Voltage Sag Detection Method Considering both Speed and Anti-Interference Ability

doi:10.16628/j.cnki.2095-8188.2023.02.012

Abstract

Abstract:

Based on the comparison of various voltage sag detection methods,the voltage sag detection method that takes into account the speed and anti-interference ability is proposed.The sliding window is used to calculate the effective value of 1/4 cycle of single-phase voltage.Simultaneously the effective value of single-phase voltage is calculated in real time according to the phase locked out by digital phase-locked loop.The simulation and actual test show that the proposed method has clear physical meaning,simple calculation,good real-time performance and strong anti-interference ability.The requirements of dynamic voltage regulator for speed and anti-interference ability are taken into account.It can be well applied to engineering practice where only voltage amplitude sag detection is required.

Key words: voltage sag, 1/4 cycle effective value algorithm, digital phase-locked loop, dynamic voltage regulator(DVR)

CLC Number:

TM761

HUANG Liejiang, CHEN Sichao, SHEN Dilong, PAN Yuanjun, LIANG Yiqiao, ZHANG Chi, JIN Lei. Voltage Sag Detection Method Considering both Speed and Anti-Interference Ability[J]. LOW VOLTAGE APPARATUS, 2023, 0(2): 63-67.

Figures/Tables 10

References 13

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