基于DSOGI-PLL与ANF-LPF的i_(p)-i_(q)三相谐波检测方法  

Method of three⁃phase i_(p)-i_(q) harmonic detection based on DSOGI⁃PLL and ANF⁃LPF

作　　者：马玉立 原浩 陈良亮 赵阳[3] MA Yuli;YUAN Hao;CHEN Liangliang;ZHAO Yang(State Grid NARI-tech Control System Co.,Ltd.,Nanjing 210000,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 210000,China;School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210000,China)

机构地区：[1]国电南瑞南京控制系统有限公司,江苏南京210000 [2]南瑞集团(国网电力科学研究院)有限公司,江苏南京210000 [3]南京师范大学电气与自动化工程学院,江苏南京210000

出　　处：《现代电子技术》2024年第8期121-125,共5页Modern Electronics Technique

基　　金：国电南瑞南京控制系统有限公司科技项目:面向新能源汽车下乡应用需求的光储充一体化设备研制及运行监控平台开发。

摘　　要：随着分布式电源大规模接入电网,电力系统中频率波动、电压不平衡以及谐波畸变等问题日益严重。在这样不平衡和失真的电网条件下,传统i_(p)-i_(q)谐波检测法已不能满足工程需要。为解决这一问题,文中提出一种基于DSOGI-PLL与ANF-LPF的i_(p)-i_(q)三相谐波检测方法。一方面,采用DSOGI-PLL提高复杂电网下提取基波相位的能力;另一方面,采用一种具有选择性谐波滤波能力的改进结构LPF,来提高谐波检测的抗干扰能力。结果表明,所提方法能够在复杂电网条件下完成三相谐波检测。With the large-scale integration of distributed power sources into the power grid,problems such as frequency fluctuations,voltage imbalance,and harmonic distortion in the power system are becoming increasingly serious.Under such unbalanced and distorted power grid conditions,traditional i_(p)-i_(q) harmonic detection methods can no longer meet engineering needs.To address this issue,a three-phase i_(p)-i_(q) harmonic detection method based on DSOGI-PLL and ANF-LPF is proposed.On the one hand,DSOGI-PLL is used to improve the ability to extract fundamental phase in complex power grids.On the other hand,an improved structure LPF with selective harmonic filtering capability is used to enhance the anti-interference ability of harmonic detection.The results show that the proposed method can achieve three-phase harmonic detection under complex power grid conditions.

关 键 词：双二阶广义积分器 谐波检测 陷波器 低通滤波器 锁相环 瞬时无功理论 IP-IQ 基波电流 

分 类 号：TN713-34[电子电信—电路与系统]