DOI QR코드

DOI QR Code

A Study on the Implementation and Modeling of 20kW Scale ESS Load Test Device for Emergency Generator

소방용 비상발전기의 현장부하시험을 위한 20 kW급 ESS 부하시험장치 모델링과 구현에 관한 연구

  • Choi, Seung-Kyou (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Lee, Hu-Dong (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Choi, Sung-Sik (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Ferreira, Marito (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Rho, Dae-Seok (Department of Electrical Engineering, Korea University of Technology and Education)
  • Received : 2019.07.30
  • Accepted : 2019.09.06
  • Published : 2019.09.30

Abstract

An emergency generator is key equipment for fire-fighting to supply power to fire-fighting facilities, which protect property and people in cases of fire accidents. A rated load test for emergency generators must be carried out by connecting an emergency load to the generator in accordance with related regulations. However, a no-load test has been performed for emergency generators in general since serious problems can occur when the main power is cut off, including the damage of customer devices and shut down of critical loads. Therefore, this paper proposes a load test method for an emergency generator using energy storage system (ESS) without the interruption of main power. The emergency power system was also modeled based on PSCAD/EMTDC software, and a 200-kW scale ESS load test device was implemented. The simulation and test results show that the load test method is useful and practical for an emergency power supply system.

소방용 비상발전기는 화재 시 인명과 재산을 보호하는 소방 시설에 전원을 공급하는 중요한 설비이다. 이러한 중요성에 따라 관련 법규에서는 의무적으로 비상발전기에 비상용 부하를 연결하여 시험하도록 규정하고 있다. 그러나 실 계통에서는 비상전원계통의 부하운전 시험을 위해 상용 전원을 차단하는 경우 저압기기의 파손, 병원과 같은 중요시설의 응급부하 정지 등 심각한 문제점이 발생할 수 있어, 무부하로 비상발전기를 형식적으로 시험하고 있는 실정이다. 따라서, 본 논문에서는 상기의 문제점을 개선하기 위하여, 상용 전원의 차단 없이 비상발전기에 전기저장장치를 연계하여, 비상용부하의 동작특성과 동일하게 ESS가 충전동작을 수행함으로서 비상발전기의 성능 및 상태를 시험할 수 있는 방안을 제시한다. 또한, 배전계통 상용 해석 프로그램인 PSCAD/EMTDC를 이용하여, 비상발전기, 비상용부하, ESS 부하시험장치로 구성된 비상전원계통의 모델링을 제시하고, 20kW급 ESS 부하시험장치를 구현하여, 이를 바탕으로 다양한 시나리오에 따른 시뮬레이션과 시험을 수행하여 본 논문에서 제안한 ESS 부하시험 장치와 모델링의 유용성을 확인한다.

Keywords

References

  1. National Fire Agency, "Act on Fire Prevention and Installation, Maintenance, and Safety Control of Fire-fighting Systems", Article 25: In-House Inspection, etc. on Fire-Fighting Systems, etc.
  2. Korea Electrical Safety Corporation, "Inspection Guidelines for Emergency Power Generation Facilities", KESG-IV-M-7-2012, 2012.
  3. National Fire Agency, "National Fire Safety Code NFSC 102", Article 8: sources of electricity.
  4. The Seoul Institute, "A Study on the Utilization of Emergency Generators as a Backup Power System", 2014-PR-11, 2014.
  5. Korea Occupational Safety & Health Agency, "Technical Guidelines for Decision and Installation of Emergency Power Source", KOSHA GUIED E-84-2011, 2011.
  6. Korea Electric Engineers Association, "An Investigation on the Operational Status and Perception of Emergency Power Generators for Effective Response to Power Supply Crisis", 2013.
  7. Ministry of Trade, Industry & Energy, "The ESS will be a way to utilize emergency power source", Press Resources, 2016.
  8. Jong-Yong Wang, Byung-Ki Kim, Jea-Bum Park, Byung-Mok Kim, Eung-Sang Kim, Dae-Seok Rho, "A Study on the Modeling and Operation Algorithm of Independent Power System for Carbon Free", The Transactions of the Korean Institute of Electrical Engineers Vol. 65, No. 5, pp. 760-768, 2016. DOI: http://dx.doi.org/10.5370/KIEE.2016.65.5.760
  9. Hong-Yeol Choi, Sung-Sik Choi, Min-Kwan Kang, Dae-Seok Rho, "Optimal Voltage Control Algorithm of Small Hydro Generators for Voltage Stabilization in Distribution system with large scaled PV systems", The Transactions of the Korean Institute of Electrical Engineers Vol. 67, No. 7, pp. 824-832, 2018. DOI: http://doi.org/10.5370/KIEE.2018.67.7.824
  10. Min-Kwan Kang, Sung-Sik Choi, Jae-Beom Park, Yang-Hyeon Nam, Eung-Sang Kim, Dae-Seok Rho, "A Study on the Modeling Method of Performance Evaluation System for MW Scaled Energy Storage System Using the PSCAD/EMTDC", The Transactions of the Korean Institute of Electrical Engineers Vol. 66, No. 6, pp. 885 891, 2017. DOI: http://doi.org/10.5370/KIEE.2017.66.6.885
  11. Yang-Hyun Nam, Sung-Sik Choi, Min-Kwan Kang, Hu-Dong Lee, Ji-Hyun Park, Dae-Seok Rho, "A Study on the Large-scale Adoption Method of Distribution System Interconnected with PV System by Energy Storage System", The Transactions of the Korean Institute of Electrical Engineers Vol. 67, No. 8, pp. 1031-1039, 2018. DOI: http://doi.org/10.5370/KIEE.2018.67.8.1031
  12. Sung-Sik Choi, Min-Kwan Kang, Hu-Dong Lee, Yang-Hyun Nam, Ji-Hyun Park, Dae-Seok Rho, "A Study on an Evaluation Modeling of Power System Performance for Frequency Regulation ESS Based on the PSCAD/EMTDC", The Transactions of the Korean Institute of Electrical Engineers Vol. 67, No. 8, pp. 1024-1030, 2018. DOI: http://doi.org/10.5370/KIEE.2018.67.8.1024