The primary cause of power loss in a transmission line is the inherent resistance of the conductors. This is known as resistive loss or I2R loss. According to the principles of electrical engineering, as current (I) flows through a conductor with resistance (R), some of the electrical energy is converted into heat and dissipated into the surrounding environment.

The formula for power loss is Ploss=I2R. This equation clearly shows that the power lost is proportional to the square of the current. This is why minimizing the current is the most effective way to reduce power loss. Other, less significant technical losses include corona loss (ionization of air around the conductor) and dielectric loss in insulators.

At Ningbo Changshi, we understand that this is the most critical factor in grid efficiency. Our overhead transmission line equipment and underground cable laying equipment are designed for the precise installation of high-quality conductors, which are the main components for minimizing this resistive loss.