TY - GEN
T1 - The Impact of Helium Gas Content on the Insulation Performance of Dry Air
AU - Gao, Qingqing
AU - Miao, Jiale
AU - Guan, Huai
AU - Yang, Aijun
AU - Wang, Xiaohua
AU - Wang, Chuang
N1 - Publisher Copyright:
© Beijing Paike Culture Commu. Co., Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - In response to growing environmental concerns, this study proposes the use of dry air as an insulating gas in gas-insulated switchgear (GIS) to replace the traditional SF6 gas. To address the problem of gas leakage, the helium tracer method is employed to detect the leakage of insulating gas within the equipment, focusing on the impact of helium addition on the insulation performance of GIS. Electrodes and experimental chambers were designed to simulate the electric field conditions under actual operating circumstances. Breakdown voltage experiments at power frequency were conducted to study the insulation performance of mixed gases with three different concentrations of helium under two pressure conditions. The breakdown voltage values at power frequency were theoretically analyzed from the perspective of gas discharge. Additionally, the breakdown voltage dispersion of mixed gases with different concentrations of helium was analyzed, considering the operational stability of GIS equipment. The experimental results indicate that the addition of helium has a negligible effect on the insulation performance of dry air when compared to the pure dry air power frequency breakdown results. This confirms that the helium tracer method is an effective technique for detecting the leakage of insulating gas in environmentally friendly dry air GIS equipment.
AB - In response to growing environmental concerns, this study proposes the use of dry air as an insulating gas in gas-insulated switchgear (GIS) to replace the traditional SF6 gas. To address the problem of gas leakage, the helium tracer method is employed to detect the leakage of insulating gas within the equipment, focusing on the impact of helium addition on the insulation performance of GIS. Electrodes and experimental chambers were designed to simulate the electric field conditions under actual operating circumstances. Breakdown voltage experiments at power frequency were conducted to study the insulation performance of mixed gases with three different concentrations of helium under two pressure conditions. The breakdown voltage values at power frequency were theoretically analyzed from the perspective of gas discharge. Additionally, the breakdown voltage dispersion of mixed gases with different concentrations of helium was analyzed, considering the operational stability of GIS equipment. The experimental results indicate that the addition of helium has a negligible effect on the insulation performance of dry air when compared to the pure dry air power frequency breakdown results. This confirms that the helium tracer method is an effective technique for detecting the leakage of insulating gas in environmentally friendly dry air GIS equipment.
KW - Dry Air Insulation
KW - GIS Equipment Leakage Detection
KW - Helium Tracer Gas Method
KW - Power Frequency Breakdown Voltage
UR - https://www.scopus.com/pages/publications/105003623118
U2 - 10.1007/978-981-96-4675-3_57
DO - 10.1007/978-981-96-4675-3_57
M3 - 会议稿件
AN - SCOPUS:105003623118
SN - 9789819646746
T3 - Lecture Notes in Electrical Engineering
SP - 566
EP - 573
BT - The Proceedings of the 19th Annual Conference of China Electrotechnical Society - Volume VII
A2 - Yang, Qingxin
A2 - Bie, Zhaohong
A2 - Yang, Xu
PB - Springer Science and Business Media Deutschland GmbH
T2 - 19th Annual Conference of China Electrotechnical Society, ACCES 2024
Y2 - 20 September 2024 through 22 September 2024
ER -