并网换流器系统谐振的分析、检测与消除
发布时间:2019-02-12 19:13
【摘要】:以风能和光伏为代表的可再生能源发电中广泛应用的并网换流器会引发谐振,威胁系统的安全稳定运行。该文结合国内外研究现状,回顾了并网换流器系统中谐振分析、检测与消除的研究成果。首先介绍了并网换流器系统的结构和控制方法,在此基础上总结并网换流器系统的建模与稳定性分析方法,重点对比了基于状态空间方程和基于阻抗分析两种方法。其次,利用基于阻抗分析的方法分析了并网换流器系统的谐振产生机理,并介绍了目前存在的几种谐振检测方法,指出每种方法的优点和缺点;最后,对并网换流器系统中谐振的消除方法进行了分类和对比,分析了新型有源阻尼装置的原理与优点。
[Abstract]:Grid-connected converters, which are widely used in renewable energy generation, such as wind and photovoltaic, will cause resonance and threaten the safe and stable operation of the system. In this paper, the research results of resonance analysis, detection and elimination in grid-connected converter system are reviewed. Firstly, the structure and control method of grid-connected converter system are introduced, and then the modeling and stability analysis methods of grid-connected converter system are summarized, and the two methods based on state space equation and impedance analysis are compared. Secondly, the resonance generation mechanism of grid-connected converter system is analyzed based on impedance analysis, and several existing resonant detection methods are introduced, and the advantages and disadvantages of each method are pointed out. Finally, the methods of eliminating resonance in grid-connected converter system are classified and compared, and the principle and advantages of the new active damping device are analyzed.
【作者单位】: 哈尔滨工业大学电气工程及自动化学院;奥尔堡大学能源技术系;
【基金】:国家自然科学基金重点资助项目(51237002);国家自然科学基金项目(51407043) 台达环境和教育基金(DREG2014015)~~
【分类号】:TM46
[Abstract]:Grid-connected converters, which are widely used in renewable energy generation, such as wind and photovoltaic, will cause resonance and threaten the safe and stable operation of the system. In this paper, the research results of resonance analysis, detection and elimination in grid-connected converter system are reviewed. Firstly, the structure and control method of grid-connected converter system are introduced, and then the modeling and stability analysis methods of grid-connected converter system are summarized, and the two methods based on state space equation and impedance analysis are compared. Secondly, the resonance generation mechanism of grid-connected converter system is analyzed based on impedance analysis, and several existing resonant detection methods are introduced, and the advantages and disadvantages of each method are pointed out. Finally, the methods of eliminating resonance in grid-connected converter system are classified and compared, and the principle and advantages of the new active damping device are analyzed.
【作者单位】: 哈尔滨工业大学电气工程及自动化学院;奥尔堡大学能源技术系;
【基金】:国家自然科学基金重点资助项目(51237002);国家自然科学基金项目(51407043) 台达环境和教育基金(DREG2014015)~~
【分类号】:TM46
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