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.
A new approach to the non-stationary thermal processes calculation in the overhead power lines was developed. Using the developed approach we can solve the current problem of increasing the grids with overhead lines efficiency. An approximate analytical solution of the wire heating nonlinear differential equation was developed. The solution is based on the wires temperature exponent lowering using...
The transmission capacity of overhead power lines depends on the temperature. Power cores temperature is determined by the weather conditions (sun, wind, temperature) and the load current magnitude. Due to their high performance characteristics insulated wires are widely used in the power industry. Based on the heat conductivity differential equation we developed a generalized mathematical model for...
This paper shows the obtained equation of the unified mathematical model to find the temperature of insulated and bare conductors of overhead power lines, taking into account weather conditions. A comparison of created model with CIGRE, IEEE methods and the Finite Element Method is presented. We have achieved high precision of results matching. On the basis of the created mathematical model we found...
The authors have completed an analyzes and propose results of experiments on the use of various types of special transformers of zero sequence current to determine the fault connection in overhead lines with insulated neutral. A device for determining the single-phase earth faults in overhead lines with insulated neutral without installing cable insertion to the first air-line support is offered....
The approach to analysis of a dynamic temperature mode of overhead power lines is proposed. The implementation of the approach is completed with lowering the wire temperature with the least square method. An analytical solution of nonlinear differential equations of non-isolated wire heating under forced convection has been determined. The authors propose equations based on the solution for calculating...
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.