Title :
The study of the corona current characteristics of transmission line insulators
Author :
Nie, Yixiong ; Wen, Yuanfang ; Liu, Chun ; Yin, Xianggen ; Mao, Mulong ; Tian, Zhigang ; Peng, Changjiang ; Yin, Jiangsheng
Author_Institution :
Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This paper introduced the experimental results of the corona current characteristic of insulator strings at high alternating voltages. The experiments show that the corona current pulses have statistic characteristic and are distinct at different voltages and different environmental condition, such as humidity and contamination. After the establishment of several fuzzy membership functions of humidity and contamination by a large number of experiments, the authors proved that the fault insulators could be distinguished from the transmission line insulator strings by the combination of statistic N-Ψ graph method and fuzzy logical reasoning, and the correctness of this method has been verified in the laboratory by the 110 kV simulation transmission line. The most important advantages of this method are safe and convenient
Keywords :
corona; fuzzy set theory; graph theory; humidity; insulator contamination; insulator testing; power overhead lines; 110 kV; contamination; corona current characteristic; corona current pulses; environmental condition; fault insulators; fuzzy logical reasoning; fuzzy membership functions; high alternating voltages; humidity; insulator strings; statistic N-Ψ graph method; transmission line; Contamination; Corona; Fault detection; Fuzzy logic; Fuzzy reasoning; Humidity; Insulation; Power transmission lines; Transmission lines; Voltage;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973652
