JP2006039838A - Water type power generation operation plan preparation supporting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water type power generation operation plan preparation supporting apparatus for much more flexibly and appropriately preparing a power generation operation plan even under many constraint conditions or complicate various conditions. <P>SOLUTION: This automatic operation plan calculating device 2 searches operation data by an operation plan preparing means 2a under conditions set by an operation plan preparation condition setting means 2a based on reference date quantity. When the operation data are not satisfactory, the past result data are retrieved by a similar operation plan selecting device 3, and operation data are calculated based on the extracted result data. Furthermore, when the operation data are not satisfactory, either a power generation discharge amount curve or a dam water level curve displayed at a display device 8 is corrected by drag-and-drop by an operation plan correcting device 6. The other curve is automatically corrected by an operation curve automatic correcting means 2. Thus, a proper power generation operation plan is flexibly prepared which considers various conditions too complicated to be given as operation plan preparation conditions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water-based power generation operation plan creation support apparatus that supports a power generation operation plan creation operation for a hydroelectric power station group by a computer.

  Conventionally, as a power generation operation plan creation support device for a hydropower plant group by a computer, there is a hydropower plant group daily power generation planning method (see, for example, Patent Document 1). The automatic calculation algorithm used to create these power generation plans is performed by the contracted gradient method or the like, and a predetermined rule is used to resolve violations of constraints other than the dam water level (for example, non- Patent Document 1).

JP-A-5-91799 (paragraph numbers 0014 to 0016 and FIG. 1) Toru Katayama et al. Optimization Method for Daily Operation Plan of Connected Water System Material PE-89-187, Institute of Electrical Engineers of Japan, July 21, 1989, P139-148

  The contracted gradient method and the hydropower plant group-day power generation planning method are suitable for computer processing, and are considered to be very suitable for obtaining an optimal solution under certain conditions. However, it is the most difficult task to set the constraints (rules) given in the calculation. These rules include the River Law, generator operation restrictions (start-stop frequency, prohibition of short-time operation of generators, prohibition of night operation due to consideration for surrounding residents, etc.), dam characteristics, river flow delay, etc. can give. In planning the power generation operation plan, it is necessary to take into account complex conditions such as rainfall and flood conditions (drought and muddy water), weather, seasons (typhoons and thaws), and water utilization such as carp fishing and canoe competitions. Need to plan. However, it is difficult to process all information that changes every moment in a computer.

  Furthermore, there are limits to information collection means such as the accuracy of sensors that observe river conditions and the limit on the number of observation points. For this reason, it is difficult to construct a power generation operation plan creation support device that automatically rules out all constraints and complicated conditions on a computer by taking all current conditions into the computer. . Furthermore, in the conventional power generation operation plan creation support device, not all the conditions are considered on the computer, and it is constructed by breaking certain conditions, so the optimal solution desired by the operation plan creator is always obtained. Not necessarily.

For this reason, if the conventional generator operation plan and automatic calculation of the water level calculation for each reservoir do not provide the solution desired by the creator, manually change the input conditions and change the generator operation plan and the water level for each reservoir. In many cases, the calculation was converged by repeating the calculation re-calculation, or the automatic calculation was given up and the plan was created manually.
The present invention has been made to solve the above-mentioned problems, and is a water-based power generation operation plan that can create an appropriate power generation operation plan more flexibly even under many restrictions and complicated conditions. The purpose is to obtain a creation support device.

  The water power generation operation plan creation support device according to the present invention supports the creation of a power generation operation plan for a power plant provided in a water system in which a plurality of reservoirs are connected. It is provided with at least one of a plan calculation device and a similar operation plan selection device, and an operation plan correction device, and the reference daily amount setting means sets a reference daily amount that is a daily discharge water amount in each reservoir. The operation plan calculation device automatically calculates the generator operation plan of each power plant and the water level plan of each reservoir based on the standard daily amount, and the similar operation plan selection device selects the generator operation plan of each power plant and each reservoir. It has similar data retrieval means that retrieves the actual data satisfying a predetermined condition from the actual data of the water level plan and outputs it as extracted data. Based on the extracted data, the generator operation plan and The water level plan of each reservoir is automatically calculated, and the operation plan correction device is a display means for displaying the generator operation plan of each power plant and the water level plan of each reservoir on the screen, and the power generation of each displayed power plant. Automatic operation plan correction that automatically corrects one of the generator operation plan and the water level plan of each reservoir according to the correction operation means for correcting one of the machine operation plan and the water level plan of each reservoir Means.

  The present invention supports the creation of a power generation operation plan for a power plant provided in a water system including a plurality of reservoirs, and includes a reference daily amount setting means, an automatic operation plan calculation device, and a similar operation plan selection device. At least one and an operation plan correction device, the reference daily volume setting means sets a daily daily discharge amount of water in each reservoir, and the automatic operation plan calculation device is based on the reference daily volume. The power plant generator operation plan and the water level plan for each reservoir are automatically calculated, and the similar operation plan selection device uses a predetermined condition from the actual data of the power plant operation plan for each power plant and the water level plan for each reservoir. It has similar data retrieval means that retrieves actual data satisfying the requirements and outputs it as extracted data, and automatically calculates the generator operation plan for each power plant and the water level plan for each reservoir based on the extracted data. The operation plan correction device corrects one of the generator operation plan of each power plant and the water level plan of each reservoir on the screen and one of the displayed generator operation plan of each power plant and the water level plan of each reservoir. Since it has a correction operation means to operate and an operation plan automatic correction means for automatically correcting the other according to one correction operation of the generator operation plan of each power plant and the water level plan of each reservoir, many constraints Even under complicated conditions, an appropriate power generation operation plan can be created more flexibly.

Embodiment 1 FIG.
1 to 3 show an embodiment of the present invention. FIG. 1 is a block diagram showing the configuration of a water-based power generation operation plan creation support apparatus, and FIG. 2 shows the operation of the power generation operation plan creation support apparatus. It is a flowchart to show. FIG. 3 is an explanatory diagram for explaining the operation of the change point of the operation curve. In FIG. 1, the power generation operation plan creation support device includes a reference daily amount setting means 1, an automatic operation plan calculation device 2, a similar operation plan selection device 3, an operation plan correction device 6, and a display device 8. The automatic operation plan calculation device 2 includes an operation plan creation condition setting unit 2a, an operation data calculation unit 2b, and a next process instruction unit 2c. The similar operation plan selection device 3 includes search condition setting means 3a, similar data search means 3b, operation plan creation condition setting means 3c, operation data calculation means 3d, and next process instruction means 3e.

  The operation plan correction device 6 includes a change point operation means 6a as a correction operation means, an operation curve automatic correction means 6b as an operation plan automatic correction means, and an operation plan creation condition setting means 6c. The operation plan correction device 6 eliminates the water level violation and the constraint condition when the result obtained by the automatic operation plan calculation device 2 or the similar operation plan selection device 3 does not provide the optimum solution desired by the operation plan creator. It is for correcting the operation plan manually when it is not enough. The change point operation means 6a moves an arbitrary point on the operation curve (power generation discharge flow curve and dam water level curve) displayed on the screen of the display device 8 to an arbitrary position by dragging and dropping. The change point can be changed, deleted, or added.

  Next, a series of operations using the power generation operation plan creation support device will be described. In the following description, it is assumed that a next day power generation operation plan (hereinafter simply referred to as a power generation operation plan) is formulated. First, operation data is automatically created by an automatic operation plan calculation apparatus 2 that has been generally used. The details will be described with reference to the flowchart of FIG. Steps S11 to S20 described below are an automatic operation plan calculation flow F1 executed in the automatic operation plan calculation device 2, and S21 to S28 are similar operation plan selection support flows executed in the similar operation plan selection device 3. F2. S31 to S34 are an operation plan correction support flow F3 executed by the operation plan correction device 6.

  First, the reference daily amount setting means 1 sets a reference daily amount for each dam (in the present invention, it is used as appropriate without being particularly distinguished from the reservoir) in the power generation operation plan (step S11). Operation plan creation conditions such as the upper and lower limits of the amount of water used for power generation are also set in the operation plan creation condition setting means 2a of the automatic operation plan calculation device 2 in consideration of the influence of the season (typhoon and snowmelt) (step S12). In addition, the river law restrictions, generator operation restrictions (frequency of starting and stopping, prohibition of short-time operation of generators, prohibition of night operation due to consideration of surrounding residents, etc.), dam characteristics, river flow delay, etc. It is built into the logic (program) of the device and no setting is required here.

  The operation data calculation means 2b increases the water consumption per unit time of each power plant within the range of the standard daily amount of each reservoir, and increases the amount of water used during the daytime by reducing the nighttime and midnight. A calculation for automatically allocating the power generation value to the highest value is performed, and operation data (power generation discharge flow rate, gate discharge flow rate, dam water level, inflow amount to the dam, etc.) are calculated (step S13). This automatic allocation is calculated while monitoring the dam water level using the dam starting water level, the inflow from the upper dam, and the amount of water used. Next, it is determined whether the operation data satisfies the operation plan creation conditions set in the next process instruction means 2c (step S14).

  In step S14, if the operation data does not satisfy the condition, it is determined whether the number of repeated calculations exceeds the specified number (step S15). If not, the operation plan creation condition is changed (step S16), and the process proceeds to step S13. Returning, the calculation after step S14 is repeated, and if the operation data satisfies the operation plan creation condition (step S15), the process goes to step S17. If not satisfied, the calculation is repeated while changing the operation plan creation condition until the specified number of times is exceeded (steps S13 to S16). If the operation data satisfies the conditions in step S14, the obtained operation data is displayed as a power generation discharge flow curve and a dam water level curve (actually a broken line) (step S17). Then, the operation plan creator confirms the contents, and instructs the next process by the next process instruction means 2c. There are three types of instruction contents for the next process: work end, similar data search, and operation curve correction.

  In this step S17, the operation plan creator uses the operation data including the power generation discharge flow curve and the dam water level curve displayed on the display device 8 for carp fishing, canoe competition, water use, etc. that did not fall within the above operation plan creation conditions. In consideration of the complicated conditions, it is determined whether it is satisfactory, and if there is no problem, the operation data is adopted. In this case, “end” is set in the next process instruction means 2c. If the operation data is not satisfactory, the operation data is generated by the similar operation plan selection device 3 using the similar data. In this case, “similar data search” is set in the next process instruction means 2c. Further, when the operation curve is corrected by the direct operation plan correction device 6 without generating operation data based on similar data, “operation curve correction” is set in the next process instruction means 2c.

  If the next process is similar data search in step S19, the process goes to step S21 of the similar operation plan selection support flow F2. In step S19, if the next process is not similar data search, the process goes to step S20. In step S20, if the next process is an operation curve correction, the process goes to step S31 of the operation plan correction support flow F3. Otherwise, it is assumed that satisfactory operation data is obtained by automatic calculation by the automatic operation plan calculation device 2. finish. The above is the automatic operation plan calculation flow F1.

  The similar operation plan selection device 3 creates operation data based on similar data extracted by searching past similar data. First, a search condition is set in the search condition setting means 3a (step S21). As the search conditions, conditions necessary at the time of planning the operation, such as the past reference daily amount range of each dam, the season, the day of the week, the presence or absence of work, and the like are used. The similar data search means 3b searches the actual data (similar data) meeting the search conditions from the actual data of the past operation plan according to the conditions set in the search condition setting means 3a (step S22). In the search process when the reference daily amount range is used as a search condition, after calculating the error ratio between the set reference daily amount data and the past actual data, the comparison is performed in the priority order specified in advance for each condition. Then, select in ascending order of error ratio. Further, other search conditions specifically mean the following condition settings, for example. In other words, the season condition is that the previous month, the current month, and the next month are the search conditions. As for the day of the week, extraction conditions are weekdays, Saturdays, and Sundays. The work setting condition means that the search condition is the presence / absence of inspection work for the generator or the like.

In this case, the following method can be selected, and optimum performance data can be extracted from past performance data.
1. The generator operation plan of each power plant on the same day that matches or is similar to the standard daily amount is extracted for one day or multiple days for the whole water system, and one day is selected from among them and output as extracted data Batch extraction method to do.
2. The generator operation plan of each power plant on the same day that matches or resembles the standard daily volume is divided into multiple reservoir groups, and one or more days are extracted for each reservoir group. A block extraction method that selects one day for each reservoir group and outputs it as extracted data.
3. The generator operation plan of each power plant on the same day that matches or resembles the standard daily volume is extracted for one or more days for each reservoir, and one day for each reservoir is selected and extracted. A method of site-specific extraction to output as data.
4). Regardless of the reference daily amount, the generator operation plan of each power plant on an arbitrarily set date is output as extracted data.
Based on the extracted data obtained by these methods, a reference daily amount is set for the planning target date, and the operation data calculating means 3d of the similar operation plan selecting device 3 based on this reference daily amount (Embodiment 1 (FIG. 1 The operation data is the same as the operation data calculation means 2b of 1), and the operation data calculation means 2b may also be used), and operation data is created (step S23).

  Next, whether or not the operation data satisfies the operation plan creation condition set in the operation plan creation condition setting unit 3c in which the same conditions as the operation plan creation condition setting unit 2a of the automatic operation plan calculation apparatus 2 are set, specifically Specifically, the occurrence state of violation of water level and violation of constraint conditions is determined (step S24). If the operation data does not satisfy the operation plan creation condition, the search condition is changed (step S25), the process returns to step S22, the calculation after step S22 is repeated, and if the operation plan creation condition is satisfied (step S24), step S26 is performed. Go to. Then, the operation data, the power generation discharge flow rate curve, and the dam water level curve are displayed on the display device 8 (step S26). When changing the search conditions, the extraction conditions that do not affect the amount of water are automatically excluded one by one to automatically loosen the search conditions and automatically increase the hit rate in the extraction process. The automatically excluded conditions are displayed in accordance with the timing when the search results are presented. As a result, it is possible for the operation plan creator to eliminate the waste of trial and error when an optimum search result cannot be obtained.

  The operation plan creator takes into account the complex conditions such as carp fishing, canoe competition, water utilization, etc. that did not fit in the above operation plan preparation conditions, and the power generation discharge flow curve and dam water level curve displayed on the display device 8 The operational data is checked to determine whether it is satisfactory. If there is no problem, the operational data is adopted. In this case, “end” is set in the next process instruction means 3e. If the operation data is not satisfactory, “operation curve correction” is set in the next process instruction means 3e in order to correct the operation data (operation curve) by the operation plan correction device 6 (step S27). In step S28, it is determined whether the operation curve has been completed or the operation curve has been corrected. If the operation curve has been corrected, the operation plan correction support flow F3 is entered to correct the operation data (operation curve).

  The operation data already obtained is displayed on the display device 8 (step S31), and any one of the operation curves of either the power generation discharge flow curve or the dam water level curve displayed on the screen by the change point operation means 6a ( A change point is selected on the screen, and a drag-and-drop operation is directly performed (step S32). Then, in response to this, the operation curve automatic correction means 6b corrects the other operation curve by automatic calculation and automatically corrects the operation data (step S33). The operation data obtained as a result of the automatic correction is omitted in the flowchart, but whether or not it violates the operation plan creation conditions set in the operation plan creation condition setting means 6c, specifically, a water level violation or a constraint condition. A check is made as to whether or not there is a violation or the like, and the check result is displayed on the display device 8 (step S34).

  A specific example of the operation curve change point operation will be described with reference to FIG. At present, as shown in FIG. 3 (a), the obtained power generation discharge flow rate curve QA before correction has a pre-correction portion A on the left side, and increases the discharge flow at time T1, which is a change point, and time T2 It is assumed that the discharge flow rate is reduced. At this time, it is assumed that the dam water level curve WLA before correction which is the other operation curve is as shown in FIG. In addition, when the dam water level curve WLA before correction exceeds the full water level WLmax, it will overflow and must be avoided.

  In FIG. 3A, it is assumed that the operation plan creator moves the pre-correction part A to the post-correction part B by drag and drop in consideration of various conditions. This corresponds to moving the changing point at time 0. Then, the power generation discharge flow curve QA before correction is changed to the power generation discharge flow curve QB after correction. At this time, since the trapezoidal processing considering the time delay of the response of the generator is automatically performed, the corrected portion B in FIG. 3A is slightly different from the shoulder portion like the corrected curve C. Become. Further, the operation curve automatic correction means 6b operates to automatically correct the dam water level curve WLA before correction as the corrected dam water level curve WLB of FIG. 3 (b) and display it on the screen. Operational data is also corrected.

  In addition, the change point operation means 6a selects an arbitrary change point on the operation curve of the power generation discharge flow curve or the dam water level curve displayed on the screen as necessary, and deletes it. By doing so, the operation curve automatic correcting means 6b deletes the change point corresponding to the change point of the other operation curve that has been deleted, and performs automatic calculation. Further, by performing an operation of adding a change point at an arbitrary position on the both operation curves on the screen, the operation curve automatic correction means 6b changes the change point corresponding to the change point of the other operation curve that has been added. To perform automatic calculation. The result of each automatic calculation is displayed as an operation curve on the screen of the display device 8. Thereby, the correction of the generator operation plan of each power plant and the water level plan of each reservoir can be easily corrected visually while checking on the screen. In addition, the correction result of one operation curve can be easily reflected in the correction result of the other operation curve.

It is also possible to create an operation plan from the beginning using the similar operation plan selection device 3 without using the automatic operation plan calculation device 2, and the operation plan correction device 6 allows the automatic operation plan calculation device 2 or Without using the similar operation plan selection device 3, it is also possible to manually set a change point on the operation curve from the beginning and create an operation plan.
As described above, according to the present invention, it is possible to obtain a water-based power generation operation plan creation support apparatus that can create an appropriate power generation operation plan more flexibly even under many restrictions and complicated conditions.

  As described above, the present invention supports the creation of a power generation operation plan for a power plant provided in a water system including a plurality of reservoirs, and is similar in operation to a reference daily amount setting means and an automatic operation plan calculation device. At least one of the plan selection device and the operation plan correction device, the reference daily amount setting means sets the reference daily amount which is the daily discharge water amount in each reservoir, and the automatic operation plan calculation device is the reference Based on the daily amount, the generator operation plan for each power plant and the water level plan for each reservoir are automatically calculated, and the similar operation plan selection device is used to record the actual data of the generator operation plan for each power plant and the water level plan for each reservoir. It has similar data retrieval means that retrieves actual data satisfying a predetermined condition from the inside and outputs it as extracted data. Based on the extracted data, the generator operation plan for each power plant and the water level plan for each reservoir are automatically calculated. The operation plan correction device is a display means for displaying the generator operation plan for each power plant and the water level plan for each reservoir on the screen, and the generator operation plan for each power plant displayed and the water level for each reservoir. Since there is a correction operation means for correcting one of the plans, and an operation plan automatic correction means for automatically correcting the other according to one correction operation of the generator operation plan of each power plant and the water level plan of each reservoir. Even under many constraints and complicated conditions, an appropriate power generation operation plan can be created more flexibly.

  The similar data retrieval means extracts the generator operation plan of each power plant on the same day that matches or resembles the reference daily amount for one day or a plurality of days, and selects one day from among them. Therefore, the generator operation plan of each power plant and the water level plan of each reservoir can be automatically calculated based on appropriate performance data.

  Similar data search means divide the entire water system into a plurality of reservoir groups for the generator operation plan of each power plant on the same day that matches or is similar to the standard daily amount, and for one or more days for each reservoir group It is characterized in that it is extracted and one day is selected for each reservoir group and output as extracted data, so the generator operation plan and each reservoir of each power plant based on appropriate performance data The water level plan can be automatically calculated.

  The similar data search means extracts the generator operation plan of each power plant on the same day that matches or resembles the reference daily amount for each reservoir of the water system for one day or multiple days, and for each reservoir from among them Since one day is selected and output as extracted data, the generator operation plan of each power plant and the water level plan of each reservoir can be automatically calculated based on appropriate performance data.

  In the operation plan correction device, the display means displays the generator operation plan of each power plant and the water level plan of each reservoir as operation curves on the screen, and the correction operation means displays the generator operation of each displayed power plant. Since the design curve or the water level plan curve of each reservoir is corrected on the screen, the generator operation plan of each power plant and the water level plan of each reservoir can be easily corrected.

It is a block diagram which shows the structure of the water-system electric power generation operation plan creation assistance apparatus which is one Embodiment of this invention. It is a flowchart which shows operation | movement of a power generation operation plan creation assistance apparatus. It is explanatory drawing for demonstrating operation of the change point of an operation curve.

Explanation of symbols

1 standard daily amount setting means, 2 automatic operation plan calculation device,
2a Operation plan creation condition setting means, 2b Operation data calculation means, 2c Next process instruction means,
3 similar operation plan selection device, 3a search condition setting means, 3b similar data search means,
3c Operation plan creation condition setting means, 3d operation data calculation means, 3e next process instruction means,
6 operation plan correction device, 6a change point operation means, 6b operation curve automatic correction means,
6c Operation plan creation condition setting means, 8 display device.

Claims (5)

Supports the creation of a power generation operation plan for a power plant provided in a water system including a plurality of reservoirs, and includes a reference daily amount setting means, at least one of an automatic operation plan calculation device and a similar operation plan selection device, With an operation plan correction device,
The reference daily amount setting means sets a reference daily amount that is a daily discharge water amount in each reservoir.
The automatic operation plan calculation device automatically calculates the generator operation plan of each power plant and the water level plan of each reservoir based on the reference daily amount,
The similar operation plan selecting device includes similar data search means for searching for actual data satisfying a predetermined condition from the actual data of the generator operation plan of each power plant and the water level plan of each reservoir, and outputting the result data as extracted data. Having automatically calculate the generator operation plan of each power plant and the water level plan of each reservoir based on the extracted data,
The operation plan correcting device includes display means for displaying the generator operation plan for each power plant and the water level plan for each reservoir on the screen, the generator operation plan for each power plant displayed, and the water level plan for each reservoir. Correction operation means for correcting one of the above and an operation plan automatic correction means for automatically correcting the other according to one correction operation of the generator operation plan of each power plant and the water level plan of each reservoir. ,
Water-based power generation operation plan creation support device. The similar data search means extracts the generator operation plan of each power plant on the same day that matches or is similar to the reference daily amount for one day or a plurality of days in the whole water system, and extracts one day from among them. The water-based power generation operation plan creation support apparatus according to claim 1, which is selected and output as the extracted data. The similar data search means divides the entire water system into a plurality of reservoir groups for the generator operation plan of each power plant on the same day that matches or is similar to the reference daily amount, and makes one day for each of the reservoir groups. Alternatively, the water-based power generation operation plan creation support apparatus according to claim 1, wherein a portion for a plurality of days is extracted and one day is selected for each of the reservoir groups and output as extracted data. The similar data search means extracts a generator operation plan of each power plant on the same day that matches or is similar to the reference daily amount for each reservoir of the water system for one day or a plurality of days, The water-based power generation operation plan creation support apparatus according to claim 1, wherein one day's worth is selected for each reservoir and output as extracted data. In the operation plan correction device, the display means displays the generator operation plan of each power plant and the water level plan of each reservoir as operation curves on the screen, and the correction operation means displays each of the displayed 2. The water-system power generation operation plan creation support apparatus according to claim 1, wherein the generator operation plan curve of the power plant or the water level plan curve of each reservoir is corrected on the screen.

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