What are the primary methods to reduce power loss in electrical transmission lines?

2025-08-12

Utilities can significantly reduce power loss by employing several key strategies and technologies:

  • Increase Transmission Voltage: According to the power formula P = VI, increasing the voltage allows the same amount of power to be transmitted with a much lower current. Since resistive losses are proportional to the square of the current (I2R), a reduction in current dramatically decreases losses. We provide specialized tension stringing equipment for a wide range of voltages, from low to extra-high voltage (EHV) lines.

  • Use Advanced Conductors: Using conductors with a larger cross-sectional area reduces resistance. Even more effective is the use of modern materials like High-Temperature Low-Sag (HTLS) conductors, which offer lower resistance and reduced sag, allowing for greater power capacity and efficiency without changing existing infrastructure.

  • Minimize Corona Discharge: Corona losses can be minimized by using bundled conductors (multiple smaller conductors per phase instead of one large one) and conductors with a larger diameter or a smoother surface. The use of specialized corona rings on insulators can also help by distributing the electric field more evenly.

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