Transient stability control by means of under-frequency load shedding and a hybrid control scheme

  • P. F. Le Roux
  • R.C. Bansal
Keywords: Transient Stability, COI-referred reference frame index, Under Frequency Load Shedding, Hybrid Control Scheme


An electrical network constantly faces unforeseen events such as faults on lines, loss of load and loss of generation. Under-frequency load shedding and generator tripping are traditional methods used to stabilise a network when a transient fault occurs. These methods will prevent any network instability by shedding load or tripping the most critical generator at a calculated time when required. By executing these methods, the network can be stabilised in terms of balancing the generation and the load of a power system. A hybrid control scheme is proposed where the traditional methods are combined to reduce the stress levels exerted on the network and to minimise the load to be shed.


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Le Roux, P. F., & Bansal, R. (2017, December 23). Transient stability control by means of under-frequency load shedding and a hybrid control scheme. Journal of Energy in Southern Africa, 28(4).