Method of estimating the maximum power generation capacity and for controlling a specified power reserve of a single cycle or combined cycle gas turbine power plant, and a power generating system for use with said method
First Claim
1. A method of estimating the maximum power generation capacity of a gas turbine power plant having a microprocessor coupled to a memory arranged as a controller which regulates an operation of the power plant, the method comprising the controller:
- calculating an actual power output and a maximum power generation capacity of the gas turbine power plant based on a mathematical model of the gas turbine power plant;
measuring the actual power output of the gas turbine power plant;
comparing the calculated actual power output and the measured power output to derive a model-estimation error;
processing the model-estimation error to generate a correction signal; and
applying the correction signal to the calculated maximum power generation capacity to obtain a corrected estimate of the maximum power generation capacity of the gas turbine power plant.
3 Assignments
0 Petitions
Accused Products
Abstract
An estimation unit can estimate, on a real-time basis, a maximum power generation capacity of a single cycle or combined cycle gas turbine power plant. For example, the actual power output and the maximum power generation capacity can be calculated relying on a mathematical process model. Subsequently, the calculated actual power output can be compared with the measured power output yielding a model-estimation error. Based on the model-estimation error, a correction signal can be deduced, to correct the calculated maximum power generation capacity. A controller can maintain a specified power reserve. The controller can use an estimate of the maximum power generation capacity as a reference, subtract a load offset, and apply the resulting signal as upper limit of the load set-point.
-
Citations
17 Claims
-
1. A method of estimating the maximum power generation capacity of a gas turbine power plant having a microprocessor coupled to a memory arranged as a controller which regulates an operation of the power plant, the method comprising the controller:
-
calculating an actual power output and a maximum power generation capacity of the gas turbine power plant based on a mathematical model of the gas turbine power plant; measuring the actual power output of the gas turbine power plant; comparing the calculated actual power output and the measured power output to derive a model-estimation error; processing the model-estimation error to generate a correction signal; and applying the correction signal to the calculated maximum power generation capacity to obtain a corrected estimate of the maximum power generation capacity of the gas turbine power plant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A power generating system, comprising:
-
a gas turbine power plant; a controller for regulating operation of the gas turbine power plant; and an estimation unit for; calculating an actual power output and a maximum power generation capacity of the gas turbine power plant based on a mathematical model of the gas turbine power plant; measuring the actual power output of the gas turbine power plant; comparing the calculated actual power output and the measured power output to derive a model-estimation error; processing the model-estimation error to generate a correction signal; applying the correction signal to the calculated maximum power generation capacity to obtain a corrected estimate of the maximum power generation capacity of the gas turbine power plant; and continuously providing an estimate of the maximum power generation capacity of the gas turbine power plant. - View Dependent Claims (15, 16, 17)
-
Specification