Subsynchronous resonance on series compensated transmission lines with quadrature boosters

In Great Britain, increased wind generation, up to 34 GW, is planned. Offshore and onshore infrastructure reinforcements have been proposed, the inland reinforcement including series compensation (fixed capacitors), as discussed in the UK National Grid 2020 Vision. Interaction of series fixed capacitors with the quadrature boosters that are already installed in the GB transmission grid is assessed, with particular emphasis on the occurrence of subsynchronous resonance.