摘要
为克服随机多谐波源叠加系数计算需同步采样的技术瓶颈,提出一种考虑谐波电流相位分布特征的多谐波源叠加方法。首先,构建多谐波源叠加模型,分析谐波叠加原理及存在问题;其次,分析满足正态分布的相位角特征参数对叠加系数的影响机理,并采用蒙特卡罗法建立标准差与叠加系数的量化关系,提出考虑谐波源个体相位分布特征参数的叠加系数计算方法;最后,通过应用验证,谐波叠加结果计算误差较国标推荐方法降低了80%以上,为多谐波源叠加的工程化应用提供了新方法。
To overcome the technical bottleneck of synchronous sampling required for the calculation of superposition coefficients of random multiple harmonic sources,a multi-harmonic source superposition method considering the phase distribution characteristics of harmonic current is proposed.First,a superposition model of multiple harmonic sources is constructed,and the principle and problems of harmonic current superposition are analyzed.Second,the mechanism of the influence of the phase angle characteristic parameter satisfying normal distribution on the superposition coefficient is analyzed,the quantitative relationship between standard deviation and the superposition coefficient is established usingthe Monte Carlo method,and a method of calculating the superposition coefficientis put forward,which takes into account the individual phase distribution characteristic parameter of harmonic sources.Finally,through the verification based on application data,it is found that the calculation error of harmonic superposition results is reduced by more than 80%compared with the methodrecommended byoneChinese national standard,providing a novel method for the engineering application of multi-harmonic source superposition.
作者
高敏
朱明星
汪清
焦亚东
丁同
GAO Min;ZHU Mingxing;WANG Qing;JIAO Yadong;DING Tong(School of Electrical Engineering and Automation,Anhui University,Hefei 230601,China;New Smart City High-quality Power Supply Joint Laboratory of China Southern Power Grid(Shenzhen Power Supply Co.,Ltd),Shenzhen 518020,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2023年第12期127-133,共7页
Proceedings of the CSU-EPSA
基金
南方电网公司科技项目(090000KK52220014,SZKJXM20220021)。
关键词
谐波叠加
相位分布
特征参数
叠加系数
蒙特卡罗
harmonic superposition
phase distribution
characteristic parameter
superposition coefficient
Monte Carlo
