Equipment maintenance component replacement prioritization planning system and method

• US 10,161,315 B2
• Filed: 03/27/2015
• Issued: 12/25/2018
• Est. Priority Date: 04/04/2014
• Status: Active Grant

• Current Assignee: Mitsubishi Power Limited (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Inventors: Kitagawa, Tomoaki, Kasano, Manabu, Nakayama, Aki, Yamada, Akihiko
• Primary Examiner(s): Jarrett, Scott L
• Application Number:
  US15/301,145
• Publication Number:
  US 20170016400A1
• Time in Patent Office: 1,369 Days
• CPC Class Codes: F01D 5/005 Repairing methods or devices
• CPC Class Codes: F02C 9/00 Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants controlling air intakes F02C7/057; controlling turbines F01D; controlling compressors F04D27/00; controlling in general G05
• CPC Class Codes: F05D 2220/32 in gas turbines
• CPC Class Codes: F05D 2260/80 Diagnostics
• CPC Class Codes: F05D 2260/82 Forecasts
• CPC Class Codes: F05D 2270/112 by limiting temperatures
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G06Q 10/20 Administration of product repair or maintenance
• CPC Class Codes: G06Q 50/10 Services

Abstract

An operation plan preparation and evaluation device including a storage unit for storing master data related to equipment and a component, transaction data related to the equipment and the component generated when an operation plan is prepared, and an initial parameter used when the operation plan is prepared, and a control unit for preparing the operation plan based on the master data, the transaction data, and the initial parameter, in which the control unit performs a factor setting process of assigning a predetermined set value as the initial parameter, an operation plan preparation process of preparing the operation plan based on the initial parameter serving as the set value, the master data, and the transaction data, and an operation plan evaluation process of evaluating a plurality of respective operation plans prepared by repeatedly performing the operation plan preparation process while varying the initial parameter, and deriving an optimum operation plan.

Claims

1. An operation plan preparation and evaluation device for preparing an operation plan for a component used in equipment and evaluating the prepared operation plan, the operation plan preparation and evaluation device comprising:

storage for storing master information related to the equipment and the component, generated information related to the equipment and the component generated when the operation plan is prepared, and an initial factor used when the operation plan is prepared; and

an integrated circuit for preparing the operation plan based on the master information, the generated information, and the initial factor,

wherein the integrated circuit performs

a factor setting process of assigning a predetermined set value as the initial factor,

an operation plan preparation process of preparing the operation plan based on the initial factor serving as the set value, the master information, and the generated information,

an operation plan evaluation process of evaluating a plurality of respective operation plans prepared by repeatedly performing the operation plan preparation process while varying the set value of the initial factor in the factor setting process, and deriving an optimum operation plan, and

causing the optimum operation plan for the component to be executed,

wherein the master information includes operation job master information related to an operation job of the equipment,

the generated information includes individual article list information related to an individual usage condition of the component,

the integrated circuit performs

a component extraction process of extracting the component, which is required for the operation job and to which a job is not currently allocated, based on the individual article list information,

a priority assignment process of assigning priorities to a plurality of components extracted in the component extraction process, and

a component selection process of excepting a predetermined quantity m_i in descending order of priority from the components to which the priorities are assigned in the priority assignment process, and selecting components corresponding to a required quantity to be used in the operation job in descending order of priority from remaining components, and

the predetermined quantity m_i is treated as the initial factor in the factor setting process.

2. The operation plan preparation and evaluation device according to claim 1,

wherein the master information includes operation job master information related to an operation job of the equipment,

the generated information includes individual article list information related to an individual usage condition of the component,

the integrated circuit performs

a component extraction process of extracting the component, which is required for the operation job and is not currently used, based on the individual article list information, and

a priority assignment process of assigning priorities to a plurality of components extracted in the component extraction process,

the priorities are assigned to the components using a formula for computation represented by “

priority=coefficient α

_i×

residual life of component+(1−

coefficient α

_i)×

removing time of component removed at previous time”

or a formula for computation represented by “

priority=coefficient α

_i×

priority of residual life of component+(1−

coefficient α

_i)×

priority when removing time of component removed at previous time is arranged in time sequence”

in the priority assignment process, and

the coefficient α

_i (0≤

α

_i≤

1) is treated as the initial factor in the factor setting process.

3. The operation plan preparation and evaluation device according to claim 2,

wherein the generated information includes information about an individual residual life of the component,

an evaluation value of the operation plan is calculated using an evaluation function for evaluating the operation plan in the operation plan evaluation process, and

the evaluation function is a function including, as a variable, at least one of a total residual life obtained by adding residual lives of all the components, a predetermined evaluation scale, a quantity of new components, and a quantity of discarded components.

4. The operation plan preparation and evaluation device according to claim 3,

wherein the evaluation scale is a weighted average of a purity P_i of a used component in a predetermined operation job i of the equipment,

when the number of operation jobs i is set to N, a set of components allocated to the operation jobs i is set to C_i, and a set of components previously allocated to h operation jobs among the components allocated to the operation jobs i is set to A_h,

the weighted average of the purity P_i corresponds to a formula for computation represented by “

weighted average of purity P_i=Σ

_i{(|C_i|/N)×

P_i}”

, and

the purity P_i corresponds to a formula for computation represented by “

purity P_i=(1/|C_i|)max|C_i^A_i|”

, and

the evaluation function is a function represented by “

evaluation value=w₁×

total residual life obtained by adding residual lives of all components+w₂×

(1−

weighted average of purities P_i)+w₃×

quantity of new components+w₄×

quantity of discarded components”

.

5. The operation plan preparation and evaluation device according to claim 4,

wherein an event generation process of generating events including an operation start event in which operation of the equipment starts, and an operation end event in which the operation of the equipment is suspended,

an operation start event process of simulating an operation of the component in the operation start event, and

an operation end event process of simulating an operation of the component in the operation end event are performed in the operation plan preparation process,

the initial factor is a factor for selecting the component used in the operation start event, and

the component is selected based on the set value set in the factor setting process in the operation start event process.

6. The operation plan preparation and evaluation device according to claim 5,

wherein a test end event in which a test of the component ends, and a repair end event in which a repair of the component ends are generated in the event generation process, and

a test end event process of simulating an operation of the component in the test end event, and

a repair end event process of simulating an operation of the component in the repair end event are performed in the operation plan preparation process.

8. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 1, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

9. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 2, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

10. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 3, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

11. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 4, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

12. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 5, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

13. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 5, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

14. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 6, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.

7. An operation plan preparation and evaluation device for preparing an operation plan for a component used in equipment and evaluating the prepared operation plan, the operation plan preparation and evaluation device comprising:

storage for storing master information related to the equipment and the component, generated information related to the equipment and the component generated when the operation plan is prepared, and an initial factor used when the operation plan is prepared; and

an integrated circuit for preparing the operation plan based on the master information, the generated information, and the initial factor,

wherein the integrated circuit performs

a factor setting process of assigning a predetermined set value as the initial factor,

an operation plan preparation process of preparing the operation plan based on the initial factor serving as the set value, the master information, and the generated information,

an operation plan evaluation process of evaluating a plurality of respective operation plans prepared by repeatedly performing the operation plan preparation process while varying the set value of the initial factor in the factor setting process, and deriving an optimum operation plan, and

causing the optimum operation plan for the component to be executed,

wherein the master information includes operation job master information related to an operation job of the equipment,

the generated information includes individual article list information related to an individual usage condition of the component,

the integrated circuit performs

a component extraction process of extracting the component, which is required for the operation job and is not currently used, based on the individual article list information, and

a priority assignment process of assigning priorities to a plurality of components extracted in the component extraction process,

the priorities are assigned to the components using a formula for computation represented by “

priority=coefficient α

_i×

residual life of component+(1−

coefficient α

_i)×

removing time of component removed at previous time”

or a formula for computation represented by “

priority=coefficient α

_i×

priority of residual life of component+(1−

coefficient α

_i)×

priority when removing time of component removed at previous time is arranged in time sequence”

in the priority assignment process, and

the coefficient α

_i (0≤

α

_i≤

1) is treated as the initial factor in the factor setting process.

15. An operation plan preparation and evaluation method of preparing an operation plan for a component used in equipment and evaluating the prepared operation plan for an operation plan preparation and evaluation device according to claim 7, the operation plan preparation and evaluation method comprising:

assigning a predetermined set value as an initial factor used when the operation plan is prepared;

preparing the operation plan based on the initial factor serving as the set value, master information related to the equipment and the component, and generated information related to the equipment and the component generated when the operation plan is prepared; and

evaluating a plurality of respective operation plans prepared by repeatedly performing the preparing while varying the set value of the initial factor in the assigning, and deriving an optimum operation plan.