EHV stands for Extra High Voltage and refers to the highest levels of electrical voltage used in power transmission and distribution systems. It is typically used to describe voltage levels above 230 kV (kilovolts) and can reach up to 1200 kV.
EHV is crucial for transmitting large amounts of electrical power efficiently over long distances. By increasing the voltage, the current can be reduced, thus reducing resistive losses during transmission. This allows for higher power transfer capacities and minimizes the need for excessive conductor sizes, leading to cost and resource savings.
EHV systems consist of specialized equipment designed to handle the increased voltage levels, including transformers, circuit breakers, insulators, and transmission towers. The insulation requirements become more stringent as the voltage levels increase to prevent electrical breakdown and ensure safe and reliable operation.
EHV is commonly used in interconnecting power grids between cities, regions, or even countries. It enables the efficient transfer of electricity from power generating stations to substations, where it is then further distributed to consumers through lower voltage levels.
Overall, Extra High Voltage systems play a vital role in modern power systems, enabling the transmission of large amounts of electricity over vast distances, reducing energy losses, and supporting the reliable and stable supply of electrical power.
