【摘要】 针对汉川电厂一、二期工程厂用电备用电源不能互为备用，造成２ 台启备变计划检修和事故抢修极难进行的问题，作了２ 台启备变互为备用的设计。该系统经安装、调试、运行后，增加了两期工程运行方式的灵活性及供电的可靠性，给计划检修及故障处理提供了极大的便利。更多还原

【Abstract】 The auxiliary power of the first and second phase project in Hanchuan power plant can’t be backing up for each other and this cause difficulty in planned maintenance and fault maintenance.The paper introduced a design to use the two auxiliary transformers as backing up for each other.Through installation,commissioning and operation,the system is proved to have increased operation flexibility and power supply reliability,and brought great convenience to the planned maintenance and fault treatment of the two transformers.更多还原