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首页> 外文会议>2000 International Conference on Power System Technology >A Comparison between Two Tower Models for Lightning Surge Analysis of 77kV System
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A Comparison between Two Tower Models for Lightning Surge Analysis of 77kV System

机译：两种77kV系统雷电浪涌模型的比较

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This paper investigates characteristics of a multistory tower model and a distributed line model, in comparison with field test results of back flashovers on a 77kV transmission line for summer lightning. The multistory tower model, composed of distributed parameter lines and parallel R//L circuits, is used as a detailed model in Japan lately, and the distributed line model, composed only of distributed parameter lines, has been widely used as a simple model. EMTP simulation results by the multistory tower model show that most flashovers occur on an upper phase, while the field test results show a uniform distribution of the flashovers on every phase. Simulation results by the distributed line model agree well with the field test results. However, a surge impedance of this model is constant, independently from a configuration of a given tower, and a basis of parameters is not clear. Thus, it is said to be necessary to develop a tower model for a back-flashover analysis on a low-voltage transmission line considering the tower configuration.
机译：与夏季雷击的77kV输电线路上反向闪络的现场测​​试结果相比，本文研究了多层塔模型和分布式线路模型的特性。最近，在日本使用由分布参数线和并行R // L电路组成的多层塔模型作为详细模型，仅由分布参数线组成的分布线模型已被广泛用作简单模型。多层塔模型的EMTP模拟结果表明，大多数闪络发生在上相，而现场测试结果表明，闪络在每个相上的分布均匀。分布式线路模型的仿真结果与现场测试结果非常吻合。但是，该模型的电涌阻抗是恒定的，与给定塔架的配置无关，并且参数的依据尚不清楚。因此，据认为有必要开发一种塔模型，以在考虑塔构造的情况下对低压输电线路进行反向闪络分析。

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