Investigating Oscillations in Bulb Turbine Plant During Islanded black start Operation
- Idaho National Laboratory
This paper investigates the frequency oscillatory behavior displayed by the bulb turbine-based run-of-river (ROR) hydropower system under islanded operation. These oscillations prevent higher loading of these generators (under islanded conditions) and hence reduce the black start capability of these generators. To investigate the problem, first, a transfer function model of the bulb-turbine system, sensitive to the effects of head variation, blade angle, and other non-linearities pertaining to turbine characteristics is derived. Next, by analyzing this transfer function model and through simulations, it is determined that system inertia along with other parameters could be responsible for these oscillations. Also, through simulations it is shown that the same ROR system’s behavior is different under islanded mode compared to grid-connected mode.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- 17
- DOE Contract Number:
- AC07-05ID14517
- OSTI ID:
- 2467448
- Report Number(s):
- INL/CON-23-75479-Rev000
- Country of Publication:
- United States
- Language:
- English
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