Estimation of Hydropower Synchronous Generator Parameters Through Field Simulations of Modified Standard Tests

The present paper deals with a simple but sufficiently accurate method for constant parameter identification of synchronous machine standard circuit model. The method is mainly based on classical tests at the line frequency as for induction machines. The proposed identification process is organized in a sequence beginning by a correct evaluation of the field to armature turns ratio, whereby the rest of invariant parameters are estimated from standstill tests. Simulations and experiments of synchronous machine transients, in normal and faulty operations, were carried out to prove the validity of the method.