Abstract
For years, capacitive effects have been the subject of research [1] and [2]. The capacitive effects are discrete capacitors that appear between active conductors of power lines and between them with the ground plane, generating capacitive reactive power to the network [1] and [2]. Indeed, it must be noted that these effects affect the windings of the transformer when the coupling is in star or triangle. This study is conducted to show that capacitive effects affect transformer windings differently when coupling is in stars or triangles. The results obtained are interesting and can be exploited in electrical transmission networks to ensure a long lifespan of transformers.
Highlights
The transport of electrical energy between production and consumption centres, often characterized by long distances, poses many problems, among other things, joule losses and voltage drops [3] [4] [5] [7] and [8]
The reactive energy generated by discrete capacitors that are created between the different active conductors on the one hand, and between each active conductor with the plane of the ground on the other hand, varies according to the configuration of the line
The example of the plug circuit makes us understand that the capacitor sends its energy on the impedance which is in parallel with it; this allows us to deduce that among the various capacitors formed between the lines conductors, some generate undesirable reactive energy on the transformers windings at the level of the departure and arrival stations when the line is operating at empty or at low load
Summary
The transport of electrical energy between production and consumption centres, often characterized by long distances, poses many problems, among other things, joule losses and voltage drops [3] [4] [5] [7] and [8]. The reactive energy generated by discrete capacitors that are created between the different active conductors on the one hand, and between each active conductor with the plane of the ground on the other hand, varies according to the configuration (geometry) of the line This generated reactive energy is distributed in half on each of the two ends of the line or cable [8] and [10]. This reactive energy generated becomes one of the causes of unwanted surges and instability of the voltage of the network These capacitive effects are very harmful when operating empty or low-load transportation system [11] [12] and [13]. Special attention must be paid to the selection of the cutting of the windings of transformers operated in the transmission networks of electrical energy
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
