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.
Due to the randomness and intermittent characteristics of wind energy, the integration of wind farm may have many negative effects on the operation of the distribution networks. In this paper, a scenario-based evaluation framework is established for the theoretically analysis of influences introduced by the uncertainties of wind power integration. Then, a set of well designed evaluation indexes are...
Photovoltaic (PV) system is composed of several elements as solar array, boost converter, inverter and load. The solar array should be integrated with a dc-dc converter and a control algorithm to perform a search to track the maximum power continuously. We adopt perturbation and observation method to implement Maximum Power Point Tracking (MPPT) for solar cells. Owing to the existence of converters,...
This paper presents modeling, simulation, and analysis of load following behavior of a microturbine (MT) as a distributed energy resource (DER). The MT-generator (MTG) system consists of the MT coupled to a synchronous generator. Simulation is done in MATLAB for different loading conditions under islanded and grid-connected modes. The MTG model also incorporates a speed controller for maintaining...
This work presents the analysis and performance of connecting two wind power generation systems with the energy storage at the dc side. Energy storage is desirable to be installed to keep constant output from the wind power generation system. The DC connection of two wind power generation system helps to exchange power between the two systems and can suppress the disturbance of the output power to...
This paper describes an educational case study approach to FACTS controllers on an electric power network. Application software, SIMFACTS, was developed by the authors with the GUIDE tool from Matlabtrade in order to simulate the power system effects resulting from the inclusion of FACTS controllers. The studied topologies were: series, shunt and combined compensators. A simple explanation of several...
A partitioning scheme for transient simulation of shipboard power systems (SPS) is presented. Using diakoptics, the piecewise transient solution to a ungrounded AC-radial (3phi) ring-bus system is found. Cable tie-lines (floating pi-segments) on the SPS ring are converted to hexagon equivalents by discretization and decoupled via source-transportation, diakoptics, and exploiting mutual-susceptance...
In order to analyze the dynamic performance for hydro-generator under loss of excitation (LOE) condition more effectively, based on MATALB, a mathematical model of hydro-generator under LOE condition is constructed in this paper. The model includes synchronous generator model, speed governor model, hydraulic turbine model, excitation regulation model and transmission line model. Several types of LOE...
Many large scale system blackouts involve relay misoperations. Traditional relay algorithms and settings need to be evaluated under a variety of fault and no-fault system-wide scenarios to better understand the causes for misoperations. New fault diagnosis algorithms also need to be developed to assure improved relaying performance and then evaluated under various scenarios. This paper introduces...
The modeling and simulation of a simplified interconnection system consisting of a distributed generation (DG) unit connected to grid via inverter interface is addressed in this paper. The inverter interface is controlled with synchronous frame PI current controller. The task of tuning of controller is done with MATLAB. The current harmonics should be limited according to the requirement of relevant...
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.