基于電池儲能的并網變換器在風電系統中應用及其控制
王旻瑋1,魏大洋2,劉悅3
1 華中科技大學 電氣與電子工程學院,湖北 武漢 430074;
2 國網常州供電公司,江蘇 常州 213000;3 重慶大學 電氣工程學院,重慶 400044
摘 要:為解決風力發電直接并網會對電網產生很大沖擊的問題,提出了一種基于電池儲能的并網變換器,該并網變換器在風電系統應用中能平抑風電功率波動,在電網發生故障時提供無功功率,孤島運行狀態下向當地負荷提供不間斷供電,并在電網恢復正常運行后,實現從離網到并網的快速無沖擊切換。在MATLAB/SIMULINK中搭建了基于電池儲能的并網變換器模型,仿真結果驗證了分析的正確性。
關鍵詞:電池儲能;并網變換器;風電場;電壓源型變流器
中圖分類號:TM614 文獻標識碼:B 文章編號:1007-3175(2015)10-0029-05
Application and Control of Grid Converter Based on Battery Energy Storage in Wind Power System
WANG Min-wei1, WEI Da-yang2, LIU Yue3
1 School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2 State Grid Changzhou Power Supply Company, Changzhou 213000, China;
3 School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Abstract: In order to solve the problem that the direct output power of wind power system has great impacts on the power quality and stability of power grid. This paper proposed a grid converter based on battery energy storage. In wind power system the grid converter could smooth the wind power fluctuations, supply the reactive power for the grid when grid faults occurred, and achieve the uninterruptible power supply for local loads under the conditions of grid-isolated operation and the rapid switching from grid-isolated to grid-connected with no impact after the grid resumed normal operation. By using MATLAB/ SIMULINK, this paper established the model of battery energy storage grid-connected system. The simulation results verify the correctness of the analysis.
Key words: battery storage; grid converter; wind power plant; voltage source converter
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