The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring

doi:10.11930/j.issn.1004-9649.2016.04.032.06

Abstract

Abstract: In order to analyze the impact of converter valve’s on-off on the tower arrester grading ring, the electrostatitic field finite element method is applied to analyze the electric field distribution on the surface of tower arrester grading ring. Firstly, the loading mode in calculation is analyzed for each valve assembly of the converter valves based on the principle of the 12 pulse rectifier circuit. Then, the potential waveform of main equipment in the valve hall under rated power and light load power is obtained by simulation. Finally, by using the instantaneous loading method of electrostatic field, the distribution characteristics and the maximum value location of the electric field intensity on the tower arrester grading ring is obtained under various working conditions. It is found through analyzing the maximum electric field intensity on the tower arrester grading ring and the converter valve’s on-off state, that the maximum electric field intensity on the tower arrester grading ring under OFF state is higher than that under ON state, which shows that the converter valve on the OFF state had greater impact on the equipment around than that on the ON state.

Key words: converter valve, grading ring, arrester, valve hall, ON and OFF state, maximum field intensity

CLC Number:

TM835

DONG Zhiyong, DU Zhiye, RUAN Jiangjun, JIN Shuo, ZHOU Sheng, HU Rong, SUN bangxin. The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring[J]. Electric Power, 2016, 49(4): 32-37.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.04.032.06

https://www.electricpower.com.cn/EN/Y2016/V49/I4/32

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