High-voltage direct-current energy release device

Abstract

The invention provides a high-voltage direct-current energy release device. The high-voltage direct-current energy release device comprises a lightning arrester body, a trigger switch assembly, a resistance tower assembly, an electric reactor assembly, a bypass switch assembly and a base assembly, wherein the lightning arrester body, the trigger switch assembly and the resistance tower assembly are all of a vertical structure, and the lightning arrester body and the resistance tower assembly are arranged in a layered mode. The lightning arrester body is arranged on the upper portion of the base assembly, the resistance tower assembly is located on the upper portion of the trigger switch assembly, the lightning arrester body is connected with the trigger switch assembly and the resistance tower assembly in a layered mode, and the electric reactor assembly and the bypass switch assembly are both connected with the trigger switch assembly. The device is low in manufacturing difficulty, low in cost, simple in control process, relatively compact in arrangement, convenient for optical fiber cable arrangement, small in occupied area, good in overall anti-seismic property, convenient to overhaul and maintain and relatively high in operation reliability, and the whole device is arranged in a layered and sub-functional area manner.

Description

technical field [0001] The invention relates to the technical field of high-voltage direct current transmission, in particular to a high-voltage direct current energy release device. Background technique [0002] In view of the possible overvoltage condition of the voltage source converter valve caused by the fault of the hybrid DC system, the introduction of an energy release device at the DC bus is considered in the system design to detect the overvoltage state of the sub-module in time, and the switch is closed quickly to reduce the surplus Power, so that the voltage source converter valve can achieve fault ride-through, protect the voltage source converter valve, and solve the overvoltage problem of the voltage source converter valve during the fault period. [0003] The DC chopper circuit (DC Chopper) is also called a DC-DC Converter (DC-DC Converter), and its function is to change the DC power into another DC power with a fixed voltage or an adjustable voltage. DC Cho...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of high manufacturing cost, uncompact structure and large floor space in the above-mentioned prior art, the present invention provides a high-voltage DC energy release device, which includes a surge arrester body (10), a trigger switch assembly (20), a resistance tower Component (30), reactor component (40), bypass switch component (50) and base component (60);

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