Method and apparatus for monitoring hydroelectric facility maintenance and environmental costs
First Claim
1. A method for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the method comprising the steps of:
- monitoring at least one operating parameter continuously over an operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components;
calculating the amount of the life span used up at the operating condition subject to the stressor for the operating period; and
deriving a maintenance cost from the amount of the life span of the component or generating unit used up.
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Accused Products
Abstract
A system for monitoring maintenance information in a hydroelectric power generation facility comprises sensors coupled to a controller. The sensors detect actual levels of operating parameters for a desired operating period at an operating condition. The detected parameters include a stressor capable of affecting a life span, or mean time between failures, of the turbine or one of its components. The controller determines the amount of the life span used up. A method for monitoring maintenance information in a power generation facility includes the steps of monitoring levels of operating parameters including a stressor for a desired operating period at an operating condition. The stressor affects the life span of the turbine or one of its components, and the amount of the life span used up over the operating period is calculated. A method for monitoring losses in a hydroelectric power generation facility operating to satisfy environmental constraints involves storing predetermined reference signals representative of desired turbine efficiencies over a range of operating levels in a memory circuit. Current levels of operating parameters are sensed while the facility is operating to satisfy the environmental constraints. A sensed parameter signal representative of a current turbine efficiency is generated from the sensed levels of operating parameters. The generated parameter signal is compared to the predetermined reference signals to determine an environmental efficiency loss signal.
124 Citations
27 Claims
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1. A method for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the method comprising the steps of:
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monitoring at least one operating parameter continuously over an operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components;
calculating the amount of the life span used up at the operating condition subject to the stressor for the operating period; and
deriving a maintenance cost from the amount of the life span of the component or generating unit used up. - View Dependent Claims (2, 3, 4, 5)
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6. A method for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the method comprising the steps of:
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monitoring at least one operating parameter continuously over an operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components; and
calculating the amount of the life span used up at the operating condition subject to the stressor for the operating period, wherein the amount of the life span used up is calculated in accordance with the following relationship;
- View Dependent Claims (7, 8, 9, 10)
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11. A method for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the method comprising the steps of:
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monitoring at least one operating parameter continuously over an operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components; and
calculating the amount of the life span used up at the operating condition subject to the stressor for the operating period, further comprising the step of deriving a maintenance cost from the amount of the life span of the component or generating unit used up, wherein the maintenance cost is derived in accordance with the following relationship;
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12. A system for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the system comprising:
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at least one sensor, the at least one sensor being situated in the facility to detect actual levels of at least one operating parameter for a desired operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components; and
a controller coupled to the at least one sensor, the controller determining the amount of the life span used up at the operating condition subject to the stressor for the operating period, wherein the controller is programmed to derive a maintenance cost from the amount of the life span of the component or generating unit used up. - View Dependent Claims (13, 14)
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15. A system for monitoring maintenance information in a hydroelectric power generation facility including at least one generating unit having turbine and generator components, the system comprising:
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at least one sensor, the at least one sensor being situated in the facility to detect actual levels of at least one operating parameter for a desired operating period at an operating condition, the at least one parameter including a stressor capable of affecting a life span, or mean time between failures, of the generating unit or one of its components; and
a controller coupled to the at least one sensor, the controller determining the amount of the life span used up at the operating condition subject to the stressor for the operating period, wherein the controller includes a programmed computer that is programmed to determine the amount of the life span used up in accordance with the following relationship;
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16. A method for monitoring losses in a hydroelectric power generation facility, the facility capable of operating to satisfy environmental constraints, the method comprising the steps of:
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storing in a memory circuit a set of predetermined reference signals representative of desired turbine efficiencies over a range of operating levels;
operating the facility to satisfy the environmental constraints;
sensing current levels of operating parameters while the facility is operating to satisfy the environmental constraints;
generating a sensed parameter signal from the sensed levels of operating parameters representative of a current turbine efficiency;
comparing the generated parameter signal to the predetermined reference signals to determine an environmental efficiency loss signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification