Full Form of EHV

What is EHV?

Extra High Voltage (EHV) refers to voltage levels typically above 220,000 volts (220 kV) used in electrical power transmission systems. In India, EHV lines are a critical component of the national grid, operated mainly by the Power Grid Corporation of India Limited (PGCIL) and state transmission utilities. These high-voltage lines enable efficient bulk transfer of electricity over long distances from generating stations to load centres, minimising resistive losses. EHV is predominantly used in 400 kV and 765 kV transmission networks, which form the backbone of India’s interstate and interregional power corridors. The term is commonly encountered in electrical engineering textbooks, transmission planning documents, and tenders for tower erection and substation equipment. For students appearing in GATE, ESE, or state engineering exams, understanding EHV concepts—such as corona discharge, insulation coordination, and switchgear—is essential. The deployment of EHV infrastructure has accelerated under schemes like the Green Energy Corridor to evacuate renewable power. Overall, EHV technology is central to India’s goal of achieving reliable, low-loss electricity supply across its vast geography.

EHV का फुल फॉर्म

Example

The new EHV transmission line from the solar park to the pooling station is designed for 765 kV operation to handle 4000 MW of power.

EHV — frequently asked questions

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