Research on the Portable Comprehensive Diagnosis Device Applied in 20kV Distribution Line Based on Touch Screen Design

Abstract

Distribution network is the end of power system, which is directly connected with users and can sensitively reflect users' requirements for safety and quality of power supply. Its operation safety, reliability and economy are directly related to social production and people's life. As the artery of power grid operation, whether the distribution line can be quickly located and diagnosed after fault directly affects the fault repair time of the line and the outage time of single power supply users, and then affects the economic benefits of the power grid. Therefore, this paper studies a portable comprehensive fault diagnosis device, which can realize the fault location of small resistance grounding system applied in 20kV distribution line by loading DC high voltage. The experimental results show that the integrated design and the touch screen design of human-computer interaction can make the comprehensive fault diagnosis device more miniaturized, intelligent and practical. The device adopts an integrated portable design, which enables rapid troubleshooting by loading DC high voltage, and can help the emergency repair of 20 kV distribution lines. Through the intelligent fault diagnosis device, not only the ability to identify faults can be improved, but also the security and stability of the distribution network can be improved to avoid huge economic losses due to power failure.