CN101976817B - Start-up protection method and device for commissioning of electric equipment - Google Patents
Start-up protection method and device for commissioning of electric equipment Download PDFInfo
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- CN101976817B CN101976817B CN 201010275533 CN201010275533A CN101976817B CN 101976817 B CN101976817 B CN 101976817B CN 201010275533 CN201010275533 CN 201010275533 CN 201010275533 A CN201010275533 A CN 201010275533A CN 101976817 B CN101976817 B CN 101976817B
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Abstract
The invention discloses a start-up protection method and a start-up protection device for commissioning of electric equipment. A start-up protection device 2n for the current setting, delay and execution of the electric equipment is adopted; an A phase current relay, a B phase current relay, a C phase current relay and a D phase zero sequence current relay which are adopted by setting currents are used for setting the currents of the electric equipment; logic current values for commissioning is set to be more than or equal to 1; current signals of which the set logic current values are more than or equal to 1 are delayed; the delayed current signals are transmitted to a trip executing device; the trip executing device makes platens of a first group of trip outlets LP1 and a second group of trip outlets LP2 of a protection screen control loop of the electric equipment simultaneously input by using an execution relay so as to protect the protection screen control loop. The start-up protection method and the start-up protection device can realize an adaptive input supply power, visually and conveniently set the currents, avoid error setting of constant values caused by human factors, have fast inspection time and high working efficiency, are easy to operate and reduce the labor intensity of workers.
Description
Technical field
The present invention relates to the technical field of relay protection of electrical network, be particularly useful for interim a kind of method of the starting protection for commissioning of electric equipment and the device that increases charge protection or charge protection is increased to the delay tripping function of the needs such as ultra-high-tension power transmission line trial run, transformer trial run.
Background technology
Along with the expanding day of electrical network network architecture, transformer station's quantity increasing day by day, make the frequency of utilization that installs provisional charge protection device in new equipment trial run work additional also constantly increase.At present, in transmission line or transformer trial run work, the interim traditional charge protection device increased is formed by connecting according to certain mode of connection by test lead by a plurality of relays independently., there is certain potential safety hazard in its wiring complexity.Simultaneously, not only the selection of its relay must meet the requirement of trial run equipment secondary voltage grade and the requirement of protection definite value advice note, and must carry out one by one the verification of operating current and operate time to its relay.Usually the also relay of verification of adjusting needs about 10 minutes, and this checkout procedure time loss is longer, affects operating efficiency.
In sum, owing to adopting above multiple relay to connect, hand labor intensity increases, inefficiency.Especially when wiring generation mistake, the generation easily caused the accident.
Summary of the invention
In order to realize that transmission line, transformer trial run etc. need the interim work that increases charge protection or charge protection is increased to the delay tripping function, the invention provides a kind of method of the starting protection for commissioning of electric equipment and device, there is the definite value of adjusting directly perceived, reduce the definite value tuning error that human factor causes; And have that generalization, standardization, volume are little, lightweight, the characteristics of easy operating.
For achieving the above object, the present invention adopts following technical scheme:
A kind of method of the starting protection for commissioning of electric equipment, be the starting protection device 2N that adopts the current calibration have electric equipment, time delay, execution, and its step is as follows:
I, setting current, adopt A phase current relay, B phase current relay, C phase current relay, the N phase residual current relay current calibration to electric equipment;
II, the signal of logical value >=1 is carried out to time delay, and the signal of time delay is transported to the execution tripgear;
III, execution tripgear adopt carries out relay, the pressing plate of " first group of tripping operation outlet LP1 " of electric equipment protection screen control loop is dropped into, 101 ends of protection screen control loop are electrically connected to R133 "; the pressing plate of " second group of tripping operation outlet LP2 " of protection screen control loop is dropped into, and 201 ends of protection screen control loop are electrically connected to R233 ";
IV, according to adjusted definite value, add A, B, C three-phase current to this device respectively, band bus connection switch actual verification loop correctness;
V, on bus connection switch can correctly trip basis, current circuit on protection screen is accessed to this device, complete interim increase charge protection or charge protection increased to the delay tripping function.
A kind of method of the starting protection for commissioning of electric equipment, working power+KM of described starting protection device 2N ,-KM, open 1ZK to protection screen device positive-negative power by voltage change-over switch, sky.
A kind of device of the starting protection for commissioning of electric equipment, there is the judgement three-phase current, charge protection increased to the starting protection device 2N of delay tripping function, described starting protection device 2N end+the KM end ,-the KM end is connected to the positive and negative power end of protection screen device by voltage change-over switch 1N, air switch 1ZK; The input of described starting protection device 2N connects the O end of three-phase current A end, B end, C end and the zero-sequence current of bus connection switch, and terminal Ia, Ib, Ic, the In of described starting protection device 2N are connected to the bus connection switch current circuit; Outlet 101 ends of described starting protection device 2N are connected with outlet R133 end by first group of tripping operation gate out switch LP1 of pressing plate, and outlet 201 ends of described starting protection device 2N are connected with outlet R233 end by second group of tripping operation gate out switch LP2 of pressing plate.
A kind of device of the starting protection for commissioning of electric equipment, starting protection device 2N comprises: the relay group of three-phase current and zero-sequence current, the time relay, auxiliary relay, and each relay winding of described relay group is connected to respectively terminal IA, IB, IC, the I0 of bus connection switch current circuit; Normal open switch one end of each relay of described relay group is connected to voltage+KM, and the normal open switch other end is connected to voltage-KM by time relay winding; Normal open switch one end of the time relay is connected to voltage+KM, and the normal open switch other end is connected to voltage-KM by the auxiliary relay winding; Auxiliary relay has two groups of normal open switch, and one group of normal open switch one end connects 101 ends of protection screen device, and the normal open switch other end is connected with outlet R133 end by first group of tripping operation gate out switch LP1 of pressing plate; Another group normal open switch one end connects 201 ends of protection screen device, and the normal open switch other end is connected with port of export R133 by second group of tripping operation gate out switch LP2 of pressing plate.
A kind of device of the starting protection for commissioning of electric equipment, described voltage change-over switch 1N is set to voltage 220v shelves, voltage 110v shelves, voltage 36v shelves, voltage 24v shelves.
Owing to adopting technical scheme as above, the present invention has following superiority:
1, use former increase relay to complete interim increase charge protection or when charge protection is increased to the delay tripping function, need transformation in use and increase loop more, need 20 multiple conducting wires, the principle complexity, careless slightlyly easily cause " mis-wired ", and new device only need to access 8 wires, and connection principle is simple and clear, setting up time is short, easy to operate; Because relay itself is had relatively high expectations and made the transformer station for different electric pressures to be assembled with the different model relay operating voltage range.This device operating voltage from direct current 24V to direct current 220V scope in self adaptation, it is extremely convenient to use.
2, use former increase relay to complete interim increase charge protection or use a plurality of relays when charge protection is increased to the delay tripping function, floor space is larger, and each relay must be proofreaded and greatly increase built-up time before using; And easily because of " mistake is touched ", be short-circuited or misoperation between each wire and relay, this device is introduced " modularization " concept, there are numerous characteristics such as generalization, standardization, volume are little, lightweight, easy operating, ratio of precision relay-type retrospective installation improves greatly, and short circuit between the loop of having stopped to cause due to the problem of device own.
In order to realize that transmission line, transformer trial run etc. need the interim work that increases charge protection or charge protection is increased to the delay tripping function, this device is introduced " modularization " concept, by realizing adjust operating current and operate time the control to the circuit breaker trip loop; According to the trial run fixed value list, the 2N device is adjusted (comprising size of current and tripping operation time delay), this device is adjusted size intuitively, more convenient than adjusting of relay-set definite value, reduces the definite value tuning error that human factor causes.
The accompanying drawing explanation
Fig. 1 is trial run starting protection device panel schematic diagram;
Fig. 2 is the circuit diagram of trial run starting protection device;
Embodiment
As shown in Figure 1, 2; a kind of method of the starting protection for commissioning of electric equipment; the starting protection device 2N that adopts the current calibration have electric equipment, time delay, execution; working power+KM of described starting protection device 2N ,-KM, open 1ZK to protection screen device positive-negative power by voltage change-over switch, sky.
Its step is as follows:
I, setting current, adopt A phase current relay, B phase current relay, C phase current relay, the D phase residual current relay current calibration to electric equipment;
II, the current signal of the logical value of adjusting >=1 is carried out to time delay, and the current signal of time delay is transported to the execution tripgear; The electric current of logical value >=1 adjusted is: when A, B, C three-phase current are set the 5A electric current, logical value is that 1, A, B, C three-phase current are greater than the 5A electric current and think logical value >=1 of adjusting.
III, execution tripgear adopt carries out relay, the pressing plate of " first group of tripping operation outlet LP1 " of electric equipment protection screen control loop is dropped into, 101 ends of protection screen control loop are electrically connected to R133 "; the pressing plate of " second group of tripping operation outlet LP2 " of protection screen control loop is dropped into, and 201 ends of protection screen control loop are electrically connected to R233 ";
IV, according to adjusted definite value, add A, B, C three-phase current to this device respectively, band bus connection switch actual verification loop correctness;
V, on bus connection switch can correctly trip basis, current circuit on protection screen is accessed to this device, complete interim increase charge protection or charge protection increased to the delay tripping function.
A kind of device of the starting protection for commissioning of electric equipment, there is the judgement three-phase current, charge protection increased to the starting protection device 2N of delay tripping function, described starting protection device 2N end+the KM end ,-the KM end is connected to the positive and negative power end of protection screen device by voltage change-over switch 1N, air switch 1ZK; The input of described starting protection device 2N connects the O end of three-phase current A end, B end, C end and the zero-sequence current of bus connection switch, and terminal Ia, Ib, Ic, the In of described starting protection device 2N are connected to the bus connection switch current circuit; Outlet 101 ends of described starting protection device 2N are connected with outlet R133 end by first group of tripping operation gate out switch LP1 of pressing plate, and outlet 201 ends of described starting protection device 2N are connected with outlet R233 end by second group of tripping operation gate out switch LP2 of pressing plate.
Described starting protection device 2N comprises: the relay group of three-phase current and zero-sequence current, the time relay, auxiliary relay, and each relay winding of described relay group is connected to respectively terminal IA, IB, IC, the I0 of bus connection switch current circuit; Normal open switch one end of each relay of described relay group is connected to voltage+KM, and the normal open switch other end is connected to voltage-KM by time relay winding; Normal open switch one end of the time relay is connected to voltage+KM, and the normal open switch other end is connected to voltage-KM by the auxiliary relay winding; Auxiliary relay has two groups of normal open switch, and one group of normal open switch one end connects 101 ends of protection screen device, and the normal open switch other end is connected with outlet R133 end by first group of tripping operation gate out switch LP1 of pressing plate; Another group normal open switch one end connects 201 ends of protection screen device, and the normal open switch other end is connected with port of export R133 by second group of tripping operation gate out switch LP2 of pressing plate.
Described voltage change-over switch 1n is set to voltage 220v shelves, voltage 110v shelves, voltage 36v shelves, voltage 24v shelves.
Before use, by protection screen device positive-negative power access respectively this device+KM ,-KM, open 1ZK owing to installing sky additional, can not affect the protection screen power supply while guaranteeing to occur in this device inside the faults such as short circuit; According to fixed value list or trial run scheme, the 2N device is adjusted and comprised size of current and tripping operation time delay, by outlet " 101, R133 " shown in Fig. 1, " 201, R233 " access protection screen control loop, will " first group of tripping operation outlet LP1 ", " second group of tripping operation outlet LP2 " pressing plate drops into; Be connected to respectively the bus connection switch current circuit of protection screen device by terminal Ia, Ib, Ib, the In of integrated module 2N according to adjusted definite value; And add A, B, C three-phase current to this device; Task, band bus connection switch actual verification loop correctness; On bus connection switch can correctly trip basis, complete interim increase charge protection or charge protection is increased to the delay tripping function.
During work: mother A, B, C and zero-sequence current are introduced respectively terminal Ia, Ib, Ic, the In of integrated module 2N, when arbitrary group of electric current surpasses the definite value size, terminal Ia, the Ib of corresponding integrated module 2N, current relay junction closure, time relay excitation, the auxiliary relay excitation in Ic, In, the auxiliary relay closure, make pressing plate connect " 101-R133 ", connect " 201-R233 " two groups of outlet loop nodes, start the bus connection switch tripping operation.
In order to realize this installation's power source voltage adaptive, adopt following methods: due to different substation secondary direct current system electric pressure difference, some is the 220V electric pressure, some is the 110V electric pressure, cause and use former increase relay to complete interim increase charge protection or when charge protection is increased to the delay tripping function, relay can't be realized general, and the RXTUG 22H rectification plug-in unit that this device adopts an ABB AB to produce carries out rectification to input power, as figure mono-device 1N, input voltage all can be realized self adaptation at direct current 24V-250V, input power voltage after the rectification of 1N device is more accurate, more stable.
Claims (5)
1. the method for the starting protection for commissioning of electric equipment is characterized in that: be the starting protection device 2N that adopts the current calibration that has electric equipment, time delay, execution, its step is as follows:
I, setting current, adopt A phase current relay, B phase current relay, C phase current relay, the D phase residual current relay current calibration to electric equipment, the logic current value of the trial run of adjusting >=1;
II, the current signal of logic current value >=1 of adjusting is carried out to time delay, and the current signal of time delay is transported to the execution tripgear;
III, carry out tripgear and adopt the execution relay, the pressing plate of " first group of tripping operation outlet LP1 " of electric equipment protection screen control loop is dropped into, " first end (101) of the protection screen control loop that one group of normal open switch of auxiliary relay, one end connects is electrically connected to the port of export (R133) of first group of tripping operation gate out switch LP1 of pressing plate ", the pressing plate of " second group of tripping operation outlet LP2 " of protection screen control loop is dropped into, " port of export (R233) of second group of tripping operation gate out switch LP2 of the second end (201) and pressing plate of the protection screen control loop that another group normal open switch one end of auxiliary relay connects is electrically connected to ",
IV, according to adjusted definite value, add A, B, C three-phase current and zero-sequence current to this device respectively, band bus connection switch actual verification loop correctness;
V, on bus connection switch can correctly trip basis, by current circuit access starting protection device 2N on protection screen, complete interim increase charge protection or charge protection increased to the delay tripping function.
2. a kind of method of the starting protection for commissioning of electric equipment as claimed in claim 1 is characterized in that: working power+KM of described starting protection device 2N ,-KM, by voltage change-over switch, air switch 1ZK to protection screen device positive-negative power.
3. implement the claims a kind of device of the starting protection for commissioning of electric equipment of 1 described method, it is characterized in that: have the starting protection device 2N that judges three-phase current, charge protection is increased to the delay tripping function, the working power of described starting protection device 2N+KM end, working power-KM end are connected to the positive and negative power end of protection screen device by voltage change-over switch 1N, air switch 1ZK; The input of described starting protection device 2N connects the O end of three-phase current A end, B end, C end and the zero-sequence current of bus connection switch, and terminal Ia, Ib, Ic, the In of described starting protection device 2N are connected to the bus connection switch current circuit; First port of export of described starting protection device 2N is that the first end (101) of described protection screen control loop is connected with the port of export (R133) of described switch LP1 by first group of tripping operation gate out switch LP1 of pressing plate, and second port of export of described starting protection device 2N is that second end (201) of described protection screen control loop is connected with the port of export (R233) of described switch LP2 by second group of tripping operation gate out switch LP2 of pressing plate.
4. a kind of device of the starting protection for commissioning of electric equipment as claimed in claim 3, it is characterized in that: starting protection device 2N comprises: the relay group of three-phase current and zero-sequence current, the time relay, auxiliary relay, and each relay winding of described relay group is connected to respectively terminal IA, IB, IC, the IO of bus connection switch current circuit; Normal open switch one end of each relay of described relay group is connected to working power+KM, and the normal open switch other end is connected to working power-KM by time relay winding; Normal open switch one end of the time relay is connected to working power+KM, and the normal open switch other end is connected to working power-KM by the auxiliary relay winding; Auxiliary relay has two groups of normal open switch, and one group of normal open switch one end connects the first end (101) of protection screen device, and the other end is connected with the port of export (R133) of described switch LP1 by first group of tripping operation gate out switch LP1 of pressing plate; Another group normal open switch one end connects second end (201) of protection screen device, and the other end is connected with the port of export (R233) of described switch LP2 by second group of tripping operation gate out switch LP2 of pressing plate.
5. a kind of device of the starting protection for commissioning of electric equipment as claimed in claim 3, it is characterized in that: described voltage change-over switch 1N is set to voltage 220v shelves, voltage 110v shelves, voltage 36v shelves, voltage 24v shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275533 CN101976817B (en) | 2010-09-08 | 2010-09-08 | Start-up protection method and device for commissioning of electric equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275533 CN101976817B (en) | 2010-09-08 | 2010-09-08 | Start-up protection method and device for commissioning of electric equipment |
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| Publication Number | Publication Date |
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| CN101976817A CN101976817A (en) | 2011-02-16 |
| CN101976817B true CN101976817B (en) | 2013-12-18 |
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| CN103489259B (en) * | 2013-08-16 | 2016-06-29 | 国家电网公司 | A kind of high-voltage user local cost control intelligent electric energy meter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094863A (en) * | 1993-04-20 | 1994-11-09 | 陈策沾 | The guard method of three-phase electric equipment and automatic protector for electrical equipment thereof |
| JP3725468B2 (en) * | 2001-12-25 | 2005-12-14 | 三菱電機株式会社 | Ground fault relay system in multiple direct grounding system |
| CN101432941A (en) * | 2006-10-18 | 2009-05-13 | Abb技术有限公司 | Load compensation in distance protection of three-phase electric power line |
| CN201533150U (en) * | 2009-09-25 | 2010-07-21 | 北京和利时自动化驱动技术有限公司 | Signal collection controller |
-
2010
- 2010-09-08 CN CN 201010275533 patent/CN101976817B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094863A (en) * | 1993-04-20 | 1994-11-09 | 陈策沾 | The guard method of three-phase electric equipment and automatic protector for electrical equipment thereof |
| JP3725468B2 (en) * | 2001-12-25 | 2005-12-14 | 三菱電機株式会社 | Ground fault relay system in multiple direct grounding system |
| CN101432941A (en) * | 2006-10-18 | 2009-05-13 | Abb技术有限公司 | Load compensation in distance protection of three-phase electric power line |
| CN201533150U (en) * | 2009-09-25 | 2010-07-21 | 北京和利时自动化驱动技术有限公司 | Signal collection controller |
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