Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Study on the Propagation Speed of the wide-area power system frequency for the application of FNET

광역 전력계통 주파수 감시망 적용을 위한 광역계통주파수의 전파속도에 관한 연구

  • Kook, Kyung-Soo (Electric Power Research Institute) ;
  • Rho, Dae-Seok (Dept. of Electrical Engineering, Korea University of Technology and Education)
  • 국경수 (미국 전력연구소(EPRI)) ;
  • 노대석 (한국기술교육대학교 정보기술공학부)
  • Published : 2009.08.31
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Abstract

This paper analyzes the propagation speed of the wide-area power system frequency. When a generator supplying the electric power to the grid is accidently tripped due to a disturbance on the systems, power system frequency suddenly drops during the transient period and this propagates from the location of the tripped generator to the other part of the systems like a wave. Since the propagation speed of the power system frequency depends on the own characteristics of power systems, its understanding from the perspective of the wide-area can help us in understanding power systems more correctly. In addition, the propagation speed of the power system frequency is used as a key parameter in the application study of IT based on the internet-based GPS synchronized frequency monitoring network (FENT) which has been recently implemented and operated in U.S. power systems. This paper simulates the generation trip on various locations in U.S. power systems deploying its latest dynamic model and calculates the propagation speed of the power system frequency for the application of FNET.

본 논문은 대규모 전력 송전망에서 발전기가 사고로 인해 순간적으로 전력공급을 중단하게 되었을 때 과도기간 동안 나타나는 전력계통 주파수의 급강하가 탈락된 발전기의 위치로부터 전력 송전망 전체로 파급되어 가는 전파속도를 분석한다. 이러한 전력계통 주파수 동요의 전파속도는 전력계통 고유의 특성에 따라 다르게 나타나기 때문에 광역적 측면에서 전력 수송망의 특성을 이해하는데 중요한 파라미터이며, 최근 미국의 전력 송전망을 대상으로 운영중인 광역 전력계통 주파수 감시스템(FNET)을 활용한 전력 IT 적용연구에서 중요한 파라미터로 활용되고 있다. 본 논문에서는 방대한 규모를 가진 미 동부의 전력송전 연계계통에 대해 최근의 동적모델을 사용하여 다양한 위치에서의 발전기 탈락을 모의한 후 이에 따른 전력계통주파수 동요의 전파 특성을 분석하고 그 전파속도를 제시한다.

Keywords

References

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