scholarly journals Power Quality Improvement Using Dynamic Voltage Restorer on Grid-Connected Wind Energy System

2021 ◽  
Vol 23 (5) ◽  
pp. 401-407
Author(s):  
M. Praful Yadav ◽  
P. Sujatha ◽  
P.B. Kumar
Keyword(s):  
Wind Farm ◽  
Renewable Energy Sources ◽  
Wind Farms ◽  
Constant Speed ◽  
Wind System ◽  
Dynamic Voltage Restorer ◽  
Wind Generators ◽  
Fault Ride Through ◽  
Voltage Restorer ◽  
Dynamic Voltage

Reduction of fossil fuels and increasing technology made importance of wind generation as renewable energy sources. With increasing number of wind farms fed to grid increases grid fault issues due to various wind systems disconnected from grid during grid faults. To get better grid operation, wind farms are probable to be carried during disturbance related to grid faults extensively known as fault ride through capability. In proposed system a fault ride through method in wind farm management system connected to grid is investigated in term of critical clearing time. This paper examines the use of dynamic voltage restorer on the enhancement of fixed-speed wind generator systems. The controller capability performance, drive performance, and cost factor are considered. Simulation is performed using MATLAB Simulink for constant speed wind generators with closed-loop controller-based DVR are tested. The constant speed drive called synchronous generator-based wind system feed to an infinite bus system. Simulation results show the wind system with DVR has better fault ride-through capability other compensated voltages and is more efficient in minimizing voltage fluctuations called sag/swell and wind generator’s speed. Additionally, DVR aids wind generators to maintain voltage sag/swell with the grid limits requirements with economical as compared to other voltage compensating systems.

Improving stability of utility-tied wind generators using dynamic voltage restorer

2014 ◽  
Vol 25 (4) ◽  
pp. 71-79 ◽  
Author(s):  
G Sivasankar ◽  
V Suresh Kumar
Keyword(s):  
Wind Power ◽  
Wind Farm ◽  
Short Circuit ◽  
Wind Farms ◽  
System Stability ◽  
Dynamic Voltage Restorer ◽  
Fault Ride Through ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
The Stability

The generation of electricity using wind power is significantly increasing and has received considerable attention in recent years. One important problem with the induction generator based wind farms is that they are vulnerable to voltage disturbances and short circuit faults. Any such disturbance may cause wind farm outages. Since wind power contribution is in considerable percentage, such outages may lead to power system stability issues and also violate the grid code requirements. Thus, improving the reliability of wind farms is essential to maintain the stability of the system. The proposed strategy is to use Dynamic Voltage Restorer (DVR), which is one of the promising devices to compensate the voltage disturbance and to improve the stability of the system. It provides the wind generator with the fault ride through capability and improves the reliability of the system. Extensive simulation results are included to illustrate the operation of DVR and fault compensation.

scholarly journals An Improved Dynamic Voltage Restorer Model for Ensuring Fault Ride-Through Capability of DFIG-based Wind Turbine Systems

2020 ◽  
Vol 19 (1) ◽  
pp. 9-16
Author(s):  
Musayyibi Shuaibu ◽  
Adamu Saidu Abubakar
Keyword(s):  
Electricity Market ◽  
Energy Demand ◽  
Reactive Power ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Test System ◽  
Dynamic Voltage Restorer ◽  
Fault Ride Through ◽  
Voltage Restorer ◽  
Dynamic Voltage

Renewable energy sources (RES) are being integrated to electrical grid to complement the conventional sources in meeting up with global electrical energy demand. Among the RES, Wind Energy Conversion Systems (WECS) have gained global electricity market competitiveness especially the Doubly Fed Induction Generator (DFIG)-based Wind Turbines (WTs) because of flexible regulation of active and reactive power, higher power quality, variable speed operation, four quadrant converter operation and better dynamic performance. Grid connected DFIG-based WTs are prone to disturbances due to faults in the network which made the utilization of the power generated a major concern. The grid code requirement for integrating the DFIGs to grid specified that they must remain connected and support the grid stability during grid disturbances of up to 1500milliseconds. The ability of the DFIG WT system to uphold to the grid codes requirement is termed the Fault Ride – Through (FRT). This paper presented a 1.5MW grid connected DFIG-based WT model with a Dynamic Voltage Restorer (DVR) for FRT capability enhancement. The design and simulation were performed in MATLAB/Simulink software. The test system was subjected to disturbances leading to Low Voltage Ride – Through (LVRT), Zero Voltage Ride – Through (ZVRT) and High Voltage Ride – Through (HVRT) considering three – phase balanced fault and single line to ground fault. The performance of improved model of DVR shows enhancement over conventional DVR in terms of voltage compensation and fault current mitigation.

scholarly journals Improved Fault Ride Through Capability in DFIG Based Wind Turbines Using Dynamic Voltage Restorer With Combined Feed-Forward and Feed-Back Control

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 20494-20503 ◽  
Author(s):  
Rini Ann Jerin Amalorpavaraj ◽  
Palanisamy Kaliannan ◽  
Sanjeevikumar Padmanaban ◽  
Umashankar Subramaniam ◽  
Vigna K. Ramachandaramurthy
Keyword(s):  
Wind Turbines ◽  
Dynamic Voltage Restorer ◽  
Feed Forward ◽  
Fault Ride Through ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Combined Feed

scholarly journals Improving Low Voltage Ride Through Capability of Wind Generators Using Dynamic Voltage Restorer

2014 ◽  
Vol 65 (4) ◽  
pp. 235-241 ◽  
Author(s):  
Gangatharan Sivasankar ◽  
Velu Suresh Kumar
Keyword(s):  
Wind Power ◽  
Wind Farm ◽  
Low Voltage ◽  
Stable Operation ◽  
Dynamic Voltage Restorer ◽  
Wind Power Integration ◽  
Wind Generators ◽  
Voltage Dip ◽  
Voltage Controller ◽  
Dynamic Voltage

Abstract The increasing wind power integration with power grid has forced the situation to improve the reliability of wind generators for stable operation. One important problem with induction generator based wind farm is its low ride through capability to the grid voltage disturbance. Any disturbance such as voltage dip may cause wind farm outages. Since wind power contribution is in predominant percentage, such outages may lead to stability problem. The proposed strategy is to use dynamic voltage controller (DVR) to compensate the voltage disturbance. The DVR provides the wind generator the ability to remain connected in grid and improve the reliability. The voltage dips due to symmetrical and unsymmetrical faults are considered for analysis. The vector control scheme is employed for fault compensation which uses software phase locked loop scheme and park dq0 transformation technique. Extensive simulation results are included to illustrate the control and operation of DVR.

Half Cycle Discrete Transformation for Voltage Sag Improvement in an Islanded Microgrid using Dynamic Voltage Restorer

2018 ◽  
Vol 9 (1) ◽  
pp. 25 ◽  
Author(s):  
N.S. Srivatchan ◽  
P. Rangarajan
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Voltage Sag ◽  
Half Cycle ◽  
Dynamic Voltage Restorer ◽  
Discrete Transformation ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Islanded Microgrid

Growing demand for clean and green power has increased penetration of renewable energy sources into microgrid. Based on the demand supply, microgrid can be operated in grid connected mode and islanded mode. Intermittent nature of renewable energy sources such as solar and wind has lead to number of control challenges in both modes of operation. Especially islanded microgrid throws power quality issues such as sag, swell, harmonics and flicker. Since medical equipments, semiconductor factory automations are very sensitive to voltage variations and therefore voltage sag in an islanded microgrid is of key significance. This paper proposes a half cycle discrete transformation (HCDT) technique for fast detection of voltage sag in an islanded microgrid and thereby provides fast control action using dynamic voltage restorer (DVR) to safe guard the voltage sensitive equipments in an islanded microgrid.  The detailed analysis of simulation results has clearly demonstrated the effectiveness of proposed method detects the voltage sag in 0.04 sec and there by improves the voltage profile of islanded microgrid.

Improved fault ride through capability of DFIG-wind turbines using customized dynamic voltage restorer

2018 ◽  
Vol 39 ◽  
pp. 114-125 ◽  
Author(s):  
Sitharthan R. ◽  
Sundarabalan C.K. ◽  
Devabalaji K.R. ◽  
Sathees Kumar Nataraj ◽  
Karthikeyan M.
Keyword(s):  
Wind Turbines ◽  
Dynamic Voltage Restorer ◽  
Fault Ride Through ◽  
Voltage Restorer ◽  
Dynamic Voltage
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