直流合并单元的实时测频方法  

Real time frequency measurement method for DC merging unit

作　　者：王猛 张敏[1,2,3] 卢俊 沈健[1,2,3] Wang Meng;Zhang Min;Lu Jun;Shen Jian(NARI Group Corporation (State Grid Electric Power Research Institute),Nanjing 211106;NARI Technology Co.,Ltd,Nanjing 211106;State Key Laboratory of Smart Grid Protection and Control,Nanjing 211106)

机构地区：[1]南瑞集团(国网电力科学研究院)有限公司,南京211106 [2]国电南瑞科技股份有限公司,南京211106 [3]智能电网保护和运行控制国家重点实验室,南京211106

出　　处：《电气技术》2019年第8期99-102,共4页Electrical Engineering

摘　　要：针对直流合并单元对输入信号谐波频率测量的实时性和精确性要求,本文深入分析了现有定间隔采样测频算法的基本原理,阐明了定间隔采样测频算法的局限性。在此基础上提出了一种改算方法,克服了现有算法不具备实时性的缺陷,并在直流合并单元装置上进行了实验验证。According to the real-time and accuracy requirements of the signal harmonic frequency measurement,this article analyzed the basic principles of the fixed interval sampling frequency measurement algorithm,and clarified the limitation of fixed interval sampling frequency measurement algorithem.Then,this paper proposd an improved method to solve the real-time disadvantage of existing algorithms.Finally,the implementation is verified on the DC merging unit.

关 键 词：同步相量 直流合并单元 定间隔采样 

分 类 号：TM935[电气工程—电力电子与电力传动]