Coupled Magneto-Thermal Model for an Encapsulated Busbars System Using QuickField
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2014, Vol 38, Issue 38
Abstract
In this paper, we propose an approach for the magnetic and thermal modeling of an encapsulated busbars system, in three-phase execution, for high voltage using QuickField software. The paper proposes a numerical model developed by coupling of the magnetic field problem with the stationary and transient heat field problems for the geometry of a three-phase execution busbars system with common shield. The coupling of problems is realized by importing specific losses from the magnetic field problem as heat sources for thermal field problem. The magnetic field problem is also coupled to the electrical circuit. The electrodynamic forces that occur between conductors in the presence of the ferromagnetic shield have different values compared to those that occur in an unshielded system. In the model it was taken into account the variation of electrical conductivity with the temperature. The global heat transfer coefficient by convection and radiation used in thermal model was estimated using the power losses computed by magnetic model. When evaluating the global heat transfer coefficient was taken into account the temperature dependence of the physical properties of the air. There is a good agreement between numerical and analytical temperature values. The paper analyzes the results for two materials used to build the shield, iron and aluminum. The presented model can be used for analysis, design and optimization of three-phase busbars system with common shield.
Authors and Affiliations
Ioan Popa, Alin-Iulian Dolan
Keywords
Related Articles
- EP ID EP89177
- DOI -
- Views 209
- Downloads 0
Continuous Monitoring and SCADA Integration of the Sag of Overhead Electricity Transmission Cables Based on the Measurement of their Slope
This paper presents a proposed system for the continuous monitoring of conductor sag values in overhead electricity transmission lines through slope angle measurement, by using a mathematical model based on the catenary...
AN AGGREGATE MULTI-LOOP CONTROL FOR A DC SERVODRIVE. THE DESIGN OF THE NEURO-FUZZY CONTROLLER
The purpose of the study is the synthesis of a reliable and robust fuzzy controller for a 2nd order DC servodrive. A first step is to prepare the computations associated to the main control loops for the above mentioned...
The Online Temperature Control
In this paper is presented the hardware and software design of a remote controlled system which can have multiple destinations. In particularly, this system is used to create an online thermostat using a microcont...
Theoretical and Practical Aspects Regarding Radiated Emission Testing in Semi-Anechoic Chambers
This paper presents some theoretical and practical aspects on measurements of radiated emission from a Portable computer. The used Standards are presented and discussed. The measurements were carried out in a Semi-Anecho...
Concerning the Automatic Computation of the Electrical Stresses in the High Voltage Substations during the Transient Regimes
This paper deals with an automatic computation program using a Matlab graphical user interface GUI useful to compute electrical stresses which appear in the high voltage substations; that means the parameters computation...