IEC闪变仪误差分析及改进设计  

Error Analyzing of IEC Flickermeter and Its Improving Design

作　　者：贾秀芳[1] 赵成勇[1] 胥国毅[1] 李庚银[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,保定071003

出　　处：《电工技术学报》2006年第11期121-126,共6页Transactions of China Electrotechnical Society

基　　金：高等学校博士学科专项科点研基金资助项目(20040079002)

摘　　要：针对当前闪变仪存在的问题,提出了若干改进。首先根据IEC给出的不同频率下电压波动值,仿真测试了闪变仪系统误差,通过多项式拟合,实现误差的解析表达,并对闪变仪输出的瞬时闪变视感度S(t)进行校正。其次通过在LabVIEW软件中调用Matlab节点函数,实现了闪变仪数字滤波器系数自动跟踪不同的采样频率。在LabVIEW平台下进行的仿真实验,验证了改进方法的可行性,同时通过RTDS实验证实了所设计的闪变仪具有采样频率灵活、测量准确等特点。Some improving methods are proposed based on existing problem of flickermeter. Firstly, the system error of flickermeter is tested by the simulation under voltage fluctuation with different frequencies. The error expression is obtained by polynomial fit. The instantaneous flicker sensation level S（t） is corrected by the mean of correction curve. Then, by calling function module of Matlab in LabVIEW, parameters of digital filter can be changed along with different sampling frequencies. Finally, the results of simulation experiment show that the improved methods for design of flikermeter are feasible in LabVIEW, and the results of RTDS also indicate that the designed flikermeter possesses some characteristics such as flexibility of sample frequency, high accuracy of measurement, etc.

关 键 词：闪变 闪变仪 电压波动 电能质量 

分 类 号：TM715[电气工程—电力系统及自动化]