基于SRF‑PLL的模糊自适应软件锁相方法研究  

Research on fuzzy adaptive software phase‑locking method based on SRF‑PLL

作　　者：肖雄 谭炳源 姚栋方 陈崇明 吴瀛 郭江[2] XIAO Xiong;TAN Bingyuan;YAO Dongfang;CHEN Chongming;WU Ying;GUO Jiang(Maintenance&Test Center of EHV Power Transmission Company,China Southern Power Grid Co.,Ltd.,Guangzhou 510700,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司检修试验中心,广东广州510700 [2]武汉大学动力与机械学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2024年第7期988-996,共9页Engineering Journal of Wuhan University

基　　金：国家重点研发计划项目(编号:2020YFB1709704)。

摘　　要：软件锁相法是电网基波测量中的一项重要工程技术。针对传统锁相环成本较高、结构复杂、动态性能不佳及鲁棒性差等问题,系统分析了三相同步锁相环(synchronous reference frame phase-locked loop,SRF-PLL)的基本原理,提出了一种基于SRF-PLL结构的模糊自适应软件锁相方法,并进行了仿真研究,给出了基于嵌入式微控制器的算法实现,进行了硬件联调试验。与传统SRF-PLL结构锁相环相比,该方法属于全软件算法,运行稳定,对非线性系统参数变化具有较好的适应性,且具有较好的动态性能和鲁棒性,其调节原理简单,易于模块化移植,在电能计量等工程领域有较好的应用前景。Software phase-locking method is an important engineering technique in fundamental wave measure⁃ment of power grid.Aiming at the problems of high cost,complex structure,poor dynamic performance and poor robustness of traditional phase-locked loop,the basic principle of synchronous reference frame phaselocked loop(SRF-PLL)is systematic analyzed,and a fuzzy adaptive software phase-locking method based on the structure of SRF-PLL structure is proposed.The simulation research is carried out,the algorithm implemen⁃tation based on the embedded microcontroller is given,and the hardware joint adjustment test is proceeded.Compared with the traditional SRF-PLL structure phase-locked loop,this method belongs to the whole soft⁃ware algorithm,which runs stably and has not only better adaptability to nonlinear system parameter changes but also better dynamic performance and robustness.The adjustment principle is simple,easy to modularize and transplant,so it has a good application prospect in electric energy metering and other engineering fields.

关 键 词：基波测量 软件锁相环 三相同步坐标系 模糊控制 

分 类 号：TM743[电气工程—电力系统及自动化]