| 500kV GIS盆式绝缘子的暂态电场分析 |
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| 引用本文： | 高有华,王尔智,曹云东.500kV GIS盆式绝缘子的暂态电场分析[J].电工技术学报,2001,16(6):41-45. |
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| 作者姓名： | 高有华 王尔智 曹云东 |
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| 作者单位： | 沈阳工业大学电气工程学院,110023 |
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| 基金项目： | 国家九五重点科技攻关项目 ( 97 312 0 2 0 4) |
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| 摘 要： | 推导出了考虑介质极化损耗和位移电流情况下暂态电场计算的数学模型。采用有限元法对 5 0 0kVGIS盆式绝缘子在雷电冲击电压下的暂态电场进行了计算 ,雷电冲击电压波用De hamel积分来处理。给出了典型时刻的场域电位分布图 ,并与静态电场进行比较。找出了绝缘子表面的切向电场强度Et 及法向电场强度En 沿径向分布规律。讨论了松弛时间对切向电场强度Et 及法向电场强度En 的影响 ,给出了几个典型位置的电场强度随时间变化的曲线 ,为GIS的绝缘设计提供参考。
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| 关 键 词： | 绝缘子 雷电冲击电压 松弛时间 暂态电场 |
| 修稿时间： | 2001年6月25日 |
Transient Electric Field Analysis of 500 Kv Disc-type Spacer |
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| Gao Youhua,Wang Erzhi,Cao Yundong.Transient Electric Field Analysis of 500 Kv Disc-type Spacer[J].Transactions of China Electrotechnical Society,2001,16(6):41-45. |
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| Authors: | Gao Youhua Wang Erzhi Cao Yundong |
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| Affiliation: | Shenyang University Of Technology 110023 China |
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| Abstract: | A mathematical model of transient electric field is deduced,which takes dielectric polarization loss and displacement current into account.FEM is adopted to calculate the transient electric field of 500 kV disc type spacer under lightning impulse voltage,and the lightning impulse voltage curve is substituted by Dehamel integration.Potential distribution curves at representative time are shown,which are compared with the one in the quiescent state.It illustrates tangential electric field strength E t and normal electric field strength E n along with radial direction on the spacer surface.Some effects caused by relax time and electric field strength curves along with time are shown in this paper.It provides reference for GIS insulation design. |
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| Keywords: | Spacer Lightning impulse voltage Relax time Transient field |
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