| 一种分析变电站站用变压器中性点漂移位置分布的矢量图分析法 |
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| 引用本文： | 葛宁,伍亚萍.一种分析变电站站用变压器中性点漂移位置分布的矢量图分析法[J].电力设备,2007,8(5):67-69. |
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| 作者姓名： | 葛宁 伍亚萍 |
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| 作者单位： | 北京电力变电公司,北京,100031 |
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| 摘 要： | 分析一220kV变电站站用变压器负荷电压不平衡的原因,说明了三相四线制中的零线接线准确与否对负荷三相电压平衡性的重要影响,并提出了一种简单、直观的实用矢量图分析方法。应用该方法可以很容易地判断负荷电压与系统中性点漂移位置的关系,即中性点漂移位置的分布情况。该方法运用于电源侧电压对称和不对称情况下的中性点漂移位置的定性分析。如果要准确判断中性点位置,则需借助于解析方法。
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| 关 键 词： | 变电站 站用变压器 电压不平衡 中性点漂移 |
| 收稿时间： | 2006-12-14 |
| 修稿时间： | 2006年12月14 |
Vector Analysis Method of Neutral Drift Position Distribution for Station Transformer in Substation |
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| GE Ning,WU Ya-ping.Vector Analysis Method of Neutral Drift Position Distribution for Station Transformer in Substation[J].Electrical Equipment,2007,8(5):67-69. |
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| Authors: | GE Ning WU Ya-ping |
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| Abstract: | The reason of unbalanced load voltage for station transformer in 220 kV substation was analyzed,the important influence of null line wirings in three-phase four-wire system on three-phase load voltage balancing was explained,and put forward a kind of simple,visual and practical vector analysis method.This method can judge the relation of load voltage and system neutral drift location easily,which utilizes the qualitative analysis of the neutral drift location under symmetrical and asymmetrical condition of the power source voltage side.If accurate judgement for neutral drift location is needed,it is necessary to adopt the analysis method. |
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| Keywords: | substation station transformer unbalanced voltage neutral drift |
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