CN102928717A - Relay protection tripping matrix test system - Google Patents
Relay protection tripping matrix test system Download PDFInfo
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- CN102928717A CN102928717A CN2012104380316A CN201210438031A CN102928717A CN 102928717 A CN102928717 A CN 102928717A CN 2012104380316 A CN2012104380316 A CN 2012104380316A CN 201210438031 A CN201210438031 A CN 201210438031A CN 102928717 A CN102928717 A CN 102928717A
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Abstract
The invention provides a relay protection tripping matrix test system which comprises a programmable logic controller (PLC), an action indicator light and a human-computer interface. A relay protection tester sends a fault pulse signal to the PLC; an input interface, a tripping outlet and an output interface are arranged on the PLC, the input interface is used for collecting action conditions of a switch, the tripping outlet is connected with a protection device, the output interface is used for indicating the action conditions of the switch and connected with the action indicator light, the action indicator light corresponds to the tripping outlet, and hardware numbers of the action indicator light and the tripping outlet are same; and a program is stored in the PLC and receives an action signal of a tripping outlet contact of the protection device through the input interface used for collecting the action conditions of the switch, and a lightening signal is sent to the action indicator light through the output interface used for indicating the action conditions of the switch if the tripping outlet contact acts. According to the relay protection tripping matrix test system, action conditions and action time of the outlets can be visually displayed on the indicator light and a touch screen only by simulating various faults, the debugging process is simplified, debugging time is shortened, field work efficiencies are improved, hardware interfaces are plenty, and functional expansibility is high.
Description
Technical field
The present invention is mainly used in field of relay protection in power, and the outlet logic that is mainly used in the more protective device of some tripping operation outlets such as tranformer protection, bus differential protection, failure protection detects.
Background technology
In field of relay protection in power, excise fast and accurately the important leverage that various faults are safe and stable operations of electric system.For the complicated protective device of some tripping operation outlets; such as tranformer protection, bus differential protection, failure protection etc.; in debugging, need to do a large amount of work for the tripping operation outlet loop; for the complicated protective device of this type of outlet; the method that generally adopts in the Commissioning of Relay Protection work is that to utilize multimeter be the break-make of test outlet terminal; especially in the test of tranformer protection outlet Tripping matrix; maximum testing times can reach 100 times; not only need the time, and slightly do not note just makeing mistakes easily.Therefore, there are not serious problems intuitively of inefficiency, test findings in traditional method of testing.
At present existing a kind of transformer tripping matrix check device can export by disposable test in a large number, has greatly improved work efficiency, but still has very large weak point.Transformer tripping matrix check device is mainly realized the detection of Tripping matrix by hardware, easily because hardware error causes the test result error, even may cause test result incorrect.
Summary of the invention
The object of the invention is to: at present this type of trip protection being exported the problem that exists in matrix test job; the invention provides a kind of effectively solution, primary connection just can be directly displays the outlet logic of the required verification of every kind of protection intuitively.
The technical solution adopted in the present invention is:
Relay protection Tripping matrix test macro, the of ac output terminal of described relay-protection tester connects the of ac input end of protective device, and described relay protection Tripping matrix test macro comprises PLC, action indicator and man-machine interface;
PLC is by the down pulse output terminal of operating switch interface connection relay-protection tester, and relay-protection tester sends failure pulse signal to PLC;
Be provided with output interface that several input interfaces that be used for to gather the switch motion situation and several are used to indicate the switch motion situation on the PLC, both quantity is identical, each input interface that be used for to gather the switch motion situation connects a tripping operation outlet of protective device, output interface that each is used to indicate the switch motion situation connects an action indicator, and action indicator and the tripping operation of protective device export corresponding and hardware number is identical one by one;
The PLC storage inside has the logic instruction of program, executive routine, receive the actuating signal of the tripping operation outlet contact of protective device by above-mentioned input interface for gathering the switch motion situation, if the action of tripping operation outlet contact, then send to action indicator by the output interface that is used to indicate the switch motion situation and to light signal;
PLC connects man-machine interface by communication serial port, sets and revises the parameter of above-mentioned PLC internal processes, shows result after the PLC internal processes is carried out simultaneously.
Being provided with examination lamp switch, PLC storage inside on the described PLC has examination lamp program, and after the examination lamp switch closure, PLC sends to the everything pilot lamp by the output interface that is used to indicate the switch motion situation and lights signal, the hardware system of test action pilot lamp.
The program that the tripping operation outlet of the promising protective device of described PLC storage inside and action indicator arrange numbering, PLC is by above-mentioned each way switch numbering of man-machine interface input, man-machine interface by serial ports with data transmission to the PLC flash memory.
Described PLC storage inside has relay protection Tripping matrix testing software, starts software by man-machine interface:
At first, the operating switch interface is judged the duty of relay-protection tester, and relay-protection tester sends down pulse and then enters next step program, otherwise returns previous step;
Secondly, PLC sends working signal, beginning timing to internal timer, and time status is presented on the man-machine interface;
Then; gather the hardware number order of input interface and the output interface that is used to indicate the switch motion situation of switch motion situation according to every group of corresponding being used for; successively the tripping operation outlet contact of protective device is tested; if the action of tripping operation outlet contact, then drive corresponding action indicator and light, and test result is presented on the man-machine interface.
Be provided with the involution switch on the described PLC, storage inside has involution software, behind the involution switch closure, PLC sends black out signal by the output interface that is used to indicate the switch motion situation to the everything pilot lamp, man-machine interface is returned original state.
Described man-machine interface is the device by the touch-screen input and output.
The beneficial effect that the present invention produces is:
Relay protection Tripping matrix test macro of the present invention; all tripping operation outlet loops of protective device are accessed on this test macro; only need the various faults of simulation; action situation and the actuation time that just can on pilot lamp and touch-screen, show intuitively each outlet; simplified debug process; shorten debug time, improved work on the spot efficient.Relay protection Tripping matrix test macro of the present invention; can not only record the action situation of each outlet; can also operation of recording the relative time (being accurate to 1ms actuation time) of outlet; even can also preset switch number corresponding to each way outlet, on touch-screen, just can directly show action situation, the actuation time of each switch after each experiment.After using this test macro, only need disposable wiring, every kind of protection only need once be simulated malfunction test, just can and display intuitively actuation time each switch motion situation under this fault.
The function ratio of function of the present invention and present existing transformer tripping matrix check device is similar, but have difference, and function horn of plenty more.The first, transformer tripping matrix check device is mainly realized the detection of Tripping matrix by hardware, easily because hardware error causes the test result error, even may cause test result incorrect; And the main function of the present invention is realized by software, utilizes powerful programmable logic controller (PLC) to finish the function of various more horn of plenties, and the self-check of device ability is strong, and hardware interface is abundant, and function expansibility is strong.Second, the present invention has been equipped with friendly man-machine interface, can the switch number that test macro connects corresponding outlet be set at touch-screen, make the result more directly perceived, for example each the switch trip logic (comprising whether tripping and the trip time) during fault can show on touch-screen very intuitively, even can the expanding printing function of reporting.The 3rd, the tripping operation exit lighting that device is equipped with, then can when each test, indicate each discharge state (band keeps), for some occasions that only needs the test outlet whether to move, then can check more easily exit lighting, in order to prevent that because hardware damage causes erroneous judgement disconnected, the present invention also is provided with examination lamp program, for detection of the correctness of tripping operation exit lighting hardware unit.
Description of drawings
Fig. 1 is the hardware principle synoptic diagram of relay protection Tripping matrix test macro of the present invention;
Fig. 2 is the program circuit synoptic diagram of relay protection Tripping matrix test macro of the present invention.
Embodiment
As shown in Figure 1, 2, the invention provides a kind of relay protection Tripping matrix test macro, the of ac output terminal of relay-protection tester connects the of ac input end of protective device.The below illustrates respectively concrete technical scheme of the present invention with hardware unit and software approach:
(1) hardware unit:
Relay protection Tripping matrix test macro of the present invention comprises PLC, action indicator and man-machine interface, and hardware connects very simple, and fundamental block diagram as shown in Figure 1.
Be provided with several switch value input interface and several switching value output interfaces on the PLC, wherein: have an operating switch interface to connect the down pulse output terminal of relay-protection tester, relay-protection tester sends failure pulse signal to PLC.There are several input interfaces that are used to gather the switch motion situation and several to be used to indicate the output interface of switch motion situation; both quantity is identical; each input interface that be used for to gather the switch motion situation connects a tripping operation outlet of protective device, output interface that each is used to indicate the switch motion situation connects an action indicator, and action indicator and the tripping operation of protective device export corresponding and its hardware number is identical one by one.In addition, also have three switch value input interface, be respectively applied to start timing, involution and examination lamp, be referred to as time switch, involution switch and examination lamp switch.
The PLC storage inside has the logic instruction of program, executive routine, can finish various logic functions, comprises examination lamp program, switch number loading routine, test procedure, involution program etc.The PLC internal processes receives the actuating signal of the tripping operation outlet contact of protective device by above-mentioned input interface for gathering the switch motion situation; if the action of tripping operation outlet contact, then send to action indicator by the output interface that is used to indicate the switch motion situation and to light signal; simultaneously, the action situation and the actuation time that show this way switch in man-machine interface.
PLC connects man-machine interface by communication serial port, sets and revises the parameter of above-mentioned PLC internal processes, shows result after the PLC internal processes is carried out simultaneously.In this embodiment, man-machine interface is the device by the touch-screen input and output.Transmit data by serial ports between PLC device and the touch-screen input-output unit, the touch-screen input-output unit is finished as a result function of switch number setting (transfer in the PLC flash memory by serial ports, data are not lost in power down) and display action.
In addition: above-mentioned all PLC switch value input interface (be the operating switch interface, be used for gathering the input interface of switch motion situation etc.) is used for gathering each road tripping operation outlet contact that fault timing contact, slot signal, examination modulating signal and protective device are left, and the intake power supply is 24V.Above-mentioned PLC switching value output interface (namely being used to indicate the output interface of switch motion situation) is used for lighting each road tripping operation outlet indication LED lamp, and the power supply that connects is 24V.
(2) software approach:
All functions of the present invention all are to realize by program, and core technology is the PLC internal processes and sets and revise the parameter of above-mentioned PLC internal processes, shows result after the PLC internal processes is carried out simultaneously by the touch-screen input-output unit.
Being provided with examination lamp switch, PLC storage inside on the PLC has examination lamp program, and after the examination lamp switch closure, PLC sends to the everything pilot lamp by the output interface that is used to indicate the switch motion situation and lights signal, and whether the hardware system of test action pilot lamp is normal.
The program that the tripping operation outlet of the promising protective device of PLC storage inside and action indicator arrange numbering is inputted each way switch numbering by touch-screen, touch-screen by serial ports with data transmission to the PLC flash memory, do not lose to realize power failure data.
The PLC storage inside has relay protection Tripping matrix testing software, and this is gordian technique of the present invention, behind man-machine interface startup software:
At first, the operating switch interface is judged the duty of relay-protection tester, and relay-protection tester sends down pulse, then enters next step program, otherwise returns previous step;
Secondly, PLC sends working signal, beginning timing to internal timer, and time status is presented on the man-machine interface;
Then; according to every group corresponding be used for the output interface that gathers the input interface of switch motion situation and be used to indicate the switch motion situation the hardware number order; successively the tripping operation outlet contact of protective device is tested; if the action of tripping operation outlet contact, then drive corresponding action indicator and light, and test result (comprising action situation and relative actuation time) is presented on the man-machine interface.
Be provided with the involution switch on the PLC, storage inside has involution software, behind the involution switch closure, PLC sends black out signal by the output interface that is used to indicate the switch motion situation to the everything pilot lamp, man-machine interface is returned original state.
The present invention realizes by following steps the process of relay protection Tripping matrix test, shown in the software flow pattern of Fig. 2:
1. wiring: the contact of leaving of relay-protection tester is accessed Tripping matrix test macro (needing during simulated failure this contact is left connection in order to start the timing of Tripping matrix test macro); The tripping operation outlet contact access Tripping matrix test macro that all need to be tested with protective device again;
2. start: start enters welcomes the interface, shows simultaneously the current time, clicks " entering system " and switches to test interface;
3. switch number is set: (data are kept in the FLASH chip of PLC the switch number when each way switch numbering of current demonstration is defaulted as last test, power down does not disappear), as need not to change and can directly test, if just need change to click the resettable switch number that needs change of " set " button;
4. examination lamp: damage for fear of light emitting diode, cause the Tripping matrix false judgment, need to before test, test in the hardware indication loop to device.Concrete grammar is the examination button of pressing the touch-screen below, all tripping operation outlet indication diode Ying Liang, and after unclamping, all indication diodes extinguish.
5. Tripping matrix test: drop into the output clamping that trips on the protection screen, use the relay-protection tester simulated failure.After the protection action, just can obtain at touch-screen action situation and the actuation time of each switch.Behind the log, clear data by " involution " button, just can enter next time test.
Claims (6)
1. relay protection Tripping matrix test macro, the of ac output terminal of described relay-protection tester connects the of ac input end of protective device, and it is characterized in that: described relay protection Tripping matrix test macro comprises PLC, action indicator and man-machine interface;
PLC is by the down pulse output terminal of operating switch interface connection relay-protection tester, and relay-protection tester sends failure pulse signal to PLC;
Be provided with output interface that several input interfaces that be used for to gather the switch motion situation and several are used to indicate the switch motion situation on the PLC, both quantity is identical, each input interface that be used for to gather the switch motion situation connects a tripping operation outlet of protective device, output interface that each is used to indicate the switch motion situation connects an action indicator, and action indicator and the tripping operation of protective device export corresponding and hardware number is identical one by one;
The PLC storage inside has the logic instruction of program, executive routine, receive the actuating signal of the tripping operation outlet contact of protective device by above-mentioned input interface for gathering the switch motion situation, if the action of tripping operation outlet contact, then send to action indicator by the output interface that is used to indicate the switch motion situation and to light signal;
PLC connects man-machine interface by communication serial port, sets and revises the parameter of above-mentioned PLC internal processes, shows result after the PLC internal processes is carried out simultaneously.
2. relay protection Tripping matrix test macro according to claim 1; it is characterized in that: being provided with examination lamp switch, PLC storage inside on the described PLC has examination lamp program; after the examination lamp switch closure; PLC sends to the everything pilot lamp by the output interface that is used to indicate the switch motion situation and lights signal, the hardware system of test action pilot lamp.
3. relay protection Tripping matrix test macro according to claim 1; it is characterized in that: the program that the tripping operation outlet of the promising protective device of described PLC storage inside and action indicator arrange numbering; PLC is by above-mentioned each way switch numbering of man-machine interface input, man-machine interface by serial ports with data transmission to the PLC flash memory.
4. according to claim 1 or 3 described relay protection Tripping matrix test macros, it is characterized in that: described PLC storage inside has relay protection Tripping matrix testing software, starts software by man-machine interface:
At first, the operating switch interface is judged the duty of relay-protection tester, and relay-protection tester sends down pulse and then enters next step program, otherwise returns previous step;
Secondly, PLC sends working signal, beginning timing to internal timer, and time status is presented on the man-machine interface;
Then; gather the hardware number order of input interface and the output interface that is used to indicate the switch motion situation of switch motion situation according to every group of corresponding being used for; successively the tripping operation outlet contact of protective device is tested; if the action of tripping operation outlet contact, then drive corresponding action indicator and light, and test result is presented on the man-machine interface.
5. relay protection Tripping matrix test macro according to claim 1; it is characterized in that: be provided with the involution switch on the described PLC, storage inside has involution software; behind the involution switch closure; PLC sends black out signal by the output interface that is used to indicate the switch motion situation to the everything pilot lamp, and man-machine interface is returned original state.
6. relay protection Tripping matrix test macro according to claim 1, it is characterized in that: described man-machine interface is the device by the touch-screen input and output.
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| CN2012104380316A CN102928717A (en) | 2012-11-06 | 2012-11-06 | Relay protection tripping matrix test system |
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| CN2012104380316A CN102928717A (en) | 2012-11-06 | 2012-11-06 | Relay protection tripping matrix test system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353556A (en) * | 2013-06-06 | 2013-10-16 | 国家电网公司 | Relay protection device pressboard outlet logic detection apparatus |
| CN103399217A (en) * | 2013-06-13 | 2013-11-20 | 国家电网公司 | Method seeking reason for mis-trip of secondary switch of B-phase grounded TV due to operation interference |
| CN103823198A (en) * | 2014-02-28 | 2014-05-28 | 国家电网公司 | Relay protection testing device time measurement accuracy degree detection system and method |
| CN104407244A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Main transformer tripping matrix testing system |
| CN107064693A (en) * | 2017-05-25 | 2017-08-18 | 贵州电网有限责任公司电力科学研究院 | A kind of protective relaying device outlet matrix test device and test method |
| CN108594049A (en) * | 2018-06-23 | 2018-09-28 | 华电电力科学研究院有限公司 | A kind of relay protection outlet logic fast verification method and dedicated testing wire |
| CN108680819A (en) * | 2018-05-24 | 2018-10-19 | 国网河南省电力公司检修公司 | A kind of change of current becomes protection exit circuit and matrix test method |
| CN110286274A (en) * | 2019-05-21 | 2019-09-27 | 贵州电网有限责任公司 | A kind of relay protection tripping outlet matrix fast verification device |
| CN111856191A (en) * | 2020-07-31 | 2020-10-30 | 国网山东省电力公司鄄城县供电公司 | Protection device test box and protection device test system |
| CN112327083A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
| CN112731125A (en) * | 2020-12-03 | 2021-04-30 | 广东电网有限责任公司 | System and method for detecting action exit time of protection device |
| CN113533886A (en) * | 2021-07-20 | 2021-10-22 | 许继集团有限公司 | Method and device for testing opening-in and opening-out reliability of relay protection device |
| CN114966283A (en) * | 2022-05-27 | 2022-08-30 | 国网河北省电力有限公司超高压分公司 | Intelligent protection logic and outlet matrix one-key test method |
| CN115327366A (en) * | 2022-08-25 | 2022-11-11 | 国网天津市电力公司 | Secondary equipment export action monitoring devices |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1403144A1 (en) * | 1985-12-03 | 1988-06-15 | В.К.Бибикман | Matrix switching device |
| US20030200483A1 (en) * | 2002-04-23 | 2003-10-23 | Sutton Christopher K. | Electronic test program that can distinguish results |
| CN101207280A (en) * | 2007-11-30 | 2008-06-25 | 上海市电力公司超高压输变电公司 | Method and device of intelligent calibration for power system relay protection |
| CN201594764U (en) * | 2009-12-30 | 2010-09-29 | 中国西电电气股份有限公司 | Configurable trigger matrix device for tripping output of controller |
| CN202166698U (en) * | 2011-04-29 | 2012-03-14 | 华北电网有限公司北京超高压公司 | Transformer protection matrix test device |
| CN202171628U (en) * | 2011-08-15 | 2012-03-21 | 北京送变电公司 | Protection trip matrix testing device for transformer |
-
2012
- 2012-11-06 CN CN2012104380316A patent/CN102928717A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1403144A1 (en) * | 1985-12-03 | 1988-06-15 | В.К.Бибикман | Matrix switching device |
| US20030200483A1 (en) * | 2002-04-23 | 2003-10-23 | Sutton Christopher K. | Electronic test program that can distinguish results |
| CN101207280A (en) * | 2007-11-30 | 2008-06-25 | 上海市电力公司超高压输变电公司 | Method and device of intelligent calibration for power system relay protection |
| CN201594764U (en) * | 2009-12-30 | 2010-09-29 | 中国西电电气股份有限公司 | Configurable trigger matrix device for tripping output of controller |
| CN202166698U (en) * | 2011-04-29 | 2012-03-14 | 华北电网有限公司北京超高压公司 | Transformer protection matrix test device |
| CN202171628U (en) * | 2011-08-15 | 2012-03-21 | 北京送变电公司 | Protection trip matrix testing device for transformer |
Cited By (21)
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| CN103353556B (en) * | 2013-06-06 | 2016-12-28 | 国家电网公司 | Protective relaying device pressing plate outlet logic detection device |
| CN103353556A (en) * | 2013-06-06 | 2013-10-16 | 国家电网公司 | Relay protection device pressboard outlet logic detection apparatus |
| CN103399217A (en) * | 2013-06-13 | 2013-11-20 | 国家电网公司 | Method seeking reason for mis-trip of secondary switch of B-phase grounded TV due to operation interference |
| CN103399217B (en) * | 2013-06-13 | 2015-07-15 | 国家电网公司 | Method seeking reason for mis-trip of secondary switch of B-phase grounded TV due to operation interference |
| CN103823198A (en) * | 2014-02-28 | 2014-05-28 | 国家电网公司 | Relay protection testing device time measurement accuracy degree detection system and method |
| CN103823198B (en) * | 2014-02-28 | 2016-08-17 | 国家电网公司 | Relay-protection tester measure of time accuracy detecting system and detection method |
| CN104407244A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Main transformer tripping matrix testing system |
| CN104407244B (en) * | 2014-11-21 | 2024-04-09 | 国家电网公司 | Main Transformer Tripping Matrix Test System |
| CN107064693B (en) * | 2017-05-25 | 2023-06-16 | 贵州电网有限责任公司电力科学研究院 | Relay protection device outlet matrix test device and test method |
| CN107064693A (en) * | 2017-05-25 | 2017-08-18 | 贵州电网有限责任公司电力科学研究院 | A kind of protective relaying device outlet matrix test device and test method |
| CN108680819A (en) * | 2018-05-24 | 2018-10-19 | 国网河南省电力公司检修公司 | A kind of change of current becomes protection exit circuit and matrix test method |
| CN108594049A (en) * | 2018-06-23 | 2018-09-28 | 华电电力科学研究院有限公司 | A kind of relay protection outlet logic fast verification method and dedicated testing wire |
| CN110286274A (en) * | 2019-05-21 | 2019-09-27 | 贵州电网有限责任公司 | A kind of relay protection tripping outlet matrix fast verification device |
| CN111856191A (en) * | 2020-07-31 | 2020-10-30 | 国网山东省电力公司鄄城县供电公司 | Protection device test box and protection device test system |
| CN112327083B (en) * | 2020-10-31 | 2022-08-26 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
| CN112327083A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
| CN112731125A (en) * | 2020-12-03 | 2021-04-30 | 广东电网有限责任公司 | System and method for detecting action exit time of protection device |
| CN113533886A (en) * | 2021-07-20 | 2021-10-22 | 许继集团有限公司 | Method and device for testing opening-in and opening-out reliability of relay protection device |
| 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 |
| CN114966283A (en) * | 2022-05-27 | 2022-08-30 | 国网河北省电力有限公司超高压分公司 | Intelligent protection logic and outlet matrix one-key test method |
| CN115327366A (en) * | 2022-08-25 | 2022-11-11 | 国网天津市电力公司 | Secondary equipment export action monitoring devices |
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Application publication date: 20130213 |