Single-phase fault positioning device and method based on injection signal

• Main Authors: GU NIU, SUN MINGHE, PAN XINGHANG, WANG PENG, HU RUIJIA, FENG JUN, HOU LIANGXIAO, ZHANG YIXU, WANG LUN, JIANG XUENING
• Format: Patent
• Language: Chinese; English
• Published: 21.10.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention provides a single-phase fault positioning device and method based on injection signals, and belongs to the technical field of single-phase fault positioning. The single-phase fault positioning device comprises a signal generator, a voltage transformer and a signal finder; the signal generator is used for generating a 100Hz alternating current signal and a 100Hz direct current signal; the voltage transformer is used for injecting the signal generated by the signal generator into a suspicious line; the signal tracing device is used for collecting injected signals from a voltage transformer, analyzing paths and characteristics of the signals and locating fault lines and fault points; according to the method, the signal is injected into the power grid after the single-phase fault occurs, single-phase fault line selection and fault point determination are performed through signal tracing, and rapid positioning of the single-phase fault is realized. 本发明提出了一种基于注入信号的单相故障定位装置及方法，属于单相故障定位技术领域，单相故障定位装置包括信号