Abstract
The combination of wind and pumped storage is a useful method to compensate the fluctuation of wind power generation, which would exploit the abundant wind potential and increase wind power penetration. Taiwan Power Company (TPC) develops renewable energy actively in recent years. Moreover, TPC has started planning a high penetration wind power system and building offshore wind farms around the coast of Zhangbin, Yunlin and Penghu. The target of the offshore wind power installed capacity is up to 3 GW by 2025. However, the integration of the large scale of wind power would give huge challenges to the system operator because wind is randomly characterized. In this study, after high penetration wind power is integrated, the impacts of system frequency and the dispatch of conventional units will be discussed. Additionally, the hybrid system combing wind power with pumped-storage will be planning to reduce the effect of system frequency.
Highlights
Since the interest in wind power installations has been increased with the new demand for clean and sustainable energy sources, more and more renewable energy is integrated into the power system
In the cases of high penetration wind power integration, the wind variation may cause the load shedding from the system
This paper discusses the impacts of large scale wind power installation and focuses on the coordination of the generating units in the present Tai power system
Summary
Since the interest in wind power installations has been increased with the new demand for clean and sustainable energy sources, more and more renewable energy is integrated into the power system. Large wind penetration requires fast increased regulating power, and the spinning reserves must be closely related to and nearly proportional to the output of the wind generation system. In [4], with high wind power penetration, conventional power plants are displaced and wind speed fluctuations introduce large power imbalances which lead to power system frequency control and operational problems. An automatic load shedding scheme considering the pumped-storage units at Taiwan Power Company (Tai power) is proposed in reference [5]. In reference [6], the introduction of energy storage is considered as the most effective means to remove obstacles to significantly increase wind penetration levels in electric power systems, in the case of isolated island grids. The following section will introduce some significant literature reviews for hybrid wind-pumped systems, especially for several real cases on islands and the optimization problem on the hybrid wind-pumped systems
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