随着电力行业的发展，电能计量的准确度和可靠性越来越引起人们的重视。本课题以NI公司的LabVIEW为计算机语言和开发环境，通过设计合适的算法完成虚拟功率表。-With the development of electric power industry, more and more people pay attention to the accuracy and reliability of electric power measurement. In this paper, the LabVI