基于虚拟仪器和S变换的暂态电能质量实时监测系统  

Real-time Monitoring System for Transient Power Quality Based on Virtual Instrument and Stockwell Transform

作　　者：田卫华[1] 孟祥斌[1] 庞新富[1] 于宏涛[1] 包妍[1] 

机构地区：[1]沈阳工程学院自动化学院,辽宁沈阳110136

出　　处：《仪表技术与传感器》2016年第8期60-62,70,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金重点项目(51435009);中国博士后科学基金特别资助项目(2015T80798);辽宁省教育厅科技项目(L2014530;L2014517;L2015372)

摘　　要：针对电能质量实时监测的问题,提出了一种利用S变换算法检测和分析电力系统暂态电能质量的方法,并基于虚拟仪器技术研制了一套暂态电能质量实时监测与分析系统。该系统可实时监测电能质量信号并能进行在线和离线分析,能够对扰动信号进行准确的定位和分析。最后,通过实验系统产生暂态扰动信号,对本系统的性能进行测试。实验分析结果表明:该系统具有良好的实时性和准确性,能够为电力系统的实时故障分析提供可靠的依据。A method using Stockwell transform algorithm to detect and analyze transient power quality in power system in real-time was proposed.The virtual instrument was used for designing a system of real-time analyzing transient power quality.The system can real-time monitor power quality and proceed online and offline analysis and can accurately locate and analyze.Finally,transient disturbing signals generated by the experiment system are used for testing the system.The results demonstrate the real-time performance and accuracy of the system and can provide reliable basis for real-time fault analysis of power system.

关 键 词：电能质量 暂态扰动 S变换 实时监测 虚拟仪器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]