Active arc extinguishing structure of high-speed vacuum circuit breaker

Abstract

The utility model discloses an active arc extinguishing structure for a high-speed vacuum circuit breaker, and the structure comprises a primary circuit which comprises a primary inductor L1 and a first capacitor C1; the secondary circuit comprises a secondary inductor L2 and a second capacitor C2; the main control circuit comprises a voltage detection module and a switch module; wherein the primary inductor L1 is connected with the first capacitor C1; the connection of the secondary inductor L2 and the second capacitor C2 and the voltage detection module of the main control circuit are respectively connected to one end of the first capacitor C1 and one end of the second capacitor C2; the switch module comprises a first switch K1 and a second switch K2, one end of the first switch K1 is connected with the output end, one end of the second switch K2 is connected with the output end, the other end of the first switch K1 is selectively connected with the main control circuit and the primary inductor L1, and the other end of the second switch K2 is selectively connected with the main control circuit and the secondary inductor L2. According to the utility model, rapid and stable arc suppression is realized by introducing cooperative work of the master control circuit and the inductive coupling circuit.

Description

Technical Field

[0001] This utility model relates to the field of circuit technology, specifically to an active arc-extinguishing structure for a high-speed vacuum circuit breaker. Background Technology

[0002] In high-voltage switchgear or circuit breakers, electric arcs often occur when the circuit is broken, leading to equipment damage or safety hazards. Traditional arc extinguishing methods include the use of mechanical structures or simple RC circuits, but these methods may suffer from slow response speeds and poor arc extinguishing effects. In recent years, dynamic arc extinguishing technology based on inductive coupling has gradually gained attention, suppressing arcs by rapidly controlling circuit parameters. However, the current technology lacks an efficient combination of a main control circuit and an inductive coupling circuit, resulting in room for improvement in arc extinguishing efficiency. Therefore, an improved circuit structure is needed to achieve more efficient dynamic arc extinguishing. Utility Model Content

[0003] The purpose of this invention is to provide an active arc-extinguishing structure for a high-speed vacuum circuit breaker, which achieves rapid and stable arc suppression by introducing the coordinated operation of the main control circuit and the inductive coupling circuit.

[0004] The proposed circuit structure is as follows:

[0005] An active arc-extinguishing structure for a high-speed vacuum circuit breaker includes:

[0006] - Primary circuit, the primary circuit including primary inductor L1 and first capacitor C1;

[0007] - Secondary circuit, the secondary circuit including secondary inductor L2 and second capacitor C2;

[0008] - Main control circuit, which includes a voltage detection module and a switching module;

[0009] - Wherein, the primary inductor L1 is connected to the first capacitor C1;

[0010] - The connection of the second capacitor C2 to the secondary inductor L2.

[0011] - The voltage detection modules of the main control circuit are respectively connected to one end of the first capacitor C1 and one end of the second capacitor C2;

[0012] - The switching module includes a first switch K1 and a second switch K2. One end of the first switch K1 is connected to the output terminal, and one end of the second switch K2 is connected to the output terminal. The other end of the first switch K1 is selectively connected to the main control circuit and the primary inductor L1, and the other end of the second switch K2 is selectively connected to the main control circuit and the secondary inductor L2.

[0013] Furthermore, the other end of the voltage detection module of the main control circuit is connected to the output terminal.

[0014] Furthermore, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are equal.

[0015] Furthermore, the switching module includes one of a relay, a MOSFET, or an IGBT.

[0016] The beneficial effects of this utility model are:

[0017] By introducing the coordinated operation of the main control circuit and the inductive coupling circuit, fast and stable arc suppression is achieved. Attached Figure Description

[0018] Figure 1 This is the circuit structure diagram of this utility model. Detailed Implementation

[0019] like Figure 1 As shown, this utility model discloses an active arc-extinguishing structure for a high-speed vacuum circuit breaker, comprising:

[0020] - Primary circuit, the primary circuit including primary inductor L1 and first capacitor C1;

[0021] - Secondary circuit, the secondary circuit including secondary inductor L2 and second capacitor C2;

[0022] - Main control circuit, which includes a voltage detection module and a switching module;

[0023] - Wherein, the primary inductor L1 is connected to the first capacitor C1;

[0024] - The connection of the second capacitor C2 to the secondary inductor L2.

[0025] - The voltage detection modules of the main control circuit are respectively connected to one end of the first capacitor C1 and one end of the second capacitor C2;

[0026] - The switching module includes a first switch K1 and a second switch K2. One end of the first switch K1 is connected to the output terminal, and one end of the second switch K2 is connected to the output terminal. The other end of the first switch K1 is selectively connected to the main control circuit and the primary inductor L1, and the other end of the second switch K2 is selectively connected to the main control circuit and the secondary inductor L2.

[0027] Furthermore, the other end of the voltage detection module of the main control circuit is connected to the output terminal.

[0028] Furthermore, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are equal.

[0029] The working principle of this utility model is as follows:

[0030] - Dynamic arc suppression function: The function of the circuit is to suppress the arc through electromagnetic coupling and reverse voltage. The secondary inductor L2 and capacitors C1 and C2 work together to generate a reverse voltage to cancel the arc voltage.

[0031] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. An active arc-extinguishing structure for a high-speed vacuum circuit breaker, characterized in that, include: - Primary circuit, the primary circuit including primary inductor L1 and first capacitor C1; - Secondary circuit, the secondary circuit including secondary inductor L2 and second capacitor C2; - Main control circuit, which includes a voltage detection module and a switching module; - Wherein, the primary inductor L1 is connected to the first capacitor C1; - The connection of the second capacitor C2 to the secondary inductor L2. - The voltage detection modules of the main control circuit are respectively connected to one end of the first capacitor C1 and one end of the second capacitor C2; - The switching module includes a first switch K1 and a second switch K2. One end of the first switch K1 is connected to the output terminal, and one end of the second switch K2 is connected to the output terminal. The other end of the first switch K1 is selectively connected to the main control circuit and the primary inductor L1, and the other end of the second switch K2 is selectively connected to the main control circuit and the secondary inductor L2.

2. The active arc-extinguishing structure for a high-speed vacuum circuit breaker according to claim 1, characterized in that, The other end of the voltage detection module of the main control circuit is connected to the output terminal.

3. The active arc-extinguishing structure for a high-speed vacuum circuit breaker according to claim 2, characterized in that, The capacitance values ​​of the first capacitor C1 and the second capacitor C2 are equal.

4. The active arc-extinguishing structure for a high-speed vacuum circuit breaker according to claim 3, characterized in that, The switching module includes one of a relay, a MOSFET, or an IGBT.

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