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电网技术  2006 

±500kV直流输电工程同杆并架技术的综合研究

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Keywords: 直流输电,同杆并架技术,杆塔参数,雷电特性,电磁环境

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Abstract:

同杆并架输电技术用于长距离高压直流输电工程在国内外尚无先例,在葛南直流综合改造工程中,如应用同杆并架技术将原葛南1回1200MW直流系统改造成2回3000MW直流系统,其输电能力将达到现有直流输电系统的5倍,但也会遇到各种新的技术问题。从直流线路杆塔参数的选择、雷电特性、电磁环境及同杆并架直流系统间的相互影响、可靠性等方面对该方案进行了深入的分析。分析结果已被应用于研究葛南直流增容工程的可行性。

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