| 直流融冰装置线路开路试验中电压阶跃现象分析 |
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| 引用本文： | 刘彬,许训炜,张翔,刘海彬,沈刚.直流融冰装置线路开路试验中电压阶跃现象分析[J].南方电网技术,2012,6(4):68-71. |
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| 作者姓名： | 刘彬 许训炜 张翔 刘海彬 沈刚 |
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| 作者单位： | 1. 南方电网超高压输电公司 柳州局,广西 柳州545006
2. 南京南瑞继保电气有限公司,南京211100 |
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| 摘 要： | 在直流融冰装置OLT试验时出现了直流电压阶跃现象。基于直流融冰装置OLT控制与保护基本原理，以6脉动和12脉动直流融冰装置为例，对此现象进行分析，发现在如下两种情况下会使直流电压产生阶跃：一是在6脉动直流融冰装置交流进线相序接错的情况下；二是在12脉动直流融冰装置的D桥和Y桥触发脉冲电缆互相接反的情况下；从而根据这种直流电压阶跃现象可以定位这些故障。
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| 关 键 词： | 直流融冰装置 线路开路试验 控制保护原理 故障分析 |
Analysis on the DC Voltage Stepping Phenomenon in Open Line Tests of DC De-icers |
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| LIU Bin,XU Xunwei,ZHANG Xiang,LIU Haibin and SHEN Gang.Analysis on the DC Voltage Stepping Phenomenon in Open Line Tests of DC De-icers[J].Southern Power System Technology,2012,6(4):68-71. |
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| Authors: | LIU Bin XU Xunwei ZHANG Xiang LIU Haibin and SHEN Gang |
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| Affiliation: | Liuzhou Bureau, CSG EHV Transmission Company, Liuzhou, Guangxi 545005, China;Nanjing NARI-Relays Electric Co. Ltd., Nanjing 211100, China;Nanjing NARI-Relays Electric Co. Ltd., Nanjing 211100, China;Nanjing NARI-Relays Electric Co. Ltd., Nanjing 211100, China;Nanjing NARI-Relays Electric Co. Ltd., Nanjing 211100, China |
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| Abstract: | There were DC voltage stepping phenomenons in open line tests of DC de-icers. Based on the fundamental principle of OLT control and protection, and taking the 6-pulse DC de-icer and 12-pulse DC de-icer as examples, this paper analyzes the phenomenon and concludes it is due to two cases where the AC feed lines of 6-pulse DC de-icer connected with wrong phase order or where the control fire cables of the bridge D and bridge Y of 12-pulse DC de-icer connecting in reverse way, and thus these faults can be located according to the DC voltage stepping phenomenon. |
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| Keywords: | DC de-icer open line test (OLT) control and protection principle fault analysis |
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