配电网故障定位系统接地电阻器在高原环境下的温升研究

摘要

In this paper,making use of three methods to estimate the temperature rise of grounding resistors at different altitudes was implemented,including obtaining actual temperature rise data of grounding resistors un-der high altitude conditions by the experiment.The theoretical analysis and experimental data show that, the temperature rise of the grounding resistor in the plateau environment is higher than that in the plain area;when the fault location system is used in the plateau situation,the ex-works test should strictly control the tempera-ture rise.%采用3种方法,对不同海拔情况下,配电网故障定位系统的接地电阻器的温升进行理论估计,并通过试验实测得到高海拔条件下接地电阻器的实际温升数据.通过理论分析和试验实测数据得出接地电阻器在高原环境下的温升较平原地区有所增加,当故障定位系统使用于高原情况时,出厂试验需要更加严格控制温升.