The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In recent years renewable energy and FACTS devices are two technologies integrated widely in the electricity market. This paper presents a coordinated model based wind generator and dynamic shunt FACTS devices to improve the power system operation and control. Choosing the type of FACTS devices and deciding the installation location and control of multi shunt FACTS coordinated with multi wind source...
Wind Power System connected to electric grid has been increased in the last years. In order to investigate its dynamic behavior and influence into the grid, simulation method can be used to study the performance of overall power systems. In this paper, the Power System in Cape Verde is modeled and simulated with MATLAB/Simulink® considering Wind Farm. The model of wind turbine DFIG, the diesel generator,...
Variability of power generation from intermittent resources such as wind and solar plants presents an operational challenge for grid operators. The economic incentives and technical challenges that accompany large amounts of variable generation in island power systems are often much greater. The Hawaiian Electric Company and its subsidiaries, the Maui Electric Company and the Hawaii Electric Light...
This paper presents a modal analysis of a two machine power system that includes a doubly-fed induction generator (DFIG). The DFIG's model considers rotor flux linkages as dynamic states and stator flux linkages as algebraic variables. Active- and reactive-power controllers are also modeled. Active power is tracked for optimal power extraction from the wind. Using the power system set of differential-algebraic...
Current methods in which maximum sizes of new wind farms are determined do not take into consideration their impact on future wind penetration levels. In this paper, two methods are proposed to determine maximum sizes of multiple new wind farms for maximizing wind penetration levels. In both methods, each new wind farm size is determined using an iterative process where each wind farm's size is incremented...
This paper introduces a new general methodology for the modeling and reliability evaluation of small isolated power systems, which include wind turbines, photovoltaics, and diesel generators, based on fluid stochastic Petri nets (FSPNs). The proposed methodology presents two major novelties in FSPN modeling, namely: 1) the introduction of a new kind of Petri net arc, called the database arc, which...
This article compares the behaviour of different order models, for large scale wind farms comprising doubly fed induction generators (DFIGs). While it is important to have a model which is detailed enough that all interesting phenomena can be examined, it is also important to have simple models, not only to reduce computation time, but also to simplify the design of controllers. This article compares...
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...
In this paper, the doubly-fed induction generator (DFIG) for transient stability evaluations of power systems was systematically discussed, and the impacts of grid-connected large DFIG based wind farms on power system transient stability were then studied in detail. In the modeling of DFIG, an equivalent generator model was employed to reflect the combined behavior of the DFIG and its rotor converter...
This paper addresses the determination of the maximum penetration rate of renewable energy sources (RES) in island power systems. This issue is analyzed through a probabilistic approach which gives an interesting set of results giving to system operators the possibility to faces challenges brought up by massive RES connections. RES, especially wind farms and photovoltaic solar plants may affect significantly...
Renewable energy sources have the ability to provide electric power in rural areas whenever available. Although it is cheap, clean and abundant, the variation of output power with the variation of wind speed can cause significant power quality issues, especially in the case of a standalone generation system. This paper studies a network presenting a rural load, such as a small village, fed from a...
Distributed resources (such as wind turbines) can provide power to local loads in the electrical distribution system as well as benefits such as improved reliability. As more wind energy is connected to utility systems, it becomes important to understand and manage the impact of wind generation on system operations. This paper studies the impact of wind generation on load modeling of distribution...
This paper investigates the dynamic stability of a power system distribution network integrating variable speed wind generation based on a bifurcation analysis. A generalized model of the system is developed taking into account multiple wind farms, transformer branches and composite dynamic load model. Bifurcations may be analyzed by a systematic testing of the complete system Jacobian matrix. Considering...
This paper presents a simulation-based approach to study the effect of wind energy variation on the frequency regulation of a power system. In North America, the quality of frequency regulation is defined in terms of two indices known as Control Performance indices (CPS1 and CPS2). The power system is modelled as a control system with equivalent representation of turbine-governor dynamics. The system...
In this paper we present a module-based modeling of electricity infrastructure with special emphasis on the wind energy integration. Each (group of) wind generator(s) is defined as a module and is represented in terms of its local variables and the interconnection variables between the module and the system network. Therefore, it is possible to specify the performance sub-objectives of each module...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.