Complete matrix formulation of fault-position method for voltage-dip characterisation
Complete matrix formulation of fault-position method for voltage-dip characterisation
复制标题
用于电压暂降表征的故障位置方法的完整矩阵公式
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Verde
中科院分区：
文献类型：
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作者：
G. Carpinelli;P. Caramia;C. D. Perna;P. Varilone;P. Verde
故障定位方法对于表征由于故障而出现电压暂降的电力系统性能非常有用。它基于对所有系统节点和系统线路上的许多点重复进行的短路模拟：低于预设阈值的故障电压是所需的电压骤降。这些倾角存储在所谓的倾角矩阵中，该矩阵仅包含沿线点发生故障时所有系统节点中的倾角。本文提出了一种新的紧凑的倾角矩阵分析公式，用于根据二维矢量关系以及站点和系统电压倾角指数来分析平衡和不平衡故障。当必须进行多次敏感性分析以估计与可能的增强和/或补偿装置相关的现场和系统电压骤降指数的变化时，紧凑公式是非常有用的工具。倾角矩阵的图形表示也被建议作为确定系统性能关键区域的有价值的工具。给出了实际传输系统的数值应用，以证明该模型的简单适用性。
The method of fault position is useful for characterising power-system performance in the presence of voltage dips due to faults. It is based on short-circuit simulations repeated for all the system nodes and for many points along the system lines: fault voltages that are below a preset threshold are the required voltage dips. These dips are stored in so-called dip matrices which contain only the dips in all the system nodes when faults occur at points along the lines. The paper proposes a new compact analytical formulation of dip matrices for balanced and unbalanced faults in terms of bidimensional vector relations and for site- and system-voltage dip indexes. Compact formulations are very useful tools when several sensitivity analyses have to be conducted to estimate variation of site- and system-voltage dip indexes in relation to possible reinforcement and/or compensation devices. Graphical presentation of dip matrices is also proposed as a valuable tool to ascertain the critical area for system performance. Numerical applications to an actual transmission system are presented to demonstrate the easy applicability of the model.