摘要
我国开展雷击风险评估业务的主要依据为GB/T 21714-2。而在规范中,有些评估参数在实际取值计算时,给出的值不太接近真实情况,科学性不够,影响了评估的精准性。基于最新发布的IEC 62305-2 2010,其中有些参数的取值方法、计算公式发生了改变。本文主要通过matlab数值模拟对雷击建筑物附近引起内部系统故障概率PMS的取值方法及优化进行了一些分析讨论,分析新版本变动的原因及其利弊。本文也通过讨论和数值拟合获得了连续取值的曲线,很好的解决了该问题,使得参数的取值计算更为准确,对防雷评估工作具有较强的实用价值。
The main basis for conducting lightning risk assessment business in our coun 21714-2. In the specification, the values given by some evaluation parameters during try is GB/T the actual numerical calculation is not quite close the real situation, not science enough, affecting the accuracy of the assessment. Based on the latest publication of IEC 62305-2 2010, where the value method of some parameters and the formula are changed. Through the MATLAB numerical simulation, the value method and optimization of building internal system failure probability PMS caused by nearby lightning strikes are analyzed and discussed. The reason of changes in the new version and their pros and cons. Through discussion and numerical fitting the continuous values making the value and calculation of the parameter more lightning protection assessment. curve is obtained, the problem is well solved, accurately, has a strong practical value for the
出处
《电瓷避雷器》
CAS
北大核心
2015年第6期103-106,110,共5页
Insulators and Surge Arresters
关键词
雷击风险
评估参数
计算对比
数值拟合
lightning risk
assessment parameters
calculated contrast
numerical fitting
