CN205911828U - Circuit breaker control circuit - Google Patents

Abstract

The utility model discloses a circuit breaker control circuit, which comprises: a remote/local selection transfer switch (HK1), a closing/tripping transfer switch (SA1), a circuit breaker control circuit arranged in a protective screen, and Closing/tripping coil. As a result, when a fault occurs, the protective screen can operate the outlet to realize the tripping of the circuit breaker, remove the fault point in time, and improve the reliability of the power supply of the power system.

Description

A circuit breaker control circuit

technical field

The utility model relates to the technical field of electric power, in particular to a circuit breaker control circuit.

Background technique

Figure 1 is an existing circuit breaker control circuit. In the figure, 01 and 02 are the positive and negative power circuits respectively, and 07 and 37 are the closing and tripping circuits respectively. The circuit breaker "remote /Local” selection switch HK1, “closing/opening” switch SA1, when the “remote/local” selection switch HK1 is placed in the “local” position (that is, HK1 closes the contact), SA1 realizes tripping Or closing, if a fault occurs at this time, the outlet of the protective screen action cannot realize the tripping of the circuit breaker, and the fault point cannot be removed in time, which will expand the scope of accidental power outages and affect the safety of the power system.

Utility model content

The technical problem to be solved by the utility model is how to remove the fault point in time when a fault occurs when the "remote/local" selector switch HK1 of the circuit breaker is placed at the "local" position, without expanding the scope of power outage due to major accidents.

For this reason, the embodiment of the utility model provides a circuit breaker control circuit, including: a remote/local selection transfer switch (HK1), a closing/opening transfer switch (SA1), and a Circuit breaker control circuit, and closing/opening coil.

Preferably, the remote/local selection changeover switch (HK1), closing/opening changeover switch (SA1) and closing/opening coils are all set in the control cabinet.

In the circuit breaker control circuit of the embodiment of the utility model, by connecting the circuit breaker operating circuit in the protective screen in series between the "remote/local" selection switch HK1 and the "closing, tripping" coil of the circuit breaker, when a fault occurs When the protection screen acts on the outlet, the circuit breaker can be tripped, and the fault point can be removed in time, which improves the reliability of the power supply of the power system.

Description of drawings

The features and advantages of the present utility model can be more clearly understood by referring to the accompanying drawings. The accompanying drawings are schematic and should not be construed as any limitation to the present utility model. In the accompanying drawings:

Fig. 1 shows a schematic diagram of an existing circuit breaker control circuit;

Fig. 2 shows a schematic diagram of a circuit breaker control circuit according to an embodiment of the present invention.

detailed description

Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations all fall into the scope of the accompanying drawings. within the scope of the claims.

As shown in Figure 2, the embodiment of the utility model provides a circuit breaker control circuit. In the figure, 09 and 39 are the closing and tripping circuit numbers, and the middle frame of 09 and 39 and 07 and 37 are divided into circuit breakers in the protective screen. Operation circuit, the two control cabinets marked front and back are the same cabinet, and the two boxes indicate that different components in the same cabinet are connected to different positions. The circuit breaker control circuit includes:

The remote/local selection transfer switch HK1, the closing/tripping transfer switch SA1, the circuit breaker control circuit and the closing/tripping coil arranged in the protective screen are connected in series in sequence.

In the circuit breaker control circuit of the embodiment of the utility model, by connecting the circuit breaker operating circuit in the protective screen in series between the "remote/local" selection switch HK1 and the "closing, tripping" coil of the circuit breaker, when a fault occurs When the protection screen acts on the outlet, the circuit breaker can be tripped, and the fault point can be removed in time, which improves the reliability of the power supply of the power system.

Preferably, the remote/local selection changeover switch (HK1), closing/tripping changeover switch (SA1) and closing/tripping coils are all arranged in a central control cabinet, such as a 110KV GIS central control cabinet.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (2)

1. a kind of circuit breaker control circuit is it is characterised in that include:

The selective switchgear (hk1) of the distant place being sequentially connected in series/on the spot, close a floodgate/tripping operation change-over switch (sa1), be arranged on protection screen In breaker control circuit and combined floodgate/breaking coil.

2. circuit breaker control circuit according to claim 1 it is characterised in that a described distant place/selective switchgear on the spot (hk1), combined floodgate/tripping operation change-over switch (sa1) and combined floodgate/breaking coil are all disposed within convergence control cabinet.