Research on Controllable Line Commutated Converter Operational Test
Commutation failure is one of the most traditional HVDC transmission system.In order to fundamentally eli-minate the impact of commutation failure,based on engineering experience of the DC circuit breaker,a controllable line commutated converter(CLCC)with controllable switching off capability has been applied in recent years.In order to ve-rify the rationality and correctness of the design of CLCC,accurately reflect the electrical stress of each component,the operation test item of CLCC converter valve is studied combined with the operation characteristics of CLCC conver-ter valve and the operation test of traditional thyristor converter valve and hybrid DC circuit breaker.The topological structure and working principle of CLCC converter valve,the operation test method,and the simulation verification are introduced.Finally,the CLCC converter valve prototype successfully verifies the reliability of CLCC converter valve.
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