Method for the monitoring of a plant
First Claim
1. A method for the monitoring of a plant having a plurality of sub-systems which is operable at variable working points and comprising the following steps:
- a) respective measured values are detected for a fixed set of process parameters (B, U, S1, . . . , SN) at pre-settable time intervals during the operation of the plant (1);
b) the measured values detected in a learning phase for different working points are used to prepare models (M1, M2, . . . , MN) for the operating characteristics of the sub-systems (11, 12, . . . , 1N), with the input values of each model (M1, M2, . . . , MN) being at least a part of the process parameters (B, U, S1, . . . , SN) and the output value of each model comprising a model value (Yi, Yik) for at least one of the process parameters, and with the models (M1, M2, . . . , MN) being optimised by comparing the model values with the measured values;
c) at least one monitoring parameter (Ri, Rik), which is independent of the respective current working point, is determined at pre-settable time intervals in an operating phase using the models (M1, M2, . . . , MN);
d) the time-dependent course of the monitoring parameter (Ri, Rik) is used for the monitoring of the plant (1);
characterised in that a pre-check (2) is carried out prior to the determination of the monitoring parameter (Ri, Rik), in which a check is made whether at least the measured values for those process parameters which are operating parameters (B) are within a pre-determined range.
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Abstract
A method is proposed for the monitoring of a plant having a plurality of sub-systems which is operable at variable working points. Respective measured values are detected for a fixed set of process parameters (B, U, S1, . . . , SN) at pre-settable time intervals during the operation of the plant (1). The measured values detected in a learning phase for different working points are used to prepare models (M1, M2, . . . , MN) for the operating characteristics of the sub-systems (11, 12, . . . , 1N). At least one monitoring parameter (Ri, Rik), which is independent of the respective current working point, is determined at pre-settable time intervals in an operating phase using the models (M1, M2, . . . , MN) and the time-dependent course of the monitoring parameter (Ri, Rik) is used for the monitoring of the plant (1). A pre-check (2) is carried out prior to the determination of the monitoring parameter (Ri, Rik), in which a check is made whether at least the measured values for those process parameters which are operating parameters (B) are within a pre-determined range.
26 Citations
12 Claims
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1. A method for the monitoring of a plant having a plurality of sub-systems which is operable at variable working points and comprising the following steps:
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a) respective measured values are detected for a fixed set of process parameters (B, U, S1, . . . , SN) at pre-settable time intervals during the operation of the plant (1);
b) the measured values detected in a learning phase for different working points are used to prepare models (M1, M2, . . . , MN) for the operating characteristics of the sub-systems (11, 12, . . . , 1N), with the input values of each model (M1, M2, . . . , MN) being at least a part of the process parameters (B, U, S1, . . . , SN) and the output value of each model comprising a model value (Yi, Yik) for at least one of the process parameters, and with the models (M1, M2, . . . , MN) being optimised by comparing the model values with the measured values;
c) at least one monitoring parameter (Ri, Rik), which is independent of the respective current working point, is determined at pre-settable time intervals in an operating phase using the models (M1, M2, . . . , MN);
d) the time-dependent course of the monitoring parameter (Ri, Rik) is used for the monitoring of the plant (1);
characterised in that a pre-check (2) is carried out prior to the determination of the monitoring parameter (Ri, Rik), in which a check is made whether at least the measured values for those process parameters which are operating parameters (B) are within a pre-determined range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification