Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Power Monitoring and Distributed Control by Digital Relay

디지털 계전기를 이용한 전력감시 및 분산제어

  • 이성환 (위덕대학교 컴퓨터제어공학과) ;
  • 박상배 (위덕대학교 컴퓨터제어공학과) ;
  • 안인석 (위덕대학교 컴퓨터제어공학과)
  • Received : 2001.04.12
  • Accepted : 2001.08.22
  • Published : 2001.08.31
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Abstract

In this paper, intelligent methods using digital protection relay in power SCADA system is developed in order to protect power systems by means of timely fault detection during operation and control at starting for induction motor which have various load environments and capacities in power systems. The digital protective relay was designed with DSP CPU(TMS320C31) to protect and measure more quickly and precisely. The test result on the basis of KEMC 1120 and IEC60255, show that the operation time error of the digital motor protection relay is improved within ${\pm}5%$. Also, we can control motors at starting according to starting types with simple method as programmable sequence editor. So we can improve the demerits of high cost and much manhour for rework.

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