微電網聯網的購售電優(yōu)化策略
徐小明1,吳振鵬2
(1 貴州大學 電氣工程學院,貴州 貴陽 550025;2 國網衢州供電公司,浙江 衢州 324000)
摘 要:介紹了微電網并網的運營策略,提出了微電網并網運行模式下的經濟運行優(yōu)化模型。模型中考慮了微電網的運行成本、環(huán)境成本、停電補償成本以及與大電網之間的功率交換。通過粒子群算法,以典型日負荷曲線為例,得到了微電網并網運行時的各機組出力、微電網的售電收益、微電網的運行成本、峰值時的停電補償費用以及和大電網之間的交換功率。仿真結果表明,微電網代理商可以根據自身的情況,靈活調節(jié)各機組出力以及通過與大電網之間的功率交換來獲取最大的利益。
關鍵詞:微電網;并網;購售電;優(yōu)化策略
中圖分類號:TM727 文獻標識碼:A 文章編號:1007-3175(2016)09-0023-03
Optimal Strategy of Purchase and Sale of Micro
Grid Connected Operation
XU Xiao-ming1, WU Zhen-peng2
(1 Department of Electrical Engineering, Guizhou University, Guiyang 550025, China;
2 State Grid Quzhou Power Supply Company, Quzhou 324000, China)
Abstract: Introduction was made to the operation strategy of micro grid connected. This paper proposed the optimization model of economic operation in micro grid connected operation mode. The design of the model considered the micro grid operation cost, environmental cost, outage cost compensation and the power exchange with the large power grid. Using the particle swarm algorithm and taking the typical daily load curve for example, this paper obtained the output of each unit, the earnings of micro grid electricity sale, the operation cost of micro grid, the cost of the peak power outage compensation and the power exchange with the large power grid.The simulation results show that the micro grid agents,
according to their own situation, can flexibly adjust each unit output and obtain the maximum benefit through the power exchange with the large power grid.
Key words: micro grid; grid connected operation; purchase and sale of electricity; optimization strategy
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