대규모 해상풍력단지의 국내 전력계통 고장전류 영향성 분석
Analysis of the impact of fault current in domestic power systems connected tolarge-scale offshore wind farms
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초록
Offshore wind farms have been steadily expanding in power systems due to climate issues. Fault current from an offshore wind farm may be negligible since a small number of wind farms are connected to power systems. The short circuit current contributed by a wind farm is relatively smaller than the fault current contributed by a synchronous generator. However, for a large portion of offshore wind farms, the fault current is no longer negligible. It is required to carefully analyze the fault current of offshore wind farms since the fault property is different from conventional generators. To analyze the short circuit current from offshore wind farms, this paper carried out case studies by using planning data of power systems in Korea. The test results, based on the power systems operated by KEPCO, revealed that faulted buses with an exceeded circuit breaker capacity were found since the fault current contributed by the offshore wind farms has increased.
Abstract
Offshore wind farms have been steadily expanding in power systems due to climate issues. Fault current from an offshore wind farm may be negligible since a small number of wind farms are connected to power systems. The short circuit current contributed by a wind farm is relatively smaller than the fault current contributed by a synchronous generator. However, for a large portion of offshore wind farms, the fault current is no longer negligible. It is required to carefully analyze the fault current of offshore wind farms since the fault property is different from conventional generators. To analyze the short circuit current from offshore wind farms, this paper carried out case studies by using planning data of power systems in Korea. The test results, based on the power systems operated by KEPCO, revealed that faulted buses with an exceeded circuit breaker capacity were found since the fault current contributed by the offshore wind farms has increased.
참고문헌 (11)
- International Energy Agency, "World Energy Outlook 2019", ~ (2019)
- Ministry of Trade and Industry, "Renewable source shares in renewable 3020 policy", ~ (2017)
- IEEE, "Task Force on Short-Circuit and System Performance Impact of Inverter Based Generation", Impact of Inverter Based Generation on Bulk Power System Dynamics and Short-Circuit Performance, ~ (2018)
- Plet, C.A, "Fault response of grid-connected inverter dominated networks", Proceedings of IEEE PES General Meeting, pp.1~8 (2010)
- Barsch, J., "Fault current contributions from wind plants", Proceedings of 2015 68th Annual Conference for Protective Relay Engineers, pp.137~227 (2015)
- Baran, M.E, "Fault analysis on distribution feeders with distributed generators", IEEE Trans. Power Syst., 20, pp.1757~1764 (2005)
- Barker, P, "Determining the impact of DG on power systems radial distribution", Proceedings of 2000 Power Engineering Society Summer Meeting. IEEE, pp.1645~1656 (2000)
- "Understanding fault characteristics of inverter-based distributed energy resources; National Renewable Energy Laboratory" (2010)[URL]
- Nimpitiwan, N., "Fault current contribution from synchronous machine and inverter based distributed generators", IEEE Trans. Power. Deliv, 22, pp.634~641 (2007)
- Kanellos, F. D., "Wind Farms Modeling for Short-Circuit Level Calculations in Large Power Systems", IEEE Trans. Power Deliv., 24, pp.1687~1695 (2009)
- Ministry of Trade and Industry, "Offshore wind power generation plan that works with residents and coexists with the fishery industry", ~ (2020)