| 含双馈风电机的电力系统电压稳定性分岔分析 |
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| 引用本文： | 袁义桃,康积涛,吴小刚,李亚辉.含双馈风电机的电力系统电压稳定性分岔分析[J].电力技术,2014(3):42-47. |
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| 作者姓名： | 袁义桃 康积涛 吴小刚 李亚辉 |
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| 作者单位： | [1]西南交通大学电气工程学院,四川成都610031 [2]中铁第四勘察设计院,湖北武汉430063 |
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| 摘 要： | 风电并网改变系统潮流,为研究风电并网对电压稳定的影响,建立含双馈异步发电机组（DFIG）风电系统的动态模型,提出一种新的处理DFIG转子控制电压值的方法.该电压控制方法将DFIG稳态转子控制电压值作为动态DFIG模型的转子控制电压值,随着系统运行状态变化而改变控制电压值.应用延拓法追踪动态负荷参数变化时系统的平衡解流形,并采用分岔理论分析动态负荷参数变化对风电系统电压稳定的影响.仿真结果表明,不同的风力机模型会使电压稳定性分析结果产生差异,且上述新的DFIG转子控制电压方法更加精确、可行.
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| 关 键 词： | 双馈异步发电机 风电系统 分岔理论 动态电压稳定 延拓法 |
Bifurcation Analysis on Voltage Stability of Power Systems with Doubly Fed Induction Generators |
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| Authors: | YUAN Yi-tao KANG Ji-tao WU Xiao-gang LI Ya-hui |
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| Affiliation: | 1.School of Electric Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2.China Railway Fourth Survey and Design Institute, Wuhan 430063, China;) |
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| Abstract: | The power flow of the grid will be changed by the wind power integration.For studying the impact of wind power integration on voltage stability,a dynamic model is built for wind power system with doubly fed iduction generator （DFIG）,and a new approach is proposed to deal with the rotor control voltage of DFIG,in which DFIG＇ s steady state rotor control voltage is used as rotor control voltage and this value is changed with the change of state of system.The equilibrium solution manifold of power system is tracked under variable load parameters,and the influence of load parameters on wind power system is analysed based on bifurcation theory.The simulation showed that the analytical result of voltage stability differs with different wind turbine models,and the proposed new approach is more accurate and feasible. |
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| Keywords: | doubly fed induction generator （DFIG） wind power system bifurcation theory dynamic voltage stability continuation method |
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