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.
The goal of this work is to study the different dynamic behavior of the Italian electric power system, when subject to large disturbances, in relation to adopted load model and reactive power compensation devices considered for the network. Effectiveness of Defence Plans has already been proved by system Operators, but little attention is paid sometimes to the influence of used models. The adoption...
The paper presents the current state of art of a developed smart Distribution Management System (DMS) environment based on the innovative SCADA systems. The tool is designed to intelligently manage, on-line and off-line, the distribution systems with a high penetration of dispersed generation and is particularly adapted to the specifics of the distribution systems in Italy. The work results from the...
Nowadays, the penetration of wind power in power systems increases very fast. In particular, the Offshore Wind Farms (OWFs) are very promising for future development. The unpredictable real output of the Wind Farms (WF) can cause reactive power problems and lead to variable voltage profiles and consequently to voltage quality issues. Given these circumstances, this paper presents a summary of the...
The Hierarchical Voltage Control has recently become an important alternative to the traditional voltage control solutions. This paper deals with the computation of an optimal profile for the pilot bus voltages using different optimization strategies. For this purpose, the mathematical model of the optimization problem was studied considering two issues: i) defining the constraints of the optimization...
Usually, the main purpose of optimal reactive power flow (ORPF) programs is to minimize the total power losses of a network, maintaining the voltage profile within an acceptable range. This model was adopted by almost all the vertically integrated utilities. Nowadays, in the liberalized environment, a new ORPF formulation, aimed at an explicit maximization of the system security, is more suitable...
Voltage control and reactive power support have been deeply investigated by the technical point of view. System operators and planners have developed complex control schemes, in order to achieve a secure and efficient operation. After the enforcement of market structures, new issues have appeared. Nowadays, the main subjects related with the reactive power management are: maintaining an adequate security...
The paper deals with the automatic procedures used for the definition of voltage profiles to be adopted in the operation of bulk power systems with the aim of optimizing both the economic and security issues. After reviewing the most important automatic algorithms for optimal reactive power flow (ORPF) existing in the technical literature, some new ORPF procedures are proposed. They are based on modern...
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.