| 工频通信信号在我国配电网中的传输特性 |
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| 引用本文： | 权楠,李建岐,冯侃,陈希.工频通信信号在我国配电网中的传输特性[J].电网技术,2009(17). |
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| 作者姓名： | 权楠 李建岐 冯侃 陈希 |
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| 作者单位： | 中国电力科学研究院;平凉供电公司; |
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| 摘 要： | 针对我国配电网与美国配电网接地方式的不同,分析了配电变压器对工频信号传输过程的影响,指出我国中压配电网中性点不接地方式对工频通信信号有明显的衰减作用,并与配电变压器的连接组别相关。最后对不同的信号衰减情况提出了改进通信效果的建议,包括增大信号调制幅度,改进信号检测技术,对Yyn-0型配电变压器通过减少装置内部电感来解决上行信号调制幅度不足的问题等。
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| 关 键 词： | 工频通信 配电网 配电变压器 |
Transfer Characteristics of Power Frequency Communication Signals in Medium-Voltage Power Distribution Networks in China |
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| QUAN Nan,LI Jian-qi,FENG Kan,CHEN Xi.Transfer Characteristics of Power Frequency Communication Signals in Medium-Voltage Power Distribution Networks in China[J].Power System Technology,2009(17). |
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| Authors: | QUAN Nan LI Jian-qi FENG Kan CHEN Xi |
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| Affiliation: | QUAN Nan1,LI Jian-qi1,FENG Kan2,CHEN Xi1 (1.China Electric Power Research Institute,Haidian District,Beijing 100192,China,2.Pingliang Power Supply Company,Pingliang 744000,Gansu Province,China) |
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| Abstract: | According to the differences between grounding modes of distribution networks in China and USA,the impacts of neutral grounding scheme for distribution transformers on power frequency signal transmission are analyzed and it is pointed out that the power frequency communication signals are evidently attenuated in neutral ungrounded medium-voltage distribution networks in China and the attenuation is related to the connection group scheme of distribution transformers. Some suggestions on improving communicati... |
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| Keywords: | power frequency communication system (PFCS) distribution network distribution transformer |
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