Thyristor switched capacitor high voltage valve test device and method

Abstract

The utility model discloses a testing device of the high-pressure valve of a quartz brake tube slinging capacitor (TSC) as well as a method using the device to conduct TSC valve current test and operation test, which comprises two direct current voltage sources, six auxiliary valves and two relatively independent oscillating circuits composed of two capacitors and two reactors. The testing device realizes different working sequence and test methods by use of the triggering of a series of auxiliary valves, the tested valves are made to operate current and steady-state intensity for a long time under operation test mode and undergo transient state excess current, transient excess voltage and transient heat intensity under excess current test mode, which can both meet the requirements of TSC high voltage valve operation test and excess current test. The utility model adopts the cooperation of resonant circuit and the method of superimposing oscillating current to realize relatively large test current and the test intensity is distributed to two power supplies, which reduces the work intensity of the test device and enhances the safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of measurement and testing, and relates to a thyristor switching capacitor (TSC) high-voltage valve test device, and also relates to a method for using the device to conduct a TSC valve overcurrent test and operation test. Background technique [0002] With the gradual popularization of flexible AC transmission technology in power systems, the reliability of its core component - high-power high-voltage series thyristor valves has become the key to system safety. Since flexible AC transmission devices generally have the characteristics of high voltage, large current, and large capacity, it is difficult to construct a full-load circuit with the same operating conditions as the actual operating conditions in the test environment for testing. Thyristor switched capacitor (TSC) device is an important flexible AC power transmission equipment, mainly used in reactive power compensation of power system, its core com...

AI Technical Summary

Problems solved by technology

Limited to the provision of test capacity, synthetic test methods are generally used to carry out operation tests and overcurrent tests of TSC valves. The basic idea is to use multiple sets of power systems to provide TSC valves with long-term operating current, fault overcurrent and high voltage strength. , that is, the existing thyristor switching capacitor high-voltage valve test device cannot take into account the operation test and over-current test of the TSC high-pressure valve, but uses two independent test devices to achieve the test purpose of the operation test and over-current test respectively

Images