应用于新能源场站的链式STATCOM锁相环设计  

Design of Cascade STATCOM PLL Applied in New Energy Station

作　　者：陈杰 王贵海 朱曙荣 郭志超 CHEN Jie;WANG Guihai;ZHU Shurong;GUO Zhichao(Beijing Electric Power Automation Equipment Co.,Ltd,Beijing 100044,China;China Energy Engineering Group Equipment Co.,Ltd,Beijing 100044,China)

机构地区：[1]北京电力自动化设备有限公司,北京100044 [2]中国能建集团装备有限公司,北京100044

出　　处：《电力勘测设计》2022年第9期53-58,共6页Electric Power Survey & Design

摘　　要：随着我国“3060”双碳目标的部署,新能源装机容量的不断加大,多种电力电子设备接入后相互作用复杂,系统振荡问题突显。基于同步参考坐标系的锁相环在电网电压不对称或电压畸变复杂工况下锁相失败的原理,对此在分析阶段采用基于正序带通滤波器的锁相环,在αβ坐标系下直接提取出基波正序分量,消除基波负序分量和谐波分量对锁相环性能的影响,并通过数字仿真验证该方法的有效性。With the deployment of China’s 3060 carbon peak and carbon neutralization strategic goal.With the increasing installed capacity of new energy,the interaction of multiple power electronic devices is complex,and the problem of system oscillation is highlighted.This paper analyzes the principle of phase-locked failure of Synchronous Reference Frame Phase-Locked Loop(SRF-PLL)under the complex conditions of grid voltage asymmetry or voltage distortion.In this design,phase-locked loop based on positive sequence band-pass filter(PSBF)is used to extract the fundamental positive sequence component directly inαβcoordinate system,The influence of fundamental negative sequence component and harmonic component on PLL performance is eliminated,and the effectiveness of the method is verified by digital simulation.

关 键 词：新能源 STATCOM 软件锁相环 

分 类 号：TU74[建筑科学—建筑技术科学]