计及谐波信号的光伏发电功率控制方法研究  

Research on the power control method of photovoltaic power generation considering harmonic signal

作　　者：严晗 徐晓春 汤同峰 周鑫 刘航宇 YAN Han;XU Xiaochun;TANG Tongfeng;ZHOU Xin;LIU Hangyu(Huaian Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Huaian 223002,China)

机构地区：[1]国网江苏省电力有限公司淮安供电分公司,江苏淮安223002

出　　处：《电子设计工程》2024年第19期178-181,共4页Electronic Design Engineering

基　　金：国网江苏省电力有限公司科技项目(J2022054)。

摘　　要：针对光伏发电功率波动大,无法满足稳定电量供给需求的问题,提出了计及谐波信号的光伏发电功率控制方法。根据K因子取值范围,计算了谐波损耗量与附加损耗量,分析了光伏发电设备的谐波信号影响。考虑谐波信号的影响,确定了光伏发电功率特性,联合等效负荷参数,求解AGC参数,实现对光伏发电功率的控制。对比实验结果表明,所提方法的功率平稳波段的持续时间延长了23 min,并能够有效抑制功率波动,其极大值与极小值之间的数值差仅为77 W,满足稳定电量供给的实际应用需求。In response to the issue of large fluctuations in photovoltaic power generation,which cannot meet the demand for stable electricity supply,a photovoltaic power generation power control method taking into account harmonic signals is proposed.According to the value range of factor K,the harmonic loss and additional loss were calculated,and the impact of harmonic signals on photovoltaic power generation equipment was analyzed.Considering the influence of harmonic signals,the power characteristics of photovoltaic power generation were determined,combine the equivalent load parameters,solve the AGC parameters,and realize the control of photovoltaic power generation.The comparative experimental results show that the duration of the power stable band of the proposed method has been extended by 23 minutes and can effectively suppress power fluctuations.The numerical difference between the maximum and minimum values is only 77 W,which meets the practical application needs of stable power supply.

关 键 词：谐波信号 光伏发电 功率控制 K因子 谐波损耗 

分 类 号：TN929.5[电子电信—通信与信息系统]