JP2019173338A - Control device and system for water flow management - Google Patents

Abstract

To provide a control device and a system for water flow management which can be easily applied to an existing control device through simple control and allows effective utilization of water as maintaining a quantity of water intake at a level lower or equal to a maximum permitted quantity.SOLUTION: A closing operation part 24 of a water intake gate performs closing operation on a water intake gate to decrease a water level of an intake channel 13 below or equal to a maximum control water level HWL when the water level is above or equal to the maximum control water level HWL. A first opening operation part 25 of the water intake gate performs opening operation on the water intake gate to keep a water level between the maximum control water level HWL and a middle upper control water level HS when the water level of a channel is below or equal to a lowest control water level LWL, a second opening operation part 26 of the water intake gate performs opening operation on the water intake gate to keep the water level between the maximum control water level HWL and the middle upper control water level HS when the water level of the water channel is in a rage between the middle upper control water level HS and a middle lower control water level LS; and a third opening operation part 27 of the water intake gate performs opening operation on the water intake gate to keep the water level between the middle upper control water level HS and the middle lower control water level LS when the water level of the water channel is in a rage between the middle lower control water level LS and the lowest control water level LWL.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water amount management control apparatus and system for adjusting and controlling the opening of a water intake gate from a water source so that the water intake amount to a water utilization facility via a water channel does not exceed an authorized maximum value.

  In the water utilization facility, management control of the amount of water intake is performed. For example, the management control of the amount of water used at a hydroelectric power plant, the amount of water used at a factory and the amount of water discharged from a water storage facility is managed and controlled so as not to exceed the authorized maximum value. In the following description, the case of a hydroelectric power generation facility will be described as a water utilization facility in which management control of water intake is performed.

  In hydroelectric power generation facilities, a maximum value is set for the amount of water taken from a river, which is a water source, and it is required to take water so that the maximum value is not exceeded. Therefore, the water intake at the hydroelectric power generation facility must be operated below the approved maximum value.

  Therefore, in the hydroelectric power generation facility, the control water level upper limit value HWL and the control water level lower limit value LWL are provided, and the water level WL is maintained between the control water level upper limit value HWL and the control water level lower limit value LWL. It is operated so that it is below the authorized maximum value and water resources can be used as effectively as possible.

  The control water level upper limit value HWL indicates the water intake level of the approved maximum value in the water use facility in terms of the water level. By maintaining the water level WL in the water channel below the control water level upper limit value HWL, the water intake amount to the water use facility Is maintained below the authorized maximum. That is, the control water level upper limit value HWL is the water level of the discharge channel that maintains the water intake amount below the authorized maximum value.

  On the other hand, the control water level lower limit value LWL is a water level for preventing the water flow rate from being below when the river flow rate is greater than or equal to the authorized water intake amount in order to make effective use of water, and ensures the water intake amount that can be effectively used by the hydroelectric power generation facility. It is the water level of the canal.

  FIG. 6 is a block diagram showing an example of a hydroelectric power generation facility, FIG. 6 (a) is a schematic longitudinal sectional view showing a case where water is taken from a water source into a water channel, and FIG. It is a schematic longitudinal cross-sectional view which shows the case where it is time.

  As shown in FIG. 6A, a river that is a water source is provided with a weir 11, and in normal times the river water is taken into the water channel 13 through the intake gate 12 without flowing over the weir 11. The water taken into the water channel 13 is led to a water wheel (not shown) to drive a water turbine generator to generate power. Adjustment of the water intake amount to the water channel 13 is performed by controlling the opening degree of the water intake gate 12 with the water amount control device 14 and the hoisting machine operation panel 15. That is, the water amount control device 14 inputs the water level WL of the water channel 13 detected by the water level gauge 16, and drives and controls the hoisting machine 17 so that the water intake amount to the water channel 13 does not exceed the authorized maximum value. Adjust the opening. On the other hand, even at the time of water increase, the water amount control device 14 controls the opening of the water intake gate 12 so that the water intake amount to the water channel 13 does not exceed the authorized maximum value, as in the normal time. Therefore, when the water increases, the river water may overflow the weir 11 as shown in FIG.

  FIG. 7 is an explanatory diagram of the control content of the water intake amount adjustment to the water channel 13 performed by the conventional water amount control device 14. The intake amount adjustment to the intake channel 13 is performed by adjusting the water level WL of the intake channel 13. As shown in FIG. 7, the water level WL of the water channel 13 is adjusted to a range (water level control width WLD) between the control water level upper limit value HWL and the control water level lower limit value LWL.

  When the water level WL of the water channel 13 becomes equal to or higher than the control water level upper limit value HWL, the water level WL is within the water level width (water level control width WLD) between the control water level upper limit value HWL and the control water level lower limit value LWL. The intake gate 12 is closed for the water level lowering control time Td with the unit operation amount α (m / min) of the hoisting machine 17 so as to lower. In this case, the intake gate closing operation opening degree Od is Od = α · Td.

  On the other hand, when the water level WL of the water channel 13 becomes equal to or lower than the control water level lower limit LWL, the unit operation amount α (m / min) of the hoisting machine 17 is set so that the water level WL of the water channel 13 returns to the water level control width WLD. Then, the intake gate 12 is opened for the water level raising control time Tu. The intake gate opening operation opening degree Ou in this case is Ou = α · Tu.

  The water level lowering control time Td is longer than the water level raising control time Tu. This is to make the water level WL of the water channel 13 quickly fall below the control water level upper limit water level, to act slowly in the raising direction, and to perform adjustment control so as not to exceed the control water level upper limit value HWL. Because.

  FIG. 8 is a graph of a water channel level and a weir water level adjusted by a conventional water amount control device, FIG. 8 (a) is a graph of a water channel level, and FIG. 8 (b) is a graph of a weir water level. FIG. 8A shows a case where the water amount control device controls the water level WL of the water channel 13 at a predetermined control cycle (for example, every 7 minutes).

  8A, the broken line C1 indicates the water level WL of the water channel 13, and the broken line C2 indicates the opening degree of the intake gate 12. In FIG. 8B, the broken line C2 indicates the opening of the intake gate 12, and the curve C3 indicates the weir water level. The weir water level of 0.00 is the top of the weir 11, and when it exceeds 0.00, the water overflows the weir 11. In FIG. 8B, the dam water level in a portion exceeding 0.00 is shown, but the dam water level in this portion shows the overflow rate of the weir 11.

  8A and 8B, before the time point t1, the water level WL of the water channel 13 is equal to or lower than the control water level lower limit LWL, so that the opening of the intake gate 12 is greatly opened as indicated by the broken line C2. ing. Accordingly, water flows from the river that is the water source through the intake gate 12 to the water channel 13 and the water level WL of the water channel 13 is rising.

  Then, when the water level WL of the water channel 13 becomes equal to or higher than the control water level upper limit value HWL at the time point t2, the control water level upper limit is exceeded even if there is abundant river flow (water source) and water overflows the weir 11 as shown by the curve C3. The intake gate 12 is closed so as not to exceed the value HWL. Therefore, as shown by the broken line C2, the opening of the water intake gate 12 is closed at a predetermined time interval and becomes smaller. When the water level WL of the water channel 13 becomes equal to or lower than the control water level upper limit value HWL at time t3, the closing operation of the water intake gate 12 is stopped, so that the opening of the water intake gate 12 is held at a small opening at time t3. Since the opening of the intake gate 12 after time t3 is a small opening, as shown by the curve C3, even if there is abundant river self-current (water source) and water is overflowing the weir, less water flows into the water channel 13 Thus, the water level WL of the water channel 13 is lowered as indicated by the broken line C1.

  When the water level WL of the water channel 13 becomes equal to or lower than the control water level lower limit LWL at the time t4, the intake gate 12 is opened, so that the opening of the intake gate 12 is opened at a predetermined control cycle as indicated by the broken line C2. The water level WL of the water channel 13 also decreases with the same tendency as the decrease of the curve C3, that is, the weir overflow water level, since the control water level upper limit value HWL and the control water level lower limit value LWL are between the control dead zone. And if it is more than control water level lower limit LWL, the water level of waterway 13 will change in the neighborhood, and it will be in the state where effective use of water resources cannot be performed.

  Therefore, in order to make effective use of water resources while maintaining the intake amount below the approved maximum value, the intake amount of the water utilization facility for taking water through the intake channel is adjusted by further adjusting the opening of the intake gate 12. In some cases, control is performed so that the average water level of the intake channel in a predetermined time range matches the ideal water level (see, for example, Patent Document 1).

  This divides a predetermined time range into a previous time zone and a later time zone divided by a predetermined division ratio, and in the previous time zone, the water level of the intake channel is continuously stored and the actual water level of the intake channel is determined. In order to match the ideal water level, adjustment control of the opening of the intake gate is executed, and in the later time zone, the average water level in the entire predetermined time range is ideal based on the average water level of the actual intake channel in the previous time zone. In order to match the water level, the average water level that should be given as the average water level in the later time zone is derived and set as the target average water level, and the intake gate opening is set so that the actual water level of the intake channel matches the target average water level The adjustment control is executed.

Japanese Patent No. 5976507

  However, the one in Patent Document 1 is an improvement from the existing method of giving a constant operation amount to the method of giving an optimum operation amount in adjusting the opening of the intake gate, which is necessary from the relational expression between theory and measurement. The amount of intake gate operation is obtained, the change in the dam water level is predicted, the amount of operation corresponding to the change is obtained, and further, the hourly average water level of the intake channel is controlled so as to become the target water level. Although the water level of the intake channel can be controlled with an error of several millimeters relative to the target water level, the control becomes complicated. In addition, a water intake amount control program for achieving this must be newly installed in the control device, or the control device itself must be updated, so that it is difficult to apply it to the existing control device.

  An object of the present invention is to provide a water volume management control device and system that can be easily applied to an existing control device with simple control, and that can effectively use water while keeping the water intake amount below the authorized maximum value. It is.

  In the present invention, in addition to the control water level upper limit value HWL and the control water level lower limit value LWL, the control water level intermediate upper value HS and the control water level intermediate lower value LS are set in the control water level setting unit in advance, The water level WL is maintained between the control water level upper limit value HWL and the control water level lower limit value LWL, and even if the water level in the water channel is within the range between the control water level upper limit value HWL and the control water level lower limit value LWL, When WL is in the range of the control water level intermediate high value HS and the control water level intermediate low value LS or in the range of the control water level intermediate low value LS and the control water level lower limit value LWL, the water level of the water channel is the control water level upper limit value HWL and the control water level. Control is performed so that the water level is between the upper intermediate value HS.

  According to the present invention, the control water level intermediate upper value HS and the control water level intermediate lower value LS are provided, and the water level WL of the intake channel 13 is within the range between the control water level upper limit value LWL and the control water level intermediate upper value HS by the intake gate operation unit. Since the control is only performed so as to change, the control is simple and can be easily applied to the existing control device, so that the existing control device can be effectively used. Moreover, it is possible to prevent the water level WL of the intake channel 13 from changing near the control water level lower limit value LWL and preventing the water from being effectively used while maintaining the water intake amount below the authorized maximum value.

The block diagram which shows an example of the water quantity management control apparatus which concerns on 1st Embodiment of this invention. Explanatory drawing of the control content of the water intake amount adjustment to the water channel performed by the water quantity management control apparatus which concerns on 1st Embodiment of this invention. The block diagram which shows another example of the water quantity management control apparatus which concerns on 1st Embodiment of this invention. The graph compared with what adjusted the waterway water level and power generation output adjusted with the water quantity management control apparatus which concerns on 1st Embodiment of this invention with the conventional water quantity management control apparatus. The block diagram of the water quantity management control system which concerns on 2nd Embodiment of this invention. The block diagram which shows an example of the water intake of a hydroelectric power generation facility. Explanatory drawing of the control content of the water intake amount adjustment to the water channel performed by the conventional water amount control apparatus. The graph of the waterway level and dam water level adjusted with the conventional water quantity control apparatus.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a water volume management control device according to the first embodiment of the present invention. FIG. 1 shows a case where the water amount management control device 18 is applied to the hydroelectric power generation facility shown in FIG. The same elements as those in FIG. 6A are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 1, the water amount management control device 18 has a control water level setting unit 19. The control water level setting unit 19 includes a first control water level setting unit 20 and a second control water level setting unit 21, and upper and lower limit values and set values of the respective control water levels are set in advance. A control water level upper limit value HWL and a control water level upper limit value HWL are set in the first control water level setting unit 20. As described above, the control water level upper limit value HWL indicates the water intake amount of the authorized maximum value in the water use facility, and the control water level lower limit value LWL can be taken into the water use facility via the water channel 13. It is the water level WL of the water channel 13 which shows the amount of water intake. On the other hand, the control water level lower limit value LWL is a water level for preventing the water flow rate from being below when the river flow rate is greater than or equal to the authorized water intake amount in order to make effective use of water, and ensures the water intake amount that can be effectively used by the hydroelectric power generation facility. It is the water level of the canal.

  Further, the control water level intermediate upper value HS and the control water level intermediate lower value LS are set in the second control water level setting unit 21 of the control water level setting unit 19. The control water level intermediate upper value HS and the control water level intermediate lower value LS are set values provided to prevent the water level WL of the water channel 13 from changing near the control water level lower limit LWL. As shown in FIG. 2, within the range (water level control width WLD) between the control water level upper limit value HWL and the control water level lower limit value LWL, the width is evenly spaced vertically from the intermediate value between the control water level upper limit value HWL and the control water level lower limit value LWL. The upper direction is the control water level intermediate upper value HS, and the lower direction is the control water level intermediate lower value LS. The control water level middle upper value HS and the control water level middle lower value LS will be described later.

  The water level WL of the intake channel 13 of the hydroelectric power generation facility is detected by the water level gauge 16 and input to the input unit 22 of the water amount management control device 18. The water level WL of the intake channel 13 input to the input unit 22 is input to the intake gate operation unit 23. The intake gate operation unit 23 includes an intake gate closing operation unit 24, an intake gate first opening operation unit 25, an intake gate second opening operation unit 26, and an intake gate third opening operation unit 27.

  The intake gate closing operation unit 24 of the intake gate operation unit 23 is configured such that when the water level WL of the water channel 13 becomes equal to or higher than the control water level upper limit value HWL, the water intake gate 12 is set so that the water level WL of the water channel 13 becomes equal to or lower than the control water level upper limit value HWL. Is closed. As a result, the water level WL of the water channel 13 is lowered. Details of this will be described later. The closing operation command from the intake gate operation unit 23 is output from the output unit 28 to the hoisting machine 17 via the hoisting machine operation panel 15, and the hoisting machine 17 closes the intake gate 12.

  Next, when the water level WL of the water channel 13 becomes equal to or lower than the control water level lower limit value LWL, the water intake gate first opening operation unit 25 of the water intake gate operation unit 23 sets the water level WL of the water channel 13 to the control water level upper limit value HWL and the control water level. The intake gate 12 is opened so as to be in the range with the lower limit LWL. Thereby, the water level WL of the water channel 13 is raised. Details of this will be described later. The first opening operation command from the intake gate first opening operation unit 25 is output from the output unit 28 to the hoisting machine 17 via the hoisting machine operation panel 15, and the hoisting machine 17 opens the intake gate 12. Manipulate.

  Next, the intake gate second opening operation unit 26 and the intake gate third opening operation unit 27 of the intake gate operation unit 23 prevent the water level WL of the water channel 13 from changing near the control water level lower limit LWL. The water intake gate 12 is opened. First, when the water level WL of the water channel 13 is within the range between the control water level middle upper value HS and the control water level middle lower value LS, the intake gate second opening operation unit 26 controls the water level WL of the water channel 13 to be the control water level upper limit value HWL. The intake gate 12 is opened so that the water level is between the water level intermediate high value HS. Details of this will be described later. The second opening operation command from the intake gate second opening operation unit 26 is output from the output unit 28 to the hoisting machine 17 via the hoisting machine operation panel 15, and the hoisting machine 17 opens the intake gate 12. To do.

  Next, similarly to the intake gate second opening operation unit 26 of the intake gate operation unit 23, the intake gate third opening operation unit 27 of the intake gate operation unit 23 also has a water level WL in the vicinity of the control water level lower limit LWL. In order to prevent the transition, the intake gate 12 is opened. When the water level WL of the water channel 13 is in the range between the control water level middle lower value LS and the control water level lower limit value LWL, the water intake gate third opening operation unit 27 sets the water level WL of the water channel 13 to the control water level middle upper value HS and the control water level middle. The water intake gate 12 is opened so that the water level is between the lower price LS. Details of this will be described later. The third opening operation command from the intake gate third opening operation unit 27 is output from the output unit 28 to the hoisting machine 17 via the hoisting machine operation panel 15, and the hoisting machine 17 operates to open the intake gate 12. To do.

  When the water level WL of the water channel 13 becomes a water level between the control water level intermediate upper value HS and the control water level intermediate lower value LS by the intake gate third opening operation unit 27, the water level WL of the water channel 13 is acquired by the intake gate second opening operation unit 26. Is controlled so that the water level is between the control water level upper limit value HWL and the control water level intermediate upper value HS. As a result, the water level WL of the water channel 13 is between the control water level intermediate lower value LS and the control water level lower limit value LWL. Even within the range, the water level WL in the water channel 13 becomes a water level between the control water level upper limit value HWL and the control water level intermediate upper value HS by the intake gate second opening operation unit 26 and the intake gate third opening operation unit 27. To be controlled.

  FIG. 2 is an explanatory diagram of the control content of the water intake amount adjustment to the water channel 13 performed by the water amount management control device 18 according to the first embodiment of the present invention. As shown in FIG. 2, in addition to the control water level upper limit value HWL and the control water level lower limit value LWL, a control water level intermediate upper value HS and a control water level intermediate lower value LS are additionally provided for the water level WL of the water channel 13. . The control water level intermediate upper value HS and the control water level intermediate lower value LS are set values provided to prevent the water level WL of the water channel 13 from changing near the control water level lower limit LWL, as described above. Within the range (water level control width WLD) between the water level upper limit value HWL and the control water level lower limit value LWL, the upper level is controlled with an equal width from the intermediate value between the control water level upper limit value HWL and the control water level lower limit value LWL. The water level intermediate upper value HS is indicated, and the downward direction is the control water level intermediate lower value LS.

  Now, the width between the control water level upper limit value HWL and the control water level lower limit value LWL is the water level control width WLD, the width between the control water level upper limit value HWL and the control water level intermediate upper value HS is the upper water level width WLDu, the control water level intermediate upper value HS and the control water level. The width between the intermediate lower value LS and the control water level intermediate lower value LS and the control water level lower limit LWL is defined as the lower water level width WLDd. Hereinafter, for example, a case where the water level control width WLD is 5 cm, the upper water level width WLDu is 2 cm, the intermediate water level width WLDm is 1 cm, and the lower water level width WLDd is 2 cm will be described.

  When the water level WL of the water channel 13 becomes equal to or higher than the control water level upper limit value HWL, the water level WL of the water channel 13 is set to the control water level upper limit value HWL and the control water level lower limit value LWL by the intake gate closing operation unit 24 of the intake gate operation unit 23. The intake gate 12 is closed for the water level lowering control time Td with the unit operation amount α (m / min) of the hoisting machine 17 so as to fall within the water level width (water level control width WLD). This operation is the same as that of the conventional water amount control device 14, and the intake gate closing operation opening degree Od is expressed by the equation (1).

Od = α · Td (1)
Now, assuming that the unit operation amount α of the hoisting machine 17 is 0.3 m / min (= 0.5 cm / s) in the standard specification and the water level lowering control time Td is 10 s, the water level WL of the water channel 13 is the control water level. When the intake gate closing operation opening degree Od becomes equal to or higher than the upper limit value HWL, the intake gate 12 is closed by 5 cm / s.

  On the other hand, when the water level WL in the water channel 13 becomes equal to or lower than the control water level lower limit value LWL, the water level in the water channel 13 is set to the control water level upper limit value HWL and the control water level lower limit value by the intake gate first opening operation unit 25 of the intake gate operation unit 23. The intake gate 12 is opened for the water level raising control time Tu by the unit operation amount α (m / min) of the hoisting machine 17 so as to rise within the water level width (water level control width WLD) with the value LWL. This operation is the same operation as that of the conventional water amount control device 14, and the intake gate opening operation opening degree Ou is expressed by equation (2).

Ou = α · Tu (2)
Now, if the unit operation amount α of the hoisting machine 17 is 0.3 m / min (= 0.5 cm / s) in the standard specification and the water level raising control time Tu is 7 s, the intake gate opening operation opening degree Ou is Substituting 0.5 cm / s for α in equation (2) and 7 s for Tu yields 3.5 cm. That is, when the intake gate 12 is opened for the water level raising control time Tu (7 s) at the rate of change α (0.5 cm / s), the intake gate opening operation opening degree Ou becomes 3.5 cm.

  Next, when the water level WL in the water channel 13 falls within the range (intermediate water level width WLDm) between the control water level intermediate high value HS and the control water level intermediate low value LS, the intake gate second opening operation unit 26 of the intake gate operation unit 23 is provided. Accordingly, the intermediate water level raising time Tum at the unit operation amount α (m / min) of the hoisting machine 17 so that the water level WL of the water channel 13 becomes a water level between the control water level upper limit value HWL and the control water level intermediate upper value HS. Only the intake gate 12 is opened. In this case, the intermediate opening operation amount Oum of the water intake gate 12 is expressed by equation (3).

Oum = α · Tum (3)
Now, assuming that the unit operation amount α of the hoisting machine 17 is 0.3 m / min (= 0.5 cm / s) in the standard specification and the intermediate water level raising time Tum is 3 s, the intermediate opening operation of the intake gate 12 is opened. The degree Oum is 1.5 cm when 0.5 cm / s is substituted for α in Equation (3) and 3 s is substituted for Tum. That is, when the intake gate 12 is opened for the intermediate water level raising time Tum (3 s) at the change rate α (0.5 cm / s), the intermediate opening operation opening degree Oum of the intake gate 12 becomes 1.5 cm.

  When the water level WL of the water channel 13 falls within the range (lower water level width WLDd) between the control water level intermediate lower value LS and the control water level lower limit value LWL, the intake gate third opening operation unit 27 of the intake gate operation unit 23 , Only the intermediate water level raising time Tua at the unit operation amount α (m / min) of the hoisting machine 17 so that the water level WL of the water channel 13 becomes a water level between the control water level intermediate high value HS and the control water level intermediate low value LS. The intake gate 12 is opened. In this case, the intermediate opening operation opening degree Oua of the intake gate 12 is expressed by the equation (4).

Oua = α · Tua (4)
Now, assuming that the unit operation amount α of the hoisting machine 17 is 0.3 m / min (= 0.5 cm / s) in the standard specification and the intermediate water level raising time Tua is 5 s, the intermediate opening operation of the intake gate 12 is opened. The degree Oua becomes 2.5 cm when 0.5 cm / s is substituted for α in Equation (4) and 5 s is substituted for Tua. That is, when the intake gate 12 is opened at the rate of change α (0.5 cm / s) for the intermediate water level raising time Tud (5 s), the downward opening operation opening degree Oud of the intake gate 12 becomes 2.5 cm.

Further, when the water level WL of the water channel 13 falls within the range (upper water level width WLDu) between the control water level upper limit value HWL and the control water level intermediate upper value HS, the intake gate first opening operation unit 25 of the intake gate operation unit 23, Neither the intake gate second opening operation portion 26 nor the intake gate third opening operation portion 27 operates.
That is, it is a control dead zone region. When the water level WL of the water channel 13 is in the upper water level width WLDu, the water level WL of the water channel 13 is in a state of changing near the control water level upper limit value HWL, and the water intake amount of the water channel 13 can be effectively utilized. Because.

  Here, the intake gate closing operation unit 24 and the intake gate first opening operation unit 25 of the intake gate operation unit 23 input the water level WL of the water channel 13 at a predetermined control cycle, and control the water level WL of the water channel 13. The predetermined control cycle is a cycle that does not hinder the control of the water level WL of the water channel 13. In the first embodiment of the present invention, the water level WL of the water channel 13 is input and controlled at a first time interval (for example, every 7 minutes) as a predetermined control cycle.

  Similarly, the intake gate second opening operation unit 26 and the intake gate third opening operation unit 27 of the intake gate operation unit 23 also input the water level WL of the water channel 13 at a predetermined control cycle, and the water level WL of the water channel 13 is changed. Control. The predetermined control cycle is a cycle that does not hinder the control for preventing the water level WL of the water channel 13 from changing near the control water level lower limit LWL. In the first embodiment of the present invention, the water level WL of the water channel 13 is input and controlled at a second time interval (for example, every 3 minutes) as a predetermined control cycle. The reason why the second time interval is shorter than the first time interval is that the control by the intake gate second opening operation portion 26 and the intake gate third opening operation portion 27 of the intake gate operation portion 23 is the control water level upper limit value HWL. This is because the water level WL of the water channel 13 within the range of the control water level lower limit value LWL is finely controlled. As described above, in the first embodiment of the present invention, since the predetermined control cycle is set in units of time, the calculation processing of the intake gate operation unit 23 can be reduced.

  Next, FIG. 3 is a configuration diagram illustrating another example of the water amount management control device according to the first embodiment. Another example is that, instead of the water intake gate second opening operation unit 26 and the water intake gate third opening operation unit 27, an example of the water amount management control device according to the first embodiment shown in FIG. A four-open operation unit 29 is provided.

  When the water level WL of the water channel 13 is in the range between the control water level middle lower value LS and the control water level lower limit value LWL, the water intake gate fourth opening operation unit 29 sets the water level WL of the water channel 13 to the control water level upper limit value HWL and the control water level. A fourth opening operation command for opening the intake gate 12 is output so that the water level is between the upper intermediate value HS. Also in this case, the water level WL of the water channel 13 can be controlled as in the case of the example of the first embodiment of the present invention shown in FIG.

  FIG. 4 is a graph comparing the water level and power generation output adjusted by the water amount management control device 18 according to the first embodiment of the present invention with those adjusted by a conventional water amount management control device. Is a graph of the water channel level, and FIG. 4B is a graph of the power generation output. In FIG. 4, the operational data of the hydroelectric power generation equipment is operated with a water level control width WLD of 5 cm, an upper water level width WLDu of 2 cm, an intermediate water level width WLDm of 1 cm, and a lower water level width WLDd of 2 cm. FIG. 4 shows a case where the water level WL of the water channel 13 adjusted by the conventional water amount control device is controlled at a predetermined control cycle (for example, every 7 minutes).

  In FIG. 4A, the broken line C11 is the water level WL of the water channel 13 when controlled by the water amount management control device 18 according to the first embodiment of the present invention, and the broken line C12 is the water channel when controlled by the conventional water amount control device 14. 13 water levels WL are shown. In FIG. 4B, the broken line P11 is a power generation output (improved power generation output) when controlled by the water amount management control device 18 according to the first embodiment of the present invention, and the broken line P12 is controlled by the conventional water amount control device 14. The power generation output (former power generation output) is shown. The improved power generation output is a power generation output when the intake gate second opening operation unit 26 and the intake gate third opening operation unit 27 or the intake gate fourth opening operation unit 29 is used, and the previous power generation output is the intake gate. This is a power generation output when the second opening operation portion 26 and the intake gate third opening operation portion 27 or the intake gate fourth opening operation portion 29 are not used.

  Conventionally, as shown by a broken line C12 in FIG. 4 (a), the water level WL of the water channel 13 changes in the vicinity of the control water level lower limit LWL, and the water cannot be effectively used. In the first embodiment, as shown by the broken line C11 in FIG. 4A, the water level WL of the water channel 13 is substantially changed within the upper water level width WLDu, so that the water of the water channel 13 can be effectively utilized. In the prior art, the power generation output is about (P0 + 150) kW as shown by the broken line P12 in FIG. 4B, but in the first embodiment of the present invention, it is shown by the curve P11 in FIG. 4B. Thus, the power generation output is about (P0 + 186) kW, and the power generation output is increased by about 36 kW. This is because the water to the water channel 13 can be effectively utilized.

  According to the first embodiment of the present invention, the control water level upper limit value HWL and the control water level lower limit value LWL (water level control width WLD) are within the range (water level control width WLD) of the control water level upper limit value HWL and the control water level lower limit value LWL. The control water level intermediate upper value HS and the control water level intermediate lower value LS are provided in the upward direction with a uniform width up and down from the intermediate value)), and the intake gate second opening operation unit 26 and the intake gate third opening operation of the intake gate operation unit 23 are provided. Since the control unit 27 only controls the water level WL of the water channel 13 to change within the range (upper water level width WLDu) between the control water level upper limit value HWL and the control water level intermediate upper value HS, the control is simple and the existing control device Easy to apply to. Further, since the water level WL of the water channel 13 can be maintained within the range (upper water level width WLDu) between the control water level upper limit value HWL and the control water level intermediate upper value HS, the water channel while maintaining the water intake amount to the water channel 13 below the authorized maximum value. Effective use of water to 13 can be achieved.

  Next, a second embodiment of the present invention will be described. FIG. 5 is a configuration diagram of a water volume management control system according to the second embodiment of the present invention. This second embodiment is different from the example of the first embodiment shown in FIG. 1 in a water amount management control system having a water amount management control device 18 and a monitoring device 30 for monitoring the turbine generator facility. The system monitoring device 30 is provided with a power generation output storage unit 31 and an incremental power amount calculation unit 32. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

  The power generation output storage unit 31 stores the power generation output (improved power generation output) of the water turbine generator facility that is the control target of the water volume management control device 18. That is, the power generation output data generated by the water turbine generator (not shown) of the water turbine generator facility is transmitted from the water turbine generator facility to the monitoring device 30 and stored in the power generation output storage unit 31 of the monitoring device 30. Thereby, the power generation output (improved power generation output) of the water turbine generator facility for a predetermined period is stored in the power generation output storage unit 31 in the monitoring device 30. In addition, a conventional power generation output is set in advance in a storage device (not shown) of the incremental power amount calculation unit 32. As described above, the conventional power generation output is a power generation output when the intake gate second opening operation portion 26 and the intake gate third opening operation portion 27 or the intake gate fourth opening operation portion 29 is not used. The incremental power amount calculation unit 32 calculates the difference between the improved power generation output and the charging power generation output, and multiplies the difference by the target time to calculate the incremental power amount.

  In the above description, the water amount management control system having the water amount management control device 18 and the monitoring device 30 for monitoring the water turbine generator facility is described with respect to the example of the first embodiment shown in FIG. Although omitted, the present invention can be applied to another example of the first embodiment shown in FIG.

  According to the second embodiment of the present invention, the improved power generation output and the incremental power amount are obtained, so that the effective activity of water within the authorized water intake range and the management of the water turbine generator facility are improved. In particular, with regard to the economic benefits (electricity charges) obtained for the incremental power consumption, the owner of the water turbine generator equipment and the inventor related to the present invention (for example, the inventor, the person who has inherited the invention, the provision of funds) Etc.).

  In the above description, the case of a hydroelectric power generation facility was explained as the water utilization facility, but the authorized maximum value from the water utilization facility or storage facility that manages and controls so that the amount of water used in the factory does not exceed the authorized maximum value. It can also be applied to water-use facilities that manage and control the amount of water discharged so as not to exceed. In this case, the economic profit due to the increase in the amount of water intake can be calculated, and the economic profit due to the increase in the amount of water intake can be apportioned between the owner of the water utilization facility and the management controller of the water utilization facility.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Weir, 12 ... Intake gate, 13 ... Water channel, 14 ... Water quantity control apparatus, 15 ... Hoisting machine operation panel, 16 ... Water level meter, 17 ... Hoisting machine, 18 ... Water quantity management control apparatus, 19 ... Control water level setting , 20 ... first control water level setting unit, 21 ... second control water level setting unit, 22 ... input unit, 23 ... intake gate operation unit, 24 ... intake gate closing operation unit, 25 ... intake gate first opening operation unit, 26 ... Intake gate second opening operation section, 27 ... Intake gate third opening operation section, 28 ... Output section, 29 ... Intake gate fourth opening operation section, 30 ... Monitoring device, 31 ... Power generation output storage section, 32 ... Increment Electric energy calculation part

As shown in FIG. 1, the water amount management control device 18 has a control water level setting unit 19. The control water level setting unit 19 includes a first control water level setting unit 20 and a second control water level setting unit 21, and upper and lower limit values and set values of the respective control water levels are set in advance. A control water level upper limit value HWL and a control water level lower limit value LWL are set in the first control water level setting unit 20. As described above, the control water level upper limit HWL is limited to showing water intake authorization maximum at water utilization facility water level, the water channel 13 showing the water intake amount via the water channel 13 can intake water utilization facility Water level WL. On the other hand, the control water level lower limit value LWL is a water level for preventing the water flow rate from being below when the river flow rate is greater than or equal to the authorized water intake amount in order to make effective use of water, and ensures the water intake amount that can be effectively used by the hydroelectric power generation facility. It is the water level of the canal.

Further, when the water level WL of the water channel 13 falls within the range (upper water level width WLDu) between the control water level upper limit value HWL and the control water level intermediate upper value HS, the intake gate first opening operation unit 25 of the intake gate operation unit 23, Neither the intake gate second opening operation portion 26 nor the intake gate third opening operation portion 27 operates . That is, it is a control dead zone region. When the water level WL of the water channel 13 is in the upper water level width WLDu, the water level WL of the water channel 13 is in a state of changing near the control water level upper limit value HWL, and the water intake amount of the water channel 13 can be effectively utilized. Because.

FIG. 4 is a graph comparing the water level and power generation output adjusted by the water amount management control device 18 according to the first embodiment of the present invention with those adjusted by a conventional water amount management control device. Is a graph of the water channel level, and FIG. 4B is a graph of the power generation output. In FIG. 4, the operational data of the hydroelectric power generation equipment is operated with a water level control width WLD of 5 cm, an upper water level width WLDu of 2 cm, an intermediate water level width WLDm of 1 cm, and a lower water level width WLDd of 2 cm. FIG. 4 shows a case where the water level WL of the water channel 13 is controlled at a predetermined control cycle (for example, the first time interval is 7 minutes and the second time interval is 3 minutes) .

Claims (6)

In the water volume management control device of the water use facility that controls the intake amount from the water source so that the water intake amount to the water use facility does not exceed the authorized maximum value via the water channel,
A control water level upper limit value HWL at which the amount of water intake to the water use facility is equal to or lower than the approved maximum value via the intake channel and a minimum water intake amount for effective use of water in the water use facility are secured. A first control water level setting unit that previously stores a control water level lower limit LWL for
Within the range of the control water level upper limit value HWL and the control water level lower limit value LWL, the control water level intermediate provided in the upward direction with a uniform width up and down from the intermediate value between the control water level upper limit value HWL and the control water level lower limit value LWL A second control water level setting unit that stores in advance an upper value HS and a control water level intermediate lower value LS provided in the downward direction;
When the water level in the water channel becomes equal to or higher than the control water level upper limit value HWL, the water intake gate is closed for outputting a closing operation command for closing the water intake gate so that the water level in the water channel falls below the control water level upper limit value HWL. An operation unit;
When the water level of the water channel becomes equal to or lower than the control water level lower limit value LWL, the water intake gate is opened so that the water level of the water channel becomes a water level between the control water level upper limit value HWL and the control water level intermediate upper value HS. A water intake gate first opening operation section for outputting a first opening operation command for
When the water level of the water channel is within the range between the control water level intermediate high value HS and the control water level intermediate low value LS, the water level of the water channel becomes a water level between the control water level upper limit value HWL and the control water level intermediate high value HS. A water intake gate second opening operation unit that outputs a second opening operation command for opening the water intake gate,
When the water level of the water channel is within the range between the control water level intermediate lower value LS and the control water level lower limit value LWL, the water level of the water channel is a water level between the control water level intermediate upper value HS and the control water level intermediate lower value LS. A water volume management control device for water utilization equipment, comprising a water intake gate third opening operation unit that outputs a third opening operation command for opening the water intake gate.   Instead of the intake gate second opening operation portion 26 and the intake gate third opening operation portion 27, when the water level of the water channel is within the range between the control water level intermediate lower value LS and the control water level lower limit value LWL, the Intake gate fourth opening operation unit for outputting a fourth opening operation command for opening the intake gate so that the water level of the water channel becomes a water level between the control water level upper limit value HWL and the control water level intermediate upper value HS. The water amount management control device for water utilization equipment according to claim 1, wherein:   The said intake gate closing operation part and the said intake gate 1st opening operation part input the water level of the said water channel at predetermined 1st time intervals, and control the water level of the said water channel. Item 3. A water volume management control device for water-use equipment according to item 2.   The intake gate second opening operation portion and the intake gate third opening operation portion, or the intake gate fourth opening operation portion inputs the water level of the water channel at a second time interval shorter than the first time interval, The water level management control device for water-use equipment according to claim 3, wherein the water level of the water channel is controlled.   The water utilization facility is a turbine generator facility, and includes the water volume management control device according to any one of claims 1 to 4 and a monitoring device that monitors the turbine generator facility, and the monitoring device includes A water volume management control system comprising a power generation output storage unit storing a power generation output of the water turbine generator facility.   The monitoring device includes a power generation output of the water turbine generator facility when the intake gate second opening operation portion and the intake gate third opening operation portion are used, the intake gate second opening operation portion, and the intake gate third. The water amount management control system according to claim 5, further comprising an incremental power amount calculation unit that calculates an incremental power amount from a difference from a power generation output of the water turbine generator facility when the opening operation unit is not used.

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