Dynamic Operational Strategies of UPFC in the KEPCO Transmission System

  • Chang, B.H. (Korea Electric Power Research Institute (KEPRI) of the Korea Electric Power Corporation (KEPCO)) ;
  • Choo, J.B. (Korea Electric Power Research Institute (KEPRI) of the Korea Electric Power Corporation (KEPCO)) ;
  • Lima, Leonardo T.G. (Power Technologies, Inc. (PTI)) ;
  • Feltes, James W. (Power Technologies, Inc. (PTI))
  • Published : 2003.09.01

Abstract

The Korea Electric Power Corporation (KEPCO) has installed an 80 MY A Unified Power Flow Controller (UPFC) at its 154㎸ 'Kang-Jin Substation in South Korea. The device, manufactured by Siemens & Hyusung, has been operational since October 2002. The Korea Electric Power Research Institute (KEPRI), a division of KEPCO was tasked to study operational strategies that could be employed for the UPFC and surrounding reactive support devices concerning problems of low voltages and overloads in the Mokpo & Gwangju areas. Particular apprehension surrounded the possibility of delay in the installation of a new 345㎸ transmission line from 2005 to beyond 2010. The studies were to specifically determine whether these problems could be eliminated by application of a UPFC. The analysis included determining the UPFC operating point under various conditions, investigations of the coordination between the UPFC and a HYDC line terminating in this area, and the design of a supplementary damping controller for the UFPC. This paper summarizes the results of those studies, demonstrating the dynamic characteristics of the operation of this UPFC operation in the Korean power system.

Keywords

References

  1. Jin-Boo Choo and Byung-Hoon Chang, 'Development of FACTS Operation Technology (Phase 1: Decision of a Type and a Spec. Draft for the Installation of a Pilot Plant)', KEPRI Technical Report, April, 1999
  2. In-Sup, Kim, 'Long-term Forecast of KEPCO System Planning and Operation, in Korea', in Proceedings of 1998 Power System Engineering Symposium, KIEE, May, 1998
  3. High Voltage Direct Current Handbook, EPRI TR? 104166S, 1994
  4. Schauder, C., et al, 'AEP Unified Power Flow Controller Performance, IEEE Transactions on Power Delivery, March, 1999
  5. Gyugyi, et al. 'The Unified Power Flow Controller: A New Approach to Power Transmission Control', IEEE Transactions on Power Delivery, April, 1995
  6. Gyugyi, L., Hingorani, N. 'Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems', IEEE press, 2000
  7. Jin-Boo, Choo, et al, 'Development of FACTS Operation Technology (Phase 1: Decision of a Type and a Spec. Draft for the Installation of a Pilot Plant)', KEPRI Technical Report, April, 1999
  8. O. B. Nayak, A. M. Gole, D. G. Chapman, J. B. Davies, 'Dynamic Performance of Static and Synchronous Compensators at HYDC Inverter Bus a very Weak AC System', IEEE Transactions on Power Systems, Vol. 9, No.3, pp. 1350 - 1358, 1994 https://doi.org/10.1109/59.336131
  9. P. Kunder, Power system stability anOd control, Mcgraw Hill, 1996