INTRODUCTION(Need of High Voltage Engineering)

As we know,

• In today's scenario the demand of Electric Power is increasing day by day, So the Power System are Continuosly increasing with their Generation Capacity and Transmission Capability.
• Now days, The generating Station of whole country are getting linked up in two grids.

1. Regional Grids
2. Super Grids

[Now you have the question in your mind that what is Regional Grids and What is Super Grids? 

Regional Grids - The Regional Grid is formed by interconnecting the different transmission system of a particular area through the transmission line.

Super Grids - A Super Grid is a wide area transmission  network that makes it possible to trade high volumes of electricity across great distances.]

• These Grids connection energy has helped in the production of the electrical energy and easy to transport this electrical energy from generating centres to places where demand is required. 
• At present days 400 kV A.C. lines are already in operation. For creation of large power systems which will be interconnected into an integrated high voltage power system use of alternating voltage of 750 kV and above similarly of Direct Voltage of the order of 1200 kV is expected.
• In present days, High voltage is used in Electrical Power Distribution, in cathode ray tubes, to generate X-rays and particle beams, military and scientific applications.

In short,

• A higher voltage leads to a higher efficiency and less loss as well as more transmission capacity of the line and extends the value of transmitted power over longer distances.
• Therefore, high-voltage engineering provides the access to electrical energy for consumers far away from power generation units.