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.
As can be seen from the results of the measurements of an extreme use case of wide area GOOSE communications, an accelerated transmission line protection scheme will significantly reduce the fault clearing time for faults in Zone 2 of the distance protection.
This paper proposes a new method of optimal reclosing based on the total load angles of the synchronous gen erators in a multi-machine power system. First the optimal reclosing times are determined, and then the performance of the proposed reclosing method and that of the conventional reclosing technique is compared. In order to analyze the reclosing techniques, the IEEE nine bus power system model...
As power electric system becomes complex and severely congested the power delivery challenge becomes increasingly complex. With the limited expansion in the transmission system, utilities are always facing the challenge of improving system security and reliability without a significant investment in new infra structure. The modern power system comes with a new generation of nonlinear loads which extensively...
With the rapid increase in electric energy demand and restrictive limitations on new transmission system development, it has become increasingly crucial to optimally and efficiently utilize the AC system power capacity of all existing transmission network. In the last two decades Flexible AC Transmission has played a significant role in AC grid stabilization and efficient FACTS controlled power flow,...
This paper deals with dynamic performance of wind diesel system with variable wind speed turbine. The quality of power supplied to the autonomous system is improved by controlling the frequency to the rated value. To improve the system characteristics, a variable speed operative wind generator: Doubly-Fed Induction Generator along with diesel generator in the isolated hybrid system is used. The simulation...
In power systems, superconducting fault current limiters (SFCL) emerge as an alternative to limit the prospective short circuit currents to lower levels. The purpose of this paper is to study the influence of using superconducting devices on the transient stability of the synchronic operation and power quality. Different SFCL design and local of installation are also analyzed. Simulation studies are...
In the last years, the wind power generation incorporated into the standard grid has been increased significantly. This situation forced the revision of the electric utilities grid codes requirements, to guarantee the reliability in systems with high wind energy penetration. Particularly in transient conditions, the wind farms must withstand several types of disturbances coming from the grid, such...
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.