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TEST SYSTEM OF DYNAMIC MODELING OF ELECTROMAGNETIC TRANSITION PROCESS OF THREATS

机译:电磁迁移过程动态建模测试系统

摘要

A power transmission line lightning electromagnetic transient dynamic simulation experimental system is based on a power transmission line and lightning conductor model, a tower and tower grounding body model and an insulator model; A tower is divided into a diagonal member section, a cross arm section and a principal member section; meanwhile, factors of an insulator, a power transmission line and an lightning conductor are taken into consideration; and a lightning stroke transient equivalent circuit is simulated and constructed through corresponding wave impedance, self-impedance, mutual impedance, self-admittance, mutual admittance, inductance and the like. The power transmission line lightning electromagnetic transient dynamic simulation experimental system provides a physical experimental platform for collecting lightning stroke current and voltage data along a power transmission line. Surge current is added into different positions of the system, signals of a far-end lightning conductor and a far-end wire are measured, the transmission process of a lightning wave in the whole power transmission line can be analyzed, and according to an analysis result, the lightning protection to the section weak in lightning protection on the power transmission line and to the substation equipments is optimized. The characteristic quantity is analyzed according to a wave form obtained from the measurement, and a pattern recognition method of power transmission line direct stroke and shielding failure flashover can be provided.
机译:输电线路雷电电磁暂态动态仿真实验系统基于输电线路和雷电导体模型,塔架和塔架接地体模型以及绝缘子模型;塔分为斜构件段,横臂段和主要构件段。同时考虑绝缘子,输电线路和避雷针的因素。通过相应的波阻抗,自阻抗,互阻抗,自导纳,互导,电感等对雷击瞬变等效电路进行仿真和构建。输电线路雷电电磁暂态动态仿真实验系统提供了一个物理实验平台,用于沿输电线路收集雷击电流和电压数据。将浪涌电流添加到系统的不同位置,测量远端避雷针和远端导线的信号,可以分析雷电波在整个输电线路中的传输过程,并根据分析得出结果,优化了对输电线路防雷能力弱的部分和变电站设备的防雷能力。根据从测量获得的波形来分析特征量,并且可以提供电力传输线直行程和屏蔽故障闪络的模式识别方法。

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