电压暂降影响因素的聚类分析

Cluster Analysis of Factors Affecting Voltage Sag

电能质量是保障电力系统安全运行的前提,是保证用户正常用电的基础条件。在各类电能质量问题中,电压暂降对用户造成的影响最为严重,因此对电压暂降各类影响因素的研究尤为重要。本文以湖北高新工业园区部分网络为基础,建立simulink仿真模型,聚类分析不同故障类型、中性点接地方式以及检测算法对电压暂降特征量的影响。由仿真可知:故障类型不同,引起的电压暂降深度亦不同,并且中性点接地方式以及检测算法的选取也同样会对电压暂降特征量造成一定影响。

Power quality is the premise to ensure the safe operation of the power system, and is the basic condition for ensuring the normal use of electricity by users. Among all kinds of power quality problems, the voltage sag has the most serious impact on users, so it is especially important to study the various factors affecting voltage sag. Based on the partial network of Hubei Gaoxin Industrial Park, this paper establishes the simulink simulation model, and cluster analyzes the effects of different fault types, neutral grounding methods and detection algorithms on the voltage sag characteristic. It can be seen from the simulation that the type of fault is different, and the voltage sag depth is different, and the neutral grounding method and the selection of the detection algorithm also have certain influence on the voltage sag characteristic.