CN203312765U - An apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection - Google Patents
An apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection Download PDFInfo
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- CN203312765U CN203312765U CN2013202665068U CN201320266506U CN203312765U CN 203312765 U CN203312765 U CN 203312765U CN 2013202665068 U CN2013202665068 U CN 2013202665068U CN 201320266506 U CN201320266506 U CN 201320266506U CN 203312765 U CN203312765 U CN 203312765U
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- relay
- contact
- microcomputer protection
- transformer
- intermediate relay
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Abstract
The utility model relates to an apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection. The apparatus used for eliminating influence of the induction voltage on transformer microcomputer protection comprises a microcomputer protection unit, a gas relay WS and a temperature relay WJ. The gas relay WS and the temperature relay WJ are installed on a transformer body. Contacts of the gas relay WS and the temperature relay WJ are connected with a coil of an intermediate relay module. A contact of the intermediate relay module is connected with an input terminal of the microcomputer protection unit. An output terminal of the microcomputer protection unit is connected with a trip-out loop and a closing loop. The intermediate relay module is added to the apparatus. Even if the induction voltage is generated, the induction voltage can not reach a capacity which enables motions, so that the trip-out loop and the closing loop will not be influenced. If a normal accident happens, the contacts of the temperature relay WJ and the gas relay WS will be connected to a control power supply, and the coil of the intermediate relay module will be electrified. A normal open contact of the intermediate relay module will be closed and a microcomputer protection chip UI switch on the trip-out loop and the closing loop, so than correct motions are protected.
Description
Technical field
The utility model belongs to the technical field of relay protection of electric power system, is specifically related to a kind of be used to eliminating the device of induced voltage on the transformer microcomputer protection impact.
Background technology
Transformer is the device that changes alternating voltage, it is electrical energy transfer or as the critical elements of signal transmission, function with AC voltage conversion, circuit coupling, impedance transformation and circuit isolation, it is indispensable important component part in electric power system, in case transformer breaks down, will affect normal power supply, cause inconvenience.
According to rules, 0.8MVA and above transformer all fill body gas, temperature protection, to reflect in time the internal fault of transformer exception and excision transformer.10kV user's high-tension apparatus secondary connection is simple; the control signal loop is less; so directly with 10kV, press the control power supply of the alternating current 220V voltage of change output as secondary; if but in control cables a certain core incoming transport power supply, other core can produce induced voltage, because the Microcomputer Protection precision is high; be quick on the draw; this induced voltage easily causes the Microcomputer Protection mistake to post a letter, and misoperation, can't meet the needs that field apparatus moves.
Summary of the invention
The purpose of this utility model is to provide a kind of be used to eliminating the device of induced voltage on the transformer microcomputer protection impact; this equipment safety is reliable; can eliminate the impact of induced voltage on transformer microcomputer protection; avoid producing the transformer microcomputer protection misoperation caused due to induced voltage; in addition, the utility model also has the simple advantage of wiring.
For achieving the above object; the technical scheme that the utility model adopts is: a kind of be used to eliminating the device of induced voltage on the transformer microcomputer protection impact; comprise the Microcomputer Protection unit; and be arranged on Buchholz relay WS and the temperature relay WJ on transformer body; the contact of described Buchholz relay WS, temperature relay WJ is connected with the coil of auxiliary relay module; the contact of auxiliary relay module is connected with the input of Microcomputer Protection unit, and the output of Microcomputer Protection unit is connected with trip(ping) circuit, closing circuit.
Simultaneously, the utility model can also be able to further realization by following technical measures:
Further, described Microcomputer Protection unit adopts Microcomputer Protection chip U1, and described auxiliary relay module is comprised of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4, and described trip(ping) circuit comprises breaking coil TQ; The contact of the contact of first and second contact WS1, the WS2 of Buchholz relay WS, first and second contact WJ1, the WJ2 of temperature relay WJ is connected with the coil of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 respectively; the normally opened contact of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 is connected with the 7th, 9,11,13 pins of Microcomputer Protection chip U1 respectively, and the 6th pin of Microcomputer Protection chip U1 is connected with breaking coil TQ by circuit breaker Q F2.
Preferably, first of described Buchholz relay WS, two point WS1, the fixed contact of WS2, first of temperature relay WJ, two point WJ1, after the fixed contact parallel connection of WJ2, meet 10kV by circuit breaker Q F1 and press change contact WCa, first of Buchholz relay WS, two point WS1, the moving contact of WS2, first of temperature relay WJ, two point WJ1, the moving contact of WJ2 is respectively with first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, one end of the coil of ZJ4 is connected, first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, after the other end parallel connection of the coil of ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCn.
Preferably; the 7th pin of described Microcomputer Protection chip U1 is connected with the moving contact of the first intermediate relay ZJ 1 by the trip protection pressing plate; the 9th pin of Microcomputer Protection chip U1 is connected with the moving contact of the second intermediate relay ZJ 2 by the trip protection pressing plate; the 11st, 13 pins of Microcomputer Protection chip U1 are connected with the moving contact of third and fourth intermediate relay ZJ 3, ZJ4 respectively, after the fixed contact parallel connection of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCa.
Further, the other end of described breaking coil TQ meets 10kV by circuit breaker Q F1 and presses change contact WCn.
Preferably, described 10kV presses and becomes logical 220V alternating current between contact WCa, 10kV pressure change contact WCn.
The beneficial effects of the utility model are: this device has increased the auxiliary relay module, even produce induced voltage, yet induced voltage can't reach the capacity that makes it to move, and can't affect tripping operation, closing circuit.If normal accident occurs; the temperature relay WJ of transformer body, the contacting of Buchholz relay WS are controlled power supply, and the coil of auxiliary relay module is charged, the normally opened contact closure of auxiliary relay module; Microcomputer Protection chip U1 connects tripping operation, closing circuit, makes to protect correct operation.Therefore, this device can effectively solve the transformer microcomputer protection misoperation that induced voltage causes.
The accompanying drawing explanation
Fig. 1 is the wiring schematic diagram of prior art;
Fig. 2 is wiring schematic diagram of the present utility model.
In figure, the implication of mark is as follows:
1-trip protection pressing plate
Embodiment
As shown in Figure 2; a kind of be used to eliminating the device of induced voltage on the transformer microcomputer protection impact; comprise the Microcomputer Protection unit; and be arranged on Buchholz relay WS and the temperature relay WJ on transformer body; the contact of described Buchholz relay WS, temperature relay WJ is connected with the coil of auxiliary relay module; the contact of auxiliary relay module is connected with the input of Microcomputer Protection unit, and the output of Microcomputer Protection unit is connected with trip(ping) circuit, closing circuit.
Described Microcomputer Protection unit adopts Microcomputer Protection chip U1, and described auxiliary relay module is comprised of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4, and described trip(ping) circuit comprises breaking coil TQ; The contact of the contact of first and second contact WS1, the WS2 of Buchholz relay WS, first and second contact WJ1, the WJ2 of temperature relay WJ is connected with the coil of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 respectively; the normally opened contact of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 is connected with the 7th, 9,11,13 pins of Microcomputer Protection chip U1 respectively, and the 6th pin of Microcomputer Protection chip U1 is connected with breaking coil TQ by circuit breaker Q F2.
First of described Buchholz relay WS, two point WS1, the fixed contact of WS2, first of temperature relay WJ, two point WJ1, after the fixed contact parallel connection of WJ2, meet 10kV by circuit breaker Q F1 and press change contact WCa, first of Buchholz relay WS, two point WS1, the moving contact of WS2, first of temperature relay WJ, two point WJ1, the moving contact of WJ2 is respectively with first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, one end of the coil of ZJ4 is connected, first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, after the other end parallel connection of the coil of ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCn.
The 7th pin of described Microcomputer Protection chip U1 is connected with the moving contact of the first intermediate relay ZJ 1 by the trip protection pressing plate; the 9th pin of Microcomputer Protection chip U1 is connected with the moving contact of the second intermediate relay ZJ 2 by the trip protection pressing plate; the 11st, 13 pins of Microcomputer Protection chip U1 are connected with the moving contact of third and fourth intermediate relay ZJ 3, ZJ4 respectively, after the fixed contact parallel connection of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCa.
The other end of described breaking coil TQ meets 10kV by circuit breaker Q F1 and presses change contact WCn.Described 10kV presses and becomes logical 220V alternating current between contact WCa and 10kV pressure change contact WCn.
Below in conjunction with Fig. 2, the course of work of the present utility model is further described.
When transformer exception, the closing of contact of the contact of the second contact WJ2 of temperature relay WJ or the second contact WS2 of Buchholz relay WS, make the coil of the 3rd intermediate relay ZJ 3 or the 4th intermediate relay ZJ 4 charged, the normally opened contact closure of the 3rd intermediate relay ZJ 3 or the 4th intermediate relay ZJ 4,10kV presses the power supply that becomes contact WCa by the contact access Microcomputer Protection chip U1 of the 3rd intermediate relay ZJ 3 or the 4th intermediate relay ZJ 4, Microcomputer Protection chip U1 sends the signal of transformer exception, and breaking coil TQ is failure to actuate;
When transformer fault; the closing of contact of the contact of the first contact WJ1 of temperature relay WJ or the first contact WS1 of Buchholz relay WS; make the coil of the first intermediate relay ZJ 1 or the second intermediate relay ZJ 2 charged; the normally opened contact closure of the first intermediate relay ZJ 1 or the second intermediate relay ZJ 2; 10kV presses the power supply that becomes contact WCa by the contact access Microcomputer Protection chip U1 of the first intermediate relay ZJ 1 or the second intermediate relay ZJ 2; Microcomputer Protection chip U1 sends the signal of transformer fault; breaking coil TQ action, switch trip.
Because pressing, 10kV becomes logical 220V alternating current between contact WCa and 10kV pressure change contact WCn; induced voltage still exists; but because its capacity of induced voltage is less; not enough so that first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 action, Microcomputer Protection unit mistake is posted a letter so it can effectively be eliminated, misoperation.
In sum, the utility model has increased the auxiliary relay module, even produce induced voltage, yet induced voltage can't reach the capacity that makes it to move, and can't affect tripping operation, closing circuit.If normal accident occurs; the temperature relay WJ of transformer body, the contacting of Buchholz relay WS are controlled power supply, and the coil of auxiliary relay module is charged, the normally opened contact closure of auxiliary relay module; Microcomputer Protection chip U1 connects tripping operation, closing circuit, makes to protect correct operation.Therefore, this device can effectively solve the transformer microcomputer protection misoperation that induced voltage causes.
Claims (6)
1. one kind be used to eliminating the device of induced voltage on transformer microcomputer protection impact; comprise the Microcomputer Protection unit; and be arranged on Buchholz relay WS and the temperature relay WJ on transformer body; it is characterized in that: the contact of described Buchholz relay WS, temperature relay WJ is connected with the coil of auxiliary relay module; the contact of auxiliary relay module is connected with the input of Microcomputer Protection unit, and the output of Microcomputer Protection unit is connected with trip(ping) circuit.
2. according to claim 1 be used to eliminating the device of induced voltage on the transformer microcomputer protection impact, it is characterized in that: described Microcomputer Protection unit adopts Microcomputer Protection chip U1, described auxiliary relay module is comprised of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4, and described trip(ping) circuit comprises breaking coil TQ; The contact of the contact of first and second contact WS1, the WS2 of Buchholz relay WS, first and second contact WJ1, the WJ2 of temperature relay WJ is connected with the coil of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 respectively; the normally opened contact of first, second, third and fourth intermediate relay ZJ 1, ZJ2, ZJ3, ZJ4 is connected with the 7th, 9,11,13 pins of Microcomputer Protection chip U1 respectively, and the 6th pin of Microcomputer Protection chip U1 is connected with breaking coil TQ by circuit breaker Q F2.
3. according to claim 2 be used to eliminating the device of induced voltage on the transformer microcomputer protection impact, it is characterized in that: first of described Buchholz relay WS, two point WS1, the fixed contact of WS2, first of temperature relay WJ, two point WJ1, after the fixed contact parallel connection of WJ2, meet 10kV by circuit breaker Q F1 and press change contact WCa, first of Buchholz relay WS, two point WS1, the moving contact of WS2, first of temperature relay WJ, two point WJ1, the moving contact of WJ2 is respectively with first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, one end of the coil of ZJ4 is connected, first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, after the other end parallel connection of the coil of ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCn.
4. according to claim 2 be used to eliminating the device of induced voltage on the transformer microcomputer protection impact, it is characterized in that: the 7th pin of described Microcomputer Protection chip U1 is connected with the moving contact of the first intermediate relay ZJ 1 by trip protection pressing plate (1), the 9th pin of Microcomputer Protection chip U1 is connected with the moving contact of the second intermediate relay ZJ 2 by trip protection pressing plate (1), the 11st of Microcomputer Protection chip U1, 13 pins are respectively with the 3rd, four intermediate relay ZJ 3, the moving contact of ZJ4 is connected, first, two, three, four intermediate relay ZJ 1, ZJ2, ZJ3, after the fixed contact parallel connection of ZJ4, meet 10kV by circuit breaker Q F1 and press change contact WCa.
5. according to claim 2 be used to eliminating the device of induced voltage on the transformer microcomputer protection impact, it is characterized in that: the other end of described breaking coil TQ meets 10kV by circuit breaker Q F1 and presses change contact WCn.
6. according to claim 3 be used to eliminating the device of induced voltage on the transformer microcomputer protection impact, it is characterized in that: described 10kV presses and becomes logical 220V alternating current between contact WCa, 10kV pressure change contact WCn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202665068U CN203312765U (en) | 2013-05-16 | 2013-05-16 | An apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202665068U CN203312765U (en) | 2013-05-16 | 2013-05-16 | An apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312765U true CN203312765U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202665068U Expired - Fee Related CN203312765U (en) | 2013-05-16 | 2013-05-16 | An apparatus used for eliminating influence of an induction voltage on transformer microcomputer protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311887A (en) * | 2013-05-16 | 2013-09-18 | 安徽电力铜陵县供电有限责任公司 | Device for removing influence of inductive voltage on transformer microcomputer protection |
| CN109830938A (en) * | 2019-02-25 | 2019-05-31 | 山东钢铁股份有限公司 | Main transformer body grave gas protects circuit and method |
-
2013
- 2013-05-16 CN CN2013202665068U patent/CN203312765U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311887A (en) * | 2013-05-16 | 2013-09-18 | 安徽电力铜陵县供电有限责任公司 | Device for removing influence of inductive voltage on transformer microcomputer protection |
| CN103311887B (en) * | 2013-05-16 | 2016-12-28 | 安徽电力铜陵县供电有限责任公司 | For eliminating the device that transformer microcomputer protection is affected by induced voltage |
| CN109830938A (en) * | 2019-02-25 | 2019-05-31 | 山东钢铁股份有限公司 | Main transformer body grave gas protects circuit and method |
| CN109830938B (en) * | 2019-02-25 | 2024-04-02 | 山东钢铁股份有限公司 | Main transformer body heavy gas protection circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |