JP5701919B2 - Reservoir water level setting device, distribution reservoir water level setting method and distribution reservoir water level setting system - Google Patents

Description

  The embodiment of the present invention is used in a process of supplying purified water to a distribution reservoir or a receiving reservoir (hereinafter collectively referred to as a distribution reservoir) with a water supply pump in order to distribute purified water that has been purified at a water purification plant to consumers. The present invention relates to a distribution reservoir water level setting device, a distribution reservoir water level setting method and a distribution reservoir water level setting system used in this device.

  Water demand varies from moment to moment depending on human life patterns. Distribution reservoirs are mainly responsible for suppressing fluctuations in the amount of water delivered, performing stable water treatment at the water treatment plant, and securing a certain amount of purified water so that water can be supplied in an emergency. Role. The water treatment plant operator constantly monitors the water level in the reservoir, and starts and stops the pump that supplies water to the reservoir and controls the flow rate to maintain the water level within the predetermined upper and lower limits of the operational water level. , To play the above role.

  On the other hand, in general, pump power for pumping clean water to the reservoir is not considered. Therefore, if the water level of the reservoir is maintained within the upper and lower limits of the water level, excessive pump power may be temporarily generated in the morning and evening hours when the water demand peaks. As a result, the power peak consumed in the water purification plant increases, and high contract power may occur.

  In addition, a method for obtaining a solution by formulating a pump water supply plan as an optimization problem has been proposed, but there is a problem that a lot of man-hours are required for system construction and parameter adjustment.

Japanese Patent No. 4914111 JP2012-160170A

  As mentioned above, when the operator tries to maintain the water level of the reservoir in the upper and lower limits of the water level, excessive pump power may be temporarily generated, and the power peak consumed in the water purification plant becomes high, High contract power may be generated.

  Therefore, the purpose is to set the upper and lower limits of the reservoir that can suppress the generation of excessive pump power and prevent the increase in contract power when the operator maintains the water level of the reservoir within the upper and lower limits of the reservoir. The object is to provide a reservoir level setting device, a reservoir level setting method and a reservoir level setting system used in this device.

  According to the embodiment, the distribution reservoir water level setting device includes a recording unit, a simulation unit, a power peak evaluation unit, and a power amount charge calculation unit. The recording unit records in advance plant data including information on a plurality of pumps and distribution reservoirs installed in the plant and past water demand data. The simulation unit calculates the amount of water delivered to the reservoir by the plurality of pumps using the plant data, calculates the water level of the reservoir based on the relationship between the amount of water delivered and the water demand data, When the water level is close to the upper and lower limits of the reservoir, the number of pumps for calculating the water supply amount is increased or decreased. The power peak evaluation unit calculates a power amount per predetermined time based on the water supply amount and a peak power that takes a maximum value among the power amount. The power amount charge calculation unit calculates a power amount charge based on the power amount and the peak power, and causes the display device to display a calculation result of the power amount charge. The simulation unit outputs, as a set value, the upper and lower limits of the reservoir that can suppress the electric energy charge.

It is a figure which shows the water supply process to which the distribution reservoir water level setting apparatus which concerns on 1st Embodiment is applied. It is a figure which shows the function structure of the distribution reservoir water level setting apparatus which concerns on 1st Embodiment. It is a figure which shows the reservoir upper and lower limit value input into the simulation part shown in FIG. It is a figure which shows the flowchart at the time of the reservoir level setting apparatus shown in FIG. 2 setting a reservoir level operation rule. It is a block diagram which shows the other structure of the distribution reservoir water level setting apparatus shown in FIG. It is a block diagram which shows the other structure of the distribution reservoir water level setting apparatus shown in FIG. It is a figure which shows the table | surface obtained by the process implemented in the simulation part shown in FIG. It is a figure which shows the reservoir upper and lower limit value input into the simulation part shown in FIG. It is a figure which shows the table | surface obtained based on the reservoir upper and lower limit value shown in FIG. It is a block diagram which shows the function structure of the reservoir water level setting apparatus which concerns on 2nd Embodiment. It is a block diagram which shows the function structure of the distribution reservoir water level setting apparatus which concerns on 3rd Embodiment. It is a figure which shows a system diagram in case the function of the water reservoir level setting apparatus shown in FIG. 2 is contained in a cloud server.

  Hereinafter, embodiments will be described with reference to the drawings.

(First embodiment)
1st Embodiment demonstrates the case where an operator sets the upper and lower limit range of the reservoir water level which should be monitored every day.

FIG. 1 is a diagram schematically illustrating a water supply process to which a reservoir water level setting device 10 according to the first embodiment is applied. In the water supply process shown in FIG. 1, purified water is supplied from a water purification plant (not shown) to a distribution reservoir 20 by a pump 30. In the water supply process, the number of water pumps operated y _k [units] and the amount Q of water supply Q are maintained so as to keep the reservoir water level l _k [m] within a predetermined range while satisfying the water demand q _k [m ³ / h]. _The operator operates _k [m ³ / h]. In addition, the operator may perform an operation of maintaining the water level of the distribution reservoir high by the morning of 6:00, for example, when the water demand increases rapidly. In this embodiment, the upper and lower limit values of the reservoir that allow the fluctuation of the reservoir level l _k are referred to as a reservoir level operation rule. Note that k indicates time, and k = 1, 2,..., 24 (hour unit).

FIG. 2 is a diagram illustrating a functional configuration of the reservoir water level setting device 10 according to the first embodiment. Reservoir water level setting device 10 shown in FIG. 2 includes, for example, a CPU (Central Processing Unit), and a program or data for CPU to execute processing such as ROM (Read Only Memory) and RAM (Random Access Memory). Includes storage area. The reservoir level setting device 10 constructs the simulation unit 11, the power peak evaluation unit 12, and the power rate calculation unit 13 by causing the CPU to execute an application program. In addition, the reservoir level setting device 10 includes a recording unit 14 and an input unit 16. The recording unit 14 stores in advance a plant database 141 that records characteristics of the water supply plant in advance as plant data, and past water demand data. The water demand database 142 to be recorded is recorded. Here, the plant data recorded in the plant database 141 are, for example, the pipe resistance r [−], the elevation H [m] from the water pump 30 to the reservoir 20, the reservoir area S [m ² ], and The characteristics (coefficients a, b, c) of the water pump 30 and the like. The past water demand data recorded in the water demand database 142 is, for example, water demand data for each season, Monday to Friday water demand data, Saturday water demand data, Sunday water demand data, and holiday water. Demand data.

The simulation unit 11 calculates the reservoir water level l _k at time _k by the following equation.

The simulation unit 11 reads the reservoir area S from the plant database 141, reads water demand data for a certain past period (for example, one year) from the water demand database 142, and acquires the water demand q _k . Simulation unit 11, the water supply amount _{Q k,}

Ask from. The simulation unit 11 reads out the pipe resistance r, the altitude H, and the pump characteristic coefficients a, b, and c from the plant database 141. Here, the number y _k is calculated by a simulation calculation by the simulation unit 11. That is, when the reservoir level l _k calculated by the equation (1) reaches a predetermined value with respect to the upper limit value l _kmmax set by the operator of the reservoir level setting device 10, the simulation unit 11. Reduce the number of operating pumps 30 by one. Further, the simulation unit 11 determines that the reservoir water level l _k calculated by the equation (1) reaches a predetermined value with respect to the reservoir lower limit l _kmin set by the operator of the reservoir water level setting device 10. Increase the number of operating pumps 30 by one. For example, as shown in FIG. 3, the simulation unit 11 reduces the pump 30 by one when the reservoir water level l _k is near the upper limit l _{kmax at} time 13. Thereafter, the simulation unit 11 increases one pump when the reservoir water level l _k is near the lower limit l _{kmin at} time 2. Thereafter, the simulation unit 11, at time 6, in order to maintain a high distribution reservoir water level l _k, further the pump 30 is activated one.

The simulation unit 11 outputs the water supply amount Q _k of k = 1,..., 24 to the power peak evaluation unit 12 as a pump operation plan.

The power peak evaluation unit 12 evaluates the power peak based on the pump operation plan obtained from the simulation unit 11. That is, the power peak evaluation unit 12 calculates the power amount P _k at k = 1,.

Here, K = 24, and each function is as follows.

D, e, and f are parameters representing pump efficiency characteristics. The power peak evaluation unit 12 reads parameters d, e, and f from the plant database 141. The power peak evaluation unit 12 acquires max (P _k ) that is the maximum P _k among the calculated power amounts P _{1 to} P ₂₄ . The power peak evaluation unit 12 outputs the power amount P _k and the peak power max (P _k ) to the power rate calculation unit 13.

The power rate calculation unit 13 calculates the power rate for a certain period T (days) based on the power amount P _k and the peak power max (P _k ) obtained from the power peak evaluation unit 12 and the power rate system given from the outside. calculate. Here, the electricity rate is

The basic charge and electricity charge are

It is. As shown by the equation (7), the basic charge depends on the peak power. Note that y is the basic unit price [yen / kwh / month] based on the contract power, and x is the unit price [yen / kwh] of the electric energy charge.

  The power charge calculation unit 13 causes the display device 40 to display the calculated power charge.

Here, the unit price of the electric energy charge is described as an example in which the unit price is constant without depending on the time k, but is not limited thereto. For example, the unit price of the electric energy charge may be defined from the outside as x _k depending on the time k in consideration of the late-night electric energy charge.

The operator of the water supply process confirms the power rate displayed on the display device 40. Operator is different distribution Ikegami lower limit _{l kmax,} if you want to check the power rate for _{l kmin,} distribution Ikegami lower limit _{l kmax,} enter the _{l kmin} to the newly simulation unit 11. The operator was newly input distribution Ikegami lower limit _{l kmax,} relative _{l kmin,} confirms power rate calculated by the distribution reservoir water level setting device 10. The operator may, distribution Ikegami lower limit power rate is suppressed to small amount value _{l kmax,} selects _{l kmin.} Distributing reservoir water level setting device 10 has been selected in the operator distribution Ikegami lower limit _{l kmax,} it sets the _{l kmin} as distribution reservoir water level operating rules.

  Next, the operation when a reservoir water level operation rule is set by the reservoir level setting device 10 configured as described above will be described. FIG. 4 is a diagram illustrating a flowchart when the distribution reservoir water level setting device 10 sets distribution reservoir water level operation rules.

First, the simulation unit 11, distribution Ikegami lower limit _l kmax input from the _operator, receiving a _{l kmin} (step S41). Simulation unit 11 calculates the assumption that performs starting and stopping of the pump while monitoring the lower limit range over the operating personnel distributing reservoir water level, water distribution Ikegami lower limit l _kmax, with reference to the l _kmin the water supply amount Q _k To do. The simulation unit 11 outputs the pump operation plan to the power peak evaluation unit 12 (step S42).

The power peak evaluation unit 12 calculates the power amount P _k and the peak power max (P _k ) based on the pump operation plan (step S43).

The power charge calculation unit 13 calculates a power charge for a predetermined period based on the calculated power amount P _k and the peak power max (P _k ) (step S44), and causes the display device 40 to display the power charge.

  The operator confirms the power rate displayed on the display device 40.

Subsequently, the simulation unit 11, a new distribution Ikegami lower limit _l kmax by _operators, it is determined whether there is an input _{l kmin} (step S45). When there is an input (Yes in step S45), the simulation unit 11 performs the process of step S42 again.

When there is no input (No of step S45), the simulation part 11 judges whether the setting instruction | indication was input from the operator (step S46). When entered (Yes in step S46), the simulation unit 11, distribution Ikegami lower limit _l kmax with setting _instruction, it sets a _{l kmin} as distribution reservoir water level operation rules (step S47). When there is no input (No in step S46), the simulation unit 11 performs the process of step S45 again.

As described above, in the first embodiment, the simulation unit 11 calculates the water supply amount Q _k by simulation based on the input upper and lower limit values l _kmax and l _kmin . Then, the power peak evaluation unit 12 calculates the power amount and the peak power, and the power rate calculation unit 13 calculates the power rate. The operator selects the upper and lower limits of the reservoir that can most curb the electricity rate.

  The operator adopts the reservoir water level operation rule set in this way, and operates the water pump 30 by monitoring whether the reservoir water level does not deviate from the upper and lower limits of the reservoir as in normal operation. As a result, the operator can suppress the power peak without paying special attention. The basic fee is set by a contract with an electric power company based on peak power in time units, as shown by the equation (7). Since the operator can suppress the power peak, the contracted power with the power company can be reduced, and in addition, the annual power charge can be reduced.

  Therefore, according to the reservoir water level setting device 10 according to the first embodiment, the operator maintains the water level of the reservoir in the upper and lower limits of the water level, thereby suppressing the generation of excessive pump power and increasing contract power. It is possible to set the reservoir water level that can prevent Thereby, it becomes possible to suppress the required electric power in a water transmission plant, and it can also contribute to local electric power system stabilization.

  The reservoir level setting device 10 according to the present embodiment may be connected to the printing device 50 as shown in FIG. When the operator sets the distribution reservoir water level operation rule, the simulation unit 11 causes the printing device 50 to print the distribution reservoir water level operation rule. For example, in FIG. 5, the printing device 50 prints “Operation of XX month XX day, water level XX m to XX m”. This makes it possible for all operators to share the value of the reservoir water level that the operator should monitor in the future.

  Moreover, you may make it provide the correction | amendment part 15 as shown in FIG. There may be an error between the water demand data recorded in the water demand database 142 and the water demand in the assumed period. Here, the error includes an error due to population transition, an error due to increase / decrease of water distribution areas, an error due to temperature fluctuation, and the like.

  The correction unit 15 receives an error (O%) of the water demand assumed from the operator. The correction | amendment part 15, if the error ((circle)%) of water demand is received, reads the plant data recorded on the plant database 141, and calculates the error of a water level. The correction unit 15 outputs the calculated water level error to the simulation unit 11.

The simulation unit 11 performs a simulation including the error of the water level calculated by the correction unit 15. Operator, based on the electricity rate simulated by such processing, the optimal water distribution Ikegami lower limit l _kmax, selects l _kmin. Operator is thus selected distribution Ikegami lower limit l _kmax, by operating the water pump 30 as a distribution reservoir water level in the range of l _kmin fits, also the error of water demand is a case where the maximum Thus, it becomes possible to reduce the power peak and to reduce the power charge.

Further, the distributing reservoir water level setting device 10 according to the present embodiment, the simulation unit 11, distribution Ikegami lower limit l _kmax input as a fixed _value, it has been described as an example the case of performing the simulation based on l _kmin. However, it is not limited to this. For example, the simulation unit 11, distribution Ikegami lower limit _l kmax is set in _hours, it may be executed a simulation based on _{l kmin.} Depending on the relationship between the water demand and the amount of stored water, for example, it is necessary to maintain the reservoir level high in preparation for the morning water demand peak. When the upper and lower limits of the distributing reservoir are constant values, for example, as shown in FIG. 7, there is a possibility that a time zone in which three water pumps 30 are activated is inevitably generated. If the state in which three water pumps 30 are activated is maintained, the power peak becomes high, which causes an increase in power charges. Therefore, for example, as shown in FIG. 8, the operator inputs a high value for the lower limit of the reservoir at night when water demand is low. Simulation unit 11 is thus entered distribution Ikegami lower limit _{l kmax,} executes simulation based on _{l kmin.} Figure 9 is a distribution Ikegami lower limit _l kmax shown in FIG. 8 _shows a simulation result based on _{l kmin.} According to FIG. 9, by dynamically changing the reservoir lower limit value at night, it becomes possible to prepare for the morning water demand peak while maintaining the reservoir level at night as high as possible. Operator is distribution Ikegami lower limit l _kmax, repeatedly enter the l _kmin by the hour, selecting a distribution Ikegami lower limit capable of most suppress power rates. By adopting the reservoir water level operation rule set from the selected upper limit value of the reservoir, the operator can set the number of driven water pumps 30 to two. It is possible to suppress the peak and avoid an increase in power charges.

Further, the distributing reservoir water level setting device 10 according to the present embodiment, the simulation unit 11, distribution Ikegami lower limit l _{kmax input,} it has been described as an example a case of executing a simulation based on l _kmin. However, it is not limited to this. For example, the simulation unit 11 may adopt an operator's own reservoir water level operation rule. For example, the following if-then rules may be adopted as the distribution reservoir water level operation rules. This rule is an operation rule in which the number of operating pumps is increased in advance to prepare for a water demand peak at around 8:00 in the morning as shown in FIG.

If Time t = 4:00 && Reservoir level <4.0m
Then Pump operation number = Pump operation number +1
By adopting such a reservoir level operation rule, the simulation unit 11 can output a simulation result indicating that the reservoir level is maintained high at about 6:00 in the morning when the water demand peak is reached. . Operator is distribution Ikegami lower limit l _kmax, repeatedly enter the l _kmin, selects a distribution Ikegami lower limit capable of most suppress power rates.

  In this way, in addition to the upper and lower limits of the reservoir, the operator's own judgment is also adopted as the reservoir water level operation rules, so that the operator can monitor the reservoir water level with a sense close to a skilled operator and use the water pump. 30 can be operated.

  In addition, when the printing device 50 is connected to the distribution reservoir water level setting device 10, in addition to the contents of “Operation of XX month XX day, water level XXm to XXm”, “4 o'clock If the water level in the reservoir is less than 4 m, please add one more pump. "

  Moreover, in 1st Embodiment, the simulation part 11 demonstrated as an example the case where characteristics, such as a season in a past water demand data and a day of the week, were not considered. However, the present invention is not limited to this. The simulation unit 11 may read water demand data for a specified period such as a season and a day of the week from the water demand database 142 and execute the simulation for each specified period. At this time, the upper and lower limits of the reservoir are input for each designated period. Thereby, the simulation part 11 becomes possible to simulate the fluctuation | variation of the water supply amount correctly at the time of switching from a weekday to a holiday, for example. In addition, the simulation part 11 memorize | stores the reservoir water level operation rule set for every predetermined | prescribed period, and when it becomes actually the period, it reads the corresponding reservoir water level operation rule, and prints it on the printing apparatus 50. You may make it let it.

  In Patent Document 1, with the operation upper and lower limit range of the reservoir as a constraint, the pump flow rate plan that minimizes the power cost based on the power unit of the pump and the power rate system that is an external factor, etc. Has been proposed. However, the invention according to Patent Document 1 does not calculate the upper and lower limits of the reservoir. Moreover, the invention which concerns on patent document 1 does not suppress an electric power peak, and does not reduce contract electric power.

  Further, Patent Document 2 proposes a method for controlling a plurality of pumps that achieve a desired reservoir level even with respect to factors such as changes in the set water level of the reservoir and fluctuations in water demand. However, Patent Document 2 is an invention related to pump water level control, and does not calculate the upper and lower limits of the reservoir.

(Second Embodiment)
In the second embodiment, a case will be described in which the reservoir level setting device 60 automatically determines the upper and lower limits of the reservoir.

  FIG. 10 is a block diagram illustrating a functional configuration of the reservoir water level setting device 60 according to the second embodiment. A distribution reservoir water level setting device 60 shown in FIG. 10 includes a simulation unit 61, a power peak evaluation unit 62, a power rate calculation unit 63, and a recording unit 14.

The simulation unit 61 is configured using an internal engine of the distribution reservoir water level setting device 60. Simulation unit 61, distribution Ikegami lower limit _l kmax input by the _operator, rather than based on _{l kmin,} automatically selected for water distribution Ikegami lower limit _{l kmax,} executes simulation based on _{l kmin.} The internal engine solves the optimization problem with the upper and lower limits of the reservoir level as the decision variable. The optimization problem can be formulated as follows, for example.

Here, R represents the allowable change number, and L represents the allowable water level deviation. The permissible water level deviation L is set so that the water levels in the reservoirs substantially coincide at the end and beginning of the day.

There are a plurality of methods for solving the optimization problem represented by Equation (9), and the method is not limited. For example, the solution using the full search algorithm is as follows.

Here, the peak power max (P _k ) is calculated by the power peak evaluation unit 62 and recorded in the memory of the simulation unit 61.

  The simulation unit 61 outputs the extracted peak power and power amount to the power rate calculation unit 63. In addition, the simulation unit 61 sets the upper and lower limits of the reservoir when the peak power is calculated as the reservoir water level operation rule.

  The power charge calculation unit 63 calculates a power charge for a certain period based on the power amount and peak power obtained from the simulation unit 61 and the power charge system given from the outside. The power charge calculation unit 63 causes the display device 40 to display the calculated power charge.

As described above, distributing reservoir water level setting device 60 according to the second embodiment, automatically distribution Ikegami lower limit _{l kmax,} set the _{l kmin,} the set distribution Ikegami lower limit _{l kmax,} based on _{l kmin} Run the simulation. The simulation unit 61 extracts the minimum peak power from the peak power calculated for each reservoir upper and lower limit value, and sets the reservoir upper and lower limit value for which the extracted peak power is calculated as the reservoir water level operation rule.

  The operator adopts the reservoir water level operation rule set in this way, and operates the water pump 30 by monitoring whether the reservoir water level does not deviate from the upper and lower limits of the reservoir as in normal operation. Thereby, the operator can suppress the power peak. By being able to suppress the power peak, the operator can reduce the contract power with the power company and, in addition, can reduce the annual power rate.

  Therefore, according to the reservoir level setting device 60 according to the present embodiment, the operator maintains the water level of the reservoir in the upper and lower limits of the water level, thereby suppressing the generation of excessive pump power and preventing an increase in contract power. It is possible to set a reservoir level that can be used. Moreover, the improvement point regarding the reservoir level operation which the operator has not noticed can be automatically presented.

  In addition, when the simulation part 61 receives the execution instruction | indication of simulation during operation of a water transmission plant, you may make it perform the simulation for acquiring the optimal upper and lower limit value of a distribution reservoir in the present. If the result of reducing the electricity charge is obtained by changing the current upper and lower limit value of the reservoir, the simulation unit 61 causes the display device 40 to display the upper and lower limit value of the reservoir at that time.

(Third embodiment)
In the third embodiment, a case will be described in which the reservoir level setting device 70 avoids an operation exceeding the current contract power as much as possible.

  FIG. 11 is a block diagram showing a functional configuration of a reservoir water level setting device 70 according to the third embodiment. A distribution reservoir water level setting device 70 shown in FIG. 11 includes a simulation unit 11, a power peak evaluation unit 12, a power rate calculation unit 13, a recording unit 14, an input unit 16, and an operable time calculation unit 71.

  The driveable time calculation unit 71 receives the power usage measured by the power monitoring device 80. Here, the electric energy monitoring device 80 is installed in the field, and measures electric power used by a transmission pump or the like provided in the field.

  The operable time calculation unit 71 calculates the time until the value of the contract power is exceeded when the current state is continued based on the current value of the contract power. For example, when the water supply amount is insufficient with respect to the water demand and the water pump 30 needs to be operated to the maximum extent, the operable time calculation unit 71 measures the start-up time of the water pump 30, and in the past year The remaining time until exceeding the maximum power amount is calculated in minutes. The drivable time calculation unit 71 causes the display device 40 to display the calculated remaining time. At this time, the display device 40 may emphasize the remaining time and present it to the operator.

  As described above, in the third embodiment, the operable time calculation unit 71 calculates the remaining time until the maximum power consumption is exceeded based on the current power consumption and presents it to the operator. . As a result, it is possible to alert the operator so that the amount of power used does not exceed the peak power, so that an increase in contract power can be suppressed.

  Therefore, according to the reservoir level setting device 70 according to the third embodiment, an increase in power peak due to unnecessary pump power can be suppressed, and an increase in contract power can be prevented.

  In the third embodiment, the case where the remaining time is calculated has been described as an example, but the present invention is not limited to this. When the current pump operation state is continued for a predetermined period, the operable time calculation unit 71 may acquire whether or not the maximum electric energy for the past one year is exceeded. The drivable time calculation unit 71 causes the display device 40 to display the acquired result.

  Moreover, if the operation possible time calculation part 71 adds the electric energy which additionally starts a water pump to the present electric power consumption, there exists a possibility that it may exceed a peak electric power, and there exists a possibility that a reservoir water level may fall below a reservoir lower limit. In this case, it may be acquired whether or not the maximum amount of power for the past year is exceeded due to an increase in the amount of power required for additional activation. The drivable time calculation unit 71 causes the display device 40 to display the acquired result.

(Other embodiments)
In each said embodiment, although the case where the distribution reservoir number setting apparatus was provided in the plant was demonstrated to the example, it is not necessarily limited to this. For example, the cloud server may have the function of the distribution reservoir water level setting device. As an example, FIG. 12 shows a system diagram when the function of the reservoir level setting device 10 shown in FIG. 2 is included in the cloud server 90.

  The cloud server 90 illustrated in FIG. 12 is connected to the plant via a network. The cloud server 90 includes a simulation unit 11, a power peak evaluation unit 12, and a power charge calculation unit 13. The recording unit 14 is provided in the plant.

  The cloud server 90 outputs the power rate calculated by the power rate calculation unit 13 and the distribution reservoir water level operation rule set by the simulation unit 11 to the plant via the network.

  As described above, the function of the water reservoir level setting device 10 is included in the cloud server 90, so that the operator maintains the water level of the water reservoir in the upper and lower limit water level, thereby suppressing the generation of excessive pump power. The reservoir water level that can prevent the increase in contract power is set in the cloud server 90. Thereby, since it is not necessary to provide a reservoir level setting device in the water transmission plant, it is possible to suppress the necessary power in the water transmission plant.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Reservoir level setting apparatus, 11 ... Simulation part, 12 ... Electric power peak evaluation part, 13 ... Electricity charge calculation part, 14 ... Recording part, 141 ... Plant database, 142 ... Water demand database, 15 ... Correction part, 16 ... Input unit, 20 ... reservoir, 30 ... water pump, 40 ... display device, 50 ... printing device, 60 ... reservoir water level setting device, 61 ... simulation unit, 62 ... power peak evaluation unit, 63 ... power charge calculation unit, 70 ... Reservoir water level setting device, 71 ... Operable time calculation unit, 80 ... Electric energy monitoring device, 90 ... Cloud server

Claims (12)

A recording unit for pre-recording plant data including information about a plurality of pumps and distribution reservoirs installed in the plant, and past water demand data;
An input unit that accepts input of upper and lower limits of the reservoir,
Wherein calculating a water supply amount of plant data using to the distributing reservoir of said plurality of pumps, calculating the water level of the distributing reservoir based on the relationship between the water content and the water demand data, the water level is the water distribution A simulation unit that increases or decreases the number of pumps when calculating the water supply amount when near the pond upper lower limit,
A power peak evaluation unit for calculating a power amount per predetermined time based on the water supply amount and a peak power taking a maximum value among the power amount;
A power amount charge is calculated based on the power amount and the peak power, and a power amount charge calculation unit that displays a calculation result of the power amount charge on a display device;
The simulation unit calculates the water supply amount for each of the input reservoir upper and lower limit values,
The power peak evaluation unit calculates the power amount and the peak power for each of the input reservoir upper and lower limit values,
The electric energy charge calculation unit can calculate an electric energy charge for each input upper and lower limit value of the reservoir, and can set an upper and lower limit value of the reservoir that can suppress the electric energy charge based on the calculation result of the electric energy charge. A reservoir level setting device for displaying on the display device.   A recording unit for pre-recording plant data including information about a plurality of pumps and distribution reservoirs installed in the plant, and past water demand data;
  A simulation unit,
    Set the upper and lower limits of the distribution reservoir by changing the preset conditions,
    Using the plant data to calculate the amount of water delivered to the reservoirs of the plurality of pumps,
    Calculate the water level of the reservoir based on the relationship between the water volume and the water demand data,
    When the water level of the reservoir is near the upper and lower limits of the set reservoir, increase or decrease the number of pumps when calculating the water supply amount,
    Based on the water supply amount, for each of the upper and lower limits of the reservoir to be set, obtain the power amount per predetermined time and the peak power taking the maximum value among the power amount,
    Among the acquired peak power, a simulation unit that extracts the minimum peak power;
  A power charge calculation unit that calculates a power charge based on the peak power extracted by the simulation unit and a power amount for the peak power, and causes the display device to display a calculation result of the power charge;
Comprising
  The simulation unit is a reservoir water level setting device that uses the upper and lower limits of the reservoir when the extracted peak power is acquired as a set value. The simulation unit, distributing reservoir water level setting device according to claim 1 or 2, wherein to print the distribution Ikegami lower limit is set to the printing device. When an error in water demand is input, the plant data is read out, and a correction unit for calculating a water level error based on the error in water demand and the plant data,
The water reservoir level setting device according to claim 1 or 2 , wherein the simulation unit calculates a water supply amount to the water reservoir including the water level error. The reservoir level setting device according to claim 1 or 2 , wherein the simulation unit calculates the amount of water supplied to the reservoir by changing the upper and lower limit values of the reservoir in time units. The reservoir level setting device according to claim 1 or 2 , wherein the simulation unit increases or decreases the number of pumps when calculating the water supply amount in accordance with an operation rule input from an operator in addition to the upper and lower limits of the reservoir. The recording unit records water demand data for each predetermined period including the season and day of the week,
The reservoir level setting device according to claim 1 or 2 , wherein the simulation unit calculates a water supply amount to the reservoir for each period using a reservoir upper and lower limit value set for each period. Based on said power usage that is measured by the amount of power monitoring device provided in the plant, further comprising the operable time calculation unit which calculates the time remaining until it exceeds the value of the contract power according to claim 1 or 2 distributing reservoir according Water level setting device. Accept upper and lower limits of the reservoir,
Using plant data including information about a plurality of pumps and reservoirs installed in the plant, calculating the amount of water delivered to the reservoirs of the plurality of pumps,
Calculate the water level of the reservoir based on the relationship between the amount of water delivered and past water demand data,
Pump speed to increase or decrease the when the water level of the calculating calculates the water quantity to be the vicinity of the water distribution Ikegami lower limit,
Based on the amount of water to be calculated, calculate the amount of power per predetermined time and the peak power taking the maximum value of this amount of power,
Calculate a power charge based on the power and the peak power,
Display a calculation result of the electric energy charge on a display device;
Accept new upper and lower limits of reservoirs,
Calculate the electricity charge for the newly received upper and lower limits of the reservoir,
Display the calculation result of the electric energy charge for the newly received upper and lower limits of the reservoir on the display device;
A water reservoir level setting method capable of setting a water reservoir upper and lower limit value capable of suppressing the electricity charge.   Set the upper and lower limits of the reservoir based on preset conditions,
  Using plant data including information about a plurality of pumps and reservoirs installed in the plant, calculating the amount of water delivered to the reservoirs of the plurality of pumps,
  Calculate the water level of the reservoir based on the relationship between the amount of water delivered and past water demand data,
  When the water level to be calculated is near the upper and lower limits of the reservoir, the number of pumps when calculating the water supply amount is increased or decreased,
  Based on the amount of water to be calculated, calculate the amount of power per predetermined time and the peak power taking the maximum value of this amount of power,
  Based on the above conditions, set a new upper and lower limit for the reservoir,
  Calculate the amount of power and the peak power for the set new reservoir upper and lower limits,
  Of the calculated peak power, extract the minimum peak power,
  A power charge is calculated based on the extracted peak power and the power amount for the peak power,
  Display a calculation result of the electric energy charge on a display device;
  A reservoir water level setting method using the upper and lower limits of the reservoir when the extracted peak power is acquired as a set value. A plurality of pumps, distribution reservoirs, plant data including information about the pumps and the distribution reservoirs, a recording unit that records in advance past water demand data, and an input unit that receives input of the upper and lower limits of the distribution reservoirs A plant having
A cloud server for monitoring the plant,
The cloud server
Wherein calculating a water supply amount of plant data using to the distributing reservoir of said plurality of pumps, calculating the water level of the distributing reservoir based on the relationship between the water content and the water demand data, the water level is the water distribution A simulation unit that increases or decreases the number of pumps when calculating the water supply amount when near the pond upper lower limit,
A power peak evaluation unit for calculating a power amount per predetermined time based on the water supply amount and a peak power taking a maximum value among the power amount;
An electric energy fee is calculated based on the electric energy and the peak electric power, and an electric energy fee calculator that outputs a calculation result of the electric energy fee to the plant ,
The simulation unit calculates the water supply amount for each of the input reservoir upper and lower limit values,
The power peak evaluation unit calculates the power amount and the peak power for each of the input reservoir upper and lower limit values,
The electric energy charge calculation unit can calculate an electric energy charge for each input upper and lower limit value of the reservoir, and can set an upper and lower limit value of the reservoir that can suppress the electric energy charge based on the calculation result of the electric energy charge. distributing reservoir water level setting system the output to the plant as.   A plant having a plurality of pumps, a distribution reservoir, plant data including information about the pump and the distribution reservoir, and a recording unit that records past water demand data;
  A cloud server for monitoring the plant;
Comprising
  The cloud server
    A simulation unit,
      Fluctuate the upper and lower limits of the reservoir under preset conditions,
      Using the plant data to calculate the amount of water delivered to the reservoirs of the plurality of pumps,
      Calculate the water level of the reservoir based on the relationship between the water volume and the water demand data,
      When the water level of the reservoir is near the upper and lower limits of the set reservoir, increase or decrease the number of pumps when calculating the water supply amount,
      Based on the water supply amount, for each of the upper and lower limits of the reservoir to be set, obtain the power amount per predetermined time and the peak power taking the maximum value among the power amount,
      Among the acquired peak power, a simulation unit that extracts the minimum peak power;
    An electric energy fee calculation unit that calculates an electric energy fee based on the peak electric power extracted by the simulation unit and the electric energy for the peak electric power, and outputs a calculation result of the electric energy fee to the plant;
With
  The simulation unit is a water reservoir level setting system that outputs the upper and lower limits of the reservoir when the extracted peak power is acquired as a set value to the plant.

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