高压交流输电线路电场建模与实时监测系统研究

Research on Electric Field Modeling and Real-Time Monitoring System of HVAC Transmission Lines

设计了一种基于狭小空间电场监测系统,该系统可以实时监测输电线路附近的电场信息。通过将模拟电荷法计算应用于二维电场以及三维电场中,计算目标位置电场分布。建立输电线路邻近有无金属结构建筑物三维简化模型,优化设置模拟电荷数量,进行高压输电线路周围电场的数值计算分析,并在MATLAB软件中建立数值计算模型,仿真分析得到输电线路有无建筑物的电场分布情况,验证简化模型的可行性。针对电场监测系统的采集系统做出整体方案的软硬件设计,完成电场标准环境参数的搭建与校准,通过在1000 kV高压交流试验基地进行现场测试,验证了采集系统装置的可行性。

The electric field monitoring system in the narrow and small space is designed in this paper to monitor the electric field information near transmission lines in real time.Through applying the charge simulation method to 2D and 3D electric field,the electric field distribution of target position is calculated.The simplified 3D model of transmission line with and without the presence of metal structure is built,the simulation charge quantity is set optimally,the electric field around high voltage transmission lines is calculated,and the numerical calculation model is established in the MATLAB.According to the simulation analysis,the electric field distribution of transmission lines with and without the structure is able to be obtained,which verifies the feasibility of the simplified model.Then,the paper makes the overall software and hardware design of the electric field monitoring acquisition system,completing the construction and calibration of electric field standard environmental parameters.After the field test in the 1000 kV high-voltage AC test base,the feasibility of the acquisition system device is verified.