JP2020118005A - Flow rate management device - Google Patents

Abstract

To secure a maintenance flow rate in a river on the downstream side of a dam.SOLUTION: A flow rate management device 300 is provided on the upstream side of a river 100 of a dam 101 provided with a weir bank crossing the river 100, acquires information on a power generation amount by hydraulic power generation facilities 102 and 103 which discharge water used in power generation to the river 100, and calculates an estimation value of an intake amount to a second hydraulic power generation facility 104 provided on the downstream side of the river 100 of the hydraulic power generation facilities 102 and 103 based on the acquired information on the power generation amount by the hydraulic power generation facilities 102 and 103.SELECTED DRAWING: Figure 1

Description

The present invention relates to a flow rate control device that controls a maintenance flow rate of a river.

Conventionally, there has been a technique for ensuring a maintenance flow rate in a river downstream of a dam by adjusting the amount of water used for power generation by a hydroelectric power generation facility attached to the dam according to the change in the water level of the dam. The amount of water intake used for power generation by the hydroelectric power generation facility can be adjusted by adjusting the opening of the intake gate according to changes in the water level of the dam.

As a related technique, specifically, conventionally, for example, the first power generation facility that uses the water of the upstream water storage facility to generate electricity and the water that is discharged from the upstream water storage facility are taken from a river. In a connected water system that includes a second power generation facility that uses water from a water storage facility on the downstream side that stores water, and if it is predicted that the amount of water stored in one of the water storage facilities will exceed the upper limit, use it for power generation. The first discharge not used for power generation is calculated so that the amount of water stored in one of the water storage facilities is less than or equal to the upper limit with the second amount of discharge being set to the maximum amount of water, and is stored in the upstream and downstream water storage facilities. If the amount of stored water in one of the water storage facilities calculated based on the predicted value of the amount of water flowing into the specified period does not fall within the upper and lower limits, the specified period is divided into the first period and the second period. Operational support for a connected water system in which the second discharge in the two periods is a regulated water amount that is greater than or equal to the maximum water amount per unit time that maximizes power generation efficiency using water from one water storage facility There was a technology related to the system (for example, refer to Patent Document 1 below).

Further, as a related technique, specifically, conventionally, for example, a plurality of water intakes for introducing water flowing through a river are connected to a water intake for introducing water to a hydroelectric power plant, and the water is installed at each intake. In the intake gate automatic control system that controls the opening of the intake gate to adjust the water level of the headrace, the dam water level detected by the dam water level gauge installed at the intake of the dam and the water level detected by the intake gate opening meter The opening of the intake gate is controlled so that the intake amount calculated based on the intake gate opening and the intake target opening amount becomes the first target intake amount, and other intakes are detected by the water level gauge. Automatic control of the intake gate so that the opening of the intake gate is controlled so that the difference between the flow rate obtained from the water level of the headrace and the calculated intake amount at the intake of the dam is the second target intake amount. There was a technology related to the system (for example, see Patent Document 2 below).

Japanese Patent No. 6330982 JP, 2010-275825, A

However, since it takes time to adjust the opening degree of the intake gate, as described above, the conventional technique of adjusting the opening degree of the intake gate according to the change in the water level of the dam, for example, flows into the dam. If the amount of water or the amount of water flowing out from the dam changes abruptly, the adjustment of the opening of the intake gate cannot follow the change in the amount of water, and there is the problem that it is difficult to secure a maintenance flow rate in the river downstream from the dam. It was

Specifically, for example, if the amount of water that flows into the dam increases rapidly due to the operation of a hydroelectric power generation facility that is installed upstream of the dam than the dam, the opening of the intake gate must be adjusted. There was a problem that it was not possible to follow the change in water volume, and ineffective discharge such as overflow occurred that was not used for effective use such as power generation, and the flow rate in the river downstream of the dam exceeded the maintenance flow rate. ..

In addition, specifically, for example, when the amount of water flowing into the dam decreases sharply, the adjustment of the opening of the intake gate cannot follow the change in the amount of water, and the water level of the dam decreases to the lower limit water level. However, there was a problem that the flow rate in the river downstream from the dam was less than the maintenance flow rate.

Such a problem with the conventional technology that adjusts the opening of the intake gate according to the change of the water level of the dam is caused by the fact that the water storage capacity of the dam is small or the hydroelectric power generation equipment is installed relatively close to the dam. It is likely to occur remarkably when

Further, in the conventional technique described in Patent Document 1 described above, the first discharge amount that is not used for power generation is the power generation within a range in which the storage amount of water in a plurality of dams installed in one river does not exceed the upper limit. It can be adjusted so that it is larger than the optimum amount of water per unit time at which the efficiency is maximized and less than or equal to the maximum amount of water, but there is a problem that it is difficult to secure a maintenance flow rate downstream of the dam in the river.

Further, although the conventional technique described in Patent Document 2 described above can prevent hunting of the water level of the water channel when water is introduced from a plurality of intakes to the water channel, it is provided on the downstream side of the dam in the river. There was a problem that it was difficult to secure the maintenance flow rate.

Further, the conventional techniques including the above-mentioned Patent Documents 1 and 2 do not consider the water storage capacity of the dam, and in particular, in a dam with a small water storage capacity, ensure a maintenance flow rate on the downstream side of the river than the dam. Had the problem of being difficult.

An object of the present invention is to provide a flow rate control device capable of ensuring a maintenance flow rate in a river on the downstream side of a dam in order to solve the above-mentioned problems of the conventional technique.

In order to solve the above-mentioned problems and achieve the object, a flow rate control device according to the present invention is provided on the upstream side of a river including a dam having a dam that crosses the river, and uses the water used for power generation. Based on the acquisition unit that acquires information about the amount of power generated by the first hydraulic power generation facility that is discharged into the river, and the information about the amount of power generated by the first hydraulic power generation facility that is acquired by the acquisition unit, And a calculation unit that calculates an estimated value of the amount of water taken into the second hydraulic power generation facility that is provided on the downstream side of the river with respect to the hydraulic power generation facility.

Further, in the flow rate control device according to the present invention, in the above invention, the calculating means converts the amount of power generated by the first hydraulic power generation facility into the amount of water used for power generation by the first hydraulic power generation facility, and converts the amount. An estimated value of the amount of water taken into the second hydraulic power generation facility is calculated based on the amount of water used.

Further, in the flow rate management device according to the present invention, in the above invention, the acquisition unit acquires information about the water level of the dam, and the calculation unit further relates to the water level of the dam acquired by the acquisition unit. Based on information, the water level of the dam after adding the converted amount of water used is within a range not exceeding a predetermined upper limit water level and not falling below a predetermined lower limit water level, and the amount of water intake to the second hydraulic power generation facility. It is characterized in that an estimated value of is calculated.

Further, in the flow rate control device according to the present invention, in the above invention, the calculating unit is configured to connect the dam and the second hydraulic power generation facility based on an estimated value of the amount of water intake to the second hydraulic power generation facility. It is characterized in that the opening degree of the intake gate provided at the intake that communicates with each other is calculated.

Further, in the flow rate management device according to the present invention, in the above invention, the acquisition unit acquires information about an empty capacity of a water conduit connecting the intake port and a generator provided in the second hydraulic power generation facility. The calculation means further calculates an estimated value of the amount of water intake to the second hydraulic power generation facility based on the information on the free capacity of the water conduit acquired by the acquisition means.

Further, in the flow rate control device according to the present invention, in the above-mentioned invention, the amount of power generated by the first hydraulic power generation facility in which the acquisition means is provided upstream of the dam and within a predetermined range from the dam. It is characterized by acquiring information about.

Further, in the flow rate management device according to the present invention, in the above invention, the acquisition unit acquires information regarding the amount of power generated by the plurality of first hydraulic power generation facilities, and the calculation unit includes a plurality of the first hydropower generation facilities. It is characterized in that an estimated value of the amount of water taken into the second hydraulic power generation facility is calculated based on the amount of power generated by the hydraulic power generation facility.

Further, in the flow rate control device according to the present invention, in the above invention, the calculating means is based on a total value of power generation amounts by the plurality of first hydroelectric power generation facilities, and the water intake amount to the second hydroelectric power generation facilities. It is characterized in that an estimated value of is calculated.

Further, the flow rate control device according to the present invention is based on the above invention, based on the estimated value of the amount of water intake to the second hydraulic power generation facility or the information about the opening degree of the intake gate calculated by the calculating means. And a control means for adjusting the opening of the intake gate.

Further, the flow rate management device according to the present invention, in the above-mentioned invention, outputs the estimated value of the amount of water intake to the second hydraulic power generation facility or the information about the opening degree of the intake gate calculated by the calculating means. It is characterized by comprising an output means for performing.

According to the flow rate control device of the present invention, it is possible to ensure the maintenance flow rate in the river on the downstream side of the dam.

It is explanatory drawing which shows the outline|summary of the equipment environment used as the application object of the flow volume control apparatus of embodiment concerning this invention. It is explanatory drawing which shows the hardware constitutions of a control apparatus. It is a block diagram showing functional composition of a flow control device of an embodiment concerning this invention. It is a flow chart which shows a processing procedure of a flow control device of an embodiment concerning this invention. It is a block diagram which shows the functional structure of the flow control apparatus of another embodiment concerning this invention.

Hereinafter, preferred embodiments of a flow rate control device according to the present invention will be described in detail with reference to the accompanying drawings.

(Outline of facility environment)
First, an outline of a facility environment to which the flow rate management device according to the embodiment of the present invention is applied will be described. FIG. 1 is an explanatory diagram showing an outline of an equipment environment to which a flow rate management device according to an embodiment of the present invention is applied.

In FIG. 1, the flow rate control device according to the embodiment of the present invention manages the water level of the dam 101, and thus is used to secure the maintenance flow rate in the river 100 ′ downstream of the dam 101 in the river 100. It The dam 101 includes a dam that crosses the river 100. A water level measuring device (see reference numeral 310 in FIG. 3) for measuring the water level of the dam 101 is installed in the dam 101.

The water level measuring device of the dam 101 outputs the information regarding the measured water level of the dam 101 to an external device such as a hydraulic power generation facility A described later. The water level measuring device of the dam 101 may constantly output the information regarding the measured water level of the dam 101, or may output it at predetermined time intervals such as "every 5 minutes" or "every 10 minutes".

The dam 101 stores the water flowing into the dam 101 from the upstream side of the river or stores the water stored in the dam 101 from the dam 101 based on the information about the water level of the dam 101 measured by the water level measuring device of the dam 101. Is also discharged to the downstream side of the river to secure a maintenance flow rate on the downstream side of the river with respect to the dam 101 and stabilize the flow rate. By securing the maintenance flow rate on the downstream side of the river with respect to the dam 101, it is possible to protect the fishery, flora and fauna, water volume, landscape, water usage, and the like.

In this embodiment, the dam 101 is realized by a structure having no embankment function, which is provided across the river to control the flowing water of the river, which is referred to as an “intake weir” or the like. It may be one. The intake weir can store water by blocking the river and increasing the water level on the upstream side of the river relative to the intake weir. When the water level of the dam 101 reaches the height of the dam, the dam 101 realized by the intake weir discharges water by overflowing the water of the dam 101 from the upper end (top end) of the dam to the downstream side of the river.

Hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river with respect to the dam 101. The hydroelectric power generation facilities 102 and 103 generate electric power using the water taken from the river 100 and discharge the water used for the electric power generation to the river 100. The hydroelectric power generation equipment provided on the upstream side of the river 100 is not limited to the hydroelectric power generation equipment 102 that generates electric power by using the water taken from the river 100 flowing into the dam 101, and the hydroelectric power generation equipment 103 like the dam. The power may be generated using water from a water source other than the river 100 flowing into the river 101. In this embodiment, the first hydraulic power generation facility according to the present invention can be realized by the hydraulic power generation facilities 102 and 103 provided on the upstream side of the river 100 with respect to the dam 101.

Each of the hydroelectric power generation facilities 102 and 103 includes a water intake facility, a water transfer facility, an electrical facility, etc. (all are not shown). The water intake facility takes in water used for power generation from a water source such as the river 100. Specifically, the water intake facility has a water intake opening toward a water source such as the river 100, and takes in water used for power generation through the water intake. At the water intake, a water intake gate for adjusting the amount of water taken into the hydroelectric power generation facilities 102 and 103 is provided.

The water transfer facility transfers the water taken by the water intake facility to the electrical equipment. The electric equipment is equipped with a penstock, a turbine, and a generator. The water turbine and the generator are installed in the buildings of the hydroelectric power generation facilities 102 and 103. The electric equipment rotates the water turbine by the energy obtained by the drop when flowing down the hydraulic pressure pipeline, and converts the rotational energy of the water turbine into electricity in the generator to generate electricity (hydraulic power generation). The hydroelectric power generation facilities 102 and 103 output the electricity generated by power generation to a power transmission facility (not shown), and discharge the water that has passed through the water turbine to the river 100. The water discharged from the hydroelectric power generation facilities 102 and 103 to the river 100 flows into the dam 101.

The hydroelectric power generation facilities 102 and 103 are equipped with a measurement unit (see reference numeral 311 in FIG. 3) that measures the amount of power generated by the hydroelectric power generation facilities 102 and 103. When the hydraulic power generation facilities 102 and 103 include a plurality of generators, the amount of power generated by the hydraulic power generation facilities 102 and 103 may be, for example, the total value of the amount of power generation measured for each generator. The method of measuring the amount of power generation by the hydroelectric power generation facilities 102 and 103 can be easily realized by using various known techniques, and therefore description thereof will be omitted. The unit time can be set to an arbitrary length of time, such as 5 minutes or 10 minutes. The unit time may be set to 0 minutes and the power generation amount of the generator may be constantly measured.

A hydraulic power generation facility 104 is provided on the downstream side of the river 100 with respect to the hydraulic power generation facilities 102 and 103. The hydroelectric power generation facility 104 is provided near the dam 101 and uses the water stored in the dam 101 to generate power. When the water storage capacity of the dam 101 is small, the presence or absence of water intake to the hydroelectric power generation facility 104 directly affects the water level of the dam 101.

That is, when the water storage capacity of the dam 101 is small, the water level of the dam 101 is lowered by water intake to the hydroelectric power generation facility 104, and the water intake to the hydroelectric power generation facility 104 is stopped. The water level of 101 can be raised. In this embodiment, the hydraulic power generation facility 104 can realize the second hydraulic power generation facility according to the present invention.

The hydroelectric power generation facility 104 is installed in a hydroelectric power plant, and is provided with a water intake facility, a water guiding facility, an electrical facility, etc. (all are not shown). The water intake facility is provided in the dam 101 and has an intake port for taking in water used for power generation. The water intake of the hydroelectric power generation facility 104 is provided at a position indicated by reference numeral 105 in FIG.

An intake gate is provided at the intake. The intake gate is provided with a door body that can reciprocate vertically. The door body is equipped with sliding plates on both sides, and when the sliding plates are brought into contact with the door stop to transfer the load applied to the door body to the door stop through the sliding plates, the vertical direction Reciprocate to. The door body is provided with a watertight member made of rubber or the like for ensuring watertightness between the door and the doorstop.

The opening of the intake gate can be adjusted by moving the door up and down. The opening degree of the intake gate can be represented by, for example, the position of the door body with respect to the fully open position where the door body opens the intake port to the maximum extent. Alternatively, the opening of the intake gate shall be expressed by the area where the intake water is open to the opening area of the intake that is the largest opened by positioning the door at the fully open position. You can Specifically, for example, when the door body is positioned at a position that closes 70% of the intake opening in the state in which it is opened the most by positioning the door body at the fully open position, the opening degree of the intake gate is 30%. Becomes

The headrace facility is equipped with a headrace and a penstock. The water transfer facility stabilizes the amount of water in the water transfer channel that communicates between the intake port and the generator included in the hydroelectric power generation facility 104, and then drains the water to the water turbine provided in the electric device via the hydraulic conduit. The water conduit may be a pressure water conduit that introduces water taken into the water conduit under pressure, or may be a non-pressure water conduit that naturally flows without applying pressure. The headrace can temporarily store water that cannot be stored in the dam 101, which is used for power generation in the hydraulic power generation facility 104.

The water transfer facility is equipped with a water level measuring device (not shown) that measures the water level in the water conduit. The water level measuring device of the headrace outputs information about the measured water level of the headrace to the control device of the hydroelectric power generation facility 104. The water level measuring device of the headrace may constantly output the information regarding the measured water level of the headrace, or may output it every predetermined time such as "every 5 minutes" or "every 10 minutes".

The electric equipment is equipped with a penstock, a turbine, and a generator. Turbines and generators are installed inside the hydropower station. The electric equipment rotates the water turbine by the energy obtained by the drop when flowing down the hydraulic pressure pipeline, and converts the rotational energy of the water turbine into electricity in the generator to generate electricity. Electricity generated by power generation is output to power transmission equipment (not shown). The water that has passed through the water turbine is discharged to the river 100 ′ on the downstream side of the hydroelectric power generation facility 104 via a discharge channel (not shown).

A control device (see FIG. 2) is provided inside the building of the hydroelectric power generation facility 104. The control device, for example, based on the information about the water level of the dam 101 measured by the water level measuring device, performs various controls related to the operation and stop of the operation of the electric equipment, and similarly to the above-described measurement unit, the control device of the generator. It measures the amount of power generation.

Further, the control device controls the vertical movement of the door body of the intake gate to adjust the opening degree of the intake gate. Specifically, the control device adjusts the opening degree of the intake gate by outputting an opening/closing control signal for moving the door body up and down to a motor that controls the vertical movement of the door body at the intake gate. ..

The control device further calculates an estimated value of the amount of water taken into the hydraulic power generation facility 104 based on the information on the amount of power generated by the hydraulic power generation facilities 102 and 103. Then, the opening degree of the intake gate is adjusted based on the calculated estimated value of the intake amount. In this embodiment, the flow control device according to the present invention can be realized by the control device.

(Hardware configuration of control device)
Next, the hardware configuration of the control device will be described. FIG. 2 is an explanatory diagram showing the hardware configuration of the control device. In FIG. 2, the control device 200 includes a CPU (Central Processing Unit) 201, a memory 202, and a communication I/F (Interface) 203. The respective units 201 to 203 included in the control device 200 are connected by a bus 210.

The CPU 201 controls the entire control device 200. The CPU 201 drives and controls each unit included in the control device 200 by executing the control program stored in the memory 202. The memory 202 can be realized by a ROM, a RAM, and the like, and stores various control programs including, for example, a flow rate management program used for controlling the amount of water intake to the hydroelectric power generation facility 104.

The memory 202 also stores various data used for executing various programs. Specifically, the memory 202 stores, for example, power generation amount measurement data. The power generation amount measurement data stored in the memory 202 includes information on the effective head of each of the hydroelectric power generation facilities 102 and 103. The effective head is represented by a value obtained by subtracting a loss head due to friction in a water channel or a penstock from a head difference between the discharge surface and the intake water surface in each of the hydroelectric power generation facilities 102 and 103.

The loss head due to friction in a water channel or a penstock is specifically expressed by, for example, a water channel loss head, a water tube loss head, a water outlet loss head, or the like. Instead of or in addition to the effective head, the power generation amount measurement data includes the head difference between the discharge surface and the intake water surface of each hydroelectric power generation facility 102, 103, the water channel loss head due to the water channel gradient, the penstock loss head, and the water outlet Information such as loss head may be included.

Further, specifically, the memory 202 stores, for example, information regarding the arrival time of each of the hydroelectric power generation facilities 102 and 103. The arrival time indicates the time until the water used for power generation by each of the hydroelectric power generation facilities 102 and 103 reaches the dam 101. Further, specifically, the memory 202 stores information about the upper limit water level of the dam 101 and the full water level of the headrace. The power generation amount measurement data, the arrival time of each of the hydroelectric power generation facilities 102 and 103, the information about the upper limit water level of the dam 101, and the full water level of the headrace are stored in the memory 202 in advance by the administrator of the control device 200, for example.

The communication I/F 203 controls data input/output with an external device. The CPU 201 communicates with, for example, the hydroelectric power generation facilities 102 and 103 via the communication I/F 203, and acquires data regarding the amount of power generated by the hydroelectric power generation facilities 102 and 103. Further, the CPU 201 communicates with, for example, the water level measuring device of the dam 101 or the water level measuring device of the headrace via the communication I/F 203, and acquires information regarding the water level output from each water level measuring device. ..

The control device 200 may further include a display driven by the CPU 201, an input operation unit, a speaker, and the like. The display 102 is drive-controlled by the CPU 201 and displays various screens. The display 102 can be realized by various known displays such as a liquid crystal display and an organic EL (Electro-Luminescence) display.

The input operation unit receives an input operation performed by a worker and outputs a signal corresponding to the received input operation to the CPU 201. Specifically, the input operation unit can be realized by a keyboard, a numeric keypad, a pointing device such as a mouse, a touch panel, or the like.

The speaker is drive-controlled by the CPU 201, performs digital/analog conversion on digital audio data output from the CPU 201, and outputs audio by energizing a coil in the speaker cone based on the analog audio data. The speaker outputs, for example, an alarm sound.

(Functional configuration of flow control device)
Next, a functional configuration of the flow rate control device according to the embodiment of the present invention will be described. FIG. 3 is a block diagram showing a functional configuration of the flow rate control device according to the embodiment of the present invention.

In FIG. 3, the function of the flow rate management device 300 can be realized by the storage unit 301, the acquisition unit 302, the calculation unit 303, and the control unit 304. The storage unit 301 stores the above power generation amount measurement data. The storage unit 301 also stores information about the arrival time of each of the hydroelectric power generation facilities 102 and 103. In this embodiment, for example, the storage unit 301 can be realized by the memory 202 included in the control device 200 that realizes the flow rate management device 300 of the embodiment according to the present invention.

The acquisition unit 302 acquires information about the water level of the dam 101. In this embodiment, for example, the acquisition unit 302 according to the present invention is realized by the CPU 201, the memory 202, and the communication I/F 203 included in the control device 200 that realizes the flow rate management device 300 according to the embodiment of the present invention. be able to. The acquisition unit 302 acquires information about the water level of the dam 101 by communicating with the water level meter of the dam 101 and receiving information indicating the measurement result of the water level meter of the dam 101, for example.

Further, the acquisition unit 302 acquires information regarding the free capacity of the water conduit. Specifically, for example, the acquisition unit 302 communicates with the water level measuring device of the headrace, and obtains information indicating the water level of the headrace, which is the measurement result of the water level measuring device of the headrace, from the free capacity of the headrace. Received as information about. Since the water level in the headrace is predetermined, the free capacity of the headrace can be calculated based on the difference between the water level in the headrace and the water level in the headrace (current water level in the headrace).

The acquisition unit 302 also acquires information regarding the amount of power generated by the hydroelectric power generation facilities 102 and 103. The acquisition unit 302 communicates with, for example, the measurement units of the hydroelectric power generation facilities 102 and 103, and receives information indicating the amount of power generation measured by the measurement units, thereby obtaining the amount of power generation by the hydroelectric power generation facilities 102 and 103. Get information.

When the hydroelectric power generation equipments 102 and 103 including a plurality of generators are provided on the upstream side of the river 100 with respect to the dam 101 and within a predetermined range from the dam 101, the acquisition unit 302 determines that the hydroelectric power generation equipment 102, Information on the amount of power generated by each of the hydroelectric power generation facilities 102 and 103 is acquired for each 103. The power generation amount of the hydroelectric power generation facilities 102 and 103 including a plurality of power generators can be represented by, for example, the total value of the power generation amounts measured for each power generator as described above.

The calculation unit 303 calculates an estimated value of the amount of water taken into the hydroelectric power generation facility 104 based on the information about the amount of power generation by the hydroelectric power generation facilities 102 and 103 acquired by the acquisition unit 302. In this embodiment, for example, the calculation unit 303 according to the present invention can be realized by the CPU 201 and the memory 202 included in the control device 200 that realizes the flow rate management device 300 according to the embodiment of the present invention.

The estimated value of the amount of water taken into the hydroelectric power generation facility 104 is such that in the situation where the amount of water used for power generation by the first hydroelectric power generation facility (the amount of water used) reaches the dam 101, the amount of ineffective discharge from the dam 101 is minimized. In order to do so, the predicted value of the amount of water to be taken into the hydroelectric power generation facility 104 before the amount of water used reaches the dam 101 is shown.

The calculation unit 303 converts the amount of power generated by the hydroelectric power generation facilities 102 and 103 into the amount of water used for power generation by the hydroelectric power generation facilities 102 and 103, and estimates the amount of water intake to the hydroelectric power generation facility 104 based on the converted amount of used water. Calculate the value. The amount of power generation (effective output) P [kW] by the hydroelectric power generation facilities 102 and 103 is determined by the flow rate of water (the amount of water used) Q [m ³ /s] and the effective head H that flow into the water turbine and are used for power generation. It is proportional to the product of [m]. Since the value of the effective head is fixed, it is possible to calculate the amount of water used for each of the hydroelectric power generation facilities 102 and 103 based on the amount of power generated by the hydroelectric power generation facilities 102 and 103.

When the numerical value obtained by the calculation based on the amount of water used exceeds the water intake capacity of the hydroelectric power generation facility 104, the calculation unit 303 sets the amount of water equal to or less than the water intake capacity of the hydroelectric power generation facility 104 to the estimated value of the water intake to the hydroelectric power generation facility 104. Calculate as The calculation unit 303 regards the total value of the amount of power generated by each generator for the hydraulic power generation facilities 102 and 103 including a plurality of generators as the amount of power generated by the hydraulic power generation facilities 102 and 103, and the amount of water taken into the hydraulic power generation facility 104. It may be calculated as an estimated value of.

The calculation unit 303 calculates an estimated value of the amount of water taken into the hydroelectric power generation facility 104, which sets the water level of the dam 101 after adding the converted amount of used water within a range not exceeding a predetermined upper limit water level and not falling below a predetermined lower limit water level. calculate. Specifically, the calculation unit 303, when the converted amount of water used reaches the dam 101 based on, for example, the power generation capacity and the water intake capacity of the hydroelectric power generation facility 104, the current operation status, or the operation plan, the invalid discharge is performed. The estimated value of the amount of water taken into the hydroelectric power generation facility 104 is calculated so that

The calculation unit 303 may further calculate the opening degree of the intake gate in the hydroelectric power generation facility 104. In this case, the calculation unit 303, based on the estimated value of the amount of water taken into the hydroelectric power generation facility 104, determines the area, at the intake, where the taken water is open so that the taken water can pass, and the amount of water corresponding to the estimated value is taken. Calculate the opening of the intake gate to make the area possible.

The control unit 304 adjusts the opening degree of the intake gate based on the information regarding the opening degree of the intake gate calculated by the calculating unit 303. Specifically, with respect to the motor that controls the vertical movement of the door body at the intake gate, the door is adjusted so that the position of the door body corresponds to the opening of the intake gate calculated by the calculation unit 303. It outputs an opening/closing control signal that moves the body up and down. In this embodiment, for example, the control unit 304 according to the present invention is realized by the CPU 201, the memory 202, and the communication I/F 203 included in the control device 200 that realizes the flow rate management device 300 according to the embodiment of the present invention. be able to.

The control unit 304 may adjust the opening degree of the intake gate based on the estimated value of the intake amount to the hydraulic power generation facility 104 instead of the information about the opening degree of the intake gate. Specifically, for example, the water level of the dam 101 and the water level of the headrace are measured, and the opening degree of the intake gate is adjusted so as to take in an amount corresponding to the estimated value of the amount of water taken into the hydroelectric power generation facility 104. You may do it.

(Processing Procedure of Flow Rate Management Device 300)
Next, a processing procedure of the flow rate control device 300 according to the embodiment of the present invention will be described. FIG. 4 is a flowchart showing a processing procedure of the flow rate management device 300 according to the embodiment of the present invention.

In the flowchart of FIG. 4, first, it is determined whether or not the hydroelectric power generation facilities 102 and 103 on the upstream side of the river 100 with respect to the dam 101 are in operation (step S401). In step S401, it is determined whether or not the hydroelectric power generation facilities 102 and 103 provided on the upstream side of the river 100 relative to the dam 101 and within a predetermined range from the dam 101 are in operation. When a plurality of hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river 100 relative to the dam 101 and within a predetermined range from the dam 101, in step S401, among the hydroelectric power generation facilities 102 and 103, Then, it is determined whether or not at least one of the hydroelectric power generation facilities 102 and 103 is in operation.

Further, in the case where the hydroelectric power generation facilities 102 and 103 having a plurality of generators are provided on the upstream side of the river 100 with respect to the dam 101 and within a predetermined range from the dam 101, in step S401, the hydroelectric power generation is performed. It is determined whether at least one of the plurality of generators in the facilities 102 and 103 is in operation. In this case, when all the generators provided in the hydroelectric power generation facilities 102 and 103 have stopped generating electric power, it transfers to step S402.

When a plurality of hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river 100 with respect to the dam 101 and within a predetermined range from the dam 101, in step S401, all of the hydroelectric power generation facilities 102 and 103 are provided. May determine whether or not power generation is stopped. In this case, when all of the plurality of hydraulic power generation facilities 102 and 103 have stopped generating power, the process proceeds to step S402.

In step S401, when the hydroelectric power generation facilities 102 and 103 are not in operation, that is, when the hydroelectric power generation facilities 102 and 103 are not operating (step S401: No), the hydroelectric power generation facilities 102 and 103 start operating. Waits until (step S402: No). When a plurality of hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river 100 relative to the dam 101 and within a predetermined range from the dam 101, in step S402, among the hydroelectric power generation facilities 102 and 103, , It is determined whether or not at least one of the hydroelectric power generation facilities has started operation.

If the hydroelectric power generation equipment 102, 103 is operating in step S401 (step S401: Yes), or if the hydroelectric power generation equipment 102, 103 has started operation in step S402 (step S402: Yes), the water level of the dam 101. , The amount of power generation of the hydroelectric power generation facilities 102 and 103 on the upstream side of the river 100 relative to the dam 101, and the water level of the headrace are acquired (step S403).

In step S403, for example, by communicating with a water level measuring device installed in the dam 101 and receiving information indicating the measurement result by the water level measuring device, the information regarding the water level of the dam 101 is acquired. The flow rate management device 300 is not limited to the device that directly communicates with the water level measuring device in step S403, but can communicate with a computer device that is capable of acquiring the measurement result of the water level measuring device and has a communication function, thereby dam 101. The information about the water level of

Further, in step S403, for example, the hydraulic power generation equipment 102, 103 determined to be operating in step S401: Yes, or the hydraulic power generation equipment 102, 103 determined to have started operation in step S402: Yes. Get information about the amount of power generation. When a plurality of hydraulic power generation facilities 102 and 103 are provided on the upstream side of the river 100 with respect to the dam 101 and within a predetermined range from the dam 101, in step S403, among the plurality of hydraulic power generation facilities 102 and 103. , And communicates with all of the operating hydroelectric power generation facilities 102 and 103 to obtain information regarding the amount of power generated by the hydroelectric power generation facilities 102 and 103.

Further, in step S403, for example, the hydraulic power generation equipment 102, 103 determined to be operating in step S401: Yes, or the hydraulic power generation equipment 102, 103 determined to have started operation in step S402: Yes. In, when a plurality of power generators are in operation, a value obtained by summing the power generation amounts of the plurality of power generators is acquired as information regarding the power generation amounts of the hydroelectric power generation facilities 102 and 103.

Further, in step S403, for example, the information about the water level of the headrace is acquired by acquiring the measurement result of the water level measuring device of the headrace installed in the headrace. The water level of the headrace may be represented by the water depth from the bottom surface of the headrace, or may be represented by the distance dimension from the lower end position of the intake gate to the water surface in the headrace.

Next, based on the power generation amounts of the hydroelectric power generation facilities 102 and 103 on the upstream side of the river 100 relative to the dam 101, the water level of the dam 101, and the water level of the headrace, which are acquired in step S403, the amount of water taken into the hydropower generation facility 104. The estimated value of is calculated (step S404). In step S404, for example, the amount of water used for power generation by the hydroelectric power generation facilities 102, 103 is calculated based on the amount of power generated by the hydroelectric power generation facilities 102, 103 on the upstream side of the river 100 with respect to the dam 101. Is calculated as an estimated value of the amount of water intake to the hydroelectric power generation facility 104.

In step S404, based on the calculated amount of water used and the water level of the dam 101 (current water level) acquired in step S403, when the amount of water used flows into the dam 101, invalidity from the dam 101 It is also possible to judge whether or not the water will be discharged, and calculate the estimated value of the amount of water taken into the hydroelectric power generation facility 104 based on the judgment result.

When determining whether or not an invalid discharge will occur, the upper limit of the water level of the dam 101 is based on the water level (current water level) of the dam 101 and the upper limit water level of the dam 101 preset as the water level at which the invalid discharge will occur. The amount of received water that the dam 101 can receive before reaching the water level is calculated. Then, the magnitude relation between the calculated amount of received water and the amount of used water is compared, and it is determined that ineffective discharge does not occur when the amount of received water is larger than the amount of used water. Note that the upper limit water level is not limited to the water level at which truly ineffective discharge occurs, but may be a water level with a margin lower than the water level at which truly ineffective discharge occurs.

When it is determined that the ineffective discharge from the dam 101 will occur, a predicted value of the amount of ineffective discharge of water is calculated. The predicted value of the amount of water discharged ineffectively can be represented by the difference between the amount of water used and the amount of water received. In step S404, the difference between the amount of water used and the amount of water received, that is, the amount of water that is discharged ineffectively may be calculated as an estimated value of the amount of water taken into the hydroelectric power generation facility 104.

When a plurality of hydroelectric power generation equipments 102 and 103 are provided on the upstream side of the river 100 with respect to the dam 101 and within a predetermined range from the dam 101, in step S404, the hydroelectric power generation equipments 102 and 103 in operation are provided. Even if the amount of water used for each of the hydroelectric power generation facilities 102 and 103 is calculated based on the amount of power generated by, and the difference between the sum of the calculated amounts of water used and the amount of received water is calculated as the predicted value of the amount of water to be discharged ineffectively. Good.

The estimated value of the amount of water taken into the hydroelectric power generation facility 104 may be a value obtained by multiplying the amount of water used by the hydroelectric power generation facilities 102 and 103 or the amount of water that is discharged ineffective by a predetermined coefficient. In this case, the predetermined coefficient is a numerical value larger than 1. Thus, by taking the amount of water corresponding to the estimated value of the amount of water taken into the hydroelectric power generation facility 104, the water level of the dam 101 after water intake can be reliably made lower than the upper limit water level.

When a plurality of hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river 100 relative to the dam 101 and within a predetermined range from the dam 101, in step S404, each hydroelectric power generation facility 102 in operation. , 103 may be used to calculate the total amount of power generation, and the amount of water used for power generation by the plurality of hydraulic power generation facilities 102, 103 may be calculated based on the calculated total value. In this case, for example, the average value of the effective heads of the respective hydroelectric power generation facilities 102 and 103 may be used as information regarding the effective head to calculate the estimated value of the amount of water taken into the hydroelectric power generation facility 104.

Next, the opening degree of the intake gate is calculated based on the estimated value of the amount of water intake to the hydroelectric power generation facility 104 calculated in step S404 (step S405). In step S405, the opening degree of the water intake gate that opens the water intake until the amount of water corresponding to the estimated value of the amount of water intake to the hydraulic power generation facility 104 calculated in step S404 can be taken is calculated.

Then, based on the opening degree of the intake gate calculated in step S405, opening and closing for positioning the door body at the calculated opening degree of the intake gate with respect to the motor for controlling the vertical movement of the door body at the intake gate. An instruction signal is output (step S406). After that, the process proceeds to step S401, and it is determined whether or not the hydroelectric power generation facilities 102 and 103 on the upstream side of the river 100 with respect to the dam 101 are operating. Thereby, while the hydroelectric power generation facilities 102 and 103 are operating, the opening degree of the intake gate can be adjusted according to the amount of water used for power generation by the hydroelectric power generation facilities 102 and 103 in operation.

In the above-described embodiment, the flow rate management device 300 that controls the opening degree of the intake gate based on the calculation result by the calculation unit 303 has been described, but the opening degree of the intake gate is determined by the flow rate management device 300. Is not limited to those that directly adjust. For example, as shown in FIG. 5, the calculation result by the calculation unit 303 may be output to an external device and utilized in the external device.

FIG. 5 is a block diagram showing a functional configuration of a flow rate management device 300 according to another embodiment of the present invention. In the description of another embodiment, the same parts as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 5, the functions of the flow rate management device 300 according to another embodiment of the present invention can be realized by the storage unit 301, the acquisition unit 302, the calculation unit 303, and the output unit 501.

The output unit 501 outputs the estimated value of the amount of water intake to the hydroelectric power generation facility 104 or the information about the opening degree of the intake gate 502, which is calculated by the calculation unit 303. The output unit 501 is, for example, a computer device that drives and controls the operation of the intake gate 502 when the flow rate management device 300 is realized by a server computer or the like provided at a remote location of the hydroelectric power generation facility 104. In response to this, the estimated value of the amount of water taken into the hydroelectric power generation facility 104 or the information regarding the opening degree of the water intake gate 502 is output.

In this case, the computer device that drives and controls the operation of the intake gate 502 drives and controls the intake gate 502 based on the information received from the flow rate management device 300. Specifically, with respect to the motor that controls the vertical movement of the door body at the intake gate 502, the door is adjusted so that the position of the door body corresponds to the opening degree of the intake gate 502 calculated by the calculation unit 303. It outputs an opening/closing control signal that moves the body up and down.

As described above, the flow rate control device 300 according to the embodiment of the present invention is provided on the upstream side of the river 100 with respect to the dam 101 including the dam that crosses the river 100, and uses the water used for power generation. Based on the acquisition unit 302 that acquires information on the amount of power generation by the hydroelectric power generation facilities 102 and 103 discharged to the river 100, and the information on the amount of power generation by the hydroelectric power generation facilities 102 and 103 acquired by the acquisition unit 302, The calculation unit 303 is provided downstream of the power generation facilities 102 and 103 on the downstream side of the river 100 and calculates an estimated value of the amount of water taken into the second hydraulic power generation facility 104.

According to the flow rate management device 300 of the embodiment according to the present invention, in the environment where a plurality of hydroelectric power generation facilities are provided in the same river 100, the hydroelectric power generation facilities 102 and 103 provided upstream of the river 100 are used. By calculating an estimated value of the amount of water withdrawn to the second hydraulic power generation facility 104 provided on the downstream side of the river 100 from the hydraulic power generation facilities 102 and 103 based on the amount of power generation (effective output), the hydraulic power generation facility Before the water used for power generation by 102 and 103 reaches the dam 101, it is possible to predict the fluctuation of the water level of the dam 101 and adjust the water intake amount to the second hydraulic power generation facility 104.

As a result, the water level of the dam 101 can be adjusted earlier than the case of adjusting the water level of the dam 101 based on the measured value of the water level of the dam 101, and the water used for power generation by the hydroelectric power generation facilities 102, 103 can be adjusted. Even if the inflow of the dam 101 fluctuates due to the inflow of water or the inflow of the hydroelectric power generation equipment 102, 103 due to the stoppage of the operation of the hydropower generation facilities 102 and 103, the water level of the dam 101 is suppressed by suppressing a large fluctuation of the water level of the dam 101. It can be maintained properly.

As described above, according to the flow rate control device 300 of the embodiment according to the present invention, by maintaining the water level of the dam 101 appropriately, it is possible to secure the maintenance flow rate on the downstream side of the river 100 with respect to the dam 101. .. In particular, in the dam 101 having a small amount of stored water, it is possible to secure the maintenance flow rate on the downstream side of the river 100 with respect to the dam 101.

In Japan, there are many environments in which a plurality of small-scale power generation facilities are installed in the same river 100 in which a dam 101 is installed. Hydroelectric power generation can stably supply a certain amount of electric power while considering the natural environment. Therefore, it is expected that it will spread widely in the future with the recent promotion of the use of renewable energy. On the other hand, the amount of renewable energy that uses natural energy varies depending on the time, time, weather, etc., so when connecting to an existing power system, consider the balance between electricity demand and supply as appropriate. However, it will be necessary to generate or stop generating electricity.

The flow control device 300 according to the embodiment of the present invention can be applied to an environment in which a plurality of small-scale power generation facilities are installed in the same river 100 in which such a dam 101 is installed. It is possible to secure the maintenance flow rate on the downstream side of the river 100 than 101. As a result, it is possible to contribute to the spread of hydroelectric power generation that can consider the natural environment.

Further, in the flow rate control device 300 according to the embodiment of the present invention, the calculation unit 303 converts the amount of power generated by the hydroelectric power generation facilities 102 and 103 into the amount of water used for power generation by the hydraulic power generation facilities 102 and 103, and converts the amount of water used. It is characterized in that an estimated value of the amount of water taken into the second hydraulic power generation facility 104 is calculated based on the amount of water used.

According to the flow rate management device 300 of the embodiment according to the present invention, the power generation amount (effective output) of the hydropower generation facilities 102 and 103 that accurately reflects the amount of water used for power generation is generated by the hydropower generation facilities 102 and 103. The water used for power generation by the hydroelectric power generation facilities 102, 103 reaches the dam 101 before the water used for power generation by the hydroelectric power generation facilities 102, 103 reaches the dam 101 By doing so, it is possible to highly accurately predict the fluctuation of the water level of the dam 101.

As a result, when the water used for power generation by the hydroelectric power generation facilities 102 and 103 reaches the dam 101, the adjustment of the opening of the intake gate cannot follow the fluctuation of the water level of the dam 101 and the water level of the dam 101 reaches the upper limit water level. Above or below the lower limit water level due to too much water intake to the second hydraulic power generation facility 104, and the water level of the dam 101 can be appropriately maintained.

Further, in the flow rate management device 300 according to the embodiment of the present invention, the acquisition unit 302 acquires information about the water level of the dam 101, and the calculation unit 303 further acquires information about the water level of the dam 101 acquired by the acquisition unit. Based on the above, the water level of the dam 101 after adding the converted amount of water used is within a range not exceeding a predetermined upper limit water level and not falling below a predetermined lower limit water level, and estimating the amount of water intake to the second hydraulic power generation facility 104. It is characterized by calculating a value.

According to the flow rate control device 300 of the embodiment according to the present invention, the usage is converted by taking water according to the estimated value of the amount of water taken into the second hydroelectric power generation facility 104 calculated in consideration of the water level of the dam 101. The water level of the dam 101 after adding the water amounts can be set within a range that does not exceed the predetermined upper limit water level and does not fall below the predetermined lower limit water level.

As a result, the water level of the dam 101 can be adjusted earlier than the case of adjusting the water level of the dam 101 based on the measured value of the water level of the dam 101, and fluctuations in the water level of the dam 101 can change the opening of the intake gate. It is possible to prevent the dam 101 from being unable to follow the adjustment, causing the dam 101 water level to exceed the upper limit water level to cause an invalid discharge, or to fall below the lower limit water level to cause an insufficient maintenance flow rate in the river 100 ′ downstream of the dam 101. The water level of can be maintained properly.

Further, since it is possible to allow the estimated value of the amount of water intake to have a margin and to control the water intake to the second hydraulic power generation facility 104 with the margin, the water intake at the second hydraulic power generation facility 104 can be performed. It is possible to reduce the burden on the operator who is involved in such control and to maintain the water level of the dam 101 appropriately.

Further, in the flow rate control device 300 according to the embodiment of the present invention, the calculation unit 303 uses the dam 101 and the second hydraulic power generation facility 104 based on the estimated value of the amount of water intake to the second hydraulic power generation facility 104. The feature is that the opening degree of the intake gate provided at the intake communicating with and is calculated.

According to the flow rate management device 300 of the embodiment according to the present invention, the intake gate can be controlled according to the opening degree calculated based on the estimated value of the amount of water intake to the second hydraulic power generation facility 104. As a result, the calculation result can be directly used for controlling the intake gate, so that it is possible to reduce the burden on the operator who is involved in the control related to water intake in the second hydroelectric power generation facility 104, and to properly adjust the water level of the dam 101. Can be maintained.

Further, in the flow rate management device 300 according to the embodiment of the present invention, the acquisition unit 302 acquires information about the free capacity of the water conduit that connects the intake port and the generator included in the second hydraulic power generation facility 104, The calculating unit 303 is further characterized by calculating an estimated value of the amount of water intake to the second hydraulic power generation facility 104, based on the information on the free capacity of the water conduit acquired by the acquisition means.

According to the flow rate management device 300 of the embodiment according to the present invention, the second hydraulic power generation facility is added by taking into account the amount of water used for power generation by the second hydraulic power generation facility 104 and the empty capacity of the headrace channel immediately. An estimate of the amount of water withdrawn to 104 can be calculated. As a result, the estimated value of the amount of water taken into the second hydraulic power generation facility 104 can be calculated with a margin, and the burden on the operator involved in the control related to the water intake in the second hydraulic power generation facility 104 can be reduced. Therefore, the water level of the dam 101 can be appropriately maintained.

Further, in the flow rate control device 300 according to the embodiment of the present invention, the acquisition unit 302 has the amount of power generated by the hydraulic power generation facilities 102 and 103 provided upstream of the dam 101 and within a predetermined range from the dam 101. It is characterized by acquiring information about.

According to the flow rate control device 300 of the embodiment according to the present invention, since it is provided within the predetermined range from the dam 101, the hydroelectric power generation facilities 102, 103 that greatly affect the fluctuation of the water level of the dam 101 due to the power generation. The fluctuation of the water level of the dam 101 can be predicted in consideration of the amount of water used for the power generation according to the above, and the estimated value of the amount of water intake to the second hydroelectric power generation facility 104 can be calculated.

Then, the amount of water taken into the second hydraulic power generation facility 104 is adjusted according to a prediction that takes into consideration the amount of water used for power generation by the hydraulic power generation facilities 102 and 103, which greatly affects the fluctuation of the water level of the dam 101 due to the power generation. By adjusting the water level of the dam 101, the water level of the dam 101 can be reliably maintained properly.

Particularly, according to the flow rate control device 300 of the embodiment according to the present invention, the hydroelectric power generation facilities 102 and 103 are provided at positions close to the upstream side, and the river 100 is generated along with the power generation by the hydroelectric power generation facilities 102 and 103. In the dam 101 that is easily affected by the discharged water and has a small amount of stored water, the water level of the dam 101 can be appropriately maintained. As a result, the maintenance flow rate on the downstream side of the river 100 with respect to the dam 101 can be secured.

Further, in the flow rate management device 300 according to the embodiment of the present invention, the acquisition unit 302 acquires information regarding the amount of power generated by the plurality of hydraulic power generation facilities 102 and 103, and the calculation unit 303 causes the plurality of hydraulic power generation facilities 102, It is characterized in that an estimated value of the amount of water taken into the second hydraulic power generation facility 104 is calculated based on the amount of power generated by 103.

According to the flow rate management device 300 of the embodiment according to the present invention, in an environment where a plurality of hydroelectric power generation facilities 102 and 103 are provided on the upstream side of the river 100 with respect to the dam 101, the hydroelectric power generation facilities 102 and 103 are respectively provided. Even when the power is generated separately, the estimated value of the amount of water taken into the second hydraulic power generation facility 104 is calculated based on the amount of power generation (effective output) by the plurality of hydraulic power generation facilities 102 and 103 that generated the power. Thus, before the water used for power generation by the plurality of hydraulic power generation facilities 102 and 103 reaches the dam 101, the fluctuation of the water level of the dam 101 is predicted and the water intake amount to the second hydraulic power generation facility 104 is adjusted. be able to.

As a result, the water level of the dam 101 can be adjusted earlier than the case of adjusting the water level of the dam 101 based on the measured value of the water level of the dam 101, and fluctuations in the water level of the dam 101 can change the opening of the intake gate. It is possible to prevent the dam 101 water level from exceeding the upper limit water level or falling below the lower limit water level without being able to follow the adjustment, and to appropriately maintain the water level of the dam 101.

Further, in the flow rate management device 300 according to the embodiment of the present invention, the calculation unit 303 calculates the amount of water taken into the second hydraulic power generation facility 104 based on the total value of the amounts of power generated by the plurality of hydraulic power generation facilities 102 and 103. The feature is that an estimated value is calculated.

According to the flow rate management device 300 of the embodiment according to the present invention, it is possible to calculate the estimated value of the amount of water intake to the second hydraulic power generation facility 104, regardless of the number of the hydraulic power generation facilities 102 and 103. Thereby, before the water used for power generation by the hydroelectric power generation facilities 102 and 103 reaches the dam 101, the fluctuation of the water level of the dam 101 is predicted and the water intake amount to the second hydroelectric power generation facility 104 is adjusted. You can

Further, the flow rate management device 300 according to the embodiment of the present invention is based on the estimated value of the amount of water intake to the second hydraulic power generation facility 104 or the information about the opening degree of the intake gate calculated by the calculation unit 303. A control unit 304 for adjusting the opening degree of the intake gate is provided. According to the flow rate management device 300 of the embodiment according to the present invention, it is possible to adjust the opening degree of the intake gate to adjust the amount of water intake to the second hydraulic power generation facility 104.

Further, in the flow rate management device of the embodiment according to the present invention, the estimated value of the amount of water intake to the second hydraulic power generation facility 104 or the information about the opening degree of the intake gate calculated by the calculation unit 303 is output. The output unit 501 may be provided.

According to such a flow rate management device 300, the flow rate management device 300 can be realized by a computer device different from the control device 200 that controls the intake gate. Thereby, the estimated value of the amount of water intake to the second hydraulic power generation facility 104 or the opening of the intake gate, which is required to control the opening of the plurality of intake gates, can be calculated by the single flow management device 300. Therefore, it is possible to simplify the operation management of the system related to the maintenance and management of the water level of the dam 101. Specifically, the number of computer devices to be monitored can be reduced to reduce the burden on the operator regarding the management of the soundness of the network connection and the security measures.

The flow rate management method described in this embodiment can be realized by executing a flow rate management program prepared in advance on a computer such as a personal computer or a workstation. The flow rate management program is recorded in a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, or a DVD, and is executed by being read from the recording medium by the computer. The flow rate management program may be a transmission medium that can be distributed via a network such as the Internet.

INDUSTRIAL APPLICABILITY As described above, the flow rate control device according to the present invention is useful as a flow rate control device that controls the maintenance flow rate of a river, and particularly, the flow rate control that controls the maintenance flow rate on the downstream side of a river with respect to a dam having a small water storage capacity. Suitable for equipment.

100 rivers 100' rivers downstream of the dam 101 dams 102-104 hydroelectric power generation facilities

Claims (10)

An acquisition unit that is provided on the upstream side of the river that has a dam that crosses the river and that acquires information about the amount of power generated by the first hydroelectric power generation facility that discharges the water used for power generation to the river,
Based on the information about the amount of power generated by the first hydroelectric power generation equipment acquired by the acquisition means, the second hydroelectric power generation equipment provided on the downstream side of the river with respect to the first hydroelectric power generation equipment. Calculating means for calculating an estimated value of water intake,
A flow rate control device comprising: The calculation means converts the amount of power generated by the first hydraulic power generation facility into the amount of water used for power generation by the first hydraulic power generation facility, and based on the converted amount of used water, The flow rate control device according to claim 1, wherein an estimated value of the amount of water intake is calculated. The calculation means sets the water level of the dam after the addition of the converted amount of water used to a range that does not exceed a predetermined upper limit water level and does not fall below a predetermined lower limit water level, and the amount of water intake to the second hydraulic power generation facility. The flow rate control device according to claim 2, wherein an estimated value of is calculated. The calculating means calculates the opening degree of an intake gate provided at an intake communicating with the dam and the second hydraulic power generation facility based on the estimated value of the amount of water intake to the second hydraulic power generation facility. The flow rate control device according to claim 1, wherein the flow rate control device is calculated. The acquisition unit acquires information about an empty capacity of a water conduit connecting the water intake port and a generator provided in the second hydraulic power generation facility,
The calculation means calculates the amount of water taken in by the first hydraulic power generation equipment, the water level of the dam, and the empty capacity of the headrace, which is acquired by the acquisition means, to the second hydraulic power generation equipment. The flow rate control device according to claim 4, wherein an estimated value of the amount of water intake is calculated. The said acquisition means acquires the information regarding the electric power generation amount by the said 1st hydroelectric power generation equipment provided in the upstream of the said dam and within the predetermined range from the said dam, The 1st characterized by the above-mentioned. The flow rate control device described in any one. The acquisition means acquires information regarding the amount of power generated by the plurality of first hydraulic power generation facilities,
7. The calculation unit calculates an estimated value of the amount of water taken into the second hydraulic power generation facility based on the amount of power generated by a plurality of the first hydraulic power generation facilities. The flow management device described in one. The said calculation means calculates the estimated value of the water intake to the said 2nd hydroelectric power generation equipment based on the total value of the electric power generation amount of the some said 1st hydroelectric power generation equipment. Flow control device. A control unit for adjusting the opening of the intake gate based on the estimated value of the amount of water intake to the second hydraulic power generation facility or the information on the opening of the intake gate calculated by the calculating unit; The flow rate control device according to claim 1, wherein the flow rate control device is a flow control device. The output means which outputs the estimated value of the water intake to the said 2nd hydraulic power generation facility or the information regarding the opening degree of the said water intake gate calculated by the said calculation means was provided. The flow rate control device described in any one of 1.

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