CN103105550B - A kind of intelligent relay protection device detection method and system - Google Patents

A kind of intelligent relay protection device detection method and system Download PDF

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Publication number
CN103105550B
CN103105550B CN201310011274.6A CN201310011274A CN103105550B CN 103105550 B CN103105550 B CN 103105550B CN 201310011274 A CN201310011274 A CN 201310011274A CN 103105550 B CN103105550 B CN 103105550B
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data
relay protection
test
intelligent
detection
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CN201310011274.6A
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Chinese (zh)
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CN103105550A (en
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张侃君
陈磊
夏勇军
胡刚
王婷
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国家电网公司
国网湖北省电力公司电力科学研究院
武汉方源东力电力技术中心
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Priority to CN201310011274.6A priority Critical patent/CN103105550B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272Apparatus, systems or circuits therefor
    • G01R31/3274Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance

Abstract

The invention provides a kind of intelligent relay protection device detection method and system; it cannot in the on-the-spot situation of protective relaying device dynamic property being carried out to effectively detect of intelligent substation for prior art; from secondary system of intelligent substation digitizing, the information-based feature shared; propose a kind of take Digital Simulation System as data source, the multiple stage digital relay protection tester synchronous working detection method that is detection means, and set up intelligent relay protection device detection system.The present invention can build realistic model according to the actual electrically topological structure of intelligent substation and device parameter in the lab; contingent various operating condition in imitating substation; carry out simulation calculation and be converted to the transient test data higher with actual operating mode similarity; at intelligent substation scene, " playback " exports transient test data, carries out the verifying work of protective relaying device dynamic performance testing and protection definite value.

Description

A kind of intelligent relay protection device detection method and system

Technical field

The present invention relates to numerical model analysis l-G simulation test and intelligent substation experimental technique field, specifically a kind of intelligent relay protection device detection method and system.

Background technology

The construction of intelligent grid has become the development strategy of country, and it is imperative that intelligent substation progressively replaces traditional integrated automation of transformation stations transformer station; At present, intelligent substation enters into the stage of applying.Compared with traditional transformer station, the information transmission mode between the structure of secondary equipment of intelligent converting station and equipment there occurs larger change, causes intelligent secondary device detection technique to there occurs corresponding change.Existing intelligent relay protection device detection method and system mainly contain three kinds, as follows:

1, digital relay protection tester

Digital relay protection tester uses maximum intelligent relay protection device pick-up units at present; the digital message meeting IEC61850 and IEC60044-8 specification can be exported; and the composition such as harmonic wave, DC component can be added in the output signal; intelligent substation scene intelligent relay protection device is detected, have easy to carry, measuring ability is many, use the advantages such as extensive.But the test data that digital relay protection tester exports cannot the transient state process of electric parameters under imitating substation Part load, therefore can not carry out effective Dynamic performance examination to intelligent relay protection device.

2, based on the digital protection moving die test system of IEC61850 standard

Dynamic model experiment room carries out designing, building according to practical power systems model; relatively actual running environment can be provided; it is the good platform detecting protective relaying device; test figure can be converted to the message data meeting IEC61850 specification by the moving die test system after digital improvement, carries out dynamic performance testing and research to intelligent secondary device.But moving die test system investment is large, it is wide to take up an area, the restriction of the system architecture that is put to the test and scale, subjects has larger limitation, test dirigibility poor, and cannot carry out testing at intelligent substation scene.

3, based on the Digital Simulation test macro of IEC61850 standard

Digital Simulation System based on IEC61850 can build realistic model according to the actual electrically topological structure of intelligent substation and device parameter, and in imitating substation, contingent various operating condition, carries out dynamic property detection to intelligent secondary device; When substation topology structure and device parameter change, modify in simulation software to model, without the need to increasing or changing hardware device, dirigibility is higher.But this pilot system only can carry out testing in laboratory.

In sum, although digital relay protection tester can carry out steady state performance test at substation field to intelligent relay protection device, effective Dynamic performance examination cannot be carried out; Although Dynamic performance examination can be carried out to intelligent relay protection device based on the digital protection moving die test system of IEC61850 standard and Digital Simulation test macro, corresponding experiment work can not be carried out at intelligent substation scene.

Summary of the invention

In the on-the-spot present situation of protective relaying device being carried out to effective dynamic property detection of intelligent substation, a kind of intelligent relay protection device detection method cannot be the present invention proposes, and set up detection system for existing detection method and checkout equipment.The method and system can build realistic model according to intelligent substation electrical topological structure and device parameter; the on-the-spot contingent various operating condition of imitating substation; carry out simulation calculation and be converted to the transient test data higher with actual operating mode similarity; carry out the verifying work that protective relaying device dynamic property detects and protects definite value at intelligent substation scene, the method and system solve the defect that current detection method exists.

The invention provides a kind of intelligent relay protection device detection method, comprise the steps:

Step 1: collect intelligent substation in-situ data, described in-situ data comprises substation topology structure, primary equipment parameter and current/voltage mutual inductor ratio etc., and formulate corresponding testing program according to detection demand, the content of testing program comprises test item, sensing range, trouble spot setting, fault type and test and exports data type;

Step 2: build intelligent substation primary system realistic model according to in-situ data, arrange emulated data output channel, ensures that simulation data test data conforms to test demand;

Step 3: in Digital Simulation pilot system, uses described realistic model to carry out simulation calculation to the various operating condition of intelligent substation, and exports transient state simulation data;

Step 4: transient state simulation data is converted to the message data meeting IEC61850 agreement, the message data that these data can identify for transforming plant protecting device can be the data meeting IEC61850-9-2 agreement;

Step 5: import transformer station in memory device and entirely to stand configuration file (SubstationConfiguration Description, SCD), the message data above step generated stores according to the configuration of SCD, the recorded wave file that if needed can be converted to COMTRADE form stores, and the data of storage are transient test data;

Step 6: the data of storage are carried into test site, unloading is in the digital relay protection tester equipment participating in test job;

Step 7: signal when utilizing clock synchronization device to send pair to the digital relay protection tester participating in test job, guarantees that test data can synchronism output;

Step 8: configure the output of each digitizing relay-protection tester, under the coordination of synchronizing signal, in intelligent substation on-the-spot synchronism output transient test data according to transformer station's configuration file (SCD) of entirely standing; The type outputed test data can be selected: when needing the merge cells outputed test data to correspondence according to detection demand, tester is set and exports the message data meeting IEC60044-8 agreement, if need to output test data to the intelligent relay protection device of correspondence, then export the message data meeting IEC61850-9-2 agreement;

Step 9: the dynamic property of examination intelligent relay protection device, the relevant correctness protected definite value and detect secondary circuit of verification.

Intelligent relay protection device detection method as above, described step 9 is specially: judge whether to detect full station secondary circuit or uniting and adjustment of entirely standing,

If judged result is yes, then perform step 91: the output of digital relay protection tester meets the message data of IEC60044-8 agreement to merge cells, then performs step 92: the detection carrying out intelligent relay protection device dynamic property, protection definite value and secondary circuit;

If judged result is no; then perform step 93: the output of digital relay protection tester meets the message data of IEC61850-9-2 agreement to intelligent relay protection device, then performs step 94: the detection carrying out protective device dynamic property, protection definite value.

Intelligent relay protection device detection method as above, the simulation step length of the transient state simulation data in described step 1 is not more than 250 microseconds; The sampling rate of the message data of generation is changed into 80 points/cycle in described step 4; The sampling rate of the recorder data generated in step 5 is not less than 80 points/cycle.

The present invention also provides a kind of intelligent relay protection device detection system, comprises Digital Simulation unit, signal conversion unit, data storage cell and test output unit.Wherein:

Described Digital Simulation unit, be made up of Digital Simulation System (such as: ADPSS, RTDS etc.) or digital simulation software (such as: PSCAD/EMTDC, EMTP etc.), for building realistic model according to transformer station's electric topology structure and device parameter, the on-the-spot contingent various operating condition of imitating substation, carries out simulation calculation and generates transient state simulation data.

Described signal conversion unit, the transient state simulation data for being exported by Digital Simulation unit is changed to the message data meeting IEC61850-9-2 agreement (for the message data form that substation secondary device can identify);

Described data storage cell, stores for the message data generated by signal conversion unit, and this unit should have the ability of the recorded wave file message data meeting IEC61850-9-2 agreement being converted to COMTRADE form;

Described clock synchronization unit, during for carry out multiple stage digital relay protection tester pair, ensures that all testers participating in detecting synchronously send test data;

Described detection output unit, is made up of multiple stage digital protective relay tester, and the tester participating in detecting is under the coordination of synchronous clock, and the test data of data storage cell unloading being come synchronously carries out resolving and exporting check point to, carries out testing.Output detections signal type can be selected according to detection target and the demand of detection; if when needing the merge cells outputed test data to correspondence; the message data that tester parses IEC60044-8 agreement is set; if need to output test data to the intelligent relay protection device of correspondence, then parse the message data of IEC61850-9-2 agreement.

Intelligent relay protection device detection system as above, described signal conversion unit is made up of physical interface case, power amplifier, collector and merge cells, and the transient state simulation data that Digital Simulation unit exports is converted to small voltage signal through physical interface case; Small voltage signal is enlarged into electromagnetic transformer secondary side voltage/current signals by power amplifier; Electromagnetic transformer secondary side voltage/current signals is converted to the message data meeting IEC60044-8 (FT3) stipulations by collector; Import SCD configuration file in merge cells, the IEC60044-8 stipulations message data exported by collector according to SCD configuration file is converted to corresponding IEC61850-9-2 message data.

Of the present inventionly to be based on the intelligent relay protection device detection method of simulated failure playback principle and the advantage of system:

(1) detection method of the present invention and system can carry out the verifying work of protective relaying device dynamic property and protection definite value in intelligent substation, and what the method and system compensate for the existence of current detection method is not;

(2) detection method of the present invention and system can build realistic model according to intelligent substation electrical topological structure and device parameter, contingent various operating condition in imitating substation, carries out simulation calculation and is converted to the transient test data higher with actual operating mode similarity;

(3) detection system can, under the coordination of synchronous clock, use multiple stage digital protective relay tester synchronously to carry out testing; The remote end module that tester simulated intelligence substation field is all, outputs test data to corresponding merge cells, entirely outputs test data at station simultaneously, carry out cooperation detection of entirely standing to transformer station.

(4) can be implemented in on-the-spot verification protective device being carried out to the matching relationship protected between definite value and protection definite value of intelligent substation.

(5) Digital Simulation System is powerful, fault verification easily advantage and relay testing instrument use feature widely to combine, detection system forms simple, and easy to detect, cost is low.

Accompanying drawing explanation

Fig. 1 is the workflow diagram of intelligent relay protection device detection method of the present invention;

Fig. 2 is the structural representation of intelligent relay protection device detection system of the present invention;

Fig. 3 is primary system main electrical scheme and equipment installation site schematic diagram in one embodiment of the invention;

Wherein, ECT represents electronic current mutual inductor, and EVT represents electronic type voltage transformer, and MU represents merge cells, and ST represents intelligent terminal, and K represents trouble spot;

Fig. 4 is detection system structure and detection signal transmission schematic diagram in one embodiment of the invention.

Embodiment

Below in conjunction with specific embodiment, the technical scheme in the present invention is clearly and completely described.

In one embodiment of the invention, intelligent substation primary system main electrical scheme and equipment installation site schematic diagram are as shown in Figure 3, described intelligent substation is a 220kV intelligent substation pilot system, system configuration has background monitoring device, the configuration of secondary device list cover, and protective device adopts and directly adopts and directly jump networking mode; Described intelligent substation field process layer equipment comprises 6 electronic type voltage transformers (EVT), 6 electronic current mutual inductors (ECT), 7 merge cellses (MU), 6 intelligent terminal (ST) compositions, and each process layer devices installation site and corresponding relation are as shown in Figure 3.

Described pilot system needs entirely stand secondary circuit detection and electrical secondary system uniting and adjustment, so it is as follows to formulate testing program:

(1) use (PNF-801) digital protective relay tester (being numbered PNF1-PNF7) of 7 same models to simulate 12 remote end modules (ECT1-ECT6, EVT1-EVT6) to 7 merge cells (MU1-MU7) output test data, test data form meets IEC60044-8 stipulations.

(2) embodiment of the present invention mainly examine low-pressure side back-up protection definite value and with the coordinating of main transformer protection definite value; so; main transformer low-pressure side diverse location is set various types of short trouble (trouble spot is arranged as the K1-K6 in Fig. 3) occurs, detect protection transient characterisitics and check low-pressure side back-up protection, main transformer protection definite value.

(3) in detection system, data storage cell needs the recorded wave file IEC61850-9-2 message data of acquisition being converted to COMTRADE form.

One of them embodiment of intelligent relay protection device detection system of the present invention comprises Digital Simulation unit, signal conversion unit, data storage cell, time synchronized unit and test output unit.Intelligent relay protection device detection system structure and detection signal transmit schematic diagram as shown in Figure 4, wherein:

Described Digital Simulation unit, is made up of ADPSS analogue system, comprises ADPSS simulation software, server hardware, terminal workstation and other utility appliance.In ADPSS analogue system, realistic model is built according to intelligent substation primary equipment parameter (comprising current/voltage mutual inductor ratio and installation site), formulate testing program, carry out simulation calculation, export transient state simulation data (digital quantity).Testing program comprises test item, sensing range, trouble spot and fault type and test exports data type etc., and such as, K1-K6 is as shown in Figure 3 selected in trouble spot.

Described signal conversion unit, is made up of physical interface case, power amplifier, collector and merge cells.The transient state simulation data (digital quantity) that Digital Simulation unit exports is converted to small voltage signal (0-10V) through physical interface case; Small voltage signal is enlarged into electromagnetic transformer secondary side voltage/current signals (voltage range be 100V, current range be 5A/1A) by power amplifier; Electromagnetic transformer secondary side voltage/current signals is converted to the message data meeting IEC60044-8 (FT3) stipulations by collector; Import SCD configuration file in merge cells, the IEC60044-8 stipulations message data exported by collector according to SCD configuration file is converted to corresponding IEC61850-9-2 message data.

Described data storage cell, primarily of network analyzer composition, this network analyzer has message analysis and failure wave-recording function; In the present embodiment, the recorded wave file that the IEC61850-9-2 message data that signal conversion unit exports by network analyzer changes COMTRADE form into stores.

Described test output unit, comprises the digital relay protection tester of 7 same models.SCD configuration file and the laggard row data channel configuration of recorded wave file is imported in digital relay protection tester; After when B code pair, 7 testers are all set to zero crossing and start, and synchronism output meets the test data of IEC60044-8 stipulations to merge cells (MU1-MU7), and digital relay protection survey and merge cells one-to-one relationship are as shown in Figure 4.

Described clock synchronization unit, comprises synchronized clock system and optical fiber is some, and during clock system employing B code pair, mode is to signal during 7 digital relay-protection testers transmissions pair.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.

Claims (4)

1. an intelligent relay protection device detection method, is characterized in that comprising the following steps:
Step 1: the in-situ data collecting intelligent substation, described in-situ data comprises topological structure, the device parameter of intelligent substation, and formulate corresponding testing program according to detection demand, the content of testing program comprises test item, sensing range, trouble spot setting, fault type and test and exports data type;
Step 2: build intelligent substation data primary system realistic model with reference to in-situ data, emulated data output channel is set, ensure that simulation data test data conforms to test demand;
Step 3: in Digital Simulation pilot system, uses described realistic model to carry out simulation calculation to the various operating condition of intelligent substation, exports transient state simulation data;
Step 4: transient state simulation data is converted to the message data meeting IEC 61850-9-2 agreement;
Step 5: the message data meeting IEC 61850-9-2 agreement above step generated stores, and the recorded wave file as required described message data being converted to COMTRADE form stores, and the data of storage are transient test data;
Step 6: the transient test data of storage are carried into test site, unloading is in the digital relay protection tester participating in test job;
Step 7: signal when utilizing clock synchronization device to send pair to the digital relay protection tester participating in test job, guarantees that test data can synchronism output;
Step 8: configure the output of each digitizing relay-protection tester according to intelligent substation configuration file of entirely standing, time described in step 7 pair signal coordination under synchronism output transient test data; The type outputed test data can be selected: when needing the merge cells outputed test data to correspondence according to detection demand, digital relay protection tester is set and exports the message data meeting IEC 60044-8 agreement, if need to output test data to the intelligent relay protection device of correspondence, then export the message data meeting IEC 61850-9-2 agreement;
Step 9: the dynamic property of examination intelligent relay protection device, the relevant correctness protected definite value and detect secondary circuit of verification.
2. intelligent relay protection device detection method as claimed in claim 1, is characterized in that: described step 9 is specially: judge whether to detect full station secondary circuit or uniting and adjustment of entirely standing,
If judged result is yes, then perform step 91: the output of digital relay protection tester meets the message data of IEC 60044-8 agreement to merge cells, then performs step 92: the detection carrying out intelligent relay protection device dynamic property, protection definite value and secondary circuit;
If judged result is no; then perform step 93: the output of digital relay protection tester meets the message data of IEC 61850-9-2 agreement to intelligent relay protection device, then performs step 94: the detection carrying out intelligent relay protection device dynamic property, protection definite value.
3. an intelligent relay protection device detection system, is characterized in that: comprise Digital Simulation unit, signal conversion unit, data storage cell, clock synchronization unit and test output unit, wherein:
Described Digital Simulation unit, for building realistic model, contingent various operating condition in imitating substation according to the electric topology structure of intelligent substation and device parameter, carrying out simulation calculation and exporting transient state simulation data;
Described signal conversion unit, is converted to for the transient state simulation data exported by Digital Simulation unit the message data meeting IEC 61850-9-2 agreement;
Described data storage cell, stores for the message data generated by signal conversion unit, and this unit should have the ability message data meeting IEC 61850-9-2 agreement being converted to the recorded wave file of COMTRADE form;
Described clock synchronization unit, during for carry out multiple stage digital relay protection tester pair, ensures that all testers participating in detecting synchronously send test data;
Described test output unit, be made up of multiple stage digital relay protection tester, participate in test digital relay protection tester pair time signal coordination under, after the message data stored in data storage cell is resolved, synchronism output test data, to check point, carries out testing;
The test data that described test output unit exports has two classes; the type outputed test data can be selected: when needing to export test data to merge cells according to detection demand; digital relay protection tester is set and exports the message data meeting IEC 60044-8 agreement; if need test data to be exported to corresponding intelligent relay protection device, then export the message data meeting IEC 61850-9-2 agreement.
4. intelligent relay protection device detection system as claimed in claim 3, it is characterized in that: described signal conversion unit is made up of physical interface case, power amplifier, collector and merge cells, the transient state simulation data that Digital Simulation unit exports is converted to small voltage signal through physical interface case; Small voltage signal is enlarged into electromagnetic transformer secondary side voltage/current signals by power amplifier; Electromagnetic transformer secondary side voltage/current signals is converted to the message data meeting IEC 60044-8 (FT3) stipulations by collector; Import SCD configuration file in merge cells, the IEC 60044-8 stipulations message data exported by collector according to SCD configuration file is converted to corresponding IEC 61850-9-2 message data.
CN201310011274.6A 2013-01-14 2013-01-14 A kind of intelligent relay protection device detection method and system CN103105550B (en)

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PCT/CN2013/088528 WO2014108002A1 (en) 2013-01-14 2013-12-04 Detection method and system of intelligent relay protection device

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