Hybrid computer simulation of the dynamic response of a power system to stochastic disturbances is used to compare the non-linear and linear variation of system state. It is shown that linear analysis gives sufficiently accurate resuts for deviation of system state except when the system is operating close to the dynamic stability limit. The non-linear deviation of state close to stability limits is not necessarily less than that given by linear analysis as has been previously thought. The simulation of stochastic response allows the operating margin to be estimated from the magnitude of system disturbance and the effects of short excursions of the system state into regions of low or negative damping.
|Number of pages||5|
|Journal||Electrical Engineering Transactions|
|Publication status||Published - 1 Dec 1979|