CN202217596U - Secondary loop control circuit for operation mechanism of isolating switch - Google Patents
Secondary loop control circuit for operation mechanism of isolating switch Download PDFInfo
- Publication number
- CN202217596U CN202217596U CN2011203704408U CN201120370440U CN202217596U CN 202217596 U CN202217596 U CN 202217596U CN 2011203704408 U CN2011203704408 U CN 2011203704408U CN 201120370440 U CN201120370440 U CN 201120370440U CN 202217596 U CN202217596 U CN 202217596U
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- China
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- control
- phase voltage
- voltage relay
- control circuit
- isolating switch
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Abstract
The utility model relates to a secondary loop control circuit for an operation mechanism of an isolating switch used in a transformer substation. The secondary loop control circuit comprises a DC control part and an AC operation part, and is characterized in that a three-phase voltage relay (KA) is connected in series with a three-phase power supply line of the AC operation part; and output contacts (K1, KA2, KA3) of the three-phase voltage relay (KA) are connected in series with a control loop of the DC control part. Through adding the three-phase voltage relay, the utility model realizes that the self-perpetuation of a switch on/off contactor is released once disconnecting the AC control power supply when the DC control loop power supply is switched on, so that the problem of error switch on/off existing in an AC/DC hybrid control isolating switch is solved, error operation of the isolating switch is effectively prevented, and nip in the bud, safe operation of the transformer substation is effectively ensured, and personal security, devices and power grid are all powerfully guaranteed.
Description
Technical field
The utility model relates to a kind of secondary circuit control circuit of substation isolating-switch operating mechanism.
Background technology
The operating mechanism secondary circuit of superhigh pressure substation isolating-switch mainly is divided into two parts, and one is the DC control part, and another part is the alternating current operation part.Wherein the node of divide-shut brake contactor can self-sustaining, but does not automatically terminate self-sustaining function.When the DC control circuit power supply at combined floodgate and isolating switch alternating current operation power supply during at separating brake; If divide-shut brake contactor self-sustaining this moment; The AC isolation switch operating power of closing, motor just begin to rotate, and promptly mistake deciliter has taken place when also not sending the breaking-closing operating order isolating switch.To cause the serious consequence of on-load drawing isolating switch like this.
The utility model content
The purpose of the utility model provides a kind of secondary circuit control circuit of isolator operating mechanism that can effectively avoid mistake deciliter.
A kind of secondary circuit control circuit of isolator operating mechanism; Comprise DC control part and alternating current operation part; Its special feature is; In the three-phase power line of said alternating current operation part, be in series with a three-phase voltage relay, the output contact of this three-phase voltage relay is connected in the control loop of said DC control part.
Wherein the output contact of three-phase voltage relay is 3, and is normally opened contact.
Wherein the output contact of three-phase voltage relay is connected between gate controlled switch and the power cathode.
The utility model is through increasing a three-phase voltage relay; Can be when closing a floodgate at isolating switch DC control circuit power supply; Realize to break off ac control power supply and just can automatically terminate the self-sustaining of divide-shut brake contactor, mix the problem that the control isolating switch exists by mistake deciliter thereby solved alternating current-direct current.Effectively stopped the isolating switch misoperation, prevented trouble before it happens, strong assurance the safe operation of transformer station, make the safety of the person, equipment, electrical network obtain powerful guarantee.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of the utility model DC control part;
Accompanying drawing 2 is the circuit theory diagrams of the utility model alternating current operation part.
Embodiment
As shown in Figure 1; A kind of secondary circuit control circuit of isolator operating mechanism; Comprise DC control part and alternating current operation part; In the three-phase power line of said alternating current operation part, be in series with a three-phase voltage relay K A, output contact K1, KA2, the KA3 of this three-phase voltage relay K A is connected in the control loop of said DC control part, specifically is that output contact K1, KA2, the KA3 of three-phase voltage relay K A is 3; And be normally opened contact, and output contact K1, KA2, the KA3 of three-phase voltage relay K A are connected between gate controlled switch and the power cathode.
Thereby when closing the isolator operation power supply, mistake deciliter can not take place in isolating switch, so can not cause the misoperation of on-load drawing isolating switch.
Like Fig. 1, shown in 2; Also comprise three-phase voltage relay K A in the circuit theory diagrams, contactor KM1, contactor KM2, hot coupling relay K T; Alternating current machine M; Divide-shut brake button SB1, divide-shut brake button SB2, gate controlled switch SP1, gate controlled switch SP2, the output contact KA1 of three-phase voltage relay K A, output contact KA2, output contact KA3.
Claims (3)
1. the secondary circuit control circuit of an isolator operating mechanism; Comprise DC control part and alternating current operation part; It is characterized in that: in the three-phase power line of said alternating current operation part, be in series with a three-phase voltage relay (KA), the output contact of this three-phase voltage relay (KA) (K1, KA2, KA3) is connected in the control loop of said DC control part.
2. the secondary circuit control circuit of isolator operating mechanism as claimed in claim 1, it is characterized in that: wherein the output contact of three-phase voltage relay (KA) (K1, KA2, KA3) is 3, and is normally opened contact.
3. according to claim 1 or claim 2 the secondary circuit control circuit of isolator operating mechanism, it is characterized in that: wherein the output contact of three-phase voltage relay (KA) (K1, KA2, KA3) is connected between gate controlled switch and the power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203704408U CN202217596U (en) | 2011-09-28 | 2011-09-28 | Secondary loop control circuit for operation mechanism of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203704408U CN202217596U (en) | 2011-09-28 | 2011-09-28 | Secondary loop control circuit for operation mechanism of isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217596U true CN202217596U (en) | 2012-05-09 |
Family
ID=46016837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203704408U Expired - Fee Related CN202217596U (en) | 2011-09-28 | 2011-09-28 | Secondary loop control circuit for operation mechanism of isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202217596U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188263A (en) * | 2018-09-18 | 2019-01-11 | 湖南长高高压开关有限公司 | A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system |
| CN110146773A (en) * | 2019-06-20 | 2019-08-20 | 广东电网有限责任公司 | A kind of monitoring of control loop and fault coverage judgement system |
| CN112104266A (en) * | 2020-08-11 | 2020-12-18 | 云南云铝涌鑫铝业有限公司 | Control circuit and control method of direct-current bus isolating switch |
-
2011
- 2011-09-28 CN CN2011203704408U patent/CN202217596U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188263A (en) * | 2018-09-18 | 2019-01-11 | 湖南长高高压开关有限公司 | A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system |
| CN109188263B (en) * | 2018-09-18 | 2024-03-26 | 湖南长高高压开关有限公司 | High-voltage isolating switch AC/DC voltage regulation power supply test operation secondary circuit system |
| CN110146773A (en) * | 2019-06-20 | 2019-08-20 | 广东电网有限责任公司 | A kind of monitoring of control loop and fault coverage judgement system |
| CN112104266A (en) * | 2020-08-11 | 2020-12-18 | 云南云铝涌鑫铝业有限公司 | Control circuit and control method of direct-current bus isolating switch |
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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: 20120509 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |