电气绝缘系统和材料可以使用恒定应力测试进行测试，在该测试中，绝缘材料可能会发生击穿 对多个试样和渐进应力试验进行了测量，其中 可以测量电压。在任何一种情况下，都会发现每个试样的结果不同 对于给定的试验条件，获得的数据可以用统计分布表示。 本指南举例说明了分析此类数据的统计方法。 本指南的目的是定义统计方法，以分析分解时间和分解时间 从固体绝缘材料的电气试验中获得的电压数据，用于以下目的: 系统的表征、与另一个绝缘子系统的比较以及概率的预测 在给定时间或电压下的击穿。 给出了分析完整数据集和截尾数据集的方法，其中并非所有样本 崩溃了。该指南包括了确定数据是否可靠的方法和示例 适用于分布、图形和基于计算机的技术，用于估计 分布，基于计算机的统计置信区间估计技术，以及 用于比较数据集和一些案例研究。对威布尔函数的分析方法进行了详细描述 分配文中还给出了甘贝尔分布和对数正态分布的一些计算方法。所有的例子 本指南中使用的基于计算机的技术可从以下网站下载:？http: // 石斑鱼。ieee。org/groups/930/IEEEGuide。xls。A.确定短时耐受电压或工作电压的方法 本指南中未介绍绝缘系统的电压。数学技巧包含在 本指南可能不直接适用于设备寿命的估算。

Electrical insulation systems and materials may be tested using constant stress tests in which times to breakdown are measured for a number of test specimens, and progressive stress tests in which breakdown voltages may be measured. In either case, it will be found that a different result is obtained for each specimen and that, for given test conditions, the data obtained may be represented by a statistical distribution. This guide describes, with examples, statistical methods to analyze such data. The purpose of this guide is to define statistical methods to analyze times to breakdown and breakdown voltage data obtained from electrical testing of solid insulating materials, for purposes including characterization of the system, comparison with another insulator system, and prediction of the probability of breakdown at given times or voltages. Methods are given for analyzing complete data sets and also censored data sets in which not all the specimens broke down. The guide includes methods, with examples, for determining whether the data is a good fit to the distribution, graphical and computer-based techniques for estimating the most likely parameters of the distribution, computer-based techniques for estimating statistical confidence intervals, and techniques for comparing data sets and some case studies. The methods of analysis are fully described for the Weibull distribution. Some methods are also presented for the Gumbel and lognormal distributions. All the examples of computer-based techniques used in this guide may be downloaded from the following web site "http:// grouper.ieee.org/groups/930/IEEEGuide.xls." Methods to ascertain the short time withstand voltage or operating voltage of an insulation system are not presented in this guide. Mathematical techniques contained in this guide may not apply directly to the estimation of equipment life.