JPH11202943A - Water distributing reservoir operation controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water distributing reservoir operation controller which can operate a water distributing reservoir safely and efficiently while automatically correcting the operation plan of the water distributing reservoir. SOLUTION: This controller 1 inputs a water reception amount plan value and a water distribution plan value set by a water reception amount plan value setting means 2 and a water distribution amount plant value setting means 3 to a water distribution amount correcting means 4 together with a water reception amount actual value, a water level, and a water distribution amount actual result value obtained from a water reception side flowmeter 14, the water distributing reservoir 15, and a water distribution side flowmeter 17. Here, the water distribution amount correcting means 4 corrects the water distribution amount plan value according to the water reception amount plan value, water reception amount actual result value, water level, and water distribution amount actual result value by using a neural network to calculate a water distribution amount target value. This calculated water distribution amount target value is inputted to a water distribution amount control means 5 and the water distribution amount from the water distributing reservoir 15 by a water distributing pump 16 is so controlled that the water distribution amount actual result value obtained from the water distribution side flowmeter 17 follows up the water distribution amount target value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a reservoir operation control device for controlling the operation of a reservoir in a water supply plant.

[0002]

2. Description of the Related Art Generally, a water distribution reservoir (buffer) of a water supply plant is used for storing purified water produced at a water purification plant and supplying the purified water to consumers as needed. Conventionally, in such a reservoir of a waterworks plant, the flow rate of purified water drawn into the reservoir (the amount of water received) and the flow rate of purified water distributed from the reservoir (the amount of water distribution) determine the operating range (upper and lower water levels) of the reservoir. The operation is performed based on the preset values of the water receiving amount and the water distribution amount set in advance as a reference.

[0003]

As described above, in a conventional reservoir, the operation is performed on the basis of a predetermined amount of received water and a planned amount of water distribution. However, in the above-mentioned conventional reservoir, since the operation is performed based on only the planned values of the received water amount and the distribution amount, the planned values of the received water amount and the distribution amount and the actual values are set. If an error occurs, it will be difficult to operate the reservoir as planned. For this reason, in a conventional reservoir, an operator (operator) periodically monitors the water level of the reservoir, and manually corrects the planned values of the amount of water received and the amount of water distribution as necessary.

[0004] However, such a conventional operation method requires an operator who has specialized knowledge regardless of day and night, which causes a problem of increasing labor costs. In addition, since the monitoring and correction are performed manually, there is an advantage that a flexible operation can be performed in consideration of the operation know-how of the operator, but there is a problem that an operation error or the like easily occurs during the operation.

The present invention has been made in view of the above points, and a reservoir operation control device capable of safely and efficiently operating a reservoir while automatically correcting the reservoir operation plan. The purpose is to provide.

[0006]

According to the present invention, there is provided a reservoir operation control device for controlling the operation of a reservoir in a water supply plant, wherein a planned reservoir amount setting unit for setting a planned reservoir amount of the reservoir; A water distribution plan value setting means for setting a water distribution plan value of the reservoir, a water receiving plan value set by the water receiving plan value setting means, and the water distribution amount based on an operation result value of the water reservoir; A distribution amount correction means for correcting a distribution amount plan value set by the plan value setting means to calculate a distribution amount target value, and a distribution of the distribution reservoir based on the distribution amount target value calculated by the distribution amount correction means. A distribution reservoir operation control device comprising: a distribution amount control unit that controls a water amount.

According to the present invention, the water distribution plan value set by the water distribution plan value setting means based on the water reception plan value set by the water reception plan value setting means and the actual operation value of the reservoir. To calculate the water distribution target value and control the water distribution amount of the reservoir based on the calculated water distribution target value. It can be operated efficiently.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of a reservoir operation control device according to the present invention.

First, referring to FIG. 1, a description will be given of the reservoir equipment controlled by the reservoir operation control device. As shown in FIG. 1, the reservoir facility 20 includes a reservoir 15 for storing purified water produced in a water purification plant (not shown), and a purified water provided on the receiving side of the reservoir 15 and drawn into the reservoir 15. And a water distribution pump 16 provided on the water distribution side of the distribution reservoir 15 for distributing purified water stored in the distribution reservoir 15. In addition, reservoir 15
A water flow meter 14 for measuring the flow rate (water receiving amount) of purified water drawn into the reservoir 15 is provided on the water receiving side of the reservoir 15, and the purified water distributed from the reservoir 15 is provided on the distribution side of the reservoir 15. A water distribution side flow meter 17 that measures the flow rate (water distribution amount) is provided. Here, it is assumed that the water receiving valve 18 provided on the water receiving side of the water distribution reservoir 15 is always fully open.

Here, the reservoir operation control apparatus 1 operates from the receiving flow meter 14, the distribution reservoir 15, and the distribution flow meter 17 of the distribution reservoir equipment 20, such as the actual receiving water amount, the water level, and the actual amount of water distribution. In addition to acquiring the values, the distribution pump 1 is set based on the actual operation values and the planned and received water amount of the reservoir 15 set by the operator (operator).
6 controls the amount of water distribution from the reservoir 15.

The details of the reservoir operation control device 1 will be described below with reference to FIGS. 1 and 2. As shown in FIG. 1, the reservoir operation control device 1 includes a water receiving plan value setting unit 2 for setting a water receiving planned value of the reservoir 15, and a water distribution planning value for setting the water receiving planned value of the reservoir 15. The receiving means plan value set by the setting means 3 and the receiving water plan value setting means 2 and the actual receiving water quantity, the water level and the water level acquired from the receiving flow meter 14, the reservoir 15 and the distribution flow meter 17 The distribution amount correction means 4 for correcting the distribution amount plan value set by the distribution amount plan value setting means 3 based on the actual water amount value and calculating the distribution amount target value, and the distribution amount correction means 4 calculates the distribution amount target value. A water distribution amount control means for controlling a water distribution amount from a water reservoir by a water distribution pump based on a water distribution target value;

Here, the planned water receiving amount setting means 2 and the planned water distribution amount setting means 3 are for the operator to set the planned water receiving amount and the planned water discharging amount for 24 hours in advance. Yes, these water receiving plan value setting means 2
The planned water receiving amount and the planned water distribution value set by the planned water distribution amount setting means 3 are input to the water distribution correcting means 4. Further, the actual received water amount and the water level obtained from the water receiving side flow meter 14 and the distribution reservoir 15 are input to the water distribution amount correcting means 4. Further, the actual water distribution amount value obtained from the water distribution side flow meter 17 is input to the water distribution amount correction means 4 and the water distribution amount control means 5.

FIG. 2 is a diagram showing details of the water distribution amount correction means 4 shown in FIG. As shown in FIG. 1 and FIG. 2, the water distribution amount correction means 4 is provided with a water receiving amount planned value set by the water receiving amount planned value setting means 2, a water receiving side flow meter 14, a distribution reservoir 15 and a water distribution side flow meter 17. The data normalization means 6 for normalizing the received water amount actual value, the water level and the actual water distribution amount obtained from the above and the correction value for correcting the water distribution planned value set by the water distribution planned value setting means 1 Have. In the data normalizing means 6, the water receiving amount error is calculated based on the water receiving amount planned value and the water receiving amount actual value, and the water level error is calculated based on the water receiving amount planned value, the water distribution planning value and the water level, Finally, the normalized water receiving amount error, water level error, water level, actual distribution amount value, and correction value are output.

Further, the water distribution amount correcting means 4 includes a water receiving amount error, a water level error, a water level,
A water distribution correction value learning means 7 for sequentially learning the relationship (weight coefficient) between the water distribution quantity actual value and the correction value using a neural network, and a data normalization method based on the weight coefficient learned by the water distribution correction value learning means 7. Water supply amount correction value calculating means 8 for calculating correction values corresponding to the current water receiving amount error, water level error, water level and actual water distribution amount value normalized by the conversion means 6, and the water distribution amount correction value calculating means 8 And a water distribution target value calculating means 10 for calculating the water distribution target value by adding the corrected correction value to the water distribution plan value set by the water distribution plan value setting means 3.

Next, the operation of the first embodiment of the present invention having such a configuration will be described.

As shown in FIG. 1, the reservoir operation control device 1
In, first, for example, a planned water receiving amount and a planned water distribution amount for 24 hours are set as operation plan values of the reservoir 15 of the reservoir facility 20. More specifically, the planned water receiving volume setting value 2 sets a planned water receiving volume for the reservoir 15 for 24 hours (for example, in one-hour units), and the planned water receiving volume setting value 3 sets the 24 of the reservoir 15. A water distribution plan value for an hour (for example, for one hour) is set.

Next, the planned water receiving amount and the planned water distribution value set in this way are based on the actual water receiving amount, the water level, and the water level acquired from the receiving side flow meter 14, the reservoir 15 and the distribution side flow meter 17. And distribution amount correction means 4 together with the distribution amount actual value
The distribution amount correction means 4 corrects the distribution amount plan value based on the planned amount of received water, the actual amount of received water, the water level and the actual value of the amount of distributed water, and calculates the target amount of distributed water.

Here, referring to FIG. 2, a method of calculating the water distribution target value in the water distribution correction means 4 will be described. FIG.
As shown in (1), the distribution amount correcting means 4 first obtains the planned water amount set by the planned water amount setting means 2 and the received flow meter 14, the distribution reservoir 15, and the distributed flow meter 17. The received water amount actual value, the water level and the water distribution amount actual value, and the correction value for correcting the water distribution amount planned value set by the water distribution amount planned value setting means 1 (the correction calculated by the water distribution amount correction value calculating means 8) Value) and data normalization means 6
And the data normalizing means 6 normalizes each value in the range of [−1.0, 1.0] or [0.0, 1.0]. In the data normalizing means 6, a water receiving amount error is calculated based on the water receiving amount planned value and the water receiving amount actual value, and a water level error is calculated based on the water receiving amount planned value, the water distribution planning value and the water level, Finally, the normalized received water amount error, water level error, water level, actual water distribution amount value, and correction value are output.

Next, the water receiving amount error, water level error, water level, distribution amount actual value and correction value thus normalized are input to the distribution amount correction value learning means 7, and the distribution amount correction value learning means 7 The relationship (weighting factor) among the water receiving error, the water level error, the water level, the actual water distribution amount, and the correction value is sequentially learned using a neural network.

Thereafter, the weighting factor learned in this way is inputted to the water distribution amount correction value calculating means 8, and the water distribution amount correction value calculating means 8 normalizes the data by the data normalizing means 6 based on the weighting coefficient. The correction value corresponding to the current received water amount error, the water level error, the water level, and the actual water distribution amount value is calculated.

The correction value calculated in this way is input to the water distribution target value calculation means 10, and the correction value is set by the water distribution plan value setting means 3 in the water distribution target value calculation means 10. A water distribution target value is calculated in addition to the water distribution plan value.

The water distribution target value calculated in this way is input to the water distribution control means 5 (see FIG. 1). The distribution amount of water from the reservoir 15 by the distribution pump 16 is controlled so that the acquired distribution amount actual value follows.

As described above, according to the first embodiment of the present invention, in the water distribution amount correcting means 4, the water receiving amount planned value set by the water receiving amount planned value setting means 2 and the water receiving side flow meter 1
4. Based on the actual received water amount, the water level, and the actual distributed water amount value obtained from the reservoir 15 and the distribution-side flow meter 17,
The data normalizing means 6, the water distribution correction value learning means 7 and the water distribution correction value calculating means 8 calculate the correction values corresponding to the present water receiving error, the water level error, the water level and the water distribution actual value by using a neural network. Since the correction value thus calculated is added to the water distribution plan value set by the water distribution plan value setting means 3, the water distribution target value is calculated.
Reservoir 15 while automatically correcting the operation plan of reservoir 15
Can be operated safely and efficiently. In addition, since the correction value is calculated using the neural network, the operation of the reservoir 15 can be automated in a manner similar to the work manually performed by the operator until now.

In the above-described first embodiment, the present water receiving amount error is determined based on the past water receiving amount actual value, the water level, the distribution amount actual value, and the like of the reservoir 15 using the neural network. Although the correction value corresponding to the water level error, the water level, and the actual water distribution amount is calculated, the correction value may be calculated using another method such as fuzzy logic, etc. .

In the first embodiment described above, the correction value calculated by the water distribution amount correction value calculating means 8 of the water distribution amount correcting means 4 is directly input to the water distribution target value calculating means 10. However, as illustrated in FIG. The correction value calculated by the value calculation means 8 may be converted into one of a plurality of values set in stages. The water distribution amount correction means 4 shown in FIG. 3 is substantially the same as the water distribution amount correction means 4 shown in FIG. 2 except that a step correction value calculation means 9 is added. Are denoted by the same reference numerals, and detailed description is omitted.

When the correction value calculated by the water distribution amount correction value calculating means 8 is converted into one of a plurality of values set in stages and input to the water distribution target value calculating means 10, Since the correction value input to the water amount target value calculating means 10 can be a value reflecting the operation know-how of the operator, the water reservoir 15 can be operated more efficiently. In addition, since the range of values input to the water distribution target value calculating means 10 can be limited, it is possible to prevent operations that are significantly deviated from work that has been performed manually up to now, and Therefore, a sense of security can be given to a plant operator or a manager.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 1, 4 and 5. FIG. 1, 4 and 5 show a second embodiment of the reservoir operation control device according to the present invention. The second embodiment of the present invention is substantially the same as the first embodiment shown in FIGS. 1 to 3 except that the configuration of the water distribution amount correction means is different. In the second embodiment of the present invention, the same parts as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 1 and 4, the water distribution amount correction means 4 includes a water receiving amount plan value set by the water receiving amount planned value setting means 2 and a distribution reservoir 15 obtained from the water receiving side flow meter 14. Receiving water amount error calculating means 11 for calculating a receiving water amount error based on the actual receiving water amount value, a receiving water amount error calculated by the receiving water amount calculating means 11, and a water distribution plan value setting means 3
And a water distribution target value calculating means 13 for calculating a water distribution target value based on the water distribution plan value set by (1).

Next, the operation of the second embodiment of the present invention having such a configuration will be described.

As shown in FIG. 1, the reservoir operation control device 1
, The planned water receiving amount and the planned water discharging amount for the 24-hour (eg, hourly) of the reservoir 15 set by the planned water receiving amount setting means 2 and the planned water distribution amount setting means 3 are the receiving side flow rates. The water distribution amount correction means 4 is input to the water distribution amount correction means 4 together with the water reception amount actual value acquired from the total 14.
In, the water distribution plan value is corrected based on the water reception amount plan value and the water reception amount actual value, and the water distribution target value is calculated.

Here, referring to FIG. 4, a description will be given of a method of calculating the water distribution target value in the water distribution correction means 4. FIG.
As shown in (2), in the water distribution amount correcting means 4, first, the water receiving amount planned value set by the water receiving amount planning value setting means 2 and the water receiving amount actual value acquired from the water receiving side flow meter 14 are used as the water receiving amount. The received water amount is input to the error calculating means 11, and the received water amount error calculating means 11 calculates the received water amount error as a difference between the received water amount planned value and the received water amount actual value.

Thereafter, the water receiving amount error thus calculated is input to the water distribution target value calculating means 13, and the water receiving amount error is set by the water distribution planning value setting means 3. The target water distribution amount is calculated in addition to the planned water distribution amount.

The calculated water distribution target value is input to the water distribution control means 5 (see FIG. 1), and the distribution water control means 5 supplies the distribution water target value to the distribution flow meter 17. The distribution amount of water from the reservoir 15 by the distribution pump 16 is controlled so that the acquired distribution amount actual value follows.

As described above, according to the second embodiment of the present invention, in the water distribution amount correcting means 4, the water receiving amount planned value set by the water receiving amount planned value setting means 2 and the water receiving side flow meter 1
The water receiving amount error is calculated based on the water receiving amount actual value acquired from the water distribution amount 4 and the water receiving amount error calculated in this way is added to the water distribution amount planning value set by the water distribution amount planning value setting means 3 and distributed. Since the water amount target value is calculated, the operation of the reservoir 15 can be safely and efficiently operated while automatically correcting the operation plan of the reservoir 15 so that the operation range of the reservoir 15 is within the upper and lower water levels.

In the second embodiment described above, the correction value calculated by the water receiving amount error calculating means 11 of the water distribution amount correcting means 4 is directly input to the water distribution amount target value calculating means 13. As shown in FIG. 5, a step water receiving amount error calculating means 12 is added between the water receiving amount error calculating means 11 and the water distribution target value calculating means 13, and the water receiving amount error calculating means 12 The water receiving amount error calculated by the calculating means 11 may be converted into one of a plurality of values set in stages. Here, the water distribution amount correction means 4 shown in FIG.
Since the rest is substantially the same as the water distribution amount correcting means 4 shown in FIG. 4 except for the addition of, the same parts are denoted by the same reference numerals and detailed description is omitted.

When the water receiving amount error calculated by the water receiving amount calculating means 11 is converted into any one of a plurality of values set in a stepwise manner and inputted to the water distribution target value calculating means 13, the distribution Since the water receiving amount error input to the water amount target value calculating means 13 can be set to a value reflecting the operation know-how of the operator, etc., the distribution reservoir 15 can be operated more efficiently. In addition, since the range of the value input to the water distribution target value calculating means 13 can be limited, it is possible to prevent the operation that has been significantly deviated from the work that has been manually performed so far, and Therefore, a sense of security can be given to a plant operator or a manager.

[0037]

As described above, according to the present invention, the planned water receiving amount set by the planned water receiving amount setting means,
Based on the actual operation value of the distribution reservoir, the distribution amount plan value set by the distribution amount plan value setting means is corrected to calculate the distribution amount target value, and the distribution reservoir is calculated based on the calculated distribution amount target value. Therefore, the reservoir can be operated safely and efficiently while automatically correcting the operation plan of the reservoir.

[Brief description of the drawings]

FIG. 1 is a block diagram showing first and second embodiments of a distribution reservoir operation control device according to the present invention.

FIG. 2 is a block diagram showing details of a water distribution amount correction unit in the first embodiment of the water distribution reservoir operation control device according to the present invention.

FIG. 3 is a block diagram showing a modification of the water distribution amount correction means shown in FIG. 2;

FIG. 4 is a block diagram showing details of a water distribution amount correction unit in a water reservoir operation control device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a modification of the water distribution amount correction means shown in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reservoir operation control device 2 Plan of receiving water plan value setting means 3 Planning means of water distribution amount setting means 4 Water distribution amount correction means 5 Water distribution amount control means 6 Data normalization means 7 Water distribution amount correction value learning means 8 Water distribution amount correction value calculating means 9 Step correction value calculating means 10, 13 Water distribution target value calculating means 11 Water receiving amount error calculating means 12 Stage water receiving amount error calculating means 14 Water receiving side flow meter 15 Reservoir 16 Water distribution pump 17 Water distribution side flow meter 18 Water receiving valve 20 Distribution Water pond equipment

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kawaji, etc. 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant (72) Inventor Tatsuo Ashiki 1-1-1, Shibaura, Minato-ku, Tokyo Stock Company Toshiba head office

Claims (5)

[Claims] 1. A reservoir operation control device for controlling the operation of a reservoir in a waterworks plant, comprising: a reservoir amount planning value setting means for setting a reservoir amount planning value of the reservoir; and a reservoir amount planning value of the reservoir. The water distribution plan value setting means to be set, the water reception plan value set by the water reception plan value setting means, and the water distribution plan value setting means based on the actual operation value of the reservoir. A distribution amount correction unit that corrects a distribution amount plan value to calculate a distribution amount target value; and a distribution amount control unit that controls a distribution amount of the distribution reservoir based on the distribution amount target value calculated by the distribution amount correction unit. A reservoir operation control device comprising: 2. The water distribution amount correction means includes: a water reception plan value set by the water reception plan value setting means; an operation actual value of the reservoir; and a water distribution amount set by the water distribution plan value setting means. Data normalizing means for normalizing a correction value for correcting the water flow plan value; and sequentially learning a relationship between the water receiving plan value, the operation actual value, and the correction value normalized by the data normalizing means. Distribution amount correction value learning means, and the received water amount plan value, which is learned by the distribution amount correction value learning means, and the current operation result value of the reservoir based on the relationship between the operation result value and the correction value. Water distribution amount correction value calculating means for calculating a correction value to be calculated, and a correction value calculated by the water distribution amount correction value calculating means,
2. The reservoir operation control device according to claim 1, further comprising a distribution amount target value calculating unit that calculates a distribution amount target value based on the distribution amount plan value set by the distribution amount plan value setting unit. 3. . 3. The water distribution amount correction means further includes a step correction value calculation means for converting the correction value calculated by the water distribution amount correction value calculation means into one of a plurality of values set in stages. The reservoir operation control device according to claim 2, characterized in that: 4. The water receiving amount correction means for calculating a water receiving amount error based on a water receiving amount planned value set by the water receiving amount planning value setting means and a water receiving amount actual value of the reservoir. Calculation means, and a water distribution target value calculation for calculating a water distribution target value based on the water distribution error calculated by the water distribution error calculation means and the water distribution plan value set by the water distribution plan value setting means. 2. A reservoir operation control device according to claim 1, further comprising means. 5. The water distribution amount correcting means further includes a step water receiving amount error calculating means for converting the water receiving amount error calculated by the water receiving amount error calculating means into one of a plurality of values set in stages. 3. The reservoir operation control device according to claim 2, wherein: