虚拟接地支路
invented grounded- branches
电支路接口单元
electrical tributary interface units
发电机励磁回路接地
excitation winding grounding fault of generator
发电机励磁回路接地故障
excitation winding grounding fault of generator
非直接接地电网
non solidly grounded network
光支路接口
optical tributary interface
接地等化电感器
ground equalizer inductor