绝缘子表面积测量与精确计算方法

Measurement and Accurate Calculation Methods of Insulator Surface Area

输变电设备的污闪严重威胁输电系统的安全运行和可靠性,对输变电设备进行污秽清扫是防治输变电设备污闪的重要手段,绝缘子表面的盐密和灰密是制定清扫周期的重要参数,而绝缘子表面积是确定绝缘子表面污秽度的重要参数。本文分析了表面积的测量原理,给出了测量方法与计算方法。计算的结果与实际结果的误差很小,具有一定的工程实践意义。

Pollution flashover faults of electrical transmission and transformer equipment may pose a serious threat to the reliable and safe operation of transmission systems. Pollution cleaning of transmission and transformer equipment is an important means to prevent the pollution flashover. ESDD and NSDD on insulator surface are key parameters for formulating a cleaning cycle, and insulator surface area is a major parameter to determine the contamination severity levels of insulator surface. In this paper, the measuring principle of surface area was analyzed; and the measurement and calculation method was given. The method can obtain calculation results that agree well with actual ones and therefore can be used practically to some extent.