Real-Time Economic Optimization Method for Microgrid Considering Energy Storage Charge and Discharge Benefits

doi:10.11930/j.issn.1004-9649.201903073

Abstract

Abstract: Aiming at the economic dispatching problem of island, this peper proposed an optimal scheduling model considering the enery storage charge and discharge eddiciency, which fully considers the cost of energy acquisition in the past period and the operation benefit in the future period, so as to determine the mode of energy storage unit participating in the economic optimization of microgrid in the current period. On this basis, each agent in the microgrid can maximize its own operating efficiency through exchanging expected transaction power and electricity price with its neighboring agents. In this model, the alternating direction multiplier method is used to solve the optimal transaction volume and price between agents. Finally, under three different weather scenarios, the operation results of distributed economic optimal dispatch of islanded microgrid are analyzed, and the validity of the proposed model and solution method is verified.

Key words: island microgrid, economic optimization, energy storage, charge and discharge benefits, alternating direction multiplier method, the distributed optimization

CLC Number:

TM73

LING Chanhui, ZHENG Changbao, HU Cungang, RUI Tao. Real-Time Economic Optimization Method for Microgrid Considering Energy Storage Charge and Discharge Benefits[J]. Electric Power, 2019, 52(6): 111-120.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201903073

https://www.electricpower.com.cn/EN/Y2019/V52/I6/111

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