基于径向基函数拟合的多频杆塔接地电阻测量方法  

Multi-frequency Tower Grounding Resistance Measurement Based on Radial Basis Function Fitting

作　　者：褚文超 CHU Wenchao(Ulanqab Power Supply Branch,Ulanqab 012000,Nei Mongol,China)

机构地区：[1]乌兰察布供电分公司,内蒙古乌兰察布012000

出　　处：《电气传动》2024年第11期81-86,共6页Electric Drive

摘　　要：输电线路杆塔作为电力系统正常运行的必要设备,其接地电阻的精准检测对整个电力系统的安全稳定运行尤为重要,尤其在防雷性能的判断等方面。因此,提出一种基于径向基函数拟合的多频杆塔接地电阻测量方法。该方法能够在不断开杆塔接地引线的前提下,采用多频电流作为激励,测量不同频率的输入电流得到接地电阻值,基于这些数据采用径向基函数神经网络拟合,实现杆塔接地电阻的准确测量。同时,通过多个杆塔接地电阻实测证明了该方法的准确性、可靠性,且所提方法操作简单,很大程度上方便了检测人员现场的测量,具有较强的实际意义。Transmission line tower as the normal operation of the power system of the necessary equipment,its grounding resistance accurate detection for the safe and stable operation of the entire power system is particularly important,especially in the judgment of lightning protection performance and other aspects.Thus,a multifrequency tower grounding resistance measurement method was proposed based on radial basis function(RBF)fitting.The method was able to use multi-frequency current as an excitation under the premise of not disconnecting the tower grounding lead,measure the grounding resistance value obtained from the input current of different frequencies,and then use radial basis function neural network fitting based on these data to realize the accurate measurement of the tower grounding resistance.At the same time,the accuracy and reliability of the method was proved through the measurement of grounding resistance of multiple towers,and the proposed method is simple to operate,which largely facilitates the measurement of inspectors on the spot,and has strong practical significance.

关 键 词：杆塔 接地电阻 径向基函数 

分 类 号：TM75[电气工程—电力系统及自动化]