Automatic generation control for hydro systems
Journal Article
·
· IEEE Trans. Power Electronics; (United States)
Modern Automatic Generation Control (AGC) is implemented with digital computers that periodically sample tie line real power flows, line frequency, and generator power outputs. These analog signals are usually measured to second periodically and combined with desired interchange to obtain the Area Control Error (ACE). The ACE digital quantity is allocated to regulating hydro turbines and transmitted via telemetry to the remote terminal untis (RTU). The RTUs convert the raise/lower megawatts (MW) into timed relay contact closures to the governor which result in wicket gate open/close movement to change the generator output power. The output power of each generator is monitored by the digital AGC which closes a feedback loop around the governor-turbine-generator to assure the desired power level is attained. This paper describes the feedback loop design, which is essentially a sampled-data control. Additional feedback loops due to the ACE and load regulation are also analyzed. A method is presented for allocating water usage between reservoirs on a generator command-time basis. The theoretical designs are verified by on-line measurements presented in the paper.
- Research Organization:
- Advanced Control Systems, Inc., Atlanta, GA (US)
- OSTI ID:
- 5190794
- 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
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Related Subjects
13 HYDRO ENERGY
130500 -- Hydro Energy-- Economic
Industrial
& Business Aspects
130700* -- Hydro Energy-- Power-Conversion Systems
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AUTOMATION
COMMUNICATIONS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
DATA TRANSMISSION
DIGITAL COMPUTERS
ELECTRIC GENERATORS
HYDROELECTRIC POWER PLANTS
ON-LINE CONTROL SYSTEMS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
POWER GENERATION
POWER PLANTS
TELEMETRY
TURBOGENERATORS
130500 -- Hydro Energy-- Economic
Industrial
& Business Aspects
130700* -- Hydro Energy-- Power-Conversion Systems
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AUTOMATION
COMMUNICATIONS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
DATA TRANSMISSION
DIGITAL COMPUTERS
ELECTRIC GENERATORS
HYDROELECTRIC POWER PLANTS
ON-LINE CONTROL SYSTEMS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
POWER GENERATION
POWER PLANTS
TELEMETRY
TURBOGENERATORS