Backward/Forward sweep-based harmonic analysis method for distribution systems
Backward/Forward sweep-based harmonic analysis method for distribution systems
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DOI：
10.1109/tpwrd.2007.899523
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发表时间：
2007-07-01
影响因子：
4.4
通讯作者：
Chang, Chuo-Yean
中科院分区：
文献类型：
--
作者：
Teng, Jen-Hao;Chang, Chuo-Yean
提出了一种适用于三相辐射状配电网的快速谐波分析方法。所提出的方法是基于精确的三相分量模型，频率扫描配方，和一个常用的前向/后向扫描技术。后向扫描用于建立配电系统的分支电流和母线电流注入之间的关系，然后前向扫描可以使用上述关系来计算母线电压。前向/后向扫描技术是一种强大的方法，已被广泛应用于配电系统的分析，但它不能直接用于谐波分析。为此，该方法设计了一些特定的数据格式，并将其与常用的前向/后向扫描技术相结合，推导出了计算谐波污染对系统状态影响的实用公式。该方法不需要对导纳矩阵进行求逆运算，因而比传统的谐波分析方法效率更高。实验结果证明了该方法的准确性和有效性。
A fast harmonic analysis method designed for three-phase radial distribution systems is proposed in this paper. The proposed method is developed based on the exact three-phase component models, frequency-scan formulation, and a commonly used forward/backward sweep technique. The backward sweep is used to build the relationship between branch currents and bus current injections of a distribution system, and then the forward sweep can use the aforementioned relationship to calculate bus voltages. The forward/backward sweep technique is a powerful method and has been widely used in distribution system analysis; however, it cannot be used for harmonic analysis directly. Therefore, the proposed method designs some specific data formats, integrates them into the commonly used forward/backward sweep technique, and derives useful formulas to calculate the effects of system status induced by harmonic pollution. The proposed method is more efficient than the conventional harmonic analysis algorithms since the time-consuming procedure of the admittance matrix inverse is not necessary in the solution procedure. Test results demonstrate the accuracy and efficiency of the proposed method.