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With an ever-increasing importance of wind power generation in power systems, the necessity of choosing the appropriate type of technology for the wind turbine generators becomes more significant. In the current paper, fixed and variable speed wind turbines and the application of energy storage system (ESS) to smoothen the wind farm output power are studied. A detailed analysis of the influence of...
This paper investigates the use of a static synchronous compensator (STATCOM) to mitigate the voltage fluctuations and improve fault ride-through capability of wind farm with fixed speed induction generators. In order to assure STATCOM of running safely and reliably in both normal and faulty conditions, a novel control strategy which combines negative-sequence voltage feed-forward control with conventional...
Using bulk energy storage systems such as pumped-hydro electric storage (PHES) and compressed-air energy storage (CAES) with wind power plants offers advantages. They are well-proven technologies and more economical compared to batteries. Being synchronous machines, apart from the ability to regulate wind farm real power output, they can also be used to provide reactive power to support wind farms,...
This paper describes the effect of electrical parameters of the double fed induction generator on the transient voltage stability of a DFIG to a simple grid; the DFIG model has been developed in the Matlab/simulink tool. The dynamic behavior of a wind turbine connected to a grid is examined. A three-phase fault is applied close to the wind turbine. The effect of different electrical parameters of...
As a clean renewable energy, wind energy draws more and more attention around the world. In case of high wind speed or low speed but substantial installed wind power capacity, wind turbine generators (WTGs) will take the place of traditional power plant partly. Under the circumstance, the transient stability will change. Therefore, in this article, the synthetical dynamic model of WTG is introduced...
It is expected that increasing amount of distributed generation (DG) will be connected to electrical power systems in the near future. When these generations are in small amounts, their impacts on power system dynamics will be negligible. But if the penetration level becomes higher, distributed generations may start to influence the dynamic behavior of a power system as a whole and its impacts is...
It is expected that increasing amounts of new generation technologies will be connected to electrical power systems in the near future. Most of these technologies are of considerably smaller scale than conventional synchronous generators and are therefore connected to distribution grids, as the DFIG-based wind farm. When connected in small amounts, the impact of wind farm on power system transient...
This article is concerned with the impact of large-scale wind farms utilizing double fed induction generator (DFIG) on the transient stability to a general power system. In the first instance, the synthetical dynamic model of the wind turbine generators (WTGs) is introduced, including pitch angle control model and the generator protective model. And then, the simulation is made to the CIGRE B4-39...
In recent years, there has been a worldwide growth in the exploitation of wind farms. Because of increasing wind generation, growing non-liner loads and competitive electricity markets the operation mechanism of power systems are facing some problems such as transient stability, voltage regulation, damping of power oscillation, power flow control, etc. Among shunt FACTS devices STATCOM has been recognized...
During recent years, the size of individual wind turbines has grown closer to 10 MW, and the size of wind power plants has increased significantly to 300 MW or more. This growing size of wind power generation requires that careful evaluation of transient stability of the overall grid should be undertaken. This paper attempts to investigate the impact of wind power plant penetration on the transient...
This paper, presents a pitch controlled Wind Turbine Generation System (WTGS) which is used in practice now a days, to have optimum power flow and to reduce overloading of wind turbine when higher wind speeds are available. Also, a pitch control system is used for stabilization of the wind turbine at grid faults. Application of Static Synchronous Compensator (STATCOM) and static capacitor bank is...
This paper presents transient stability analysis for a power system with high wind penetration. The transient stability has been evaluated based on two stability criteria: rotor angle stability and voltage stability. A modified IEEE-14 bus system has been used as the main study network and simulations have been conducted at several wind power penetration levels, defined as a fraction of total system...
Wind energy will continue to grow at a rapid pace and will provide an increasingly large portion of the total electricity generation. To achieve its full potential, the industry needs adequate wind-turbine generator (WTG) dynamic models to determine the impact of adding wind generation, and establish how the system needs to be upgraded.For the most part, WTG manufacturers have sponsored the development...
Wind farms are becoming important distributed renewable energy resources. However, voltage stability issues with wind farms employing fixed-speed induction generators may require such systems to be augmented with dynamic compensation devices, such as STATCOM units. In preparation for deployment of a 10 MVA STATCOM at an existing wind farm in the Bonneville Power Administration (BPA) system, the STATCOM...
There is a national targeted amount of 20.000 MW of installed wind power in the Spanish Electrical System by 2010, the new Infrastructures Program -2016 horizon-, to be issued in the next months, appoints to a new 29.000 MW target for that period, and there are even more ambitious objectives for the next decade. This amount of installed power, compared with a load peak around 43700 MW and taking into...
Increasing the capacity of wind generation connected to power system affects many aspects of system operation and behaviour, both steady state and transient stability will be affected. Furthermore, this influence will increase following the increase in penetration of wind in generation capacity. This paper presents how the wind farm impacts the steady state stability of the generation system. The...
This paper presents the response of distribution static synchronous compensator (DSTATCOM). The connection of wind turbines to distribution systems may affect the voltage quality offered to the consumers. One of the factors contributing to this effect is the rapid variations of the wind turbine output power, which cause respective fluctuations in the supply voltage referred to as flicker. This paper...
This work presents firstly a description of simulation models for use in PowerFactoryTM and ATP programs for transient stability studies of power systems with wind turbines. Based on these models, simulation modules for both platforms were developed, the objective is to allow an evaluation comparing a digital simulator of transients with free distribution, ATP, with a reference program internationally...
Summary form only given. There are a number of issues need to be studied regarding the wind farm integration. The comparatively long distance transmission of wind power must to be considered because the regions with abundant wind resources and other proper conditions suitable for large wind farms construction are in the periphery of the grid, far from the load center. In general the regional network...
Summary form only given. This work demonstrates that the integration of variable speed wind systems with doubly fed induction generators and a four quadrant AC-to-AC converter connected to the rotor windings (DFIG), increases the transient stability margin of the electrical grids, when compared with the case where the fixed speed wind systems with cage generators are used. The results clearly show...
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