CN107394751A - The process of preparing of excitation system trip(ping) circuit - Google Patents
The process of preparing of excitation system trip(ping) circuit Download PDFInfo
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- CN107394751A CN107394751A CN201710638679.0A CN201710638679A CN107394751A CN 107394751 A CN107394751 A CN 107394751A CN 201710638679 A CN201710638679 A CN 201710638679A CN 107394751 A CN107394751 A CN 107394751A
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- trip
- ping
- circuit
- tripping
- excitation system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
- H02H7/065—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors against excitation faults
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to the process of preparing of excitation system trip(ping) circuit, pass through the determination of the design of two-way trip(ping) circuit, the type selecting of tripping relay and buying, the design of the key wiring diagram of trip(ping) circuit and installation diagram, the monomer technical testing of tripping relay, the installation of tripping relay, distribution, and the test and joint debugging of trip(ping) circuit, to complete the preparation of excitation system trip(ping) circuit.The key of the present invention is the type selecting of high-power tripping relay, and its operating power is 6~7W, response time 10ms, and operating voltage remains to effective action in the range of 55%~70%, met《The great anti-accident measures relay protection specialty emphasis of 18 power networks of State Grid Corporation of China is implemented to require》Regulation, eliminate the potential safety hazard of existing trip(ping) circuit.The process of preparing of the present invention, ensure that the precise movement of tripping relay, improves excitation system reliability of operation, and cost is low, and workload is small, easily implement.
Description
Technical field
The present invention relates to the process of preparing of excitation system trip(ping) circuit.
Background technology
In the running of power station unit, when causing to protect chaser because of excitation system external equipment failure, from electric
Must be shunt tripping degaussing switch with demagnetization from the point of view of in logic.For excitation system, degaussing switch uses double breaking coils,
And protection equipment is typically also classified into two sets of A, B.When the chaser accident of other equipment failure occurs, the two-way from protection equipment
Trip signal carries out demagnetization by the chain degaussing switch of jumping of tripping relay K03 and tripping relay K04 respectively.Existing outside
Tripping relay K03 and K04 are 60.13 serial relays of Italian FINDER companies, and its operating power is 1.3W, during response
Between be 4ms, operating voltage range 80%~110%, do not reach far《The great anti-accident of 18 power networks of State Grid Corporation of China is arranged
Apply-relay protection specialty emphasis implementation requirement》Technical requirements on tripping relay in power system：I.e. operating power should not
Less than 5W, the response time is not less than 10ms, and operating voltage range can effective action in 55%~70%Un.In excitation system
In actual motion, have occurred and that more cause KO3, K04 tripping relay operating power deficiencies and malfunction, it is non-so as to cause
Orderly closedown accident, safe operation and the economic indicator of power station generator group are had a strong impact on.Therefore, tripped for excitation system
The transformation in loop is extremely urgent.
The content of the invention
The invention discloses a kind of process of preparing of simple, reliable, precise movement excitation system trip(ping) circuit, carry
The high operating power of excitation system trip(ping) circuit relay, it is accurate so as to improve the action of trip(ping) circuit outside excitation system
Property, it is met the technical requirements of relevant criterion, eliminate and malfunction chaser accident occurs because of actuating of relay underpower
Hidden danger, so as to improve the accuracy of excitation system trip(ping) circuit action, it ensure that the reliability of unit operation.The skill of the present invention
Art scheme is a kind of process of preparing of excitation system trip(ping) circuit：
The first step:Determine the design of trip(ping) circuit:Excitation system includes two-way trip(ping) circuit, and response respectively comes from two
The outside trip signal of power station protection equipment is covered, protection equipment is sent to the trip signal of excitation system, inside energizing apparatus
The precise movement of high-power tripping relay start degaussing switch tripping operation, so as to cut off excitation system, protect generating set；
Second step：Design according to trip(ping) circuit carries out the design of the electrical principle wiring drawing of trip(ping) circuit, and
It assembles the design of drawing；
3rd step：The type selecting of high-power tripping relay：According to excitation system trip(ping) circuit electrical principle wiring diagram, carry out
The type selecting of high-power tripping relay and its annex, including tripping relay, relay base, installation guide rail, cable and cable
Annex, the important loop for relating to directly trip should use operation voltage in 55%~70% model of nominal DC power supply voltage
Auxiliary reclay within enclosing, operating power are not less than 5W, and the response time should be greater than 10ms；
4th step：Carry out monomer technical testing to tripping relay, including the measurement of operating voltage range, response time
Measure, and start the measurement of moment coil current, so as to calculate the startup power of tripping relay, to determine selected jump
The technical indicator of lock relay meets the technical requirements of electrical code and power station technological transformation technical measures；
5th step：According to the installation diagram of trip(ping) circuit, two tripping relays are installed to leading inside adjustment of field excitation cabinet
On rail；
6th step：Distribution is connected according to the key wiring diagram of trip(ping) circuit, including relay coil feed cable and auxiliary
Adjuvant grafting point distribution；
7th step：Two-way trip(ping) circuit is tested respectively：On field regulator terminal, respectively with the side of short circuit
Formula, the two-way trip signal that simulation protection equipment is sent, checks the whether positive positive motion of tripping relay for confirming two trip(ping) circuits
Whether work, the whether correct separating brake of degaussing switch, field regulator display screen show outside tripping alarm instruction；
8th step：Respectively under static and idle condition, joint test is carried out to the trip(ping) circuit of excitation system outer protection,
To ensure that excitation system can correctly perform the trip signal sent of protection equipment, accurate tripping degaussing switch, and inversion
Demagnetization, while display " outside tripping operation " police instruction on the spot, instrument is installed to monitor that this outside tripping relay will not miss
Act phenomenon.
Technique effect
The invention discloses the process of preparing of excitation system trip(ping) circuit, purpose is to improve existing excitation system
The type selecting of tripping relay, avoid the occurrence of because tripping relay malfunction causes the accident of chaser, jumped so as to improve excitation system
The accuracy of the action of lock relay, ensure the reliability service of unit.The present invention has the following technical effect that:
1) process of preparing of excitation system trip(ping) circuit of the present invention, it is mainly used in trip(ping) circuit outside excitation system
Prepare, this trip(ping) circuit is to respond the trip signal that the protection equipment from power station unit is sent, to be different from excitation system
The trip(ping) circuit of internal fault.
2) the advantage of the invention is that design is prepared for two sets of identical and independent excitation system trip(ping) circuits, respectively
Receive the trip signal sent from two sets of protection equipments, reach 100% redundancy, be entirely capable of the jump for meeting power station protection equipment
Lock requirement.
3) trip(ping) circuit have selected high-power auxiliary reclay outside excitation system of the present invention, substantially increase trip(ping) circuit
Anti-interference, eliminate tripping relay malfunction hidden danger, reached the precise movement of trip(ping) circuit, this point is for electricity
The safe and reliable operation stood is of crucial importance.In unit running process, the power station equipment beyond energizing apparatus break down and
During chaser, while outlet breaker disconnects, the bright order of protection equipment hair tripping operation starts excitation system to field regulator terminal
The trip(ping) circuit action of system, fast and effeciently to jump degaussing switch with demagnetization, to shift and discharge the energy of rotor windings, is prevented
Rotor windings scaling loss because of overheat.
4) trip(ping) circuit precise movement depends on following three aspect factor outside excitation system：The action of tripping relay
Power, response time and operating voltage range.The operating power for the tripping relay that the present invention uses is more than 5W, during action response
Between be 10ms, operating voltage actuating range is 55~70%, fully meets power plant's code and the anti-technical requirements arranged.
The preparation method of excitation system trip(ping) circuit of the present invention thoroughly prevented energizing apparatus because trip(ping) circuit because of power not
Malfunction enough so as to cause the phenomenon of abnormal chaser.The science and preciseness of the present invention are fully demonstrated.
The present invention it is critical that the type selecting of tripping relay should meet《18 power networks of State Grid Corporation of China are great anti-
Accident measure-relay protection specialty emphasis is implemented to require》Regulation, i.e., " the important loop for relating to directly trip should use
Auxiliary reclay of the operation voltage within 55%~70% scope of nominal DC power supply voltage, operating power are not less than 5W,
Response time should be greater than 10ms ", only meet this requirement, just can guarantee that tripping relay will not malfunction and cause chaser thing
Therefore.
The present invention merely relates to the type selecting of tripping relay, the circuit of trip(ping) circuit and logical design and tripping operation relay
The installation of device and distribution, the advantage is that design is simple, workload is few, rational in infrastructure, and cost is low, and process is easily realized,
But its economic value created is very significantly, has very high cost performance, can be widely applied in excitation system.
Brief description of the drawings
Fig. 1 is excitation system tripping operation major loop key wiring diagram；
Fig. 2 is tripping relay K03, K04 of the present invention coil and auxiliary contact label；
Fig. 3 is excitation system tripping relay K03, K04 of the present invention installation diagram.
In figure, K03 tripping relays 1；K04 tripping relays 2
Embodiment：
A kind of preparation method of excitation system trip(ping) circuit：
The first step:Determine the design of trip(ping) circuit:As shown in figure 1, excitation system includes two-way trip(ping) circuit, respectively
Respond the outside trip signal from two sets of power station protection equipments.Protection equipment is sent to the trip signal of excitation system, mainly according to
Start degaussing switch tripping operation by the precise movement of high-power tripping relay K03, K04 inside energizing apparatus, so as to cut off
Excitation system, protect generating set.
Second step：Design according to trip(ping) circuit carries out the design of the electrical principle wiring drawing of trip(ping) circuit, and
It assembles the design of drawing, as shown in Figure 3；
3rd step：The type selecting of high-power tripping relay：According to excitation system trip(ping) circuit electrical principle wiring diagram, carry out
The type selecting of high-power tripping relay and its annex, including tripping relay, relay base, installation guide rail, cable and cable
Annex；The present invention it is critical that the type selecting of tripping relay should meet《The great anti-accident of 18 power networks of State Grid Corporation of China
Measure-relay protection specialty emphasis is implemented to require》Regulation, i.e., " action should be used by relating to the important loop directly tripped
Auxiliary reclay of the voltage within 55%~70% scope of nominal DC power supply voltage, operating power are not less than 5W, response
Time should be greater than 10ms ", only meet this requirement, just can guarantee that tripping relay will not malfunction and cause chaser accident.
4th step：Carry out monomer technical testing to tripping relay, including the measurement of operating voltage range, response time
Measure, and start the measurement of moment coil current, so as to calculate the startup power of tripping relay, to determine selected jump
The technical indicator of lock relay meets the technical requirements of electrical code and power station technological transformation technical measures；
5th step：According to the installation diagram of trip(ping) circuit, two tripping relays are installed to leading inside adjustment of field excitation cabinet
On rail；
6th step：Distribution is connected according to the key wiring diagram of trip(ping) circuit, including relay coil feed cable and auxiliary
Adjuvant grafting point distribution；
7th step：Two-way trip(ping) circuit is tested respectively：On field regulator terminal, respectively with the side of short circuit
Formula, the two-way trip signal that simulation protection equipment is sent, checks the whether positive positive motion of tripping relay for confirming two trip(ping) circuits
Whether work, the whether correct separating brake of degaussing switch, field regulator display screen show outside tripping alarm instruction；K03 tripping operation relays
Device receives the trip signal that A set protections are sent, its normally opened node closure after action, the main switching winding demagnetization of shunt tripping degaussing switch,
The normally opened node of 12-13 as shown in Figure 2.K04 tripping relays receive the trip signal that B set protections are sent, and its is normally opened after action
Node closes, and shunt tripping degaussing switch is for switching winding, the normally opened node of 22-23 as shown in Figure 2.Selected tripping relay includes 4
To normally opened node, wherein two pairs be used for it is standby.
8th step：Cooperated with power station technology personnel, respectively under static and idle condition, to being protected outside excitation system
Protect trip(ping) circuit and carry out joint test, to ensure that excitation system can correctly perform the trip signal sent of protection equipment, essence
True tripping degaussing switch, and inversion field suppression, while display " outside tripping operation " police instruction on the spot.Further, instrument is installed to supervise
It will not occur to malfunction phenomenon depending on this outside tripping relay.
Claims (1)
1. a kind of process of preparing of excitation system trip(ping) circuit, it is characterized in that：
The first step:Determine the design of trip(ping) circuit:Excitation system includes two-way trip(ping) circuit, and response is from two sets of electricity respectively
The outside trip signal for protection equipment of standing, protection equipment are sent to the trip signal of excitation system, by big inside energizing apparatus
The precise movement of power tripping relay trips to start degaussing switch, so as to cut off excitation system, protects generating set；
Second step：Design according to trip(ping) circuit carries out the design of the electrical principle wiring drawing of trip(ping) circuit, and its dress
Design with drawing；
3rd step：The type selecting of high-power tripping relay：According to excitation system trip(ping) circuit electrical principle wiring diagram, big work(is carried out
The type selecting of rate tripping relay and its annex, including tripping relay, relay base, installation guide rail, cable and cable accessory,
The important loop for relating to directly trip should use operation voltage nominal DC power supply voltage 55%~70% scope with
Interior auxiliary reclay, operating power are not less than 5W, and the response time should be greater than 10ms；
4th step：Monomer technical testing is carried out to tripping relay, includes measurement, the survey of response time of operating voltage range
It is fixed, and start the measurement of moment coil current, so as to calculate the startup power of tripping relay, to determine selected tripping operation
The technical indicator of relay meets the technical requirements of electrical code and power station technological transformation technical measures；
5th step：According to the installation diagram of trip(ping) circuit, two tripping relays are installed on the guide rail inside adjustment of field excitation cabinet；
6th step：Distribution is connected according to the key wiring diagram of trip(ping) circuit, including relay coil feed cable and auxiliary connect
Point distribution；
7th step：Two-way trip(ping) circuit is tested respectively：On field regulator terminal, respectively in a manner of short circuit, mould
Intend the two-way trip signal that protection equipment is sent, check and confirm whether the tripping relay of two trip(ping) circuits correctly acts, goes out
Whether the whether correct separating brake of magnetic switch, field regulator display screen show outside tripping alarm instruction；
8th step：Respectively under static and idle condition, joint test is carried out to the trip(ping) circuit of excitation system outer protection, with true
The trip signal sent of protection equipment, accurate tripping degaussing switch, and inversion field suppression can correctly be performed by protecting excitation system,
Show " outside tripping operation " police instruction on the spot simultaneously, instrument is installed to monitor that this outside tripping relay will not occur to malfunction now
As.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638679.0A CN107394751B (en) | 2017-07-31 | 2017-07-31 | The process of preparing of excitation system trip(ping) circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638679.0A CN107394751B (en) | 2017-07-31 | 2017-07-31 | The process of preparing of excitation system trip(ping) circuit |
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| Publication Number | Publication Date |
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| CN107394751A true CN107394751A (en) | 2017-11-24 |
| CN107394751B CN107394751B (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710638679.0A Active CN107394751B (en) | 2017-07-31 | 2017-07-31 | The process of preparing of excitation system trip(ping) circuit |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741023A (en) * | 1986-12-23 | 1988-04-26 | General Electric Company | On-line test and diagnostic system for power system stabilizer |
| CN106935115A (en) * | 2015-12-29 | 2017-07-07 | 中国电力科学研究院 | A kind of method for building up of generator excited system load module |
-
2017
- 2017-07-31 CN CN201710638679.0A patent/CN107394751B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741023A (en) * | 1986-12-23 | 1988-04-26 | General Electric Company | On-line test and diagnostic system for power system stabilizer |
| CN106935115A (en) * | 2015-12-29 | 2017-07-07 | 中国电力科学研究院 | A kind of method for building up of generator excited system load module |
Non-Patent Citations (1)
| Title |
|---|
| 蒋苏静等: "220kV断路器操作回路的优化配合研究", 《高压电器》 * |
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| CN107394751B (en) | 2019-01-18 |
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