TY - GEN
T1 - Investigation of Surface Charge Accumulation Characteristics of Insulators in HSS
AU - Zhang, Changhong
AU - Li, Yixuan
AU - Zhang, Boya
AU - Li, Weiguo
AU - Li, Shijie
AU - Ruan, Yanjun
AU - Yang, Xu
AU - Lv, Jinzhuang
AU - Li, Mingyang
AU - Li, Xingwen
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - As the key equipment of flexible DC transmission, the operational reliability of DC high speed switch (HSS) is of great significance. However, surface charge gradually accumulated on the insulators under DC voltage when the HSS double-break is in the opening position, which further resulting in the electric field distortion and even discharge. In this paper, a 3D finite simulation model was established on the basis of the operating conditions of HSS. What' s more, the worst operation condition of HSS that under the opening position was calculated and analyzed. Then the multi-coupled surface charge accumulated model which considered charge drift and diffusion was established based on the obtained most severe condition. Morever, the electric field distribution and charge distribution of insulators in HSS breaker chamber was computed. The gas-solid charge accumulation characteristics of insulators and its effect on electric field was analyzed. The results show that the surface charge density of nozzle is much greater than the FRP pipe inside the breaker chamber. The obtained results provide a guidance for the design of HSS double-break.
AB - As the key equipment of flexible DC transmission, the operational reliability of DC high speed switch (HSS) is of great significance. However, surface charge gradually accumulated on the insulators under DC voltage when the HSS double-break is in the opening position, which further resulting in the electric field distortion and even discharge. In this paper, a 3D finite simulation model was established on the basis of the operating conditions of HSS. What' s more, the worst operation condition of HSS that under the opening position was calculated and analyzed. Then the multi-coupled surface charge accumulated model which considered charge drift and diffusion was established based on the obtained most severe condition. Morever, the electric field distribution and charge distribution of insulators in HSS breaker chamber was computed. The gas-solid charge accumulation characteristics of insulators and its effect on electric field was analyzed. The results show that the surface charge density of nozzle is much greater than the FRP pipe inside the breaker chamber. The obtained results provide a guidance for the design of HSS double-break.
UR - https://www.scopus.com/pages/publications/85146949815
U2 - 10.1109/ICHVE53725.2022.10014465
DO - 10.1109/ICHVE53725.2022.10014465
M3 - 会议稿件
AN - SCOPUS:85146949815
T3 - 2022 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2022
BT - 2022 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Conference on High Voltage Engineering and Applications, ICHVE 2022
Y2 - 25 September 2022 through 29 September 2022
ER -