CN104237603A - Pulse voltage detecting device for multiple outlet pressing boards of relay protection - Google Patents
Pulse voltage detecting device for multiple outlet pressing boards of relay protection Download PDFInfo
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- CN104237603A CN104237603A CN201410430709.5A CN201410430709A CN104237603A CN 104237603 A CN104237603 A CN 104237603A CN 201410430709 A CN201410430709 A CN 201410430709A CN 104237603 A CN104237603 A CN 104237603A
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Abstract
The invention provides a pulse voltage detecting device for multiple outlet pressing boards of relay protection. The pulse voltage detecting device comprises a power module, pulse voltage interface modules, a reference voltage adjusting module, a pulse voltage magnitude comparing module, pulse detection memory display modules, a function testing module, a reset module and a timing module. By the adoption of the pulse voltage detecting device for pulse voltage detecting device for the multiple relay protection outlet pressing boards, the pulse voltages, existing when outlets act, of all the outlet pressing boards of a multiple-outlet secondary device are converted into LED lamp normally on display, the function that each testing loop can conduct self-detection is achieved, the action time of the protection outlets can be measured, the time of outlet testing of the multiple-outlet secondary device can be greatly shortened, the accuracy of testing can be improved, and the number of testing personnel can be reduced.
Description
Technical field
The present invention relates to technical field of electric power, particularly relate to a kind of relay protection multi-way outlet pressing plate pulse voltage pick-up unit.
Background technology
In electric system the secondary device of relay protection professional to multiple outlet such as protective relaying device, safety automation debug, regular inspection time, the correctness of all outlet ports action need be tested under same logic.At present, conventional method of testing uses the shelves of direct voltage of multimeter to test output clamping.This relay protection multi-way outlet pressing plate pulse voltage detecting instrument and method have following drawback: 1. use multimeter can only test an outlet at every turn, test the correctness of each outlet, just need repeatedly to test under each logic, consume the plenty of time, efficiency is low; 2. during secondary device action, the potential pulse that output clamping exports is held time shorter, uses multimeter may have little time to react the change of outlet potential pulse, causes test inaccurate; 3. when using multimeter test, need a tester to squat before protection screen, do not stop to change test test pencil according to test request, and need multimeter be dig-inned, waste of manpower.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of relay protection multi-way outlet pressing plate pulse voltage pick-up unit, this device is provided with multiple pulse voltage interface module, and with pulse voltage interface module one to one multiple pulse detection remember display module, each pulse voltage interface module can connect output clamping or a potential pulse output port of a secondary device, after some pulse voltage interface modules receive effective pulse signal, the pulse detection corresponding with this pulse voltage interface module is remembered display module and will be lit, therefore relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention can test multiple output clamping simultaneously, shorten the time of multiple exit secondary device outlet test, improve the accuracy of test, reduce testing crew quantity.
Relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention comprises: at least one pulse voltage interface module, and with described pulse voltage interface module one to one pulse detection remember display module, and reference voltage adjustment module, pulse voltage amplitude comparison module;
Described pulse voltage interface module, for receiving the pulse signal that output clamping exports, and adjusted to by the voltage magnitude of this pulse signal can in process range;
Described reference voltage adjustment module, for providing reference voltage and adjusting the amplitude of described reference voltage;
The input end of described pulse voltage amplitude comparison module is connected with described pulse voltage interface module and described reference voltage adjustment module respectively, compares for the reference voltage pulse signal voltage after described pulse voltage interface module adjustment and described reference voltage adjustment module provided; When the pulse signal voltage after adjusting is more than or equal to reference voltage, judge that this pulse signal is effective, and drive the pulse detection corresponding with the described pulse signal of reception to remember display module to light its display section; When the pulse signal voltage after adjusting is less than reference voltage, judge that this pulse signal is invalid;
Described pulse detection memory display module is connected with the output terminal of described pulse voltage amplitude comparison module, drives display section for the result of determination according to described detection pulse voltage amplitude comparison module; If described detection pulse voltage amplitude comparison module judges that this pulse signal is effective, then described pulse detection memory display module drives display section to keep display state; If described detection pulse voltage amplitude comparison module judges that this pulse signal is invalid, then described pulse detection memory display module does not drive display section.
Wherein, described device also comprises: timing module; Timing module and described pulse detection are remembered display module and are connected, for recording from input clocked command to the selected time needing the output clamping of timing to occur pulse.
Wherein, described device also comprises: involution module; Involution module and described pulse detection are remembered display module and are connected, and detect the content of the current recall info of memory display module and display for reset pulse.
Wherein, described device also comprises: power module, for powering for the modules of described device.
Wherein, the voltage magnitude of this pulse signal is adjusted to by described pulse voltage interface module can process range be 0 to 5V.
Wherein, when described pulse voltage amplitude comparison module judges that this pulse signal is effective, export high level; When described pulse voltage amplitude comparison module judges that this pulse signal is invalid, output low level.
Wherein, described display section is LED; The output of described pulse detection memory display module received pulse voltage magnitude comparison module, when described pulse voltage amplitude comparison module exports high level, pulse detection memory display module driving LED lamp is lighted, and keeps display state.
Wherein, described device also comprises: functional test module; Functional test module is connected with described pulse voltage interface module; for testing the integrity in loop in described relay protection multi-way outlet pressing plate pulse voltage pick-up unit; in test, functional test module exports effective pulse signal; the corresponding LED in the loop making test loop intact is lighted and keeps, and in test loop, the corresponding LED in out of order loop keeps OFF state.
Wherein, the range of adjustment of described reference voltage adjustment module to reference voltage is 0 to 220V.
Wherein, described reference voltage adjustment module is also for showing current reference voltage.
Relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention, this device is provided with multiple pulse voltage interface module, and with pulse voltage interface module one to one multiple pulse detection remember display module, each pulse voltage interface module can connect output clamping or a potential pulse output port of a secondary device, after some pulse voltage interface modules receive effective pulse signal, the pulse detection corresponding with this pulse voltage interface module is remembered display module and will be lit, therefore relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention can test multiple output clamping simultaneously.Further; relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention possesses each test loop self-checking function; actuation time can be exported by measuring and protecting simultaneously, use this relay protection multi-way outlet pressing plate pulse voltage pick-up unit greatly can shorten the time of multiple exit secondary device outlet test, the accuracy improving test, minimizing testing crew quantity.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the use wiring schematic diagram of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention;
Fig. 2 is the structural representation of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention;
Fig. 3 is the circuit theory diagrams of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention.
Embodiment
Relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention, this device is provided with multiple pulse voltage interface module, and with pulse voltage interface module one to one multiple pulse detection remember display module, each pulse voltage interface module can connect output clamping or a potential pulse output port of a secondary device, after some pulse voltage interface modules receive effective pulse signal, the pulse detection corresponding with this pulse voltage interface module is remembered display module and will be lit, therefore relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention can test multiple output clamping simultaneously.Further; relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention possesses each test loop self-checking function; actuation time can be exported by measuring and protecting simultaneously, use this relay protection multi-way outlet pressing plate pulse voltage pick-up unit greatly can shorten the time of multiple exit secondary device outlet test, the accuracy improving test, minimizing testing crew quantity.
See Fig. 1, it is the use wiring schematic diagram of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention.LP1, LP2 ... LPn is n output clamping, and n selectes according to the actual output clamping number of secondary device.During use, through n bar p-wire, by n output clamping lower end access relay protection multi-way outlet pressing plate pulse voltage pick-up unit (actual is n the pulse voltage interface module accessing relay protection multi-way outlet pressing plate pulse voltage pick-up unit respectively).The earth terminal of the multi-way outlet of relay protection simultaneously pressing plate pulse voltage pick-up unit and the earth terminal short circuit of output clamping power supply.In outlet testing experiment, if pulse has appearred in pressing plate lower end, then the LED display lamp that on relay protection multi-way outlet pressing plate pulse voltage pick-up unit, (pulse detection memory display module) is corresponding has been lit, and keeps normal bright state.
See Fig. 2, it is the structural representation of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention.A kind of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention comprises:
At least one pulse voltage interface module 1, and with described pulse voltage interface module one to one pulse detection remember display module 4, and reference voltage adjustment module 2, pulse voltage amplitude comparison module 3;
The pulse signal that described pulse voltage interface module 1 exports for receiving output clamping, and adjusted to by the voltage magnitude of this pulse signal can in process range; More specifically, the voltage magnitude of this pulse signal is adjusted to by described pulse voltage interface module 1 can process range be 0 to 5V.
Described reference voltage adjustment module 2, for providing reference voltage and adjusting the amplitude of described reference voltage; More specifically, the range of adjustment of described reference voltage adjustment module to reference voltage is 0 to 220V, and described reference voltage adjustment module can also show current reference voltage value.
The input end of described pulse voltage amplitude comparison module 3 is connected with described pulse voltage interface module 1 and described reference voltage adjustment module 2 respectively, and the reference voltage provided for the pulse signal voltage after described pulse voltage interface module 1 being adjusted and described reference voltage adjustment module 2 compares; When the pulse signal voltage after adjusting is more than or equal to reference voltage, judge that this pulse signal is effective, output high level drives the pulse detection corresponding with receiving described pulse signal to remember display module 4 and lights its display section; When the pulse signal voltage after adjusting is less than reference voltage, judges that this rushes invalidating signal, output low level, the pulse detection corresponding with receiving described pulse signal can not being driven to remember display module 4;
Described pulse detection memory display module 4 is connected with the output terminal of described pulse voltage amplitude comparison module 3, drives display section for the result of determination according to described pulse voltage amplitude comparison module 3; If described detection pulse voltage amplitude comparison module judges that this pulse signal is effective, then described pulse detection memory display module drives display section to keep display state; If described detection pulse voltage amplitude comparison module judges that this pulse signal is invalid, then described pulse detection memory display module 4 does not drive display section.More specifically, described display section can be LED; The output of described pulse detection memory display module 4 received pulse voltage magnitude comparison module 3, when described pulse voltage amplitude comparison module 3 judges that pulse signal is effective, export high level, driving pulse detects memory display module 4 lightening LED lamp, and keeps display state.
It will be understood by those skilled in the art that; original intention of the present invention facilitates the output pulse of staff to multiple output clamping to detect, thus should comprise in a relay protection multi-way outlet pressing plate pulse voltage pick-up unit multiple pulse voltage interface module 1 and with pulse voltage interface module 1 one to one driving pulse detect and remember display module 4.Pulse voltage amplitude comparison module 3 then should select quantity according to concrete function, if a pulse voltage amplitude comparison module 3 can compare many group input signals simultaneously, then the quantity of pulse voltage amplitude comparison module 3 can be fewer than pulse voltage interface module 1; If a pulse voltage amplitude comparison module 3 can only compare by one group of input signal, then the quantity of pulse voltage amplitude comparison module 3 should be identical with pulse voltage interface module 1.Reference voltage adjustment module 2 in device can only have one, and its output terminal is connected with the input end of each pulse voltage amplitude comparison module 3 in device respectively.
Further, the relay protection multi-way outlet pressing plate pulse voltage pick-up unit that the embodiment of the present invention provides can also comprise in functional test module 5, involution module 6, timing module 7 and power module 8 one or several.
Functional test module 5; Functional test module 5 is connected with described pulse voltage interface module 1; for testing the integrity in loop in described relay protection multi-way outlet pressing plate pulse voltage pick-up unit; in test, functional test module exports effective pulse signal; the corresponding LED in the loop making test loop intact is lighted and keeps, and in test loop, the corresponding LED in out of order loop keeps OFF state.Involution module 6; Involution module 6 and described pulse detection are remembered display module 4 and are connected, and detect the content of the current recall info of memory display module 6 and display for reset pulse.Timing module 7; Timing module 7 is connected with described pulse voltage interface module 1, for recording from input clocked command to the selected time needing the output clamping output pulse signal of timing.Power module 8, for powering for modules.
See Fig. 3, be the circuit theory diagrams of relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention.It will be appreciated by persons skilled in the art that the physical circuit that the present embodiment provides is a kind of concrete implementation, the distortion of part or all of circuit or equivalent replacement also belong to the protection domain of application claims.For describing succinct and facilitating public understanding, the present embodiment is described for the measuring circuit pressing plate of first pressing plate LP1.In the relay protection multi-way outlet pressing plate pulse voltage pick-up unit of reality, the partial circuit of Fig. 3 dotted line has many groups side by side, often organizes the pulse signal of a process output clamping.
As shown in Figure 3, when there is a potential pulse LP1 lower end, the pulse voltage interface module of this device is input to through p-wire 301, after divider resistance 302,304 dividing potential drop in pulse voltage interface module, the voltage that pulse voltage is converted to 0 ~ 5V by pulse voltage interface module enters pulse voltage amplitude comparison module (i.e. the positive input terminal of voltage comparator 308) through wire 303, the negative input end of voltage comparator 308 is that the output voltage 307,307 of reference voltage adjustment module regulates by the potentiometer 306 in reference voltage adjustment module.Before LP1 pulse voltage arrives, 308 is zero, be less than 307, the output voltage 310 of voltage comparator keeps low level (being 0), when LP1 pulse voltage arrives, if 308 voltages exceed reference voltage 307, the output voltage of voltage comparator becomes the operating voltage VDD of chip from 0, the change procedure of this rising, the output 313 of the trigger 312 that pulse detection is remembered in display module becomes VDD from 0, VDD makes pulse detection remember display section LED pipe 315 luminescence of display module through the divider resistance 314 of pulse detection memory display module, and LED pipe 315 remains on luminance, be convenient to observe.
Further, when after the involution button 309 pressing involution module, trigger 312 receives involution order, makes the output 313 of trigger 312 become low level from high level, and LED pipe is extinguished.
For testing the integrity in each loop, can press the testing button 305 in functional test module, sending functional test order, if loop is intact, then corresponding LED pipe is lighted, if having fault in test loop, then corresponding LED pipe keeps OFF state.
The output of trigger 312 accesses timing module through timing selector switch 316, when this loop needs timing, and switch corresponding in corresponding selection of closing switch 316; When this loop does not need timing, disconnect switch corresponding in selector switch 316.If have multiple loop all to choose need timing simultaneously, then the actuation time in a timing module loop that operation of recording is the fastest.Open into sky node 321 for timing initiation command open into, open and can connect from test instrument into sky node 321, also can connect the action connection point of self-protecting device.Open when closing into sky node 321, the pulse producer 317 of timing module starts the pulse producing certain frequency continuously, the counter 318 of timing module carries out timing according to the pulse received, and timing result is inputed to the charactron driving chip 319 of timing module, Nixie tube drive circuit 319 again driving LED charactron 320 shows the time of recording, when having pulse in the pulse detection loop of selected timing, export timing pause TP order time out through selector switch 316.When there being the selected timing of multiplex pulse measure loop, a timing loop recording impulse arrives time of measure loop the earliest.Before next time, test needed timing, press time involution button, the time involution shown by LED charactron 320 is 0.
Relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention, this device is provided with multiple pulse voltage interface module, and with pulse voltage interface module one to one multiple pulse detection remember display module, each pulse voltage interface module can connect output clamping or a potential pulse output port of a secondary device, after some pulse voltage interface modules receive effective pulse signal, the pulse detection corresponding with this pulse voltage interface module is remembered display module and will be lit, therefore relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention can test multiple output clamping simultaneously.Further; relay protection multi-way outlet pressing plate pulse voltage pick-up unit provided by the invention possesses each test loop self-checking function; actuation time can be exported by measuring and protecting simultaneously, use this relay protection multi-way outlet pressing plate pulse voltage pick-up unit greatly can shorten the time of multiple exit secondary device outlet test, the accuracy improving test, minimizing testing crew quantity.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a relay protection multi-way outlet pressing plate pulse voltage pick-up unit, it is characterized in that, described device comprises: at least one pulse voltage interface module, and with described pulse voltage interface module one to one pulse detection remember display module, and reference voltage adjustment module, pulse voltage amplitude comparison module;
Described pulse voltage interface module, for receiving the pulse signal that output clamping exports, and adjusted to by the voltage magnitude of this pulse signal can in process range;
Described reference voltage adjustment module, for providing reference voltage and adjusting the amplitude of described reference voltage;
The input end of described pulse voltage amplitude comparison module is connected with described pulse voltage interface module and described reference voltage adjustment module respectively, compares for the reference voltage pulse signal voltage after described pulse voltage interface module adjustment and described reference voltage adjustment module provided; When the pulse signal voltage after adjusting is more than or equal to reference voltage, judge that this pulse signal is effective, and drive the pulse detection corresponding with the described pulse signal of reception to remember display module to light its display section; When the pulse signal voltage after adjusting is less than reference voltage, judge that this pulse signal is invalid;
Described pulse detection memory display module is connected with the output terminal of described pulse voltage amplitude comparison module, drives display section for the result of determination according to described detection pulse voltage amplitude comparison module; If described detection pulse voltage amplitude comparison module judges that this pulse signal is effective, then described pulse detection memory display module drives display section to keep display state; If described detection pulse voltage amplitude comparison module judges that this pulse signal is invalid, then described pulse detection memory display module does not drive display section.
2. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 1, it is characterized in that, described device also comprises: timing module; Timing module is connected with described pulse voltage interface module, for recording from input clocked command to the selected time needing the output clamping of timing to occur pulse.
3. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 1, it is characterized in that, described device also comprises: involution module; Involution module and described pulse detection are remembered display module and are connected, and detect the content of the current recall info of memory display module and display for reset pulse.
4. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 1, it is characterized in that, described device also comprises: power module, for powering for the modules of described device.
5. the relay protection multi-way outlet pressing plate pulse voltage pick-up unit according to any one of Claims 1-4, is characterized in that, it can process range be 0 to 5V that the voltage magnitude of this pulse signal is adjusted to by described pulse voltage interface module.
6. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 5, is characterized in that, when described pulse voltage amplitude comparison module judges that this pulse signal is effective, exports high level; When described pulse voltage amplitude comparison module judges that this pulse signal is invalid, output low level.
7. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 6, it is characterized in that, described display section is LED;
The output of described pulse detection memory display module received pulse voltage magnitude comparison module, high level is exported when described pulse voltage amplitude comparison module judges that pulse signal is effective, driving pulse detects memory display module lightening LED lamp, and keeps display state.
8. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 7, it is characterized in that, described device also comprises: functional test module; Functional test module is connected with described pulse voltage interface module; for testing the integrity in loop in described relay protection multi-way outlet pressing plate pulse voltage pick-up unit; in test, functional test module exports effective pulse signal; the corresponding LED in the loop making test loop intact is lighted and keeps, and in test loop, the corresponding LED in out of order loop keeps OFF state.
9. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 8, it is characterized in that, the range of adjustment of described reference voltage adjustment module to reference voltage is 0 to 220V.
10. relay protection multi-way outlet pressing plate pulse voltage pick-up unit as claimed in claim 8, it is characterized in that, described reference voltage adjustment module is also for showing current reference voltage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410430709.5A CN104237603A (en) | 2014-08-28 | 2014-08-28 | Pulse voltage detecting device for multiple outlet pressing boards of relay protection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410430709.5A CN104237603A (en) | 2014-08-28 | 2014-08-28 | Pulse voltage detecting device for multiple outlet pressing boards of relay protection |
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Cited By (7)
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| CN106841876A (en) * | 2017-03-27 | 2017-06-13 | 国网福建省电力有限公司 | A kind of monitoring method of relay protection outlet pressing plate |
| CN108896817A (en) * | 2018-09-21 | 2018-11-27 | 广东电网有限责任公司 | Relay equipment output clamping potential test device with data recording function |
| CN108982946A (en) * | 2018-04-28 | 2018-12-11 | 深圳供电局有限公司 | A kind of platen potential change detecting device based on protection act contact |
| CN110488083A (en) * | 2019-08-16 | 2019-11-22 | 国网安徽省电力有限公司滁州供电公司 | A kind of relay protection outlet pressing plate pulse voltage detection device, method and circuit |
| CN110824352A (en) * | 2019-11-28 | 2020-02-21 | 国网四川省电力公司攀枝花供电公司 | Relay protection logic checking device |
| CN114217155A (en) * | 2021-12-14 | 2022-03-22 | 广东电网有限责任公司 | State detection circuit and terminal of secondary cell clamp plate in distribution network ring main unit |
| CN117110690A (en) * | 2023-10-23 | 2023-11-24 | 广东电网有限责任公司东莞供电局 | Intelligent substation pressure plate potential measurement method and system |
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| CN114217155A (en) * | 2021-12-14 | 2022-03-22 | 广东电网有限责任公司 | State detection circuit and terminal of secondary cell clamp plate in distribution network ring main unit |
| CN114217155B (en) * | 2021-12-14 | 2023-08-22 | 广东电网有限责任公司 | State detection circuit and terminal of secondary cell clamp plate in distribution network looped netowrk case |
| CN117110690A (en) * | 2023-10-23 | 2023-11-24 | 广东电网有限责任公司东莞供电局 | Intelligent substation pressure plate potential measurement method and system |
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Application publication date: 20141224 |
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