谐波源等效模型的计算差异性研究

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (1): 37-43.

谐波源等效模型的计算差异性研究

邵振国, 苏文博, 李兆祥

福州大学电气工程与自动化学院,福建福州 350116

收稿日期:2014-07-28 修回日期:2014-10-02 发布日期:2020-07-02
作者简介:邵振国(1970-),男,江苏南通,博士,教授,研究方向为电能质量、新能源发电运行及电力系统稳定与控制;苏文博(1990-),男,福建泉州,硕士生,研究方向为电能质量。
基金资助:
福建省自然科学基金项目(2012J01203); 福建省科技计划重点项目(2013H0024)

Research on Effect of Harmonic Source Equivalent Model on Harmonic Power Flow

Shao Zhenguo, Su Wenbo, Li Zhaoxiang

Fuzhou University, Fuzhou 350116, China

Received:2014-07-28 Revised:2014-10-02 Published:2020-07-02

摘要/Abstract

摘要： 谐波源模型及参数取值是影响谐波潮流计算精度的主要因素。将谐波源分为线性模块和非线性模块两部分建模,给出了功率源模型、电流源模型及电流源-阻抗组合模型下的谐波计算过程,并结合耦合法、解耦法与线性法分析了不同模型在谐波潮流算法中的应用及对谐波计算结果的影响机理。指出线性负荷模型及其谐波特性差异是影响谐波计算结果的主要因素,这种差异在谐振频率附近的表现最为显著。给出了简单算例验证了分析结论。认为工程计算中应首先根据监测数据分析非线性用户运行特性,选用合适的模型,此后结合多时段、多工况的监测数据辨识模型参数,才能得到合理的谐波潮流计算结果。

关键词: 谐波潮流, 谐波源, 谐波计算模型, 谐振

Abstract: The models and parameters of harmonic source are the main factors that affect the calculation accuracy of harmonic flow. Harmonic source was divided into linear load and non-linear load and then modelled separately. The algorithm flowcharts, coupling method, decouple method and linear method, were analyzed with power source model, current source model and current source-impedance model correspondingly. The frequency response of those models was compared with a simple example. It indicates that the model of linear load and its affect in harmonic frequency are the key factors influencing computational accuracy of harmonic power flow. Then an example of harmonic flow in a 3-bus distributed system was introduced which shows the dramatic difference among the results of harmonic power flow resulting from those models. It suggests that the on-line monitor should be continued long enough to analyze the operating character of harmonic source and choose the model appropriately.

Key words: harmonic flow, harmonic source, harmonic computational model, resonance

中图分类号:

TP391.9

邵振国, 苏文博, 李兆祥. 谐波源等效模型的计算差异性研究[J]. 系统仿真学报, 2016, 28(1): 37-43.

Shao Zhenguo, Su Wenbo, Li Zhaoxiang. Research on Effect of Harmonic Source Equivalent Model on Harmonic Power Flow[J]. Journal of System Simulation, 2016, 28(1): 37-43.

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