HVDC refurbishments are complex projects, as the optimal scope needs to be identified and all remaining interfaces clarified. With the help of constructive and detailed discussions between Mutual Energy and Siemens, a common understanding was established and the scope defined as; the detailed design, manufacturing, factory testing, installation, and commissioning of the control and protection system (including the replacement of auxiliary supplies, valve base electronics, and the measurement system), and the supply of a control training simulator.
The refurbishment of the interconnector will address the demands of the evolving electricity networks in both Great Britain and Northern Ireland. In particular, the upgrade improves the dynamic performance of the interconnector, enabling Mutual Energy to offer enhanced ancillary services. These will provide a valuable range of options to the System Operators as they seek the continued reliable and efficient management of the networks, whilst accommodating more variable renewable generation. Additionally, by introducing an overload capability, the upgraded Moyle Interconnector will have greater operational flexibility.