Control Design of a Dynamic Voltage Restorer for Wind-Driven Induction Generators during a Low Voltage Fault at Grid Bus

2014 ◽  
Vol 42 (14) ◽  
pp. 1553-1564 ◽  
Author(s):  
Woei-Luen Chen ◽  
Meng-Jie Wang
Keyword(s):  
Low Voltage ◽  
Control Design ◽  
Dynamic Voltage Restorer ◽  
Induction Generators ◽  
Voltage Restorer ◽  
Dynamic Voltage

scholarly journals Voltage disturbance mitigation in Iraq's low voltage distribution system

2020 ◽  
Vol 17 (1) ◽  
pp. 47
Author(s):  
Jamal Abdul-Kareem Mohammed ◽  
Arkan Ahmed Hussein ◽  
Sahar R. Al-Sakini
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Pulse Width Modulation ◽  
Low Voltage ◽  
Distribution Network ◽  
Voltage Source ◽  
Power Distribution Network ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

<p>Power distribution network in Iraq still suffers from significant problems regarding electricity distribution level. The most important problem is the disturbances that are occurring on lines voltages, which in turn, will negatively affect sensitive loads they feed on. Protection of these loads could be achieved efficiently and economically using the dynamic voltage restorer DVR when installed between the voltage source and load to inject required compensation voltage to the network during the disturbances period. The DVR mitigates these disturbances via restoring the load voltage to a pre-fault value within a few milliseconds. To control the DVR work, dq0 transformation concept and PID method with sinusoidal pulse-width modulation SPWM based converter had been used to correct the disturbances and thus enhance the power quality of the distribution network. The DVR performance was tested by MATLAB/Simulink with all kinds of expected voltage disturbances and results investigated the effectiveness of the proposed method.</p>

Efficient Approach to LVRT Capability of DFIG-Based Wind Turbines under Symmetrical and Asymmetrical Voltage Dips Using Dynamic Voltage Restorer

2017 ◽  
Vol 8 (2) ◽  
pp. 945 ◽  
Author(s):  
Kiarash Azizi ◽  
Murtaza Farsadi ◽  
Mohammad Farhadi Kangarlu
Keyword(s):  
Wind Turbines ◽  
Low Voltage ◽  
Normal Operation ◽  
Dynamic Voltage Restorer ◽  
Volume Weight ◽  
Voltage Restorer ◽  
Voltage Dips ◽  
Dynamic Voltage ◽  
In Series ◽  
Grid Side

<span>The capability of low-voltage ride-through (LVRT) of doubly fed induction generator (DFIG) has been considered as an essence for grid code requirements. Any unbalance on the grid side causes the rotor current of the generator to rise which leads to saturate the dc-link of the back-to-back converter or even destroy it. To meet this requirement, a dynamic voltage restorer (DVR) without dc-link energy storage elements is utilized to compensate any disturbance imposed to the DFIG wind turbine system. On the time of any disturbance or fault, DFIG and DVR are properly controlled in order to compensate the specified faulty phase uninterruptedly. DVR is connected in series to the grid and by injecting instantaneous compensating voltage, prevents the stator voltage from rapid changing; consequently, the rotor side converter can accomplish its normal operation. As voltage dips are the most common grid faults subjected to DFIGs, this paper investigates both symmetrical and asymmetrical voltage dips caused by grid faults. The independent and instantaneous phase voltage compensation, less volume, weight, and cost are the merits to utilize the proposed DVR along with DFIG wind turbines. PSCAD/EMTDC based simulations verifies the capabilities of the proposed technique for the LVRT capability of DFIG.</span>

Application of Dynamic Voltage Restorer for Power Quality Improvement in Low Voltage Electrical Power Distribution Network: An Overview

2017 ◽  
Vol 28 ◽  
pp. 142-156 ◽  
Author(s):  
Patrick Taiwo Ogunboyo ◽  
Remy Tiako ◽  
Innocent E. Davidson
Keyword(s):  
Power Quality ◽  
Power Distribution ◽  
Low Voltage ◽  
Electrical Power ◽  
Distribution Network ◽  
Power Distribution Network ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Power Quality Improvement ◽  
Dynamic Voltage

Dynamic Voltage Restorer (DVR) is a series connected power electronics based custom power device that is used to improve voltage disturbances in low voltage electrical power distribution network. Power quality requirement is one of the most important concerns for power system. The parts of the DVR is made up of voltage source inverter, injection/booster transformer, a harmonic filter, an energy storage device and a bypass switch. The DVR is used to inject three phase voltage in series and in synchronism with the network voltages in order to compensate voltage disturbances with a benefit of active /reactive power control. This paper presents a review of the researches on the dynamic voltage restorer application for power quality improvement in low voltage electrical power distribution networks. It describes power quality issues, principle of operation of DVR, basic components of DVR, DVRs control topologies in distribution network, DVR control strategies and compensation techniques.

scholarly journals Application of Dynamic Voltage Restorer for Enhancing low voltage Ride-through capability of Doubly Fed Induction Generator

2020 ◽  
Vol 10 (1) ◽  
pp. 32-35
Keyword(s):  
Low Voltage ◽  
Energy System ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Dynamic Voltage Restorer ◽  
Low Voltage Ride Through ◽  
Voltage Restorer ◽  
Wind Energy System ◽  
Dynamic Voltage ◽  
Doubly Fed

Doubly Fed Induction Generator (DFIG) based wind Energy System are very sensitive to grid disturbance such as Symmetrical voltage sag. In this paper the authors propose a new method for application of Dynamic Voltage Restorer for enhancing the low voltage ride through capability of wind turbine driven Doubly Fed Induction Generator.

Voltage Drop Mitigation in Smart Distribution Network

2020 ◽  
pp. 64-77
Author(s):  
Fsaha Mebrahtu
Keyword(s):  
Low Voltage ◽  
Voltage Drop ◽  
Distribution Network ◽  
Economic Damage ◽  
Dynamic Voltage Restorer ◽  
Voltage Dip ◽  
Voltage Restorer ◽  
Clearing Time ◽  
Dynamic Voltage ◽  
Smart Distribution Network

Voltage dip in the distribution network is caused by disturbance at different voltage levels and experienced by low voltage customers are established. Voltage dips are those disturbances which damage the power quality of the distribution network and causing heavy economic damage to the customers. This chapter investigates procedures of mitigating the voltage dip by reducing the number of faults due to short circuits, lowering the fault clearing time, and changing the power system design and DSTATCOM Compensator with DG and dynamic voltage restorer.

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