Determination of synchronous-machine-stability study constants. Final report
Data for two different 500 MW turbogenerators was gathered from standstill, on-line, and rated-speed open-circuit frequency response, dc inductance, 60 Hz field impedance, and line switching tests. The relative merits of generator models computed from standstill and on-line frequency response tests, stator decrement tests and sudden short circuit tests were judged by their ability to reproduce the measured line switching transients. From the results, an equivalent circuit model with three rotor windings in each axis and d-axis rotor circuit mutual leakage elements is recommended, with the parameters of the model being obtained from standstill, and in some cases also on-line frequency response measurements. Magnetic non-linearity of the iron was significant in all parts of the work. Q-axis saturation could not be estimated adequately from d-axis characteristics. Steady state measurements, on load, were used to compute the q-axis saturation curve.
- Research Organization:
- Ontario Hydro, Toronto (Canada)
- OSTI ID:
- 6577237
- Report Number(s):
- EPRI-EL-1424(Vol.2)
- Country of Publication:
- United States
- Language:
- English
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DATA
ELECTRIC GENERATORS
ELECTRICAL TRANSIENTS
ENERGY SYSTEMS
EXPERIMENTAL DATA
FREQUENCY RESPONSE TESTING
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PERFORMANCE TESTING
POWER SYSTEMS
RELIABILITY
STABILITY
TESTING
THEORETICAL DATA
TRANSIENTS
TURBOGENERATORS
VOLTAGE DROP