高压绝缘套管参数优化设计

Parameter Optimization Design of High Voltage Insulating Bushing

高压绝缘套管是高压电气设备与地电位绝缘的重要元件,其均匀的电场分布与合理的结构是电力系统安全运行的保证。但目前在电力系统运行的过程中,高压套管击穿烧毁的事件屡屡发生。据此,文章针对252 kV高压绝缘套管结构设计与电场分布问题,以静电场方程作为理论基础,查阅大量文献,通过建立高压绝缘套管电场分布计算的数学模型和使用COMSOL软件的套管电场分布的仿真分析,对套管内部电容屏的电场强度分布以及套管外表面区域电场强度的影响进行研究,并据此对套管内部的电容屏进行结构优化设计。

High voltage insulating sleeve is an important component of high-voltage electrical equipment and ground potential insulation,and its uniform electric field distribution and reasonable structure are the guarantee of safe operation of power system.However,in the current situation of power system operation,high voltage bushing breakdown and burning have occurred repeatedly.According to this,we aimed at the structural design and electric field distribution of 252 kV high-voltage insulating sleeve,took the electrostatic field equation as the theoretical basis,consulted a large number of documents,and studied the electric field intensity distribution of the capacitance screen inside the sleeve and the influence of the electric field intensity on the outer surface of the sleeve by establishing a mathematical model for calculating the electric field distribution of high-voltage insulating sleeve and using COMSOL software to simulate the electric field distribution of the sleeve,Based on this,the structure of the capacitance screen inside the bushing is optimized.