Power quality and transient stability improvement of wind farm with fixed-speed induction generators using a STATCOM

2010 ◽  
Author(s):  
Guizhen Tian ◽  
Shengtie Wang ◽  
Guangchen Liu
Keyword(s):  
Power Quality ◽  
Wind Farm ◽  
Transient Stability ◽  
Induction Generators

scholarly journals Application of Anfis-Pid Controller for Statcom to Enhance Power Quality in Power System Connected Wind Energy System

2018 ◽  
Vol 7 (4.4) ◽  
pp. 35
Author(s):  
Huu Vinh, Nguyen ◽  
Hung Nguyen ◽  
Kim Hung Le
Keyword(s):  
Power System ◽  
Power Quality ◽  
Pid Controller ◽  
Wind Farm ◽  
Transient Stability ◽  
Short Circuit ◽  
Nonlinear Modeling ◽  
Energy System ◽  
Transient Time ◽  
Three Phase

In this paper, a proposed ANFIS-PID controller for the STATCOM to improve transient stability of the power system including DFIG based wind farm based on their nonlinear modeling is presented. The comparative simulation results in two cases of no controller and the ANFIS-PID controller for the STATCOM when occurs a three-phase short-circuit fault in the studied multi-machine power system are shown. It is shown the effectiveness of the proposed ANFIS-PID controller and applicability to a practical power system for enhancing power quality in transient time under large disturbance.  

scholarly journals Effects of Fault Current Limiters in Transient Stability Performance of Hybrid Wind Farm

2019 ◽  
Vol 9 (2) ◽  
pp. 2768-2775
Keyword(s):  
Wind Farm ◽  
Transient Stability ◽  
Low Voltage ◽  
Wind Farms ◽  
Induction Generator ◽  
Fault Current ◽  
Renewable Energy Resources ◽  
Low Voltage Ride Through ◽  
Induction Generators ◽  
Fault Current Limiters

Low voltage ride through capability is an ability of the wind farm to stay connected with grid at the time of disturbance in the power system. The penetration of wind based renewable energy resources is increasing and the low voltage ride through consideration is vital for systems studies. The literature available demonstrates the improvement in low voltage ride through either by using fault current limiters or by implementing a control strategy for induction generator based wind farms. In this paper the low voltage ride through capability enhancement of the fixed speed induction generator is presented with various fault current limiters. The authors have presented the effects of fault current limiters in the aggregated hybrid wind farm consisting the combination of fixed speed induction generators and doubly fed induction generators which is not available in literature so far. A transient fault is simulated using PSCAD/EMTDC software in both the cases and the results are presented and discussed.

scholarly journals Transient stability analysis of IEEE 9-bus system integrated with DFIG and SCIG based wind turbines

2021 ◽  
Vol 2120 (1) ◽  
pp. 012023
Author(s):  
Brish Ramlochun ◽  
Chockalingam Aravind Vaithilingam ◽  
Ahmad Adel Alsakati ◽  
Jamal Alnasseir
Keyword(s):  
Wind Farm ◽  
Transient Stability ◽  
Green Energy ◽  
Settling Time ◽  
Induction Generator ◽  
Relative Power ◽  
Synchronous Generators ◽  
Induction Generators ◽  
Peak Value ◽  
Bus System

Abstract Electricity is in high demand with a fast-growing population; hence it is advisable to turn towards green energy. In this research, Wind Turbine (WT) is modelled with two different types of induction generators (IGs), which are the Doubly-Fed Induction Generator (DFIG) and Squirrel-Cage Induction Generator (SCIG) and implemented to IEEE 9-Bus system to assess the transient stability. MATLAB/ Simulink R2019a platform was considered to carry the whole examination. DC1A excitation system was applied to Synchronous Generators (SGs) as well as Power System Stabilizer (PSS). The transmission line7-5 was found to suffer from a high peak value of a relative power angle of approximately 130 degrees. As for the settling time, without PSS it was 20.69 s and with PSS it became 6.23 s. A wind farm with a rated capacity of 60 MW was used in the system. WT integrated with DFIG has the lowest peak value of 127 degrees at Bus locations 4 and 5 and for SCIG, Bus 5 with a peak value of 136 degrees. Thus, it can be propelled as the perfect location. Moreover, this is due to the three-phase fault was located at the transmission line7-5 which is far away from Buses 4 and 5. In the end, the WT integrated with DFIG provides a lower peak value of relative power angle compared to SCIG, whereas for settling time, it is the opposite.

scholarly journals Modelling and performance analysis of doubly fed induction generator wind farm

2018 ◽  
Author(s):  
◽  
Anuoluwapo Oluwatobiloba Aluko
Keyword(s):  
Renewable Energy ◽  
Power Quality ◽  
Wind Farm ◽  
Transient Stability ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Load Flow ◽  
Active Power ◽  
Base Case ◽  
Integrated Network

Power generation from renewable sources like wind and sun have increased substantially owing to various challenges such as government regulations, environmental pollution and depletion of non-renewable energy sources over the past few decades. Of all renewable energy sources, wind appears to be the foremost of choice due to economies of scale. Due the intermittent nature of wind, the increase in the penetration of wind power to the grid gives rise to several challenges in which power quality is the most critical. The mitigation of power quality challenges to grid-connected wind energy systems and other renewable energy plants led to the development of the renewable energy grid code. This research focuses on voltage quality as one of the power quality issues affecting connection of renewable energy plants to the grid. This research models and performs analysis of a grid-connected doubly fed induction generator (DFIG) wind farm. Using the IEEE 9 bus system as a base case for the study, the modelled wind farm is then integrated into the base case. Steady state performance and performance during faults are analyzed using load flow study and transient stability studies respectively. The load flow study is carried out to comparatively evaluate the steady state stability of the base case and the wind farm integrated network with respect to the NRS 048 South Africa standard. The transient stability study is carried out on the wind farm integrated network with compliance to the South Africa renewable energy grid code (SAREGC) which allows the wind farm to reduce active power production during a continuous low voltage event below 85% at the point of common coupling. This work compensates the wind farm with a static synchronous compensator (STATCOM) to keep the voltage at the point of common coupling above the set point, thereby keeping the wind farm connected to the grid and supplying maximum active power during a low voltage event. The results show that the static synchronous compensator allows the wind farm ride through a low voltage event without disconnection and reduction in active power supply and the wind farm increases the transient stability of the network.

scholarly journals Wind Power Integration and Its Impact on Power Quality - A Didactic Approach

2020 ◽  
Vol 39 (2) ◽  
pp. 246-260
Author(s):  
Santos Kihwele
Keyword(s):  
Power Systems ◽  
Power System ◽  
Wind Power ◽  
Power Quality ◽  
Wind Farm ◽  
Wind Farms ◽  
Transient State ◽  
Inrush Current ◽  
Induction Generators ◽  
Grid Codes

This paper presents a model of a wind power system integrated with realistic power system, with intention of using it in addressing power quality issues in relations to grid codes during steady-state operation transient-state operation i.e., presence of grid fault events. For that case, a didactic approach of the normal performance of power systems due to the connection of fixed-speed wind turbine with induction generators is used. A study of integrating wind farms will be presented, including the incidence of high inrush current due to switching capacitor banks, out-rush current and voltage sags due to nearby three phase faults. As mandatory for the grid codes regulation, the incidence on the power quality at the point of common coupling is analyzed too. As a result of the contingency study, it will be shown that capacitors bank and fault current limiter can help the wind farm to ride-through a fault.

Impact of Large Wind Farms with DFIG on Power System Transient Stability

2011 ◽  
Vol 347-353 ◽  
pp. 791-794 ◽  
Author(s):  
Xiao Yan Bian ◽  
Guang Yue Li ◽  
Yang Fu
Keyword(s):  
Power System ◽  
Wind Farm ◽  
Transient Stability ◽  
Wind Farms ◽  
Power System Stability ◽  
System Stability ◽  
Induction Generators ◽  
The Difference ◽  
The Impact ◽  
Large Wind

It’s a new challenge to power system stability with large wind farm’s integration. Taking the wind farm which consist of GE1.5MW double fed induction generators that has been modeled in the software PSS/E as the research object, The difference between the impact of wind farm and conventional generators integrated to grid in power system transient progress is analyzed. Besides, the impact on transient progress of increasing wind farm penetration and differnet interconnection with wind farm to power system is investigated.

Analysis on the Penetration Level of Wind Farm Considering Transient Stability Constraint and Uncertainty of Wind Power

2020 ◽  
Vol 13 (7) ◽  
pp. 1078-1086
Author(s):  
Bai Hao ◽  
Huang Andi ◽  
Zhou Changcheng
Keyword(s):  
Wind Power ◽  
Energy Function ◽  
Wind Farm ◽  
Transient Stability ◽  
Programming Model ◽  
Forecast Error ◽  
Credibility Theory ◽  
Mixed Integer ◽  
Stability Constraint ◽  
Level Problem

Background: The penetration level of a wind farm with transient stability constraint and static security constraint has been a key problem in wind power applications. Objective: The study explores maximum penetration level problem of wind considering transient stability constraint and uncertainty of wind power out, based on credibility theory and corrected energy function method. Methods: According to the corrected energy function, the transient stability constraint of the power grid is transferred to the penetration level problem of a wind farm. Wind speed forecast error is handled as a fuzzy variable to express the uncertainty of wind farm output. Then this paper builds a fuzzy chance-constrained model to calculate wind farm penetration level. To avoid inefficient fuzzy simulation, the model is simplified to a mixed integer linear programming model. Results: The results validate the proposed model and investigate the influence of grid-connection node, wind turbine characteristic, fuzzy reliability index, and transient stability index on wind farm penetration level. Conclusion: The result shows that the model proposed in this study can consider the uncertainty of wind power out and establish a quantitative transient stability constraint to determine the wind farm penetration level with a certain fuzzy confidence level.

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