一种利用虚拟仪器建立的电压闪变监测方法

Method of monitoring voltage flicker by virtual instrument

为了实现对电压闪变的监测,以减少其对人们工作、生活的影响,根据虚拟仪器的设计思想,按照国际电工委员会(IEC)制定的闪变仪的测试功能和设计规范,给出了IEC数字式闪变仪各个环节数字滤波器的传递函数和运算结构,在LabVIEW环境下建立了闪变仪的模型,根据标准调整了各个模块环节的参数,对电压数字信号进行了分析处理,得到了电压瞬时闪变视感度,将计算结果与标准值进行了比较验证,仿真实验证实了利用虚拟仪器监测闪变的可行性。

To reduce the affect of voltage flicker on people＇s work and lives, monitoring the voltage flicker is required. Transfer function and operation structure are obtained from the International Eleetrotechnical Commission （IEC） testing and design specifications of the flicker meter using virtual instrument technology. By establishing the model of the flicker meter in the LabVIEW environment, adjusting the parameters of every module and analyzing the voltage digital signal, instantaneous flicker sensation level are acquired and compared with the certified value. Simulation experiments verify the feasibility of this method.