CN109521311A - Relay protection multiple exit pressing plate measuring instrument - Google Patents
Relay protection multiple exit pressing plate measuring instrument Download PDFInfo
- Publication number
- CN109521311A CN109521311A CN201910041842.4A CN201910041842A CN109521311A CN 109521311 A CN109521311 A CN 109521311A CN 201910041842 A CN201910041842 A CN 201910041842A CN 109521311 A CN109521311 A CN 109521311A
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- CN
- China
- Prior art keywords
- relay
- measuring instrument
- pressing plate
- protection
- plate measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Abstract
The invention discloses a kind of relay protection multiple exit pressing plate measuring instrument, it is by being spaced apart, intermediate relay, the time relay, indicator light, involution button, connection jaws connect and compose electric loop, realizes the measurement of output clamping.The present invention quickly measures the potential state of multiple output clampings simultaneously; record maintains output clamping potential state information; and information is recorded by manual artificial involution; it is made into a kind of independent relay protection outlet pressing plate measuring instrument; or it is embedded in existing relay-protection tester; guarantee the accuracy and reliability of measurement, improves relay protection examination working efficiency.
Description
Technical field
The present invention relates to measuring instruments, and in particular to a kind of relay protection multiple exit pressing plate measuring instrument.
Background technique
In to the verification maintenance work such as 220kV route protection, main transformer protection, bus differential protection, need to measure on protection screen
Whether multiple output clampings (three or more) meet protection exit requirement.Existing measurement method is with multimeter by special people
Member measures one by one, and one Test to Failure of every simulation, survey crew can only measure one outlet pressing plate, and has measured multiple outlet pressures
Plate, it is necessary to repeatedly simulate the same failure, increase the action frequency of workload and protection in this way；Or with protection tester
Contact open into, but the pressing plate that has several exits just needs to connect several groups of wiring, and before shielding, many lines are connect after screen, such wiring increases
Danger coefficient, and wiring is complicated, extends the working time, reduces working efficiency.
Summary of the invention
The purpose of the present invention is: based in the work such as relay protection check, it can not quickly and effectively measure multiple output clampings
The case where, a kind of relay protection multiple exit pressing plate measuring instrument is designed, quickly measures the potential state of multiple output clampings, note simultaneously
Record maintains output clamping potential state information, and records information by manual artificial involution, improves relay protection examination work effect
Rate guarantees the accuracy and reliability of measurement.
The technical solution of the invention is as follows: the electric loop of the measuring instrument measures circuit parallel connection group by 10 or more units
At；The described unit measurement circuit is by being spaced apart, intermediate relay, the time relay, indicator light, involution button, connection jaws connect
Connect composition.
Wherein, the specific connection in unit measurement circuit is as follows: two-phase, which is spaced apart, introduces two positive and negative power supplys of direct current
Line；Positive power line connects two contacts of intermediate relay, and one is used for circuit self-sustaining, another is used for starting time relay
Device coil；Time relay contact is connected with connection jaws, after in parallel with intermediate relay self-sustaining contact, then with intermediate relay
Coil, current-limiting resistance, indicator light series connection, are finally connected to one end of involution button, and the other end of involution button connects negative supply
Line.
Further, the electric loop can be made an independent relay protection outlet pressing plate measuring instrument,
It can be embedded in existing relay-protection tester.
The invention has the following advantages that
1, the potential state of multiple output clampings is measured simultaneously, and record maintains output clamping potential state information, and by manual
The information of artificial involution record, solves the problems, such as that all outlet ports pressing plate cannot measure simultaneously, and measurement result is more intuitive, improves
The accuracy and safety of protective calibration；
2, TJ contact is not kept after solving protection act, and influences the problem of measuring；
3, it solves the problems, such as that the export inspection of each protection needs repeatedly to simulate same failure, reduces the number of simulated failure,
Reduce the loss of the workload and protective device of staff；
4, after measuring instrument connects, in relay protection check, measurement by using measuring instrument to multiple exit pressing plate is not required to artificial
Operation and monitoring, can safe and efficient completion measurement task, reduce human input, strong operability；
5, it can be used cooperatively with various types of protective devices, it is adaptable；
6, measuring instrument wiring is simple, practical, easy to carry；
7, it can be made an independent relay protection outlet pressing plate measuring instrument, existing relay protection test can also be embedded in
In instrument, multiple output clamping measurement functions are realized.
Detailed description of the invention
Fig. 1 is appearance diagram of the invention；
Fig. 2 is the photo in kind of Fig. 1；
Fig. 3 is circuit diagram of the invention.
Specific embodiment
Technical solution of the invention is further illustrated with reference to the accompanying drawing, but is not to be construed as to technical solution
Limitation, improvement on this basis come under protection scope of the present invention.
As shown in Figure 1, being appearance diagram of the invention；As shown in Fig. 2, for photo in kind；In figure: frontal left is control
Region processed ,+KM ,-KM socket connect the positive-negative power of protective device respectively, which controls by air switch KK, reset button
FA is used to indicate the reset of lamp HD；Positive right side of face is measured zone, and the sockets such as L1, L2 ... L10 connect different on protection screen respectively
Output clamping (connection: open pressing plate, connect in non-transformer side), 10 HD indicator light of 1HD, 2HD ... it is bright it is no for examines export
Correctness.
As shown in figure 3, being circuit diagram of the invention；In figure: 1TJ, 2TJ are trip protection contact；1LP1,1LP2 are
Protection exit pressing plate；1ZJ, 2ZJ are intermediate relay；1SJ, 2SJ are the time relay；1R1,1R2,2R1,2R2 are limited galvanic electricity
Resistance；1HD, 2HD are indicator light；FA is reset button；KK is air switch；Wherein, schematic diagram is to measure two output clampings
For, it can be extended to multiple, do not drawn one by one in figure certainly；It is the secondary circuit of protective device in dotted line frame in schematic diagram
Schematic diagram；The connection of its electric loop is as follows: two-phase, which is spaced apart, introduces two positive and negative power supply lines of direct current；Wherein positive power line connects
Two contacts of intermediate relay, one is used for circuit self-sustaining, another is used for starting time relay coil；Time relay
Device contact is connected with connection jaws, after in parallel with intermediate relay self-sustaining contact, then with intermediate relay coil, current-limiting resistance,
Indicator light series connection, is finally connected to one end of involution button, and the other end of involution button connects negative power line.
As shown in figure 3, its course of work is as follows:
1, before protective calibration simulated failure, the wiring of+KM of measuring instrument ,-KM socket is connect to the positive-negative power of protective device respectively,
L1, L2 socket wiring connect the output clamping (connection: open pressing plate, connect in no current potential side) for needing to measure on protection screen respectively, close
On be spaced apart KK；
2, when protective calibration simulated failure, if protective device requires 1TJ movement outlet, the movement of 1TJ contact, device positive supply warp
1TJ contact, 1SJ normally closed contact, 1ZJ coil, 1R1,1HD, FA, KK to negative supply, light indicator light 1HD, 1TJ in start loop
Therefore contact movement is examined；1ZJ coil obtains electric simultaneously, and 1ZJ1 movement is made to realize that self-sustaining, 1ZJ2 movement obtain 1SJ coil
Electricity, 1SJ normally closed contact act opening after 0.1 second, guarantee in the case where indeed constituting self-holding circuit, and cutting original starts back
Road (no matter at this time whether 1TJ opens)；
3, after protective calibration simulated failure, according to export requirement, check the bright situation of all indicator lights whether with require it is consistent；If
Unanimously, then the correctness of protection act to output clamping is demonstrated, reset (FA) button is pressed, restores indicator light, returns to initial shape
State is ready for measurement next time.
It is also contemplated that following problems:
1, parasitic loop: having browsed existing all 220kV route protections, main transformer protection, bus differential protection producer schematic diagram, discovery
The pressing plate front end portion for accessing measuring instrument is made of tripping contact TJ；And breaking coil is in the rear end part of pressing plate, due to
The opening of pressing plate, is isolated with measuring instrument, therefore will not be activated；Due to not keeping for TJ contact and prolonging for SJ normally closed contact
When open (ensuring that ZJ coil first starts), ensure that pressing plate front end portion is isolated quickly；I.e. measuring instrument is once activated, and is tested
The outlet loop of pressing plate is isolated, therefore will not generate parasitic loop.
2, positive-negative power: since protective device is in all outlet ports pressing plate front end, the DC power supply of TJ is flowed through, however not excluded that have a
Not reversed possibility, then occurring having from the power supply of pressing plate access measuring instrument just has negative situation；It can from the schematic diagram of measuring instrument
To find out, even if there is such case, direct current positive-negative power is also impossible to short circuit.
3, loop resistance: because the direct current of electric substation is 220V power supply, so in the schematic diagram of measuring instrument it is involved after
The voltage rating of the components such as electric appliance, indicator light is DC220V, and there are two 1 kilo-ohm in the measurement branch of each outlet
Resistance ensure that even if there is the failure of some component, will not cause direct-current short circuit.
Claims (3)
1. relay protection multiple exit pressing plate measuring instrument, it is characterised in that: the electric loop of the measuring instrument is surveyed by 10 or more units
Amount circuit composes in parallel；The described unit measurement circuit by being spaced apart, intermediate relay, the time relay, indicator light, involution by
Button, connection jaws connect and compose.
2. relay protection multiple exit pressing plate measuring instrument according to claim 1, it is characterised in that the unit measures back
The specific connection on road is as follows: two-phase, which is spaced apart, introduces two positive and negative power supply lines of direct current；Positive power line connects two of intermediate relay
Contact, one is used for circuit self-sustaining, another is used for starting time relay coil；Time relay contact and connection jaws phase
Even, it after in parallel with intermediate relay self-sustaining contact, then connects with intermediate relay coil, current-limiting resistance, indicator light, finally connects
It is connected to one end of involution button, the other end of involution button connects negative power line.
3. relay protection multiple exit pressing plate measuring instrument according to claim 1, it is characterised in that: the electric loop can
To be made into an independent relay protection outlet pressing plate measuring instrument, can also be embedded in existing relay-protection tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041842.4A CN109521311B (en) | 2019-01-17 | 2019-01-17 | Relay protection multi-outlet pressing plate measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041842.4A CN109521311B (en) | 2019-01-17 | 2019-01-17 | Relay protection multi-outlet pressing plate measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109521311A true CN109521311A (en) | 2019-03-26 |
| CN109521311B CN109521311B (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041842.4A Active CN109521311B (en) | 2019-01-17 | 2019-01-17 | Relay protection multi-outlet pressing plate measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN109521311B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618335A (en) * | 2019-10-15 | 2019-12-27 | 云南电网有限责任公司保山供电局 | Electric power is with multi-functional protection detection clamp plate device |
| CN117233515A (en) * | 2023-11-13 | 2023-12-15 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
Citations (8)
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|---|---|---|---|---|
| SU779930A1 (en) * | 1978-07-24 | 1980-11-15 | Всесоюзный Государственный Проектно- Изыскательский И Научно-Исследовательский Институт Энергетических Систем И Электрических Сетей "Энергосетьпроект" | Method of testing current circuits of relay protection systems |
| US4295175A (en) * | 1980-04-21 | 1981-10-13 | General Electric Company | Pilot wire relay protection system for electrical distribution networks |
| JP2002084652A (en) * | 2000-09-06 | 2002-03-22 | Meidensha Corp | Tester for protective relay device |
| CN102305897A (en) * | 2011-07-28 | 2012-01-04 | 山东电力集团公司莱芜供电公司 | Relay protecting exit tester |
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-
2019
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Patent Citations (8)
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| SU779930A1 (en) * | 1978-07-24 | 1980-11-15 | Всесоюзный Государственный Проектно- Изыскательский И Научно-Исследовательский Институт Энергетических Систем И Электрических Сетей "Энергосетьпроект" | Method of testing current circuits of relay protection systems |
| US4295175A (en) * | 1980-04-21 | 1981-10-13 | General Electric Company | Pilot wire relay protection system for electrical distribution networks |
| JP2002084652A (en) * | 2000-09-06 | 2002-03-22 | Meidensha Corp | Tester for protective relay device |
| CN102305897A (en) * | 2011-07-28 | 2012-01-04 | 山东电力集团公司莱芜供电公司 | Relay protecting exit tester |
| CN103399229A (en) * | 2013-07-30 | 2013-11-20 | 国家电网公司 | Testing device for protection outlet of relay protection device |
| CN204720949U (en) * | 2015-06-05 | 2015-10-21 | 国网河南许昌县供电公司 | The circuit breaker automatic recloser that time delay is adjustable |
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| 丁万林等: "浅谈如何提高继电保护及安全自动装置的可靠性", 甘肃冶金, vol. 37, no. 1, pages 103 - 108 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618335A (en) * | 2019-10-15 | 2019-12-27 | 云南电网有限责任公司保山供电局 | Electric power is with multi-functional protection detection clamp plate device |
| CN117233515A (en) * | 2023-11-13 | 2023-12-15 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
| CN117233515B (en) * | 2023-11-13 | 2024-02-13 | 广东电网有限责任公司佛山供电局 | Method and system for measuring state of outlet pressing plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109521311B (en) | 2023-10-13 |
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