Optimal PID gain schedule for hydrogenerators

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · IEEE Transactions on Energy Conversion; (USA)

DOI:https://doi.org/10.1109/60.43228· OSTI ID:5714061

Orelind, G ^[1]; Wozniak, L; Medanic, J ^[2]; Whittemore, T ^[3]

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1. Adept Technology, San Jose, CA (US)
2. Illinois Univ., Urbana, IL (USA)
3. Bureau of Reclamation, Denver, CO (USA)

This paper describes the development and testing of a digital gain switching governor for hydrogenerators. Optimal gains were found at different load points by minimizing a quadratic performance criterion prior to controller operating. During operation, the gain sets are switched in depending on the gate position and speed error magnitude. With gain switching operating, the digital governor was shown to have a substantial reduction of noise on the command signal and up to 42% faster responses to power requests. Non-linear control strategies enabled the digital governor to have a 2.5% to 2% reduction in speed overshoot on startups, and an 8% to 1% reduction in undershoot on load rejections as compared to the analog.

• OSTI ID: 5714061
• Journal Information: IEEE Transactions on Energy Conversion; (USA), Vol. 4:3; ISSN 0885-8969
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
COMPUTERIZED CONTROL SYSTEMS
DESIGN
HYDROELECTRIC POWER PLANTS
DIGITAL SYSTEMS
GAIN
PERFORMANCE TESTING
AMPLIFICATION
CONTROL SYSTEMS
POWER PLANTS
TESTING
130300* - Hydro Energy- Plant Design & Operation