JP6399235B2 - Water distribution planning system, water distribution planning method, and program recording medium - Google Patents

Description

  The present invention relates to a water distribution plan for a water supply facility.

  Control of power consumption in water supply facilities is required. As a method for suppressing power consumption, for example, a water system composed of water facilities such as water purification plants and pipelines connecting each facility is mathematically modeled, and power efficiency is high by solving mathematical optimization problems A method for creating an operation plan is known (for example, see Patent Document 1).

JP 2012-197629 A

  Specifically, the operation plan for the entire water system is subdivided into a plurality of plans. For example, a water supply system operation plan may include a water purification plan and a pump operation plan. Each subdivided plan has a time scale suitable for each plan. For example, when planning the amount of purified water at a water purification plant, it can be said that it is desirable to apply a relatively large time scale, taking into consideration the daily water demand. On the other hand, when planning the operation of individual pumps, it can be said that it is desirable to apply a relatively small time scale in consideration of changes in the water demand at each demand point in each time zone. However, the technique described in Patent Document 1 does not plan a cost model for each of a plurality of time scales. Therefore, with the technique described in Patent Document 1, it is not possible to apply a cost model suitable for each of a subdivided plan, in other words, a different type of plan from the viewpoint of time.

  The objective of this invention is enabling it to evaluate appropriately the power consumption in a water supply facility.

  The water distribution planning system according to one aspect of the present invention is a plurality of cost indicators each showing a relationship between a water distribution amount per unit time and a power consumption amount for each of a plurality of water supply facilities, and different for each corresponding time scale. A plurality of plans for controlling each of the plurality of water facilities, and a plurality of plans represented on a time scale according to the plans, the plurality of determined cost indicators Planning means for determining using a cost index corresponding to a time scale corresponding to the plan.

  The water distribution planning method according to another aspect of the present invention includes a plurality of costs for each of a plurality of water supply facilities, each indicating a relationship between a water distribution amount per unit time and a power consumption amount, and different for each corresponding time scale. A plurality of plans for determining an index and controlling each of the plurality of water supply facilities, wherein a plurality of plans represented by a time scale according to the plan are selected from the determined plurality of cost indices It is determined using a cost index corresponding to the time scale according to the plan.

  According to still another aspect of the present invention, there is provided a program recording medium for a computer, for each of a plurality of water facilities, each indicating a relationship between a water distribution amount per unit time and a power consumption amount, and for each corresponding time scale. A process for determining a plurality of different cost indicators and a plurality of plans for controlling each of the plurality of water facilities, wherein a plurality of plans represented on a time scale according to the plans are determined. A computer-readable program that executes a process determined using a cost index corresponding to a time scale corresponding to the plan among a plurality of cost indices is recorded.

  According to the present invention, it is possible to appropriately evaluate the power consumption in a water supply facility.

FIG. 1 is a block diagram illustrating an example of a configuration of a water distribution planning system. FIG. 2 is a block diagram showing an example of the configuration of the water distribution control system. FIG. 3 is a schematic diagram showing an example of the configuration of a water distribution network. FIG. 4 is a flowchart showing an example of operation in the water distribution control system. FIG. 5 is a flowchart illustrating an example of processing for determining a cost model. FIG. 6 is a schematic diagram illustrating an example of a simulation result of the water distribution amount per unit time and the power consumption amount. FIG. 7 is a schematic diagram illustrating an example of the first cost model. FIG. 8 is a schematic diagram illustrating an example of the second cost model. FIG. 9 is a flowchart illustrating an example of a process for determining a water purification plan. FIG. 10 is a flowchart illustrating an example of a process for determining a pump operation plan. FIG. 11 is a diagram illustrating an example of a water purification plan determination process. FIG. 12 is a diagram illustrating an example of a process for determining a pump operation plan. FIG. 13 is a block diagram illustrating an example of the configuration of the water distribution planning unit. FIG. 14 is a block diagram illustrating a hardware configuration of a computer device that implements a water distribution planning system or a water distribution control system.

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a water distribution planning system 100 according to an embodiment of the present invention. The water distribution planning system 100 is an information processing system for determining a water distribution plan regarding a plurality of water supply facilities. The water distribution planning system 100 includes a determination unit 110 and a planning unit 120.

  Here, the water distribution plan refers to an operation plan for water facilities constituting the water distribution network or equipment included in the facilities. The business operator manages the amount of purified water, the amount of water distributed, the amount of stored water, etc. in each water supply facility based on this water distribution plan. The water distribution plan may include, for example, a water purification plan related to the amount of purified water, a pump operation plan, and a water storage plan for a water storage facility (a reservoir, a water storage tank, etc.). Here, the total of such individual plans is called a water distribution plan.

  Moreover, a water supply facility means the facility for comprising a water distribution network and supplying water to a demand point. The water supply facility may include, for example, a water intake, a water purification plant, a water supply station, and the like. In this embodiment, the water supply facilities to be determined in the water distribution plan include facilities such as pumps and the like, and are facilities that require electric power for water distribution. Individual water supply facilities are connected to other water supply facilities by pipe lines (water pipes). That is, the water distribution network is a network in which water supply facilities are connected by pipe lines.

  The determination part 110 determines the cost parameter | index which shows the relationship between the amount of water distribution per unit time in a water supply facility, and power consumption. The determination part 110 determines the cost parameter | index according to each of several water supply facilities which comprise a water distribution network. That is, the cost index may be different for each water facility. For example, the cost index varies depending on the number and performance of pumps installed in the water supply facility. The cost index may be represented by a predetermined function or a lookup table.

  Moreover, the determination part 110 determines a some cost parameter | index regarding one water supply facility. The determination unit 110 determines a plurality of cost indexes corresponding to each of a plurality of time scales described later. The determination unit 110 may determine a cost index for each facility of the water supply facility.

  The planning unit 120 determines a water distribution plan using the cost index determined by the determination unit 110. The planning unit 120 determines a plurality of types of plans. The plurality of types of plans referred to here indicate plans with different targets (purposes) such as the water purification plan, the pump operation plan, and the water storage plan described above. The planning unit 120 may output plan information indicating the determined water distribution plan and provide it to other devices.

  Each plan has a predetermined time scale corresponding to the type of the plan. The time scale refers to a time scale of the plan such as “1 day unit”, “half day unit”, “1 hour unit”, and “30 minute unit”. The planning unit 120 determines each plan using a cost index corresponding to a time scale corresponding to each plan. For example, the planning unit 120 determines in units of one day if it is a water purification plan, and determines in units of 30 minutes if it is an operation plan of the pump, etc., on a time scale according to the nature and characteristics of each plan. Decide on a plan.

  According to the water distribution planning system 100 of the present embodiment, since a plurality of cost indexes corresponding to the time scale of the plan can be determined, a plurality of types of plans having different time scales are appropriately selected from the plurality of cost indexes. Can be determined using Thereby, the water distribution planning system 100 can use an appropriate cost index for each plan, and can appropriately evaluate the power consumption in the water supply facility.

[Second Embodiment]
FIG. 2 is a block diagram showing a configuration of a water distribution control system 200 according to another embodiment of the present invention. The water distribution control system 200 is an information processing system for determining a water distribution plan and controlling the water supply facilities constituting the water distribution network according to the determined water distribution plan. The water distribution control system 200 corresponds to one application example of the water distribution planning system 100 of the first embodiment. The water distribution control system 200 includes an input unit 210, a model determination unit 220, a water distribution plan unit 230, and a plan setting unit 240.

  The input unit 210 receives input of information. The input unit 210 acquires information via a network such as the Internet, for example. Alternatively, the input unit 210 may acquire information via an input device such as a keyboard. The specific form of the input unit 210 and the information acquisition route are not particularly limited. The input unit 210 may include a storage device that stores the acquired information.

  The model determination unit 220 corresponds to an example of the determination unit 110 of the first embodiment. The model determination unit 220 determines a cost model based on the pump information. The pump information represents the performance of each pump included in the water supply facility. For example, the pump information includes various standard values (capacity, head, efficiency, etc.) related to the pump. The cost model corresponds to an example of a cost index of the first embodiment. The cost model of this embodiment is represented by a function indicating the relationship between the amount of water distribution per unit time of the pump and the amount of power consumption.

  The model determination unit 220 determines a cost model for each of a plurality of time scales. Although the time scale of this embodiment is not limited to a specific value, in the following description, it is assumed that there are two types of “daily unit” and “15 minute unit”. Hereinafter, the time scale in units of one day is referred to as “first time scale”, and the cost model corresponding to the first time scale is referred to as “first cost model”. The time scale in units of 15 minutes is called “second time scale”, and the cost model corresponding to the second time scale is called “second cost model”.

  The water distribution planning unit 230 corresponds to an example of the planning unit 120 of the first embodiment. The water distribution planning unit 230 determines a water distribution plan using the cost model determined by the model determination unit 220. The water distribution plan of this embodiment includes at least a water purification plan at a water purification plant and a pump operation plan at each water supply facility. The water distribution planning unit 230 can determine a water distribution plan by an optimization technique using linear programming or mixed integer linear programming, which is generally well-known mathematical programming.

  More specifically, the water distribution planning unit 230 includes a first planning unit 231 and a second planning unit 232. The first planning unit 231 determines a water purification plan. The 1st plan part 231 determines the water purification plan represented by the 1st time scale using the 1st cost model. On the other hand, the second planning unit 232 determines a pump operation plan. The second planning unit 232 determines an operation plan represented by a second time scale using the second cost model.

  The plan setting part 240 sets the plan determined by the water distribution planning part 230 to the water supply facility according to each plan. For example, the plan setting unit 240 supplies plan information indicating the determined plan to the water supply facility to which the plan is applied. Alternatively, the plan setting unit 240 may remotely control the water facility based on the determined plan. The actual control of the water supply facility may be performed automatically or by an operator's operation.

  The configuration of the water distribution control system 200 is as described above. Below, operation | movement of the water distribution control system 200 is demonstrated using a specific example. However, the specific examples shown below are simplified for convenience of explanation.

  FIG. 3 is a schematic view illustrating the configuration of a water distribution network. This water distribution network includes water purification plants 11 and 12 and water supply stations 21 and 22 as water supply facilities to be determined by the plan. The water purification plants 11 and 12 and the water supply stations 21 and 22 are water supply facilities for supplying water to the demand points 41, 42, 43, and 44. Among these, the water supply stations 21 and 22 include water storage facilities. The branch points 31 and 32 are provided with valves and the like, and the flow paths can be changed as necessary. Moreover, the arrow in a figure has shown the direction of a pipe line and a water flow.

  Here, the demand point refers to one or a plurality of consumers. One demand point may correspond to a plurality of customers in a specific area, or may correspond to a specific customer (for example, a large customer such as a public facility or a commercial facility).

  The water purification plants 11 and 12 and the water supply stations 21 and 22 include one or more pump stations. Here, the pump station refers to equipment (pump equipment) that is attached to the water supply facility and is configured by one or a plurality of pumps. Here, the pumping station is provided for each pipeline, but the pumping station may be provided as equipment common to a plurality of pipelines, and the flow channel may be switched by a valve.

  Specifically, the water purification plant 11 includes pumping stations P1 and P2. The pump station P <b> 1 is a pump facility for supplying water to the demand point 41. On the other hand, the pumping station P <b> 2 is a pump facility for sending water to the water supply station 21. Similarly, the water purification plant 12 includes a pumping station P3, the water supply station 21 includes a pumping station P4, and the water supply station 22 includes pumping stations P5 and P6, respectively.

  In this example, the water distribution control system 200 determines the water purification plan of the water purification plants 11 and 12 and the operation plan of the pumping stations P1 to P6, respectively, and controls the water distribution in each facility. In addition, although description is abbreviate | omitted, the water distribution control system 200 may include control of the flow path in the branch points 31 and 32, and control of the water pressure in the demand points 41-44 in a water distribution plan.

  FIG. 4 is a flowchart showing an outline of the operation in the water distribution control system 200. First, in step S1, the model determination unit 220 determines a cost model. The model determining unit 220 determines a first cost model and a second cost model for each of the pump stations P1 to P6.

  FIG. 5 is a flowchart showing the process (step S1) for determining the cost model. In this process, the model determination unit 220 first determines the pump pressure (water head) necessary to satisfy the water pressure required at a predetermined demand point (step S11). The desired water pressure at the demand point is a parameter given via the input unit 210. For example, in the case of the pump station P1, the model determination unit 220 determines the pump pressure based on the water pressure required at the demand point 41.

Next, the model determination unit 220 calculates the power consumption necessary for water distribution at the pressure determined in step S11 by simulation (step S12). When the pump station includes a plurality of pumps, the model determination unit 220 executes a simulation while changing the combination of pumps to be operated, and identifies the combination of pumps that consumes the least amount of power with respect to the amount of water distribution. As a model equation of each pump used in this simulation, for example, the following equation (1) can be given.

Each character in Formula (1) shows the following parameters, respectively. The coefficient A and the efficiency η _Q are included in the pump information. Further, the efficiency η _Q can be expressed as a function that varies depending on the water flow rate Q.
Power: Power consumption [kW]
ρ: Water density [kg / m ³ ]
Q: Water flow rate [m ³ / s]
H: Pump pressure (water head) [m]
A: Predetermined coefficient η _Q : Pump efficiency

  FIG. 6 is a schematic diagram illustrating an example of a simulation result of the water distribution amount per unit time and the power consumption amount. This example shows a case where there are two pumps (hereinafter referred to as “pump A” and “pump B”, respectively) in the pump station. It is assumed that the pump B has a larger discharge amount per unit time than the pump A.

  In FIG. 6, a curve C1 shows the relationship between the amount of water distribution and the amount of power consumption when the pump A is used (hereinafter referred to as “first pattern”). A curve C2 shows the relationship between the amount of water distribution and the amount of power consumption when the pump B is used (hereinafter referred to as “second pattern”). A curve C3 shows the relationship between the water distribution amount and the power consumption when the pump A and the pump B are used at the same time (hereinafter referred to as “third pattern”).

  In the example shown in FIG. 6, there is a water distribution amount that can be distributed using either the first pattern or the second pattern. Specifically, when the water distribution amount per unit time is q1 to q2, water can be distributed using either the first pattern or the second pattern. In such a case, the model determination unit 220 may use a pattern with less power consumption among a plurality of patterns, or may use a pattern used at the time immediately before determining the plan. Good. For example, in the case where the water distribution amount is q1 to q2, the model determination unit 220 uses the first pattern when the first pattern is used at the immediately preceding time, and uses the second pattern at the immediately preceding time. If so, the second pattern may be used.

  When there are three or more pumps in the pump station, the model determination unit 220 may perform simulation for all possible combinations, or may perform simulation for only some appropriately selected combinations. May be executed. In addition, a plurality of pumps may not be used in combination, and each may be used alone.

  When the power consumption simulation is executed, the model determination unit 220 determines the first cost model and the second cost model, respectively (steps S13 and S14). Specifically, the model determining unit 220 determines each cost model as follows based on the simulation result calculated in step S12.

  FIG. 7 is a schematic view illustrating a first cost model according to the example of FIG. FIG. 8 is a schematic view illustrating a second cost model according to the example of FIG. In this example, the first cost model is represented by a function obtained by approximating the curves C1 to C3 with a single straight line. In other words, the first cost model represents the relationship between the water distribution amount and the power consumption amount in units of pumping stations. On the other hand, the second cost model is represented by a piecewise function obtained by approximating each of the curves C1 to C3 with a straight line. In other words, the second cost model represents the relationship between the amount of water distribution and the amount of power consumption in units of pumps (or units of pump combinations).

  Note that the first cost model and the second cost model are not necessarily represented by straight lines. For example, the second cost model may be obtained by approximating a curve represented by a plurality of high-order functions by a plurality of low-order functions. In addition, a specific method for approximating a curve (or higher order function) to a straight line (or lower order function) is not particularly limited, and any known method may be used.

  When the cost model is determined, in steps S2 and S3, the water distribution planning unit 230 determines a water purification plan and a pump operation plan, respectively. Specifically, the first planning unit 231 determines a water purification plan, and the second planning unit 232 determines a pump operation plan.

  FIG. 9 is a flowchart showing a process (step S2) for determining a water purification plan on a certain day. In this process, the 1st plan part 231 acquires the predicted value of the amount of water demand per day in the whole distribution network (Step S21). In other words, the 1st plan part 231 acquires the predicted value of the amount of water demand represented by the 1st time scale. The predicted value of water demand is a parameter given via the input unit 210. The predicted value of the daily water demand in the entire distribution network is obtained, for example, by integrating the predicted value of the daily water demand at each demand point.

  Next, the 1st plan part 231 acquires water distribution network information and restrictions on the applicable day (Step S22). The distribution network information is information describing the configuration and physical limits of the distribution network (particularly the pipeline). Moreover, the constraint conditions here are conditions set when there are facilities that cannot be used for reasons such as construction in the water distribution network or when water intake restrictions are imposed.

  The 1st plan part 231 determines the water purification plan per day (namely, 1st time scale) using the information acquired in Steps S21 and S22, and the 1st cost model (Step S23). Specifically, the 1st plan part 231 determines allocation of the amount of purified water in each water treatment plant so that the amount of power consumption required for water distribution can be minimized while satisfying the predicted daily water demand. . At this time, the 1st plan part 231 determines the water purification plan with which power consumption becomes the minimum within the limits of distribution network information and restrictions (details are mentioned below).

  FIG. 10 is a flowchart showing a process (step S3) for determining a pump operation plan for a certain day. In this process, the 2nd plan part 232 acquires the predicted value of the water demand amount in each demand point for every 15 minutes (step S31). This process is different from the process of step S21 (the predicted value is represented by the first time scale) in that the predicted value of the water demand represented by the second time scale is acquired.

  Next, the 2nd plan part 232 acquires the water purification amount (plan value) of each water purification plant which the water purification plan determined by the 1st plan part 231 shows (step S32). Moreover, the 2nd plan part 232 acquires the water distribution network information and restrictions conditions of an applicable day (step S33). In addition, if the distribution network information and the constraint condition change according to the time zone, the second planning unit 232 acquires the distribution network information and the constraint condition of the corresponding time zone.

  If these information is acquired, the 2nd plan part 232 will operate the pump of a 15-minute unit (namely, 2nd time scale) using the information acquired in step S31-S33, and a 2nd cost model. A plan is determined (step S34). Specifically, the second planning unit 232 satisfies the predicted water demand for every 15 minutes, and purifies the water in each time slot (15 minutes) so that the power consumption required for water distribution is minimized. Determine the amount of water distribution at the site or water station (details will be described later). In addition, the 2nd plan part 232 may determine the operation plan for 1 day collectively, and may determine the operation plan of a 15-minute unit each time.

  After the water purification plan and the pump operation plan are thus determined, the plan setting unit 240 sets the water purification plan and the pump operation plan in the corresponding water supply facility (or equipment) in the water distribution network (step S4). . When the plan setting unit 240 sets a plan for all the water supply facilities, the operation shown in FIG. 4 ends.

  FIG. 11 is a diagram illustrating an example of a water purification plan determination process. Here, as shown in FIG. 11, the predicted values of the daily water demand at each of the demand points 41, 42, 43, 44 are “60”, “140”, “80”, “120”. To do. In this case, the predicted value of the daily water demand in the entire distribution network is “400”. The 1st plan part 231 gives priority to the water purification in a water purification plant with few power consumptions, when the power consumption required for a fixed amount of water distribution differs between several water purification plants. Moreover, when the purified water in this water treatment plant receives the restriction | limiting by distribution network information or restrictions, the 1st plan part 231 allocates the amount of purified water to the other water purification plant which does not receive this restriction | limiting.

  Here, a demand point has the demand point distributed from only a specific water purification plant, and the demand point which can be distributed from several water purification plants. For example, while the demand point 41 is distributed only from the water purification plant 11, the demand point 42 can be distributed from either the water purification plant 11 or the water purification plant 12. By referring to the water distribution network information, the first planning unit 231 satisfies the required water demand for such a demand point and minimizes the amount of power consumption in the water purification plants 11 and 12. The amount of purified water can be determined. For example, the first planning unit 231 allocates the amount of purified water that minimizes power consumption based on the first cost model for the pump stations P2, P3, P4, and P5 used to distribute water to the demand points 42 and 43. To decide. On the other hand, the water purification plant that can distribute water to the demand point 41 is only the water purification plant 11, and the water purification plant that can distribute water to the demand point 44 is only the water purification plant 12. As a result, the 1st plan part 231 determines allocation so that the amount of purified water in the water purification plant 11 may be "250" and the amount of purified water in the water purification plant 12 may be "150", for example.

  FIG. 12 is a diagram illustrating an example of a process for determining a pump operation plan. In the upper part of FIG. 12, the graph shown by the broken line schematically shows the transition (time change) of the water demand at each demand point. In the lower part of FIG. 12, the graph indicated by a broken line schematically shows the transition of the water distribution amount at each pump station.

  The 2nd plan part 232 will determine the operation plan of pumping stations P1-P6 with reference to a water purification plan or the 2nd cost model, if the predicted value for every 15 minutes of water demand in demand points 41-44 is acquired. . The second planning unit 232 does not exceed the respective water purification amounts planned for the water purification plants 11 and 12 on a daily basis, and satisfies the water demand at the demand points 41 to 44 on a 15 minute basis, The amount of water distribution for each time zone in the pump stations P1 to P6 is determined so that the overall power consumption is minimized. Similar to the first planning unit 231, the second planning unit 232 determines an operation plan that minimizes the power consumption within the limits of the distribution network information and the constraint conditions.

  As described above, according to the water distribution control system 200 of the present embodiment, it is possible to determine the water purification plan based on the first time scale and the pump operation plan based on the second time scale, and control the water supply facility. . Thereby, the water distribution control system 200 can appropriately evaluate the power consumption in the water supply facility.

  For example, the amount of purified water is planned on a relatively large time scale. However, when viewed on a smaller time scale, water demand is constantly changing and not constant. In addition, water demand at each demand point varies. Therefore, when determining a plan with a large time scale, such as a water purification plan, rather than applying the second cost model that specifies the operation pattern of each pump station, the tendency of power consumption in each pump station is shown. It can be said that it is more appropriate to apply the first cost model shown. In addition, when the first cost model (indicating a tendency of power consumption in units of pump stations) is applied when determining a plan with a small time scale such as a pump operation plan, the calculated power consumption amount This increases the error and makes it impossible to accurately predict the power consumption.

  On the other hand, when a plurality of cost models corresponding to the time scale is used as in the water distribution control system 200, for example, it is possible to appropriately determine each plan having a different time scale compared to a case where a single cost model is used. Become. As a result, the water distribution control system 200 can accurately determine a water distribution plan that reduces the amount of power consumption, and can contribute to a reduction in power consumption required for water distribution. In addition, according to the water distribution control system 200, since a plurality of cost models can be determined from a single simulation result, it is possible to reduce the amount of calculation compared to the case where simulation is performed for each cost model. It is.

[Modification]
The embodiment of the present invention is not limited to the above-described embodiment. Embodiments of the present invention may include, for example, modifications described below. Further, the embodiment of the present invention may be a combination of the embodiments and modifications described in this specification as appropriate. For example, the modifications described using a specific embodiment can be applied to other embodiments.

(Modification 1)
FIG. 13 is a block diagram illustrating a modification of the water distribution planning unit 230 of the second embodiment. The water distribution planning unit 230a shown in the figure is different from the water distribution planning unit 230 (see FIG. 2) of the second embodiment in that it includes the third planning unit 233, and has the same configuration as the water distribution planning unit 230 in other points. Have. The water distribution control system 200 may include a water distribution planning unit 230a instead of the water distribution planning unit 230.

  The 3rd plan part 233 determines the water storage plan regarding the water storage equipment contained in the water supply stations 21 and 22. For example, the 3rd plan part 233 is based on the measured value of the stored water amount in a water storage facility, and the threshold value (upper limit value and lower limit value) of the stored water amount in the said facility, in other words, to the water storage facility. Determine inflow and outflow from water storage facilities. For example, the third planning unit 233 determines the inflow amount and the outflow amount so that the stored water amount after the inflow and outflow falls within the above-described threshold range. In this case, the water storage amount indicated by the water storage plan is used as a constraint when determining a water purification plan or a pump operation plan (see FIGS. 9 and 10).

  The amount of water demand at the demand point varies from moment to moment. The pump operation plan is also determined on a relatively small time scale. Therefore, the 3rd plan part 233 determines a water storage plan using the 2nd cost model.

(Modification 2)
The 1st plan part 231 may determine a water purification plan in consideration of power consumption by other power consumption elements in addition to power consumption of a pump. For example, power consumption at a water purification plant includes power consumption by other equipment such as purification equipment, although power consumption by a pump is dominant. Accordingly, the first planning unit 231 calculates the power consumption by such other equipment in addition to the power consumption by the pump for each water purification plant, and then reduces the power consumption required for water distribution to the minimum. You may decide the allocation of the amount of purified water in a water treatment plant.

(Modification 3)
The present invention is typically applied to waterworks, but can also be applied to other waterworks. For example, the present invention may be applied to industrial waterworks. In addition, the water supply facility referred to in the present invention may vary depending on the type of distribution network.

(Modification 4)
The specific hardware configuration of the water distribution planning system 100 and the water distribution control system 200 is not limited to a specific configuration. For example, each of the water distribution planning system 100 and the water distribution control system 200 may be configured by a single device or a combination of a plurality of devices. The plurality of devices referred to here may be connected by wire or wireless, or may be connected via a network.

  For example, the water distribution control system 200 illustrated in FIG. 2 includes a first device including an input unit 210, a second device including a model determining unit 220 and a water distribution planning unit 230, and a third device including a plan setting unit 230. And the apparatus. In this case, the second device constitutes the water distribution planning system according to the present invention.

  FIG. 14 is a block diagram illustrating a hardware configuration of a computer device 300 that realizes the water distribution planning system 100 or the water distribution control system 200. The computer device 300 includes a CPU (Central Processing Unit) 301, a ROM (Read Only Memory) 302, a RAM (Random Access Memory) 303, a storage device 304, a drive device 305, a communication interface 306, and an input / output interface. 307.

  The CPU 301 executes a program 308 using the RAM 303. The program 308 may be stored in the ROM 302. The program 308 may be recorded on the recording medium 309 and read by the drive device 305, or may be transmitted from the external device via the network 310. The communication interface 306 exchanges data with an external device via the network 310. The input / output interface 307 exchanges data with peripheral devices (keyboard, mouse, display device, etc.). The communication interface 306 and the input / output interface 307 can function as means for acquiring or outputting data.

  Note that some or all of the components of the water distribution planning system 100 or the water distribution control system 200 can be realized by a general-purpose or dedicated electric circuit configuration. Here, the electric circuit configuration is a term that conceptually includes a single device, a plurality of devices, or a chipset. Furthermore, some or all of the components of the water distribution planning system 100 or the water distribution control system 200 may be realized by a combination of the above-described electric circuit configuration and program.

  In addition, cloud computing and SaaS (Software as a Service) can be included in the usage form of the present invention. For example, when the water distribution planning system 100 or the water distribution control system 200 is configured by a plurality of devices, some functions of the plurality of devices may be provided to the user (water service provider) as a service via the network. . Specifically, the water distribution control system 200 includes a server device and a client device used by a user, and provides a service that allows the user to receive plan information by transmitting necessary information to the server device. It may be.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2015-209602 for which it applied on October 26, 2015, and takes in those the indications of all here.

DESCRIPTION OF SYMBOLS 100 Water distribution planning system 110 Determination part 120 Planning part 200 Water distribution control system 210 Input part 220 Model determination part 230, 230a Water distribution planning part 231 1st plan part 232 2nd plan part 233 3rd plan part 240 Plan setting part

Claims (7)

For water facilities, based on information indicating the relationship between the water distribution amount and the power consumption of water distribution means constituting the water facilities, at a given time scale, it shows the relationship between the water distribution amount and power consumption amount of the water facilities A determination means for determining a cost model ;
For each of the one or more water supply facilities, the amount of water distribution from the water supply facility in the first time scale based on a first cost model determined for the water supply facility and corresponding to the first time scale. A first planning means for calculating a first plan value for determining the first distribution so that the water distribution amount and the power consumption in the water supply facility satisfy a first predetermined condition in a first time scale;
A second cost model corresponding to a second time scale determined for the water supply facility for each of the plurality of water supply facilities that distribute water from the one or more water supply facilities; and the first planned value Based on the above, the second planned value that determines the amount of water distribution from the water facility in the second time scale is the second amount of water distribution and the power consumption in the water facility in the second time scale. Second planning means for calculating so as to satisfy the predetermined condition of:
Water distribution planning system with. The second time scale is smaller than the first time scale;
The second cost model shows the relationship between the water distribution amount of the water supply facility and the power consumption amount more precisely than the first cost model.
The water distribution planning system according to claim 1.   Each of the one or more water supply facilities is a water purification plant;
  The first planning means calculates the first planned value using the amount of water purified at the water purification plant as the water distribution amount,
  The second plan means calculates a plan value related to operation control of the water distribution means as the second plan value.
  The water distribution planning system according to claim 1 or claim 2. At least one of the plurality of water supply facilities is a facility including a water storage facility,
The second planning means, the water amount in the water storage facility one of the constraints that falls within a predetermined range, any one of claims 1 to calculate the second planned to claim 3 The water distribution planning system according to item 1 . Said determining means, the power consumption required for water distribution at a predetermined pressure, the calculated by combining each simulation water distribution means, the first cost model and the second cost model based on the calculation result The water distribution planning system according to any one of claims 1 to 4. Information processing device
For water facilities, based on information indicating the relationship between the water distribution amount and the power consumption of water distribution means constituting the water facilities, at a given time scale, it shows the relationship between the water distribution amount and power consumption amount of the water facilities Determine the cost model ,
For each of the one or more water supply facilities, the amount of water distribution from the water supply facility in the first time scale based on a first cost model determined for the water supply facility and corresponding to the first time scale. Calculating the first planned value that determines the first water flow rate and the power consumption in the water supply facility in the first time scale so that the first predetermined condition is satisfied,
A second cost model corresponding to a second time scale determined for the water supply facility for each of the plurality of water supply facilities that distribute water from the one or more water supply facilities; and the first planned value Based on the above, the second planned value that determines the amount of water distribution from the water facility in the second time scale is the second amount of water distribution and the power consumption in the water facility in the second time scale. To satisfy the predetermined condition of
Water distribution planning method. On the computer,
For water facilities, based on information indicating the relationship between the water distribution amount and the power consumption of water distribution means constituting the water facilities, at a given time scale, it shows the relationship between the water distribution amount and power consumption amount of the water facilities The process of determining the cost model ;
For each of the one or more water supply facilities, the amount of water distribution from the water supply facility in the first time scale based on a first cost model determined for the water supply facility and corresponding to the first time scale. A process for calculating a first planned value that determines the first predetermined time scale so that the water distribution amount and the power consumption in the water supply facility satisfy the first predetermined condition in the first time scale;
A second cost model corresponding to a second time scale determined for the water supply facility for each of the plurality of water supply facilities that distribute water from the one or more water supply facilities; and the first planned value Based on the above, the second planned value that determines the amount of water distribution from the water facility in the second time scale is the second amount of water distribution and the power consumption in the water facility in the second time scale. Processing to satisfy the predetermined condition of
A program for running

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