Simulation Testing Of Rate Allocation Control To Relieve Transmission Overloads During Emergencies

Rate allocation control is a feedback algorithm for dynamic rescheduling of power flows to alleviate transmission link overloads. For computation speed, the control algorithm uses simplifying approximations including linearization. To investigate the potential of rate allocation control as a tool for on-line emergency control, it is tested with a simulation program with detailed modeling of prime mover dynamics, nonlinear load flow, and conventional governors and voltage regulators. The test case is a realistic emergency scenario developed from a well-known power system upset. Two of the simulations are presented to demonstrate several features of the rate allocation control.