110kV线路雷击闪络限制器安装方式对玻璃绝缘子电场分布的影响
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TM852

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国家自然科学基金(51577106)


Influence of flashover limiter’s installation position on electric field distribution of 110 kV glass insulator
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    摘要:

    110 kV线路雷击闪络限制器有2种典型安装方式:下放电电极位置低于圴压环和高于均压环,根据雷击闪络限制器的2种安装方式,建立110 kV同塔双回输电线路有限元计算模型,研究雷击闪络限制器的2种安装方式对玻璃绝缘子串和均压环电场分布的影响。结果表明,下放电电极低于均压环的安装方式降低了沿玻璃绝缘子串的电压及电场强度分布的均匀性,而下放电电极高于均压环的安装方式提高了沿玻璃绝缘子串的电压及电场强度分布的均匀性;雷击闪络限制器的2种安装方式均使均压环表面的电场强度有所减小。建议在玻璃绝缘子安装雷击闪络限制器时,使雷击闪络限制器下放电电极的位置高于圴压环。

    Abstract:

    110 kV flashover limiter has two kinds of installation method depending on the lower discharge electrode installed lower or higher than grading ring. In this paper, a finite element model is established for a 110 kV doublecircuit transmission line and the influence of installation type for the electric field distribution of glass insulator and grading ring is compared. It is shown that the lower electrode which is installed lower than the grading ring reduces the uniformity of electric field along the glass insulator, whereas the other installation method uniform the electric field along the glass insulator. Both two types of installation reduce the electric field at the outer surface of the grading ring. It is better that the lower discharge electrode is installed higher than grading ring when installing 110 kV flashover limiter on glass insulator.

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瞿杨全,江 岳,文 武,等.110kV线路雷击闪络限制器安装方式对玻璃绝缘子电场分布的影响[J].电力科学与技术学报,2020,35(1):157-162.
QU Yangquan, JIANG Yue, WEN Wu, et al. Influence of flashover limiter’s installation position on electric field distribution of 110 kV glass insulator[J]. Journal of Electric Power Science and Technology,2020,35(1):157-162.

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