Load-level-sensitive governor gains for speed control of hydrogenerators

Journal Article · Tue Mar 01 04:00:00 EST 1988 · IEEE Trans. Power Electronics; (United States)

DOI:https://doi.org/10.1109/60.4203· OSTI ID:5191046

Wozniak, L; Bitz, D J

This work discusses the application of load-level-sensitive gains to proportional-plus-integral speed control of hydrogenerators. Appropriate root configuration gain functions of wicket gate position are derived for isolated resistive loads. Computer programs are used to calculate these gains from model turbine data and system parameters. Root locus tuning is used to determine appropriate gains for infinite bus loads. Simulations are presented which compare the use of constant gains to the use of these variable gains for isolated resistive and infinite bus loads. Additional resistive load simulations show the effect of a one-second digital filter on the gain functions. Results indicate that the variable gain responses resemble 0.707 damping at each load level. Sample speed-transient comparisons between variable and constant gains show decreases of up to 45% in speed peak overshoot and 80% in power settling time. Load and pressure time-responses are included.

• Research Organization: Dept. of General Engineering, Univ. of Illinois, Urbana, IL (US)
• OSTI ID: 5191046
• Journal Information: IEEE Trans. Power Electronics; (United States), Journal Name: IEEE Trans. Power Electronics; (United States) Vol. 3:1; ISSN ITCNE
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130300* -- Hydro Energy-- Plant Design & Operation
130700 -- Hydro Energy-- Power-Conversion Systems
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
990230 -- Mathematics & Mathematical Models-- (1987-1989)
CALCULATION METHODS
COMPUTER CALCULATIONS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERIZED SIMULATION
CONTROL EQUIPMENT
CONTROL SYSTEMS
DIGITAL FILTERS
DYNAMIC LOADS
ELECTRIC GENERATORS
EQUIPMENT
FUNCTIONS
HYDROELECTRIC POWER PLANTS
POWER PLANTS
SIMULATION
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
SPEED REGULATORS
SYSTEMS ANALYSIS
TURBOGENERATORS