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대규모 발전단지 상시제약 감소를 위한 에너지 저장장치(ESS) 적용에 관한 연구

A Study on Energy Storage System(ESS) Application for Dynamic Stability Improvement and Generation Constraint Reduction

  • Lee, Jae-Gul (Power Transmission Lab. KEPCO Research Institute) ;
  • Jung, Solyung (Power Transmission Lab. KEPCO Research Institute) ;
  • Choi, Jang-Hum (Power Transmission Lab. KEPCO Research Institute) ;
  • Kim, Yong-Hak (Power Transmission Lab. KEPCO Research Institute) ;
  • Yoon, Yong-Beum (Power Transmission Lab. KEPCO Research Institute)
  • 투고 : 2017.08.18
  • 심사 : 2017.09.25
  • 발행 : 2017.11.01

초록

Prepare a lose of 765kV transmission route in power system operation condition, there are some Special Protection Scheme(SPS)s in Korean power system. These SPS can make some preselected generators are tripped to avoid generator overspeed. Because of many of the new large power plants are installed to existing power generation sites due to the siting problem, the number of generator tripped by SPS should be increased. But that can be a cause of system frequency change under the Under Frequency Relay(UFR) 1st pickup level 59.0Hz. Therefore generation constraint should be considered until new transmission lines are installed. In this paper, we propose the ESS application for generation constraint mitigation by frequency damping control of ESS. To analysis an effect of ESS application, we use PSS/E dynamic simulation tool, CBEST model and controller model. The proposed ESS application is applied to the empirical Korean power system.

키워드

참고문헌

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