This paper analyses the cause of error in the measurement of RMS and active power in non-sinusoidal periodic signals and the magnitude of the error, establishes the mathematical models, and proposes some methods of reducing the error by simulation.

• 非正弦周期信号测量同步误差研究分析了软件实现同步采样在非正弦信号有效值和有功功率测量中产生测量方法误差的原因、差的大小，建立了误差分析的数学模型,并进行了仿真计算，提出了消除或减小测量方法误差的措施。