ＳＷＴＡ自动励磁装置增设欠磁保护望亭发电厂龚金和增设欠磁保护的原因ＳＷＴＡ自动励磁装置中的低励限制器，其作用是防止测量系统误发低励信号。而该装置原设计没有考虑防止限制器误限制的措施，当Ⅰ段和Ⅱ段瞬时电流限制器、强励限制器、伏／赫限制器误发限制信号时仍... SWTA Automatic Excitation Device Adds Under-Magnetic Protection Wang Ting Gong Power Plant and increase the reasons for the lack of magnetic protection SWTA automatic excitation device in the low excitation limiter, its role is to prevent the measurement system false low-excitation signal. The original design of the device did not consider the measures to prevent the limiter error limit, when Ⅰ and Ⅱ instantaneous current limiter, strong excitation limiter, volt / he limiter limit error signal when the error is still ...