基于虚拟旋转坐标系的瞬时功率因数检测及补偿方法  

Instantaneous Power Factor Detection and Compensation Method Based on Virtual Rotating Coordinate System

作　　者：芦浩 章军华 姜瑶瑶 粟忠来 LU Hao;ZHANG Junhua;JIANG Yaoyao;SU Zhonglai(State Grid Zhejiang Chun'an Power Supply Co.,Ltd.,Chun′an Zhejiang 311700,China;Chun'an Electric Power Industry Co.,Ltd.,Chun'an Zhejiang 311700,China;XJ Group Corporation,Xuchang Henan 461000,China)

机构地区：[1]国网浙江淳安县供电有限公司,浙江淳安311700 [2]淳安县电力实业有限公司,浙江淳安311700 [3]许继集团有限公司,河南许昌461000

出　　处：《浙江电力》2021年第9期47-54,共8页Zhejiang Electric Power

基　　金：国家自然科学基金项目(51507138)。

摘　　要：在分析传统无功功率检测及补偿方法的原理及不足的基础上,提出一种基于虚拟旋转坐标系的瞬时功率因数检测及补偿方法,并对该方法的性能和应用场合进行分析。该方法无需电压锁相即可实现瞬时功率因数的实时检测,克服了电压畸变以及电压锁相精度低引起的检测精度降低及检测延时的问题;同时该方法引入恒定功率因数补偿环节,解决了电力系统功率因数实时变化的问题。最后,通过仿真模型和工程应用实例验证了所提方法的正确性和可行性。By analyzing the principle and disadvantages of the traditional reactive power detection and compensation method,the paper introduces an instantaneous power factor detection and compensation method based on a virtual rotating coordinate system and analyzes the performance of the method and application scenarios.Detecting instantaneous power factors in real time without phase lock,the method overcomes detection accuracy reduction and detection time delay due to voltage distortion and poor voltage phase lock.Meanwhile,it introduces constant power factor compensation and therefore solves the problem of real-time change of power factor in power system.Finally,the correctness and feasibility of the method are verified by a simulation model and engineering application.

关 键 词：虚拟旋转坐标系 瞬时功率因数 恒定功率因数补偿 

分 类 号：TM714[电气工程—电力系统及自动化]