教科版三年级科学下册第三单元《温度与水的变化》复习课件.ppt

摘要
近年来,电力系统迅速发展,传统的变电站不支持 IEC61850 标准,来自不同厂商的智能电子设备无法很好的实现互操作和集成;同时,电力设备的故障往往会影响到整个系统的安全运行,导致维修的盲目性,并造成巨大的经济损失。本文以 IEC61850 标准为基础,实现了变电站设备管理系统,对设备进行实时管理并进行可靠性分析。
本文首先通过试验比较,选择可靠性分析方法。以 Weibull 分布作为可靠性分析的模型,研究了 Weibull 分布的参数估计方法,对具体方法进行剖析,并通过模拟试验,在不同数量的样本数据的情况下,对各种估计方法进行实验对比, 重点比较估计值的偏差和有效性,并总结各自方法的特点。然后选择一种方法应用于设备管理系统中。
最后实现了变电站设备管理系统,为变电站管理人员提供完整的变电站设备组成和电气连接结构,结合通信技术完成了对设备的实时监测和数据交换;并把可靠性分析方法应用在实际的电力设备中,以 Weibull 模型为基础处理样本数据, 得到设备的寿命特征和失效率。
关键词:IEC61850 配置描述文档 可靠性分析 Weibull
Abstract
In recent years, the electric power system is developing the traditional substation does not support IEC61850 standard , the intelligent electronic equipmen from different manufacturers can not achieve interoperability and the
same time, electric power equipment failures tends to affect the safe operation of the entire system, lead to the blindness of maintenance, and caused huge economic losses. In this paper, we achieve the substation equipmemt management system,which is based on IEC61850 standard and realize real-time management and reliability analysis.
This article first selects the reliability analysis methods through experiment parison. We take Weibull distribution as the model of the reliability analysis. And we focus on the parameter estimate methods of the Weibull through
the simulation test,in different number of sample data , compare to all sorts of
estimation method,focusing more on biase and effectiveness of the the characteristics of each method are then, a method is taken to be used in the equipment management system.
Finally we achieve the substation equipment managem can provide substation manager with plete substation equipment and electrical connection
munication technology , plete real-time
monitoring and data exchange with the the reliability analysis method is applied to the electric power equipment,approach the sample data with Weibull model