TWI653544B - Operation plan preparation device, operation plan formulation method and memory medium - Google Patents

Abstract

An operation plan planning device according to an embodiment of the present invention includes a first calculation unit, a second calculation unit, and a third calculation unit, and formulates an operation plan of the generator related to the amount of power generation. The first calculation unit calculates the dummy output limit based on at least the output change rate and the load hold time. The second calculation unit calculates the power generation amount limit in the above-described period based on the initial value of the output power and the initial value of the increase/decrease direction in the dummy output limit and the period, and the initial value of the load remaining time in the period value. The third power generation amount calculation unit calculates the power generation amount in the above-described period by solving the optimization problem having at least the constraint condition related to the power generation amount limit value.

Description

Operation plan preparation device, operation plan formulation method and memory medium

Embodiments of the present invention relate to an operation plan drawing device, an operation plan drafting method, and a memory medium.

For the power generation department of general electric workers, etc., develop one of the important operations of the operation plan of the generator. The operational plan is developed in a manner that is based on the amount of power that the generator output corresponds to the predicted circuit demand during a particular period. However, when the output power of the generator is changed, the output change rate and the load holding time are restricted. The rate of change of output is the degree of change in the output power of the generator. The load holding time is a time when the output power value of the generator becomes a specific value, and the load on the generator is maintained such that the output power value continues. Therefore, the output power of the generator cannot be changed until the load holding time elapses. Therefore, there is a problem that an accurate operation plan cannot be drawn without considering these two constraints.

An embodiment of the present invention is to formulate an operation plan of a generator that takes into consideration the output change rate and the load hold time. An operation plan planning device according to an embodiment of the present invention includes a dummy output limit calculation unit, a power generation amount limit value calculation unit, and a power generation amount calculation unit, and an operation plan of the generator related to the power generation amount of the generator is prepared. The dummy output limit calculation unit calculates the dummy output limit of the generator based on at least the output change rate of the generator and the load holding time. The power generation amount limit value calculation unit is based on the initial value of the output power of the generator in the dummy output limit and the period, and an initial value of the increase/decrease direction, and an initial value of the load remaining time of the generator in the period Calculating the power generation limit value of the above-mentioned generator in the above period. The power generation amount calculation unit calculates the power generation amount of the power generator in the above-described period by solving the optimization problem of the constraint condition including at least the power generation amount limit value. Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment of the Invention) FIG. 1 is a block diagram showing an example of a schematic configuration of an operation plan drawing device according to an embodiment of the present invention. The operation plan planning device 1 shown in FIG. 1 includes a memory unit (acquisition unit) 11, a dummy output limit calculation unit 12, a power generation amount limit value calculation unit 13, a power generation amount calculation unit 14, and a next period initial value calculation unit 15, And the operation plan drafting unit 16. The operation plan preparation device 1 formulates an operation plan of the generator based on a constraint condition (conduit) such as a predicted power demand and an objective function indicating a specific purpose. The proposed operational plan is related to the amount of power generated by the generator during a specific time period. Further, the calculated power generation amount considers at least two constraints of the output change rate of the generator and the load holding time. The time period is part of the period in which the operational plan is drawn up. The time period may also be based on the period during which the amount of power generated by the generator is required to be consistent with the expected power demand. For example, when considering a 30-minute supply/demand balance scenario, the time period can be set to 30 minutes. Furthermore, the amount of power generation can be the amount of power generated by one generator, or the sum of the power generations of a plurality of generators. The overall period of the proposed operational plan consists of a continuous number of time periods. That is, the proposed operational plan becomes a collection of power generation in each time period. The length of the time period and the overall period of the proposed operational plan is not particularly limited. In addition, the type of the generator is not particularly limited as long as it has the above-described output change rate and load holding time. Can be fire, water, atomic power generators. It can also be a generator of natural energy such as wind, solar, geothermal, and bioenergy. It can also be a generator such as hydrogen power. Moreover, the types of the generators may be the same or different. The components of the operation plan preparation device 1 will be described. The memory unit (acquisition unit) 11 acquires and memorizes the information for the preparation of the operation plan as data. The information used for the operational plan has information related to the objective function and information related to the constraints. For example, in the case of reducing the operating cost indicating the cost of running the generator, the operating cost per unit amount of electric power of the generator is stored in the memory unit 11. Further, for example, when the operation cost is calculated based on the cost of an item such as fuel used for each generator, information on the cost of the item may be stored in the storage unit 11. Further, as the information on the constraint conditions, the predicted power demand during the period of the planned operation plan is stored in the memory unit 11. The power demand is the power provided by a plurality of generators, and thus the power information that each generator can output is also required. Therefore, information related to the operation of the generator is also stored in the memory unit 11. The data indicating the information related to the operation of the generator memorized by the memory unit 11 is described as the generator operation data. The output change rate and load hold time of the generator are also included in the generator operation data. Furthermore, the operation plan planning device 1 may have a plurality of memory units. That is, the memory unit 11 can be configured by a plurality of memory units. For example, there may be a plurality of memory sections in the operation plan drawing device 1, and the types of information stored in the memory sections are different. The information stored in the memory unit 11 can be memorized in advance by the user in the memory unit 11, or can be obtained by the operation plan drawing device 1 from an external device or system. As shown in the example of FIG. 1, the operation plan planning device 1 can also obtain the power demand from the power demand forecasting system 2, and obtain the generator operation data from the generator operation data acquisition system 3, and obtain the use from the input/output interface 4. Information about the operating conditions of the generator input. The data indicating the information related to the operating conditions of the generator memorized by the memory unit 11 is described as the operating condition data. The information shown in the operating condition data is, for example, information that the maintenance period of the generator and the cost of the fuel are equal to the value of the period during which the operational plan is planned to be changed. Furthermore, as shown in the example of FIG. 1, when the information is acquired from an external device or system, the operation planning device 1 is directly or indirectly connected to the external device or system through a communication interface or a device interface. Ability to send and receive data. The information required for transmission and reception of data such as an IP (Internet Protocol) address can be stored in the memory unit 11 in advance. Further, the memory unit 11 can also acquire and memorize the result of the processing of each component of the operation plan drawing device 1. For example, the memory unit 11 can also memorize the planned operation plan and the like. Further, the information stored in the memory unit 11 can be output to the input/output interface 4 or can be sent to an external device or system. The dummy output limit calculation unit 12 calculates the virtual output limit of the generator based on the generator operation data. The generator operation data includes at least information related to the output change rate of the generator and the load holding time. The dummy output limit includes a dummy output upper limit and a dummy output lower limit. The upper limit of the dummy output indicates a time-series transition of the upper limit of the output power when the generator assumes that the output power is increased. The dummy output lower limit represents a time series transition of the lower limit of the output power when the generator is assumed to reduce the output power. Furthermore, when one of the dummy output upper limit and the dummy output lower limit is not considered, the unconsidered one may not be included in the dummy output limit. Figure 2 is a diagram illustrating the operation data of the generator. Fig. 2(A) is a view showing an example of information relating to the output change rate included in the generator operation data. The unit ID (Identification), direction, output lower limit, output upper limit, and output change rate are shown in the table shown in FIG. 2(A). The unit ID represents the identification number of the generator. The direction indicates the direction in which the output power is increased or decreased. "Rise" means that the output power is increasing. "Descent" means that the output power is continuously decreasing. The output lower limit and the output upper limit respectively indicate the lower limit value and the upper limit value of the range of the output power. The output change rate indicates the degree of change in the output power of the generator in the range between the output lower limit and the output upper limit. For example, the second column in FIG. 2(A) indicates that the output power of the output of the generator having the unit ID of 1 rises in the range of 100 MW (MW) to 200 MW, and the output change rate of the output power is 5 MW / min (MW / min). Fig. 2(B) is a view showing an example of information relating to the load holding time which is one of the generator operation data. The cell ID, direction, output, and load hold time are shown in the table shown in Fig. 2(B). The output system represents the output power value (the magnitude of the output power) corresponding to the load holding time. The load holding time is expressed when the output power of the generator increases to become the value indicated by the output and is to be increased, or the output power is reduced to become the value indicated by the output, and the output power value is continued (continue Keep it fixed). For example, the second column in the upper part of FIG. 2(B) indicates that the output power of the generator having the unit ID of 1 is increased and the load holding time at the time of reaching 200 MW is 30 minutes. That is, it means that the output power of the generator whose unit ID is 1 rises and reaches 200 MW and then rises, and the output power remains 200 MW in 30 minutes. Figure 3 is a diagram illustrating the dummy output limit. Fig. 3(A) is a diagram showing the upper limit of the dummy output. Fig. 3(B) is a diagram showing the lower limit of the dummy output. 3(A) and (B), the horizontal axis represents the elapsed time, and the vertical axis represents the output power. As shown in FIG. 3, the graph of the dummy output limit satisfies the output change rate and the load hold time shown in FIG. 2. For example, in the graph of the upper limit of the dummy output of Fig. 3(A), in the range where the output lower limit is 100 MW and the output upper limit is 200 MW, as shown in the second column of Fig. 2(A), the output is shown. The slope of the rate of change graph is 5. Thus, it takes 20 minutes to increase the output power from 100 MW to 200 MW. Further, as shown in the second column of the upper part of Fig. 2(B), the load holding time when the output power is increased to 200 MW is 30 minutes, so in the graph of the upper limit of the dummy output of Fig. 3(A), at 20 Between 50 points, the output power is fixed at 200 MW. Furthermore, the period in which the output power is fixed by the load holding time is described as the load holding section. Furthermore, in FIG. 3(A), it is assumed that the maximum output power is 500 MW, and thus the output power does not rise after the output power becomes 500 MW. The graph of the virtual output lower limit also satisfies the output change rate and load holding time of the generator operation data, similarly to the graph of the dummy output upper limit. For example, in the graph of the virtual output lower limit of Fig. 3(B), in the range where the output lower limit is 200 MW and the output upper limit is 500 MW, as shown in the fifth column of Fig. 2(A), the output is shown. The slope of the graph of rate of change is 10. Thus, it takes 30 minutes to reduce the output power from 500 MW to 200 MW. Further, as shown in the fourth column of the figure (B), the load holding time when the output power is reduced to 200 MW is 50 minutes, so in the graph of the virtual output lower limit of FIG. 3(A), at 30 Between 80 points, the output power is fixed at 200 MW. Furthermore, in FIG. 3(B), it is assumed that the minimum output power is 100 MW, and thus the output power does not decrease after the output power becomes 100 MW. The power generation amount limit value calculation unit 13 calculates the initial value of the magnitude of the output power of the generator in the period of the dummy output limit, the initial value of the increase/decrease direction, and the initial value of the remaining time of the load of the generator in the period, and calculates the period of time. The generator's power generation limit value. The dummy output limit includes at least a dummy output upper limit or a dummy output lower limit, and thus the calculated power generation limit value includes at least a power generation upper limit value or a lower limit value. The remaining time of the load remains the remaining time during which the output power value continues, meaning the time before the output power changes. The load remaining time is calculated by subtracting the time (duration) of the output power value from the load holding time corresponding to the output power value. The initial value of the remaining time of the load of the time period means that the load at the time of the start of the time period remains the remaining time. For example, when the power value is continuously outputted at the end of the first time period, in the second time period, the remaining time from the load holding time minus the duration of the output power value in the previous period becomes the second time period. The output power value lasts for a long time. Therefore, the remaining time becomes the initial value of the remaining time of the load hold of the second period. Fig. 4 is a view showing an example of calculation of a power generation amount limit value. In the description of FIG. 4, the initial value of the output power of the time period is assumed to be 300 MW, and the initial value of the increase/decrease direction is "rise" (increase), and the initial value of the period of the load remaining time is designated as 0. Fig. 4(A) is a view showing an example of calculating the upper limit value of the power generation amount using the upper limit of the dummy output. When the initial value of the remaining time of the load hold is specified as 0, the output power can be immediately changed, so that the output power becomes the specified value from the time point to the end of the period, and the horizontal axis and the upper limit of the dummy output are plotted. The area sandwiched is the upper limit of the amount of power generation in the period. For example, in Fig. 4(A), when the time is 60 minutes, the output power becomes 300 MW. Therefore, in the case where the length of the period is 30 minutes, the area sandwiched by the graph of the horizontal axis between 60 minutes and 90 minutes and the upper limit of the dummy output becomes the upper limit of the power generation amount obtained. Therefore, the calculated upper limit of power generation is 192 MWh (MWh). Fig. 4(B) is a view showing an example of calculating the lower limit value of the power generation amount using the dummy output lower limit. In Fig. 4(B), when the time is 20 minutes, the output power becomes 300 MW. Therefore, in the case where the length of the period is 30 minutes, the area sandwiched by the graph of the horizontal axis between 20 minutes and 50 minutes and the lower limit of the dummy output becomes the lower limit value of the power generation amount obtained. Therefore, the calculated lower limit of power generation is 108 MWh. Fig. 5 is a view showing another example of calculation of the power generation amount limit value. In Fig. 4, the output power is one of the specified values, but in Fig. 5, the specified output power is the output power of the load holding section, that is, when the output power becomes the designated value. Explain the situation across fixed periods. In the description of Fig. 5, it is assumed that the initial value of the output power is 200 MW, the initial value of the increase and decrease direction is "rise", and the initial value of the remaining time of the load is designated as 20 points. When the output power becomes the specified value at the time point and the fixed period, the time before the output power changes from the specified initial value coincides with the initial value of the remaining time of the load retention becomes the starting power generation limit value. The time of the calculation. The reason for this is that the generator can change the output power as long as the remaining time remains the same as the load. For example, in Fig. 5(A), the output power is 200 MW at a time of 20 minutes to 50 minutes. However, since the remaining time of the load retention is specified as 20 points, the time before the output power is changed from 200 MW, that is, 50 minutes, and the time when the specified load remains for 20 minutes, that is, 30 minutes becomes the power generation limit value. The starting point of the calculation. Therefore, when the length of the period is 30 minutes, the area sandwiched by the graph of the horizontal axis and the upper limit of the dummy output between the point 30 and the end point of the period is the upper limit of the power generation amount obtained. Therefore, the calculated upper limit of the amount of power generation is 108 MWh. For example, in Fig. 5(B), the output power is 200 MW when the time is between 30 minutes and 80 minutes. However, since the initial value of the increase/decrease direction is not "decreased" (reduced), even if the load remaining time is specified as 20 points, the point at which the output power changes from 200 MW, that is, 80 points, becomes the calculation of the power generation limit value. Start at the beginning. Therefore, in the case where the length of the period is 30 minutes, the area sandwiched by the graph of the horizontal axis between the beginning of the period from the point 80 and the end point of 110 is the lower limit of the power generation amount obtained. Therefore, the calculated lower limit of the power generation amount is approximately 67 MWh. In this way, the power generation amount limit value calculation unit 13 calculates the power generation amount upper limit value based on the initial value of the magnitude of the output power in the time period, the initial value of the increase/decrease direction, and the initial value of the load hold remaining time of the time period, and the virtual output upper limit is used. The lower limit of the power generation amount is calculated using the dummy output lower limit. In addition, the initial value of the magnitude of the output power in the first period of the processing by the power generation amount limit value calculation unit 13 and the initial value of the increase/decrease direction and the initial value of the load retention remaining time are stored in advance in the memory unit 11. In addition, the initial value of the magnitude of the output power and the initial value of the increase/decrease direction and the initial value of the load retention remaining time in the period after the first period are calculated by the next period initial value calculation unit 15. The details will be described later. The power generation amount calculation unit 14 calculates an appropriate power generation amount by solving the optimization problem caused by the objective function and the constraint condition given. The amount of power generation is calculated for each time period. The constraints on the optimization problem of the required solution include at least the constraints related to the power generation limit value. The following equation represents an example of an objective function and a constraint condition in a certain period of time. [Number 1] The formula (1) of the number 1 represents the objective function. The objective function means a situation for reducing the sum of the operating costs of a plurality of generators. i is an integer of 1 or more and 1 (l is a positive integer), and represents an identification number (unit ID) of the generator. l indicates the total number of generators that are intended to be the target of the operational plan. x _i is a continuous variable representing the amount of power generated by the generator i. u _i is a discrete variable representing the operating state of the generator i. The constraint condition indicating the value that u _i can take is shown in the formula (5). In the formula (5), u _i takes a value of 0 or 1. Therefore, the operating state of the generator i is two types. For example, the operation state may be set to two types of operation and stop. When the operation state of the generator i is operation, u _i is 1, and when the operation state is stopped, u _i is 0. COST _i (x _i , u _i ) is a function of the operating cost when the amount of power generated by the generator i is x _i and the state of the generator i is u _i . Equations (2) to (5) represent constraints. Equation (2) is a constraint condition related to the power generation limit value of the generator, and indicates a range in which the power generation amount x _i can be obtained. LOWER _i indicates the power generation amount lower limit value of the generator i calculated by the power generation amount limit value calculation unit 13. UPPER _i indicates the upper limit value of the power generation amount of the generator i calculated by the power generation amount limit value calculation unit 13. As shown in the formula (2), the optimization problem has at least a constraint condition related to the power generation limit value. G of the formula (3) represents an executable region constituted by other constraints. For example, operating conditions such as power demand and maintenance are used as constraints for calculating G. Therefore, the equation (3) represents a constraint condition in which the power generation amount x _i and the operational state u _i can be combined. R+ of the formula (4) represents a set of non-negative real numbers. Therefore, the equation (4) represents a constraint condition that the amount of power generation x _{i is a} non-negative real number. Furthermore, the optimization problem as described above can be handled by a solver or the like. Therefore, the power generation amount calculation unit 14 can be realized using a resolver. For example, when the objective function and the constraint expression are expressed in a lower order such as one or two-order expression, a general-purpose solver can also be used. Also, the solver can be newly developed. Furthermore, the operating cost may be the cost of the operation of the generator, and may include the cost of the item, person, or service required for the operation of the generator. The items required for the operation of the generator may be a power source of a generator such as a fuel, or may be a cooling water or a catalyst other than the power source. The power source is also not particularly limited. For example, it can be fossil fuels, wood fuels, nuclear fuels. It can also be stored in reservoirs, etc. It can also be a chemical substance such as methylcyclohexane used for hydrogen power generation. Also, the cost incurred by operating the generator may be included. For example, the cost associated with limestone or liquid ammonia used to remove chemical substances contained in the exhaust gas generated by power generation may be included. Furthermore, when the generator is stopped, the operating cost will also be incurred due to the above costs. Furthermore, although the above objective function is the sum of the operating costs of the respective generators, it may be the sum of the operating costs of a part of the specific generators. For example, generators belonging to a particular group may also be considered, regardless of the operating costs of generators that are not subordinate to a particular group. Further, for example, by multiplying the operating costs of the respective generators by the weighting factors and not counting the operating costs of the respective generators, the degree of importance between the generators can be made different. In the above, it is indicated that there is an objective function for the purpose of reducing the running cost, but an objective function based on other costs can also be formulated, and an objective function based on a plurality of costs can also be formulated. The next period initial value calculation unit 15 calculates the output power value of the generator at the end of the period at which the power generation amount is calculated and the duration of the output power value based on the power generation amount of the generator and the dummy output limit. The next period initial value calculation unit 15 calculates an initial value and an increase/decrease direction of the output power of the generator in the next period of the period in which the power generation amount is calculated based on the output power value and the duration. The initial value and the initial value of the remaining time of the load. FIG. 6 is a view for explaining processing of the next period initial value calculation unit 15. The broken line in FIG. 6 indicates the dummy output line calculated by the next period initial value calculation unit 15. The dummy output line represents the time series of the dummy output. The virtual output is the virtual output power of the generator calculated by the next period initial value calculation unit 15 so that the power generation amount of the generator in the period coincides with the power generation amount calculated by the power generation amount calculation unit 14. The area sandwiched between the horizontal axis and the dummy output line during the period becomes the amount of power generated by the generator during the period. The dummy output line is calculated based on the amount of power generated by the generator and the limit of the dummy output. First, the next period initial value calculation unit 15 compares the amount of power generation when the output power value in the point at the start of the period is assumed to the time point when the period ends, and the amount of power generation calculated by the power generation amount calculation unit 14. In the case where the power generation amount in the case of the assumption is smaller than the power generation amount calculated by the power generation amount calculation unit 14, the output power must be increased, and the dummy output line is calculated using the dummy output upper limit. When the amount of power generation in the case of the assumption is larger than the amount of power generation calculated by the power generation amount calculation unit 14, the output power must be decreased. Therefore, the dummy output line is calculated using the dummy output lower limit. For example, if the amount of power generation in the period is calculated to be 172 MWh, the next period initial value calculation unit 15 confirms the output power value at the start of the period. If the output power value at the start point is 300 MW as shown in Fig. 6, when the output power value continues, the power generation in the 30-minute period becomes 150 MWh, which is less than the power generation amount of 172 MWh. Therefore, the output power must be increased. Therefore, the next period initial value calculation unit 15 calculates the dummy output line using the dummy output upper limit. The dummy output line can be calculated as long as it satisfies the output change rate and the dummy output limit. That is, the slope of the dummy output line is consistent with the output change rate, and the dummy output line is included in the range of the dummy output upper limit and the dummy output lower limit. For example, the dummy output line can also be calculated by moving the dummy output upper limit or the dummy output lower limit in parallel along the time axis. In the case of this method, the graph of the dummy output upper limit and the dummy output lower limit is calculated based on the output change rate, and thus the slope of the dummy output line is also consistent with the output change rate. Moreover, due to the parallel movement, the dummy output line is included in the range of the dummy output upper limit and the dummy output lower limit. The next period initial value calculation unit 15 calculates an initial value of the magnitude of the output power in the next period, an initial value of the increase and decrease direction, and an initial value of the load hold time based on the calculated dummy output line. For example, if the dummy output line in the first period is calculated as shown in FIG. 6, the value of the dummy output line at the end of the first period is 400 MW, so the next period initial value calculation unit 15 calculates the next period. The initial value of the output power in the second period is 400 MW. Further, if the output power value is 400 MW at the time of 22 minutes in the first period, the output power value continues to be 400 MW in the 8 minutes before the next period. As shown in Fig. 2(B), when the increase/decrease direction is ascending, the load holding time when the output power becomes 400 MW is 30 minutes, and thus the load remaining time is 22 minutes. Therefore, the next period initial value calculation unit 15 calculates the initial value of the load remaining time in the next period of 22 minutes. The initial value of the parameter in the next time period calculated by the next period initial value calculation unit 15 is used for the power generation amount limit value calculation unit 13 to calculate the power generation amount limit value in the next period. In the next period, the processing by the power generation amount calculation unit 14 and the next period initial value calculation unit 15 is performed again. Thus, by calculating the amount of power generation in a certain period of time, the initial value in the next period can be determined, and the amount of power generation in the next period can be calculated. The operation plan preparation unit 16 collects the power generation amount in each time period calculated by the power generation amount calculation unit 14 to prepare an operation plan. Fig. 7 is a view showing an example of an operation plan. In the table shown in FIG. 7, the start date and time, the period ID, the unit ID, and the amount of power generation are shown. The period ID indicates the identification number of the period. The start date and time indicates the date and time at the start of the period indicated by the period ID. The amount of power generation represents the amount of power generation in the period indicated by the period ID of the generator indicated by the unit ID. In this way, the operation plan prepared by the operation plan drawing unit 16 becomes an operation plan related to the amount of power generation of the generator in the period. In addition, in the proposed operation plan, in addition to the amount of power generation, other processing results such as the upper limit of the amount of power generation may be included. Next, the processing flow performed by each constituent element will be described. Fig. 8 is a view showing an example of a schematic flow chart of the overall processing of the operation plan drawing device 1 of the present embodiment. The storage unit 11 acquires and memorizes information necessary for the preparation of the operation plan (S101). After the information required for the memory is stored, the dummy output limit calculation unit 12 calculates the dummy output limit based on the information on the output change rate and the load hold time memorized by the storage unit 11 (S102). The power generation amount limit value calculation unit 13 calculates the power generation amount limit value based on the initial value of the output power and the initial value of the increase/decrease direction and the initial value of the load hold time for the time period in the dummy output limit and the time period (S103). The power generation amount calculation unit 14 calculates the power generation amount for the time period by solving the optimization problem that the calculated power generation amount limit value is one of the constraint conditions (S104). Further, the next period initial value calculation unit 15 calculates the initial value of the output power of the next period, the initial value of the increase and decrease direction, and the load holding time by calculating the dummy output line that satisfies the calculated power generation amount. The initial value (S105). Each of the calculated initial values is used for calculation processing of the power generation amount limit value in the next period of the power generation amount limit value calculation unit 13. The processes of S103 to S105 are repeated, and the respective power generation amounts are calculated for the entire time period. The operation plan preparation unit 16 collects the calculated power generation amount for each period of time to prepare an operation plan (S106). The planned operation plan is sent to the memory unit 11, and the memory unit 11 memorizes the acquired operation plan (S107) and ends the process. Furthermore, this flowchart is an example, and the processing order and the like are not limited as long as necessary processing results are obtained. For example, the processing of S106 is performed after the power generation amount is calculated in the entire time period. However, in parallel with the processing of S105, the operation plan planning unit 16 may add a new time period to the table indicating the operation plan every time the processing of S106 is performed. The amount of electricity generated, while updating the operating plan. Further, the processing result of each processing may be sequentially memorized in the storage unit 11, and each constituent element may refer to the storage unit 11 to obtain a processing result. As described above, according to the present embodiment, the power generation amount limit value in each period is calculated using the dummy output limit based on the output change rate and the load holding time. Based on the power generation limit value, the amount of power generation related to the operation plan is calculated, so that the operation plan of the generator in consideration of the output change rate and the load hold time can be prepared. Furthermore, the above-described embodiment is an example, and a part of the components of the above-described embodiment may be located outside, and the operation plan planning device 1 may be composed of a plurality of devices capable of transferring data by communication or electrical signals. In other words, the plan planning device 1 can also be a system composed of a plurality of devices. For example, although the above embodiment has the dummy output limit calculation unit 12, the dummy output limit calculation unit 12 may be located in an external device. In this case, the memory unit 11 can obtain the dummy output limit from the external device and transmit it to the power generation amount limit value calculation unit 13. Further, each of the processes in the above-described embodiments can be realized by software (program). Therefore, the above-described embodiment can be realized by, for example, using a general-purpose computer device as a basic hardware and executing a program by a processor such as a central processing unit (CPU: Central Processing Unit) mounted on a computer device. Fig. 9 is a block diagram showing an example of a hardware configuration of the operation plan drawing device 1 of the embodiment. The operation plan planning device 1 includes a processor 51, a main memory device 52, an auxiliary memory device 53, a network interface 54, and a device interface 55, and can be realized as a computer device 5 connected to the bus bar 56. Further, the operation plan planning device 1 may be provided with a general-purpose input device and an output device to realize the input/output interface 4. The operation plan drawing device 1 of the present embodiment can be realized by pre-installing a program executed by each device on the computer device 5, or by storing the program on a CD-ROM (Compact Disc Read-Only Memory: Read Only) It is realized by a memory medium such as a disc or distributed via a network and suitably mounted on the computer device 5. The processor 51 is an electronic circuit including a control device of the computer and an arithmetic device. The processor 51 performs arithmetic processing based on data or a program input from each device or the like configured inside the computer device 5, and outputs the calculation result or control signal to each device or the like. Specifically, the processor 51 executes an OS (Operating System) or an application of the computer device 5, and controls each device constituting the computer device 5. The processor 51 is not particularly limited as long as the above processing can be performed. The processor 51 may be, for example, a general purpose target processor, a central processing unit (CPU), a microprocessor, a digital signal processing (DSP: Digital Signal Processing), a controller, a microcontroller, a state machine, or the like. Further, the processor 51 may be an integrated circuit for a specific application, a Field-Programmable Gate Array (FPGA), or a Programmable Logic Device (PLD). Further, the processor 51 may be constituted by a plurality of processing devices. For example, it may be a combination of a DSP and a microprocessor, or may be one or more microprocessors that cooperate with a DSP core. The main memory device 52 is a memory device that executes commands and various data and the like, and the information stored in the main memory device 52 is directly read by the processor 51. The auxiliary memory device 53 is a memory device other than the main memory device 52. Furthermore, the memory device is any electronic component that can store electronic information. As the main memory device 52, RAM (Random Access Memory), DRAM (Dynamic Random Acces Memory), and SRAM (Static Random Access Memory) are mainly used. The volatile memory used for temporarily storing information, but in the embodiment of the present invention, the main memory device 52 is not limited to the volatile memory. The memory device used as the main memory device 52 and the auxiliary memory device 53 may be a volatile memory or a non-volatile memory. Non-volatile memory with Programmable Read-Only Memory (PROM), Erasable Programmable Read Only Memory (EPROM), and electronically erasable programmable Non-Volatile Random Access Memory (NVRAM), Flash Memory, MRAM (Magnetic Random Access Memory) Take memory) and so on. Further, a magnetic gas or optical data storage device may be used as the auxiliary memory device 53. As the data storage device, a disk such as a video disk, a DVD such as a DVD (Digital Versatile Disk), a flash memory such as a USB (Universal Serial Bus), and a magnetic tape can be used. Moreover, if the processor 51 reads or writes information directly or indirectly to the main memory device 52 or the auxiliary memory device 53, or both, the memory device can be in electrical communication with the processor. Furthermore, the main memory device 52 can also be integrated into the processor. In this case, the main memory device 52 can also be in electrical communication with the processor. The network interface 54 is used to connect to the interface of the communication network by wireless or by wire. The network interface 54 can be used as long as it is suitable for existing communication specifications. Here, only one network interface 54 is shown, but a plurality of network interfaces 54 may be mounted. An output result or the like can be transmitted to the external device 7 communicatively connected via the communication network 6 via the network interface 54. The external device 7 can be an external memory medium, a display device, or a storage device such as a database. The device interface 55 is an interface such as a USB connected to an external memory medium that records an output result or the like. The external memory medium can be HDD (Hard Disk Drive), CD-R (Compact Disc-Recordable), CD-RW (Compact Disc-Rewritable: rewritable disc), DVD-RAM ( Digital Versatile Disc-Random Access Memory: Any recording medium such as DVD-R (DVD-Recordable) or SAN (Storage Area Network). It can also be connected to a storage device or the like via the device interface 55. Further, part or all of part or all of the computer device 5, that is, one or all of the operation planning device 1, may be constituted by a dedicated electronic circuit (that is, a hard body) to which a semiconductor integrated circuit such as the program 51 is mounted. The dedicated hardware may be configured by a combination with a memory device such as a RAM or a ROM (Read Only Memory). Furthermore, in Fig. 9, one computer device is shown, but software can be installed in a plurality of computer devices. The processing result can also be calculated by causing the plurality of computer devices to perform processing of one of different parts of the software. Although specific embodiments have been described, the embodiments are presented by way of example only, and are not intended to limit the scope of the invention. In fact, the novel devices, methods, and media described herein may be embodied in a variety of other forms. In addition, various omissions and substitutions of the devices, methods and media described herein may be made without departing from the spirit of the invention. And changes. The accompanying claims and their equivalents are intended to be in the

1‧‧‧planned device

2‧‧‧Power Demand Forecasting System

3‧‧‧Generator operation data acquisition system

4‧‧‧Input and output interface

5‧‧‧Computer equipment

6‧‧‧Communication network

7‧‧‧External devices

11‧‧‧Memory Department

12‧‧‧Dummy output limit calculation unit

13‧‧‧Power Generation Limit Value Calculation Unit

14‧‧‧Power Generation Calculation Unit

15‧‧‧Next period initial value calculation unit

16‧‧‧ Operational Planning Department

51‧‧‧ processor

52‧‧‧Main memory device

53‧‧‧Auxiliary memory device

54‧‧‧Network interface

55‧‧‧Device interface

56‧‧‧ busbar

S101～S107‧‧‧Steps

Fig. 1 is a block diagram showing an example of a schematic configuration of an operation plan drawing device according to an embodiment of the present invention. 2(A) and 2(B) are diagrams showing the operation data of the generator. 3(A) and (B) are diagrams illustrating the dummy output limit. 4(A) and 4(B) are diagrams showing an example of calculation of the power generation amount limit value. 5(A) and (B) are diagrams showing another example of calculation of the power generation amount limit value. FIG. 6 is a view for explaining processing of the next period initial value calculation unit 15. Fig. 7 is a view showing an example of an operation plan. Fig. 8 is a view showing an example of a schematic flow chart of the overall processing of the operation plan drawing device of the embodiment. Fig. 9 is a block diagram showing an example of a hardware configuration of the operation plan drawing device of the embodiment.

Claims (6)

An operation plan drafting device for preparing an operation planner of the generator related to a power generation amount of a generator; and comprising: a dummy output limit calculation unit that is based at least on a generator output change rate and a load hold time, And calculating a dummy output limit of the generator; the power generation amount limit value calculation unit is based on the initial value of the output power of the generator in the dummy output limit and the time period, and an initial value of the increase/decrease direction, and the time period Calculating a power generation amount limit value of the generator in the period of time, and calculating a power generation amount limit value in the period of time; and generating a power amount calculation unit that solves at least a constraint condition related to the power generation amount limit value The power generation amount of the above-mentioned generator in the above period is calculated by optimizing the problem. The operation plan planning device according to claim 1, further comprising: a next period initial value calculation unit that is based on the power generation amount of the generator in the first period and the dummy output limit And calculating, as an initial value of the magnitude of the output power of the generator in the second period, which is the second period of the first period, the first initial value and the initial value of the increase/decrease direction, that is, the second initial value, and the second period The initial value of the remaining time of the load of the above generator is the third initial value. The operation plan drawing device of claim 2, wherein the next period initial value calculation unit sets the output power value of the generator and the increase/decrease direction of the output power at the end of the first time period as the first And an initial value and the second initial value; and the remaining time from the load holding time corresponding to the output power value minus the duration of the output power value is the third initial value. The operation plan drawing device of claim 3, wherein the next period initial value calculation unit calculates the output based on a dummy output line that is determined based on the power generation amount of the generator in the period of time and the dummy output limit The power value is the duration of the above. An operation plan formulation method for formulating an operation plan of the generator related to a power generation amount of a generator; and having: a dummy output limit calculation step based on at least a generator output change rate and load retention Calculating a virtual output limit of the generator; calculating a power generation limit value based on the initial value of the output power of the generator and the initial value of the increase/decrease direction based on the dummy output limit and the time period, and the above The load of the generator in the time period maintains an initial value of the remaining time, and calculates a power generation limit value of the generator in the time period; and a power generation amount calculation step, which is solved by solving at least the power generation limit value The optimization problem of the constraint conditions is used to calculate the power generation amount of the above-mentioned generator in the above period. A memory medium having a program for formulating an operation plan of the generator related to the amount of power generated by the generator, and causing the computer to perform the following steps: a dummy output limit calculation step, which is based at least on the generator The output change rate and the load hold time are calculated, and the virtual output limit of the generator is calculated; the power generation limit value calculation step is based on the initial value of the output power of the generator in the dummy output limit and the time period, and the increase or decrease And an initial value of the direction and an initial value of the remaining time of the load of the generator in the time period, and calculating a power generation limit value of the generator in the time period; and a power generation amount calculation step, which is solved by at least The power generation amount of the above-described generator in the above-described period is calculated by optimizing the constraint conditions related to the above-described power generation limit value.