CN214798556U

CN214798556U - GIS circuit breaker closing circuit

Info

Publication number: CN214798556U
Application number: CN202120223725.2U
Authority: CN
Inventors: 张盼盼; 许卫东; 夏宏君; 王宇; 张玉海; 阴俊生; 王勇
Original assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Current assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-19
Anticipated expiration: 2031-01-26

Abstract

The utility model discloses a GIS circuit breaker closing circuit, including circuit breaker operation box, protection cabinet and circuit breaker mechanism case, the n5 output of circuit breaker operation box is connected with the terminal row 4D39 terminal in the protection cabinet, and the terminal row 4D39 terminal is connected with the-X2: 58 terminal of circuit breaker mechanism case through the circuit breaker auxiliary node-QFA in the circuit breaker mechanism case; the n6 output end of the circuit breaker operation box is connected with the 4D37 terminal of the terminal row in the protection cabinet, and the 4D37 terminal of the terminal row is connected with the-X2: 19 terminal of the circuit breaker mechanism box. The switching-on circuit and the jumping monitoring circuit in the circuit breaker operation box are disconnected, so that the integrity of the switching-on circuit can be monitored, and the jumping prevention function of the switching-on circuit can be realized.

Description

GIS circuit breaker closing circuit

Technical Field

The utility model relates to a circuit breaker closing technology field especially relates to a GIS circuit breaker closing return circuit.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The offshore booster station is an offshore facility used for collecting, boosting and sending out electric energy generated by each offshore wind turbine. The onshore booster station is used for realizing the grid connection of wind power electric energy transmitted by a submarine cable and an electric power system and can realize facilities required by the operation of a wind power plant. The gas insulated switchgear GIS organically integrates a circuit breaker, a disconnecting switch, a grounding switch, a voltage transformer, a current transformer, a lightning arrester and other equipment except a transformer in a booster station.

The existing circuit breaker closing circuit adopts a circuit connection form shown in fig. 2, and the closing circuit and the jumping position monitoring circuit in the relay operation box are connected and then connected with a terminal-X2: 19 of the circuit breaker mechanism box, but in the wiring mode, the jumping position monitoring circuit in the relay operation box cannot be separated from the closing circuit, so that the circuit breaker cannot be flexibly controlled.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present disclosure provides a closing circuit of a GIS circuit breaker, which disconnects the closing circuit in a circuit breaker operating box from a tripping monitoring circuit, thereby not only monitoring the integrity of the closing circuit, but also realizing the tripping prevention function of the closing circuit.

In order to achieve the purpose, the following technical scheme is adopted in the disclosure:

a GIS breaker closing circuit comprises a breaker operation box, a protection cabinet and a breaker mechanism box, wherein the n5 output end of the breaker operation box is connected with a 4D39 terminal of a terminal row in the protection cabinet, and a 4D39 terminal of the terminal row is connected with a-X2: 58 terminal of the breaker mechanism box through a breaker auxiliary node-QFA in the breaker mechanism box; the n6 output end of the circuit breaker operation box is connected with the 4D37 terminal of the terminal row in the protection cabinet, and the 4D37 terminal of the terminal row is connected with the-X2: 19 terminal of the circuit breaker mechanism box.

Further, the n5 output end of the circuit breaker operation box is connected with a jump position monitoring loop in the circuit breaker operation box.

Furthermore, the n6 output end of the circuit breaker operation box is connected with a closing loop in the circuit breaker operation box.

Furthermore, the circuit breaker operation box adopts a CZX-12R2 type relay operation device.

Compared with the prior art, the beneficial effect of this disclosure is:

1. the switching-on circuit and the jumping monitoring circuit in the relay operation box are disconnected, the jumping monitoring circuit is connected with a-X2: 58 terminal of a breaker mechanism box through a breaker auxiliary node-QFA in the breaker mechanism box, and the switching-on circuit is connected with a-X2: 19 terminal of the breaker mechanism box, so that the jumping monitoring relay can still monitor the near-control switching-on circuit when the breaker is in a switching-off position, and the jumping monitoring circuit is isolated through a breaker auxiliary contact when the breaker is switched on, and the anti-jumping function of the switching-on circuit is realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic circuit connection diagram of embodiment 1 of the present disclosure;

fig. 2 is a schematic diagram of a circuit connection of a closing loop of a conventional GIS circuit breaker.

The specific implementation mode is as follows:

the present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example 1

The traditional connection mode among the circuit breaker operation box, the protection cabinet and the circuit breaker mechanism box is as shown in fig. 2, wherein an anti-tripping loop in the circuit breaker operation box is connected with a 4D71 terminal of a terminal block 4D71 terminal of the circuit breaker mechanism box, and the terminal block 4D71 terminal is connected with an n30 output end of the circuit breaker mechanism box; the method comprises the steps of connecting a jumping position monitoring circuit in a circuit breaker operation box with a 4D39 terminal of a terminal row in a protection cabinet, connecting a closing circuit in the circuit breaker operation box with a 4D37 terminal of the terminal row in the protection cabinet, connecting a 4D37 terminal of the terminal row in the protection cabinet with a 4D39 terminal, and connecting a 4D39 terminal of the terminal row in the protection cabinet with a-X2: 19 terminal of a circuit breaker mechanism box.

This embodiment is in order to realize when the circuit breaker closes a floodgate, the anti-jump function in the circuit breaker control box of closing a floodgate return circuit, and a GIS circuit breaker closing a floodgate return circuit that discloses, the mode of connection is as shown in fig. 1, improves the mode of connecting between circuit breaker control box, protection cabinet and the circuit breaker mechanism case.

The difference from the traditional wiring mode is as follows: in the embodiment, the n5 output end of the circuit breaker operation box is connected with the 4D39 terminal of the inner terminal row of the protection cabinet, the 4D39 terminal of the terminal row is connected with the-X2: 58 terminal of the circuit breaker mechanism box through the circuit breaker normally closed auxiliary node-QFA in the circuit breaker mechanism box, the n6 output end of the circuit breaker operation box is connected with the 4D37 terminal of the inner terminal row of the protection cabinet, and the 4D37 terminal of the terminal row is connected with the-X2: 19 terminal of the circuit breaker mechanism box through a control cable.

The output end of the n5 is connected to a terminal block 4D39 terminal of the protection cabinet through a short-circuit wire in the protection cabinet, the protection cabinet is connected with the breaker mechanism box through a control cable, one end of the control cable is connected to the terminal block 4D39 terminal of the protection cabinet, and the other end of the control cable is connected to a breaker auxiliary node-QFA in the breaker mechanism box.

The n5 output end of the breaker operation box is connected with a jump position monitoring loop in the breaker operation box. And the n6 output end of the breaker operation box is connected with a closing loop in the breaker operation box.

the-X2: 58 terminal of the circuit breaker mechanism box is connected with a circuit breaker closing coil Y1A in the circuit breaker mechanism box, and the output end of the circuit breaker closing coil Y1A is connected with the-X2: 10 terminal of the circuit breaker mechanism box through a circuit breaker normally closed auxiliary node-QFA in the circuit breaker mechanism box.

the-X2: 19 terminal of the breaker mechanism box is connected with a relay-K12 in the breaker mechanism box, and the relay-K12 is connected with a breaker normally-closed auxiliary node-QFA 1 in the breaker mechanism box.

When the breaker is at the opening position, a tripping monitoring circuit in the breaker operating box is conducted with a closing circuit to realize the monitoring function of the tripping monitoring circuit on the closing circuit of the GIS breaker, and when the breaker is at the closing position, a normally closed auxiliary contact QFA of the breaker is disconnected, so that the tripping monitoring circuit in the breaker operating box is disconnected, the tripping monitoring circuit is isolated, and the tripping prevention function of the closing circuit is realized.

The circuit breaker operation box is a CZX-12R2 type relay operation device.

The jump position monitoring loop in the circuit breaker operation box is composed of jump position monitoring relays 1TWJa, 2TWJa and 3TWJa which are sequentially connected in series, and the output end of the jump position monitoring relay 3TWJa is connected with the output end of the n5 of the circuit breaker operation box.

The switching-on loop in the circuit breaker operation box is a hand-operated relay SHJa and protection tripping relay normally-closed nodes 1TBUJa and 2TBUJa which are connected in series, and the protection tripping relay normally-closed nodes 1TBUJa and 2TBUJa are connected in series and then connected with the n6 output end of the circuit breaker operation box.

A closing coil-Y1A in the breaker mechanism box is connected with an anti-tripping relay auxiliary node-K12, an intermediate relay auxiliary node-K6, -K9 and a breaker auxiliary node-QFA 1 in series, and the output end of the QFA1 passes through, -X2: the 10 terminal is connected to the negative power supply of the breaker mechanism box. The input end of an auxiliary node-K6 of the intermediate relay is connected with an input end-X2: 2 terminal, -X2:1 and-X2: 2 forming a connectable terminal by a connecting piece, -X2: the phase 1 is connected to a control positive power supply n1 in a breaker operation box through a control cable to form a complete A-phase proximity control closing loop.

The normally closed nodes 1TBUJa and 2TBUJa of the protective tripping relay in the circuit breaker operation box are connected in series and then are connected with the-X2 of the circuit breaker mechanism box through a 4D37 terminal of a terminal block: 19 terminal connection, -X2: the 19 terminal is sequentially connected to an auxiliary node of a changeover switch SK1 in the mechanism box, an auxiliary node of an anti-tripping relay K12, an auxiliary node of an intermediate relay K9, a closing coil of a breaker-Y1A and an auxiliary node of an air switch-QFA 1, and the output end of the auxiliary node of the QFA1 is connected to a terminal-X2: 10 of the mechanism box to form an A-phase remote control closing loop.

An auxiliary node-K12 of the anti-tripping relay in the breaker mechanism box is connected with an auxiliary node-QFA 1 of the breaker in parallel and then connected to the anti-tripping relay-K12, and the output end of the anti-tripping relay-K12 is connected to a negative power supply-X2 of the mechanism box: 59, forming a complete A-phase anti-jump loop.

The CZX-12R2 type relay operating device, the protection cabinet and the circuit breaker mechanism box which are arranged in the present disclosure are all of the existing structure, and the differences between the present disclosure and the traditional wiring mode are only: the n5 output end of the circuit breaker operation box is connected with the 4D39 terminal of the inner terminal row of the protection cabinet, the 4D39 terminal of the terminal row is connected with the-X2: 58 terminal of the circuit breaker mechanism box through the circuit breaker normally closed auxiliary node-QFA in the circuit breaker mechanism box, the n6 output end of the circuit breaker operation box is connected with the 4D37 terminal of the inner terminal row of the protection cabinet, the 4D37 terminal of the terminal row is connected with the-X2: 19 terminal of the circuit breaker mechanism box through a control cable, and the rest wiring mode is the same as the traditional wiring mode.

The wiring mode of GIS circuit breaker closing circuit of this embodiment can not only keep watch on the integrality of GIS circuit breaker closing circuit, can also realize closing circuit's the function of preventing jumping, can effectively reduce the probability of sending out by mistake of the inconsistent signal of circuit breaker operation box circuit breaker three-phase, improves protection device action accuracy.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims

1. A GIS breaker closing circuit comprises a breaker operation box, a protection cabinet and a breaker mechanism box, and is characterized in that the n5 output end of the breaker operation box is connected with a terminal row 4D39 terminal in the protection cabinet, and a terminal row 4D39 terminal is connected with a-X2: 58 terminal of the breaker mechanism box through a breaker auxiliary node-QFA in the breaker mechanism box; the n6 output end of the circuit breaker operation box is connected with the 4D37 terminal of the terminal row in the protection cabinet, and the 4D37 terminal of the terminal row is connected with the-X2: 19 terminal of the circuit breaker mechanism box.

2. The GIS breaker closing circuit of claim 1, wherein the n5 output of the breaker operating box is connected to a trip monitoring circuit in the breaker operating box.

3. The GIS breaker closing circuit of claim 2, wherein the jump position monitoring circuit in the breaker operating box is composed of jump position monitoring relays 1TWJa, 2TWJa and 3TWJa connected in series in sequence, and the output terminal of the jump position monitoring relay 3TWJa is connected with the output port n5 of the breaker operating box.

4. The GIS breaker closing circuit of claim 1, wherein the n6 output of the breaker operating box is connected to the closing circuit in the breaker operating box.

5. The GIS breaker closing circuit of claim 4, wherein the closing circuit in the breaker operating box is formed by connecting a hand relay SHJa and a protective trip relay node in series, and the protective trip relay node is connected with an n6 output port of the breaker operating box.

6. The GIS breaker closing circuit of claim 1, wherein a-X2: 58 terminal of the breaker mechanism box is connected with a breaker closing coil Y1A in the breaker mechanism box, and an output end of the breaker closing coil Y1A is connected with a-X2: 10 terminal of the breaker mechanism box through a breaker normally-closed auxiliary node-QFA 1 in the breaker mechanism box.

7. The GIS breaker closing circuit of claim 1, wherein the-X2: 19 terminal of the breaker mechanism box is connected with a relay-K12 in the breaker mechanism box, and the relay-K12 is connected with a breaker normally closed auxiliary node-QFA 1 in the breaker mechanism box.

8. The GIS breaker closing circuit of claim 1, wherein the breaker mechanism in-box closing coil-Y1A is connected in series with the anti-tripping relay auxiliary node-K12, the intermediate relay auxiliary node-K6, -K9 and the breaker auxiliary node-QFA 1, and the output of QFA1 is connected to the breaker mechanism in series through-X2: the 10 terminal is connected to the negative power supply of the breaker mechanism box, and the input end of an auxiliary node-K6 of the intermediate relay is connected with an input end-X2: 2 terminal, -X2:1 and-X2: 2, -X2:1 is connected to a control positive power supply n1 in the circuit breaker operating box.

9. The GIS breaker closing circuit of claim 1, wherein the breaker mechanism box internal anti-tripping relay auxiliary node-K12 and the breaker auxiliary node-QFA 1 are connected in parallel and then connected to the anti-tripping relay-K12, and the output end of the anti-tripping relay-K12 is connected to the mechanism box negative power supply-X2: 59.

10. the GIS breaker closing circuit of claim 1, wherein the breaker operating box is a CZX-12R2 type relay operating device.