| 引用本文: | 李 辉,陈耀君,赵 斌,刘盛权,杨 东,杨 超,胡姚刚,梁媛媛.双馈风电场阻尼系统次同步振荡的无功功率控制策略[J].电力自动化设备,2014,34(12): |
| LI Hui,CHEN Yaojun,ZHAO Bin,LIU Shengquan,YANG Dong,YANG Chao,HU Yaogang,LIANG Yuanyuan.Reactive power control of sub-synchronous oscillation damping system for DFIG-based wind farms[J].Electric Power Automation Equipment,2014,34(12): |
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| 摘要: |
| 引入无功-转速型传递函数，推导了双馈风电场无功功率对系统贡献的阻尼系数大小和性质的表达式，并基于分析获得的提供系统正阻尼条件，优化设计无功功率环附加阻尼控制策略抑制次同步振荡。以双馈风电场接入IEEE第一标准测试系统为例，基于DigSILENT／PowerFactory仿真平台对双馈风电场无功功率附加阻尼控制时的系统运行性能进行仿真比较。理论分析和时域仿真结果表明，推导的阻尼系数表达式以及得到的正阻尼范围条件可以有效分析双馈风电场无功功率对系统次同步振荡的作用，提出的风电场无功功率附加阻尼控制策略能在全次同步频段内提供最优正阻尼，且抑制效果优于有功功率附加PSS阻尼控制。 |
| 关键词: 风电场；无功功率；次同步振荡 传递函数 阻尼；附加阻尼控制；优化；双馈电机 |
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| 基金项目:国家自然科学基金资助项目（51377184）；国家国际科技合作专项资助项目（2013DFG61520）；中央高校基本科研业务费科研专项资金资助项目（CDJZR12150074）；重庆市集成示范计划项目（ＣＳＴＣ2013ＪＣＳＦ70003） |
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| Reactive power control of sub-synchronous oscillation damping system for DFIG-based wind farms |
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LI Hui1, CHEN Yaojun1, ZHAO Bin1, LIU Shengquan1, YANG Dong1, YANG Chao1, HU Yaogang1, LIANG Yuanyuan2
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1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology，Chongqing University，Chongqing 400044，China;2.Chongqing KK-QIANWEI Wind Power Equipment Co.，Ltd.，Chongqing 401121，China
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| Abstract: |
| The damping coefficient contributed to power system by the reactive power of DFIG-based wind farms is researched and the expression of its magnitude and property is derived based on the transfer functions between turbo-generator speed and reactive power outputs. Based on the obtained positive damping conditions，the strategy of the additional damping control in the reactive power loop is optimally designed for the suppression of SSO（Sub-Synchronous Oscillation）. As an example，the operating performance of a DFIG-based wind farms is simulated on DigSILENT／PowerFactory platform，which is connecting to IEEE first benchmark model and has additional damping control in its reactive power loop. Theoretical analysis and time-domain simulation results show that，the derived damping coefficient expression and the obtained positive damping conditions can be used to effectively analyze the influence of wind farms reactive power on system SSO；the proposed control strategy can provide optimal positive damping covering whole sub-synchronous frequency band；and the effect of additional reactive power damping control is better than that of additional active power damping control based on PSS（Ｐower System Stabilizer）. |
| Key words: wind farms reactive power sub-synchronous oscillation transfer functions damping additional damping control optimization DFIG |
