Operation Control and Economic Dispatch of Energy Storage System for Micro-Grid

doi:10.11930/j.issn.1004-9649.2013.1.11.4

Abstract

Abstract: Energy Storage Systems(ESSs) have critical impacts on the reliability and economy of micro-grid operation. In this paper, the control strategies of ESSs for a micro-grid in both grid-connected and islanded modes are analyzed. In order to solve the severe stability issues caused by high R/X ratio of line impedance in traditional voltage and frequency droop controls, an improved droop control strategy is designed that can enhance micro-grid transient performance by mitigating power fluctuation. A mathematical model of economic dispatch of ESSs is established under the time-of-use pricing, with which peak load shaving can be achieved. The proposed strategies in control and dispatch are verified through a study case.

Key words: micro-grid, energy storage system, droop control, economic dispatch, time-of-use price

CLC Number:

TM727

GAO Wen-jie, JING Tian-jun, YANG Ming-hao, SHEN Dong. Operation Control and Economic Dispatch of Energy Storage System for Micro-Grid[J]. Electric Power, 2013, 46(1): 11-15.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.1.11.4

https://www.electricpower.com.cn/EN/Y2013/V46/I1/11

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