低压配电系统单相非线性负荷谐波诺顿模型研究

发布时间：2018-01-22 07:02

本文关键词： 低压配电系统非线性负荷谐波诺顿模型波动量法投切电容　出处：《中国电机工程学报》2014年16期 　论文类型：期刊论文

【摘要】：谐波诺顿模型是一种简化的非线性负荷谐波模型,其构造和使用都是有条件的。对利用两种不同运行状态下的电压和电流波动量构造模型的方法(波动量法)进行理论分析,结果表明:电压波峰系数是影响低压配电系统单相非线性负荷谐波诺顿(Norton)模型成立的关键因素;模型只能在相同的波峰形态下构造(平顶或尖顶),且仅适用于相应的电压波形环境。实验和系统实测数据验证了这一结论。大量的实测结果还表明:在民用低压配电系统中,供电电压几乎均呈平坦波形,这为非线性负荷的谐波Norton模型参数提取提供了良好的构造和使用条件。文中还对通过投切电容器产生电压和电流波动量的方法进行了合理性分析,证实所提方法能有效地获取负荷谐波Norton模型参数。
[Abstract]:Harmonic Norton model is a simplified nonlinear load harmonic model. Its construction and application are conditional. The method of constructing the model by using voltage and current fluctuation in two different operating states (fluctuation method) is analyzed theoretically. The results show that the voltage peak coefficient is the key factor influencing the establishment of the Norton Norton model of single-phase nonlinear load in low-voltage distribution system. The model can only be constructed in the same peak shape (flat-top or cusp). And it is only applicable to the corresponding voltage waveform environment. The experimental and system measured data verify this conclusion. A large number of measured results also show that in the civil low-voltage distribution system, the supply voltage is almost flat waveform. This provides a good construction and application condition for parameter extraction of harmonic Norton model of nonlinear load. The method of generating voltage and current fluctuation by switching capacitor is also analyzed in this paper. It is proved that the proposed method can effectively obtain the load harmonic Norton model parameters.
【作者单位】：输配电装备及系统安全与新技术国家重点实验室(重庆大学);华南理工大学建筑设计研究院;
【基金】：国家自然科学基金项目(51077138)~~
【分类号】：TM714
【正文快照】： 0引言为了有效地分析、评估和治理系统中的负荷谐波情况,需要有合理的谐波模型来表征其谐波特性。近年来,有许多学者展开了负荷谐波模型的相关研究,例如:电流源模型[1-2]、谐波诺顿(Norton)模型[3-5]、谐波耦合导纳矩阵模型[6-8]、基于最小二乘逼近的谐波源模型[9]及基于传递

【参考文献】