
What is the Ferranti Effect and How is it Managed in Long AC Transmission Lines?
2025-08-12The Ferranti effect is a phenomenon in long, high-voltage AC transmission lines, particularly those over 250 km, where the receiving-end voltage is higher than the sending-end voltage under light-load or no-load conditions. This is caused by the line's inherent shunt capacitance and series inductance, which generate a capacitive charging current.
Effective management of the Ferranti effect is critical for maintaining stable grid operation. The primary solution is to utilize reactive power compensation to absorb the excess reactive power. This is typically achieved by installing shunt reactors at the receiving end of the line.
As experts in electrical construction and maintenance, we provide the necessary tools and equipment to support the installation and upkeep of such complex systems. Our comprehensive one-stop supply service ensures that our clients have access to all the necessary tools for constructing and maintaining stable and efficient AC transmission networks.