| HVDC地中直流对交流系统的影响及规律分析 |
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| 引用本文： | 曾嵘,张波,赵杰,蔡宗远,王琦,何金良,张铮.HVDC地中直流对交流系统的影响及规律分析[J].高电压技术,2009,35(3):678-682. |
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| 作者姓名： | 曾嵘 张波 赵杰 蔡宗远 王琦 何金良 张铮 |
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| 作者单位： | 曾嵘,张波,何金良,张铮,ZENG Rong,ZHANG Bo,HE Jin-liang,ZHANG Zheng(清华大学电机系电力系统国家重点实验室,北京,100084);赵杰,蔡宗远,王琦,ZHAO Jie,CAI Zong-yuan,WANG Qi(南方电网技术研究中心,广州,510620)
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| 摘 要： | 直流输电系统在系统调试或故障情况下会处于单极大地回路运行方式,这时地中直流会对交流系统的正常运行带来不利影响。为此全面总结了我国龙政、天广、三广直流输电线路在调试与运行过程中对附近交流电网运行带来的噪声、谐波、振动等不利影响;通过贵广调试现场实验及对实测数据的详细分析,归纳得到变压器中性点直流、谐波、噪声等与入地直流之间的关系规律;通过建立理论模型,对于地中直流的分布特性进行了分析,并以春城变电站为例就中性点直流电流进行了计算。计算结果验证了所提理论模型和计算方法的有效性。
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| 关 键 词： | 高压直流 直流接地极 中性点直流 大地回路 可听噪声 谐波电压 |
Influence and Characteristics Analysis of Effect of the HVDC Ground Return Current on AC System |
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| ZENG Rong,ZHANG Bo,ZHAO Jie,CAI Zong-yuan,WANG Qi,HE Jin-liang,ZHANG Zheng.Influence and Characteristics Analysis of Effect of the HVDC Ground Return Current on AC System[J].High Voltage Engineering,2009,35(3):678-682. |
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| Authors: | ZENG Rong ZHANG Bo ZHAO Jie CAI Zong-yuan WANG Qi HE Jin-liang ZHANG Zheng |
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| Affiliation: | 1. State Key Lab of Power Systems;Department of Electrical Engineering;Tsinghua University;Beijing 100084;China;2. Technology Research Center;China Southern Power Grid;Guangzhou 510620;China |
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| Abstract: | The HVDC transmission system may be operated in ground return mode when the system is in debug or failure. The disadvantages, such as audible noise, harmonic and oscillation of the transformer in AC systems, are illustrated by analyzing the data of LONG-ZHENG, TIAN-GUANG and SAN-GUANG HVDC system. And field experiments were implemented by measuring the neutral DC current of more than ten transformers when the GUI-GUANG HVDC system was in debugging. Some useful data were acquired and some interesting results... |
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| Keywords: | HVDC HVDC grounding system neutral current ground return audible noise harmonic voltage |
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