基于滑动积分器的电压故障检测

电压暂降、暂升、中断和电压谐波是目前电压质量的主要问题，对于这些问题的抑制与治理，检测是关键。本文提出了一种只基于滑动积分器的方法，通过一些简单的计算和一些简单的判断，可以以较高的精度快速的检测出任意时刻发生的电压暂降、暂升、中断的基波幅值、相位和电压谐波。与其他的检测方法相比，该方法无需添加低通滤波器，无需进行任何变换，具有算法简单、容易实现，运算速度快，精度高等优点。仿真分析验证了该方法的正确性。
ABSTRACT: Voltage sag, swell, interruption and harmonic are the main problems of power quality, in order to suppress and resolve these problems, detecting technology is the key point. In this paper, a new method is presented,which is based on the sliding integrator. For any moment of voltage sag, swell and interruption, this method can rapidly detect the fundamental amplitude, phase and voltage harmonics through some simple calculations and some simple judgements. Compared with other detection methods, this approach need not use low-pass filter and any transformation, and this method also has the advantages of easiness in implementation and high speed, high accuracy in detection. Simulation results prove that the proposed method is correct.
关键词： 电压故障；滑动积分器；检测方法
KEY WORDS: voltage fault; sliding integrator; detecting technology