Overview

The proposed works at the Rye House substation include modifications to existing equipment. Three new current transformers (CT's) will be added to the existing National Grid sealing end compound, which will require piled foundations and earthing connections to the existing infrastructure. Current transformers (CTs) are specialised electrical devices that measure and monitor high-current circuits. They transform high electrical currents into proportionally smaller ones that can be safely measured by standard instruments. CTs are crucial in power systems for protection, metering, and monitoring, allowing accurate measurement without connecting devices directly to high-voltage lines.

The work also encompasses modifications to control systems housed within the existing National Grid control building.The installation of a ducted multicore cable route will be completed to establish connectivity between the National Grid HV compound and the sealing end compound. A ducted multicore cable route is an installation method where multiple electrical cables (each containing several conductors or "cores") are housed within protective ducting systems. This provides physical protection for the cables against mechanical damage, moisture, and environmental factors while allowing for future maintenance or cable replacement without excavation.