Joint active and reactive for allocation of renewable energy and energy storage under uncertain coupling

P.H. Jiao, J.J. Chen, X. Cai, L.L. Wang, Y.L. Zhao, X.H. Zhang and W.G. Chen

Applied Energy, 2021, vol. 302, issue C, No S0306261921009582

Abstract: Growing energy storage systems for intermittent renewable energy to maintain the power balance has expanded the investment cost in distribution network planning. Existing works on the energy storage system and intermittent renewable energy allocation, however, do not adequately consider the joint operation of active and reactive power under uncertain coupling, leading to a lack of economic efficiency in the investment decision. Regarding this, a techno-economic framework is urgently needed to take the responsibility of accommodating intermittent renewable energy. To do so, a joint active and reactive operation strategy is developed to fully harness the potential flexibility existed in intermittent renewable energy and energy storage system, and to determine their optimal allocation under uncertain coupling. In the proposed strategy, the state of energy is simulated via the Fourier-Legendre series to capture the charging/discharging characteristic of the energy storage system. The expected reserve and expected curtailment to address the risk caused by uncertainties are respectively modeled by a joint probability-based value of loss load and value of power curtailment. To tackle the net load fluctuation imposed by intermittent renewable energy, a price-based active and reactive integrated demand response is established. Case studies prove the feasibility and effectiveness of the proposed model in reducing annual cost, flattening net load curve as well as improving voltage quality for stochastic distribution network planning.

Keywords: Distribution network; Energy storage system; Imtermittent renewable energy; Integrated demand response; Uncertain coupling (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (5)

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DOI: 10.1016/j.apenergy.2021.117582

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