電壓暫降、暫升、中斷和電壓諧波是目前電壓質(zhì)量的主要問(wèn)題，對(duì)于這些問(wèn)題的抑制與治理，檢測(cè)是關(guān)鍵。本文提出了一種只基于滑動(dòng)積分器的方法，通過(guò)一些簡(jiǎn)單的計(jì)算和一些簡(jiǎn)單的判斷，可以以較高的精度快速的檢測(cè)出任意時(shí)刻發(fā)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(cè)方法相比，該方法無(wú)需添加低通濾波器，無(wú)需進(jìn)行任何變換，具有算法簡(jiǎn)單、容易實(shí)現(xiàn)，運(yùn)算速度快，精度高等優(yōu)點(diǎn)。仿真分析驗(yàn)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(guān)鍵詞： 電壓故障；滑動(dòng)積分器；檢測(cè)方法
KEY WORDS: voltage fault; sliding integrator; detecting technology