Limit equation for mitigation of the temporary over voltage issue following the Network Control System Protection Scheme action

TasNetworks own and operate the Network Control System Protection Scheme and provide this service to Basslink Pty. Ltd. NCSPS was designed and implemented to maximise the power transfer capacity on transmission corridor. Due to the evolution of the Tasmanian power system, there is a need to review the network security risks of Temporary Over Voltage (TOV) following certain NCSPS action at Hadspen-George Town 220 kV transmission corridor. Appropriate limit advice and constraint equations are developed and invoked for the secure operation of the power system. This paper describes the system studies and observations used in constructing the TOV limit advice.