Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Development and Performance Test of Online Electrical Safety Monitoring System Applying an Algorithm to Measure Resistive Leakage Currents using Phase Differences

위상차를 이용한 저항성 누설전류 측정 알고리즘을 적용한 온라인 전기안전 감시시스템의 개발 및 성능시험

  • Yoo, Jeong Hyun (Department of Electrical and Computer Engineering, University of Seoul) ;
  • Kim, Hie Sik (Department of Electrical and Computer Engineering, University of Seoul) ;
  • Jeong, Yong Wook (Electrical Safety Research Institute)
  • 유정현 (서울시립대학교 전자전기컴퓨터공학과) ;
  • 김희식 (서울시립대학교 전자전기컴퓨터공학과) ;
  • 정용욱 (전기안전연구원)
  • Received : 2018.05.24
  • Accepted : 2018.06.08
  • Published : 2018.06.30
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Abstract

Nowadays, to prevent electrical accidents in Korea, inspectors directly performed checking general electrical facilities as a cycle from every one to three years. It is difficult to presuppose an omen because intact conditions of electrical equipments are not kept at the time of inspection. In this paper, in order to ensure effectiveness of an online basis electric inspection, we developed an electrical safety IoT system using LoRa communication technology to enable monitoring mainly electrical safety components such as overcurrent, overvoltage, resistive leakage current, and power. Then we proposed a method for verifying performances of the prosed electrical safety IoT system. Resistive leakage currents are calculated by using difference of phase between voltages and currents. We verified that average errors are 0.97%, which reference goal is ${\pm}5%$ for a device, through reliability test according to conditions. Results of this research can be used as basic study materials to develop technologies for measuring three phase leakage current and for implementing public electrical safety. platform.

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References

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