Anomaly detection device and display device
AssigneeIHI Corporation
InventorsKiminori Satou, Hirotaka Kawabe, Hiroaki Hayase
Life of this patent
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Abstract
An anomaly detection device detects an abnormal condition of a coal-fired boiler and includes a correlation calculating unit to acquire an index representing a correlation between a first parameter and a second parameter, the first parameter that is any one of a power generation amount and a first physical quantity, and the second parameter that is any one of a pressure of an exhaust gas and a second physical quantity and an anomaly determination unit configured to detect the abnormal condition in a case in which the index deviates from a predetermined range.
Claims2
An anomaly detection device detecting an abnormal condition of a coal-fired boiler according to adherence of ashes to a heat exchanger of the coal-fired boiler disposed in a thermal power station, the anomaly detection device comprising:
- a correlation calculating unit configured to acquire an index representing a correlation between a first parameter and a second parameter, the first parameter that is any one of a power generation amount generated by the thermal power station using steam generated by the coal-fired boiler and a first physical quantity having a relation of being in proportion to the power generation amount and a second parameter that is any one of a pressure of an exhaust gas discharged from the coal-fired boiler, and the second physical quantity having a relation of being in proportion to the pressure;
- and
- an anomaly determination unit configured to detect the abnormal condition in a case in which the index acquired by the correlation calculating unit deviates from a predetermined range,
- wherein the correlation calculating unit acquires
- one or more indexes among a first index representing a correlation between the power generation amount and the pressure and a third index representing a correlation between the power generation amount and the second physical quantity, and
- a second index representing a correlation between the first physical quantity and the pressure,
- wherein the anomaly determination unit detects the abnormal condition in a case in which each of the one or more indexes and the second index acquired by the correlation calculating unit deviates from the predetermined range, and
- wherein the first physical quantity is a current value flowing through an induced draft fan that maintains a constant pressure of the inside of the coal-fired boiler by inducing the exhaust gas.
Dependencies are inferred from the claim text.