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Energies 2017, 10(10), 1540; https://doi.org/10.3390/en10101540

Advanced Reactive Power Reserve Management Scheme to Enhance LVRT Capability

1
School of Electrical Engineering, Korea University, Anam Campus, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
2
Korea Electric Power Research Institute (KEPRI), Korea Electric Power Corporation (KEPCO), 105 Munji-Ro, Yuseong-Gu, Deajeon 305-760, Korea
*
Author to whom correspondence should be addressed.
Received: 7 September 2017 / Revised: 27 September 2017 / Accepted: 27 September 2017 / Published: 5 October 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Abstract

Abstract: To increase the utilization of wind power in the power system, grid integration standards have been proposed for the stable integration of large-scale wind power plants. In particular, fault-ride-through capability, especially Low-Voltage-Ride-Through (LVRT), has been emphasized, as it is related to tripping in wind farms. Therefore, this paper proposes the Wind power plant applicable-Effective Reactive power Reserve (Wa-ERPR), which combines both wind power plants and conventional generators at the Point of Interconnection (POI). The reactive power capability of the doubly-fed induction generator wind farm was considered to compute the total Wa-ERPR at the POI with reactive power capability of existing generators. By using the Wa-ERPR management algorithm, in case of a violation of the LVRT standards, the amount of reactive power compensation is computed using the Wa-ERPR management scheme. The proposed scheme calculates the Wa-ERPR and computes the required reactive power, reflecting the change of the system topology pre- and post-contingency, to satisfy the LVRT criterion when LVRT regulation is not satisfied at the POI. The static synchronous compensator (STATCOM) with the capacity corresponding to calculated amount of reactive power through the Wa-ERPR management scheme is applied to the POI. Therefore, it is confirmed that the wind power plant satisfies the LVRT criteria by securing the appropriate reactive power at the POI, by applying of the proposed algorithm. View Full-Text
Keywords: low voltage ride through (LVRT); doubly-fed induction generator (DFIG); wind power plant applicable-effective reactive power reserve (Wa-ERPR); voltage control low voltage ride through (LVRT); doubly-fed induction generator (DFIG); wind power plant applicable-effective reactive power reserve (Wa-ERPR); voltage control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lee, H.; Bae, M.; Lee, B. Advanced Reactive Power Reserve Management Scheme to Enhance LVRT Capability. Energies 2017, 10, 1540.

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