低压配电线路谐波电阻损耗模型参数辨识及实验验证  

Parameter Identification and Experimental Verification of Harmonic Resistance Loss Model in Low-voltage Distribution Lines

作　　者：王毅 刘书铭 李琼林 代双寅 陶雄飞[2] 郑永乐 WANG Yi;LIU Shuming;LI Qionglin;DAI Shuangyin;TAO Xiongfei;ZHENG Yongle(State Grid Henan Electric Power Company Electric Power Research Institute,Zhengzhou 450000,Henan Province,China;School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430072,Hubei Province,China;State Grid Henan Electric Power Company Economic and Technical Research Institute,Zhengzhou 450000,Henan Province,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南省郑州市450000 [2]华中科技大学光学与电子信息学院,湖北省武汉市430072 [3]国网河南省电力公司经济技术研究院,河南省郑州市450000

出　　处：《电网技术》2021年第4期1480-1486,共7页Power System Technology

基　　金：国家电网公司科技项目(52170217000Q)。

摘　　要：严重的谐波污染导致低压配电线路存在不可忽视的谐波附加损耗。针对线路谐波电阻模型实用性不足以及谐波损耗计算精度不高的问题,考虑集肤效应影响建立低压配电线路谐波损耗分析模型,提出谐波电阻的参数辨识算法;然后采用线路不同含量谐波下的实测运行数据,完成谐波电阻参数辨识,得出线路谐波电阻模型;最后基于电阻负载和智能电子负载下配电线路各次谐波叠加运行工况的实验数据,验证了文中模型的有效性。实验结果表明,该模型相比传统简化模型和不考虑集肤效应模型计算配电线路谐波损耗的精度更高。Serious harmonic pollution leads to ignorable additional harmonic losses in low-voltage distribution lines. In view of the lack of practicability of the line harmonic resistance model and the low accuracy of the harmonic loss calculation, this paper establishes the harmonic loss analysis model of the low-voltage distribution line with the skin effect, and proposes the parameter identification algorithm of the harmonic resistance. Then, the parameters of harmonic resistance are identified by using the measured operation data in harmonic with different contents, and the harmonic resistance model is obtained. Finally, the validity of the model is verified based on the experimental data of the superimposed operation with harmonics under resistance load and intelligent electronic load. The experimental results show that the accuracy for loss calculation of this model is higher than the traditional simplified model and the model without skin effect.

关 键 词：低压配电线路 谐波电阻 损耗模型 参数辨识 

分 类 号：TM721[电气工程—电力系统及自动化]