Identification of static load characteristics based on measurements in medium-voltage distribution network
Identification of static load characteristics based on measurements in medium-voltage distribution network
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基于中压配电网测量的静态负载特性识别
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Milanović
中科院分区：
文献类型：
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作者：
L. Korunović;D. P. Stojanovic;J. Milanović
本文讨论了现场实测中压配电网的静态负荷特性（P-V和Q-V特性）。通过对有载分接变压器在不同季节、不同工作日、不同时段分接位置的变化进行了实验研究。P-V和Q-V负载特性分为暂态特性和稳态特性两类。讨论并量化了它们之间的差异。这两个类在数学上都用多项式、线性和指数SL模型来描述。采用最小二乘法进行曲线拟合，得到模型参数。已开发的负荷模型的充分性进行了严格的评估和讨论。所有的静态特征都按照季节和昼夜周期进行分组，并相互比较。最后，给出了无电采暖住宅负荷SL模型在不同季节的参数建议。
The authors deal with static load (SL) characteristics (P-V and Q-V characteristics) of a medium-voltage distribution network derived from field measurements. The experiments have been performed by changing the tap position of an on-load tap-changing transformer in different seasons, different week days and day periods. P-V and Q-V load characteristics are divided into two classes, transient and steady-state characteristics. The differences between them are discussed and quantified. Both classes are mathematically described by polynomial, linear and exponential SL models. Model parameters are obtained by curve fitting using a least square method. The adequacy of developed load models is critically assessed and discussed. All the static characteristics are grouped according to seasons and day periods and are mutually compared. Finally, the parameters of the SL models for residential load without electrical heating are suggested for different seasons.