| 引用本文: | 金贵阳,杨克己,戴永军,马尚行.智能配电变压器的串变调压和基于漏磁的绝缘故障检测技术[J].电力系统保护与控制,2017,45(5):103-108.[点击复制] |
| JIN Guiyang,YANG Keji,DAI Yongjun,MA Shangxing.Voltage regulation and insulation fault detection technology of intelligent distribution transformer[J].Power System Protection and Control,2017,45(5):103-108[点击复制] |
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| 摘要: |
| 为了解决分布式能源接入配电网后电压的频繁波动和双向潮流问题，提出一种基于串联变压器的调压技术。利用真空接触器和晶闸管来控制串联变压器的变比和星-角变换，实现电压的快速调整。分析了基于串联变压器的调压原理及基于真空接触器和晶闸管的混合开关调压技术。此外，还提出了基于漏磁通的绕组绝缘故障监测技术，说明它的原理、实现技术和实验验证原理。分析结果表明，提出的技术能够有效地解决配电网电压频繁波动的问题，提高配电变压器的寿命、降低配电变压器的损耗，同时提高配电变压器的智能化程度和可靠性。 |
| 关键词: 智能配电变压器 串联调压 混合开关调压 漏磁通 绕组绝缘故障检测 |
| DOI：10.7667/PSPC201643 |
| 投稿时间：2016-07-15修订日期：2017-01-10 |
| 基金项目:国家高技术研究发展计划(2014AA052005) |
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| Voltage regulation and insulation fault detection technology of intelligent distribution transformer |
| JIN Guiyang,YANG Keji,DAI Yongjun,MA Shangxing |
| (Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China;College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China;Zhejiang JEC New Energy Technology Co., Ltd., Jiaxing 314000, China) |
| Abstract: |
| In order to solve the problem of voltage fluctuation and bidirectional power flow due to distributed power generation systems connected to distribution network, a new voltage regulation technology based on series transformer is proposed. By using vacuum contactor and thyristor to control the series transformer tap and star-triangle transformation, the voltage can be regulated quickly and effectively. The voltage regulation principle based on series transformer and the voltage regulation technology based on vacuum contactor and thyristor are analyzed. A winding insulation fault detection technology based on leakage flux is also presented, and its principle, the concrete realization method and experiment verification principle are described too. The analysis shows that the proposed technology can effectively solve the distribution network voltage fluctuation, improve the lifetime of distribution transformer, reduce the loss of distribution transformer, and at the same time, improve the intelligence and reliability of distribution transformer. This work is supported by National High-tech R & D Program of China (863 Program) (No. 2014AA052005). |
| Key words: intelligent distribution transformer voltage regulation based on series transformer hybrid switch voltage regulation leakage flux winding insulation fault detection |
