JP2010044551A - Device and program for calculating water type power generation output - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and properly calculate the power generation quantity of a water type power generation including an inflow type hydraulic power generation. <P>SOLUTION: The water type power generation output calculation device includes: a water type database 4 for storing a hydraulic flow system showing the flow of water flowing in each plant; a branch database 5 for storing water quantity flowing from the branch to the plant in association with the tidal state of the branch; and a power generation quantity task 71 for calculating the power generation quantity of each plant based on the hydraulic flow system stored in the hydraulic flow database 4 and the water quantity from the branch acquired from the branch database 5 based on the tidal state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water power generation output calculation device and a water power generation output calculation program for calculating a power generation amount of water power generation including flow-in hydropower generation.

  When preparing a power outage plan for water-based power generation or considering power system operation, it is necessary to calculate the power generation amount (power generation output) of the entire water-based power generation when considering the capacity of the transmission line. That is, the power generation amount at each power plant is calculated, and the power generation amount of the entire water-based power generation is calculated based on the calculation result. In such calculation, when flow-through hydropower generation is included, the amount of water used at the upstream power plant also varies as the amount of water used at the upstream power plant, that is, the output fluctuates. The overall power generation amount is greatly influenced by the power generation amount. Further, in the downstream power plant, water from a tributary may also flow. In such a case, it is necessary to calculate the amount of power generation in consideration of the amount of water from the tributary.

On the other hand, there is known a power generation operation plan creation support apparatus that makes it possible to create an appropriate power generation operation plan more flexibly even under many constraints and complicated conditions (see, for example, Patent Document 1). ). Based on the standard daily rate, this device obtains operational data under the established operational plan creation conditions. If the operational data is not satisfactory, the past data is retrieved and based on the extracted actual data. To calculate operational data. Further, when the operation data is not satisfactory, one of the power generation discharge flow curve and the dam water level curve displayed on the display device is corrected by drag and drop, and the other curve is automatically corrected. As a result, it is possible to flexibly create an appropriate power generation operation plan that takes into account complicated conditions that cannot be given as operation plan preparation conditions.
JP 2006-039838 A

  By the way, the calculation of the power generation amount as described above has been performed manually by a conventional person. For this reason, not only time and labor are required, but there is a possibility that proper calculation is not performed. In particular, when flow-in hydropower generation is included, the calculation is complicated as described above, and the amount of water from the tributary is set to calculate the amount of power generation, which differs depending on the person who calculates it. A wealth of knowledge and experience was required to gain In other words, there are cases where the calculation results vary depending on the experience of the person who calculates, and the appropriate amount of power generation cannot be calculated.

  Moreover, in the apparatus described in the above-mentioned Patent Document 1, it is possible to create an appropriate power generation operation plan taking into account complicated conditions, but it is necessary to determine whether or not the operation data should be satisfied. In addition, the configuration of the apparatus is complicated. Furthermore, in the case of including inflow-type hydroelectric power generation, it does not support how much the amount of water from the tributary should be, and the above-mentioned power generation amount cannot be calculated appropriately.

  Therefore, an object of the present invention is to provide a water-system power generation output calculation device and a water-system power generation output calculation program that can easily and appropriately calculate the power generation amount of water-system power generation including flow-in hydropower generation.

  In order to achieve the above object, the invention described in claim 1 is a water flow system memory for storing a water flow system indicating a flow of water flowing into each power plant in water power generation in which water flows from an upstream power plant to a downstream power plant. Means, a branch flow storage means for storing the amount of water flowing from the branch into the power plant in association with related information, which is information related to the amount of water, a water flow system stored in the water flow system storage means, and based on the related information And a power generation amount calculating means for calculating the power generation amount of each power plant based on the water amount from the tributary obtained from the branch flow rate storage means.

  According to this invention, the water flow system indicating how water flows between the power plants is stored in the water flow system storage means, and the amount of water flowing from the tributaries into the power plant is associated with the related information and the branch flow storage means. Is remembered. Then, the power generation amount calculation means calculates the power generation amount at each power plant based on the water flow between the power plants by the water flow system and the water amount from the tributary by the related information.

  According to a second aspect of the present invention, in the water-system power generation output calculation device according to the first aspect, the time required for the water to flow from the upstream power plant to the downstream power plant is stored in the water flow system storage means. The power generation amount calculation means is stored as an inter-hour time, and the power generation amount of each power plant is calculated in time series based on the inter-power plant time stored in the water flow system storage means.

  According to the present invention, the power generation amount of each power plant is calculated in chronological order, that is, how much power generation amount is output (when) at each power plant.

  According to a third aspect of the present invention, in the water-system power generation output calculation device according to the first or second aspect, the branch flow rate storage unit stores a tidal state of a tributary as the related information, and the power generation amount calculation unit includes: The power generation amount is calculated based on the input related information.

  According to this invention, when the tidal state of the tributary is input, the amount of water from the tributary that matches the tidal state is acquired from the tributary flow storage means, and the power generation amount of each power plant is calculated based on the amount of water.

  According to a fourth aspect of the present invention, in the water-based power generation output calculation device according to any one of the first to third aspects, the power system storage unit that stores a power system indicating a connection state between the power plants, and the power generation amount calculation unit And tidal current calculating means for calculating a power flow between the power plants based on the calculated power generation amount of each power plant and the power grid stored in the power grid storage means.

  According to a fifth aspect of the present invention, there is provided a water flow system storage means for storing a water flow system indicating a flow of water flowing into each power plant in water power generation in which water flows from an upstream power plant to a downstream power plant, and a tributary The flow rate storage means for storing the water amount flowing into the power plant in association with related information that is information related to the water amount, the water flow system stored in the water flow system storage means, and the branch flow rate based on the related information A water-based power generation output calculation program for functioning as power generation amount calculation means for calculating the power generation amount of each power plant based on the amount of water from a tributary acquired from storage means.

  According to the first and fifth aspects of the present invention, the power generation amount at each power plant is calculated based on the flow of water between the power plants and the amount of water from a tributary flowing into the power plant. In other words, the power generation amount is calculated considering the output fluctuation of the downstream power plant due to fluctuations in the amount of water used at the upstream power plant and the amount of water flowing from the tributaries to the downstream power plant. It is possible to appropriately calculate the amount, and further, the amount of power generation of the entire water-based power generation. Moreover, it is possible to easily calculate by simply inputting related information that is information related to the amount of water from the tributary.

  According to the invention described in claim 2, since the power generation amount of each power plant is calculated in time series, when and how much power is output at which power plant, and further, the power generation of the entire water-based power generation You can see when and how much the amount will be. As a result, it is possible to easily and appropriately perform a power outage plan and examination of power system operation.

  According to the third aspect of the present invention, it is possible to easily calculate an appropriate amount of power generation suitable for the tidal state simply by inputting the tidal state of the tributary.

  According to the invention of claim 4, since the power flow between the power plants is calculated based on the calculated power generation amount and the power system between the power plants, the output fluctuation due to the amount of water used in the upstream power plant In addition, it is possible to appropriately and easily grasp the power flow considering the amount of water flowing from the tributary.

  The present invention will be described below based on the illustrated embodiments.

  FIG. 1 is a schematic block diagram showing a water-system power generation output calculation device 1 according to an embodiment of the present invention. This water-system power generation output calculation device 1 is a device for calculating the power generation amount of water-system power generation including flow-in hydropower generation, and mainly includes an input device 2, a display device 3, a water system database (water flow system storage means) 4, A tributary database (branch flow storage means) 5, a power database (power system storage means) 6, and a central processing unit 7 are provided.

  The input device 2 is a device for inputting a water system, the amount of water used, and the like, which will be described later, and includes a keyboard, a mouse, and the like. The display device 3 is a device that displays a water flow system, a power system, a calculation result, and the like, which will be described later, and includes a liquid crystal display or the like.

  The water system database 4 is a storage device that mainly stores the water flow system and the time between power plants. Here, the water flow system is a system showing the flow of water flowing into each power plant in the water power generation in which water flows from the upstream power plant to the downstream power plant. It shows the time required to flow from the power station to the downstream power plant. Specifically, a water flow system is stored for each water system of one river, for example, a water flow system as shown in FIG. 2 is stored.

  In this water flow system, water from the AA dam flows to the AA1 power plant, and water that flows out (discharged) from the AA1 power plant flows into the AA2 power plant. At this time, water from the AC river as a tributary also flows into the AA2 power plant. Here, the tributary means not a flow (main stream) flowing from the AA dam (source stream) to the downstream power plant, but a flow flowing from another route to the downstream power plant. Subsequently, water flowing out from the AA2 power plant flows into the AB regulating pond, and water from the AD river and AE river, which are tributaries, also flows into the AB regulating pond. Furthermore, water flowing out from the AA3 power plant flows into the AB regulating pond as a tributary. Next, water from the AB regulating pond flows to the AA4 power plant, and water that flows out from the AA4 power plant flows into the AA5 power plant. At this time, water from the AF and AG rivers, which are tributaries, also flows into the AA5 power plant, and part of the water flowing to the AA5 power plant is discharged into the AH river. On the other hand, water from the BB dam flows to the BB1 power plant, and water that flows out from the BB1 power plant flows into the BB2 power plant.

  Moreover, the time required for water to flow between each power plant is stored as the time between power plants. For example, the time from the AA1 power plant to the AA2 power plant is 30 minutes, the time from the AA4 power plant to the AA5 power plant is 1 hour 30 minutes, and the like. Furthermore, the time required for the water from the dam to flow to the power plant immediately downstream is stored. For example, the time from the AA dam to the AA1 power plant is stored as 30 minutes.

  The tributary database 5 is a storage device that stores the amount of water flowing from the tributary into the power plant in association with related information that is information related to the amount of water. Here, the related information means a parameter in which the amount of water from the tributary changes. In this embodiment, the tributary state of the tributary is obtained. Specifically, as shown in FIG. 3, for each tributary code identifying a tributary, the amount of water when the tidal state is drought (“1 ton” in the figure), and the amount of water when the tidal state is normal (“1. 6 tons "), the amount of water when the tidal state is high (" 2.3 tons "in the figure), and the amount of water when the tidal state is out of water (" 0 ton "in the figure) are stored. Here, the data of the tidal state and the amount of water may be input and stored in the tributary database 5 from the input device 2, or the system 1 for measuring and monitoring the flow rate, water level, etc. of each tributary and the present apparatus 1 It may be connected and input and stored by receiving data from this system.

  The power database 6 is a storage device that stores a power system indicating a connection state between power plants. Specifically, as shown in FIG. 4, the arrangement state of the power transmission lines connecting the power plants, the arrangement position of the circuit breaker, and the like are stored as a power system.

  The central processing unit 7 manages and controls the input device 2, the display device 3, and the databases 4 to 6, and includes a power generation amount task (power generation amount calculation means) 71 and a tidal current task (tidal current calculation means) 72. The power generation amount task 71 is a program for calculating the power generation amount of each power plant based on the water flow system stored in the water system database 4 and the water amount from the tributary obtained from the tributary database 5 based on the related information. This is based on the flowchart shown in FIG.

  First, when the power generation amount task 71 is activated, an initial screen for selecting a calculation target water system is displayed on the display device 3 (step S1). When a water system is selected and inputted (step S2), the corresponding water system is selected. A water flow system is acquired from the water system database 4, and the water flow system and an input area are displayed on the display device 3 (step S3). Specifically, as shown in FIG. 6, a screen in which the water flow input points P1 and P2 are added to the positions to be input and the water intake selection points P3 to P11 are added to the positions to be selected is displayed on the water flow system. Display on the device 3.

  Here, the amount of water used at the corresponding power plant can be arbitrarily input to the used water amount input points P1 and P2. Moreover, when the water intake selection points P3 to P11 are selected (clicked), as shown in FIG. 7, the water amount for each tidal state of the tributary stored in the tributary database 5 is displayed, and the tidal state or the water amount is selected. And you can enter the water intake. In addition, an area for inputting the valve opening time is displayed as an input area, and the time for opening the valve of the dam can be arbitrarily input in this area. Here, the input of the valve opening time may be performed before step S8 described later, or may be performed immediately after step S1.

Next, when the amount of water used, the amount of water intake, and the valve opening time are input (step S4), the amount of water used in a predetermined power plant and the amount of inflow water in the regulating pond are calculated and displayed on the display device 3 (step S5). That is, the amount of water used and the amount of inflow water in the power plant and regulating pond to be calculated based on the above input are calculated, and the results are displayed. Specifically, in the case of the above water system, the amount of water used P21 of the AA2 power plant and the amount of water P22 flowing into the AB adjustment pond are calculated as follows. Here, it is assumed that P1 = 1.0, P3 = 0.7, P4 = 0.27, P5 = 0.2, and P6 = 0.8 are input as the used water amount and the intake water amount in step S4.
P21 = P1 + P3 = 1.7
P22 = P21 + P4 + P5 + P6 = 2.97
Then, the calculation results are displayed in the vicinity of the AA2 power plant and the AB adjustment pond, respectively (see FIG. 6).

  Subsequently, it is determined whether or not there is an amount of water to be used and an amount of water to be input (step S6). That is, it is determined whether or not there is a used water amount of the power plant to be input based on the used water amount and the inflow water amount calculated in step S5. If it is determined that there is an amount of water to be input, the process returns to step S4 and waits for the input. For example, in the above water system, it is determined that the amount of water used after the AA4 power plant should be input, and when the amount of water used is input (step S4), the amount of water used and adjustment at a predetermined power plant are performed in the same manner as described above. The amount of inflow water in the pond is calculated and displayed on the display device 3 (step S5).

In the case of the above water system, the amount of water used P23 of the AA5 power plant is calculated as follows. Here, it is assumed that P2 = 2.5, P7 = 0.5, P8 = 0.3, and P9 = 0.7 are input as the used water amount and the intake water amount in step S4. Moreover, P9 shows the amount of water that a part of the water flowing to the AA5 power plant side is discharged into the AH river, and is a negative amount with respect to P23.
P23 = P2 + P7 + P8-P9 = 2.6
Then, the calculation result is displayed in the vicinity of the AA5 power plant (see FIG. 6).

  On the other hand, when all the inputs are completed (in the case of “N” in step S6), the power generation amount at each power plant is calculated (step S7). That is, the power generation amount of each power plant is calculated based on the amount of water used, the amount of water intake (water amount) input and calculated as described above, and the power generation amount per unit water amount in each power plant. Furthermore, the total value of the power generation amount at each power plant is calculated. In the above water system, the total of all power plants not including AA5 power plant is calculated as “subtotal”, and the total of all power plants including AA5 power plant is calculated as “total”. Although the power generation amount is calculated based on the power generation amount per unit water amount, it is needless to say that the power generation amount may be calculated by other calculation methods based on the water amount.

  Subsequently, the power generation amount at each power plant calculated as described above is displayed on the display device 3 in time series (step S8). That is, as shown in FIG. 8, the time (power generation start time) at which power generation is started at each power plant based on the inter-power plant time stored in the water system database 4 with the input valve opening time as a reference. Calculate and display in association with each power plant. Further, the amount of water used input in step S4 and the amount of water used calculated in step S5 are displayed in association with each power plant, and the power generation amount calculated in step S7 is displayed in correspondence with each power plant. At the same time, the above-mentioned “subtotal” and “total” are displayed. In this way, the power generation amount at each power plant is calculated and displayed in time series. Here, in the example of FIG. 8, “1.0” is input as the power generation amount P10 of the BB1 power plant, “0.4” is input as the power generation amount P11 of the BB2 power plant, and “6 o'clock” is the valve opening time. It shows the case where is input.

  The tidal current task 72 is a program that calculates the power flow between the power plants based on the power generation amount of each power plant calculated by the power generation amount task 71 and the power system stored in the power database 6. Specifically, the power generation amount of each power plant calculated in the power generation amount task 71 is used as a parameter, and the power transmission amount to each power plant is determined by the DC method or Newton Raphson method based on each power generation amount and the power system. calculate. Then, as shown in FIG. 9, a power system diagram in which the calculated power transmission amount is displayed in the vicinity of the corresponding power transmission line is displayed on the display device 3.

  Next, the operation of the water-system power generation output calculation device 1 having such a configuration will be described. First, if you want to know the power generation amount of each power plant in the water system and the total, start the power generation task 71 with the input device 2 and enter the target water system, the amount of water used, the amount of water intake, etc. as described above. Input from the device 2. Thereby, as described above, the power generation amount at each power plant is calculated in time series, and the total power generation amount in this water system is calculated, and the result is displayed on the display device 3. Subsequently, when it is desired to know the power flow when such a power generation amount is output at each power plant, the power flow task 72 is activated by the input device 2. Thereby, the power generation amount of each power plant calculated in the power generation amount task 71 is passed as a parameter, the power transmission amount to each power plant is calculated as described above, and the calculation result is displayed on the display device 3. It is.

  As described above, according to this water-system power generation output calculation device 1, the power generation amount at each power plant is calculated based on the flow of water between the power plants and the amount of water from a tributary flowing into the power plant. In other words, the power generation amount is calculated considering the output fluctuation of the downstream power plant due to fluctuations in the amount of water used at the upstream power plant and the amount of water flowing from the tributaries to the downstream power plant. It is possible to appropriately calculate the amount, and further, the power generation amount of the entire water system. In addition, it is possible to easily calculate an appropriate amount of power generation that matches the tidal state simply by selecting the tidal state of the tributary. In other words, even if you do not need specialized or advanced knowledge and experience, you can easily calculate the appropriate amount of power generation by simply entering the tributary status according to the season and weather. .

  In addition, since the power generation amount of each power plant is calculated in time series, how much power is output at which power plant, and when and how much power generation of the entire water system becomes. Easy to grasp. For example, in the above water system (see FIG. 8), when the valve of the dam is opened at 6 o'clock, the power generation amount (total) of the entire water system reaches 8.3 MW at 9:30. As a result, it is possible to easily and appropriately perform examination of power system operation. Furthermore, since the power flow between the power plants is calculated based on the calculated power generation amount, it is possible to appropriately and easily grasp the power flow.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the related information is a tributary state of the tributary, but the season, month, weather, and the like may be used as the related information. For example, the average amount of tributary water for each month is stored in the tributary database 5 for each month, and the tributary water amount is acquired by inputting the month, or the monthly tributary water amount at the time of starting the task is automatically acquired, and the power generation amount May be calculated. Further, instead of selecting the tidal state from the input device 2, measurement data may be acquired from a device that measures and monitors the tidal state of the tributary to determine (calculate) the amount of water from the tributary. Furthermore, although the power generation amount task 71 and the power flow task 72 are activated manually, the power flow task 72 may be automatically started after the power generation amount task 71. Further, by inputting the time at which power generation should be started at the most downstream power plant (AA5 power plant), the power generation start time and valve opening time at the upstream power plant may be calculated (reverse calculation). .

  By installing the following water-based power generation output calculation program on a general-purpose computer, the power generation amount at each power plant can be calculated easily and appropriately with the general-purpose computer. That is, the computer is a water-system power generation output calculation program for causing the water-system database 4, the tributary database 5, and the power generation amount task 71 to function as described above. Furthermore, by making this water system power generation output calculation program a program that causes the computer to function as the power database 6 and the power flow task 72 as described above, it is possible to appropriately and easily grasp the power flow between the power plants. Become.

1 is a schematic block diagram showing a water power generation output calculation device according to an embodiment of the present invention. It is a figure which shows an example of the water flow system memorize | stored in the water system database of the apparatus of FIG. It is a figure which shows an example of the data memorize | stored in the tributary database of the apparatus of FIG. It is a figure which shows an example of the electric power grid | system memorize | stored in the electric power database of the apparatus of FIG. It is a flowchart of the electric power generation amount task of the apparatus of FIG. It is a figure which shows an example of the display screen in the electric power generation amount task of FIG. It is a figure which shows the input method of the water intake from the tributary in the electric power generation amount task of FIG. It is a figure which shows an example of the screen which shows the calculation result etc. of the electric power generation amount in the electric power generation amount task of FIG. It is a figure which shows an example of the screen which shows the calculation result by the tidal current task of the apparatus of FIG.

Explanation of symbols

1 Water Power Generation Output Calculation Device 2 Input Device 3 Display Device 4 Water System Database (Water Flow System Storage Means)
5 Tributary database (branch flow storage means)
6 Electric power database (electric power system storage means)
7 Central processing unit 71 Power generation amount task (power generation amount calculation means)
72 Tidal current task (Tidal current calculation means)

Claims (5)

A water flow system storage means for storing a water flow system indicating a flow of water flowing into each power plant in water power generation in which water flows from an upstream power plant to a downstream power plant;
A branch flow storage means for storing the amount of water flowing from the branch into the power plant in association with related information, which is information related to the amount of water;
A power generation amount calculating means for calculating a power generation amount of each power plant based on the water flow system stored in the water flow system storage means and the water amount from the tributary obtained from the branch flow storage means based on the related information;
A water-based power generation output calculation device comprising: In the water flow system storage means, the time required for water to flow from the upstream power plant to the downstream power plant is stored as the time between power plants,
The water power generation according to claim 1, wherein the power generation amount calculation means calculates the power generation amount of each power station in time series based on the time between power stations stored in the water flow system storage means. Output calculation device. The tributary flow storage means stores the tidal state of the tributary as the related information,
The water-based power generation output calculation apparatus according to claim 1, wherein the power generation amount calculation unit calculates the power generation amount based on the input related information. A power system storage means for storing a power system indicating a connection state between the power plants;
A tidal current calculating means for calculating a power flow between the power plants based on the power generation amount of each power plant calculated by the power generation amount calculating means and the power system stored in the power system storage means. The water-system power generation output calculation device according to any one of claims 1 to 3, wherein Computer
A water flow system storage means for storing a water flow system indicating a flow of water flowing into each power plant in water power generation in which water flows from an upstream power plant to a downstream power plant;
A branch flow storage means for storing the amount of water flowing from the branch into the power plant in association with related information, which is information related to the amount of water;
A power generation amount calculating means for calculating a power generation amount of each power plant based on the water flow system stored in the water flow system storage means and the water amount from the tributary obtained from the branch flow storage means based on the related information,
Water-based power generation output calculation program to function as

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