• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2015, Vol. 36 ›› Issue (5): 37-44.doi: 10.3969/j.issn.1000-7229.2015.05.007

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Influence of Transposing Form on Induced Voltage and  Current in 1 000 kV Double-Circuit Transmission Lines

WANG Xiaotong, BAN Liangeng, XIANG Zutao, HAN Yanan   

  1. China Electric Power Research Institute, Beijing 100192, China
  • Online:2015-05-01

Abstract:

The problems such as induced voltage and so on in 1 000 kV double-circuit transmission lines on the same tower were calculated and analyzed under different transposing forms. From the viewpoint of restricting induced voltage, secondary arc current and unbalanced degree of line parameters, 4 segment transposition is better than 3 segment transposition, but 1 more transposition tower is needed; while 5 segment type B transposition is better than 6 segment type A transposition and 1 transposition tower is saved. The effects of 4 segment transposition and 6 segment type A transposition are similar. Therefore, three kinds of transposing forms should be emphatically considered for double-circuit transmission lines on the same tower: 3 segment transposition (l/3, l/3, l/3)), 4 segment transposition (l/6, l/3,  l/3, l/6) and 5 segment type B transposition (l/6, l/6, l/3, l/6, l/6). It is not recommended to use more than 2 complete cycle transpositions in general.

Key words: 1 000 kV, double-circuit transmission lines on the same tower, transposing form, induced voltage, unbalanced degree, secondary arc current

CLC Number: