CN103105550A - Detection method and detection system of intelligent relay protection device - Google Patents
Detection method and detection system of intelligent relay protection device Download PDFInfo
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- CN103105550A CN103105550A CN2013100112746A CN201310011274A CN103105550A CN 103105550 A CN103105550 A CN 103105550A CN 2013100112746 A CN2013100112746 A CN 2013100112746A CN 201310011274 A CN201310011274 A CN 201310011274A CN 103105550 A CN103105550 A CN 103105550A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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Abstract
The invention provides a detection method and a detection system of an intelligent relay protection device. Aiming at the situation that compared with the prior art, dynamic properties of the relay protection device cannot be detected effectively in an intelligent substation spot, and starting from the feature of sharing of digitalization and informatization of an intelligent substation secondary system, the detection method which regards a digit simulation system as a data source and regards synchronous working of a plurality of digitized relay protection testers is provided and the detection system of the intelligent relay protection device is constructed. Various operating situations which probably happen in a transformer substation can be simulated according to an actual electric topological structure of an intelligent substation and device parameters construction and simulation models in a lab, simulating calculation can be conducted, transient test data which have higher similarity with the actual operating situations can be achieved by transforming, the transient test data can be output in the intelligent substation spot in a playback mode, and detection of the dynamic properties of the relay protection device and checkout work of protection definite value can be carried out.
Description
Technical field
The present invention relates to digital-to-analogue hybrid simulation test and intelligent substation experimental technique field, specifically a kind of intelligent protective relaying 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 has entered into the stage of applying.Compare with traditional transformer station, larger variation has occured in structure and the information transmission mode between equipment of secondary equipment of intelligent converting station, causes intelligent secondary device detection technique that corresponding change has occured.Existing intelligent protective relaying device detection method and system mainly contain three kinds, and be as follows:
1, digital relay protection tester
The digital relay protection tester is to use at present maximum intelligent protective relaying device pick-up units; can export the digital message that meets IEC61850 and IEC60044-8 standard; and can add the compositions such as harmonic wave, DC component in output signal; at the intelligent substation scene, intelligent protective relaying device is detected, have easy to carry, measuring ability is many, use the advantages such as extensive.But, the test data of digital relay protection tester output can't the imitating substation Part load under the transient state process of electric parameters, therefore can not carry out effective Dynamic performance examination to intelligent protective relaying device.
2, based on the digital protection moving die test system of IEC61850 standard
The dynamic model experiment chamber is designed, is built according to the practical power systems model; can provide and relatively approach actual running environment; it is the good platform that detects protective relaying device; moving die test system after digital improvement can be converted to test figure the message data that meets the IEC61850 standard, and intelligent secondary device is carried out dynamic performance testing and research.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, and subjects has larger limitation, test dirigibility relatively poor, and can't carry out testing at the 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 intelligent substation electric topological structure of reality and device parameter, and contingent various operating conditions in imitating substation carry out dynamic property to intelligent secondary device and detect; When transformer station's topological structure and device parameter change, in simulation software, model is modified, need not increases or changes hardware device, and dirigibility is higher.But this pilot system only can be carried out testing in the laboratory.
In sum, although the digital relay protection tester can be carried out the steady-state behaviour test to intelligent protective relaying device at substation field, can't carry out effective Dynamic performance examination; Although digital protection moving die test system and Digital Simulation test macro based on the IEC61850 standard can be carried out Dynamic performance examination to intelligent protective relaying device, can not carry out at the intelligent substation scene corresponding experiment work.
Summary of the invention
Can't carry out to protective relaying device the present situation that effective dynamic property detects at the intelligent substation scene for existing detection method and checkout equipment, the present invention proposes a kind of intelligent protective relaying device detection method, and set up detection system.The method and system can topological structure electric according to intelligent substation and device parameter build realistic model; the on-the-spot contingent various operating conditions of imitating substation; carry out simulation calculation and be converted to the transient test data higher with the actual operating mode similarity; carry out at the intelligent substation scene that the protective relaying device dynamic property detects and the verifying work of protection definite value, the method and system have solved the defective that present detection method exists.
The invention provides a kind of intelligent protective relaying device detection method, comprise the steps:
Step 1: collect the intelligent substation in-situ data, described in-situ data comprises transformer station's topological structure, primary equipment parameter and current/voltage mutual inductor ratio etc., and formulate corresponding testing program according to the detection demand, the content of testing program comprises test item, sensing range, trouble spot setting, fault type and test output data type;
Step 2: build intelligent substation primary system realistic model according to in-situ data, the emulated data output channel is set, guarantee that the simulation data test data conforms to the test demand;
Step 3: in the Digital Simulation pilot system, use described realistic model to carry out simulation calculation to the various operating conditions of intelligent substation, and the output transient state simulation data;
Step 4: transient state simulation data is converted to the message data that meets the IEC61850 agreement, these data are the message data that the transforming plant protecting device can be identified, and can be the data that meet the IEC61850-9-2 agreement;
Step 5: import configuration file (the SubstationConfiguration Description that entirely stands of transformer station in memory device, SCD), the message data that above step generates is stored according to the configuration of SCD, the recorded wave file that if needed can be converted to the COMTRADE form is stored, and the data of storage are the transient test data;
Step 6: the data of storage are carried into test site, and unloading is to the digital relay protection tester equipment that participates in test job;
Step 7: utilize clock synchronization device to the digital relay protection tester that participates in test job send to the time signal, guarantee that test data can synchronously export;
Step 8: configure the output of each digitizing relay-protection tester according to transformer station's configuration file (SCD) of entirely standing, under the coordination of synchronizing signal, in the on-the-spot synchronous output transient test data of intelligent substation; Can select the type that outputs test data according to the detection demand: in the time of need to outputing test data merge cells to correspondence, the message data that tester output meets the IEC60044-8 agreement is set, if need to output test data to the intelligent protective relaying device of correspondence, output meets the message data of IEC61850-9-2 agreement;
Step 9: the correctness of the dynamic property of the intelligent protective relaying device of examination, verification relevant protection definite value and detection secondary circuit.
Intelligent protective relaying device detection method as above, described step 9 is specially: judge whether to detect full station secondary circuit or the uniting and adjustment of entirely standing,
If judgment result is that be, execution in step 91: the message data that the output of digital relay protection tester meets the IEC60044-8 agreement is to merge cells, and then execution in step 92: carry out the detection of intelligent protective relaying device dynamic property, protection definite value and secondary circuit;
If the determination result is NO; execution in step 93: the output of digital relay protection tester meets the message data of IEC61850-9-2 agreement to intelligent protective relaying device, and then execution in step 94: carry out the detection of protective device dynamic property, protection definite value.
Intelligent protective relaying 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 that in described step 4, conversion generates is 80 points/cycle; The sampling rate of the recorder data that generates in step 5 is not less than 80 points/cycle.
The present invention also provides a kind of intelligent protective relaying device detection system, comprises Digital Simulation unit, signal conversion unit, data storage cell and test output unit.Wherein:
Described Digital Simulation unit, consisted of by Digital Simulation System (such as ADPSS, RTDS etc.) or digital simulation software (such as PSCAD/EMTDC, EMTP etc.), be used for topological structure electric according to transformer station and device parameter and build realistic model, the on-the-spot contingent various operating conditions of imitating substation carry out simulation calculation and generate transient state simulation data.
Described signal conversion unit is used for the transient state simulation data of Digital Simulation unit output is changed to the message data that meets IEC61850-9-2 agreement (the message data form that can identify for substation secondary device);
Described data storage cell is used for the message data that signal conversion unit generates is stored, and this unit should have the ability that the message data that will meet the IEC61850-9-2 agreement is converted to the recorded wave file of COMTRADE form;
Described clock synchronous unit, be used for to many digitizing relay-protection testers carry out to the time, guarantee that all testers that participate in detecting synchronously send test data;
Described detection output unit is comprised of many digital relay-protection testers, and check point is synchronously resolved and exported to the tester that participates in detecting with the test data that the data storage cell unloading is come under the coordination of synchronous clock, carry out testing.Can select the output detection signal type according to detecting target and detection demand; if need to output test data during merge cells to correspondence; the message data that tester parses the IEC60044-8 agreement is set; if need to output test data to the intelligent protective relaying device of correspondence, parse the message data of IEC61850-9-2 agreement.
Intelligent protective relaying device detection system as above, described signal conversion unit is comprised of physical interface case, power amplifier, collector and merge cells, and the transient state simulation data of Digital Simulation unit output is converted to the small voltage signal through the physical interface case; Power amplifier is enlarged into electromagnetic transformer secondary side voltage/current signals with the small voltage signal; Collector is converted to electromagnetic transformer secondary side voltage/current signals the message data that meets IEC60044-8 (FT3) stipulations; Import the SCD configuration file in merge cells, the IEC60044-8 stipulations message data of collector being exported according to the SCD configuration file is converted to corresponding IEC61850-9-2 message data.
Intelligent protective relaying device detection method and advantage of system based on simulated failure playback principle of the present invention is:
(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 had made up present detection method existence is not;
(2) detection method of the present invention and system can topological structure electric according to intelligent substation and device parameter build realistic model, contingent various operating conditions in imitating substation carry out simulation calculation and are converted to the transient test data higher with the actual operating mode similarity;
(3) detection system can under the coordination of synchronous clock, use many digital relay-protection testers synchronously to carry out testing; The remote end module that tester simulated intelligence substation field is all outputs test data to corresponding merge cells, outputs test data to the full station of transformer station simultaneously, carries out the collaborative detection in full station.
(4) can realize at the intelligent substation scene, protective device being protected the verification of the matching relationship between definite value and protection definite value.
(5) Digital Simulation System is powerful, fault arranges easily advantage and protection tester and uses widely that characteristics combine, and detection system consists of simple, and easy to detect, cost is low.
Description of drawings
Fig. 1 is the workflow diagram of the intelligent protective relaying device detection method of the present invention;
Fig. 2 is the structural representation of the intelligent protective relaying 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 the 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 the background monitoring device, the configuration of secondary device list cover, and straight jumping networking mode is directly adopted in the protective device employing; Described intelligent substation field process layer equipment comprises that 6 electronic type voltage transformers (EVT), 6 electronic current mutual inductors (ECT), 7 merge cellses (MU), 6 intelligent terminals (ST) form, and each process layer devices installation site and corresponding relation are as shown in Figure 3.
Described pilot system need to be stood entirely, and secondary circuit detects and the electrical secondary system uniting and adjustment, so the formulation testing program is as follows:
(1) (PNF-801) digital protective relay tester (being numbered PNF1-PNF7) 12 remote end modules of simulation (ECT1-ECT6, EVT1-EVT6) that use 7 same models are to 7 merge cellses (MU1-MU7) output test data, and the test data form meets the 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 troubles (trouble spot arranges as the K1-K6 in Fig. 3) occur, detect the protection transient characterisitics and check low-pressure side back-up protection, main transformer protection definite value.
(3) in detection system, data storage cell need to be converted to the IEC61850-9-2 message data that obtains the recorded wave file of COMTRADE form.
One of them embodiment of the intelligent protective relaying 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 protective relaying device detection system structure and detection signal transmit schematic diagram as shown in Figure 4, wherein:
Described Digital Simulation unit is comprised of the ADPSS analogue system, comprises ADPSS simulation software, server hardware, terminal workstation and other utility appliance.Build realistic model according to intelligent substation primary equipment parameter (comprising current/voltage mutual inductor ratio and installation site) in the ADPSS analogue system, formulate testing program, carry out simulation calculation, output transient state simulation data (digital quantity).Testing program comprises test item, sensing range, trouble spot and fault type and test output data type etc., and for example, K1-K6 is as shown in Figure 3 selected in the trouble spot.
Described signal conversion unit is comprised of physical interface case, power amplifier, collector and merge cells.The transient state simulation data (digital quantity) of Digital Simulation unit output is converted to small voltage signal (0-10V) through the physical interface case; Power amplifier is enlarged into electromagnetic transformer secondary side voltage/current signals (voltage range is that 100V, current range are 5A/1A) with the small voltage signal; Collector is converted to electromagnetic transformer secondary side voltage/current signals the message data that meets IEC60044-8 (FT3) stipulations; Import the SCD configuration file in merge cells, the IEC60044-8 stipulations message data of collector being exported according to the SCD configuration file is converted to corresponding IEC61850-9-2 message data.
Described data storage cell mainly is comprised of network analyzer, and this network analyzer has message analysis and failure wave-recording function; In the present embodiment, network analyzer is stored the recorded wave file that the IEC61850-9-2 message data of signal conversion unit output changes the COMTRADE form into.
Described test output unit comprises the digital relay protection tester of 7 same models.Carry out the configuration of data passage after importing SCD configuration file and recorded wave file in the digital relay protection tester; Through the B code to the time after, 7 testers all are set to zero crossing and start, the test data that synchronous output meets the IEC60044-8 stipulations is to merge cells (MU1-MU7), digital relay protection survey and the merge cells one-to-one relationship as shown in Figure 4.
Described clock synchronous unit comprises that synchronized clock system and optical fiber are some, clock system adopt the B code to the time mode to 7 digital relay-protection testers send to the time signal.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.
Claims (5)
1. intelligent protective relaying device detection method is characterized in that comprising the following steps:
Step 1: the in-situ data of collecting intelligent substation, described in-situ data comprises topological structure, the device parameter of intelligent substation, and formulate corresponding testing program according to the detection demand, the content of testing program comprises test item, sensing range, trouble spot setting, fault type and test output data type;
Step 2: build intelligent substation data primary system realistic model with reference to in-situ data, the emulated data output channel is set, guarantee that the simulation data test data conforms to the test demand;
Step 3: in the Digital Simulation pilot system, use described realistic model to carry out simulation calculation to the various operating conditions of intelligent substation, the output transient state simulation data;
Step 4: transient state simulation data is converted to the message data that meets the IEC61850-9-2 agreement;
Step 5: the message data that meets the IEC61850-9-2 agreement that above step generates is stored, and the recorded wave file that described message data can be converted to as required the COMTRADE form is stored, and the data of storage are the transient test data;
Step 6: the transient test data of storage are carried into test site, and unloading is to the digital relay protection tester that participates in test job;
Step 7: utilize clock synchronization device to the digital relay protection tester that participates in test job send to the time signal, guarantee that test data can synchronously export;
Step 8: according to intelligent substation configuration file (the Substation ConfigurationDescription that entirely stands, SCD) configure the output of each digitizing relay-protection tester, step 7 described to the time signal coordination under synchronous output transient test data; Can select the type that outputs test data according to the detection demand: in the time of need to outputing test data merge cells to correspondence, the message data that the output of digital relay protection tester meets the IEC60044-8 agreement is set, if need to output test data to the protective relaying device of correspondence, output meets the message data of IEC61850-9-2 agreement;
Step 9: the correctness of the dynamic property of the intelligent protective relaying device of examination, verification relevant protection definite value and detection secondary circuit.
2. intelligent protective relaying device detection method as claimed in claim 1, it is characterized in that: described step 9 is specially: judge whether to detect full station secondary circuit or the uniting and adjustment of entirely standing,
If judgment result is that be, execution in step 91: the message data that the output of digital relay protection tester meets the IEC60044-8 agreement is to merge cells, and then execution in step 92: carry out the detection of intelligent protective relaying device dynamic property, protection definite value and secondary circuit;
If the determination result is NO; execution in step 93: the output of digital relay protection tester meets the message data of IEC61850-9-2 agreement to intelligent protective relaying device, and then execution in step 94: carry out the detection of protective device dynamic property, protection definite value.
3. intelligent protective relaying device detection method as claimed in claim 1, it is characterized in that: 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 that in described step 4, conversion generates is 80 points/cycle; The sampling rate of the recorder data that generates in step 5 is not less than 80 points/cycle.
4. intelligent protective relaying device detection system is characterized in that: comprise Digital Simulation unit, signal conversion unit, data storage cell and test output unit, wherein:
Described Digital Simulation unit is used for building realistic model according to electric topological structure and the device parameter of intelligent substation, and contingent various operating conditions in imitating substation carry out simulation calculation output transient state simulation data;
Described signal conversion unit is used for the transient state simulation data of Digital Simulation unit output is changed to the message data that meets the IEC61850-9-2 agreement;
Described data storage cell is used for the message data that signal conversion unit generates is stored, and this unit should have the ability that the message data that will meet the IEC61850-9-2 agreement is converted to the recorded wave file of COMTRADE form;
Described clock synchronous unit, be used for to many digitizing relay-protection testers carry out to the time, guarantee that all testers that participate in detecting synchronously send test data;
Described test output unit, formed by many digitizing relay-protection testers, the digital relay protection tester that participates in test to the time signal coordination under, after the message data of storing in data storage cell is resolved, synchronously output test data to check point, carry out testing;
The test data of described test output unit output has two classes; can select the type that outputs test data according to the detection demand: in the time of need to exporting test data to merge cells; the message data that the output of digital relay protection tester meets the IEC60044-8 agreement is set; if test data need to be exported to corresponding intelligent protective relaying device, output meets the message data of IEC61850-9-2 agreement.
5. intelligent protective relaying device detection system as claimed in claim 4, it is characterized in that: described signal conversion unit is comprised of physical interface case, power amplifier, collector and merge cells, and the transient state simulation data of Digital Simulation unit output is converted to the small voltage signal through the physical interface case; Power amplifier is enlarged into electromagnetic transformer secondary side voltage/current signals with the small voltage signal; Collector is converted to electromagnetic transformer secondary side voltage/current signals the message data that meets IEC60044-8 (FT3) stipulations; Import the SCD configuration file in merge cells, the IEC60044-8 stipulations message data of collector being exported according to the SCD configuration file is converted to corresponding IEC61850-9-2 message data.
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| CN201310011274.6A CN103105550B (en) | 2013-01-14 | 2013-01-14 | A kind of intelligent relay protection device detection method and system |
| PCT/CN2013/088528 WO2014108002A1 (en) | 2013-01-14 | 2013-12-04 | Detection method and system of intelligent relay protection device |
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