重庆大学学报2017，Vol.40Issue(6)：47-53,7.DOI:10.11835/j.issn.1000-582X.2017.06.006
一种改进的静止无功补偿系统设计
Design of an improved static var compensation system
摘要
Abstract
In this paper,based on the principle of static var generator,the positive and negative components of phase are first phase locked respectively combined with symmetrical component method in the d-q coordinate system,and then the active current and reactive value of load current in the positive and negative sequence are calculated.So we can avoid the phase-locked angle error caused by asymmetrical three-phase voltages through traditional phase locked loop technology.Then the DC signal is extracted using integral filtering method instead of the traditional low-pass filter.When the system of three-phase is asymmetry,each current of phase is simplified then processed by integral filter,which reduces the inherent delay in the traditional system.Finally,an improved reactive power compensation system simulation model is set up in the MATLAB environment.From a series of simulations of fundamental current extraction and reactive power compensation,we can see that the improved SVG can realize the real-time detection of reactive current:the system detection delay is less than 0.02 s and reduced by 60％ compared with the traditional detection model.The power factor of the original system can be increased to more than 95 ％ after adding the static var compensation system in a power cycle.关键词
无功电流/改进锁相环/MATLAB仿真/功率因数Key words
reactive current/improved phase locked loop/MATLAB simulation/power factor分类
信息技术与安全科学引用本文复制引用
姜建国,王梦谦..一种改进的静止无功补偿系统设计[J].重庆大学学报,2017,40(6):47-53,7.基金项目
黑龙江省自然科学基金资助项目(E2016013).Supported by Natural Science Foundation of Helongjiang Province(E2016013). （E2016013）
