| 基于分段阻抗匹配的风电场集电线路单相接地故障测距方法 |
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| 引用本文： | 翟羽佳,张 凯,朱永利,邓 冉,刘雪纯.基于分段阻抗匹配的风电场集电线路单相接地故障测距方法[J].陕西电力,2020,0(12):26-32. |
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| 作者姓名： | 翟羽佳 张 凯 朱永利 邓 冉 刘雪纯 |
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| 作者单位： | 1. 华北电力大学（新能源电力系统国家重点实验室），河北 保定 071003；2. 内蒙古华电玫瑰营风力发电有限公司，内蒙古自治区 呼和浩特 012000 |
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| 摘 要： | 为解决风电场因集电线路单相接地短路故障引起的弃风窝电问题，提出了基于分段阻抗匹配的风电场集电线路单相接地短路故障测距方法。通过搭建单一区间的测距模型和风机支路等效注入电流模型，构建了从首段向故障点所在区段分段阻抗匹配的测距算法，通过判断计算结果是否处于当前区间来判别是否得到最终结果或需要继续向后续区间递推运算。PSCAD/EMTDC仿真验证了所提方法的可行性。
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| 关 键 词： | 风电场 集电线路 单相接地故障 故障测距 分段阻抗匹配 风机支路等效注入电流 |
Single-line-to-ground Fault Location Method for Wind Farm Collection Line Based on Segmented Impedance Matching |
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| ZHAI Yujia,ZHANG Kai,ZHU Yongli,DENG Ran,LIU Xuechun.Single-line-to-ground Fault Location Method for Wind Farm Collection Line Based on Segmented Impedance Matching[J].Shanxi Electric Power,2020,0(12):26-32. |
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| Authors: | ZHAI Yujia ZHANG Kai ZHU Yongli DENG Ran LIU Xuechun |
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| Affiliation: | 1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources，North China Electric Power University，Baoding 071003，China； 2.Inner Mongolia Huadian Meiguiying Wind Power Co.，Ltd.， Hohhot 012000，China |
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| Abstract: | In order to solve the problem of wind power curtailment caused by single-phase grounding short-circuit fault on wind farm collection line， this paper proposes a method for locating the fault on the collection line based on segmented impedance matching. By establishing a ranging model for single interval and an equivalent current injection model for the wind generators on different branches， a ranging algorithm of segmented impedance matching is constructed from the first section to the fault section. If the calculated result is in the current interval， the final result is determined. Otherwise， it is necessary to continue the recursion operation to the subsequent interval. PSCAD/EMTDC simulation verifies the feasibility of the proposed method. |
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| Keywords: | wind farm collection line single-phase grounding fault fault location segmented impedance matching equivalent current injection model for wind generators on different branches |
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