| 一种综合频率扫描和复转矩系数的次同步谐振风险定量评估方法 |
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| 引用本文： | 王忠军,王林川,谢小荣,杨煜,王燕廷.一种综合频率扫描和复转矩系数的次同步谐振风险定量评估方法[J].电网技术,2011(7):101-105. |
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| 作者姓名： | 王忠军 王林川 谢小荣 杨煜 王燕廷 |
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| 作者单位： | 东北电力大学电气工程学院;电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系);南方电网技术研究中心; |
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| 基金项目： | 国家自然科学基金项目(51077080); 国家电网公司科技项目(20092000857)~~ |
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| 摘 要： | 针对串补输电系统的次同步谐振风险,提出了一种综合频率扫描和复转矩系数的定量评估方法。它首先利用阻抗–频率扫描获得串补输电网的简化等值模型及其参数;然后根据复转矩系数法推导出机组各扭振模式的阻尼显式表达式,兼顾了轴系机械阻尼和电气阻尼。实例研究表明:该方法与特征根分析法的结果一致,但它的原理简洁直观、计算量小,且为机网参数的显式函数,能对多模式SSR提供直接、精确和定量的阻尼结果,可应用于工程上多串补、多个电压等级复杂电网的SSR风险评估。
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| 关 键 词： | 次同步谐振 频率扫描 复转矩系数 |
A Method Integrating Frequency Scanning and Complex Torque Coefficient to Quantitatively Evaluate Subsynchronous Resonance Risk |
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| WANG Zhongjun,WANG Linchuan,XIE Xiaorong,YANG Yu,WANG Yanting,Haidian District,Beijing ,.China Southern Power Grid Technology Research Center,Guangzhou ,Guangdong Province,China.A Method Integrating Frequency Scanning and Complex Torque Coefficient to Quantitatively Evaluate Subsynchronous Resonance Risk[J].Power System Technology,2011(7):101-105. |
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| Authors: | WANG Zhongjun WANG Linchuan XIE Xiaorong YANG Yu WANG Yanting Haidian District Beijing China Southern Power Grid Technology Research Center Guangzhou Guangdong Province China |
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| Affiliation: | WANG Zhongjun1,WANG Linchuan1,XIE Xiaorong2,YANG Yu3,WANG Yanting1(1.School of Electrical Engineering,Northeast Dianli University,Jilin 132012,Jilin Province,China,2.State Key Lab of Control and Simulation of Power Systems and Generation Equipments(Dept.of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,3.China Southern Power Grid Technology Research Center,Guangzhou 510623,Guangdong Province,China) |
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| Abstract: | In allusion to subsynchronous resonance(SSR) risk of power transmission system with series compensator,a quantitative evaluation method in which the frequency scanning and complex torque coefficient are integrated is proposed.Firstly,in the proposed method the impedance-frequency scanning is utilized to obtain the simplified equivalent model of power transmission system with series compensator and its parameters;then based on complex torque coefficient the explicit expressions of damping under various torsi... |
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| Keywords: | subsynchronous resonance(SSR) frequency scanning complex torque coefficient |
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