Economic Operation of Micro-grid Based on Sequence Operation
Liu Fang1, Yang Xiu1, Shi Shanshan2, Huang Haitao1, Wang Haibo3, Li Cheng4
1. Shanghai University of Electric Power Shanghai 200090 China; 2. Electric Power Research Institute of SG Shanghai Electric Power Company Shanghai 200437 China; 3. State Grid Zhejiang Electric Power Company Jiaxing Power Supply Company Jiaxing 314100 China; 4. State Grid Zhejiang Changxing County Power Supply Company Changxing 313100 China
Abstract：For the uncertainty of wind turbine, photovoltaic and the load in micro-grid operation, the economic operation model based on chance constrained programming is proposed, with a certain confidence level to meet the backup as probabilistic constraint of reliability. Sequence operation is applied to turn all random variables into one probabilistic sequence, through addition-type-convolution (ATC) and subtraction-type-convolution (STC), so that the probability satisfying the constraints can be calculated directly. The representation is visual and calculating time saving, avoiding the inconsistent results of each calculation using the common analog methods. To reduce the operating costs of micro-grid, the charge-discharge cost is introduced as the energy storage judging indicator to suggest whether charging is profit, so that guide the energy storage system charging during low price period and discharging during the peak price period. The Genetic algorithm combined with sequence operation is applied to optimize the active power and reactive power of micro-source, and to determine the interactive power of interconnection line, thus the best operation mode is formed.
刘方,杨秀,时珊珊,黄海涛,王海波,李成. 基于序列运算的微网经济优化调度[J]. 电工技术学报, 2015, 30(20): 227-237.
Liu Fang, Yang Xiu, Shi Shanshan, Huang Haitao, Wang Haibo, Li Cheng. Economic Operation of Micro-grid Based on Sequence Operation. Transactions of China Electrotechnical Society, 2015, 30(20): 227-237.
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2015, Vol. 30 
