Power system operational reliability evaluation based on real-time operating state

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI:10.1109/IPEC.2005.207002

Yuanzhan Sun, Lin Cheng, Haitao Liu, Shan He

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引用次数: 43

Abstract

Traditional reliability evaluation theory, which reflects long-term average reliability level of power systems in the typical operating mode, ignores the impact of real-time operating conditions on system's reliability, so that the system's reliability level in fault states or special operating modes can not be expressed. In order to evaluate power system's reliability in realtime operating states, the concept and algorithm of operational reliability are proposed for the first time. Analyzing the impact of such operating conditions as transfer capacity of lines, bus voltage and system frequency on failure probability of components, component's reliability models based on real-time operating conditions are established in the algorithm of operational reliability. Fault consequences are analyzed with the influence of operating conditions, such as power generation dispatch, load level and network configuration. The evaluation results of a simple system show that real-time operating conditions have a strong impact on system's operational reliability which can be reflected by the presented algorithm

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基于实时运行状态的电力系统运行可靠性评估

传统的可靠性评估理论反映的是电力系统在典型运行模式下的长期平均可靠性水平，忽略了实时运行条件对系统可靠性的影响，无法表达系统在故障状态或特殊运行模式下的可靠性水平。为了评估电力系统实时运行状态下的可靠性，首次提出了运行可靠性的概念和算法。在运行可靠性算法中，分析了线路传输能力、母线电压、系统频率等运行工况对部件失效概率的影响，建立了基于实时运行工况的部件可靠性模型。分析了发电调度、负荷水平和网络配置等运行条件对故障后果的影响。一个简单系统的评估结果表明，实时运行条件对系统的运行可靠性有很大的影响，这可以通过所提出的算法反映出来

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2005 International Power Engineering Conference

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