Stochastic prediction of voltage sags in a large transmission system

1998 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record. Papers Presented at the 1998 Annual Meeting (Cat. No.98CH36202) Pub Date : 1998-05-03 DOI:10.1109/ICPS.1998.692526

M. R. Qader, M. Bollen, R. Allan

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引用次数: 207

Abstract

In this paper we discuss two stochastic assessment methods for voltage sags and apply them to a 98-bus model of the 400 kV National Grid of England and Wales. The method of fault positions is most suitable for implementation in a software tool. It has been used to get exposed areas and sag frequencies for each bus. The results are resented in different ways, including a so-called voltage sag map showing the variation of the sag frequency through the network. The method of critical distances is more suitable for hand calculations, as both the amount of data and the complexity of the calculations are very limited. It has been used to obtain sag frequencies for a number of buses. A comparison with the results obtained by using the method of fault positions, shows that the method of critical distances is an acceptable alternative were software or system data are not available for a more accurate analysis.

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大型输电系统电压跌落的随机预测

本文讨论了电压跌落的两种随机评估方法，并将其应用于英格兰和威尔士400千伏国家电网的98母线模型。故障定位方法最适合在软件工具中实现。它被用来计算每辆公共汽车的暴露面积和凹陷频率。结果以不同的方式呈现，包括所谓的电压暂降图，显示了网络中暂降频率的变化。关键距离的方法更适合手工计算，因为数据量和计算的复杂性都非常有限。它已被用于获得一些公共汽车的下垂频率。与故障位置法所得结果的比较表明，在没有软件或系统数据进行更精确分析的情况下，临界距离法是一种可接受的替代方法。

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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来源期刊

1998 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record. Papers Presented at the 1998 Annual Meeting (Cat. No.98CH36202)

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