Thyristor level test method for novel converter valve module

Abstract

The invention relates to the field of power system devices, in particular to a test method for a novel converter valve module. Before each converter valve leaves a factory, a routine test needs to be performed, wherein the most important item in the routine test is a functional test which is used for checking whether the thyristor level electric wiring of the converter valve module and thyristor electric equipment (TE) are normal. The invention discloses a novel design method for the functional test. A test circuit comprises an alternating current power supply, an alternating current filter, an isolating switch, a voltage regulator, an isolating transformer, a current limiting resistor, an insulated grid bipolar-type power tubes (IGBTs) which are connected in series positively and negatively, an impulse voltage generator and a test platform. The work of the test circuit is that: unified control is performed through the test platform; a test voltage is provided for a thyristor level by the alternating current system circuit; the on-off state of a loop is controlled by the IGBTs so that the voltage and the current applied to the thyristor level change; and the impulse voltage generator is used for providing an impulse voltage for the thyristor level.

Description

technical field [0001] The invention relates to the field of power system devices, in particular to a novel converter valve module test method. Background technique [0002] The most basic part of the converter valve module test is the routine test. Before the routine test, a functional test is required. Since the traditional HVDC power transmission projects all purchase foreign converter valves, the functionality of the converter valve in the routine test All tests need to use valve test equipment (VTE) for experiments. The technology of VTE has been mastered by foreign companies for a long time. At present, there is no independent research and development of converter valves for DC transmission projects in China, so there is no reliable test method and method for this functional test. Advanced test equipment, this invention is to propose a novel design scheme for the function test of the converter valve module under such a background technology. The design method of the te...

AI Technical Summary

Problems solved by technology

The composition of the test unit is complex and difficult to realize. At present, there is no test unit that has been independently developed and applied to actual projects in China.

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