JP2003119746A - River facility operation plan preparation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a river facility operation plan preparation device capable of quickly finding an estimation value of water levels even at points influencing the water level by operation of a river facility. SOLUTION: The river facility operation plan preparation device has an outer water level estimation means (2) for estimating an outer water level after a prescribed time at points not substantially receiving influence due to operation of the river facility including a water gate, a pump plant and the like on the basis of rainfall data from the past to the present time and water level water data of a river from the past to the present time, an operation plan input means (4) for inputting an operation plan of the river facility, an inner water level estimation means (6) for estimating an inner water level after a prescribed time at points receiving influence due to operation of the river facility on the basis of each datum including the outer water level estimated by the outer water level estimation means and an operation plan of the river facility input by the operation plan input means, and a display means (8) for displaying the inner water level estimated by the inner water level estimation means (6).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pump plant,
The present invention relates to a river facility operation plan creation device for creating an operation plan of a river facility such as a floodgate, and a river facility automatic operation device for operating a river facility based on the created operation plan.

[0002]

2. Description of the Related Art Various measures are taken to prevent disasters such as flooding of rivers and floods during heavy rainfall. For example, large and small rivers are connected by spillways, sluices and pump plants are installed between each river and spillways, and the sluices are opened and closed according to the water level of the connected main river, tributary, and spillway, or By operating the pump plant, the flood of each river is prevented. However, it takes a certain amount of time to open and close the sluice, and the amount of water that can be drained per hour by the pump plant is also limited. Therefore, while predicting changes in the water level of each river and discharge channel, the sluice and pump plant It is necessary to properly operate river facilities such as.

In order to accurately predict the water level at a certain point such as a river, it is necessary to make calculations based on a physical model of the entire basin. Physical models should predict the amount of rainfall that has fallen in the river basin, the amount of water that flows into the river from the basin where it has rained, the amount of water absorbed by the soil in the basin, and the water level from the past to the present. Based on the water level of the river upstream and downstream of the point, the amount of water flowing into and out of the point where the water level should be predicted is calculated, and the water level that should be predicted is calculated.

On the other hand, Japanese Unexamined Patent Publication No. Hei 9 (1999) -related to a river water level prediction device
In Japanese Patent Publication No. -95917, a river water level prediction device model is described. This river water level prediction model uses a statistical method to predict the water level based on the amount of rainfall from the past to the present of the point where the water level should be predicted and the water level from the past to the present of the point where the water level should be predicted. It is a thing. That is, the water level to predict However, L (t + 1): outside water level after a predetermined time, L (t-i): water level data of river from past to present, R (t-j): rainfall data from past to present, a _i , b _j , c ₀ : constant, is calculated based on the equation.

In this river water level prediction model, first, rainfall data R (t-j) and water level data L (t-i) at a point where the water level should be predicted are sampled in time series. Next, one of the relational expressions is obtained by substituting these data into the right side of (Equation 1) and equating the value with the actually observed water level L (t + 1) on the left side. Similarly, a large number of such relational expressions are obtained for a large number of rainfall data and water level data, and a constant a _i , b _j , c _{0 is} obtained by using a statistical method such as multiple regression analysis.
The value of is determined and this value is stored in the memory or the like.

When actually predicting the water level of a river, the values of the stored constants a _i , b _j , and c ₀ , and the water level L (t-i) at the point where the water level should be predicted from the past to the present ) And the rainfall amount R (t-j) are substituted into the right side of (Formula 1) to calculate the water level L (t + 1) after a predetermined time.

[0007]

However, in the water level prediction using the above-mentioned physical model, a large amount of data and a huge amount of calculation are required to obtain the predicted value, so it takes a long time to obtain the predicted value. It takes time. Therefore, there is a problem that it is difficult to predict the water level using a physical model and to make a quick and accurate operation plan for the river facility based on the predicted value.

On the other hand, in the river water level prediction model disclosed in Japanese Patent Laid-Open No. 9-95917, which uses the above-mentioned statistical method, the water level can be predicted based on a relatively small amount of rainfall and water level data. , It is possible to quickly obtain the predicted value. However, at the point where the water level changes due to the operation of artificially operated locks and pump plants, the operation of locks cannot be accurately added to the river water level prediction model based on past statistical data. There is a problem that cannot be predicted.

Therefore, the present invention provides a river facility operation plan preparation device capable of promptly obtaining a predicted value of the water level even at a point where the operation of the artificially operated river facility affects the water level. It is an object.

[0010]

In order to achieve the above-mentioned object, the river facility operation plan creating device of the present invention is based on rainfall data from the past to the present and water level data of the river from the past to the present, At points that are virtually unaffected by the operation of river facilities including floodgates, pump plants, etc.
Outside water level prediction means for predicting the outside water level after a predetermined time, operation plan proposal input means for inputting the operation plan of the river facility, outside water level predicted by the outside water level prediction means, and operation plan Based on each data including the operation plan of the river facility input by the plan input means, the inner water level prediction means for predicting the inner water level after a predetermined time at the point affected by the operation of the river facility, and this Display means for displaying the inner water level predicted by the inner water level predicting means.

In the present invention thus constructed,
The outside water level prediction means predicts the outside water level at a point that is not substantially affected by the operation of the river facility. This predicted value is calculated by a mathematical expression that associates rainfall data from the past to the present and water level data of the river from the past to the present with the outside water level after a predetermined time. Next, the operator of the river facility operation plan creation device inputs the operation plan draft of the river facility by the operation plan draft input means. The inner water level prediction means predicts the inner water level after a predetermined time at a point affected by the operation of the river facility. This predicted value is calculated based on the predicted outside water level and the input operation plan of the river facility. The operator rebuilds the operation plan with reference to the predicted internal water level, and repeats the above operations until the desired operation plan can be created.

According to the present invention, in the operation planning of a river facility, the outside water level at a point that is not affected by the operation of the river facility is calculated by a relatively simple mathematical expression, and is affected by the operation of the river facility near the river facility. Since the internal water level at the point is calculated using a relatively precise mathematical formula, the internal water level affected by the operation of the river facility can be predicted quickly and accurately.

In the present invention, the external water level predicting means is a mathematical formula. However, L (t + 1): outside water level after a predetermined time, L (t-i): water level data of river from past to present, R (t-j): rainfall data from past to present, a _i , b _It is better to predict the external water level by _j , c ₀ : constants.

In the present invention thus constructed,
The external water level is calculated by a mathematical expression that associates the rainfall data from the past to the present and the water level data of the river from the past to the present, and the external water level after a predetermined time, which are statistically obtained in advance.

Further, preferably, the inner water level predicting means of the river facility operation plan creating apparatus of the present invention uses a physical model to calculate the water level upstream, the water level downstream and the inner water level of the point where the inner water level should be predicted. The inner water level is predicted based on the opening of the sluice adjacent to the point to be predicted, the water levels on both sides of the sluice, and the discharge of water by the pump adjacent to the point where the inner water level should be predicted.

In the present invention thus constructed,
The internal water level is calculated using a physical model based on the water level difference on both sides of the lock and the amount of water pumped out by the pump. As a result, the water level can be accurately predicted even at a point where the water level changes due to the operation of river facilities such as floodgates and pumps.

Further, the river facility operation plan creating apparatus of the present invention further has a recording means for recording the operation results of a plurality of pumps provided in the pump plant, and the operation plan proposal inputting means inputs the river facility. It is possible to select which of the plurality of pumps is to be operated based on the operation plan draft and the operation record recorded in the recording unit.

In the present invention thus constructed,
The recording means records the operation results of a plurality of pumps provided in the pump plant for which the operation plan should be created, and the operation plan draft of the pump plant input by the operator, and
Which pump in the pump plant is to be operated is determined based on the operation record of each pump. This allows
It is possible to operate a plurality of pumps provided in the pump plant for an equal time.

Further, the river facility operation plan creating apparatus of the present invention creates an operation plan draft for creating the operation plan of the river facility by using the dynamic programming method based on the outside water level predicted by the outside water level predicting means. It is preferable to further include means and operation plan suggestion means for displaying the operation plan prepared by the operation plan preparation means.

In the present invention thus constructed,
The operation plan generating means generates a plurality of preferable operation plans of the river facility by using the dynamic programming which is one of the optimization methods. The generated plurality of operation plan proposals are presented to the operator by the operation plan proposal presenting means, and the operator creates an appropriate operation plan with reference to the presented operation plan proposal. This allows the operator to easily create an appropriate operation plan.

Further, the river facility operation plan creation device of the present invention changes the operation plan when a predetermined deviation occurs between the predicted value of the inner water level by the inner water level prediction means and the actual inner water level. It is preferable to further include operation plan modification means for modifying the operation plan proposal when the need arises.

In the present invention thus constructed,
The operation plan modification means is inferior in the accuracy of predicting the internal water level, and if there is a large error between the actual internal water level and the predicted internal water level, or if there is a pump failure, etc. In such a case, the operation plan currently being executed is modified and a new operation plan proposal is presented to the operator. As a result, even if the water level in the operation plan deviates from the actual water level, the operation plan can be promptly corrected.

In addition, the river facility operation plan creation device of the present invention has a plurality of river facility operation plan creation devices, and the value of the outside water level of one of the river facility operation plan creation devices is the other river facility operation plan creation device. It can be configured to be given by the predicted value of the internal water level by the preparation device. According to the present invention configured as described above, an operation plan of a river facility can be quickly created even when a large number of river facilities affect each other in a complicated manner.

The river facility automatic operation system of the present invention is
Based on the rainfall data from the past to the present and the water level data of the river from the past to the present, the outside water level after a predetermined time at the point that is not substantially affected by the operation of the river facility including the floodgate, pump plant, etc. The external water level prediction means for prediction and the operation plan of the river facility are arbitrarily generated, and the operation of the river facility is performed based on the generated operation plan and the external water level predicted by the external water level prediction means. An operation plan generation means that predicts the internal water level of the affected point after a predetermined time and creates an optimal operational plan of the river facility using dynamic programming based on this predicted internal water level, And a river facility operation means for operating the river facility based on the optimum operation plan created by the operation plan generation means.

In the river facility automatic driving apparatus according to the present invention thus configured, the driving plan generating means creates one optimum driving plan, and the river facility driving means makes the optimum driving plan based on the optimum driving plan. Operate river facilities automatically. This allows the river facilities to operate automatically.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. First, a river facility operation plan creation device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a block diagram of a river facility operation plan creation device according to a first embodiment of the present invention. As shown in FIG. 1, the river facility operation plan creation apparatus 1 according to the first embodiment includes an outside water level prediction means 2 for predicting an outside water level that is not affected by the operation of the river facility, and a river facility operation plan creation apparatus. The operator A of 1 inputs an operation plan proposal input means 4 for inputting an operation plan proposal of a pump, a water gate, etc., and an operation plan inputted by the outside water level and operation plan proposal input means 4 calculated by the outside water level prediction means 2. By the plan
The inner water level predicting means 6 for predicting the inner water level affected by the operation of the river facility, the display means 8 for displaying the inner water level calculated by the inner water level predicting means 6, and the operation based on the operation plan Recording means 10 for recording past operation records of a plurality of pumps to be used.

The outside water level predicting means 2 is an AMeD
Based on rainfall data sent from meteorological satellites such as AS) or a predetermined weather station, and water level data sent from a predetermined water level gauge or a predetermined weather station, using (Formula 1) for a predetermined time It is configured to calculate a later predicted outside water level. Specifically, the external water level prediction means 2 can be configured by a computer, a hard disk, a computer program for operating the hard disk, and the like. Alternatively, the external water level prediction means 2 may include a receiving device (not shown) for directly receiving the rainfall data and the water level data transmitted from each place.

The operation plan proposal input means 4 is constructed so that the operator A of the river facility operation plan preparation apparatus 1 can input the operation plan proposal of the river facility. Specifically, the operation plan input means 4 can be composed of a computer keyboard, mouse, or the like.

The inner water level predicting means 6 is the outer water level calculated by the outer water level predicting means 2, the operation plan of the sluice gates, pumps, etc. input by the operation plan input means 4, rainfall data from the past to the present, and the water level. It is configured to calculate the internal water level using a physical model based on the data. Specifically, the inner water level prediction means 6 is a computer,
It can be configured by a hard disk, a computer program for operating the hard disk, and the like.

The display means 8 is configured to display the inner water level calculated by the inner water level predicting means 6. Specifically, the display unit 8 can be configured by a computer display, a printer, or the like.

The recording means 10 is configured to record the past operation results of the plurality of pumps to be operated by the operator A based on the created operation plan. Specifically, the recording unit 10 can be configured by a hard disk or the like. However, the recording unit 10 can be omitted when there is one pump or when it is not necessary to make the operating times of the pumps uniform.

Next, the operation of the river facility operation plan creating apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 4. Here, the operation of the present embodiment will be described by taking as an example the case of creating an operation plan of a river facility having a floodgate provided in the river and the discharge channel shown in FIG. 2 and a pump plant provided with a plurality of pumps. As shown in FIG. 2, the river facility is provided at each connection point of the main river B1, the tributaries B3 and B4, and the discharge channel B2 connecting them. That is, a water gate G3 and a pump plant P are provided between the main river B1 and the water discharge passage B2, a water gate G2 is provided between the tributary river B3 and the water discharge passage B2, and a tributary river B4 and the water discharge passage B2 are connected. A water gate G1 is provided between them. Further, the water level of the discharge channel B2 is assumed to be L1 over the entire region, the water level upstream of the main river B1 is L2, the water level near the sluice G3 is L5, and the water level near the estuary is L7. In addition, the water level upstream of the tributary B3 is L
9. The water level near the sluice G2 is L4, the water level upstream of the tributary B4 is L8, the water level near the sluice G1 is L3, and the water level near the estuary is L6.

Further, since the capacity of the main river B1 is sufficiently larger than the amount of water discharged or flowing in from the discharge channel B2 by the floodgate G3 and the pump plant P, each water level L of the main river
2, L5 and L7 shall not be affected by the opening and closing of the water gate G3 and the operation of the pump plant P. It is assumed that the water level L4 near the sluice G2 of the tributary B3 is affected by the opening and closing of the sluice G2, and the water level L9 upstream of the tributary B3 is mainly determined by the amount of rainfall and is not affected by the opening and closing of the sluice G2. Further, the water level L3 near the sluice G1 of the tributary B4 is affected by the opening and closing of the sluice G1 and the water level L upstream of the tributary B4.
8 and the water level L6 near the estuary are mainly determined by the amount of rainfall and the tide level near the estuary, and are not affected by the opening and closing of the floodgate G1. In this specification, a water level that is not affected by the operation of a river facility such as a floodgate or a pump plant is called an outer water level, and a water level that is affected by the operation is called an inner water level.

FIG. 3 is a flow chart showing the operation of the first embodiment of the present invention. First, in step S1, the outside water level prediction means 2 causes the outside water levels L2, L after a predetermined time.
5, L6, L7, L8, L9 are calculated. For example, in order to calculate the outside water level L2 (1) one hour upstream of the main river B1, the current outside water level L2 (0), one hour before the outside water level L2 (-1), and two hours before the outside water level L2 (0). Water level L2 (-
2). ． ． , And the current rainfall amount R (0), the rainfall amount R (-1) one hour ago, and the rainfall amount R (-2) two hours ago. ． ．
Are respectively substituted into (Equation 1). Also, the constants a _i , b _j , c
_{As 0} , the _value previously determined by the statistical method for the point of the water level L2 and stored in the outside water level prediction means 2 is used. In the present embodiment, the values up to 4 hours before, that is, the values of the outside water levels L2 (0) to L2 (-4) and the rainfall amounts R (0) to R (-4) are used, and after 1 hour. The outer water level L2 (1) of is calculated.

Similarly, the water level data from the present to the past of each point, the constants a _i , b _j , determined for each point,
The outside water levels L5, L6, L7, L8, and L9 after one hour are calculated based on c ₀ and the rainfall data. As for the rainfall data R, usually only one point is available for each 10 km square observed by the Meteorological Agency, so in most cases the same data is used in the calculation of the outside water level at each point. It

Next, in step S2, the operator A of the river facility operation plan creating apparatus 1 operates the operation plan proposal input means 4
Input the operation plan of the river facility. That is, the time of opening / closing the water gates G1, G2, G3, the opening of the water gate, the time of operating the pump plant, the number of pumps provided in the pump plant, and the like are input. When the number of operating pumps is input, the operation plan input means 4 causes the input operating conditions of the pump and the recording means 10 to be input.
Check the operation record data of each pump recorded in, and select the pumps in ascending order of operation record.

Next, in step S3, based on the external water level calculated in step S1 and the operation plan of the river facility input in step S2, the physical model is used to calculate the internal water level L1 after a predetermined time, L3 and L4 are calculated. The inner water level L1 after a predetermined time is calculated using (Equation 2).
Further, FIG. 4 is a block diagram showing the relationship of (Formula 2).

A1 {L1 (t) -L1 (t-dt)} / dt = Q _G1 + Q _G2 + Q _G3 -Q _P (Formula 2) where A1: bottom area of discharge channel B2, Q _G1 : per unit time Flow rate into or out of the floodgate G1, Q _G2 : Flow rate into or out of the floodgate G2 per unit time, Q _G3 : Flow rate into or out of the floodgate G3 per unit time, Q _P : Pump per unit time The flow rate discharged or pumped by the plant P.

Here, L1 (t) is the water level of the discharge channel B2 at time t, and dt is, for example, 0.1 seconds to 1 second.
It is a predetermined minute time of about a minute, and the constant A1 is the discharge channel B2.
Is the bottom area of. Q _G1 is the amount of water flowing into the discharge channel B2 from the tributary B4 through the floodgate G1 per unit time, and is generally expressed as a function of the water level difference between the inner water levels L1 and L3 and the opening degree of the floodgate G1. Therefore, Q _G1 is 0 when the sluice G1 is closed. Similarly, Q _G2 is the internal water level L
1, is a function of the water level difference between L4 and the opening of the water gate G2, and Q _G3 is a function of the water level difference between the inner water level L1 and the outer water level L5, and the opening degree of the water gate G3. When the inner water level L1 is higher than the water level outside each sluice, water is discharged from the discharge channel B2.
Since it flows out from the outside, the sign of each water quantity becomes negative. Also, Q _P is by operating the pump plant P, the spillway B2 per unit time a volume of water discharged into the river B1, number of pumps to be operated, the value depending on the operating conditions of the pump changes. Furthermore, the pump plant P
The if not operate, the Q _P is 0, by reversing the pump, when the pump water to the spillway B2 from Motokawa B1, the value of Q _P is negative.

Next, the inner water level L3 after a predetermined time is calculated using (Equation 3). A3 {L3 (t) -L3 (t-dt)} / dt = Q _L8- Q _L6 + Q _G1 (Formula 3) where A3 is a predetermined bottom area near the water gate G1 of the tributary B4, and Q _{L8 is a} unit. Flow rate flowing in or out of the tributary B4 per hour, Q _L6 : Flow rate flowing out or inflowing to the downstream of the tributary B4 per unit time, Q _G1 : Flow rate flowing in or out of the floodgate G1 per unit time, Is.

Here, the constant A3 is the bottom area in the region near the floodgate G1 of the tributary B4, which is appropriately assumed in the creation of the physical model. _QL8 is the amount of water flowing into the region near the sluice G1 of the tributary B4 from the upstream of the tributary B4 per unit time, and is a function of the difference between the water levels of the outer water level L8 and the inner water level L3. Similarly, Q _L6 is the amount of water flowing from the vicinity of the floodgate G1 of the tributary B4 to the downstream of the tributary B4, and the external water level L6
And the inner water level L3 as a function of the difference in water level. However, when the water level of the outer water level L6 is higher than the water level of the inner water level L3, a backflow occurs, and in this case, the value of Q _L6 becomes negative.
In addition, Q _G1 is from the discharge channel B2 to the sluice G1 per unit time.
Is the amount of water flowing into the tributary B4 via the internal water level L1,
It is expressed as a function of the water level difference of L3 and the opening degree of the water gate G1. Also, when the water level of L3 is higher than the inner water level L1, water flows from the tributary B4 to the discharge channel B2, so Q _G1
The value of becomes negative.

Next, the internal water level L4 after a predetermined time is calculated using (Equation 4). A4 {L4 (t) -L4 (t-dt)} / dt = Q _L9 + Q _G2 (Formula 4) However, A4: a predetermined bottom area near the water gate G2 of the tributary B3, Q _L9 : per unit time Flow rate flowing in or flowing out of the tributary B3, Q _G2 : Flow rate flowing in or out of the floodgate G2 per unit time.

As in the case of the inner water level L3, Q _L9 is a function of the water level difference between the outer water level L9 and the inner water level L4, and Q _G2 is the water level difference between the inner water levels L1 and L4 and the opening of the sluice G2. Is a function of degrees.

In order to determine the internal water levels L1, L3, and L4 after a predetermined time, first, the values of the respective water amounts on the right side of (Equation 2) to (Equation 4) are calculated based on the current inner water level, outer water level, and river facility. Calculate based on the operating status (opening / closing status of each gate, operating status of pump, etc.). Next, these calculated values are substituted into (Equation 2) to (Equation 4) to obtain the rate of change of each inner water level L1, L3, L4 over time. By multiplying this change rate by a minute time, the inner water levels L1, L3, L4 after the minute time are obtained. Based on the inner water levels L1, L3, L4 after the minute time and the operation plan draft after the minute time, the value of each water amount on the right side of (Equation 2) to (Equation 4) is calculated. By repeating this calculation sequentially, the inner water level after a predetermined time, for example, one hour, is calculated. However, the procedure for calculating the inner water level using the physical model described above is an example, and the inner water level may be calculated using another calculation procedure.

Next, in step S4, the inner water levels L1, L3, L after the predetermined time calculated in step S3.
4 and the pump selected in step S2,
It is displayed on the display means 8. The operator A uses the display means 8
Based on the values of the inner water levels L1, L3, and L4 displayed in, the operation plan draft is rebuilt, and the operation plan draft input means 4 inputs a new operation plan draft. Thereafter, the operator A repeats the operations of steps S2 to S4 until an appropriate operation plan can be created. When the operation plan is created, the operator A operates each river facility according to the operation plan.

According to the river facility operation plan creating apparatus of the first embodiment of the present invention, the outside water level which is not affected by the operation of the river facility is calculated by the statistical calculation model, and the internal water level which is affected by the operation of the river facility is calculated. Since the water level is calculated by the physical calculation model, the water level at the point affected by the operation of the river facility can be calculated quickly. As a result, the operator of the river facility can try a number of different operation plan plans, so that it becomes possible to quickly make an appropriate operation plan. Further, since the pump to be operated is determined based on the operation record of each pump recorded in the recording means, each pump can be operated evenly.

Next, with reference to FIGS. 5 and 6, a river facility operation plan creating apparatus according to a second embodiment of the present invention will be described. The river facility operation plan creation device according to the second embodiment is
This is different from the first embodiment in that an operation plan of a river facility is automatically created and some operation plans are presented to the operator of the river facility. Therefore, here, only the points different from the first embodiment will be described, and description of the same points will be omitted.

FIG. 5 is a block diagram of a river facility operation plan creation device according to the second embodiment of the present invention. As shown in FIG. 5, the river facility operation plan creation device 20 according to the second embodiment is for displaying the outer water level prediction means 2, the operation plan proposal input means 4, the inner water level prediction means 6, and the inner water level. And a display means 8. Further, the river facility operation plan creation device 20 uses the inner water level prediction means 6 to create a plurality of optimal operation plan proposals for the river facility based on the dynamic programming method, and an operation plan. The operation plan proposal presenting means 24 for presenting the operation plan proposal generated by the proposal generating means 22 to the operator A.

The operation plan proposal generating means 22 can be composed of a computer, a hard disk, a computer program for operating the hard disk, and the like.
The operation plan presentation means 24 can be configured by a computer display, a printer, or the like.

Next, with reference to FIG. 6, the operation of the river facility operation plan creating apparatus according to the second embodiment of the present invention will be described. Similar to the first embodiment, the operation will be described here by taking the case where the river facility operation plan creation device according to the second embodiment is applied to the river facility shown in FIG. 2 as an example. FIG. 6 is a flowchart showing the operation of the second embodiment of the present invention. First, in step S21, the outside water level prediction means 2
The outside water level after a predetermined time is calculated.

Next, in step S22, a plurality of operation plans are generated by the operation plan generation means 22. First, a predetermined time after which the operation plan of the river facility should be created is divided into a plurality of time intervals. For example, when creating an operation plan up to 1 hour later, one tick time can be set to 10 minutes. Next, an operation pattern of a river facility such as a floodgate or a pump plant is arbitrarily given for one tick time, and the inner water level predicting unit 6 calculates the inner water levels L1, L3, and L4 after one tick time. The procedure for calculating the inner water levels L1, L3, and L4 from the operation pattern of the river facility and the outer water level is the same as step S3 in the first embodiment, and thus the description thereof is omitted.

The inner water levels L1, L3, L4 and the operation pattern thus obtained after one time interval are evaluated by an evaluation function. For example, an evaluation function as shown in (Formula 5) can be used. Where J: evaluation function value, E1 _i : water level risk of river facility i at time t, E2 _i : control stability of river facility i at time t, W1 _i : weight related to water level risk of river facility i, W2 _i is a weight regarding the control stability of the river facility i.

E1 _i and E2 _i are given by (Equation 6) and (Equation 7). However, L _i (t): the water level of the river facility i at time t, Hh _i: upper limit water level of rivers facility _i, Hm i: intermediate water level of the rivers facility i (stable level of risk 0), Hl _i: River facility The lower limit water level of i, N _ik (t): Number of operating river facilities i at time t (1 for open gate, 0 for closed gate).

Therefore, the water level risk level E1 _i is
_{The value of i} (t) increases as the distance from the intermediate water level Hm _i , which is the least dangerous, increases, and the control stability E2 _i increases as the number of times each pump is operated / stopped and the number of times the water gate is opened / closed increases. growing. That is, the internal water levels L1, L3, and L4 are safe water levels, and the smaller the number of times each pump is operated / stopped and the number of times the water gate is opened / closed, the smaller the evaluation function value J, and the more desirable operation of the river facility. Further, the water level risk level E1 _i may be set such that the risk level is minimum at the water level 0 and the risk level increases as the water level increases.

When the calculation result of the internal water level or the like is obtained for one tick time, the calculation result is used as an initial value and the next tick time is calculated using a new operation pattern of the river facility. By repeating such calculation, the internal water level after a predetermined time is calculated, and a desirable operation plan of the river facility is generated. In general, creating the most desirable operation plan requires a huge amount of calculation to apply all the operation patterns of the river facility for each step time. In the present embodiment, the operation plan generation means 22
However, since the dynamic programming method, which is one of the optimization methods, is used, it is possible to efficiently obtain the optimum operation plan.

In step S23, step S2
The optimal operation plan proposals generated in 2 are displayed by the operation plan presenting means 24. In step S24, the operation plan input means 4 inputs the operation plan. The operator A refers to the operation plan proposal presented in step S23, and considers information that is not taken into consideration by the operation plan proposal generation unit 22, such as the operator's own experience, the operation status of other river facilities, and the failure of the river facilities. Then, an operation plan is prepared, and the operation plan input means 4 inputs it. In the case where one of the operation plans presented by the operation plan presenting means 24 is adopted as it is, the operator A may only select the presented operation plan.

In step S25, the internal water levels L1, L3, L4 are calculated based on the input operation plan,
In step S26, the display means 8 displays the inner water levels L1, L3, and L4. Steps S25 and S2
Since step 6 is the same as steps S3 and S4 in the first embodiment, a description thereof will be omitted.

In the river facility operation plan creating apparatus according to the second embodiment of the present invention, a plurality of operation plan proposals are presented by the operation plan proposal presenting means, so that the operator can quickly create an appropriate operation plan. You can

Next, with reference to FIG. 7, a river facility operation plan creating apparatus according to a third embodiment of the present invention will be described. Third
The river facility operation plan creating apparatus according to the embodiment is that the operation plan created by the river facility operation plan creating apparatus is compared with the actual change in the internal water level and the operation plan is re-established. The form is different. Therefore, only the points different from the second embodiment of the present invention will be described, and description of the same points will be omitted.

FIG. 7 is a block diagram of a river facility operation plan creating apparatus according to the third embodiment of the present invention. As shown in FIG. 7, the river facility operation plan creation device 30 according to the third embodiment includes an outside water level prediction means 2 and an operation plan proposal input means 4.
An inner water level prediction means 6, a display means 8 for displaying the inner water level, an operation plan proposal generating means 22, and an operation plan proposal for presenting the operation plan proposal generated by the operation plan proposal generating means 22 to the operator A. And a presenting unit 24. Further, the river facility operation plan creation device 30 needs to change the operation plan when a predetermined deviation occurs between the operation plan being executed and the actual inner water level, and when the river facility fails or the like. In some cases, it has an operation plan modification means 32 for modifying the operation plan. Specifically, the operation plan modifying means 32 is configured by a receiving means for capturing the actual inner water level, the outer water level, and the operation status of the river facility, a computer, software for operating the computer, and the like. You can

Next, the operation of the river facility operation plan creation device 30 according to the third embodiment of the present invention will be described. The operation of the river facility operation plan creation device 30 according to the third embodiment is the second operation.
Similar to the embodiment, first, the operation plan of the river facility is created, and the operator A executes the operation plan. Third
In the embodiment, the operation plan modification unit 32 monitors each inner water level and outer water level. As a result of the monitoring, when there is a deviation of a predetermined threshold value or more between the actual water level and the inner water level or the outer water level predicted in the operation plan being executed, the operation plan modifying means 32, With the actual water level as the initial value, the subsequent operation plan is generated again. Operation plan modification means 3
The procedure for generating the operation plan according to No. 2 is step S22 of the second embodiment except that the actual water level is used as the initial value.
Since it is the same as, the description will be omitted.

The operation plan modifying means 32 monitors the operation status of the river facility. As a result of the monitoring, when a situation in which the operation plan cannot be executed, such as a failure of the water gate opening / closing mechanism or a failure of the pump, the operation plan modification unit 32 regenerates an executable operation plan proposal. Operation plan modification means 3
The operation plan generation procedure according to 2 is the same as step S22 of the second embodiment except that the operation pattern of the inexecutable river facility is excluded in the generation of the operation plan, and thus the description thereof will be omitted.

The operation plan proposal generated by the operation plan modification means 32 is presented to the operator A by the operation plan proposal presentation means 24. The operator A creates an operation plan for the river facility with reference to the proposed operation plan.

According to the third embodiment of the present invention, the outside water level,
Even if an error occurs in the predicted value of the internal water level or a trouble occurs in the river facility, it is possible to create an appropriate operation plan for the river facility.

Next, with reference to FIG. 8, a river facility operation plan creating apparatus according to a fourth embodiment of the present invention will be described. Fourth
The river facility operation plan creation device according to the embodiment is a combination of a plurality of river facility operation plan creation devices according to the first embodiment. Therefore, only the points different from the first embodiment of the present invention will be described, and description of the same points will be omitted. The configuration of the river facility operation plan creation device according to the fourth embodiment of the present invention is the same as that of the first embodiment, so description thereof will be omitted.

Next, the operation of the fourth embodiment of the present invention will be described. Here, the operation of the river facility operation plan creation device according to the fourth embodiment will be described as an example in which it is used to create the operation plan of the river facility provided in the river and discharge channel shown in FIG. River B1, B3, B4, discharge channel B shown in FIG.
2, the sluices G1 to G3, and the pump plant P are the same as those in FIG. 2, and the water level at each point is also given the same reference numeral as in FIG. Further, in FIG. 8, a discharge channel B5 is provided upstream of the sluice gate G1 of the tributary B4, and the other end of the discharge channel is connected to the tributary B6. A sluice G4 and a pump plant P2 are provided between the tributary B4 and the discharge channel B5, and a sluice G5 is provided between the discharge channel B5 and the tributary B6. In addition, the inner water level near the sluice gate G4 of the tributary B4 is L10,
The inner water level of the discharge channel B5 is L11, the inner water level of the tributary river B6 near the floodgate G5 is L13, and the outer water level upstream of the tributary river B6 is L1.
4. The water level near the downstream estuary is L12.

In the river facility operation plan creation device according to the fourth embodiment, the outside water level L2, L is determined by the outside water level predicting means.
The procedure for predicting 5, L6, L7, L8, and L9 is the same as step S1 (FIG. 3) in the first embodiment. In addition, based on these predicted external water levels and the operation plans of the river facilities G1 to G3 and the pump plant P input by the operator A, the internal water levels L1, L3, and L4 are calculated using a physical model. The procedure for the prediction is also the same as step S3 (FIG. 3) of the first embodiment, and therefore the description is omitted.

Next, the prediction of the outer water levels L12, L14 and the inner water levels L10, L11, L13 will be described. First, the outside water level prediction means uses (Equation 1) to calculate the outside water levels L12 and L14 as in the first embodiment. Next, the operator uses the operation plan input means to input the operation plans of the water gates G4 and G5 and the pump plant P2.

Next, the inner water level predicting means uses the inner water level L10,
Predict L11 and L13. In this prediction calculation, the previously predicted inner water level L3 is the inner water levels L10, L11, L
Used as external water level for 13. As for the internal water level L11 of the discharge channel B5, L1 of (Equation 2) is set to L11 and A1 is set to A
11, Q _G1 to Q _G5 , Q _G2 to 0, Q _G3 to Q _G4 , Q
It can be calculated using an equation in which _P is replaced by Q _P2 . Also, the water level L10 near the sluice gate G4 on the tributary B4
In the formula 3, L3 is set to L10, A3 is set to A10, and Q is set.
_L6 to Q _L3, the Q _G1 can be calculated using the respective replacement expression to the Q _G4. Furthermore, for the water level L13 near the water gate G5 of the tributary B6, L3 of (Equation 3) is set to L13, and A3 is set.
To A13, _QL8 to _QL14 , _QL6 to _QL12 , and Q _G1 to Q
It can be calculated using the formulas replaced with _G4 .

The internal water level L10 calculated in this way,
L11, L13 and the previously calculated inner water levels L1, L
3, L4 are displayed by the display means. The operator re-creates the operation plan of each river facility based on these predicted values of the internal water level, and repeats the above operation to create an appropriate operation plan of the river facility.

According to the river facility operation plan creating apparatus of the fourth embodiment of the present invention, an appropriate operation plan can be quickly created even when many river facilities influence each other.

As a modification, in the fourth embodiment of the present invention,
It is possible to add a function of automatically generating an operation plan proposal as in the second embodiment and presenting it. Further, a function of modifying the operating plan being executed, like the third embodiment, can be added to the fourth embodiment.

Furthermore, in the second embodiment, the third embodiment, and the embodiment in which those functions are added to the fourth embodiment of the present invention, the river facility operation planning apparatus uses the dynamic programming method. The operation plans to be generated and presented are configured so as to be narrowed down to one optimal operation plan, and the river facility operation means for executing the narrowed down operation plan is provided to automatically drive each river facility. It is possible to configure a river facility automatic operation device that can do so.

Although the preferred embodiments of the present invention have been described above, various modifications can be made to the above-described embodiments. In particular, the river facility for which an operation plan is to be created is not limited to a floodgate and a pump plant, and the present invention can be applied to any river facility that affects the internal water level.

[0075]

According to the river facility operation plan creating apparatus of the present invention, the predicted value of the water level can be quickly obtained even at the point where the operation of the artificially operated river facility affects the water level.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a river facility operation plan creation device according to a first embodiment of the present invention.

FIG. 2 is an example of a river facility to which the river facility operation plan creation device according to the first embodiment of the present invention is applied.

FIG. 3 is a flowchart showing an operation of the river facility operation plan creation device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing water level calculation of a discharge channel in the river facility operation plan creation device according to the first embodiment of the present invention.

FIG. 5 is a block configuration diagram of a river facility operation plan creation device according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of the river facility operation plan creation device according to the second embodiment of the present invention.

FIG. 7 is a block configuration diagram of a river facility operation plan creation device according to a third embodiment of the present invention.

FIG. 8 is an example of a river facility to which a river facility operation plan creation device according to a fourth embodiment of the present invention is applied.

[Explanation of symbols]

A operator B Main river, tributary or spillway G lock L water level P pump plant 1 River facility operation plan creation device 2 Outside water level prediction means 4 Operation plan input means 6 Inner water level prediction means 8 display means 10 Recording means 22 Operation plan creation means 24 Operation plan presentation means 32 Operation plan modification means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keiichiro Nagata             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Masataka Yanagita             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Atsushi Tani             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Inventor Yoshinori Kaima             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Works, Mitsubishi Heavy Industries, Ltd. (72) Inventor Katsuyoshi Maemoto             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Works, Mitsubishi Heavy Industries, Ltd. (72) Inventor Yasushi Morishita             2-1-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture             Takasago Works, Mitsubishi Heavy Industries, Ltd. F-term (reference) 5H004 GA16 GB08 HA05 HB05 JB08                       KA03 KA12 KA15 KC08 KC23                       KC24 KC27

Claims (8)

[Claims] 1. Based on rainfall data from the past to the present and water level data of the river from the past to the present, a predetermined time at a point which is not substantially affected by the operation of the river facility including a floodgate, a pump plant, etc. External water level prediction means for predicting the external water level after, an operation plan proposal input means for inputting an operation plan of the river facility, an external water level predicted by the external water level prediction means, and
Internal water level prediction for predicting the internal water level after a predetermined time at a point affected by the operation of the river facility based on each data including the operation plan of the river facility input by the operation plan input means A river facility operation plan creation device comprising: a means and a display means for displaying the inner water level predicted by the inner water level prediction means. 2. The external water level predicting means is a mathematical formula. However, L (t + 1): outside water level after a predetermined time, L (t-i): water level data of river from past to present, R (t-j): rainfall data from past to present, a _i , b _The external water level is predicted by _j and c ₀ : constants.
The described river facility operation plan creation device. 3. The inner water level predicting means uses a physical model to determine the water level upstream of the point where the inner water level should be predicted, the downstream water level, and the opening of the sluice adjacent to the point where the inner water level should be predicted.
The river facility operation plan according to claim 1 or 2, wherein the inner water level is predicted based on the water levels on both sides of the lock and the amount of drainage by a pump adjacent to the point where the inner water level should be predicted. Creation device. 4. A recording means for recording the operation results of a plurality of pumps provided in the pump plant, wherein the operation plan proposal input means includes the operation plan proposal of the inputted river facility, and the recording section. 4. Which of the plurality of pumps is to be operated is selected on the basis of the operation record recorded in FIG.
The river facility operation plan creation device described in any one of 1. 5. An operation plan proposal generating means for preparing an operation plan proposal for the river facility by using a dynamic programming method based on the external water level predicted by the external water level prediction means, and the operation plan proposal preparing means. 5. An operation plan proposal presenting means for displaying the operation plan prepared by the above, further comprising:
The river facility operation plan creation device described in any one of 1. 6. An operation plan proposal when a predetermined deviation occurs between the predicted value of the inner water level by the inner water level prediction means and the actual inner water level, and when it is necessary to change the operation plan. 6. The river facility operation plan creation device according to claim 5, further comprising operation plan modification means for modifying the operation plan. 7. A plurality of said river facility operation plan creation devices are provided, and the value of the outside water level of one of said river facility operation plan creation devices is the predicted value of the inner water level by another of said river facility operation plan creation devices. The river facility operation plan creation device according to any one of claims 1 to 6, which is provided by: 8. Based on rainfall data from past to present and water level data of river from past to present, a predetermined time at a point which is not substantially affected by the operation of the river facility including a floodgate, a pump plant, etc. An external water level predicting means for predicting the external water level after, and an operation plan of the river facility are arbitrarily generated, and based on the generated operation plan and the external water level predicted by the external water level predicting means. The internal water level of the point affected by the operation of the river facility after a predetermined time, and based on the predicted internal water level, the optimal operation plan of the river facility is calculated using dynamic programming. And a river facility operation means for operating the river facility on the basis of the optimum operation plan created by the operation plan generation means. Driving device.