# US 2004/0073409 A1 · Method of initializing a simulation of the behavior of an industrial plant, and simulation system for an industrial plant

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- Number: US 2004/0073409 A1
- Document ID: US20040073409A1
- Status: Published application
- Kind: A1
- Application number: 10/026,265
- Filed: 2001-12-21
- Published: 2004-04-15
- Earliest claimed: 1997-01-21
- Assignees: Siemens Aktiengesellschaft
- Inventors: Thomas Fehn
- Web page: https://patentgrep.com/patent/US20040073409A1

## CPC

- G05B 17/02: electric
- F01K 13/00: General layout or general methods of operation of complete plants
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D)

## Abstract

During an initialization of a simulation of the behavior of an industrial plant containing a number of components, a particularly reliable parameter input is intended to be ensured with a particularly low outlay. To this end, in an initialization method provision is made, according to the invention, that for each component a component type is identified in each case and, in circuit terms, is characterized by a number of inputs and by a number of outputs for one parameter in each case. The initialization method uses a stored component-type-specific signal flow structure for the parameter of each output for specifying whether a parameter input is requested for a component.

## Claims

### Claim 1

A method of initializing a simulation of a behavior of an industrial plant, which comprises:
identifying, for each component of an industrial plant having a number of components, a component type defined in circuit terms by a number of inputs and by a number of outputs for one parameter;
using a stored dependence matrix describing a component-type-specific signal flow structure for a parameter of each of the number of outputs to determine for each of the number of outputs which parameters cannot be derived from other parameters to be fed to the component; and
entering only those parameters which cannot be derived from the other parameters to be fed to the component.

### Claim 2 (depends on 1)

The method according to claim 1, which comprises using a parameter value ascertained during an initialization of the component for an output in an initialization of a further component having an input connected downstream of the output of the component.

### Claim 3 (depends on 1)

The method according to claim 1, which comprises using a parameter value initially input during an initialization of the component for an output in an initialization of a further component having an input connected downstream of the output of the component.

### Claim 4 (depends on 1)

The method according to claim 1, which further comprises providing the dependence matrix with a number of columns corresponding to the number of inputs of the component type and a number of rows corresponding to the number of outputs of the component type, and recording in the rows for each output of the component type whether the related output parameter is completely defined by the parameters at the inputs of the component type.

### Claim 5

In combination with an industrial plant having a number of components classifiable into a number of component types, a simulation system for the industrial plant, the simulation system comprising:
a storage module storing a dependence matrix describing a component-type-specific signal flow structure for each component type of the industrial plant; and
a computer module determining for each of the number of outputs which parameters cannot be derived from other parameters to be fed to the component and specifying a parameter input to be requested only for those parameters of each of the number of outputs which cannot be derived from other parameters to be fed to the component.

### Claim 6 (depends on 5)

The simulation system according to claim 5, wherein said dependence matrix has a number of columns corresponding to the number of inputs of the component type and a number of rows corresponding to the number of outputs of the component type, said rows recording for each output of the component type whether the related output parameter is completely defined by the parameters at the inputs of the component type.