An equivalent two source phase domain method for calculating interline fault in the double circuit line is presented.
基于二端口网络理论，采用等值双端电源相分量法进行跨线短路故障计算。
2
The phase lock loop is a feedback control system that makes two telecommunication signals' phase synchronization, suitable to the synchronous trigger circuit of the convertor device.
锁相环路是完成两个电信号相位同步的反馈控制系统，适宜于变流装置的同步触发电路之中。
3
Before the design of digital circuit, measurement method of phase difference is discussed. Two-way zero passage phase detector is chosen as solution finally.