Year: 2019
Type: conference-paper
Abstract: Common faults on transmission lines, such as insulator pollution flashover, trees flashover, string breakage failure of insulator will undergo a period of discharge before the occurrence of flashover, which is called insulation defect discharge. In this paper, the process of discharge such as floating discharge, insulator pollution discharge and tree discharge is simulated in the laboratory environment and the high frequency current waveform is monitored. The results show that insulation defect discharge will maintain a long period of time and will not immediately form a flashover fault, in addition, a great deal of high frequency discharge current pulses will be generated during this period. The discharge characteristics and the discharge pulses generated by different type of insulation defect discharge are quite different. Frequency of floating discharge current waveform are very high, while the pulse cluster of pollution discharge is dense, and the current waveform generated by tree discharge has notable dispersity. With the degree of discharge increasing, the parameters such as pulse repetition rate and discharge amount are gradually increasing.
Authors: Zhenyao Liu, Song Gao, Haibo Jiang, Rong Guo, Yubin Kang, Xuan Chen
Institution: State Grid Jiangsu Electric Power (China)
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2961397388