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Energies 2017, 10(9), 1257; doi:10.3390/en10091257

A Three-Part Electricity Price Mechanism for Photovoltaic-Battery Energy Storage Power Plants Considering the Power Quality and Ancillary Service

School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
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Received: 8 July 2017 / Revised: 3 August 2017 / Accepted: 16 August 2017 / Published: 24 August 2017
(This article belongs to the Section Energy Storage and Application)
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Abstract

To solve the problem of solar abandoning, which is accompanied by the rapid development of photovoltaic (PV) power generation, a demonstration of a photovoltaic-battery energy storage system (PV-BESS) power plant has been constructed in Qinghai province in China. However, it is difficult for the PV-BESS power plant to survive and develop with the current electricity price mechanism and subsidy policy. In this paper, a three-part electricity price mechanism is proposed based on a deep analysis of the construction and operation costs and economic income. The on-grid electricity price is divided into three parts: the capacity price, graded electricity price, and ancillary service price. First, to ensure that the investment of the PV-BESS power plant would achieve the industry benchmark income, the capacity price and benchmark electricity price are calculated using the discounted cash flow method. Then, the graded electricity price is calculated according to the grade of the quality of grid-connected power. Finally, the ancillary service price is calculated based on the graded electricity price and ancillary service compensation. The case studies verify the validity of the three-part electricity price mechanism. The verification shows that the three-part electricity price mechanism can help PV-BESS power plants to obtain good economic returns, which can promote the development of PV-BESS power plants. View Full-Text
Keywords: PV-BESS power plants; three-part electricity price; capacity price; graded electricity price; ancillary service price PV-BESS power plants; three-part electricity price; capacity price; graded electricity price; ancillary service price
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Gao, Y.; Xue, F.; Yang, W.; Sun, Y.; Sun, Y.; Liang, H.; Li, P. A Three-Part Electricity Price Mechanism for Photovoltaic-Battery Energy Storage Power Plants Considering the Power Quality and Ancillary Service. Energies 2017, 10, 1257.

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