The analysis and simulation of the brittleness of electric power system based on chart theory

Panxiang Rong, Mei-wei Zhang, J. Sun
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Abstract

Transformer failure makes the power system blackout,and the number of transformer failures is very large every year. Finding the spread source of transformer brittleness can avoid the transformer failures. In this paper, the method and step of building the brittle model based on the chart theory are brought forward. Building a model of 7 nodes to transformer and analyze it. Obtaining the layered electric power system brittle model and the brittle source. The fuzzy analytic hierarchy process is applied to build a three-layer brittle model for transformer. The relative important degree order vector of transformer failures is obtained for certain factor in certain layer. The high danger degree spread sources are found by defining the danger degree of the spread sources. As long as they are monitored intentionally, the transformer brittleness can be avoided from happening to the maximal degree. Verifying this method is usefulness to the analysis of electric power system.
基于图论的电力系统脆性分析与仿真
变压器故障造成电力系统大面积停电,每年发生的变压器故障数量非常大。找出变压器脆性的传播源,可以避免变压器故障的发生。本文提出了基于图论建立脆性模型的方法和步骤。建立了7个节点的变压器模型并进行了分析。得到了分层电力系统的脆性模型和脆性源。应用模糊层次分析法建立了变压器的三层脆性模型。得到了某一层某一因素对变压器故障的相对重要度序向量。通过确定传播源的危险程度,找到高危险程度的传播源。只要有意识地进行监测,就可以最大程度地避免变压器脆性的发生。验证了该方法对电力系统分析的实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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