| 谐波影响下的高压直流输电系统运行特性分析 |
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| 作者姓名： | Guo Ziyu Lin Tao Jia Gengtao Wang Liyong |
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| 作者单位： | 1.武汉大学电气工程学院太阳能高效利用湖北省协同创新中心 武汉 430072 |
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| 基金项目： | the National Natural Science Foundation of China51177111 |
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| 摘 要： | 随着多馈入直流工程的不断发展，换流站发生谐波扰动的概率大大增加.通过分析换流母线谐波对锁相环和换相过程的影响，研究了高压直流输电系统的控制器在谐波扰动下的运行特性.通过减少电流偏差控制器的输出量以减少定熄弧角控制器在谐波扰动中的稳态误差，提高了直流系统传输容量.最后提出了谐波扰动中系统运行点的计算方法.PSCAD软件的仿真结果证明了分析和计算方法的准确性.
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| 关 键 词： | 高压直流输电 换流器 谐波 谐波扰动 锁相环 定熄弧角控制器 |
| 收稿时间： | 2016-01-25 |
Influence of Converter Bus Serious Harmonic Distortion on HVDC Transmission System |
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| Guo Ziyu,Lin Tao,Jia Gengtao,Wang Liyong.Influence of Converter Bus Serious Harmonic Distortion on HVDC Transmission System[J].Acta Automatica Sinica,2017,43(8):1412-1417. |
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| Affiliation: | 1.Solar Energy Efficient Use Collaborative Innovation Center, School of Electrical Engineering, Wuhan University, Wuhan 430072, China2.State Grid Shanghai Information and Telecommunication Company, Shanghai 200010, China3.State Grid Beijing Electric Power Company, Beijing 100031, China |
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| Abstract: | Possibility of serious harmonic distortion (SHD) increases as multi-infeed direct current (MIDC) transmission develops rapidly in recent years. In this paper, the mechanism of high voltage direct current (HVDC) controller working against SHD is proposed for theoretical derivation of phase locked loop (PLL) output and valve commutation process. To reduce static error of constant extinction angle (CEA) controller and enhance active power transmission, the insertion of current error (CE) controller into CEA is minified. A calculation of inverter operating point is proposed in the end. The correctness of mechanism and algorithm is verified through power systems computer aided design (PSCAD) simulation. |
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