Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags

2008 ◽  
Author(s):  
M.F. Faisal ◽  
A. Mohamed
Keyword(s):  
Voltage Sags ◽  
Phase Voltage ◽  
Mother Wavelet

A Novel Algorithm for Characterizing Measured Three-Phase Voltage Sags

2012 ◽  
Author(s):  
Jairo Blanco Solano ◽  
Jorge Luis Jagua ◽  
Johann F. Petit Suarez ◽  
Gabriel Ordonez Plata ◽  
Victor Barrera Nunez
Keyword(s):  
Voltage Sags ◽  
Phase Voltage ◽  
Three Phase ◽  
Novel Algorithm

A Generalized Parameter Tuning Method of Proportional-Resonant Controllers for Dynamic Voltage Restorers

2018 ◽  
Vol 9 (4) ◽  
pp. 1709
Author(s):  
Phuong Vu ◽  
Ngoc Dinh ◽  
Nam Hoang ◽  
Quan Nguyen ◽  
Dich Nguyen ◽  
...  
Keyword(s):  
Power Systems ◽  
Design Method ◽  
Parameter Tuning ◽  
Voltage Source ◽  
Voltage Sags ◽  
Phase Voltage ◽  
Dynamic Voltage Restorer ◽  
Tuning Method ◽  
Double Phase ◽  
Dynamic Voltage

<span lang="EN-US">Temporary voltage swells and sags appear with high frequency in electric power systems, and they significantly affect sensitive loads such as industrial manufacturing or communication devices. This paper presents a strategy to design proportional-resonant controllers for three full-bridge voltage-source converters with a common DC-link in dynamic voltage restorer systems. The proposed controllers allow the system to quickly overcome temporary unbalanced voltage sags. Simulation results carried out in MATLAB/Simulink and experimental results implemented in a Typhoon HIL402 device demonstrate the ability of the proposed design method. The results show that the system with the proposed controllers can ride-through single-phase or double-phase voltage sags up to 55% and three-phase voltage sags up to 70% in a duration less than one grid-voltage cycle.</span>

Study on the Characteristic of Sensitive Load under Voltage Sags

2013 ◽  
Vol 418 ◽  
pp. 269-272
Author(s):  
Rong Hui Liu ◽  
Ai Qang Pan ◽  
Hai Bo Wang ◽  
Xiu Yang
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Voltage Sensitivity ◽  
Voltage Sags ◽  
Phase Voltage ◽  
Three Phase ◽  
Simulation Results

In this paper, the characteristics of AC/DC converter under single-phase voltage sags and three-phase voltage sags are simulated with Matlab emulator. The simulation results show that effects on rectifier equipment under three-phase voltage sags are more serious than those under single-phase voltage sags. The flat wave capacitance plays an important role in voltage sensitivity of sensitive loads. In practice, the capacitance of flat wave capacitor is chosen according to the power supply and load requirements so as to realize the best balance of performance and price.

Characterizing Voltage Sags and Swells Using Three-Phase Voltage Ellipse Parameters

2015 ◽  
Vol 51 (4) ◽  
pp. 2780-2790 ◽  
Author(s):  
Mollah Rezaul Alam ◽  
K. M. Muttaqi ◽  
Abdesselam Bouzerdoum
Keyword(s):  
Voltage Sags ◽  
Phase Voltage ◽  
Three Phase

Experimental Investigation of the Response of Different PLL Algorithms to Grid Disturbances

2016 ◽  
Vol 856 ◽  
pp. 291-296 ◽  
Author(s):  
Georgios E. Kampitsis ◽  
Anastasis P. Tsoumanis ◽  
Konstantinos C. Gallos ◽  
Stavros A. Papathanassiou ◽  
Stefanos N. Manias
Keyword(s):  
Experimental Investigation ◽  
Reference Frame ◽  
Discrete Time ◽  
Harmonic Distortion ◽  
Digital Controller ◽  
Voltage Sags ◽  
Phase Voltage ◽  
Synchronous Reference Frame ◽  
Three Phase ◽  
Grid Codes

In this paper, the performance of three different phase locked loop (PLL) algorithms is experimentally evaluated in a grid connected photovoltaic inverter. Robust PLL is a key requirement for ensuring system compatibility with existing grid codes. The double second order generalized integrator (DSOGI) and the decoupled double synchronous reference frame (DDSRF) PLL are compared against the conventional synchronous reference frame (SRF) PLL under grid disturbances. All synchronization algorithms are initially simulated in Matlab and subsequently transformed in discrete time for implementation in the digital controller. Grid distortions, such as phase voltage sags, frequency fluctuations and voltage harmonic distortion are emulated via a controllable three phase generator.

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