CN105388417A - Intelligent type relay protection outlet tester and test method - Google Patents
Intelligent type relay protection outlet tester and test method Download PDFInfo
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- CN105388417A CN105388417A CN201510896316.8A CN201510896316A CN105388417A CN 105388417 A CN105388417 A CN 105388417A CN 201510896316 A CN201510896316 A CN 201510896316A CN 105388417 A CN105388417 A CN 105388417A
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- relay protection
- acquisition module
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Abstract
The invention discloses an intelligent type relay protection outlet tester and a test method. The device comprises test lines, an outlet contact acquisition module, a micro control unit and a display screen; substation protection device outlet contacts, namely, tested systems, are sequentially with ports of 1 to 15 of the acquisition end of the outlet contact acquisition module through the test lines; the ports of 1 to 15 of the output end of the outlet contact acquisition module are correspondingly connected with I/O ports of the micro control unit; the micro control unit acquires the switching-in quantity of 1 to 15 paths, and performs computation on the switching-in quantity and uploads computation results to a display screen through serial communication; and the display screen displays the results periodically. With the device adopted, the action situations of as many as 15 sets of protection device outlet contacts can be measured simultaneously; as for multiple active or passive outlet contacts, the action time and lasting time of the outlet contacts can be measured at the same time, and the accuracy of the action logic of a protection device tripping outlet can be verified quickly and accurately for once.
Description
Technical field
The present invention relates to a kind of tester and method of testing of testing protective relaying device outlet contact action situation in electric system, belong to Relay Protection Technology in Power System field.
Background technology
The development of society requires more and more higher power supply reliability, and the protective relaying device action accuracy direct relation in electric system the stable of electrical network, more and more higher to the quality requirements of protective device examination, regular inspection thus.The checking of protective device tripping operation outlet action logic is in key link in protective device examination, regular inspection project.The test of traditional relay protection outlet contact: outlet current potential is measured in active outlet general-purpose change one by one, passive outlet is progressively tested by multimeter measurement outlet break-make or by relay-protection tester survey intake function after untiing secondary line.Classic method Measuring Time is long, and workload is large, can only indirect inspection partial act logic, and it is more and more higher that conventional test methodologies has been not enough to deal with requirement, the examination of the protective device of becoming increasingly complex of logic function, regular inspection work.
Summary of the invention
The present invention is just in order to overcome the intelligent relay protection outlet tester of one and method of testing that above-mentioned the deficiencies in the prior art provide.
The present invention is achieved by the following technical solution:
Intelligent relay protection outlet tester, the invention is characterized in: comprise p-wire, outlet contact acquisition module, micro-control unit, display; Wherein, system under test (SUT) and transforming plant protecting device outlet contact are connected with the collection terminal 1-15 mouth of outlet contact acquisition module by p-wire successively; the output terminal 1-15 mouth of outlet contact acquisition module is corresponding with the I/O mouth of micro-control unit to be connected, and micro-control unit gathers 1-15 intake.
A method of testing for intelligent relay protection outlet tester, step is:
1) resistance of 20M-20.6M and 600K formation pressure divider circuit is used to realize the mixing collection of active or passive outlet contact Bitwise;
2) quantity of state collected is uploaded to micro-control unit by data bus, the rising edge in micro-control unit program curing employing circle collection contact displacement process and negative edge timing computing respectively;
3) protective relaying device is exported actuation time of contact and duration by display Circulating fibrocytes, display and micro-control unit pass through serial communication.In the present invention, outlet contact acquisition module input impedance is up to 20.6M; Controller is the micro-control unit of 32; Display is the liquid crystal display of 128*64.
The present invention is directed to protective relaying device outlet contact and carry out multi-channel test at synchronization, the outlet action logic of test result and power system requirements contrasts, the accuracy of checking protective device tripping operation outlet logic correctness and definite value Outlet time.
It is reliable, safe that intelligent relay protection outlet tester is used for protective relaying device outlet logic checking work in transformer station secondary system, can complete surveying work fast.
In this device, the series connection divider resistance of active and passive contact displacement mixing acquisition module is 20M and 600K, dividing ratios P=2.91%.
Micro-control unit adopts the brilliant battle array of 6M, and the once complete circulating sampling cycle needs 180 Machine cycles, and amount to 0.36ms, sampling time error is not more than 0.4ms.
Fig. 1 is the programmed logic block diagram of micro-control unit.
Feasibility analysis:
The series connection divider resistance of acquisition module is 20M and 600K, dividing ratios P=2.91%, and forceful electric power transfers the voltage U 2=U1*P=3.21V after light current to, in the I/O effective voltage 2.0V-5.0V of microcontroller.
The I/O of micro-control unit adopts voltage driven, and for outlet contact acquisition module, input impedance is 20.6M, and input current I=110V/20.6M=5.34 μ A, can reliable samples.
In order to test the interference of this device to the straight-flow system of substation operation, carry out following test:
Table 1 is intelligent relay protection outlet tester and the conventional multimeter direct current resistance shelves data in the test input impedance of 1000V insulation resistance meter:
Table 1
Gather voltage in outlet contact acquisition module access transformer station secondary system, its input impedance is up to 20.6M, and the resistance of the direct current resistance shelves of normal multimeter is 10M, and intelligent relay protection outlet tester input impedance is 2 times of multimeter zero frequency span.Balance bridge about 20K in substation secondary straight-flow system, intelligent relay protection outlet tester input impedance is that they are more than 1000 times.The ultra-high input impedance Reliable guarantee of intelligent relay protection outlet tester can not affect the normal operation of substation secondary straight-flow system.
The present invention has following beneficial effect:
1, for the checking of protective device tripping operation outlet action logic, the present invention have found a kind of effective method, the multi-channel test while of can carrying out the protective device tripping operation active contact of outlet of transformer station and passive contact, judges the accuracy of protective device tripping operation outlet logic correctness and definite value Outlet time;
2, the invention can be widely used in power system relay protection device check and accept, in regular inspection work logic checking and fixed value checking.
Accompanying drawing explanation
Fig. 1 is the programmed logic block diagram of micro-control unit;
Fig. 2 is system framework figure of the present invention;
Fig. 3 is circuit theory diagrams of the present invention;
Fig. 4 is intelligent relay protection outlet tester shell encapsulation figure;
Fig. 5 is intelligent relay protection outlet part of detecting program's source code figure.
Embodiment
Below in conjunction with accompanying drawing, content of the present invention is described in further details.
Intelligent relay protection outlet tester, device comprises p-wire, outlet contact acquisition module, micro-control unit, display screen.By p-wire, system under test (SUT) and transforming plant protecting device outlet contact are connected with the collection terminal 1-15 mouth of outlet contact acquisition module successively; the output terminal 1-15 mouth of outlet contact acquisition module is corresponding with the I/O mouth of micro-control unit to be connected; micro-control unit gathers 1-15 intake; by serial communication delivers to display screen after computing, display screen Circulating fibrocytes result.This device can measure as many as 15 groups of protective device outlet contact action situations simultaneously; active or the passive outlet contact for multichannel; realize synchronization and measure its actuation time and duration, verify the accuracy of protective device tripping operation outlet action logic rapidly, accurately, once.
The method of testing of intelligent relay protection outlet tester; it is characterized in that: use the resistance of 20M-20.6M and 600K formation pressure divider circuit to realize the mixing collection of active or passive outlet contact Bitwise; the quantity of state collected is uploaded to micro-control unit by data bus; rising edge in micro-control unit program curing employing circle collection contact displacement process and negative edge timing computing respectively; protective relaying device is exported actuation time of contact and duration by display Circulating fibrocytes, display and micro-control unit pass through serial communication.
The present invention is directed to protective device outlet contact and realize synchronization multichannel measurement, contrast with the outlet action logic of power system requirements, the accuracy of checking protective device tripping operation outlet logic correctness and definite value Outlet time.
Overlap joint test wire: 1, the actuating hole access relay-protection tester output switch parameter contact of instrument connection, instrument connection 1 to 15 selectivity accesses active or passive protective device outlet contact 2, protective device active outlet contact access way, adopt wire clamp access outlet protection pressing plate lower end, the forceful electric power test input mouth of intelligent relay protection outlet tester is accessed in other end; 3, protective device passive outlet contact access way; adopt wire clamp access outlet protection pressing plate lower end; the light current test input mouth of intelligent relay protection outlet tester is accessed in other end, the 3.3V common port of intelligent relay protection outlet tester is introduced the common port of corresponding not charged outlet contact simultaneously.Refer to the connection terminal of Fig. 4.
Concrete case study on implementation:
Select the 110kV backup auto-activating device of certain 110kV transformer station, analog form 1 trips (bridge hauls oneself willingly into 1), in definite value item, mode 1 trips time limit 2.5s, and mode 1 is closed a floodgate time limit 0.2s, and simultaneous system 1 connection that trips jumps 344 isolating switchs of small power supply circuit 35kV and 055 isolating switch of 10kV.Test result is as table 2:
Table 2
| Test chart | Inlet wire 1 isolating switch | Inlet wire 2 isolating switch | Section switch | Small power supply 344 | Small power supply 055 |
| Outlet action situation | Tripping operation | Be failure to actuate | Close a floodgate | Tripping operation | Tripping operation |
| Actuation time | 2534ms | / | 2738MS | 2532ms | 2535ms |
| Duration | 11ms | / | 10ms | 10ms | 11ms |
Claims (4)
1. intelligent relay protection outlet tester, is characterized in that: comprise p-wire, outlet contact acquisition module, micro-control unit, display; Wherein, system under test (SUT) and transforming plant protecting device outlet contact are connected with the collection terminal 1-15 mouth of outlet contact acquisition module by p-wire successively; the output terminal 1-15 mouth of outlet contact acquisition module is corresponding with the I/O mouth of micro-control unit to be connected, and micro-control unit gathers 1-15 intake.
2. intelligent relay protection outlet tester according to claim 1, is characterized in that, controller is the micro-control unit of 32.
3. intelligent relay protection outlet tester according to claim 1, is characterized in that, display is the liquid crystal display of 128*64.
4. use the method for testing of the intelligent relay protection outlet tester described in claim 1, it is characterized in that, step is:
1) resistance of 20M-20.6M and 600K formation pressure divider circuit is used to realize the mixing collection of active or passive outlet contact Bitwise;
2) quantity of state collected is uploaded to micro-control unit by data bus, the rising edge in micro-control unit program curing employing circle collection contact displacement process and negative edge timing computing respectively;
3) protective relaying device is exported actuation time of contact and duration by display Circulating fibrocytes, display and micro-control unit pass through serial communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896316.8A CN105388417A (en) | 2015-12-08 | 2015-12-08 | Intelligent type relay protection outlet tester and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896316.8A CN105388417A (en) | 2015-12-08 | 2015-12-08 | Intelligent type relay protection outlet tester and test method |
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| CN105388417A true CN105388417A (en) | 2016-03-09 |
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| CN201510896316.8A Pending CN105388417A (en) | 2015-12-08 | 2015-12-08 | Intelligent type relay protection outlet tester and test method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109360482A (en) * | 2018-12-05 | 2019-02-19 | 苏州市职业大学 | A kind of elevator brake actual training device |
| CN110609190A (en) * | 2019-11-12 | 2019-12-24 | 国网宁夏电力有限公司石嘴山供电公司 | Relay protection device outlet checking instrument and method thereof |
| CN109360482B (en) * | 2018-12-05 | 2024-04-26 | 苏州市职业大学 | Elevator brake training device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202204884U (en) * | 2011-08-18 | 2012-04-25 | 四川省电力公司广安电业局 | Logic test device for outlets of main transformer, differential bus and automatic bus transfer equipment |
| CN104730453A (en) * | 2015-03-23 | 2015-06-24 | 国家电网公司 | Switching value contact performance tester of relay protection device |
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2015
- 2015-12-08 CN CN201510896316.8A patent/CN105388417A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202204884U (en) * | 2011-08-18 | 2012-04-25 | 四川省电力公司广安电业局 | Logic test device for outlets of main transformer, differential bus and automatic bus transfer equipment |
| CN104730453A (en) * | 2015-03-23 | 2015-06-24 | 国家电网公司 | Switching value contact performance tester of relay protection device |
Non-Patent Citations (1)
| Title |
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| 甘龙 等: "一种新型的智能型继电保护出口测试仪研发", 《电力设备》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109360482A (en) * | 2018-12-05 | 2019-02-19 | 苏州市职业大学 | A kind of elevator brake actual training device |
| CN109360482B (en) * | 2018-12-05 | 2024-04-26 | 苏州市职业大学 | Elevator brake training device |
| CN110609190A (en) * | 2019-11-12 | 2019-12-24 | 国网宁夏电力有限公司石嘴山供电公司 | Relay protection device outlet checking instrument and method thereof |
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