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同塔双回线路导线相序排列影响因素研究

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随着负荷的快速增长,电网中出现大量的短距离不换位架设的同塔双回输电线路,由导线相序排列引起系统三相电流不平衡问题日益突出.本文利用PSCAD电磁暂态程序对500 kV同塔双回输电线路不同相序排列情况下对不平衡电流、继电保护以及反击耐雷电流进行了研究;在此基础上提出一种基于不平衡电流、继电保护和反击耐雷水平的同塔双回输电线路导线相序排列的选择方法.
Research on the Influences of Different Phase Sequence Arrangement of Common-tower Double-circuit Transmission Lines
With the rapid growth of power load,large amount of short-distance untransposed common-tower double-circuit transmission lines are put into operation,thus,unbalanced three-phase current caused by phase sequence arrangement is increasingly serious.In view of the problem,PSCAD electromagnetic transient program is applied in the research of unbalanced current,relay protection and thunder-resisting current under different phase sequence arrangement,based on which,selection method for phase sequence arrangement of 500 kV common-tower double-circuit transmission lines is proposed.

common-tower double-circuitphase sequence arrangementunbalanced currentrelay protectionthunder-resisting performance

张悦、唐震、杨林也、吴明锋、白瑞

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国网山西电力科学研究院,太原030001

同塔双回输电线路 相序排列 不平衡电流 继电保护 反击耐雷水平

2014

华东电力
华东电力试验研究院有限公司

华东电力

CSTPCD
影响因子：0.551
ISSN：1001-9529
年,卷(期)：2014.42(10)
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