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High-voltage fuse capable of automatically recovering

A high-voltage fuse and automatic recovery technology, which is applied to the parts of the protection switch, the operation/release mechanism of the protection switch, and the status indication of the switchgear, can solve the problems of high maintenance cost, long maintenance time, and low maintenance safety. Achieve the effect of reducing recovery time and high circuit maintenance cost

Pending Publication Date: 2022-06-24
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention designs an automatically recoverable high-voltage fuse, abandons the traditional capacitor wire, and builds an automatic recovery circuit to solve the above-mentioned drop-out fuse with high maintenance cost, low maintenance safety, and long maintenance time. The problem

Method used

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  • High-voltage fuse capable of automatically recovering
  • High-voltage fuse capable of automatically recovering
  • High-voltage fuse capable of automatically recovering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see Figure 1 to Figure 7 As shown in the figure, a high-voltage fuse that can be restored automatically is characterized in that it includes: an insulating casing 1, an electromagnetic relay module 2, a liquid metal relay module 3, a high-flux AC inductor 4, and a control box 5;

[0031] The electromagnetic relay module 2, the liquid metal relay module 3, the high-flux AC inductor 4, and the control box 5 are fixed in the insulating housing 1;

[0032] The electromagnetic relay module 2 and the liquid metal relay module 3 are connected in parallel in the circuit, and the high-magnetic-flux AC inductor 4 is electrically connected to the electromagnetic relay module 2 and the liquid metal relay module 3 through wires 6 respectively, and at the same time through the wires 6 . 6 Electrically connected to the control box 5;

[0033] The liquid metal relay module 3 is switched on and off by the liquid metal control circuit, and is provided with a double-piston head piston 3...

Embodiment 2

[0042] This embodiment is a working principle of a high-voltage fuse that can be automatically restored:

[0043] Based on the above embodiment 1, the liquid metal can be liquid mercury, and the liquid metal evaporator 31 is an electronically controllable liquid metal heating device;

[0044] First of all, the device uses the high-flux AC inductor 4 to induce a small voltage with the same voltage and current change characteristics as the high-current primary winding through the variable current change characteristics in the primary winding coil, which is used to determine the electromagnetic relay module 2, Liquid metal relay module 3 pulls in and disconnects;

[0045] When the circuit is overloaded or short-circuited, the high-flux AC inductor 4 transmits its voltage to the control box, the control box issues a disconnection command, and the coil 23 of the electromagnetic relay module 2 is energized, forming an electromagnet with the iron core 24 to attract the circuit breake...

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Abstract

The invention discloses a high-voltage fuse capable of automatically recovering, which is characterized by comprising an insulating shell, an electromagnetic relay module, a liquid metal relay module, a high-flux alternating current inductor and a control box, the electromagnetic relay module, the liquid metal relay module, the high-flux alternating current inductor and the control box are fixedly arranged in the insulating box; the electromagnetic relay module and the liquid metal relay module are connected in parallel in a circuit, and the high-flux alternating current inductor is electrically connected with the electromagnetic relay module and the liquid metal relay module through wires and is electrically connected with the control box through a wire; according to the invention, circuit faults such as overload or short circuit in a circuit are detected through two sets of independent circuit breaking systems and a high-flux alternating-current inductor, and the on-off of the circuit is controlled by adopting an automatic controllable relay module, so that compared with a traditional fuse mode, the circuit is protected, and meanwhile, a fuse does not need to be replaced all the time to restore the circuit, so that the circuit is protected. And long circuit protection recovery time and high circuit maintenance cost caused by short-time impact are reduced.

Description

technical field [0001] The invention belongs to the technical field of power equipment protection, and in particular relates to a high-voltage fuse that can be automatically restored. Background technique [0002] During the operation of the power system, there are inevitably faults such as overload and short circuit. Usually overload, short circuit and other faults occur, which can easily lead to the burning of chain equipment. Fuse equipment is important to prevent the damage of surrounding power equipment caused by overload and short circuit faults. Equipment plays an important role in the operation of the power system. [0003] At present, the common 10KV high-voltage fuses are mostly non-recoverable drop-out fuses. The principle is that the moving contacts at both ends of the fuse tube are fastened by the fuse (melt), and the upper moving contact is pushed into the "duckbill". After the protruding part, the upper static contact made of phosphor copper sheet is pressed ...

Claims

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Application Information

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IPC IPC(8): H01H71/24H01H71/14H01H71/08H01H71/50H01H71/68H01H71/04
CPCH01H71/24H01H71/14H01H71/08H01H71/68H01H71/50H01H71/04H01H2071/147
Inventor 张文斌王斌罗睿康
Owner KUNMING UNIV OF SCI & TECH