Numerical Electric Field Analysis of Power Status Sensor Observing Power Distribution System Taking into Account Voltage Divider Measurement Circuit

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  • Kubo Takuro
    Graduate School of Science and Engineering, Saga University
  • Furukawa Tatsuya
    Graduate School of Science and Engineering, Saga University
  • Itoh Hideaki
    Graduate School of Science and Engineering, Saga University
  • Fukumoto Hisao
    Graduate School of Science and Engineering, Saga University
  • Wakuya Hiroshi
    Graduate School of Science and Engineering, Saga University
  • Ohchi Masashi
    Department of Electrical, Electronics and Computer Engineering, Faculty of Engineering, Chiba Institute of Technology

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  • 計測分圧回路を考慮した配電系電力状態計測センサの数値電界解析
  • ケイソク ブンアツ カイロ オ コウリョ シタ ハイデンケイ デンリョク ジョウタイ ケイソク センサ ノ スウチ デンカイ カイセキ

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Abstract

We have proposed and preproducted the voltage-current waveform sensor of resin molded type for measuring the power factor and harmonics in power distribution systems. We have executed numerical electromagnetic analyses using the finite element method to estimate the characteristics and behaviours of the sensor. Although the magnetic field analyses for the current sensor have involved the measurement circuit, the electric field analyses have not included the measurement circuit for measuring voltage waveforms of power lines. In this paper, we describe the electric field analyses with the measurement circuit and prove the insulating strength of the proposed sensor permissible to the use in 22kV power distribution systems.

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