Mitigation of Distributed Generation Impact on Protective Devices in a Distribution Network by Superconducting Fault Current Limiter
- 1 School of Information Technology and Electrical Engineering, University of Queensland, Australia
- 2 College of Electrical and Information Engineering, Hunan University, Changsha, China
- 3 School of Information Technology and Electrical Engineering, University of Queensland, Australia
- 4 School of Information Technology and Electrical Engineering, University of Queensland, Australia
Abstract
Protection of radial distribution networks is widely based on coordinated inverse time overcurrent relays (OCRs) ensuring both effectiveness and selectivity. However, the integration of distributed generation (DG) into an existing distribution network not only inevitably increases fault current levels to levels that may exceed the OCR ratings, but it may also disturb the original overcurrent relay coordination adversely effecting protection selectivity. To analyze the potentially adverse impact of DG on distribution system protective devices with respect to circuit breaker ratings and OCR coordination fault current studies are carried out for common reference test system under the influence of additional DG. The possible advantages of Superconducting Fault Current Limiter (SFCL) as a means to limit the adverse effect of DG on distribution system protection and their effectiveness will be demonstrated. Furthermore , minimum SFCL impedances required to avoid miss-operation of the primary and back-up OCRs are determined. The theoretical analysis will be validated using the IEEE 13-bus distribution test system is used. Both theoretical and simulation results indicate that the proposed application of SFCL is a viable option to effectively mitigate the DG impact on protective devices, thus enhancing the reliability of distribution network interfaced with DG.
- P. P. Barker and R. W. de Mello, “Determine the Impact of Distribution Generation on Power Systems: Part 1- radial Distribution Systems,” Power Technologies, Inc., 2000.
- N. Hadjsaid, J. F. Canard and F. Dumas, “Dispersed Generation Impact on Distribution Networks,” IEEE Computer Application in Power, Vol. 12, 1999, pp. 22-28. doi:10.1109/67.755642
- C. R. Mason, “The Art and Science of Protection Relaying,” General Electric Company, 1965.
- A. A. Girgis and S. M. Brahma, “Effect of Distributed Generation on Protective Device Coordination in Industry System”, in Proceedings of Large Engineering Systems Conference on Power Engineering, 2001, pp. 115-119.
- S. M. Brahma and A. A. Girgis, “Microprocessor Based Reclosing to Coordinate Fuse and Recloser in a System with High Penetration of Distributed Generation,” in Proceedings of IEEE Power Engineering and Society, Winter Meeting, Vol. 1, 2002, pp. 453-458.
- S. M. Brahma and A. A. Girgis, “Development of Adaptive Protection Scheme for Distribution Systems with high Penetration of Distributed Generation,” IEEE transaction Power Delivery, Vol. 19, No. 1, 2004, pp. 56-63. doi:10.1109/TPWRD.2003.820204
- S. Chaitusaney and A. Yokoyama, “Impact of Protection Coordination on Sizes of Several Distributed Generation Sources,” 7th International Power Engineering Conference, Vol. 2, 2005, pp. 669-674.
- IEEE Standard Inverse –Time Characteristic Equations for Overcurrent Relays, 1997, IEEE Std. C37, pp. 112- 1996.
- Applications of PSCAD/EMTDC, https://hvdc.ca/pscad/
- IEEE PES Distribution Systems Analysis Subcommittee Radial Test Feeders, http://ewh.ieee.org/soc/pes/dsacom/testfeeders/index.html.