CN205507031U - Intelligent relay protection exports tester - Google Patents
Intelligent relay protection exports tester Download PDFInfo
- Publication number
- CN205507031U CN205507031U CN201521009554.4U CN201521009554U CN205507031U CN 205507031 U CN205507031 U CN 205507031U CN 201521009554 U CN201521009554 U CN 201521009554U CN 205507031 U CN205507031 U CN 205507031U
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- China
- Prior art keywords
- outlet
- control unit
- contact
- micro
- mouth
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Abstract
The utility model discloses an intelligent relay protection exports tester, including test wire, export contact collection module, little the control unit, display screen. Be it that the protection device outlet of transformer substation contact holds 1 with export contact collection module's collection in proper order with system under test to pass test the line 15 the mouth is connected, export contact collection module's output 1 15 mouthful corresponding with little the control unit's IO mouth and to be connected, does the the control unit that declines gather 1 15 open the income volume, deliver to the display screen on the operation back is through serial port communication, the display screen demonstration result that circulates. The device can the simultaneous measurement as many as 15 protection device outlet of the group contact action condition, to the active or passive export of multichannel contact, realize the same moment and measure its operate time and duration, rapidly, accurate, once only verify the accuracy of protection device tripping operation export action logic.
Description
Technical field
This utility model relates to a kind of device testing the outlet contact action situation of protective relaying device in power system, belongs to
In Relay Protection Technology in Power System field.
Background technology
The development of society requires the highest power supply reliability, and the protective relaying device action in power system is just
Really rate direct relation stablizing of electrical network, thus more and more higher to the prescription of protection device examination, regular inspection.Protection device is jumped
The checking of lock outlet action logic is in key link in protection device examination, regular inspection project.Traditional relay protection outlet is touched
The test of point: active outlet general-purpose becomes measurement outlet current potential, passive outlet one by one and surveys with circuit tester after untiing secondary line
Measure mouthful break-make or progressively test by relay-protection tester survey intake function.It is long that traditional method measures the time, and workload is big,
Can only indirectly measure partial act logic, it is more and more higher that conventional test methodologies has been not enough to deal with requirement, and logic function is more come
The examination of protection device, the regular inspection that more complicate work.
Summary of the invention
This utility model is precisely in order to the intelligent relay protection of one overcoming above-mentioned the deficiencies in the prior art and providing goes out
Mouth tester.
This utility model is achieved by the following technical solution:
Intelligent relay protection outlet tester, of the present utility model is characterised by: include that p-wire, outlet contact gather
Module, micro-control unit, display；Wherein, p-wire by system under test (SUT) i.e. transforming plant protecting device outlet contact successively with go out
The collection terminal 1-15 mouth of mouth contact acquisition module is connected, the outfan 1-15 mouth of outlet contact acquisition module and micro-control unit
I/O mouth correspondence connect, micro-control unit gather outfan 1-15 mouth intake.Outlet contact acquisition module uses 20M-
The resistance of 20.6M and 600K constitutes pressure divider circuit and realizes the mixing collection of active or passive outlet contact Bitwise, collects
Quantity of state be uploaded to micro-control unit by data/address bus, micro-control unit program curing uses circle collection contact to conjugate
Rising edge in journey and trailing edge timing computing respectively, export movement time and the persistent period of contact by protective relaying device
By the circulation display of LCD12864 display, display and micro-control unit pass through serial communication.In this utility model, outlet is touched
Point acquisition module input impedance is up to 20.6M；Micro-control unit is the micro-control unit of 32；Display is the liquid crystal of 128*64
Display.
This utility model carries out multi-channel test, test result and electricity for protective relaying device outlet contact at synchronization
The outlet action logic that Force system requires contrasts, checking protection device tripping operation outlet logic correctness and definite value Outlet time
Accuracy.
Intelligent relay protection outlet tester is the checking of protective relaying device outlet logic in transformer station secondary system
Work is reliable, safe, can be rapidly completed measurement work.
In this device, the series connection divider resistance of active and passive contact displacement mixing acquisition module is 20M and 600K, dividing potential drop
Ratio P=2.91%.
Micro-control unit uses 6M crystalline substance battle array, the most complete circulating sampling cycle to need 180 Machine cycles, amounts 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, and dividing ratios P=2.91%, after forceful electric power transfers light current to
Voltage U2=U1*P=3.21V, in the I/O active voltage 2.0V-5.0V of microcontroller.
The I/O of micro-control unit uses voltage to drive, and for outlet contact acquisition module, input impedance is 20.6M, input
Electric current I=110V/20.6M=5.34 μ A, can be with reliable samples.
In order to test this device interference to the straight-flow system of substation operation, carry out following test:
Table 1 is that intelligent relay protection outlet tester and conventional circuit tester D.C. resistance shelves are at 1000V insulation resistance meter
Test input impedance data:
Table 1
Outlet contact acquisition module accesses and gathers voltage in transformer station secondary system, and its input impedance is up to 20.6M, and just
Often the resistance of the D.C. resistance shelves of circuit tester is 10M, and intelligent relay protection outlet tester input impedance is circuit tester direct current
2 times of shelves.Balance bridge about 20K in substation secondary straight-flow system, intelligent relay protection outlet tester input impedance
It is that they are more than 1000 times.The ultra-high input impedance Reliable guarantee of intelligent relay protection outlet tester does not interferes with substation secondary
Straight-flow system properly functioning.
This utility model has the advantages that
1, for the checking of protection device tripping operation outlet action logic, this utility model have found a kind of effective side
Method, can export active contact to the protection device tripping operation of transformer station and passive touch point carries out multi-channel test simultaneously, it is judged that protection
Device tripping operation outlet logic correctness and the accuracy of definite value Outlet time；
2, this utility model create can be widely applied to power system relay protection device check and accept, regular inspection work in patrol
Collect 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 utility model；
Fig. 3 is circuit theory diagrams of the present utility model；
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.
Detailed description of the invention
Below in conjunction with the accompanying drawings content of the present utility model is described in further details.
Intelligent relay protection outlet tester, device includes p-wire, outlet contact acquisition module, micro-control unit,
Display screen.By p-wire by system under test (SUT) i.e. transforming plant protecting device outlet contact successively with outlet the adopting of contact acquisition module
Collection end 1-15 mouth is connected, and the outfan 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 outfan 1-15 mouth intake, and by delivering to display screen on serial communication after computing, display screen circulation is aobvious
Show result.This device can measure up to 15 groups protection device outlet contact action situations simultaneously, active or passive for multichannel
Outlet contact, it is achieved synchronization is measured its movement time and persistent period, rapidly, accurately, disposably verifies protection device
The accuracy of tripping operation outlet action logic.
Outlet contact acquisition module uses the resistance of 20M and 600K to constitute pressure divider circuit and realizes active or passive outlet contact
The mixing collection of Bitwise, the quantity of state collected is uploaded to micro-control unit by data/address bus, and micro-control unit solidifies
Program uses the rising edge during the displacement of circle collection contact and trailing edge timing computing respectively, is gone out by protective relaying device
The movement time of mouth contact and persistent period, display and micro-control unit passed through serial communication by display circulation display.
This utility model realizes synchronization multichannel measurement, with going out of power system requirements for protection device outlet contact
Mouth action logic contrasts, checking protection device tripping operation outlet logic correctness and the accuracy of definite value Outlet time.
Overlap joint test wire: 1, instrument connection actuating hole access relay-protection tester output switch parameter contact, instrument connection 1 to
15 selectivitys access active or passive protection device outlet contact 2, protection device active outlet contact access way, use line
Clamping connection inlet/outlet protection pressing plate lower end, the forceful electric power test input port of intelligent relay protection outlet tester is accessed in other end；
3, protection device passive outlet contact access way, uses wire clamp to access outlet protection pressing plate lower end, and intelligence is accessed in other end
The light current test input port of type relay protection outlet tester, the 3.3V by intelligent relay protection outlet tester is public simultaneously
End introduces the common port of corresponding not charged outlet contact.Refer to the binding post of Fig. 4.
It is embodied as case:
Selecting the 110kV backup auto-activating device of certain 110kV transformer station, analog form 1 trips (bridge hauls oneself willingly into 1), definite value Xiang Zhongfang
Formula 1 trips time limit 2.5s, and mode 1 is closed a floodgate time limit 0.2s, and 344 choppers of small power supply circuit 35kV jumped by simultaneous system 1 tripping operation connection
055 chopper with 10kV.Test result such as table 2:
Table 2
| Test table | Inlet wire 1 chopper | Inlet wire 2 chopper | Section switch | Small power supply 344 | Small power supply 055 |
| Outlet action situation | Tripping operation | It is failure to actuate | Close a floodgate | Tripping operation | Tripping operation |
| Movement time | 2534ms | / | 2738MS | 2532ms | 2535ms |
| Persistent period | 11ms | / | 10ms | 10ms | 11ms |
Claims (3)
- The most intelligent relay protection outlet tester, it is characterised in that: include p-wire, outlet contact acquisition module, microcontroller Unit, display；Wherein, system under test (SUT) i.e. transforming plant protecting device outlet contact is gathered mould with outlet contact by p-wire successively The collection terminal 1-15 mouth of block is connected, and the outfan 1-15 mouth of outlet contact acquisition module is corresponding with the I/O mouth of micro-control unit Connecting, micro-control unit gathers outfan 1-15 mouth intake；Outlet contact acquisition module uses the electricity of 20M-20.6M and 600K Resistance constitutes pressure divider circuit and realizes the mixing collection of active or passive outlet contact Bitwise, and the quantity of state collected passes through data Bus is uploaded to micro-control unit；Movement time and persistent period that protective relaying device exports contact are circulated by display Display, display and micro-control unit pass through serial communication.
- Intelligent relay protection outlet tester the most according to claim 1, it is characterised in that micro-control unit is 32 Micro-control unit.
- Intelligent relay protection outlet tester the most according to claim 1, it is characterised in that display is 128*64's Liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009554.4U CN205507031U (en) | 2015-12-08 | 2015-12-08 | Intelligent relay protection exports tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009554.4U CN205507031U (en) | 2015-12-08 | 2015-12-08 | Intelligent relay protection exports tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205507031U true CN205507031U (en) | 2016-08-24 |
Family
ID=56720255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009554.4U Active CN205507031U (en) | 2015-12-08 | 2015-12-08 | Intelligent relay protection exports tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205507031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327083A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
-
2015
- 2015-12-08 CN CN201521009554.4U patent/CN205507031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327083A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
| CN112327083B (en) * | 2020-10-31 | 2022-08-26 | 贵州电网有限责任公司 | Logic verifier for protection trip outlet |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |