ABB’s FACTS solution to facilitate increased power flow from Scotland to England

2013-07-31 - National Grid selects ABB’s TCSC (thyristor controlled series compensation) equipment for Hutton substation in the first GB installation of its type

By ABB Communications

Similar FACTS installation

ABB has been awarded a major FACTS (Flexible Alternating Current Transmission System) project by National Grid to help boost the flow of power from Scotland to England. The project, to be carried out within the scope of National Grid’s Electricity Alliance Central (EAC), will involve the design, supply, installation and commissioning of TCSC (Thyristor Controlled Series Compensation) equipment at the Hutton 400 kilovolt (kV) substation, near Kendal in Cumbria, and associated works at Harker, Heysham, Penwortham and Stanah substations.

The project is part of the National Grid’s preparations for the GB (Great Britain) electricity transmission network to meet the government’s target for 15 percent of the UK’s energy to be produced from renewable energy sources by 2020. The TCSC equipment, which is scheduled to go live in 2014, is one of a number of infrastructure enhancements on the existing AC power system which together will increase the power transfer capacity between the Scotland and England network boundary by around 1 gigawatt (GW).

FACTS covers a group of technologies that enhance the security, capacity and flexibility of power transmission and distribution systems. Series compensation is a technique usually used when transmitting electricity over long distances using alternating current (AC). Series compensation improves power system stability and allows more power to be transferred through existing circuits.

The series compensation equipment to be installed at Hutton substation will use thyristor control to increase the power flow, mitigate SSR (subsynchronous resonance) and ensure that the power supply system remains stable. It is the first time that TCSC equipment will be installed in GB and so is a landmark contract.

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