检测电压暂降特征量的有效值算法  

Detection Method of Voltage Sags Characterizations Using RMS Algorithm

作　　者：王效孟[1] 周勇[1] 刘继承 林烽[3] 

机构地区：[1]郑州大学电气工程学院,河南郑州450001 [2]河南恩湃电力技术有限公司,河南郑州450016 [3]河南电力试验研究院,河南郑州450052

出　　处：《低压电器》2010年第10期48-51,共4页Low Voltage Apparatus

摘　　要：在简述电压暂降的基本概念、特征量和起因的基础上,介绍了采用有效值算法获取电压暂降特征量的方法,提供了完整的软件处理流程。通过Matlab仿真,验证了全周期有效值算法和半周期有效值算法的有效性,得出了电压暂降起始时刻和终止时刻的延时误差变化曲线。在对起止时刻精度有较高要求的场合,可以利用该曲线进行误差修正,进而得到更为准确的电压暂降持续时间。According to the basic concepts,characteristics and causes of voltage sags,a root-mean-square（RMS） algorithm method to obtain the characteristics of voltage sags was introduced and a complete software process flow was provided.Through the Matlab simulation,the full-cycle RMS algorithm and the half-cycle RMS al-gorithm were proved and the delay error curve of the start time and end time of voltage sags was obtained.On the occasion for higher precision demand of start-stop time measurement,a more accurate voltage sags duration could be obtained after the error correction by the curve.

关 键 词：电压暂降 检测方法 有效值算法 

分 类 号：TM835[电气工程—高电压与绝缘技术]