高电压技术2011，Vol.37Issue(5)：1216-1223,8.
800kV等级高压隔离开关的交、直流电场仿真计算
Simulation of AC and DC Electric Field for 800 kV Grade High Voltage Disconnector
田冀焕 1沙彦超 1周远翔 1孙玉洲 2孙珂珂 2王占杰2
作者信息
- 1. 清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室,北京100084
- 2. 河南平高电气股份有限公司,平顶山467001
- 折叠
摘要
Abstract
The electric field calculation is important to the structure optimization of the disconnecting switch, the control of the corona loss, the audible noise, and the radio interference level. Consequently, the ANSYS software was used to calculate the AC and DC electric field distribution and to determine the value and the position of the maximum electric field. On the basis of static electric field theory, in the DC field calculation, the steady conduction current field theory was used to calculate the potential distribution on the surface of the disconnector. When the resistivity ratio between different materials was beyond 10 orders of magnitude, the problem of divergent values solved by ordinary finite element method would occur. Therefore, it was proposed that, according to the structure feature of the disconnector, the floating potential of the metal connectors was obtained by calculating the resistances of the supporting insulators firstly. Then the surface potential of the insulators was derived, which was in linear relation with the surface distance. Secondly, with the surface potential distribution of the disconnector, the ANSYS sub-modeling technique was adopted to calculate the electrostatic field distribution in the air domain. Hence, the coupling between conduction current field and static electric field was achieved. Finally, the AC and the DC field results were summarized and compared . The DC field simulation results show that the potential distribution at the interface between disconnector and air domain is continuous, which verifies proposed method.关键词
隔离开关/交、直流电场计算/ANSYS/分布式并行计算/传导电流场/数值发散Key words
disconnector/ AC and DC electric field calculation/ ANSYS/ distributed parallel computation/ conduction current field/ numerical divergence分类
信息技术与安全科学引用本文复制引用
田冀焕,沙彦超,周远翔,孙玉洲,孙珂珂,王占杰..800kV等级高压隔离开关的交、直流电场仿真计算[J].高电压技术,2011,37(5):1216-1223,8.
