Design and analysis of high voltage capacitor by metalized polypropylene film

At present condition both type of capacitor high and low voltage capacitors are made up of using All Polypropylene Film (APP) and Low tension capacitors made up of using Metalized Polypropylene Film (MPP).APP film capacitor having less dielectric losses and high voltage stress. It also have long life hence generally used in high voltage and low voltage capacitor. But the cost of low voltage capacitor is increased due to use of All Polypropylene film. So due the high, the use of this type of capacitor is less. Most important disadvantage of this type of capacitor non-self-healing property means if fault occur in capacitor large amount of capacitance value decreases or may be damage of capacitor takes place. On the other hand, MPP Film capacitor having self-healing property. This is heart of MPP type of capacitor. For increasing the current economy of the power system and to manufacture efficient and economical capacitors, in this thesis we worked on the loss angle or called dissipation factor, the cost of capacitor and voltage stress. By using Metalized film the size and weight of the capacitor also reduces. Due to metalized film the time required for production of capacitor will reduces. Similarly the material required for capacitor for same rating as of APP is reduces, so weight and size will be decreases. Hence the cost of capacitor decreases.