基于场强阈值的变电站无人机巡检安全距离研究  

Research on Safety Distance of UAV Inspection Basedon Field Strength Threshold in Substation

作　　者：刘士利[1] 邓金锁 丁伟 刘庆达 LIU Shili;DENG Jinsuo;DING Wei;LIU Qingda(Electrical Engineering College,Northeast Electric Power University,Jilin Jilin 132012;State Grid Jilin Power Supply Company,Jilin Jilin 132011)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]国网吉林供电公司,吉林吉林132011

出　　处：《东北电力大学学报》2023年第3期55-60,共6页Journal of Northeast Electric Power University

基　　金：吉林省自然科学基金(20230101340JC)。

摘　　要：变电站无人机巡检作业是智能电网发展的重要方向之一,相较于输电线路,变电站设备众多且集中布置,导致其周围空气间隙相对较小、电磁场分布复杂,这对无人机安全巡检提出了更高的要求。文中构建了悬浮导体放电测试平台,试验研究了无人机-导线间隙的起始放电电压,采用有限元法计算了间隙放电时无人机表面最大电场,并以此值作为电场阈值,通过分析220 kV变电站典型设备的电场分布,得出了无人机巡检变电站时的电场安全距离;以200μT作为无人机主控部分的磁场阈值,确定了无人机巡检时的磁场安全距离。研究结果表明,对于当前典型的无人机结构,当220 kV变电站负载电流小于315 A时,巡检安全距离主要受电场约束,可取为37 cm;当负载电流较大时,巡检安全距离可由磁场决定。Substation unmanned aerial vehicle(UAV)inspection is one of the important directions for the development of smart grids.Compared with transmission lines,substation equipment is numerous and centralized,resulting in relatively small air gaps around them and complex electromagnetic field distribution.The UAV inspection has been put forward higher requirements.In this paper,a suspended conductor discharge test platform is constructed,and the initial discharge voltage of the UAV-wire gap is experimentally studied.The finite element method is used to calculate the maximum electric field on the UAV surface during gap discharge,and this value is used as the electric field threshold.For the electric field distribution of typical equipment in 220kV substations,the electric field safety distance for UAV inspections in substations is proposed;200μT is used as the magnetic field threshold of the main control part of UAVs to determine the magnetic field safety distance for UAV inspections.The research results show that for the current typical UAV structure,when the 220kV substation load current is less than 315A,the inspection safety distance is mainly restricted by the electric field,which can be set to 37cm;when the load current is large,the inspection safety distance can be determined by the magnetic field.

关 键 词：安全距离 无人机 电场强度 磁感应强度 220 kV变电站 

分 类 号：TM85[电气工程—高电压与绝缘技术]