【摘要】 为了解决背靠背换流站选址难度大、用地紧张的问题，可利用周边已建成的相关联交流变电站作为换流站的交流场。针对交流变电站作为换流站的交流场存在的问题，对换流站直流保护配置、柔性直流变压器进线断路器监控及换流站与交流变电站之间的信号交互等进行分析，并提出了柔直变保护的改进设计方案、换流站顺序控制、最后断路器保护、换流站跳柔直变进线开关的实现方案，以保证交流变电站和换流站两站安全运行。该方案已在广东电网中通道工程得到应用。更多还原

【Abstract】 Site selection of back-to-back converter stations is difficult and land use is limited. To solve this problem, the related AC substations built around can be used as the AC field of the converter station. Aiming at the problems existing in the AC substation as the AC field of the converter station, the DC protection configuration of the converter station, the monitoring of the incoming circuit breaker of the flexible DC transformer, and the signal interaction between the converter station and the AC substation are analyzed. The improved design scheme of the flexible-to-direct transformer protection, the sequence control of the converter station, the final circuit breaker protection, and the realization scheme of the flexible-to-direct transformer incoming switch of the converter station are proposed to meet the safe operation of the AC transformer station and the converter station. The scheme has been applied in the channel project of Guangdong Power Grid.更多还原