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대지 위험전압 측정기의 설계 및 적용

Design and Application of a Ground Risk Voltage Measurement System

  • 장운용 (한국해양대학교 전기전자공학부) ;
  • 차현규 (한국해양대학교 전기전자공학부) ;
  • 차상욱 (한국해양대학교 전기전자공학부) ;
  • 박대원 (한국해양대학교 전기전자공학부) ;
  • 길경석 (한국해양대학교 전기전자공학부)
  • Jang, Un-Yong (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Cha, Hyeon-Kyu (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Cha, Sang-Wook (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Park, Dae-Won (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Kil, Gyung-Suk (Division of Electrical and Electronics Engineering, Korea Maritime University)
  • 투고 : 2010.12.20
  • 심사 : 2011.01.18
  • 발행 : 2011.03.01

초록

This paper dealt with the design, fabrication and application of a risk voltage measurement system (RVMS) which analyzes the step and touch voltages in electrical grounding systems. The RVMS supply 300 V and 1.4 A in ranges from 40 Hz to 1 kHz as the test power source. A DAQ module having resolution of 400 kS/s and 16 bit is equipped with 7 inputs for measuring voltage and current. Also, a noise elimination algorithm of digital filter was applied to reduce the measurement error caused by external noises as a commercial frequency current. The performance of the RVMS was evaluated by measurement of the step and touch voltage according to the IEEE standard 80 and 81 in a grounding system with a 10 m counterpoise. The result showed that the RVMS analyzes the risk voltage with the error below 5%.

키워드

참고문헌

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  2. Ronald P. O Riley, DELMAR, 40 (2002).
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