Sensitivity Analysis of Power Systems

Modern control theory is being used more and more in regulator design of synchronous generator automatic regulating equipment. Making use of the well-established linearized equations of the synchronous machine and its control equipment, the characteristic equation of the system is developed from which the eigenvalues of the system are found. The sensitivities of these eigenvalues to the various parameters of the control system are calculated. This approach can provide a basis for optimal design of the system. A detailed sensitivity analysis is made of a particular system under various operating conditions, and results are tabulated, making it possible to obtain a clear idea about the effect of any parameter on the system performance and dynamic stability limit.