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特高压直流输电 |
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低频谐振 |
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并联滤波器 |
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串联滤波器 |
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谐波抑制 |
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郭贤珊 |
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Article by |
1. 国家电网公司 特高压建设部，北京市 西城区100031；
2. 国网直流工程建设有限公司，北京市 东城区 100005
仿真计算了向家坝—上海±800 kV特高压直流示范工程直流系统谐波阻抗特性，以及各种工况下系统中主要元件的电压和电流水平，指出该工程在50 Hz和100 Hz附近可能发生串联谐振。根据以往的直流工程经验和电工基本原理，提出在直流系统中配置并联滤波器或串联滤波器可有效抑制直流系统低频谐振，并对这2种方案的特点进行了分析比较，最终形成了抑制直流系统低频谐振的推荐方案。
2．State Grid DC Project Construction Company Limited，Dongcheng District，Beijing 100005，China
The harmonic impedance characteristic of DC system in ±800 kV UHVDC demonstration project from Xiangjiaba to Shanghai and the voltage and current levels of principle components in UHVDC system under various operation conditions are analyzed by EMTDC. It is pointed out that the series resonance may occur at the frequency near 50Hz and 100Hz. According to former engineering experiences in HVDC projects and based on basic principle of electrical engineering, it is proposed that the low frequency resonance in HVDC system can be effectively suppressed by configurating shunt filters or serial filters in HVDC system, and the features of the two methods are analyzed and compared, finally a recommended scheme for suppressing low frequency resonance in HVDC system is formed.
多个特高压直流系统送端共用接地极的内过电压研究
[J]. 电网技术, 2008,32(10): 5-10交流线路对平行架设特高压直流线路的影响及限制措施
[J]. 电网技术, 2008,32(11): 1-6