Design Research Of Dielectric Type Test Of High Voltage Converter Valve

In recent 20 years,with development of power electronics and more cheaper for long distance power transmission than AC, HVDC(high voltage direct current transmission) develops quickly,special in China.High voltage converter valve is the key component of HVDC project,its technical performance determines the performance of HVDC project in some way. The best solution to test valve is type test, the dielectric type test is one part of type test.It is full check for high voltage converter valve during dielectric type test, including valve support,single valve,multi-valve,from external to internal,from part to whole, we can get the detail performance report though strict test,then analyse the designing of the valve whether to meet the technical requirement of this project. There are a few lab who have capacity to do the dielectric type test in China,so it is good reference for relative institute to do the design research of high voltage for dielectric type test.This paper states the development of HVDC technology,indicates the advantage and shortage of HVDC,introduces the information for HVDC project in the world,including in China,and show the development history of high voltage converter valve.This paper introduces the valve config and technical information,lists the valve test items one by one,including the routine test,operational type test,dielectric type test,states test criterion for type test.To meet the requirement of dielectric type test, it is detail definition for test object, designed for test disposal.As per detail requirement of dielectric type test,it is designed for valve support,single valve and multi-valve how to perform the test,how to build the test circuit,how to connect the test equipment with test object.The tests are performed according the design, the final test results complys the requirements of IEC standard and technical specification.