CN1040252C - Microcomputer debugging method with relay protection and device - Google Patents
Microcomputer debugging method with relay protection and device Download PDFInfo
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- CN1040252C CN1040252C CN 93114341 CN93114341A CN1040252C CN 1040252 C CN1040252 C CN 1040252C CN 93114341 CN93114341 CN 93114341 CN 93114341 A CN93114341 A CN 93114341A CN 1040252 C CN1040252 C CN 1040252C
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Abstract
The present invention relates to a method and a device for testing and debugging a relaying protection device. The device of the present invention comprises a central processing unit (CPU), a serial port, a switching value output device, a switching value input device and multiway analogue quantity output, wherein the switching value output device and the switching value input device are controlled by the CPU and are also respectively connected with the switching value input and the switching value output of a tested protection device, and the multiway analogue quantity output is added to the primary side of the alternating quantity input of the protection device by power amplification or is directly added to the secondary side of the alternating quantity input of the tested protection device. The microcomputer processor is used for sequentially generating detecting or correcting signals for switching values or analogue quantity, and automatic check for the correctness of input contact points and output contact points of the protection device, automatic check for protection fixed values, etc. are completed by closed-loop check of the output switching value of the protection device.
Description
The present invention relates to the method and the device thereof of protective relaying device test and debugging.
Existing protective relaying device especially microcomputer protective relay device is checked in the definite value of dispatching from the factory; total group test and field adjustable be difficulty comparatively; loaded down with trivial details; early stage reaying protection test device; can produce three-phase voltage; current waveform (referring to the RT-1 instructions); and is furnished with keyboard; subsidiary functions such as printer; test to relay protection is that each project is carried out separately; the tester who needs higher technical merit intervenes its operation; so; the traditional relay protection test unit in fact mainly is a kind of waveform generator; the MRT-01 type Computerized multifunctional proving installation of Chu Xianing afterwards; (referring to " Electric Power Automation Equipment " fourth phase in 1991; and 1992 the 3rd; the fourth phase) also similar with RT-1; by microprocessor; LCD; formations such as keyboard; and introduce the partial status information of relay protection; as jump A; B; the C phase; reclosing action etc.; but do not constitute a complete closed loop debug system with tested protective device; it is still the used test battery method of original proving installation of having quoted to the test of protection; the test of each project is still respectively carries out; need the artificial not trunk snap of testing crew of higher technical merit to give; software function is not strong, uses inconvenient.
One cover protective relaying device has a large amount of output contacts (output state information); represent the three-phase tripping operation information (many groups are generally arranged) of protection respectively; reclosing information (as single-pole reclosing, three-phase reclosing, locking reclosing etc.); machine for receiving and emitting message information (send out, reception etc.), and comprise warning, cutter, cutting load, telemechanical, record ripple information etc.In addition, relay protection also has tens input contacts (input state information), respectively the input information of representative protection (input information, as throw from, throw zero sequence etc., passage Test Information, reception information etc.).Desire guarantees relay protection is done comprehensively; complete self-verifying; must make debugging apparatus connect protective device all inputs, go out contact; output three-phase voltage and electric current are given tested protection; also must know definite value size and the status information that protective device is present in addition, could constitute closed-loop system with tested protection like this.
The object of the invention is exactly that all output contacts that make debugging apparatus introduce protection are set; and send contact respectively with the protection all the input contacts link; and add three-phase voltage and electric current to protection; and can access protection and information definite value size by serial port, thereby realize constituting the microcomputer debugging method and the device thereof of closed-loop system with tested protective device.
Technical solution of the present invention is: it comprises microprocessor (CPU) and serial port; switching value output and input media by its control; they are imported with the switching value of tested protective device respectively; output links; also comprise the multi-analog output that makes the protective relaying device action; be added to the primary side of tested protective device of ac input or directly be added to the secondary side that tested protective device of ac is imported by power amplification; automatically call in the definite value of tested protective device by serial port; and produce successively by microprocessor and to be used to detect or the switching value or the analog signals of verification; closed loop inspection by protective device output switching value; finish the protective device input; the self-verifying of output contact correctness; the automatic verification of protection definite value, the precision checking of protection sampling circuit and the automatic detection of operating time of protection.
Wherein switching value of this device and simulating signal are produced by following content by microprocessor (CPU), and also by the automatic correct judgment of microprocessor (CPU) whether the output that the input of this device switching value connects protective device.
1. the analog quantity output of simulation 0-60V, 0-20In, by the D/A conversion, compositions such as difference product parallel circuit and amplifier control circuit.
2. various faults take place in simulation, and whether all output contacts of check protection move correctly.
Simulation main protection input and withdraw from, a distant place plays news, jumps a position relay, locking sender and contact etc., the conventional input of self-verifying contact correctness.
4. simulated failure, self-verifying are protected each element actuation time.
5. the self-verifying of protection directivity.
6.PT the self-verifying of break alarm.
7. add each grade fault current respectively, automatically verification protection sampling circuit precision.
8. according to the trip boundary of protecting component, simulated failure voltage, electric current is to the automatic gauging of protection definite value.
Above content is the routine inspection content of protective relaying device, and control software also can and deposit EPROM in according to foregoing writing successively in the required microprocessor.
The automatic debugging apparatus of making protective device according to the said method content comprises; microprocessor; serial line interface; power supply, switching value input, output circuit; analogue quantity output circuit; it is characterized in that wherein analogue quantity output circuit comprises the D/A conversion, the S/H maintenance of sampling, D/A multiplier; and operational amplifier etc.; the switching value output circuit comprises latch, optocoupler exit relay etc., and the switching value output contact connects the input end of protective device; the output terminal of protective device connects the switching value input contact of pick-up unit; multi-analog output joins the sampling circuit of protection, and both sides' serial port is connected to each other, thereby constitutes loop detector.
Its course of work and theing contents are as follows is stated:
1. the self-verifying of protection input, output contact:
The automatic debugging apparatus of this Microcomputer Protection is automatically to produce various types of faults respectively; automatically measure the folding condition of protection output contact again by this debugging apparatus; the last correct or error message that on LCD, demonstrates output contact; and specific to some specific output contacts; in addition; to the inspection of output contact is comprehensively, and one does not leak.
Traditional relay protection debugging apparatus is when the input contact of check protection; tested input contact and public short circuit by the protection of commissioning staff's handle; do certain fault again; by the action situation of commissioning staff's check protection, whether correct to determine this input contact, the inspection of these input contacts is very complicated; need observe by storage oscilloscope; as passage test input contact, some in addition can't real simulation, as direction ratio sender, the reception process of protection.The automatic debugging apparatus of this Microcomputer Protection is when the input contact of check protection; carry out according to protection actual act situation; inspection as passage test input contact; at first; automatically debugging apparatus automatically connects passage test contact to protection; measure whether sender in 10 milliseconds of protection then; if, then the reception contact is connected, measure protection and whether in 200 milliseconds, stop news; if; whether measure then that protection continues sender again after 5 seconds, and sender 10 seconds continuously, all these processes are all correct; show that then passage test contact is correct, otherwise show that passage test contact is incorrect.This shows that the automatic debugging apparatus of this Microcomputer Protection can be simulated very complicated real process automatically truly, and automatically check when the input contact of check protection.
2, the self-verifying of protection definite value
Traditional relay protection debugging apparatus is when each definite value of check protection; all be according to the trip boundary of protecting false voltage and electric current to be set by the commissioning staff; simulate corresponding various fault again and determine the definite value of protection, this process is very loaded down with trivial details, and precision is not high yet.The automatic debugging apparatus of this Microcomputer Protection can automatically be done various faults according to the trip boundary of each element of protection, the scope that whether is requiring with each definite value of check protection; if; show that then definite value is correct, if do not exist, then search for the size of definite value automatically and show.Whole definite value inspection is accomplished without any letup, and end product is presented on the liquid crystal, simple and fast.
4, the accuracy test of protection sampling circuit
The precision of traditional relay protection debugging apparatus check protection sampling circuit has only indirectly and knows by each definite value size of measuring protection.The automatic debugging apparatus of this Microcomputer Protection can produce 01I
n-20I
n(rated current I
nCan be 5A or 1A) between electric current and give protection, the protection sample these electric currents after, send sampled value to this automatic debugging apparatus by serial port, and on LCD, demonstrate the sampled data of protection.
5, the self-verifying of operating time of protection
The traditional relay protection debugging apparatus is to do various specific faults by testing crew to the inspection of operating time of protection, and with the change procedure of storage oscilloscope record corresponding actions junctional potential, measures the actuation time of each element of protection.The automatic debugging apparatus of this Microcomputer Protection drops into contact by each element of control protection, does various corresponding faults, measures actuation time of protection by Automatic Program, and all these measuring processes are accurately reliable.
6, the self-verifying of protection warning function
As a cover Microcomputer Protection, it has a lot of self checks, warning function, and traditional relay protection debugging apparatus is difficult to check comprehensively, exactly these self checks, warning function.Whether these functions of the automatic debugging apparatus energy of this Microcomputer Protection self-verifying protection are correct reliable.As the inspection of PT break alarm function to protection.This automatic debugging apparatus at first produces the three-phase imbalance voltage of 4V; at this moment protect in 5 seconds and do not report to the police; produce the three-phase imbalance voltage of 8V then, at this moment protect in 5 seconds and can reliably finish the PT break alarm, but by last PT breakage lock device warning function with regard to the self-verifying protection.
7, the inspection of protection acting characteristic
Traditional relay protection debugging apparatus still must be checked respectively by testing crew the inspection of protection motion characteristic, constantly carries out human intervention, and the automatic debugging apparatus of this Microcomputer Protection is finished checking out automatically of acting characteristic of protection.As to the protection directivity inspection, be automatically simulate various reverse direction failures, check protection reliably is failure to actuate.And reliably working then during the positive dirction fault.Show check result at last.
The present invention and tested protection constitute totally enclosed closed-loop system; input, the output contact of self-verifying protection; the definite value of protection is protected actuation time of each element, sampling circuit precision; multiple function such as acting characteristic; and can be the ad-hoc location of location of mistake to tested protection, the problem of greatly easy-to-look-up protection has reduced and has detected debugging and work on the spot; utilize device of the present invention can check a whole set of protection all-sidedly and accurately, and can finish about kind at 20 minutes.
The invention will be further described below in conjunction with accompanying drawing and example:
Fig. 1 is 8098 chips for block diagram microprocessor CPU of the present invention; CPU is by bus (control line; data line and address wire) be connected keyboard respectively; LCD 102 external units such as grade; protective device switching value output contact 103; protective device switching value input contact 104; and pass through the CPU management 105CPU control simulation volume generation circuit that the RS232 serial port connects protective device, comprise digital-to-analogue D/A change-over circuit; the multi-analog that the waveform smoothing circuit of being made up of difference and integrating circuit 107 is produced connects protective device primary side 109 by power amplification 108 or directly connects the secondary side of protective device.
Microprocessor CPU by following block diagram content output related detection with switching value and analog quantity:
Fig. 2 produces 0-60V voltage, the output of 0.1In-20In electric current for the block diagram that analog quantity output forms.
Fig. 3 is the self-verifying block diagram of output contact
Fig. 4 is the self-verifying block diagram of input contact
Fig. 5 is the automatic gauging of protection definite value
1. call in the definite value of tested protection by serial port
2. for ground distance protection, according to formula U=0.95 * (1+K) * Zzd * I, false voltage and size of current in the time of can obtaining the low definite value of ground distance.
3. add this kind fault according to false voltage of calculating and size of current, check whether ground distance protection moves, if action; illustrate that then the low definite value of the impedance that connects distance protection is correct,, illustrate that then the low definite value of its impedance is on the low side if motionless; down continue the low definite value of its impedance of search, till finding.
4. for ground distance protection, according to formula U=1.05 * (1+K) * Zzd * I, false voltage in the time of can obtaining the impedance high-set setting and size of current.
5. add this kind fault according to false voltage of calculating and size of current, check whether ground distance protection moves,, illustrate that then the impedance high-set setting of ground distance protection is correct if motionless.If action illustrates that then its impedance high-set setting is higher, up continue its impedance high-set setting of search, till finding.
Phase distance protection, power frequency variation are apart from protection, and carrier current protection is equally sought more than the definite value of zero-sequenceprotection etc. is also similar.
Fig. 6 is the self-verifying block diagram of each element actuation time (protection total group test) of protection
Fig. 7 is the self-verifying block diagram of protection directivity
Fig. 8 is the self-verifying block diagram of PT break alarm
Fig. 9 is the automatic verification block diagram of protection sampling circuit precision
Fig. 3-Fig. 9 is the automatic debug process of this microcomputer debugging apparatus to certain specific protection.
Figure 10 is the wiring diagram of switching value output and one group of switching value input.Read-write line WR, the RD of CPU and address AD connect the switching value signal that produces to impact damper U16, U19, (being 74LS373) CPU connects impact damper by data line DBUS data D1-D8 respectively, impact damper drives relay K 1 (DSP2A) output switching value by optocoupler U10 (MC8050), and two impact dampers one have the output of 16 bit switch amounts.The protection switch amount SOUT that introduces connects cpu data line (only drawing among Figure 10 one group) again by multichannel impact damper U6 (74LS244).
Figure 11 is that one tunnel analog quantity produces circuit, and all the other are 8 the road or more multichannel all can be like this years old.The sinusoidal discrete points data that the CPU sampling keeps is by D/A switch D/A and by amplifier U17; Difference channel and U17 that A constitutes; The integrating circuit that B (MC1556) constitutes and adopt the holding circuit LF398 of consulting and be used to export this grade of digital to analog conversion D/A conversion of analog quantity amplitude control and the data line D of CPU through one-level again
1--D
10Connect generation enlargement factor control signal, output then is the setting phase place of CPU generation and the voltage or the current analog amount of amplitude.
Claims (5)
1; a kind of microcomputer debugging method that is used for protective relaying device: it comprises computer processor (CUP) and serial port; switching value output and input circuit by its control; analogue quantity output circuit comprises program control D/A transducer; power amplifier and peripherals such as LCD; keyboard; power supply; all switching value input contacts of its switching value output circuit and tested protective device link; the ruuning situation of the tested protection of programmed control and relay are thrown the situation of moving back; it is characterized in that its switching value input circuit introduces all switching value output contacts of tested protective device; automatically differentiate the everything situation of tested protective device; its analogue quantity output circuit is added to the primary side of tested protective device of ac input by power amplifier or directly is added to the secondary side of of ac input; automatically the electric current during the various fault of simulation; voltage waveform; the serial port of its serial port and tested protective device links; automatically call in the definite value of tested protective device; and tested protective device is debugged automatically according to these definite values; the closed-loop system of Gou Chenging thus; current definite value according to tested protective device is simulated corresponding various electric power system faults automatically; and the situation of moving back is thrown in the operation of controlling tested each relay of protective device automatically; can finish tested protective device input thus; the self-verifying of output contact, the automatic verification of protection definite value; protection; the precision checking of sampling circuit; the verification of the automatic test of operating time of protection and protection action logic.
2, by the described method of claim 1, control produces the analog switch signal and accepts judgement by following content in it is characterized in that:
(1) output of simulation 0.60V, 0.1～20 times of rated current, by the D/A conversion, compositions such as difference product parallel circuit and amplifier control circuit;
(2) various faults take place in simulation, and whether all output contacts of check protection move correctly;
(3) simulation main protection input and withdraw from, distant place take-off, jump the self-verifying of position relay locking sender and contact, conventional input contact correctness;
(4) each element actuation time is protected in the simulated failure self-verifying;
(5) self-verifying of protection directivity;
(6) the mutual induction of voltage self-verifying that the device secondary break is reported to the police that continues;
(7) add each grade of simulation fault current respectively, automatically verification protection sampling circuit precision;
(8) according to the trip boundary of protecting component, simulated failure voltage, electric current is worth automatic gauging to Baoding.
3; a kind ofly be used to realize the described protective relaying device of claim 1 microcomputer debugging apparatus; comprise microprocessor; serial line interface; power supply; the switching value input; output circuit; analogue quantity output circuit; wherein analogue quantity output circuit comprises the D/A conversion; the S/H maintenance of sampling; the D/A multiplier; and operational amplifier etc.; the switching value output circuit comprises latch; optocoupler multicircuit relay etc.; it is characterized in that the switching value output contact connects the input end of protective device; the output terminal of protective device connects the switching value input contact of pick-up unit; multi-analog output joins the sampling circuit of protection, and both sides' serial port is connected to each other, thereby constitutes loop detector.
4, by the described microcomputer debugging apparatus of claim 3, it is characterized in that: the switching value output circuit is connected to impact damper by read-write knot and address wire by microprocessor, and the switching value signal that microprocessor produces drives relay output switching value by data terminal, the impact damper that data line connects impact damper by optocoupler.
5, by claim 3 or 4 described microcomputer debugging apparatus, it is characterized in that analog quantity output passes through D/A switch by microprocessor, and connect sampling hold circuit behind difference that constitutes by amplifier and the integrating circuit, be used to export the digital to analog conversion of analog quantity amplitude control then through one-level, and export the setting phase place of microprocessor generation, the voltage and the current analog amount of amplitude thus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114341 CN1040252C (en) | 1993-11-04 | 1993-11-04 | Microcomputer debugging method with relay protection and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114341 CN1040252C (en) | 1993-11-04 | 1993-11-04 | Microcomputer debugging method with relay protection and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1102479A CN1102479A (en) | 1995-05-10 |
| CN1040252C true CN1040252C (en) | 1998-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114341 Expired - Fee Related CN1040252C (en) | 1993-11-04 | 1993-11-04 | Microcomputer debugging method with relay protection and device |
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|---|---|
| CN (1) | CN1040252C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738955B (en) * | 2009-12-24 | 2012-06-06 | 中国电力科学研究院 | Data automatic recording system for dynamic simulation test and method thereof |
| CN101799501B (en) * | 2010-03-26 | 2012-04-25 | 河南电力试验研究院 | One-key type test method for optical digital relay protection devices |
| CN102435799B (en) * | 2011-04-15 | 2014-01-22 | 北京博电新力电气股份有限公司 | Precise large current generation device |
| CN103310022B (en) * | 2013-07-05 | 2016-08-31 | 湘潭大学 | A kind of protection definite value online tracing system and method |
| CN103558466A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Method for on-line whole group logic calibration of 10kV protecting device |
| CN106199313B (en) * | 2016-08-15 | 2019-03-08 | 国家电网公司 | The amount of the outputing circuit method of calibration and equipment of transforming plant protecting device secondary circuit |
| CN107340448B (en) * | 2016-11-22 | 2019-08-30 | 国家电网公司东北分部 | Utilize the method for control voltage and current phase measurement line protective devices vector |
| CN113533886B (en) * | 2021-07-20 | 2023-12-26 | 河南源网荷储电气研究院有限公司 | Relay protection device on-off reliability test method and device |
-
1993
- 1993-11-04 CN CN 93114341 patent/CN1040252C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1102479A (en) | 1995-05-10 |
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