同塔4回输电线路差异化防雷效果仿真分析

发布时间：2019-02-22 12:59

【摘要】：对各种防雷措施进行防雷效果评估对于开展同塔线路防雷工作具有指导意义。为此,采用EMTP-ATP软件,对典型220 kV、220/500 kV同塔4回线路采用差绝缘、加装线路避雷器、加装引弧角、降低接地电阻、加强线路绝缘等8种防雷措施的防雷效果进行了仿真分析。研究表明:各种防雷措施防雷效果程度不同,各有技术和经济的局限性,可能会对线路运行维护、工程投资、线路不平衡度、单回线路耐雷水平造成影响。因此建议区分新建、运行线路来开展防雷设计和改造,强调重视降阻、加强绝缘等基础防雷措施的作用,并指出选择防雷措施不仅要考虑其防雷效果,还要考虑其经济性和对运行维护的影响。
[Abstract]:The lightning protection effect evaluation of various lightning protection measures is of guiding significance for the lightning protection work of the same tower line. For this reason, EMTP-ATP software is used to reduce the grounding resistance by adopting differential insulation, adding line arrester, adding arc angle to the typical 220 kV,220/500 kV same tower 4 circuit line. The lightning protection effects of 8 kinds of lightning protection measures, such as strengthening line insulation, are simulated and analyzed. The results show that the lightning protection effect of various lightning protection measures is different, and each has technical and economic limitations, which may have an impact on line operation and maintenance, project investment, line imbalance, and lightning resistance level of single circuit line. Therefore, it is suggested to distinguish between newly built and operational lines to carry out lightning protection design and transformation, to emphasize the importance of reducing resistance and strengthening the role of basic lightning protection measures such as insulation, and to point out that the lightning protection measures should not only consider the lightning protection effect, Also consider its economy and the impact on operation and maintenance.
【作者单位】：广东电力科学研究院;清华大学电机工程与应用电子技术系;
【基金】：国家自然科学基金(50737001) 国家重点基础研究发展计划(973计划)(2009CB724504)~~
【分类号】：TM862

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