JP2017016181A - System operation support device, system operation support method, and program of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of providing more useful information in operation support of a production system or a plant including storage facility.SOLUTION: A production system model M; facility capability information C expressing facility capability of resource supply facility, production facility and supply path, and in-period resource utilization information R expressing a storage residual amount of resource at the time of starting a predetermined period and a planned supply amount of resource from the resource supply facility in the predetermined period are input to a production system operation support device 1. An in-system producible amount calculation part 11 obtains an available amount of resource corresponding to the in-period resource utilization information R in a predetermined period, and, by using the production system model M, the facility capability information C and the in-period resource utilization information R, calculates relationship between the total production amount of a product, which can be produced within a predetermined period in a production system by using an available amount of resource, and the total consumption amount of resource. A visualization part 12 visualizes a calculation result by the in-system producible amount calculation part 11 as a graph.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a resource supply facility for supplying resources such as electric power and gas, a resource storage facility for accumulating resources, a production facility and resources for consuming resources to produce products, and a production system having a product supply path, It relates to plant operation support technology.

  An apparatus that supports the operation of a production system is disclosed as a known technique (for example, Patent Document 1). According to Patent Document 1, an energy management support device is a resource supply facility that supplies resources, a resource consumer facility that demands resources supplied from the resource supply facility, and a supply and demand system that has a resource supply route. Supporting operation of equipment that consumes energy. In this energy management support device, when the formula group generation unit inputs the supply / demand system model of the supply / demand system and the facility capability information indicating the facility capability of the resource supply facility and the supply route, Based on this, a formula group consisting of a plurality of formulas representing the objective function and constraint conditions of the optimization problem for the supply and demand system represented by the supply and demand system model is generated. Then, the first order predicate logical expression generation unit generates a first order predicate logical expression from the mathematical formula group generated by the mathematical formula group generation unit, and the limit symbol elimination unit obtains the first order predicate logical formula from the limit symbol elimination method. Processing is performed to obtain an expression representing the relationship between the total demand amount in the resource consumer facility and the total energy consumption in the resource supply facility. And a visualization part visualizes the relational expression obtained as a result of processing in the quantifier elimination part.

International Publication No. 2014/129470

  In an actual production system, a method for more efficient operation is widely used by using a storage facility for storing energy such as a storage battery, a heat storage layer, and a gas holder. Therefore, for production systems and plants that include storage facilities, by visualizing how the relationship between the production volume of products and the supply amount of resources depends on the characteristics of the storage facilities, it is possible to provide more operational support for production systems, etc. It is expected to provide useful information.

  An object of this invention is to provide the technique which enables provision of more useful information in operation support of a production system or a plant including a storage facility.

  According to the system operation support apparatus according to one aspect of the present invention, a resource supply facility for supplying resources, a resource storage facility for storing resources, a resource supply facility, and a product that consumes resources supplied from the resource storage facility. A production system operation support apparatus that supports the operation of the production facility for a production system that has a supply path for the production facility and the resource and product, and includes a model of the production system and the resource supply facility. , Facility capacity information representing the facility capacity of the production facility and the supply path, a remaining amount of resources at the start of a predetermined period, and a period representing the planned supply of resources from the resource supply facility in the predetermined period When the in-resource use information is input, the available amount of the resource for the predetermined period according to the in-period resource use information is obtained, and the production system model, the facility capability Using the information and the resource utilization information within the period, the total production amount and the total consumption amount of the resources that can be produced using the available amount of the resource within the predetermined period in the production system And a visualization unit that visualizes a calculation result by the in-system production amount calculation unit as a graph.

  Further, according to the system operation support program according to one aspect of the present invention, the resource supply facility for supplying resources, the resource storage facility for storing resources, the resource supply facility, and the resources supplied from the resource storage facility are consumed. Production system operation support for causing an information processing apparatus to execute production system operation support processing for supporting the operation of the production facility, targeting production facilities that produce products, and production systems having resources and product supply paths A program comprising: a model of the production system; equipment capacity information representing equipment capacity of the resource supply equipment, the production equipment and the supply path; a remaining amount of resources at the start of a predetermined period; When the resource usage information within the period representing the planned supply amount of the resource from the resource supply facility in the period is input, the predetermined period according to the resource usage information within the period In addition to obtaining the available amount of the resource, the resource can be used within the predetermined period in the production system by using the model of the production system, the facility capacity information, and the resource usage information in the period. The relationship between the total amount of products that can be produced using the amount and the total consumption of resources is calculated, and the result of the calculation is visualized as a graph.

  Further, according to the system operation support method according to one aspect of the present invention, the resource supply facility for supplying resources, the resource storage facility for storing resources, the resource supply facility, and the resources supplied from the resource storage facility are consumed. A production system operation support method for supporting the operation of the production facility for a production system and a production system for producing a product, and a production system having a supply route for the product, the model of the production system and the resource Equipment capacity information indicating the equipment capacity of the supply equipment, the production equipment and the supply route, the remaining amount of resources accumulated at the start of a predetermined period, and the planned supply amount of resources from the resource supply equipment in the predetermined period When the resource use information within the period to be input is input, the available amount of the resource for the predetermined period according to the resource use information within the period is obtained, and the model of the production system, Using the capacity information and the resource utilization information within the period, the total production amount and the total amount of resources that can be produced using the available amount of the resource within the predetermined period in the production system. The relationship with consumption is calculated, and the result of the calculation is visualized as a graph.

  According to the present invention, it is possible to provide more useful information in operation support for a production system or a plant including a storage facility.

It is a figure explaining the outline | summary of the method of assisting operation | use of the production facility which produces a product with the system | strain operation assistance apparatus which concerns on this invention. It is a block diagram of the system | strain operation assistance apparatus which concerns on 1st Embodiment. It is a figure which illustrates a production system model. It is a figure which illustrates the facility capability information which the system | strain operation assistance apparatus which concerns on 1st Embodiment uses. It is a figure explaining the resource use information in a period which the system | strain operation assistance apparatus which concerns on 1st Embodiment uses. It is a figure which shows the specific example of the resource utilization information in a period in 1st Embodiment. It is a figure which illustrates the time change of the amount of accumulation of the gas of a gas accumulation facility in the case of generating steam using gas as a resource in a production system. It is FIG. (1) which shows the 1st-order predicate logic formula which the production possible quantity calculation part in a system | system | group produces | generates in 1st Embodiment. It is a figure (the 2) which shows the 1st-order predicate logic formula which the production possible quantity calculation part in a system generates in a 1st embodiment. It is a figure which shows the logical formula obtained by processing the first order predicate logical formula of FIG. 8A and FIG. 8B by the limit symbol elimination method. It is the figure which visualized the logical formula calculated | required about the 1st case of the resource utilization information in a period in 1st Embodiment. It is the figure which visualized the logical expression calculated | required about the 2nd case of the resource utilization information in a period in 1st Embodiment. It is the figure which visualized the logical expression calculated | required about the 3rd case of the resource utilization information in a period in 1st Embodiment. It is a figure explaining the facility capability information which the system | strain operation assistance apparatus which concerns on 2nd Embodiment uses. It is a figure which shows the consumption of gas at the time of generating steam using gas on the operating conditions of an example, the production amount of steam, and those integrated amount time series. FIG. 15 is a diagram in which the integrated time series of FIG. 14 is further superimposed on the graph of FIG. 11 and visualized. It is a figure explaining the resource utilization information in a period which the system | strain operation assistance apparatus which concerns on 3rd Embodiment uses. It is a figure which shows the specific example of the resource utilization information in a period in 3rd Embodiment. It is a figure which illustrates the time change of the amount of accumulation of the gas of a gas accumulation facility in the case of generating steam using gas as a resource in a production system. It is a figure (the 1) which shows the 1st-order predicate logic formula which the production possible quantity calculation part in a system generates in a 3rd embodiment. It is FIG. (2) which shows the 1st-order predicate logic formula which the production possible quantity calculation part in a system | system | group produces | generates in 3rd Embodiment. It is the figure which visualized the logical expression calculated | required about the 1st case of the resource utilization information in a period in 3rd Embodiment. It is the figure which visualized the logical expression calculated | required about the 2nd case of the resource utilization information in a period in 3rd Embodiment. It is the figure which visualized the logical expression calculated | required about the 3rd case of the resource utilization information in a period in 3rd Embodiment. It is a figure which shows the result of having displayed the 1st case-the 3rd case on the graph simultaneously. It is a block diagram of information processing apparatus. It is a figure which shows a recording medium.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram for explaining an outline of a method for supporting the operation of a production facility for producing a product by the system operation support apparatus according to the present invention.

  As shown in FIG. 1, the system operation support apparatus 1 uses the production system model M, the facility capacity information C, and the resource usage information R within the period to determine the total production amount and resources of the production system and plant products in the period T. A graph showing the relationship between the total consumption and the total consumption. The production system model M represents how the production system is configured. The equipment capability information C represents the equipment capacity of the resource supply equipment, the production equipment, and the supply path of resources and products among the production systems. The user refers to the graph displayed and displayed to optimize the operation of the production facility.

  In the following, the system operation support apparatus 1 of FIG. 1 is exemplified by a case where optimization is intended for a production system that supplies gas as a resource and produces steam (generates steam) using the supplied gas. This will be described in detail.

<First Embodiment>
FIG. 2 is a configuration diagram of the grid operation support apparatus 1 according to the present embodiment. The system operation support apparatus 1 shown in FIG. 2 includes an in-system production capacity calculation unit 11 and a visualization unit 12, and based on information input from the input / output device 5, the total production amount of steam in the production system A graph representing the relationship with the total gas consumption is created and output to the input / output device 5.

  The system operation support apparatus 1 receives the production system model M, the facility capability information C, and the in-period resource use information R from the input / output device 5. First, with reference to FIGS. 3 to 7, the information received by the system operation support apparatus 1 will be specifically described.

FIG. 3 is a diagram illustrating a production system model M.
In the production system model M shown in FIG. 3, the gas supply facility energy1 supplies gas. The gas storage facility holder1 temporarily stores the gas supplied from the gas supply facility, and the gas is supplied to the three steam generation facilities supply1 to supply3 via the gas storage facility. The three steam generating facilities consume gas and generate steam. The steam generated in each steam generating facility is collected in the steam transport facility trans1 and supplied to the steam using facility demand1 through the steam transport facility. Thus, the steam is used in the steam using facility.

Each device constituting the production system has different input terminals u1 to u3 and output terminals y1 to y3.
The system operation support apparatus 1 holds the connection relationship and input / output terminals of these component devices as the production system model M based on the input information.

  FIG. 4 is a diagram illustrating the facility capability information C used by the system operation support apparatus 1 according to the present embodiment. This shows the relationship between the amount of generated steam and the amount of gas consumed for each of the three steam generating facilities supply1 to supply3 that generate steam for use in the steam using facility demand1, which is a production facility.

  Each steam generation facility has an operating range, that is, a lower limit and an upper limit of the amount of steam that can be generated. For example, in supply 3, the operating range is 2 [t / h] or more and 8 [t / h] or less.

In addition, the efficiency of the steam generation facility is different, and the slope of the graph of FIG. 4 represents this.
The grid operation support apparatus 1 accepts input of these information represented in the graph of FIG. 4 and holds this as facility capability information C.

FIG. 5 is a diagram for explaining in-period resource use information R used by the grid operation support apparatus 1 according to the present embodiment.
As shown in FIG. 5, in the present embodiment, as the in-period resource usage information R, the predetermined period T, the remaining amount Si of the resource i at the start of the period T, the planned supply amount Fi of the resource i in the period T The lower limit Li and the upper limit Ui of the accumulated amount of the resource i after the elapse of the period T are included.

  Among these, for the period T, the user sets an arbitrary value desired, for example, 0-24 o'clock, 0-12 o'clock, 0-6 o'clock or the like. For other conditions (Si, Fi, Li, and Ui), appropriate values are set according to the use of the devices that make up the production system and the situation in which they are used (conditions to be analyzed by the user).

  The system operation support apparatus 1 holds the input information as in-period resource use information R, and the in-system production capacity calculation unit 11 uses the in-period resource use information R to produce products in the production system. That is, an equation representing the relationship between the total amount of steam production and the total consumption of resources i, that is, gas is calculated.

FIG. 6 is a diagram illustrating a specific example R1 of the in-period resource usage information R in the present embodiment.
The in-period resource usage information R1 illustrated in FIG. 6 includes three in-period resource usage information, Case 1 to Case 3. Of these, the period T is common to Case 1 to Case 3, and T = 24 [h], and the in-period resource usage information R1 in FIG. 6 operates the production system for 24 hours from 0:00 to 24:00. Represents the conditions for supplying gas from the gas storage facility holder1.

Specifically, the gas accumulation remaining amount S of the gas accumulation facility holder1 at the start of the period T = 500 [Nm ³ ], and the lower limit L = 0 [Nm ³ ] of the accumulation amount of the gas accumulation facility holder1 after the period T has elapsed. The upper limit U = 1000 [Nm ³ ] is also common in each case.

In the example of FIG. 6, the condition that differs depending on the case is the planned gas supply amount F in the period T. It is 6000 [Nm ³ ] in Case 1, 15360 [Nm ³ ] in Case 2, and 24000 [Nm ³ ] in Case 3.

  For example, unlike a device such as a generator that varies the output value, the equation that expresses the relationship between the total production of steam and the total consumption of gas depends on the characteristics of the gas storage facility holder1 Come different. This will be described with reference to FIG.

  FIG. 7 is a diagram exemplifying a change over time in the amount of gas stored in the gas storage facility holder1 when steam is generated using gas as a resource in the production system. The characteristics of the gas storage facility will be described with reference to FIG.

  The gas storage facility holder1 receives the gas supply from the gas supply facility energy1, stores the gas in its own device, and supplies the stored gas to the steam generation facilities supply1 to supply3. For this reason, as schematically shown in FIG. 7, the remaining amount of gas in the gas storage facility varies during a period T during which the gas is supplied to the steam generation facility. Note that the maximum value max and the minimum value min of the gas accumulation remaining amount during the supply of gas are determined from the equipment capacity of the device.

  In addition, as described in the description of FIG. 4, the operating range and efficiency of each steam generating facility are different. For this reason, even if the amount of gas to be finally supplied to the three steam generating facilities is a predetermined value (the planned gas supply amount F), the gas storage facility at the start of gas supply (start timing) The remaining amount S of accumulated gas affects the relationship between the desired total production amount of steam and the total consumption amount of gas.

  Furthermore, in consideration of supplying gas to the steam generation facility after the period T, the accumulated amount of gas is shown in FIG. 7 as a curve indicated by a broken line around the time period T (end timing). A gas supply method that lowers the gas to near the minimum value is not desirable. As indicated by a solid line in FIG. 7, it is desirable that the predetermined remaining amount is within a predetermined range (lower limit L to upper limit L) when the period T elapses.

  Therefore, in the present embodiment, as shown in FIG. 5 and the like, the period T, the planned supply amount F, and the remaining gas accumulation at the start of the period T are used as the resource utilization information R within the period representing the characteristics of the gas storage facility holder1. The configuration includes the amount S and the lower limit U and the upper limit L of the accumulated amount of gas at the end. Then, in addition to the production system model M and the facility capacity information C, the resource utilization information R within the period is used to calculate the relationship between the total production amount of steam and the total consumption amount of gas during the period T, so that the gas storage facility holder1 The relationship between the total production of steam and the total consumption of gas, taking into account the characteristics of

  More specifically, when the production system model M, the facility capacity information C, and the in-period resource use information R are input, the in-system production capacity calculation unit 11 of the system operation support apparatus 1 includes the in-period resources. In the period T according to the usage information R, specifically, the planned supply amount F, the remaining amount S of gas at the start of the period T, and the remaining amount of gas when the period T elapses (within the range from the lower limit L to the upper limit U). A conditional expression that represents the amount of gas that can be used and a conditional expression that represents the amount of steam that can be produced using the gas amount are generated. The amount of gas that can be used by the production system during the period T refers to the total amount of gas output from the output terminals y1 to y3 in FIG. 3 by the gas storage facility holder1 during the period T (total of holder1_y1 to holder1_y3).

  At the same time, the in-system producible quantity calculation unit 11 is an expression representing the relationship between the total production amount of steam and the total consumption amount of gas for the input production system model M, facility capacity information C, and in-period resource utilization information R. Is calculated using a conditional expression representing the available amount of gas obtained. The expression representing the relationship between the desired total production of steam and the total consumption of gas is a first-order predicate generated by generating a first-order predicate logical expression including a conditional expression representing the obtained amount of available gas. It is obtained by deleting the quantifier from the logical expression. The visualization unit 12 of the system operation support apparatus 1 calculates a logical expression from a logical expression that represents the relationship between the total amount of steam that can be produced and the total consumption of gas in the period T obtained by the in-system production capacity calculation unit 11. Draw a range where holds in the graph.

  The method of generating the first order predicate logical expression and the method of obtaining the logical expression from the quantifier are as described in International Publication No. 2014/129470 (Patent Document 1). A description will be given along an example.

The in-system production capacity calculation unit 11 includes a first-order predicate logical expression generation unit and a quantifier elimination unit.
The first-order predicate logical expression generation unit includes the first mathematical expression group that represents the amount of gas that can be used in the period T, and the supply capacity or production capacity for the gas supply facility, the gas storage facility, the steam generation facility, and the supply route Is generated. The first mathematical formula group is generated by using the resource usage information R within the period. The second mathematical formula group is generated using the production system model M, the facility capacity information C, and the in-period resource usage information R. Then, the first-order predicate logical expression is generated by combining the two mathematical formula groups by logical product and assigning existence symbols to the state variables included in the first and second mathematical expression groups.

The quantifier elimination unit processes the first-order predicate logical expression by the quantifier elimination method to obtain a desired logical expression.
FIG. 8A and FIG. 8B are diagrams showing the first-order predicate logical expression Ψ1 generated by the in-system producible quantity calculation unit 11. Here, the first-order predicate logical expression ψ1 generated by using the information set as case 1 among the in-period resource usage information R1 in FIG. 6 is shown. The information of case 1 in FIG. 6 is represented by using a symbol “R1-1”.

  Of the first-order predicate logical expression ψ1 shown in FIGS. 8A and 8B, the conditional expression (4) corresponds to the first mathematical expression group, and the other expressions (2) to (3) and (5) to (5) The conditional expression 9) corresponds to the second mathematical expression group. The expression (1) is an expression in which an existence symbol is added to the state variable assigned thereto.

  Among the conditional expressions of the gas storage facility holder1 of (4) constituting the first mathematical expression group, the variable “holder1_x1” appearing in the first expression “0 = holder1_x1−500” is the gas of the gas storage facility at the start of the period T. Is the remaining amount (= S). The variable “holder1_x2” that appears in the second equation and the like is the remaining amount of gas stored in the gas storage facility (within the range from the lower limit L to the upper limit U) when the period T elapses. The third expression “0 <= holder1_x2” and the fourth expression “0 <= 1000−holder1_x2” indicate that the remaining amount of accumulated gas when the period T elapses is the lower limit L = 0 or more, and the upper limit U = 1000 or less. It represents that.

  As shown in the conditional expression (4), in the present embodiment, the amount of gas that can be used in the period T (holder1_y1 to holder1_y3) is expressed as the gas at the end of the period T according to the resource availability information R1 within the period. The remaining amount of gas in the storage facility holder1 is determined by the first equation group using the lower limit U to the upper limit L.

  With respect to the conditional expressions (2) to (3) and (5) to (9) that constitute the second mathematical expression group, the production system model M, the facility capacity information C, and the in-period resource utilization information R1-1 are used. Generated from constraints on equipment and supply routes.

The in-system producible quantity calculation unit 11 combines the generated expressions (2) to (9) with a logical product, and adds information related to the assignment of the quantifier of (1) to the first-order predicate logical expression Ψ1 is generated.
As shown in FIGS. 8A and 8B, the first-order predicate logical expression Ψ1 generated is the gas supply facility F at the start and end of the period T, the supply period T of the gas, and the supply period T from the gas storage facility. Depends on the remaining amount S, U, L, etc. That is, it can be seen that the relationship between the total production amount of steam and the total consumption amount of gas obtained by processing the first-order predicate logical expression ψ1 depends on the resource utilization information R within the period (in the example, information R1-1). .

FIG. 9 is a diagram illustrating a logical expression Φ1 obtained by processing the first order predicate logical expression ψ1 of FIGS. 8A and 8B by the limited sign erasing unit using the quantifier elimination method.
The limit symbol erasing unit of the in-system producible quantity calculating unit 11 deletes the limit symbol from the first-order predicate logical expression Ψ1, and obtains the logical expression shown in FIG. The logical expression of FIG. 9 represents the relationship between the total consumption amount of gas, that is, the total amount of gas energy1_y1 supplied from the gas supply facility energy1, and the total production amount of steam, that is, the total amount of steam used in the steam using facility demand1, demand1_u1. ing.

  As described above, the equation in FIG. 9 corresponds to the information R1-1 in case 1 in the in-period resource usage information R1 in FIG. For cases 2 and 3, the first-order predicate logical expressions Ψ2, Ψ3 can be generated by the same method as described above, and the quantifiers can be eliminated to obtain the logical expressions Φ2, Φ3, respectively.

  10 to 12 are diagrams visualizing the logical expressions Φ1 to Φ3 obtained for each of Case 1 to Case 3 of the in-period resource usage information R1. The horizontal axis represents the total production demand1_u1 of the steam within the period T, and the vertical axis represents the total consumption energy1_y1 of the gas consumed during the production of the steam within the period T.

In case 1, the planned supply amount F is 6000 [Nm ³ ], and therefore, as shown in FIG. In the case 2, the planned supply amount F is 15360 [Nm ³ ] and the case 3 is 24000 [Nm ³ ]. Therefore, as shown in FIG. 11 and FIG. It has become.

  The case 3 graph of FIG. 12 includes the case 2 graph of FIG. 11, and the case 2 graph of FIG. 11 includes the case 1 graph of FIG. This is because, as shown in FIG. 6, in the in-period resource use information R1 in the example, conditions other than the planned supply amount F are set to be the same in any case.

  Taking the graph of case 2 in FIG. 11 as an example, even if the total consumption of gas on the vertical axis is the same, there is a range in the total production of steam on the horizontal axis that can be taken. As shown in the graph of the facility capacity information C in FIG. 4, there is a difference in efficiency (slope of each graph in FIG. 4) depending on the steam generation facilities supply 1 to supply 3. Therefore, when viewed comprehensively, between efficient operation (a large amount of steam generation (production amount)) and inefficient operation (a small amount of steam generation (production amount)). It shows that a width occurs.

Further, even if the total amount of steam consumption on the horizontal axis is the same, the total amount of gas consumption on the vertical axis varies. This is because, in addition to the difference in efficiency of the steam generation facility, there is a range in the amount of gas stored in the gas storage facility holder1. That is, it is due to the effect that the gas accumulation amount of the gas accumulation facility holder1 at the end of the period T (24:00) can vary in the range of 0 to 1000 [Nm ³ ].

  As described above, according to the grid operation support apparatus 1 according to the present embodiment, the available resource amount in the period T using the in-period resource use information R in addition to the production system model M and the facility capability information C. Is used to calculate the relationship between the total production of products that can be produced and the total consumption of resources. The resource available amount in the period T is calculated from the resource usage information R within the period. About how the relationship between the total production of products and the total consumption of resources varies depending on the characteristics of the resource storage facilities used in the actual production system by using the resource utilization information R within the period Can also be visualized. This makes it possible to provide more useful information to the user in operation support for production systems including resource storage facilities.

<Second Embodiment>
In the first embodiment, the resource utilization information R within the period is used to obtain and visualize the relationship between the total production amount of the product of the production system and the total consumption amount of the resource in the predetermined period T. . In the present embodiment, the consumption amount of resources and the production amount of the product are further integrated step by step for each time unit obtained by subdividing the period T, the integrated amount time series is calculated, and the calculated integrated amount time series is calculated. Visualize also about.

  Hereinafter, a method of calculating the accumulated amount time series by the system operation support apparatus according to the present embodiment will be described. The configuration of the system operation support apparatus according to the present embodiment and the input production system model are as shown in FIGS. 2 and 3 and are as described above.

  FIG. 13 is a diagram for explaining the facility capability information C used by the system operation support apparatus 1 according to the present embodiment. Compared with the facility capability information in the first embodiment of FIG. 4, as the operating conditions of the steam generation facilities supply1 to supply3, the consumption gas amount corresponding to each predetermined generated steam amount is set as indicated by the dotted line in the figure. Yes.

In the example, for the steam generation facility supply1, the operating gas consumption is 150 [Nm ³ / h] when the steam generation amount is 5 [t / h]. For steam generation equipment supply2, the gas consumption is 240 [Nm ³ / h] for steam generation amount 6 [t / h], and for steam generation equipment supply ^{3, the} gas consumption is 5 [t / h] An amount of 250 [Nm ³ / h] is set as an operating condition.

Under the operating conditions of the steam generation facility of the example, the total production demand1_u1 of the steam is 16 [t / h], and the total consumption of the gas is 640 [Nm ³ / h].
FIG. 14 is a diagram illustrating a gas consumption amount and a steam production amount when steam is generated (produced) using a gas under the operating conditions of the example, and a time series of those accumulated amounts. Here, the period T = 24 [h] is subdivided into units of one hour.

Table A shows the gas consumption energy1_y1 (unit: Nm ³ / h) and steam production demand1_u1 (unit: t / h) per hour under the example operating conditions. Table B shows an integrated time series in which gas consumption per hour (unit: Nm ³ ) and steam production (unit: t) are integrated step by step. The “time” in the figure represents the start time of the subdivided time (1 hour in the example). For example, the consumption amount of gas and the production amount of steam whose time is “0” in Table A are from 0 to 1 It represents the amount of gas consumed and the amount of steam produced in the hour before the hour.

As shown in FIG. 14, the integrated value of the gas consumption at the final time 23:00 (after 1 hour from 23:00 to 24:00) is 15360 [Nm ³ ]. This corresponds to the planned gas supply amount F in case 2 of FIG.

  The visualization unit 12 of the system operation support apparatus 1 according to the present embodiment adds a graph representing the relationship between the total production amount of steam and the total consumption amount of gas visualized in the first embodiment, and FIG. The accumulated time series of Table B is displayed.

FIG. 15 is a diagram in which the integrated time series of Table B of FIG. 14 is further superimposed on the graph of case 2 of FIG. 11 and visualized.
A is a graph showing the relationship between the total production amount of steam and the total consumption amount of gas in the period T, and the region represented by the graph of A is the region represented by the graph of FIG. 11 referred to in the first embodiment. Matches.

B represents an integrated time series in which gas consumption and steam production are integrated step by step, and this corresponds to a plot of Table B in FIG.
Note that C is a curve representing the amount of steam produced when steam is generated most efficiently with respect to the amount of gas consumed, and this is indicated by a broken line in FIG.

According to FIG. 15, even when the total gas consumption during period T is the same at 15360 [Nm ³ ], B showing the operation when the steam production amount is fixed to a predetermined value is the most efficient operation. Compared with C shown, it can be seen that there is a gap of nearly 100 [t] in the amount of steam generated as a product.

  Thus, according to the system operation support apparatus 1 according to the present embodiment, the accumulated amount time series and the production possible amount are displayed on one graph, and these can be compared. Therefore, it is easy to visually evaluate the efficiency and optimality of operation, and it is easy to determine whether or not optimal operation has been realized.

<Third Embodiment>
In the in-period resource usage information R according to the first and second embodiments, it is defined on the condition that the remaining amount of resources (gas) accumulated at the end of the period T falls within a predetermined range. On the other hand, in the present embodiment, the in-period resource usage information R is defined on the condition that the remaining amount of resources (gas) accumulated at the end of the period T becomes a predetermined target value.

  Below, the system operation support apparatus according to the present embodiment obtains a logical expression that represents the relationship between the total production amount of the product and the total consumption amount of the resource in the production system by using the resource utilization information R within the period, The visualization method will be specifically described focusing on differences from the above embodiment.

  Note that the configuration of the grid operation support apparatus, the production system model and the facility capability information input to the grid operation support apparatus are as shown in FIGS. Omit.

FIG. 16 is a diagram for explaining in-period resource use information R used by the grid operation support apparatus 1 according to the present embodiment.
Compared with the configuration of the in-period resource usage information used in the first embodiment of FIG. 5, the first embodiment includes the lower limit Li and the upper limit Ui of the accumulated amount of the resource i after the period T has elapsed. The difference is that the target value Ei of the accumulated amount of the resource i after the elapse of the period T is included.

FIG. 17 is a diagram showing a specific example of the in-period resource usage information R in the present embodiment.
The in-period resource usage information R2 shown in FIG. 17 includes three cases 1 to 3 regarding conditions for supplying gas from the gas storage facility holder1 when the production system is operated for 24 hours from 0:00 to 24:00. Represents.

Gas accumulation remaining amount S of gas accumulation facility holder1 at the start of period T and period T = 1000 [Nm ³ ], planned gas supply amount F of period T = 9600 [Nm ³ ], and case 1 to case 3 Is common.

The condition that varies depending on the case in the example of FIG. 17 is the target value E of the accumulated amount of gas at the end of the period T (24:00). In case 1, E = 0 [Nm ³ ], in case 2 E = 1000 [Nm ³ ], and in case 3, E = 2000 [Nm ³ ].

FIG. 18 is a diagram exemplifying a change over time in the amount of gas stored in the gas storage facility holder1 when steam is generated using gas as a resource in the production system.
The curve representing the relationship between the time and the gas supply amount is the same as that in FIG. 7 referred to in the first embodiment. In FIG. 7, the remaining amount of gas in the gas storage facility when the period T elapses (24:00) is determined in the range from the lower limit L to the upper limit U, whereas in FIG. It is different.

  Even in the in-period resource usage information R2 in which the gas accumulation amount at the time T has elapsed is expressed by the target value E, the characteristics of the gas storage equipment holder1 are appropriately set as in the in-period resource usage information of the first embodiment. It represents. Therefore, the system operation support apparatus 1 according to the present embodiment uses the in-period resource utilization information R2 in FIG. 18 in addition to the production system model M in FIG. 3 and the facility capacity information C in FIG. Calculate the relationship with the total gas consumption.

  When the production system model M, the facility capability information C, and the in-period resource use information R are input, the in-system production capacity calculation unit 11 of the system operation support device 1 performs the in-period resource as in the first embodiment. From the usage information R, a conditional expression representing the amount of gas that can be used by the production system in the period T (total of holder1_y1 to holder1_y3) is generated. However, in the present embodiment, the conditional expression is generated from the planned supply amount F, the remaining amount S of gas at the start of the period T, and the target value E of the remaining amount of gas when the period T elapses.

  At the same time, the in-system production capacity calculation unit 11 represents the relationship between the total production amount of steam and the total consumption amount of gas for the input production system model M, facility capacity information C, and in-period resource utilization information R. The equation is calculated using a conditional expression that represents the available amount of the obtained gas. The equation that expresses the relationship between the desired total production amount of steam and the total consumption amount of gas is generated by generating a first-order predicate logical expression using a conditional expression that expresses the amount of available gas obtained. It is obtained by eliminating the quantifier from the predicate formula.

  19A and 19B are diagrams showing the first-order predicate logical expression Ψ1 generated by the in-system production possible quantity calculation unit 11. Here, the first-order predicate logical expression Ψ1 generated by using the information set as case 2 in the in-period resource use information R2 in FIG. 17 is shown.

  The equations (11) to (19) shown in FIGS. 19A and 19B are similar to the equations (1) to (9) in FIGS. 8A and 8B, respectively. It represents a conditional expression regarding information, a conditional expression regarding each device, and a conditional expression regarding a production system. The conditional expression (14) corresponds to the first mathematical expression group representing the usable amount of gas in the period T. (12) to (13) and (15) to (19) the second formula group in which the conditional expressions represent the supply capacity or production capacity for the gas supply facility, the gas storage facility, the steam generation facility, and the supply path. It corresponds to. The expression (1) is an expression in which an existence symbol is added to the state variable assigned thereto.

  Among the expressions (11) to (19), the target value E is set as the resource utilization information within the period, not the lower limit L and the upper limit U of the accumulated amount of gas after the elapse of the period T. The expressions (12) and (14) are different from those in FIGS. 8A and 8B.

In particular, in the conditional expression of the gas storage facility holder1 in (14), the expression “0 = holder1_x2-E” is set. This represents that the accumulated gas remaining amount holder1_x2 (= E) becomes the target value “0 [Nm ³ ]” when the period T elapses (24:00).

  As shown in the conditional expression (14), in this embodiment, the amount of gas that can be used in the period T (holder1_y1 to holder1_y3) is stored as the gas accumulation at the end of the period T according to the in-period resource availability information R2. The target value E of the remaining amount of gas in the equipment holder 1 is used to determine the first mathematical group.

  As described in the first embodiment, other conditional expressions are generated from the constraint conditions of each device and supply route from case 2 of the production system model M, the facility capacity information C, and the in-period resource usage information R2. To do. Then, the in-system producible quantity calculation unit 11 combines the generated expressions (12) to (19) by logical product, and adds information regarding the assignment of the quantifier of (11) to the first order predicate. A logical expression Ψ1 is generated.

  The first-order predicate logical expression Ψ1 shown in FIGS. 19A and 19B also depends on the in-period resource usage information R (R2 in the example), similarly to the first-order predicate logical expression shown in FIGS. 8A and 8B. Therefore, it can be seen that the relationship between the total production amount of steam and the total consumption amount of gas obtained by processing the first-order predicate logical expression ψ1 depends on the in-period resource use information R (R2).

  The in-system producible quantity calculation unit 11 of the system operation support device 1 generates the first-order predicate logical expressions Ψ2 and Ψ3 in the same manner for the other cases 2 and 3 of the in-period resource use information R2 in FIG. To do. For the generated first-order predicate logical expressions Ψ1 to Ψ3, the quantifier erasure is performed by the quantifier elimination method, so that the logical expression Φ1 representing the relationship between the total production demand1_u1 of steam and the total consumption energy1_y1 of gas, respectively. Obtain ~ Φ3.

  20 to 22 are diagrams visualizing the logical expressions Φ1 to Φ3 obtained for the cases 1 to 3 of the in-period resource usage information R2. 10 to 12, the horizontal axis represents the total steam production demand1_u1 within the period T, and the vertical axis represents the total gas consumption energy1_y1 consumed during the steam production within the period T. .

When the results visualized in cases 1 to 3 in FIGS. 20 to 22 are compared with each other, the gas supply plan amount F = 9600 [Nm ³ ], so the limit of the total gas consumption energy1_y1 on the vertical axis is The limit is around 9600 [Nm ³ ].

FIG. 23 is a diagram illustrating a result of displaying Case 1 to Case 3 on the graph at the same time.
As described above, in the case 1 to the case 3, the accumulation amount of the gas accumulation facility after the lapse of the period T is different. Since other conditions are the same in the in-period resource use information R2, the amount of steam that can be produced (demand1_u1) decreases as the remaining amount of gas accumulated at the time when the period T elapses. Also, the lower limit of the amount of gas consumed (energy1_y1) is reduced. This is because the amount of gas that can be used to generate steam decreases as the target value of the gas storage amount in the gas storage facility holder1 increases after the period T has elapsed, and the gas is stored in the gas storage facility. This is because the amount of gas required for the process increases. As shown in FIG. 23, when three cases are displayed on one graph, these points can be easily recognized.

  As described above, even when the target value E of the amount of gas stored in the gas storage facility holder1 at the end of the period T is set as the in-period resource usage information R as in the present embodiment, The same effect as in the embodiment is obtained.

  Note that the grid operation support apparatus 1 according to the present embodiment also subdivides the period T and gradually determines the resource consumption and the product production for each time unit, as in the second embodiment. It is good also as a structure which calculates the integrated amount time series which integrated, and visualizes with the production possible amount.

  Incidentally, the system operation support apparatus 1 of FIG. 2 can be configured using, for example, an information processing apparatus (computer) as shown in FIG. 24 includes a CPU (central processing unit) 1001, a memory 1002, an input device 1003, an output device 1004, an external storage device 1005, a medium drive device 1006, and a network connection device 1007, which are connected to each other via a bus 1008. It is connected.

  The memory 1002 includes, for example, a read only memory (ROM), a random access memory (RAM), and the like, and stores programs and data used for processing. The CPU 1001 performs necessary processing by executing a program using the memory 1002.

The in-system production capacity calculation unit 11 and the visualization unit 12 in FIG. 2 correspond to functions realized by executing a program stored in the memory 1002.
The input device 1003 is, for example, a keyboard, a pointing device, a touch panel, and the like, and is used for inputting instructions and information from an operator such as a network administrator. The output device 1004 is, for example, a display, a printer, a speaker, or the like, and is used for outputting an inquiry to an operator, an alarm, a processing result, and the like.

  The external storage device 1005 is, for example, a magnetic disk device, an optical disk device, a magneto-optical disk device, a tape device, or the like. The information processing apparatus stores the program and data in the external storage device 1005 and loads them into the memory 1002 for use as necessary.

  The medium driving device 1006 drives a portable recording medium 1009 and accesses the recorded contents. The portable recording medium 1009 is an arbitrary computer-readable recording medium such as a memory card, a flexible disk, a CD-ROM (compact disk read only memory), an optical disk, and a magneto-optical disk. The operator stores the program and data in the portable recording medium 1009 and loads them into the memory 1002 for use as necessary.

  The network connection device 1007 is connected to an arbitrary communication network such as a local area network (LAN) or the Internet, and performs data conversion accompanying communication. The information processing apparatus receives the program and data from an external apparatus via the network connection apparatus 1007 as necessary, and loads them into the memory 1002 for use.

  FIG. 25 shows a computer-readable recording medium capable of supplying a program and data to the information processing apparatus of FIG. Programs and data stored in the portable recording medium 1009 and the database 1103 of the server 1101 are loaded into the memory 1002 of the information processing apparatus 1102. The server 1101 generates a carrier signal for carrying the program and data, and transmits the carrier signal to the information processing apparatus 1102 via an arbitrary transmission medium on the network. The CPU 1001 executes the program using the data and performs necessary processing.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, all the constituent elements shown in the embodiments may be appropriately combined. Furthermore, constituent elements over different embodiments may be appropriately combined. It goes without saying that various modifications and applications are possible without departing from the spirit of the invention.

1 System Operation Support Device 5 Input / Output Device 11 In-system Production Quantity Calculation Unit 12 Visualization Unit

Claims (10)

A resource supply facility for supplying resources, a resource storage facility for storing resources, a production facility for consuming resources supplied from the resource supply facility and the resource storage facility to produce products, and a supply path for resources and products A production system operation support device for supporting the operation of the production facility for a production system having
A model of the production system, facility capacity information indicating the facility capacity of the resource supply facility, the production facility and the supply path, a remaining amount of resources at the start of a predetermined period, and the resource supply in the predetermined period When the resource usage information within the period that represents the planned supply of resources from the facility is entered,
In addition to obtaining the amount of resources that can be used in the predetermined period according to the resource usage information in the period, the model of the production system, the facility capacity information, and the resource usage information in the period An in-system production capacity calculation unit for calculating a relationship between the total production amount of the product that can be produced using the available amount of the resource within the predetermined period and the total consumption amount of the resource;
A visualization unit for visualizing the calculation result by the in-system production capacity calculation unit as a graph;
A system operation support apparatus comprising: The in-system production possible quantity calculation unit generates a first-order predicate logical expression using the available quantity of the resource, the relation between the total production quantity of the product and the total resource quantity to be consumed, and eliminates the quantifier By calculating a logical expression obtained by eliminating the quantifier from the first-order predicate logical expression using the method,
The system operation support apparatus according to claim 1, wherein the visualization unit visualizes a range in which the logical expression is established as a graph. The in-system production capacity calculation unit
Using the resource usage information within the period, a first mathematical formula group representing the usable amount of the resource for the predetermined period is generated, and the production system model, the facility capacity information, and the resource within the period Using usage information, generate a second set of mathematical expressions that represent the supply capacity or production capacity of the resource supply facility, the resource storage facility, the production facility, and the supply path,
Combine the first and second mathematical formula groups by logical product, and supply capacity of the resource supply equipment, the resource storage equipment, the production equipment, and the supply path included in the first and second mathematical formula groups, or 3. The system operation support apparatus according to claim 2, wherein the first-order predicate logical expression is generated by adding an existence symbol indicating that a variable indicating a state of production capacity exists. The in-system producible quantity calculation unit can supply the usable quantity of the resource within a range in which the remaining amount stored in the resource storage facility at the end of the predetermined period falls within a predetermined upper limit and lower limit. The system operation support apparatus according to any one of claims 1 to 3, wherein the system operation support apparatus is obtained using a predetermined amount. In the process for obtaining the available amount of the resource, the in-system production available amount calculation unit includes the planned supply amount, the accumulated remaining amount of the resource at the start of the predetermined period, 5. The system operation support apparatus according to claim 4, wherein the first mathematical expression group is generated using the predetermined upper limit and lower limit of the remaining amount of resources stored at the end of the predetermined period. The in-system producible amount calculation unit obtains the usable amount of the resource by using an amount with which the remaining amount in the resource storage facility at the end of the predetermined period becomes a predetermined target value. The system operation support apparatus according to any one of claims 1 to 3. In the process for obtaining the available amount of the resource, the in-system production available amount calculation unit includes the planned supply amount, the accumulated remaining amount of the resource at the start of the predetermined period, The system operation support apparatus according to claim 6, wherein the first mathematical formula group is generated using the target value of the remaining amount of resources accumulated at the end of the predetermined period. An integrated time series calculating unit that calculates the integrated amount time series by stepwise integrating the consumption amount of the resource and the production amount of the product in time units obtained by subdividing the predetermined period;
The grid operation support apparatus according to any one of claims 1 to 7, wherein the visualization unit further displays the integrated amount time series. A resource supply facility for supplying resources, a resource storage facility for storing resources, a production facility for consuming resources supplied from the resource supply facility and the resource storage facility to produce products, and a supply path for resources and products A production system operation support program for causing an information processing apparatus to execute a production system operation support process for supporting the operation of the production facility for a production system having
A model of the production system, facility capacity information indicating the facility capacity of the resource supply facility, the production facility and the supply path, a remaining amount of resources at the start of a predetermined period, and the resource supply in the predetermined period When the resource usage information within the period that represents the planned supply of resources from the facility is entered,
In addition to obtaining the amount of resources that can be used in the predetermined period according to the resource usage information in the period, the model of the production system, the facility capacity information, and the resource usage information in the period And calculating the relationship between the total production amount of the product that can be produced using the available amount of the resource within the predetermined period and the total consumption amount of the resource,
Visualizing the result of the calculation as a graph;
System operation support program characterized by this. A resource supply facility for supplying resources, a resource storage facility for storing resources, a production facility for consuming resources supplied from the resource supply facility and the resource storage facility to produce products, and a supply path for resources and products A production system operation support method for supporting the operation of the production facility for a production system having
A model of the production system, facility capacity information indicating the facility capacity of the resource supply facility, the production facility and the supply path, a remaining amount of resources at the start of a predetermined period, and the resource supply in the predetermined period When the resource usage information within the period that represents the planned supply of resources from the facility is entered,
In addition to obtaining the amount of resources that can be used in the predetermined period according to the resource usage information in the period, the model of the production system, the facility capacity information, and the resource usage information in the period And calculating the relationship between the total production amount of the product that can be produced using the available amount of the resource within the predetermined period and the total consumption amount of the resource,
Visualizing the result of the calculation as a graph;
System operation support method characterized by the above.