Title : 
On the physical meaning of nonactive powers in three-phase systems
         
        
            Author : 
Cakareski, Zeljko ; Emanuel, Alexander E.
         
        
            Author_Institution : 
Worcester Polytech. Inst., MA, USA
         
        
        
        
        
            fDate : 
7/1/1999 12:00:00 AM
         
        
        
        
            Abstract : 
This letter presents three-dimensional graphs of the Poynting vector distribution surrounding a three-phase line. Such displays help engineering students understand the physical mechanism of electric energy transmission and its separation in active and nonactive components
         
        
            Keywords : 
graphs; power supply quality; power system harmonics; power transmission; reactive power; Poynting vector distribution; active components; electric energy transmission; engineering students; harmonics; nonactive components; nonactive powers; power quality; three-dimensional graphs; three-phase line; three-phase systems; Conductors; Coordinate measuring machines; Engineering students; Magnetic field measurement; Magnetic fields; Mathematical model; Power quality; Power system harmonics; Reactive power; Voltage;
         
        
        
            Journal_Title : 
Power Engineering Review, IEEE