CN107086537B - Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection - Google Patents
Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection Download PDFInfo
- Publication number
- CN107086537B CN107086537B CN201710423293.8A CN201710423293A CN107086537B CN 107086537 B CN107086537 B CN 107086537B CN 201710423293 A CN201710423293 A CN 201710423293A CN 107086537 B CN107086537 B CN 107086537B
- Authority
- CN
- China
- Prior art keywords
- relay
- cutting
- protection
- power supply
- flakes
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/003—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to reversal of power transmission direction
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2827—Testing of electronic protection circuits
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of disconnecting devices and cutting-off method for preventing the debugging primary equipment electrification of substation's relay protection, solve the problems, such as that primary equipment accidentally charges in substation relay protection debugging process.The measure loop of closure is made of detection circuit microprocessor (20), voltage relay normally opened contact (14) and detection circuit power supply (19)；It connects on line between relay-protection tester (9) and relay-protection tester external power supply (29) and accesses electric current relay normally-closed contact (26); cutting circuit power (28), current relay coil (25) and triode switch (24) are composed in series cut-off loop, the output control terminal of connection cutting circuit microprocessor (23) in the base stage of triode switch (24)；Shutoff signal is disconnected through cutting circuit microprocessor (23) control triode switch (24) conducting, electric current relay normally-closed contact (26), to realize the purpose of the power supply of cutting relay-protection tester.
Description
Technical field
The present invention relates to disconnecting devices and its cut that in a kind of substation relay protection debugging process, primary equipment is accidentally charged
Disconnected method.After primary equipment accidentally charges, it can seriously jeopardize the safety of primary equipment installation, commissioning staff.
Background technique
The electrical equipment of substation is divided into primary equipment and secondary device.Primary equipment, which refers to, directly transports and distributes electric energy
Equipment, including transformer, breaker, bus, transmission line of electricity etc..Secondary device, which refers to, to be detected primary equipment, is controlled, being adjusted
With the equipment of protection, including measuring and controlling, gauge table and protective relaying device etc..Primary equipment and its interconnected time
Road is known as primary circuit.Secondary device and its circuit interconnected are known as secondary circuit.Voltage transformer (Potential
Transformer, abbreviation PT) it is a kind of small-sized transformer, one time winding parallel is connected in primary circuit, will once be set
Standby primary voltage is scalable to the secondary voltage of prescribed requirement, provides to observing and controlling, metering and protective relaying device primary
The voltage of equipment.After protective relaying device receives the secondary voltage and secondary current of voltage transformer and current transformer offer,
Carry out logic judgment, it is determined whether trip signal and corresponding action message are issued to breaker.It is thrown in transforming plant primary equipment
It before fortune, needs to debug protective relaying device, measure and control device and kilowatt-hour meter etc., checks whether its function is normal.Relay is protected
Shield tester can export the three-phase voltage and electric current of exchange, in debugging engineering, relay-protection tester be needed to connect two
In minor loop, analog voltage mutual inductor and current transformer provide secondary to protective relaying device, measure and control device and kilowatt-hour meter etc.
Voltage and secondary current.Substation relay protection commissioning staff is carrying out the debugging of protective relaying device monomer, relay protection whole group
In the tests such as transmission, the test of of ac telemetry function and secondary circuit wiring checking, need using relay-protection tester just
Ground voltage mutual inductor convergence control cabinet terminal block, protection cabinets back panel voltage transformer terminal block, observing and controlling cabinet back panel voltage transformer
The positions such as terminal block and metering cabinet back panel voltage transformer terminal block provide secondary to secondary devices such as protection, observing and controlling, meterings
Voltage.Phase voltage of the commissioning staff in debugging process to the corresponding secondary device application of secondary windings of PT is by debugging
Depending on purpose, range is in several volts to tens volts.When applying voltage, if the voltage output port of relay-protection tester is connected to
Secondary winding side, then secondary windings of PT charges, and due to electromagnetic induction, leads to first winding and primary equipment band
Electricity.Due to applying the difference of voltage swing in debugging process, the voltage that primary equipment generates is likely to be breached tens of kilovolts, the operation
By the personal safety of the staff such as the installation, the debugging that seriously injure on primary equipment.The occurrence of in order to avoid this, mesh
The safety measure that preceding commissioning staff generally uses is to connect the voltage output port of relay-protection tester at voltage transformer end
Son is arranged close to the side of secondary device, the air switch being then turned off between secondary device and the cable of secondary winding or will be right
The terminal block answered pushes open position in flakes, it is ensured that secondary windings of PT is not charged in pressure process.The measure exists
Very big loophole and security risk: (1) commissioning staff is easy to ignore the safety measure, does not disconnect corresponding air switch and pushes aside
Terminal block is in flakes；(2) when pushing terminal block aside in flakes, open position is not pushed completely in flakes, leads to secondary device and voltage
The secondary winding of mutual inductor still connects.Both the above reason is likely to so that in debugging process, and the two of voltage transformer
Secondary winding and primary equipment electrification, injure the personal safety of primary equipment staff.
Summary of the invention
The present invention provides a kind of disconnecting device and cutting-off method for preventing the debugging primary equipment electrification of substation's relay protection, solutions
Commissioning staff's operation error in substation relay protection debugging process of having determined and cause secondary windings of PT and once to set
Standby the technical issues of accidentally charging.
The present invention is to solve the above technical problem by the following technical programs:
A kind of disconnecting device preventing the debugging primary equipment electrification of substation's relay protection, the first winding including voltage transformer
And secondary winding, one end of secondary winding pass sequentially through first in flakes, air switch and third in flakes with protective relaying device
One end links together, and it is another with protective relaying device in flakes with the 4th in flakes that the other end of secondary winding passes sequentially through second
End links together, and relay guarantor is connected between the outside connecting terminal and the 4th outside connecting terminal in flakes of third in flakes
Protect tester, relay-protection tester external power supply is connected on relay-protection tester, first in flakes with second in flakes
Between be connected with the branch being composed in series by faulty action preventing latch switch and potential relay coil, the two of potential relay coil
End is parallel with rectification adverser, is connected on two output ends of rectification adverser by detection circuit microprocessor and voltage relay
The branch that device normally opened contact is composed in series is connected with shutoff signal transmitting module on detection circuit microprocessor, when voltage after
Electric apparatus coil obtain it is electric after, voltage relay normally opened contact closure, detection circuit microprocessor sent out by shutoff signal transmitting module
Project wireless shutoff signal；Electricity is provided on line between relay-protection tester and relay-protection tester external power supply
Current relay normally-closed contact, one end of the current relay coil of electric current relay normally-closed contact and the anode of cutting circuit power
It links together, the other end of current relay coil and the collector of triode switch link together, triode switch
The negative terminal of emitter and cutting circuit power links together, and cutting circuit micro process is connected in the base stage of triode switch
The output control terminal of device is connected with shutoff signal wireless receiving module on cutting circuit microprocessor, when shutoff signal is wireless
Receiving module receives after shutoff signal transmitting module launches wireless shutoff signal, and cutting circuit microprocessor controls triode
Switch conduction, current relay coil obtain it is electric after, electric current relay normally-closed contact is disconnected, the external electricity of relay-protection tester is made
Source stops providing power supply to relay-protection tester.
The both ends for the branch being composed in series by detection circuit microprocessor and voltage relay normally opened contact are connected with detection
Circuit power, normally opened self-test switch, the normally-closed contact of faulty action preventing latch switch and time relay coil series connection after form from
Branch is examined, having time is arranged between self-test branch and rectification adverser at the both ends of detection circuit power supply in self-test branch circuit parallel connection
Relay delay disconnects normally opened contact.
Alarm is parallel on current relay coil；It is parallel on two power inputs of relay-protection tester
Latch-in relay coil, be provided on the line between relay-protection tester and relay-protection tester external power supply from
Guard relay normally opened contact, relay tester is parallel on latch-in relay normally opened contact can reset and start switch.
A kind of cutting-off method preventing the debugging primary equipment electrification of substation's relay protection, comprising the following steps:
The first step will test and be electrically connected in the secondary winding of voltage transformer, specific steps are as follows: micro- by detection circuit
The measure loop of processor, voltage relay normally opened contact and detection circuit power supply composition closure, in detection circuit microprocessor
On be connected with shutoff signal transmitting module, first in flakes with second in flakes between connect potential relay coil, by faulty action preventing
Latch switch closure；
Cutting is electrically connected on the power supply of relay-protection tester, specific steps by second step are as follows: is protected in relay
It connects on line between shield tester and relay-protection tester external power supply and accesses electric current relay normally-closed contact, will cut off
Circuit power, current relay coil and triode switch are composed in series cut-off loop, connect in the base stage of triode switch
The output control terminal for cutting off circuit microprocessor connects shutoff signal wireless receiving on the input terminal of cutting circuit microprocessor
Module；
Third step, in substation's relay protection debugging process, if there is mis-wired secondary winding caused to be charged, voltage relay
Device coil obtains electric, and voltage relay normally opened contact closure, detection circuit microprocessor launched by shutoff signal transmitting module
Shutoff signal after shutoff signal wireless receiving module receives the signal, controls triode switch through cutting circuit microprocessor
Conducting, current relay coil obtains electric, electric current relay normally-closed contact disconnection, to realize the confession of cutting relay-protection tester
The purpose of power supply.
Detection circuit and cutting circuit have self-checking function, realize method are as follows: first in flakes with voltage relay
The junction series connection access of device coil has faulty action preventing latch switch, the normally-closed contact of normally opened self-test switch, faulty action preventing latch switch
The branch circuit parallel connection being sequentially connected in series with time relay coil is at the both ends of detection circuit power supply, in rectification adverser and detection
It is connected with time relay delay between the anode of circuit power and disconnects normally opened contact；Guaranteeing what faulty action preventing latch switch disconnected
Under the premise of, it is manually pressed by reducible normally opened self-test switch, time relay coil obtains electric, disconnects time relay delay normal
It opens contact to be closed at once, detection circuit power supply obtains potential relay coil electric by the inversion of rectification adverser, to make electricity
Potential relay normally opened contact closure, shutoff signal transmitting module launch shutoff signal, and shutoff signal wireless receiving module receives
To after the signal, through cutting circuit microprocessor control triode switch conducting, current relay coil obtains electric, electric current relay
Can normally-closed contact disconnects, alarm equipment alarm, to complete the self-test that work normally to detection circuit and cutting circuit.
Relay contact analog control system is provided on line between relay-protection tester and relay-protection tester external power supply
Instrument, which can reset, to be started switch, and can be resetted to start switch in relay tester and is parallel with latch-in relay normally opened contact,
It is parallel with latch-in relay coil on two power inputs of relay-protection tester, being manually pressed by relay tester can answer
Position start switch after, latch-in relay coil obtain it is electric, latch-in relay normally opened contact closure, at this moment relay tester can
Reset starts switch reset and opens, and relay-protection tester external power supply is made to realize that the starting to relay-protection tester is powered.
The wiring process of apparatus of the present invention and operating method are convenient, fast and safe, cutting-off method and effect quickly, can
It leans on.Wireless telecommunications are used between voltage check device and power cut-off device, can meet remote test operation.Eliminate debugging
Commissioning staff's operation error and the security risk that causes voltage transformer and primary equipment to charge in the process, it is ensured that primary equipment
The personal safety of the staff such as installation, test.
Detailed description of the invention
Fig. 1 is connecting structure for electrical equipment schematic diagram of the invention.
Specific embodiment
Below according to attached drawing, the present invention is described in detail:
It is a kind of prevent substation's relay protection debugging primary equipment electrification disconnecting device, including voltage transformer 1 it is primary around
Group 2 and secondary winding 3, one end of secondary winding 3 passes sequentially through first, and 4, air switch 8 and third 6 are protected in flakes with relay in flakes
One end of protection unit 10 links together, and the other end of secondary winding 3 passes sequentially through second in flakes 5 and the 4th in flakes 7 and relay
The other end of protective device 10 links together, third in flakes 6 outside connecting terminal and the 4th in flakes 7 outer side terminal
It is connected with relay-protection tester 9 between son, relay-protection tester external power supply is connected on relay-protection tester 9
29, it is connected between 4 and second in flakes 5 first and is connected with potential relay coil 13 group by faulty action preventing latch switch 11 in flakes
At branch, rectification adverser 15 is parallel at the both ends of potential relay coil 13, in two output ends of rectification adverser 15
On be connected with the branch being composed in series by detection circuit microprocessor 20 and voltage relay normally opened contact 14, it is micro- in detection circuit
Shutoff signal transmitting module 21 is connected on processor 20, after potential relay coil 13 must be electric, the normally opened touching of voltage relay
14 closure of point, detection circuit microprocessor 20 launch wireless shutoff signal by shutoff signal transmitting module 21；It is protected in relay
It is provided with electric current relay normally-closed contact 26 on line between shield tester 9 and relay-protection tester external power supply 29, electricity
One end of the current relay coil 25 of current relay normally-closed contact 26 and the anode of cutting circuit power 28 link together, electricity
The other end of current relay coil 25 and the collector of triode switch 24 link together, the emitter of triode switch 24 with
The negative terminal of cutting circuit power 28 links together, and cutting circuit microprocessor 23 is connected in the base stage of triode switch 24
Output control terminal, cutting circuit microprocessor 23 on be connected with shutoff signal wireless receiving module 22, when shutoff signal without
Line receiving module 22 receives after shutoff signal transmitting module 21 launches wireless shutoff signal, and cutting circuit microprocessor 23 is controlled
Triode switch 24 processed is connected, current relay coil 25 it is electric after, electric current relay normally-closed contact 26 is disconnected, relay is protected
Shield tester external power supply 29 stops providing power supply to relay-protection tester 9.
The both ends for the branch being composed in series by detection circuit microprocessor 20 and voltage relay normally opened contact 14 are connected with
Detection circuit power supply 19, the normally-closed contact 12 and time relay coil 16 of normally opened self-test switch 18, faulty action preventing latch switch 11
The self-test branch formed after series connection, self-test branch circuit parallel connection is at the both ends of detection circuit power supply 19, in self-test branch and commutation inversion
It is provided with time relay delay between device 15 and disconnects normally opened contact 17；Under 11 closed state of faulty action preventing latch switch, normally closed touching
Point 12 disconnects, and the power-off of self-test branch can not carry out self-checking function test, it is necessary to assure 11 off-state of faulty action preventing latch switch
Under, it just can be carried out self-checking function test.
Alarm 27 is parallel on current relay coil 25；On two power inputs of relay-protection tester 9
It is parallel with latch-in relay coil 30, the company between relay-protection tester 9 and relay-protection tester external power supply 29
It is provided with latch-in relay normally opened contact 31 on line, is parallel with relay tester on latch-in relay normally opened contact 31
It can reset and start switch 32.
A kind of cutting-off method preventing the debugging primary equipment electrification of substation's relay protection, comprising the following steps:
The first step will test and be electrically connected in the secondary winding 3 of voltage transformer 1, specific steps are as follows: by detection circuit
The measure loop of microprocessor 20, voltage relay normally opened contact 14 and the composition closure of detection circuit power supply 19, in detection circuit
It is connected with shutoff signal transmitting module 21 on microprocessor 20,4 and second connects voltage relay between 5 in flakes in flakes first
Coil 13；Faulty action preventing latch switch 11 is closed；
Cutting is electrically connected on the power supply of relay-protection tester 9, specific steps are as follows: in relay by second step
It connects on line between protection tester 9 and relay-protection tester external power supply 29 and accesses electric current relay normally-closed contact
26, cutting circuit power 28, current relay coil 25 and triode switch 24 are composed in series cut-off loop, opened in triode
The output control terminal for closing connection cutting circuit microprocessor 23 in 24 base stage, on the input terminal of cutting circuit microprocessor 23
Connect shutoff signal wireless receiving module 22；
Third step, in substation's relay protection debugging process, if occur mis-wired cause secondary winding 3 charge when, voltage after
Electric apparatus coil 13 must be electric, and voltage relay normally opened contact 14 is closed, and detection circuit microprocessor 20 emits mould by shutoff signal
Block 21 launches shutoff signal, after shutoff signal wireless receiving module 22 receives the signal, through cutting off circuit microprocessor 23
It controls triode switch 24 to be connected, current relay coil 25 obtains electric, the disconnection of electric current relay normally-closed contact 26, the report of alarm 27
It is alert, to realize the purpose of the power supply of cutting relay-protection tester 9；
4th step, relay-protection tester 9 power supply be cut off after, 30 power loss of latch-in relay coil, self-insurance
The disconnection of relay normally open contact 31,13 power loss of potential relay coil are held, voltage relay normally opened contact 14 disconnects, detection circuit
20 power loss of microprocessor, shutoff signal transmitting module 21 stop transmitting shutoff signal, and cutting circuit microprocessor 23 controls three poles
Pipe switch 24 turns off, 25 power loss of current relay coil, and electric current relay normally-closed contact 26 is closed；Personnel inspection to be debugged is simultaneously repaired
After having changed false wiring, it is manually pressed by relay tester and can resets and start switch 32, latch-in relay coil 30 charges, from
Guard relay normally opened contact 31 is closed, and the power supply of relay-protection tester 9 restores normal.
Detection circuit and cutting circuit have self-checking function, realize method are as follows: first in flakes 4 with voltage relay
The junction series connection access of device coil 13 has a faulty action preventing latch switch 11, normally opened self-test switch 18, faulty action preventing latch switch 11
The branch circuit parallel connection that normally-closed contact 12 and time relay coil 16 are sequentially connected in series is at the both ends of detection circuit power supply 19, whole
It is connected with time relay delay between stream inverter 15 and the anode of detection circuit power supply 19 and disconnects normally opened contact 17；Guaranteeing
Under the premise of faulty action preventing latch switch 11 disconnects, it is manually pressed by reducible normally opened self-test switch 18, time relay coil 16
Must be electric, so that time relay delay is disconnected normally opened contact 17 and be closed at once, detection circuit power supply 19 passes through rectification adverser 15
Inversion obtains potential relay coil 13 electric, so that it is closed voltage relay normally opened contact 14, shutoff signal transmitting module 21
Launch shutoff signal, after shutoff signal wireless receiving module 22 receives the signal, is controlled through cutting circuit microprocessor 23
Triode switch 24 is connected, and current relay coil 25 must be electric, and electric current relay normally-closed contact 26 disconnects, and alarm 27 is alarmed,
To complete the self-test that can be worked normally to detection circuit and cutting circuit.
Claims (3)
1. it is a kind of prevent substation's relay protection debugging primary equipment electrification disconnecting device, including voltage transformer (1) it is primary around
Group (2) and secondary winding (3), one end of secondary winding (3) passes sequentially through first, and (4), air switch (8) and third be in flakes in flakes
(6) one end with protective relaying device (10) links together, and the other end of secondary winding (3) passes sequentially through second in flakes (5)
With the 4th in flakes (7) and the other end of protective relaying device (10) link together, in the outside connecting terminal of third (6) in flakes
Relay-protection tester (9) are connected between the 4th in flakes the outside connecting terminal of (7), on relay-protection tester (9)
Be connected with relay-protection tester external power supply (29), which is characterized in that first in flakes (4) and second connect between (5) in flakes
It is connected to the branch being composed in series by faulty action preventing latch switch (11) and potential relay coil (13), in potential relay coil
(13) both ends are parallel with rectification adverser (15), are connected on two output ends of rectification adverser (15) micro- by detection circuit
The branch that processor (20) and voltage relay normally opened contact (14) are composed in series, connects on detection circuit microprocessor (20)
There are shutoff signal transmitting module (21), after potential relay coil (13) must be electric, voltage relay normally opened contact (14) closure,
Detection circuit microprocessor (20) launches wireless shutoff signal by shutoff signal transmitting module (21)；In relay protection test
It is provided on line between instrument (9) and relay-protection tester external power supply (29) electric current relay normally-closed contact (26), electricity
One end of the current relay coil (25) of current relay normally-closed contact (26) and the anode of cutting circuit power (28) are connected to
Together, the other end of current relay coil (25) and the collector of triode switch (24) link together, triode switch
(24) emitter and the negative terminal of cutting circuit power (28) link together, and are connected in the base stage of triode switch (24)
The output control terminal for cutting off circuit microprocessor (23) is connected with shutoff signal in cutting circuit microprocessor (23) and wirelessly connects
It receives module (22), launches wireless cutting when shutoff signal wireless receiving module (22) receives shutoff signal transmitting module (21)
After signal, cutting circuit microprocessor (23) control triode switch (24) conducting, current relay coil (25) it is electric after, will
Electric current relay normally-closed contact (26) disconnects, and stops relay-protection tester external power supply (29) to relay-protection tester
(9) power supply is provided.
2. a kind of disconnecting device for preventing the debugging primary equipment electrification of substation's relay protection according to claim 1, feature
It is, the both ends for the branch being composed in series by detection circuit microprocessor (20) and voltage relay normally opened contact (14) are connected with
Detection circuit power supply (19), normally opened self-test switch (18), faulty action preventing latch switch (11) normally-closed contact (12) and time relay
Self-test branch is formed after device coil (16) series connection, self-test branch circuit parallel connection is at the both ends of detection circuit power supply (19), in self-test branch
It is provided with time relay delay between rectification adverser (15) and disconnects normally opened contact (17).
3. a kind of disconnecting device for preventing the debugging primary equipment electrification of substation's relay protection according to claim 1, feature
It is, alarm (27) is parallel on current relay coil (25)；In two power inputs of relay-protection tester (9)
On be parallel with latch-in relay coil (30), in relay-protection tester (9) and relay-protection tester external power supply (29)
Between line on be provided with latch-in relay normally opened contact (31), be parallel on latch-in relay normally opened contact (31)
Relay tester, which can reset, starts switch (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710423293.8A CN107086537B (en) | 2017-06-07 | 2017-06-07 | Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710423293.8A CN107086537B (en) | 2017-06-07 | 2017-06-07 | Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107086537A CN107086537A (en) | 2017-08-22 |
| CN107086537B true CN107086537B (en) | 2019-06-11 |
Family
ID=59609011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710423293.8A Active CN107086537B (en) | 2017-06-07 | 2017-06-07 | Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107086537B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813945B (en) * | 2019-01-21 | 2021-01-15 | 国网山东省电力公司平度市供电公司 | PT secondary voltage detection connecting device for relay protection test |
| CN111157877B (en) * | 2019-12-31 | 2022-04-15 | 西安翔腾微电子科技有限公司 | Off-state load open circuit detection circuit |
| CN111273147A (en) * | 2020-03-17 | 2020-06-12 | 神华国能集团有限公司 | Insulation measuring device |
| CN111900698A (en) * | 2020-07-31 | 2020-11-06 | 中国南方电网有限责任公司超高压输电公司昆明局 | Safety anti-misoperation circuit of converter transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477186U (en) * | 2009-07-07 | 2010-05-19 | 厦门士林电机有限公司 | Tester for residual current circuit breaker |
| CN201812423U (en) * | 2010-12-07 | 2011-04-27 | 北京北研兴电力仪表有限责任公司 | Program-controlled analog device for false wiring of electric energy meter |
| CN106019039A (en) * | 2016-08-11 | 2016-10-12 | 国网江苏省电力公司电力科学研究院 | Assembly line automatic detection system and method for standard relay protection device |
| CN207010200U (en) * | 2017-06-07 | 2018-02-13 | 国网山西省电力公司电力科学研究院 | Prevent the powered shearing device of transformer station's relay protection debugging primary equipment |
-
2017
- 2017-06-07 CN CN201710423293.8A patent/CN107086537B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477186U (en) * | 2009-07-07 | 2010-05-19 | 厦门士林电机有限公司 | Tester for residual current circuit breaker |
| CN201812423U (en) * | 2010-12-07 | 2011-04-27 | 北京北研兴电力仪表有限责任公司 | Program-controlled analog device for false wiring of electric energy meter |
| CN106019039A (en) * | 2016-08-11 | 2016-10-12 | 国网江苏省电力公司电力科学研究院 | Assembly line automatic detection system and method for standard relay protection device |
| CN207010200U (en) * | 2017-06-07 | 2018-02-13 | 国网山西省电力公司电力科学研究院 | Prevent the powered shearing device of transformer station's relay protection debugging primary equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107086537A (en) | 2017-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107086537B (en) | Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection | |
| CN103792505B (en) | A kind of electric power DC system earth fault analog | |
| WO2014101574A1 (en) | Coal mine remote leakage test method and device | |
| CN108183462A (en) | For the electric protective device and electrical equipment of electrical equipment | |
| CN203069655U (en) | Induction-type high-voltage presence indication device | |
| CN208571394U (en) | A kind of photovoltaic power generation box-type substation based on intelligent controller | |
| CN208043923U (en) | A kind of insulation leakagel volume leakage automatic detection device of distribution box | |
| CN102981101A (en) | Detection method for misoperation prevention of power transmission line | |
| CN207889556U (en) | A kind of charging equipment and its earth leakage protective control circuit | |
| CN207440195U (en) | A kind of multi-functional energizing test platform | |
| CN207010200U (en) | Prevent the powered shearing device of transformer station's relay protection debugging primary equipment | |
| CN207939072U (en) | A kind of high voltage switch cabinet electricity check trolley | |
| CN207353835U (en) | A kind of 500KV breaker arc protection devices based on power station hole formula mill construction | |
| CN103825259B (en) | Relay protection system | |
| US11112815B1 (en) | Fault isolation and restoration scheme | |
| CN208384061U (en) | A kind of insulation testing system of direct-current charging post | |
| CN203630257U (en) | A transformer substation electrical network accident simulation circuit | |
| CN107024656A (en) | Star（Y）The high-voltage motor insulated detection means of connection | |
| CN111751766A (en) | Main transformer bushing current transformer polarity detection method | |
| CN103762557A (en) | Device and method for open-circuit-resistant protection of current transformer | |
| CN110501658A (en) | One kind is portable to be used for DC experiment power supply insulating monitoring and trouble shoot instrument | |
| CN104183379A (en) | Connecting device for maintenance of secondary side of electric power current transformer | |
| CN105529685A (en) | Temporary IT grounding system switching method for variable-frequency-load TT grounding system low-voltage system under condition of electric leakage failure | |
| JP5903143B1 (en) | Disconnection detection apparatus and method | |
| US9923377B2 (en) | Electrical tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |