4次雷电流实测与雷电定位系统观测的比较分析

Comparative Analysis of Four Lightning Current Measure Results with Lightning Location System

雷电流波形及幅值是电网设备防雷设计及改造的重要基础参数,文章通过研制具备GPS定位和对时功能的高精度雷电流实测装置,利用高塔直击雷监测和人工火箭引雷试验,监测积累南方电网区域内的雷电流特征参数,并将雷电流实测结果与南方电网雷电定位系统遥测结果进行对比分析。4次雷电流实测数据表明,在参与定位探头个数较多的情况下,雷电定位系统定位偏差为172-675 m,幅值测量偏差为-22.8%-4.5%。

The waveform and amplitude of lightning crnrent are important foundation parameters for transform of electric power equipments. In this paper, high accuracy lightning crnrent measure devices with the function of GPS clockand positioning are fristly developed, and the lightning current parameters in the region of China Southern Power Grid are accumulated by monitoring of lightning directly stroke on high tower and artificial rocket triggered lightning test, the measure results between the lightning current measure device and the lightning location system of CSG are comparative analysis lastly. The four lighting crnrent measured results indicate that the position accuracy of lightning location system is reach to a high accuracy of 172 m to 675 m while the amplitude accuracy is varied from -22 . 8V to 4 . 5 V.