Turbine Shaft Torsional for the Turbine-generators at Hunterston (776.5MVA) and Torness (806MVA) Nuclear Generating Stations in Scotland
There is serial compensation capacitor on the transmission lines which connects the north part of National Grid system and the south part of Scottish Power Transmission system. It is planned to complete the HVDC construction in Western Link in 2016. Serial compensation capacitor and HVDC cause the risk of sub-synchronous oscillation, which leads to unit damage by shaft torsional vibration. For preventing the risk, SIFANG supplied 4 sets of CSC-800 series sub-synchronous oscillation protection systems on synchronous generating units integrating GPS Clock Synchronizer at Hunterston B /Torness Nuclear Generating Station. Besides providing the required protection systems, SIFANG also supplied the design & engineering, testing, commissioning, training, S-N curve calculation and project management for this project.
In the beginning of Dec., 2015, TG7 in Hunterston B was commissioned and run successfully.
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