[1]李志忠,陈怀飞,高 峰,等.110 kV输电线路加装限流线圈耐雷水平计算研究[J].电瓷避雷器,2019,(06):124-130.[doi:10.16188/j.isa.1003-8337.2019.06.021]
 LI Zhizhong,CHEN Huaifei,GAO Feng,et al.Research on Lightning Withstand Level of 110 kVTransmission Line Installed Current Limiting Coil[J].,2019,(06):124-130.[doi:10.16188/j.isa.1003-8337.2019.06.021]
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110 kV输电线路加装限流线圈耐雷水平计算研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年06期
页码:
124-130
栏目:
避雷器
出版日期:
2019-12-10

文章信息/Info

Title:
Research on Lightning Withstand Level of 110 kVTransmission Line Installed Current Limiting Coil
作者:
李志忠1 陈怀飞2 高 峰13 王 森1 文习山2 李 伟1 鲁海亮2
(1.国网陕西省电力公司电力科学研究院,西安 710100; 2.武汉大学,武汉 430072; 3.西安交通大学,西安 710049)
Author(s):
LI Zhizhong1 CHEN Huaifei2 GAO Feng13 WANG Sen1 WEN Xishan2 LI Wei1 LU Hailiang2
(1.State Grid Shaanxi Electric Power Research Institute, Xi'an 710100, China; 2.Wuhan University, WuHan 430072, China; 3.Xi'an Jiaotong University, Xi'an 710048, China)
关键词:
限流线圈 防雷 有限元
Keywords:
current limiting coil lightning protection finite element
DOI:
10.16188/j.isa.1003-8337.2019.06.021
摘要:
提出在110 kV线路杆塔横担与避雷线之间加装限流线圈,以提升线路耐雷水平的防雷方法。为验证其防雷效果,建立了限流线圈有限元模型,精确计算了线圈的分布参数,搭建了考虑线圈分布参数模型的110 kV线路落雷模型,研究了线圈电感、对地电容及匝间电容对计算结果的影响,结果表明:合适的限流线圈电感为0.1 mH,无需人为补偿对地电容及匝间电容,加装电感为L0的限流线圈后,入地雷电流陡度下降了28.8%,线路耐雷水平提升了12.0%。最后,根据计算结果,提出了限流线圈结构优化设计方案,计算了55 kA雷电流下限流线圈场强分布变化,验证了装置的可行性。
Abstract:
Because of the high cost and limitations of the traditional lightning protection methods, this paper proposes anewmethod to improve the lightning withstand level of 110 kVtransmission lines by installing current limiting coil between the cross arm and lightning rod. In order to verify the feasibility, the finite element model of current limiting coil is established to calculate the distribution parameter accurately. Then EMTP model of 110 kVtransmission lines is set up to study the effect of inductance, capacitance to ground and inter-turn capacitance on the lightning withstand calculation results separately. The results show that the appropriate value of current limiting inductance is 0.1 mH, there is no need to compensate for the capacitance to earth or inter-turn capacitance. After the installation of the 0.1mH current limiting coil, the ground current of the stricken tower falls by 28.8%, the lightning withstand level increases by 12.0%. Finally, according to the calculation result of voltage, this paper puts forward the optimization design scheme of the current limiting coil, and calculates the distribution of electric field strength when 55 kA 2.6/50 μs lightning current strikes the coil. The distribution of electric field strength verifies the feasibility of the devicein the 110 kV transmission lines lighting protection.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-12 作者简介:李志忠(1975—),男,硕士,高级工程师,从事高电压试验与接地工程应用研究。
更新日期/Last Update: 2019-12-10