c network synthesis, this stage utilizes network analyzer to complete the dependence test work of bandwidth to communication network, real-time, reliability, network storm, message priority qos feature.

Advantage of the present invention and good effect are:

1, the present invention comprises New Generation of Intelligent substation areas of transformer station protective debugging technology and the method for the stand debugging of territory protection monomer, networking debugging, whole group of transmission; decrease the plant maintenance work of operations staff; substantially reduce the number the arrangement of cable simultaneously; and wiring is simple and convenient; effectively improve installation effectiveness; shorten whole construction period, raising efficiency, elevator system operation stability.

3, present invention employs SV, GOOSE, MMS unification of three nets mode, therefore in SV, GOOSE whole group of test process, two work can be carried out simultaneously, to simplify workflow, increase work efficiency, and shorten debugging cycle.

2, in implementing at 110kV substation project, this technology is adopted; duration has saved 8 work days; the more important thing is that this technology substantially increases territory, station protection stability and reliability, in main protection fault tripping situation, substitute main protection excision fault, ensure that the stable operation of electric power system.At present, this achievement in research is used for the debugging efforts of High-tech Park 110kV substation areas of transformer station protection, and commissioning staff satisfactorily completes debugging task according to this technology.

Accompanying drawing explanation

Fig. 1 is territory, station protection system sketch;

Fig. 2 is territory, station protection subsystem debugging plan sketch.

Embodiment

Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.

A kind of intelligent substation station territory protection system and function debugging method

Territory protective device (substation area protec-tion) of standing refers to and to be arranged in one's respective area in each relevant intelligent substation; perform the main protection within the scope of transformer station and backup protection function; and to be responsible for these middle measurement results, to upper strata wide area protection unit transmission, accepting and performing the device of the result of decision of wide area protection.That is, territory protective device of standing namely can as substation access Wide area protection system, the power equipment at the full station of protection, also can with the safety of Wide area protection system mating protection regional power grid.

The present embodiment, High-tech Park, Tianjin 110kV New Generation of Intelligent transformer station have employed stratification Protection control system, multifunctional measurement and control device, this territory, intelligent substation station protection system sketch as shown in Figure 1,

Integrated application server and monitoring host computer, territory protective device of standing, process layer center switch, 110kV circuit close intelligence one and protective device, main transformer conjunction intelligence one and protective device, 10kV circuit conjunction intelligence one and protective device,

Integrated application server and monitoring host computer are connected by netting twine with process layer center switch, process layer center switch connects respectively by netting twine that 110kV circuit closes intelligence one and protective device, main transformer closes intelligence one and protective device and 10kV circuit and closes intelligence one and protective device, and process layer center switch and 110kV circuit close intelligence one and protective device, main transformer close intelligence integrally and protective device and 10kV circuit close intelligence integrally and protective device respectively by the networking of GOOSE and SV message;

The innovative point of native system is:

At integrated application server and be provided with territory, a station protective device between monitoring host computer and process layer center switch, by the networking of MMS message between this territory, station protective device and integrated application server and monitoring host computer, stand between territory protective device and process layer center switch and pass through the networking of GOOSE and SV message;

In the present embodiment, 110kV circuit adopts protection observing and controlling and non-energy metering integrating device, adopts merge cells Intelligent terminal integration device; 10kV circuit adopts the All-in-One device of collection wall, each function device of process layer; Full station MMS, GOOSE and SV message common networking.

Compared with same scale normal procedure intelligent transformer station; our station have employed electronic mutual inductor, miniaturized switch cabinet equipment; outside the independent protection device of full station; add territory, a set of station control protective unit; this territory, station protective device by entirely stand prepared auto restart, circuit standby, the low standby of main transformer, failure protection and simple and easy mother difference etc. defencive function in one; as the protection of 110kV circuit list cover redundancy protecting, realize entirely standing the emergency control such as prepared auto restart, low-frequency low-voltage load shedding function, optimize the simple and easy bus protection function of main transformer low-pressure side backup protection functional realiey 10kV simultaneously.In addition, stand territory protected data collection, tripping operation outlet all adopt networking mode.

Compared with traditional protective device; this protection realizes the function of the free-standing protective device of former more than ten cover by set of device; substantially reduce the number the cost of relaying configuration; decrease the plant maintenance work of operations staff; substantially reduce the number the arrangement of cable simultaneously; and wiring is simple and convenient, effectively improve installation effectiveness, shorten whole construction period.

The adjustment method of territory, intelligent substation station protection system, specific as follows:

(1) territory protective device of standing is debugged: must carry out protective device monomer debugging efforts before system debug; to verify the function of monomer protective device; monomer unit mainly protects relevant merging intelligent cell to territory, station, stand territory protective device, fault wave recording device, network analyzer, mainly comprises following content to its debugging efforts:

The projects such as 1. visual examination, working power, insulation property meet the demands;

2. self-check of device function is normal, as: self-check of device information, device abnormal signal, power supply disappearance of signal etc.;

3. sampled value amplitude and angle meet regulatory requirements;

4. the test of SV, GOOSE empty terminal is correct;

5. fixed value adjusting function is correct, and definite value error meets the requirements, and protection regular logical function is normal, and trip protection matrix is correct, checks soft or hard pressing plate uniqueness and correctness;

6. device receive clock synchronizing signal is normal, pair time trueness error should be not more than ± 1ms;

7. failure wave-recording and event recording function inspection.

Above basis to be paid special attention to the work on two sides: be that the parameter testings such as SV, GOOSE optical fiber power meet the demands on the one hand; The test of protection newly-increased logic function is normal on the other hand, such as: SV, GOOSE inspecting state is on the impact of relay protective scheme, and the abnormal impacts on relay protective scheme such as invalid, the two AD of SV is inconsistent, SV, GOOSE communication abnormality is on the impact of relay protective scheme.

(2) territory protection subsystem of standing debugging: this territory, station, station protection subsystem debugging plan sketch as shown in Figure 2;

Debug on qualified basis in step territory, station protective device monomer (1), carry out subsystem networking and complete the whole group of test job protected in territory, station;

Subsystem is debugged the equipment related to and is comprised station territory protective device, merges intelligent cell, mimic-disconnecting switch etc., and the main purpose of subsystem debugging detects Signal transmissions between intelligent secondary device by fault simulation correctly whether whether complete, soft/hard pressing plate is effective.Final purpose checks the correctness of SCD configuration file and the reliability of intelligent secondary device device.Subsystem debugging is verify design drawing on the one hand, on the other hand, is also test construction quality and equipment quality.Whether subsystem debugging is true and reliable, plays a part very crucial for the realization of this defencive function and the reliability service of electrical network.

Because signal transmission mutual between device is more, for making debugging efforts clear thinking understand, the method for subsystem debugging adopts the method for testing of the single flow direction of device signal, namely only verifies that it outputs signal and associated platen for single device.

1. communications network system debugging

In our station, adopt MMS, GOOSE, SV unification of three nets transmission means, its advantage to reduce optic fiber configureing of entirely standing, cost-saving, and whole network is simplified more.Territory protection system of standing adopts " net is adopted net and jumped " mode, and therefore communication network is most important to territory, station defencive function, is the part paid particular attention in debug process.Mainly through using the tool detection such as network analyzer, PC debug process layer switch, station level switch in the debugging of this stage.

A communication network physical link is tested

Check that merging intelligent cell is correct to the SV/GOOSE optical fiber link connection of stand territory protective device therefore record network analyzer integrated apparatus, monitoring backstage, digital relay protection tester; disconnect and merge intelligent cell working power or its optical fiber; should be there is corresponding SV/GOOSE chain rupture alarm in check protection device, to verify that the correct of optical fiber link and device SV/GOOSE receive and dispatch alarm correlation function.

B VLAN divides and isolation (fail safe) test

Along with the continuous increase of smart machine, the data message amount at full station increases severely, the contention conflict that Ethernet own structural characteristics causes, and the increase along with number of users causes communicating " slack-off ".The Web broadcast mechanism that the character of ICP/IP protocol determines simultaneously creates the useless network flow that a large amount of destination address is broadcast address, therefore carries out dividing based on the VLAN of port to whole network.Identical VLAN and different inter-vlan communication situation to be checked in test process, verify its isolation features.Thus ensure communication network at electrical network under normal and failure condition each meshed network communication reliability, each node data packet loss, network transfer delay should meet code requirement

The performance test of c network synthesis

This stage mainly utilizes the equipment such as network analyzer, complete the dependence test work such as the bandwidth (throughput) to communication network, real-time (propagation delay time), reliability (frame loss rate), network storm, message priority qos feature, ensure communications network security, reliably working.

2. clock system debugging

Intelligent substation is strict to requirement during unified pair of clock, and unified precise time ensures safe operation of power system, improves important measures of operation level.This stage mainly to the synchronizing function of clock source, active-standby switch, punctual function and punctual precision, by by time device synchronization situation test and debug, to meet system cloud gray model needs.

3. whole group of transmission test is protected in territory, station

Owing to have employed SV, GOOSE, MMS unification of three nets mode, therefore in SV, GOOSE whole group of test process, two work can be carried out simultaneously, to simplify workflow, increase work efficiency, and shorten debugging cycle.

A sampled value is tested

Our station high-pressure side adopts the configuration of electronic mutual inductor, collector and merging intelligent cell, low-pressure side adopts routine transformer, merges intelligent cell configuration, therefore SV sampled value in high-pressure side sends and the collector of digital relay protection tester can be used to export analog functuion, from the sampled value merging intelligent cell input FT3 form; Low-pressure side adopts conventional relay-protection tester, merges intelligent cell pass into analog sampling value from low-pressure side.Verify that whether the empty terminal line of each side SV is correct, whether amplitude and the phase accuracy of checking territory, station protective device analog quantity be qualified.

B protects whole group of transmission

To adjust definite value according to each protection module in the territory protective device of station, carry out transmission test one by one, checking defencive function.By simulating all kinds of typical fault, check following functions: protect whether correct operation; Merge intelligent cell control box whether correct operation; Whether failure wave-recording correctly records ripple; Whether monitoring backstage correctly shows protection act information; Whether the connection locking information between different protection is correct; Whether the maintenance pressing plate state of merging intelligent cell, protective device is corresponding.If field condition possesses, directly can carry out protection transmission by belt switch, investigate scope more comprehensive.

The problem will paid special attention in whole group of transmission debugging is as follows:

The invalid impact on relay protective scheme in sampled value quality position

The accumulated quantity of sampled value quality position invalidated identification at the appointed time in scope or frequency exceed protection allowed band; relevant defencive function answers instantaneous reliable locking; should normally drop into the defencive function that this exception is irrelevant, sampled value is recovered normally, and the defencive function be blocked should opening in time.Digital relay protection tester can be used during test to be set to the quality position of partial data passage in sampled value by different frequencies invalid, there is the situation that quality position is invalid in the sampled value that hypothetical mergers unit sends.

The impact of sampled value distortion on relay protective scheme

Double A/D transducer is generally had, to increase the reliability of protective device in the protection of territory, station and other protective devices.Require in double A/D sampled data in relay protective scheme, when wherein distortion appears in a road sample values, relevant defencive function answers locking.

Use the partial data of a wherein road sampled value in digital relay protection tester simulation double A/D to distort during test, and its quality position is effective, simulation distortion numerical value reduces or is increased to be greater than protection definite value respectively, checking protective device functional realiey situation.

The test of protective relaying device maintenance mechanism

The test of protective relaying device maintenance mechanism mainly comprises:

A, protective device GOOSE and MMS message maintenance quality correctly should be able to reflect that the throwing of protective device maintenance pressing plate is moved back.

B, only when maintenance quality and this turnaround of unit state consistency of the SV message received, SV message is participation protective logic, the defencive function otherwise locking is correlated with.

C, only when the GOOSE message maintenance quality received and this turnaround of unit state consistency, GOOSE message just participates in this device logic, otherwise also locking is correlated with defencive function.

Mainly following methods is used in test process:

A, controlling the maintenance quality of itself GOOSE and MMS message by throwing surrender protection unit maintenance pressing plate, determining the correctness of overhauling quality by message analysis instrument.

Debugging plan before b, use carries out the test of SV, GOOSE maintenance mechanism; permutation and combination analysis is carried out to all secondary devices associated therewith; move back state by the various throwing of combination maintenance pressing plate, and verify the correctness of protective device, merging intelligent cell maintenance cooperation mechanism.

(3) supervisory control system debugging

To monitor centered by backstage, check following functions by monitoring host computer, the data network shutdown of Ith district and integrated application server: whether the drafting of monitored picture meets service requirement; Correctly can reflect the remote measurement value at each interval; When have remote signals is sent time, whether alarm window is quoted, and whether alarm window has display; The switch tool of remote control straighforward operation can be carried out to each interval; A distant place is thrown and is moved back soft pressing plate, a distant place switches definite value district, definite value is revised in a distant place and whether distant place involution is effective; Whether correct during SNTP couple; Whether synchronization function is correct, effective.Integrated application server whether can correctly record trouble oscillograph recorded wave file and listed files, on the protective device state warning information that send.

Protective device definite value district handoff functionality to be paid special attention in above debug process, protective device definite value distant place modify feature, a distant place throw and move back the test job of soft pressing plate function.

Along with the development of New Generation of Intelligent transformer station; standing territory defencive function can progressively application popularization; and current most of professional commissioning staff understands less more without related commissioning experience to territory, station protection concept and adjustment method; this patent is according to practical engineering experience; research summarizes the overall flow of New Generation of Intelligent substation areas of transformer station protective debugging work; analyze key issue in each subsystem debug process; and propose relevant debugging suggestion, for commissioning staff provides certain thinking and experience to the work of New Generation of Intelligent substation areas of transformer station protective debugging from now on.

Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.

Claims (7)

1. territory, intelligent substation station protection system, comprise integrated application server and monitoring host computer, to stand territory protective device, process layer center switch, 110kV circuit closes intelligence one and protective device, main transformer closes intelligence one and protective device, 10kV circuit closes intelligence one and protective device, integrated application server and monitoring host computer are connected by netting twine with process layer center switch, process layer center switch connects 110kV circuit respectively by netting twine and closes intelligence one and protective device, main transformer closes intelligence one and protective device and 10kV circuit and closes intelligence one and protective device, and process layer center switch and 110kV circuit close intelligence one and protective device, main transformer closes intelligence one and protective device and 10kV circuit and closes intelligence one and protective device respectively by the networking of GOOSE and SV message, it is characterized in that being: at integrated application server and be provided with territory, a station protective device between monitoring host computer and process layer center switch, by the networking of MMS message between this territory, station protective device and integrated application server and monitoring host computer, stand between territory protective device and process layer center switch by the networking of GOOSE and SV message.
2. territory, intelligent substation station according to claim 1 protection system; it is characterized in that: territory, described station control protective unit by entirely stand prepared auto restart, circuit standby, the low standby of main transformer, failure protection and simple and easy mother difference etc. defencive function in one; as the protection of 110kV circuit list cover redundancy protecting, realize entirely standing the emergency control such as prepared auto restart, low-frequency low-voltage load shedding function, optimize the simple and easy bus protection function of main transformer low-pressure side backup protection functional realiey 10kV simultaneously.
3. territory, intelligent substation station according to claim 1 protection system, is characterized in that: have employed SV, GOOSE, MMS unification of three nets mode between device.
4. an adjustment method for territory, intelligent substation station protection system, is characterized in that: specific as follows:
(1) territory protective device of standing is debugged: before system debug, carry out protective device monomer debugging efforts, to verify the function of monomer protective device, monomer unit mainly protects relevant merging intelligent cell to territory, station, stand territory protective device, fault wave recording device, network analyzer;
(2) territory protection subsystem of standing debugging: debug on qualified basis in step territory, station protective device monomer (1), carry out subsystem networking and complete the whole group of test job protected in territory, station;
Subsystem is debugged the equipment related to and is comprised territory, station protective device, merges intelligent cell, mimic-disconnecting switch etc., the main purpose of subsystem debugging to detect between intelligent secondary device Signal transmissions by fault simulation correctly whether whether complete, soft/hard pressing plate is effective, and final purpose checks the correctness of SCD configuration file and the reliability of intelligent secondary device device;
The method of subsystem debugging adopts the method for testing of the single flow direction of device signal, only verifies that it outputs signal and associated platen for single device;
(3) supervisory control system debugging: to monitor centered by backstage, checks following functions by monitoring host computer, data network shutdown and integrated application server: whether the drafting of monitored picture meets service requirement; Correctly can reflect the remote measurement value at each interval; When have remote signals is sent time, whether alarm window is quoted, and whether alarm window has display; The switch tool of remote control straighforward operation can be carried out to each interval; A distant place is thrown and is moved back soft pressing plate, a distant place switches definite value district, definite value is revised in a distant place and whether distant place involution is effective; Whether correct during SNTP couple; Whether synchronization function is correct, effective; Integrated application server whether can correctly record trouble oscillograph recorded wave file and listed files, on the protective device state warning information that send.
5. the adjustment method of territory, intelligent substation station according to claim 4 protection system, is characterized in that: (1) the stand work of territory protective device debugging of step comprises following content:
The projects such as 1. visual examination, working power, insulation property meet the demands;
2. self-check of device function is normal, comprises self-check of device information, device abnormal signal and power supply disappearance of signal;
3. sampled value amplitude and angle meet regulatory requirements;
4. the test of SV, GOOSE empty terminal is correct;
5. fixed value adjusting function is correct, and definite value error meets the requirements, and protection regular logical function is normal, and trip protection matrix is correct, checks soft or hard pressing plate uniqueness and correctness;
6. device receive clock synchronizing signal is normal, pair time trueness error should be not more than ± 1ms;
7. failure wave-recording and event recording function inspection.
6. the adjustment method of territory, intelligent substation station according to claim 4 protection system, is characterized in that: step (2) stand territory protection subsystem debugging comprise following debugging:
1. communications network system debugging, adopts MMS, GOOSE, SV unification of three nets transmission means in our station, by using the tool detection such as network analyzer, PC debug process layer switch, station level switch in the debugging of this stage;
2. clock system debugging, intelligent substation is strict to requirement during unified pair of clock, and unified precise time ensures safe operation of power system, improves important measures of operation level.This stage mainly to the synchronizing function of clock source, active-standby switch, punctual function and punctual precision, by by time device synchronization situation test and debug, to meet system cloud gray model needs.
3. whole group of transmission test is protected in territory, station, and in SV, GOOSE whole group of test process, two work are carried out simultaneously below:
A sampled value is tested, and our station high-pressure side adopts the configuration of electronic mutual inductor, collector and merging intelligent cell, and low-pressure side adopts routine transformer, merges intelligent cell configuration; High-pressure side SV sampled value sends and the collector of digital relay protection tester can be used to export analog functuion, merges the sampled value of intelligent cell input FT3 form; Low-pressure side adopts conventional relay-protection tester, merges intelligent cell pass into analog sampling value from low-pressure side; Verify that whether the empty terminal line of each side SV is correct, whether amplitude and the phase accuracy of checking territory, station protective device analog quantity be qualified;
B protects whole group of transmission, carries out transmission test one by one, checking defencive function according to the definite value of adjusting of each protection module in the territory protective device of station; By simulation typical fault, check following functions: protect whether correct operation; Merge intelligent cell control box whether correct operation; Whether failure wave-recording correctly records ripple; Whether monitoring backstage correctly shows protection act information; Whether the connection locking information between different protection is correct; Whether the maintenance pressing plate state of merging intelligent cell, protective device is corresponding.
7. the adjustment method of territory, intelligent substation station according to claim 6 protection system, is characterized in that: step 1. communications network system debugging, and particular content comprises:
A communication network physical link is tested, check that merging intelligent cell is correct to the SV/GOOSE optical fiber link connection of stand territory protective device therefore record network analyzer integrated apparatus, monitoring backstage, digital relay protection tester, disconnect and merge intelligent cell working power or its optical fiber, should be there is corresponding SV/GOOSE chain rupture alarm in check protection device, the correct and device SV/GOOSE of checking optical fiber link receives and dispatches alarm correlation function;
B VLAN divides and isolation test, carry out dividing based on the VLAN of port to whole network, identical VLAN and different inter-vlan communication situation will be checked in test process, verify its isolation features, thus ensure communication network at electrical network under normal and failure condition each meshed network communication reliability, each node data packet loss, network transfer delay should meet code requirement;
The performance test of c network synthesis, this stage utilizes network analyzer to complete the dependence test work of bandwidth to communication network, real-time, reliability, network storm, message priority qos feature.
CN201510306264.4A 2015-06-05 2015-06-05 Station-domain protection system of intelligent transformer station and function debugging method of system CN104935079A (en)

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CN108830495A (en) * 2018-06-22 2018-11-16 广东电网有限责任公司 Unusual service condition test method and device
CN109343509A (en) * 2018-10-17 2019-02-15 国电南瑞科技股份有限公司 The operation method of transformer station process layer equipment Running System
CN109546630A (en) * 2018-11-28 2019-03-29 华电电力科学研究院有限公司 A kind of 10kV differential protection method for bus based on transformer station process layer networking mode

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Application publication date: 20150923