The Ferranti Effect is a phenomenon in long AC transmission lines where the receiving end voltage is higher than the sending end voltage. This occurs under light load or no-load conditions due to the line's capacitance. The effect can be problematic as it can damage equipment and cause system instability.

To address the Ferranti Effect, various methods are used, including:

• Shunt Reactors: These are devices installed along the transmission line to absorb the excess reactive power generated by the line's capacitance, thereby controlling and stabilizing the voltage.

• Synchronous Condensers: These rotating electrical machines can be used to either generate or absorb reactive power to regulate the voltage.

As a provider of comprehensive equipment for substations and power line maintenance, Ningbo Changshi offers solutions and tools to support the installation and upkeep of such voltage control systems.