Control system for hydroelectric power station system

A control system for controlling a hydroelectric power station system including first and second water reservoirs of different water levels, a third water reservoir provided in cascade with and between said first and second reservoirs and having a water storage capacity smaller than those of said first and second reservoirs, and power stations provided between said first and third reservoirs and between said third and second reservoirs, respectively, in which load instructions applied to said respective power stations are produced by distributing an overall load instruction in accordance with the water level of said third reservoir.

A control system for controlling a hydroelectric power station system including first and second water reservoirs of different water levels, a third water reservoir provided in cascade between said first and second reservoirs and having a water storage capacity smaller than those of said first and second reservoirs and power stations between said first and third reservoirs and between said third and second reservoirs, respectively, in which load instructions applied to said respective power stations are produced by distributing an overall load instruction with a ratio determined in accordance with the rated outputs of said respective power stations and the load instructions are corrected according to the deviation of the water level of said third reservoir.

A control system for a hydroelectric power station system including first and second water reservoirs of different water levels, a third water reservoir provided between said first and second reservoirs in cascade and having a water storage capacity smaller than those of said first and second reservoirs, and power stations provided between said first and third reservoirs and between said third and second reservoirs, respectively, in which the load instructions applied to said respective power stations are produced by distributing an overall load instruction in accordance with the water levels of said first, second and third reservoirs.

A control system for controlling a hydroelectric power station system including first and second water reservoirs located upstream and downstream, respectively, in a water system, a third water reservoir located between said first and second reservoirs and having a smaller water storage capacity than that of any one of said first and second reservoirs, and first and second power stations provided between said first and third reservoirs and between said third and second reservoirs, respectively, said control system comprising first means for dividing a total load instruction representative of a required total power generation of said power station system into first and second individual load instructions and controlling said first and second power stations according to said first and second individual load instruction, respectively, and second means for selectively controlling at least one of said first and second power stations according to variation of the water level of said third water reservoir in place of the individual load instruction for the respective power stations depending on the water level of said third reservoir and the operating conditions of said power stations.

A control system for controlling a hydroelectric power station system including first and second water reservoirs located upstream and downstream, respectively, in a water system, a third water reservoir located between said first and second reservoirs and having a smaller water storage capacity than that of any one of said first and second reservoirs, and first and second power stations provided between said first and third reservoirs and between said third and second reservoirs, respectively, said control system comprising first means for dividing a total load instruction representative of a required total power generation of said power station system into first and second individual load instructions and for controlling said first and second power stations according to said first and second individual load instructions, respectively, and second means for selectively controlling at least one of said first and second power stations according to variation of the water level of said third reservoir in place of said individual load instruction for the respective power stations when the variation of the water level of said third reservoir exceeds at least one predetermined range.

A control system for controlling a hydroelectric power station system including first and second water reservoirs located upstream and downstream, respectively, in a water system, a third water reservoir located between said first and second reservoirs and having a smaller water storage capacity than that of any one of said first and second reservoirs, and first and second power stations provided between said first and third reservoirs and between said third and second reservoirs, respectively, said control system comprising first means for controlling the output of one of said first and second power stations according to a total load instruction representative of a required total power generation of the power station system, and second means for controlling the output of the other of said first and second power stations so as to maintain the water level of said third water reservoir substantially constant.