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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A study on Protection Coordination Method for Electric Vehicle Charging Facility based on the Wireless Power Transmission

무선전력전송 전기충전설비용 전원공급장치의 최적운용방안에 관한 연구

  • Ryu, Kyung-Sang (System Convergence Laboratory, Korea Institute of Energy Research) ;
  • Kim, Byungki (System Convergence Laboratory, Korea Institute of Energy Research) ;
  • Kim, Dae-Jin (System Convergence Laboratory, Korea Institute of Energy Research) ;
  • Jang, Moon-Seok (System Convergence Laboratory, Korea Institute of Energy Research) ;
  • Rho, Daeseok (Electrical Electronics & Communication Engineering, Korea University of Technology and Education) ;
  • Ko, Hee-Sang (System Convergence Laboratory, Korea Institute of Energy Research)
  • 유경상 (한국에너지기술연구원 시스템융복합연구실) ;
  • 김병기 (한국에너지기술연구원 시스템융복합연구실) ;
  • 김대진 (한국에너지기술연구원 시스템융복합연구실) ;
  • 장문석 (한국에너지기술연구원 시스템융복합연구실) ;
  • 노대석 (한국기술교육대학교 전기전자통신공학부) ;
  • 고희상 (한국에너지기술연구원 시스템융복합연구실)
  • Received : 2017.06.19
  • Accepted : 2017.09.15
  • Published : 2017.09.30
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Abstract

This paper deals with the power supply facility providing wireless power transmission for a type of electric vehicles called the on-line electric vehicle(OLEV) and proposes optimal protection coordination methods which analyze the faultsin the 60Hz and 20kHz bands using PSCAD/EMTDC, which is the typical commercial software for the distribution system. The simulation results show that the proposed methods can reduce the fault current by introducing an NGR (Neutral Ground Resistor) in the 60Hz band and prevent the malfunctioning of the protection device by installing a CT in the neutral wire in the 20kHz band when a ground fault occurs.

본 논문에서는 전기자동차 배터리의 충전 방안 중 하나로 여겨지는 무선전력전송을 이용할 경우 발생 가능한 보호협조 문제점을 분석한다. 전기충전을 위한 무선전력전송 시스템을 구축하기 위해서는 전원공급장치 개발이 필수적이나, 전원공급장치의 정확한 설치기준이 없기 때문에 운용 시 보호협조 상에 문제점이 발생 할 수 있다. 따라서 본 논문에서는 PSCAD/EMTDC로 무선전력전송 전기충전설비용 전원공급장치를 모델링하여 가능성 있는 사고를 모의해보고, 이를 해결할 수 있는 대안을 제시하고자 한다. 즉, 사고 발생 시, 전원공급장치의 60Hz 대역에서 정격차단용량(12.5kA) 상회 가능성과 20kHz 대역에서의 임피던스 병렬화로 인한 보호기기의 부동작 가능성을 시뮬레이션을 통해 확인하였고, 이에 대한 해결책으로 대칭좌표법을 이용한 사고해석 알고리즘과 사고전류를 저감시킬 수 있는 NGR 산정 알고리즘을 제안하였다. 이를 통해 60Hz 대역에서는 NGR(Neutral Ground Resister)을 도입하여 사고전류를 정격차단용량 이하로 저감시키고, 20kHz 대역에서는 중선선에 CT 설치 및 이에 대한 보호정정을 통해 보호기기 부동작이 방지됨을 확인하였다.

Keywords

References

  1. Kesler, M.; Kisacikoglu, M.C.; Tolbert, L.M. Vehicle-to-grid reactive power operation using plug-in electric vehicle bidirectional offboard charger. IEEE Trans. Ind. Electron, 61, pp. 6778-6784, 2014. DOI: https://doi.org/10.1109/TIE.2014.2314065
  2. Guideline for Interconnection of Distributed Generation System in Distribution Systems, KEPCO, 2012.
  3. IEEE 1547.1 "IEEE Standard conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power System", 2005. DOI: https://doi.org/10.1109/IEEESTD.2015.7100815
  4. R. F. Arritt, R. C. Dugan"Distributed generation interconnection transformer and grounding selection" Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, IEEE, pp. 1-7, 2008. DOI: https://doi.org/10.1109/PES.2008.4596772
  5. Jae-Hwan Park, Inductance and Electrical Properties of Wireless Power Transmission Coil, Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology, vol. 6, no. 2, pp. 473-480, Feb. 2016. DOI: http://dx.doi.org/10.14257/AJMAHS.2016.02.12
  6. Hae-Chan Park, Il-Song Kim, Design of Auxiliary Rescue Inverter System, Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology, vol. 6, no. 4, pp. 351-360, April 2016. DOI: http://dx.doi.org/10.14257/AJMAHS.2016.04.18
  7. Jaeoh Kim, Kyung-Jung Lee, Hyun-Sik Ahn, Chanwoo Moon, A Study on Mobile Robot Auto Recharging System Based on Wireless Power Transmission and Visual Information, The Journal of The Institute of Webcasting, Internet and Telecommunication, vol. 11, no. 5, pp. 35-40, 2011.
  8. Young-Kee Ryu, Wireless Power Transmission Technology for Implantable Telemetry Device based on Multiple Transmit Coils, The Journal of The Institute of Internet, Broadcasting and Communication (IIBC), vol. 15, no. 2, pp. 203-211, Apr. 30, 2015. DOI: http://dx.doi.org/10.7236/JIIBC.2015.15.2.203
  9. Sungeon Kim*, Taehyun Jeon, Effect of Interference from DC Power Supply on Power Line Communication Channel, The Journal of The Institute of Internet, Broadcasting and Communication (IIBC), Vol. 14, No. 5, pp.111-115, Oct. 31, 2014. DOI: http://dx.doi.org/10.7236/JIIBC.2014.14.5.111
  10. A. Girgis, S. Brahma, "Effect of Distributed Generation on Protective Device Coordination in Distribution System," Power Engineering, LESCOPE'01. 2001 Large Engineering Systems Conference, 11-13, pp. 115-119. July, 2011.
  11. Philip P. Barker, Robert W. de Mello," Determining the impact of distributed generation on power systems: Part 1 - Radial distribution systems", in Proc. IEEE Power Eng. Soc. Summer Meeting, vol. 3, pp. 1645-1656, 2000. DOI: https://doi.org/10.1109/PESS.2000.868775
  12. Dae-seok Rho, "Countermeasures on bi-directional Protective Device Coordination of smart grid connected to new energy generation", The world of electric, vol. 5, no. 9, pp. 39-43, 2010.
  13. So-Hee Kim and Dae-seok Rho, "Development of Operation System for Customer Protection Devices with Distributed Generation", Korea Academia-industrial cooperation society, announced Fall conference proceedings in 2010, pp. 62-65, nov. 2010. DOI: https://doi.org/10.5762/KAIS.2013.14.6.2971
  14. So-Hee Kim and Dae-seok Rho, "Evaluation Algorithm for Coordination Protection Between Recloser and Distributed Generation Relay", Korea Academia-industrial cooperation society, announced Spring conference proceedings in 2010, pp. 69-72, May 2011.
  15. Daeseok Rho, "Optimal Operation Method for Voltage Regulator in Primary Feeder with Distributed Generators", Journal of KAIS, vol. 12, no. 6, pp. 2698-2706, 2011. DOI: https://doi.org/10.5762/KAIS.2011.12.6.2698