【作者】 莫海勇；

【导师】 李林川；

【作者基本信息】 天津大学 ， 电力系统及其自动化， 2007， 硕士

【摘要】 配电系统可靠性是电力系统的运行特性及其可靠性的集中体现。配电系统可靠性的研究和应用,对保证供电质量、提高经济效益以及进行配电系统网络的建设和改造有着重要的指导作用。本文在广泛阅读国内外配电系统可靠性分析的相关文献的基础上,对几种常用的可靠性评估方法进行了综合比较,结合区间运算和配电系统可靠性的最小路评估方法,提出了一种配电系统可靠性评估的新的方法。该方法是在最小路法的基础上,在评估运算的过程中将元件的可靠性评估原始参数用区间数代替,将评估公式区间化,因此评估结果也是一个有上下限的区间,把可靠评评估指标限定在一定范围之内。该方法在一定程度上避免了由于可靠性原始参数由于统计资料不足或统计误差带来的不精确性对评估结果的影响,可以方便地只通过一次区间评估求解出参数在给定区间段上任意变化时的系统可靠性指标范围,因而更能体现系统可靠性指标的真实值。在运算过程中引入了区间运算反演公式,一定程度上有效克服了区间分析的超宽度问题。本文用一个简单的辐射型网络和IEEE RBTS BUS 6系统对该方法进行了验证,证实了其有效性。更多还原

【Abstract】 Distribution system connect the consumer directly.The operation and reliability of total power systems are mostly characterized by distribution systems reliability.Research and application of distribution systems reliability can effectively assure the quality of power supply, modernize electric power industry,and improve the production and management of electric power industry,increase the economic benefit and society benefit,direct the construction and reconstruction networks.Distribution system reliability assessment is depended on the reliability parameter of the system component. Due to the statistical error and lacking of datum,the reliability parameter are uncertainty.And the results of the distribution system reliability assessmen are not exactitude.Based on the comprehensivere adding of references about distribution system reliability,the paper compares several reliability evaluation methods and presents a method using minimal path principle and interval arithmetic to assess the reliability of complicated distribution system,Interval evaluation method takes into account the uncertainty of all of the parameters and is able to provide strict bounds for indices,with only one evaluation. The result interval will contain all possible solutions due to the variations of the input parameters. The contra-illation method is used to conquer the over-estimate problem of interval operation.The effectiveness has been proved in a simple system and the IEEE RBTS BUS 6 system.更多还原