KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
권호 표지
DOI QR코드

DOI QR Code

Demonstration of Voltage Control of DC Distribution System Using Real-time DC Network Analysis Applications

실시간 DC 계통해석 응용프로그램을 이용한 DC 배전망 전압제어 실증 연구

  • Kim, Hong-joo (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Cho, Young-pyo (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Cho, Jin-tae (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Kim, Ju-yong (KEPCO Research Institute, Korea Electric Power Corporation)
  • Received : 2019.07.18
  • Accepted : 2019.10.14
  • Published : 2019.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents real-time Direct Current (DC) network analysis applications for operation of DC distribution system or DC microgrid. These applications are installed on central Energy Management System (EMS) and provide solutions of DC network operation. To analysis DC distribution network, this paper proposes composition and sequence of applications. Algorithm of applications is presented in this paper. Demonstration tests are performed on DC distribution site in Gochang Power Testing Center of Korea Electric Power Corporation (KEPCO). To verify the performance, developed DC applications installed on EMS. Scenarios for demonstration test of voltage control are presented. Finally, measured data, application output data and simulation data (by PSCAD/EMTDC) are compared and analyze accuracy of applications.

본 논문은 DC (Direct Current) 배전망 혹은 DC 마이크로그리드 운영을 위한 실시간 DC 계통해석 응용프로그램의 개발에 대한 내용을 다룬다. 응용프로그램은 중앙 에너지 관리시스템(EMS: Energy Management System)에 탑재되어 운영자에게 실시간으로 운영 솔루션을 제공한다. DC 배전계통을 해석하기 위한 프로그램의 구성 및 시퀀스를 제안한다. 각 프로그램의 알고리즘과 AC 계통 프로세스와의 차이점을 분석한다. 한국전력공사 고창전력시험센터 내 DC 배전망 실증사이트를 소개하고, EMS 구축 내용을 기술한다. 개발된 DC 계통해석 응용프로그램을 실증 사이트 EMS에 탑재하여, 검증 시험을 수행한다. DC 배전망 전압 제어를 위한 시험 시나리오를 구성에 대해 논한다. 마지막으로 실증시험 결과 측정 데이터, 응용프로그램 결과 데이터를 PSCAD/EMTDC를 이용한 오프라인 시뮬레이션 결과값과 비교 분석하여 정합성을 검증한다.

Keywords

References

  1. Lana, A., Pinomaa, A., Nuutinen, "Control and monitoring solution for the LVDC power distribution network research site," IEEE First Int. Conf. DC Microgrids (ICDCM), Atlanta, USA, Jun. 2015, pp. 7-10.
  2. Kaipia, T., Nuutinen, P., Lohjala, "Field test environment for LVDC distribution - Implementation experiences," CIRED Workshop, Lisbon, Xi'an, China, 29-30 May 2012.
  3. Nuutinen, P., Kaipia, T., Peltoniemi, "Research site for low-voltage direct current distribution in a utility network - structure, functions, and operation," IEEE Trans. Smart Grid, 2014, 5, (5), pp. 2574-2582. https://doi.org/10.1109/TSG.2014.2308365
  4. Dragi cevi'c, T., Lu, X., Vasquez, "DC microgrids - Part I: A review of control strategies and stabilization techniques," IEEE Trans. Power Electron., 2016, 31, (7), pp. 4876-4891. https://doi.org/10.1109/TPEL.2015.2478859
  5. Youngpyo Cho, Hongjoo Kim, Jaehan Kim, Jintae Cho, Juyong Kim, "Construction of Actual LVDC Distribution Line," 2017 CIRED Conference.
  6. Hongjoo Kim, Youngpyo Cho, Jaehan Kim, Jintae Cho, Juyong Kim, "Demonstration of LVDC Distribution System in Island," 2017 CIRED Conference.
  7. 김홍주, 조영표, 조진태, 김주용, "직류배전설비 연계 직류배전망 통합 운영 실증 연구", 2019년도 대한전기학회 하계학술대회 논문집.
  8. Trinh Phi Hai , Il-Yop Chung , "A Novel Voltage Control Scheme for Low-Voltage DC Distribution Systems Using Multi-Agent Systems," Energies 10(1):41, Jan. 2017. https://doi.org/10.3390/en10010041