Design and Research of new Tangent Tower for Transmission Line with 500 kV/220 kV Four Circuits in the Same Tower

doi:10.11930/j.issn.10.11930.2015.8.73

Abstract

Abstract: Traditional design of tangent towers for transmission line with 500/220 kV four circuits in the same tower has conflict between line corridor and tower material indices. Based on the technical-economy comparison, a new type of tangent tower, namely Cross-body Tower, is proposed. In proposed design, two phase conductors for 220 kV cross through tower body, which eliminate the effect of 220 kV line on the width of the corridor. The total number of cross-arms is still 5. The electrical performance, electromagnetic enviornments, linear and non-linear of structure and modal of proposed design are analzed in detail. The results show that new design complies with specification requirement and has rational structure and satisfactory dynamic performance. The technical and economic comparison results also indicate that proposed design has many advantages compare to classic design, especially in economically developed region with restricted transmission line corridor.

Key words: ransmission lines with four circuits in the same tower, cross-body tangent tower, electrical properties, finite element analysis

CLC Number:

TM722

XIE Fang, FENG Bing, GUO Yong, YE Yin. Design and Research of new Tangent Tower for Transmission Line with 500 kV/220 kV Four Circuits in the Same Tower[J]. journal1, 2015, 48(8): 73-79.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.8.73

https://www.electricpower.com.cn/EN/Y2015/V48/I8/73

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