Details

Autor(en) / Beteiligte

• Zhou, Lingzi
• Tang, Zhenpeng
• Ma, Chengzhi
• Zheng, Hai
• Cheng, Fangzheng
• Liu, Zichen
• Yin, Fanghui
• Wang, Liming

Titel

Experimental study on electrical characteristics of iced glass suspension ground wire insulator

Ist Teil von

• 2022 IEEE 5th International Electrical and Energy Conference (CIEEC), 2022, p.1660-1664

Ort / Verlag

IEEE

Erscheinungsjahr

2022

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• Under cold weather conditions, the icing of ground wire insulator will pose a challenge to the insulation coordination between air gap and the insulator itself. It can also increase the probability of abnormal discharge which will lead to power loss. In this paper, the development process of arc is recorded by an ultrahigh-speed camera, and the effects of icing thickness and freezing water conductivity on air gap breakdown voltage are studied. The surface electric field of ground wire insulator under different icing thicknesses and freezing water conductivities is simulated and analyzed by simulation software. Furthermore, the influence of the above factors on the maximum surface electric field intensity of ground wire insulator is also investigated. The simulation and experimental results show that both the gap breakdown voltage decreases while the maximum surface electric field intensity increases with the increase of icing thickness. The increase of freezing water conductivity will cause the gap breakdown voltage to decrease first and then levels off. For the maximum surface electric field intensity, it increases first and then remain unchanged with the increase of freezing water conductivity. In addition, the observation results show that the arc is always initiated from the bottom of the plate electrode during air gap breakdown.