The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
권호 표지
DOI QR코드

DOI QR Code

The Implementation of Active Leakage Current Detecting Algorithm based on 16 bit Signal Processor

16비트 신호처리 프로세서 기반 유효성분 누설전류 감지 알고리즘 구현

  • Han, Young-Oh (Dept. of Electric Engineering, Namseoul University)
  • 한영오 (남서울대학교 전자공학과)
  • Received : 2016.06.10
  • Accepted : 2016.06.24
  • Published : 2016.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The ELCB(: Earth Leakage Circuit Breaker) is the only way being used to prevent accidents from happening caused by electrical disaster. However, the existing ELCB has a limit to prevent damages to life and property due to a electric fire and a human body electric shock caused by the resistive leakage current, because of detecting the total leakage current in the block range of 15mA~30mA. It also has problems such as reduced productivity and reliability due to malfunctions by capacitive leakage currents. In this study, we have implemented the algorithm for the resistive leakage current detection technique and developed the resistive leakage current detection module based on a MSP430 processor, 16bit signal processor and this module can be operated in a desired block threshold within 0.03 seconds as specified in KS C 4613.

누전차단기는 전기재해로 인한 사고를 미연에 방지하기 위해 사용되는 유일한 방법이다. 그러나 기존의 누전차단기는 15mA~30mA의 차단범위에서 합성 누설전류를 검출하여 동작하기 때문에 저항성 누설전류에 의해 발생하는 화재 및 인체감전으로 인한 인명 및 재산피해를 미연에 방지하는데 한계가 있다. 또한 용량성 누설전류에 의한 오동작으로 인한 생산성 감소 및 신뢰성 등의 문제를 가지고 있다. 본 연구에서는 기존 누전차단기의 문제를 해결하기 위해 위상차를 측정을 통하여 유효성분(저항성) 누설전류를 감지할 수 있는 알고리즘을 개발하였고, 감지된 누설전류를 기술표준규격에서 규정하는 0.03초 이내에 차단을 할 수 있도록 16 bit 신호처리 프로세서인 MSP430 프로세서를 사용하여 유효성분 누설전류 감지 알고리즘을 구현하였다.

Keywords

References

  1. Y. Han and D. Kim, "The development of a android application for intelligent outlets," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 4, 2013., pp. 447-452.
  2. K. Ban, K. Yoon, J. Park, M. Nam, and N. Kim, "The design of control algorithm for leakage current detection and blocking," Int. and Control Proc., 2003, pp. 417-420.
  3. C. Shoi, H. Kim, and D. Kim, "Flame Spread and Damaged Properties of RCD Cases by Tracking," IEEE Trans. PE, vol. 127, no. 1, 2007, pp.321-326 https://doi.org/10.1541/ieejpes.127.321
  4. Korea Industrial Standards, KS C 4613, Korea Industrial Standards Association, 2006.
  5. IEC 61009-1 : Residual current operated circuit-breakers with integral over current protection for household and similar uses(RCBO's) : General rules, 2002.
  6. Y. Go, "The Arc Fault Determination Method for the Electric Fire Prevention," J. of the Korea Institute of Electronic Communication Sciences, Vol. 3, No. 4, pp. 260-265, 2008.
  7. Texas Instruments, "MSP430x4xx Family User's Guide," Texas Instruments Document, pp. 1-946, 2013.
  8. Y. Han, "The development of a Leakage Current Detection Module for outlets," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 4, 2013, pp. 447-452.
  9. S. Ham, S. Han, and C. Go, "The New Earth Leakage Breaker Operating with Resistive Leakage Current," J. of the Korean Institute of Electrical Engineerings, vol. 57, no. 2, 2008, pp. 198-207.