微型水力异步发电机组系统的建模和仿真.pdfVIP

2012 年 第 6 卷 第 2 期 南 方 电 网 技 术 研究与分析 2012 ，Vol. 6 ，No. 2 SOUTHERN POWER SYSTEM TECHNOLOGY Study Analysis 文章编号：1674-0629 (2012)02-0075-05 中图分类号：TM714.3 文献标志码：A 微型水力异步发电机组系统的建模和仿真 殷桂梁，张圣明 （燕山大学电气工程学院，河北 秦皇岛 066004 ） 摘要：微型水力发电作为一种具有良好经济性、无污染、安装使用便捷的小型可再生能源项目而受到关注。建立了微型 水力发电机组系统的完整模型，包括其弹性引水系统模型、水轮机调节系统模型和异步发电机等效模型，通过 MATLAB/Simulink 仿真软件研究机组在增、减负载以及发生故障时的特性。结果表明：微型水力异步发电机组系统在 负载发生变化时，可以根据负载的变化调整异步发电机的输出功率，且系统的频率和电压幅值波动很小；在系统发生短 路故障时，切除故障后系统能快速实现稳定。 关键词：水轮机；数学建模；异步发电机；MATLAB/Simulink 仿真 Modeling and Simulation of the Micro-hydropower Asynchronous Generator System YIN Guiliang, ZHANG Shengming (College of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China) Abstract: Micro-hydropower as a small-scale renewable energy project receives widespread attention for the characteristics of good economy, pollution-free, convenient installation and use. In this paper a complete model of micro-hydropower unit system, including the flexibility diversion system, hydraulic turbine governing system and the induction generator equivalent model, by using MATLAB/Simulink simulation software researches the system characteristics when increase or decrease load and failure occurred. Research results indicated that: micro-hydropower asynchronous generator system can adjust the induction generator output power as load changes and the system frequency and voltage amplitude fluctuations are small; when short-circuit fault occurs, the system can quickly achieve stability after fault removed. Key words: hydraulic turbine; mathematical modeling; asynchronous generator; MATLAB/Simulink