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Energies 2013, 6(7), 3224-3244; doi:10.3390/en6073224
Article

Experimental Research and Control Strategy of Pumped Storage Units Dispatching in the Taiwan Power System Considering Transmission Line Limits

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Received: 25 February 2013 / Revised: 21 May 2013 / Accepted: 25 June 2013 / Published: 3 July 2013
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Abstract

Taiwan’s power system is isolated and not supported by other interconnected systems. Consequently, the system frequency immediately reflects changes in the system loads. Pumped storage units are crucial for controlling power frequency. These units provide main or auxiliary capacities, reducing the allocation of frequency-regulating reserve (FRR) and further reducing generation costs in system operations. Taiwan’s Longmen Nuclear Power Plant is set to be converted for commercial operations, which will significantly alter the spinning reserves in the power system. Thus, this study proposes a safe and economic pumped storage unit dispatch strategy. This strategy is used to determine the optimal FRR capacity and 1-min recovery frequency in a generator failure occurrence at the Longmen Power Plant. In addition, this study considered transmission capacity constraints and conducted power flow analysis of the power systems in Northern, Central, and Southern Taiwan. The results indicated that, in the event of a failure at Longmen Power Plant, the proposed strategy can not only recover the system frequency to an acceptable range to prevent underfrequency load-shedding, but can also mitigate transmission line overloading.
Keywords: Taiwan’s power system; pumped storage units; frequency-regulating reserve; Longmen Nuclear Power Plant; 1-min recovery frequency; underfrequency load-shedding Taiwan’s power system; pumped storage units; frequency-regulating reserve; Longmen Nuclear Power Plant; 1-min recovery frequency; underfrequency load-shedding
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.

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Kuo, M.-T.; Lu, S.-D. Experimental Research and Control Strategy of Pumped Storage Units Dispatching in the Taiwan Power System Considering Transmission Line Limits. Energies 2013, 6, 3224-3244.

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