A Study on the Improvement for Power Quality Problems Caused by Electrical Arc Furnace in Power Systems

전력계통에서 전기로 부하에 대한 전력품질 개선방안에 관한 연구

  • Kim, Jae-Eon (School of Electrical & Computer Engineering, Chungbuk National University) ;
  • Rho, Dae-Seok (School of Information Technology, Korea University of Technology and Eduaction)
  • Published : 2007.06.30

Abstract

This paper deals with a powerful countermeasure for power quality problems caused by the operation of electrical arc furnace in bulk power systems. The rapid active load fluctuations of electrical arc furnace could produce several problems such as voltage flicker and active power oscillations. The typical methods using only the reactive power compensation have their own limitation in solving the power quality problems caused by active load variations. The coordination of both active and reactive power compensation is required to solve the power quality problems. This paper focuses on the impacts and the dynamic phenomena caused by the active load fluctuation. This paper proposes the optimal algorithm for the active power compensation based on the function of 1(n ratio and the concepts for the active power compensation. The results from a case study show that the proposed methods can be a practical tool for the power quality problems in power systems.

최근에 전기 아-크로의 보급과 그 운전으로 전력계통에 전압플리커 및 유효전력변동과 같은 전력품질상의 문제가 발생될 가능성이 높은 것으로 보고되고 있다. 이 문제를 해결할 수 있는 방법에는 대표적으로 무효전력보상방법이 있는데, 이것은 유효전력변동의 전력품질문제해결에는 한계가 있다. 따라서, 본 논문에서는 이의 해결책으로서 X/R 비율에 근거한 유효전력보상 개념과 그 최적앨고리즘을 제안하여 이의 타당성을 모델링과 시뮬레이션을 통하여 검증하였다.

Keywords