基于滑動積分器的電壓故障檢測

電壓暫降、暫升、中斷和電壓諧波是目前電壓質量的主要問題，對于這些問題的抑制與治理，檢測是關鍵。本文提出了一種只基于滑動積分器的方法，通過一些簡單的計算和一些簡單的判斷，可以以較高的精度快速的檢測出任意時刻發生的電壓暫降、暫升、中斷的基波幅值、相位和電壓諧波。與其他的檢測方法相比，該方法無需添加低通濾波器，無需進行任何變換，具有算法簡單、容易實現，運算速度快，精度高等優點。仿真分析驗證了該方法的正確性。
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.
關鍵詞： 電壓故障；滑動積分器；檢測方法
KEY WORDS: voltage fault; sliding integrator; detecting technology