[1]彭 凯,吴继岩,马 鑫,等.基于有限元的输电线路避雷器放电能量研究[J].电瓷避雷器,2020,(03):6-12.[doi:10.16188/j.isa.1003-8337.2020.03.002]
 PENG Kai,WU Jiyan,MA Xin,et al.Study on the Discharge Energy of Surge Arrester on Transmission Lines Based on Finite Element[J].,2020,(03):6-12.[doi:10.16188/j.isa.1003-8337.2020.03.002]
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基于有限元的输电线路避雷器放电能量研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
6-12
栏目:
避雷器
出版日期:
2020-06-25

文章信息/Info

Title:
Study on the Discharge Energy of Surge Arrester on Transmission Lines Based on Finite Element
作者:
彭 凯1 吴继岩1 马 鑫1 王晓燕1 刘清华2 汤道清3
(1.国网固原供电公司, 宁夏 固原 756000; 2.国网赣西供电公司, 江西 新余 338000; 3.中南大学, 长沙 410010)
Author(s):
PENG Kai1 WU Jiyan1 MA Xin1 WANG Xiaoyan1 LIU Qinghua2 TANG Daoqing3
(1.State Grid Guyuan Electric Power Company, Guyuan 756000, China; 2.State Grid Ganxi Electric Power Company, Xinyu 338000, China; 3.Central South University, Changsha 4100010, China)
关键词:
有限元 输电线路避雷器 放电能量
Keywords:
finite element transmission line arrester discharge energy
DOI:
10.16188/j.isa.1003-8337.2020.03.002
摘要:
为了减少由于超压放电时所产生的高能量引起避雷器特性的劣化率,通过有限元分析法建立一组不同尺寸和额定值的输电线路避雷器模型,并研究其在快波前浪涌事件中释放能量的能力。结果表明,有限元法模拟结果与PSCAD/EMTDC、EMTP-RV软件的模拟结果基本一致; 采用模型计算得出的放电电压和能量承受能力与PSCAD/EMTDC、EMTP-RV软件的模拟结果及制造商提供的测试数据基本吻合,证明所建立的模型适于所研究的工况; 另外,通过所建立模型,进行了参数分析,发现ZnO块的高度和直径的变化对单脉冲电流注入期间避雷器的放电能量能力产生显着影响; 改变绝缘层的厚度和介电常数显着影响避雷器内部的电场分布的均匀性而非放电能量能力。
Abstract:
In order to reduce the degradation rate of arrester characteristics due to high energy discharged by the overvoltage, a set of models with different sizes and ratings are established by analysis method, and the ability to release energy in the fast wave pre-surge event is studied. The results show that the finite element method simulation results are basically consistent with the simulation results of PSCAD/EMTDC and EMTP-RV software; the discharge voltage and energy withstand capability calculated by the model is basically consistent with the simulation results of PSCAD/EMTDC and EMTP-RV software, and also with manufacturers' data. Parametric analyses were also conducted using finite element method to study the effects of varying the design geometry of the ZnO blocks. It was found that variation in the height and diameter of the ZnO block results in remarkable effects on the discharge energy capability of the arrester during single impulse current injection. Meanwhile, varying the thickness and dielectric constant of the insulation layer significantly affects the uniformity of the electric field distribution inside the arrester rather than the discharge energy capability.

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备注/Memo

备注/Memo:
收稿日期:2018-10-26 作者简介:彭凯(1969—),男,工程硕士,高级工程师,主要研究方向:电网规划及运行、新能源技术等。 基金项目:国家电网公司科技发展计划(编号:201590)。
更新日期/Last Update: 2020-07-07