Study on On-Line Monitoring Index of MOA

doi:10.11930/j.issn.10.11930.2015.8.80

Abstract

Abstract: The metal oxide arrester (MOA) plays a very important role in the safe operation of power systems. In order to find an appropriate indicator that can reflect the degradation of MOA, a comparative study is made through Matlab simulation on the existing fundamental harmonic resistant current and the third harmonic resistant current. The result shows that the resistant current with fundamental harmonic component and the third harmonic component produced by the fundamental voltage can better reflect the degradation of MOA. In addition,based on Fryze’s power definition, a simple algorithm which can calculate the fundamental harmonic current produced by the fundamental voltage is proposed and its efficiency is validated by simulation.

Key words: MOA, online monitoring, index, harmonic voltage, fundamental harmonic resistant current, capacitive current

CLC Number:

TM862+.1

CAO Hongliang， YANG Zhongjiang， REN Jing, JIANG Su， LI Pengfei，. Study on On-Line Monitoring Index of MOA[J]. journal1, 2015, 48(8): 80-85.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.8.80

https://www.electricpower.com.cn/EN/Y2015/V48/I8/80

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