应用非线性元件耦合矩阵模型的谐波潮流算法  

Harmonic Power Flow Calculation Using Linearly Coupled Admittance Matrix Model for Nonlinear Elements

作　　者：郑伟杰[1] 孙媛媛[1] 徐文远[1] 

机构地区：[1]山东大学电气工程学院,山东省济南市250061

出　　处：《中国电机工程学报》2008年第10期117-122,共6页Proceedings of the CSEE

基　　金：教育部长江学者基金项目(2003);国家留学基金委项目(2006[3037])。

摘　　要：基于非线性元件的线性耦合导纳矩阵模型提出一种谐波潮流的新算法,并以晶闸管控制电抗器(thyristor controlled reactor,TCR)为例来阐述潮流算法的思路。由于谐波耦合导纳矩阵是非线性元件TCR线性化后的模型,将该数学模型与系统方程联立,通过求解一系列线性方程即可获得系统谐波潮流结果。在供电电压严重畸变的情况下,提出用谐波电压积分求得TCR开关函数的关断角,由此对耦合导纳矩阵模型进行修正,再用修正后的模型迭代求解谐波潮流。时域仿真法验证修正后TCR谐波导纳矩阵模型的精确度和谐波潮流算法的有效性。A novel harmonic power flow algorithm was presented. The algorithm is based on the linearly coupled admittance models for nonlinear elements. A thyristor controlled reactor （TCR） was used as an example of nonlinear element to demonstrate the performance of the proposed algorithm. Since the model for the nonlinear TCR element is linear, a linear network solution in harmonic domain is sufficient to obtain the harmonic power flow results. This paper also investigated the impact of high harmonic voltage distortions on the accuracy of the coupled admittance model and the associated harmonic power flow results. An iterative method was proposed to improve the original linear network solution method for cases involving very high amount of harmonic voltage distortions.

关 键 词：电力系统谐波 谐波矩阵 谐波潮流 开关函数 晶闸管控制电抗器 

分 类 号：TM351[电气工程—电机]