A Proposed Test Specification for HVDC Thyristor Valves

This paper presents a proposal for a test specification for HVDC thyristor valves. The test specifiation includes a discussion of the criteria for successful type testing, a proposal for selection of test withstand voltage levels and a description of proposed dielectric and operational tests. The dielectric tests are intended to verify the withstand and other voltage-related characteristics of the valve and the operational tests are intended to demonstrate the correct operation and capabilities of the valve under various operating conditions including critical faults. The test series consist of type tests and production sample tests performed at the manufacturer´s test facilities prior to shipment. Manufacturer´s equipment development tests, routine factory tests, commissioning tests and other site tests are not within the scope of the test specification, and hence are not included.