Explore the four common electric power transmission methods: overhead, underground, submarine, and HVDC, with their pros and cons.
Four Most Common Electric Power Transmission Methods
Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected lines which facilitate this movement are known as a transmission network. Here, we explore the four most common methods of electric power transmission.
1. Overhead Transmission
Overhead transmission is the most common method and often what we envision when we think of power lines. Wires are strung between tall towers and carry electricity across long distances. This method is widely used due to its cost-effectiveness and ease of maintenance.
2. Underground Transmission
Underground transmission is used in urban areas or sensitive locations where overhead lines are not suitable. This method involves burying cables underground. It’s safer and more aesthetically pleasing, but it’s also more expensive to install and maintain.
3. Submarine Power Transmission
Submarine power transmission is used to carry electricity under bodies of water. Submarine cables are often used to connect power grids on islands with mainland grids, or to interconnect different countries’ power systems.
4. HVDC Transmission
High Voltage Direct Current (HVDC) is a method of transmitting electric power over long distances using direct current. This method is advantageous for submarine and underground power transmissions, as it reduces the power loss over long distances.
Conclusion
In summary, the four common methods of electric power transmission include overhead, underground, submarine, and HVDC transmission. Each method is designed to meet specific requirements and has its own advantages and disadvantages. The choice of method depends on various factors such as the distance of transmission, geographical features, cost, and the capacity of power to be transmitted.
