HVDC (high-voltage direct current) converter valve water cooling system

Abstract

The invention discloses an HVDC (high-voltage direct current) converter valve water cooling system. The system comprises a main circulation loop, a deionizing loop and a water supplementing branch, wherein the main circulation loop and the deionizing loop are communicated through an electric ball valve, and the deionizing loop and the water supplementing branch are communicated through an electric ball valve; the main circulation loop comprises a main circulation pump, a closed cooling tower, a main circulation filter, an inlet valve temperature transmitter, a main circulation flow transmitter, a converter valve group, an outlet valve temperature transmitter and a degassing tank which are sequentially communicated through pipelines; power-driven three-way valves are further mounted between the main circulation pump and the closed cooling tower. According to the HVDC converter valve water cooling system, flow distribution can be performed according to cooling capacity of different converter valves, different heat dissipation requirements are met respectively, the number of water cooling systems can be effectively reduced, the operation difficulty is reduced, and the cost is saved.

Description

technical field [0001] The invention relates to a water cooling system for a high-voltage DC converter valve. Background technique [0002] During the operation of the high-voltage DC converter valve, its internal components such as thyristors, damping capacitors, voltage equalizing capacitors, damping resistors, voltage equalizing resistors, saturated reactors, and thyristor control units will generate a lot of heat. When the temperature exceeds its junction temperature, damage will occur causing DC blocking. Therefore, the intelligent closed water cooling circulation system has become a widely used converter valve cooling device due to its advantages of high reliability, high efficiency, and humanization. In order to meet the requirements of simulating high-voltage DC working conditions, it is necessary to conduct in-factory tests on the converter valves. If a separate water cooling system is configured for each set of converter valves, the number of water cooling systems...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of simulating high-voltage DC working conditions, it is necessary to conduct in-factory tests on the converter valves. If a separate water-cooling system is configured for each set of converter valves, the number of water-cooling systems will be too large, and the background operation will be difficult.

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