Open AccessDevelopment of online monitor for substation 10 kV MOA
Author(s) -
Song Xinming,
Xia Yunfeng,
He Jianzong,
Jia Zhidong,
Wang Xilin
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8394
Subject(s) - emtp , resistive touchscreen , transient (computer programming) , electrical engineering , voltage , wireless , computer science , reliability engineering , leakage (economics) , electronic engineering , engineering , electric power system , power (physics) , telecommunications , physics , quantum mechanics , economics , macroeconomics , operating system
Metal oxide arresters (MOA) are widely used for over‐voltage protection of power facilities in 10 kV distribution networks, and it is hard to determine the failure ones. This study presented an online monitor for 10 kV MOA used in substation. Firstly, with simulation on electromagnetic transient program (EMTP), the authors found that the resistive component of leakage current flowing through the MOA could reflect its health status. Then the principle of detecting the resistive leakage current flowing MOA by the harmonic analysis method is introduced. Finally, a remote monitoring system for MOA based on wireless communication technology is built and testing experiments of monitoring the health status of MOA has been done.