HVDC换流站投切交流滤波器用断路器特殊性能要求

高压直流换流站内交流滤波器组容量大，投切频繁，因此对投切它的断路器的要求有别于常规交流断路器。文中以国内多个已建高压直流工程成套设计为基础，总结换流站投切交流滤波器的各种工况，并利用EMTDC建立模型进行仿真计算，对交流滤波器用断路器的恢复电压、合闸涌流以及开断容性电流等特殊要求进行研究，认为对于高压直流换流站投切交流滤波器用断路器，应增加型式试验和容性电流开断试验，小组断路器应配置选相合闸装置或加装合闸电阻。

Special Performance Requirement of Circuit Breakers to Switch AC Filter Banks of HVDC Converter Station

Due to the high capacity and frequent switching in/out of AC filter banks in HVDC converter station, the performance requirement of circuit breakers to switch in/out AC filter banks differs from that of conventional AC circuit breakers. Based upon the team design of domestic built-up HVDC projects, various operating conditions of switching in/out AC filter banks in converter station are summarized. By use of EMTDC, the modeling and simulation of these operating conditions are conducted and special requirements of the circuit breaker to switch in/out AC filter banks, such as the transient recovery voltage, switching inrush current and switching out capacitive current, are researched. It is suggested that type test and capacitive current switching test should be added for circuit breaks to switch AC filter banks of HVDC converter station. For small group of circuit breaks, phase selecting closing equipment or closing resistance should be equipped.