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海南35kV乌阳线防雷性能分析

DOI: 10.16188/j.isa.1003-8337.2015.02.009, PP. 44-49

Keywords: kV线路防雷,耐雷水平,ATP-EMTP,防雷改造措施

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Abstract:

海南省某供电公司所辖35kV乌阳线路由于地处山区,雷击跳闸事故时有发生。针对此问题,利用电磁暂态仿真软件(ATP-EMTP),搭建35kV乌阳线输电线路模型,分析其在感应雷、雷击导线和雷击杆塔下的线路耐雷水平,提出针对该线路的综合防雷措施,并分析不同改造措施下线路耐雷水平的变化。结果表明:改造后的耐雷水平得到明显提高,采用降阻措施对线路反击耐雷水平的提高不十分明显,加装线路避雷器的防雷效果尤为突出,能大幅提高雷击导线和反击的耐雷水平。通过以上改造,可以满足35kV乌阳线路的防雷要求,使线路耐雷水平在16kA之上。

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