A thyristor converter valve assembly

Abstract

Provided is a thyristor converter valve assembly, comprising: a bracket, with a left valve unit (14) and a right valve unit (13) disposed on the bracket, wherein each valve unit comprises an electric reactor assembly, a resistance radiator (15) and thyristor radiators (5). The thyristor converter valve assembly further comprises a water cooling system for cooling the electric reactor assembly, the resistance radiator and the thyristor radiator. The water cooling system comprises a main water intake route and a main water return route, wherein the main water intake route and the main water return route are communicated by means of a first, a second and a third branch water route (20, 19, 21) provided in parallel. The electric reactor assembly (16) and the thyristor radiators (5) in the left valve unit are all connected in series in the first branch water route (20), the electric reactor assembly (16) and the thyristor radiators (5) in the right valve unit are all connected in series in the second branch water route (19), and the resistance radiators (15) in the left and right valve units (14, 13) are all connected in series in the third branch water route (21). Provided is a thyristor converter valve assembly having a water cooling system of a simple structure.

Description

technical field [0001] The invention relates to the field of high-power electric power electronic converter valves in power systems, in particular to a thyristor converter valve assembly. Background technique [0002] As the core component of the HVDC transmission system, the converter valve has been developed and applied for many years. Existing thyristor converter valve components such as "a new type of thyristor converter valve valve module" disclosed in Chinese patent document CN101719719A, the valve module includes a bracket, and two valve units with the same structure are arranged symmetrically on the left and right sides of the bracket , each valve unit includes a reactor assembly and a valve module, the valve module includes a valve section, a damping resistance unit and a damping capacitor unit, the damping resistance unit includes a damping resistor and a resistance radiator, the valve section includes a valve section frame, and the valve section frame includes Th...

AI Technical Summary

Problems solved by technology

The problem with the existing converter valve assembly is that the water cooling system adopts fully parallel water channels, which makes the design of the water channels difficult, there are many water joints, and the risk of water leakage is high. Short circuit accident; in addition, the full parallel design also requires the water cooling system to have a large water pressure, which further increases the risk of water leakage in the waterway system

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