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.
Nowadays, one of the primary problems in the energy industry is ensuring rational operating conditions of electric power systems under variable loads and with regard to cost-effectiveness and technical capabilities of power plants. Supply fluctuated load considerably increases the costs in the power systems. The price of electricity in the case by changed load is generally higher than by constant...
The variability of large scale wind power generation at high penetration levels has a significant impact on the secure and economic operation of onshore power systems. Grid bottlenecks, high gradients and wasting of wind energy can be avoided using local Energy Storage Systems (ESS) with dedicated power and capacity. The storage type considered in this study is an adiabatic compressed air energy storage...
The objective of this study is to analyze the influence of electrochemical energy storage systems on low voltage grids with high penetration of renewables (RES), mostly photovoltaic power stations (PV). Furthermore, it compares the integration of energy storage systems (ESS) with other alternative solutions economically. It also presents the simulation results for a German power network in a suburban...
This article aims to develop a model of forward-looking management of battery technologies. For the construction of this model the methodology of Future-Oriented Technology Analysis has been adapted. The article first examines the available energy storage technologies, then selects and synthetically characterizes the future, emerging technologies requiring carrying out the development path with a...
Daily electric load schedules of electric power systems (EPS) are derived from the graphs of individual consumers, who are generally unbalanced. Changing the schedules of electrical loads (power consumption) gives consumers the opportunity to significantly adjust the total electrical load schedule of the EPS by reducing the need for generation capacity and current costs for the production and transmission...
Many regions in Russia are not connected with the centralized electric system because of their remote geographic location. Therefore, Isolated Micro Grids (IMG) solutions were adopted in the past to generate and supply electric power to these areas. These IMG generally have used conventional power generators to supply both the electric as well as the thermal power. Recently, generators based on Renewable...
THE increase of stochastic renewable infeeds to transmission networks as bulk generation of large offshore windfarms or as distributed generation in distribution networks requires new strategies in the system operation. On one hand the transmission capacity of the power systems must be as high, as unplanned dynamics, caused by these infeeds, can be transported without producing system bottlenecks...
THE increase of the penetration of stochastic renewable generation requires new strategies in the system operation. On one hand the transmission capacity of the power system must be as high, as unplanned dynamics, caused by renewable infeeds, can be transported without producing system bottlenecks. Such dynamic energy transports occur sometimes over long distances and require operational coordination...
The increase of the penetration of the stochastic renewable generation required new strategies by the power system operation. On the one hand the transmission capacity of the power system must by reserved for the unplanned green energy transients which occur sometimes for a long distance and requires operational coordination between different TSO. On the other hand some new indicators for the power...
This article describes a class designation and an accuracy calculation procedure for merging unit systems. The accuracy error calculations for each part have been performed using simulation models. Additionally, the requirements for the merging unit that come from the usage of the digital protocol according to IEC61850-9-2 are described. Scenarios for testing a real merging unit and experimental results...
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.