| 引用本文: | 杨 毅,姚 伟,孙海顺,文劲宇,袁宇波.考虑晶闸管导通特性的TCSC基频阻抗特性分析[J].电力自动化设备,2015,35(12): |
| YANG Yi,YAO Wei,SUN Haishun,WEN Jinyu,YUAN Yubo.Analysis of TCSC fundamental-frequency impedance characteristic considering thyristor conduction property[J].Electric Power Automation Equipment,2015,35(12): |
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| 摘要: |
| 通过PSCAD／EMTDC电磁暂态仿真发现在线路电流同步方式下，可控串联电容补偿（TCSC）基频阻抗特性曲线随着线路电流不同而改变，这将使TCSC分层式控制系统中的开环阻抗控制存在明显误差。建立了线路电流同步方式下考虑晶闸管导通特性影响时的TCSC基频阻抗模型，从理论上解释了基频阻抗特性随线路电流变化的机理，通过数字仿真分析指出最小二乘查表法存在TCSC开环阻抗控制查表误差大的问题，同时提出了二元三点插值查表法和线性插值查表法2种新的查表法，并通过动态模拟实验验证了这2种查表方法的有效性和可行性。 |
| 关键词: 可控串联电容补偿 基频阻抗特性 晶闸管导通特性 查表法 |
| DOI： |
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| 基金项目:江苏省自然科学基金资助项目（BK20140114） |
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| Analysis of TCSC fundamental-frequency impedance characteristic considering thyristor conduction property |
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YANG Yi1, YAO Wei2, SUN Haishun2, WEN Jinyu2, YUAN Yubo1
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1.State Grid Jiangsu Electric Power Company Research Institute，Nanjing 211103，China;2.State Key Laboratory of Advanced Electromagnetic Engineering and Technology，School of Electrical and Electronic Engineering，Huazhong University of Science and Technology，Wuhan 430074，China
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| Abstract: |
| The PSCAD／EMTDC digital electromagnetic transient simulation shows that，the fundamental frequency impedance characteristic curve of TCSC（Thyristor Controlled Series Capacitor） varies along with the line current in line current synchronization mode，which induces obvious deviation of open-loop impedance control in the hierarchical TCSC control system. A TCSC fundamental-frequency impedance model considering the variation of thyristor conduction characteristic in line current synchronization mode is built to theoretically analyze its mechanism and the digital simulation shows the LSM（Least Square Method） applied in the open-loop impedance control has large table look-up error. Two table look-up approaches，i.e. three-point quadratic interpolation method and linear interpolation method，are proposed and their effectiveness and reliability are validated by dynamic simulative experiments. |
| Key words: TCSC fundamental-frequency impedance characteristic thyristor conduction property table look-up method |
