Technical and Economic Analysis on NaS Battery Energy Storage System Based on Peak Shaving

doi:10.3969/j.issn.1000－7229.2014.04.020

Abstract

Abstract:

The energy storage system of NaS battery is suitable for peak shaving because of its high advantage in energy density and energy cost. Based on the operation data of a 1 MW/8 MWh NaS battery system in Meisei University in Japan, technical and economic analysis on NaS battery energy storage system was performed under the different power tariff structures from Japan, USA and China. The results show that NaS battery energy storage system with supporting peak shaving can make a profit in Japan or USA while it can’t in China, because there are a bigger gap between peak and valley quantity price in Japan or a bigger capacity price and a bigger ratio of peak to off-peak electricity price in USA than those in China. Therefore, it is necessary to study reasonable electricity price mechanism for the battery energy storage technique in China, in order to promote the sustainable development of NaS battery energy storage technology.

Key words: NaS battery, energy storage system, peak shaving, electricity price mechanism

LIAO Qiangqiang, LU Yudong, ZHOU Guoding, GE Honghua, ZHONG Junwei. Technical and Economic Analysis on NaS Battery Energy Storage System Based on Peak Shaving[J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(4): 111-115.

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