JP7318836B1 - Management system - Google Patents

Abstract

An object of the present invention is to reduce the difference between a wheeling actual value and a wheeling planned value. A management system is a management system for managing a transportation plan for supplying electric power from power generation equipment and power storage equipment to demand equipment via an electric power system. It comprises a determination unit 54 that determines according to the power prediction value and the state of charge of the power storage equipment, and a correction unit 55 that corrects the transportation plan when the determination result of the determination unit 54 is affirmative. [Selection drawing] Fig. 4

Description

TECHNICAL FIELD The present disclosure relates to techniques for managing consignment plans.

BACKGROUND ART Conventionally, there has been proposed a consignment technology for supplying power from a remote power supply base to a demand facility via a power system. For example, Patent Literature 1 discloses a technique for creating a transportation plan for supplying power to demand equipment from a power supply base where power generation equipment and power storage equipment are installed.

Japanese Patent Application Laid-Open No. 2021-141778

The power actually generated by the power generation equipment may fluctuate from moment to moment depending on, for example, weather conditions. By charging the power storage equipment with the excess of the actual power over the planned value of the wheeling, or by compensating for the shortage of power with respect to the planned value of the wheeling by discharging the power storage equipment, the actual value of the wheeling power (hereinafter "actual wheeling value") ) and the planned value of the wheeling power (hereinafter referred to as the “planned wheeling value”) can be reduced.

However, depending on the power generation state of the power generation equipment or the state of charge of the power storage equipment, it may not be possible to sufficiently reduce the difference (imbalance) between the wheeling actual value and the wheeling planned value. For example, when the power storage equipment is fully charged, the excess power generated by the power generation equipment cannot be charged to the power storage equipment. In addition, when the power storage equipment is completely discharged, the power storage equipment cannot compensate for the shortage of the electric power generated by the power generation equipment. In consideration of the above circumstances, one aspect of the present disclosure aims to reduce the difference between the actual wheeling value and the wheeling plan value.

In order to solve the above problems, a management system according to one aspect of the present disclosure is a management system that manages a transportation plan for supplying power from power generation equipment and power storage equipment to demand equipment via a power system. a determination unit for determining whether or not to modify the wheeling plan according to the predicted electric power value of the power generation equipment and the state of charge of the power storage equipment; and a correction unit for correcting the consignment plan.

1 is a block diagram illustrating the configuration of a power system; FIG. It is a block diagram which illustrates the structure of a management system. It is explanatory drawing of a consignment plan. It is a block diagram which illustrates the functional composition of a management system. FIG. 4 is an explanatory diagram of power prediction values; FIG. 4 is an explanatory diagram regarding operations of a determination unit and a correction unit; FIG. 10 is an explanatory diagram of operations in case 1; FIG. 10 is an explanatory diagram of operations in case 2; FIG. 11 is an explanatory diagram of operations in case 3; FIG. 11 is an explanatory diagram of operations in case 4; FIG. 11 is an explanatory diagram of operations in case 5; FIG. 11 is an explanatory diagram of operations in case 6; FIG. 11 is an explanatory diagram of operations in case 7; FIG. 11 is an explanatory diagram of operations in case 8; FIG. 11 is an explanatory diagram of operations in case 9; It is a flowchart of a plan correction process.

A mode for carrying out the present disclosure will be described with reference to the drawings. In addition, the form described below is an exemplary form assumed when implementing the present disclosure. Accordingly, the scope of the present disclosure is not limited to the forms exemplified below.

A: Embodiment FIG. 1 is a block diagram of a power system 100 in one form of the present disclosure. A power system 100 of this embodiment includes a power system 11 , a demand facility 12 , a power supply base 13 and a management system 14 . The power system 11 is a system for supplying electric power to consumers such as business facilities or general households. The power system 11 is managed by a general power transmission and distribution business operator. The demand facility 12 is connected to the demand point Qa of the power grid 11 . The demand equipment 12 is business equipment that operates using power supplied from the power system 11 .

The power supply base 13 is a power generation facility that supplies power consigned to the demand equipment 12 to the power grid 11 . Consignment in this embodiment is self-consignment in which a predetermined relationship is established between the business operator that operates the demand facility 12 and the business operator that operates the power supply base 13 . For example, when the demand facility 12 and the power supply base 13 are operated by a common operator, or when there is a certain relationship such as a capital relationship between the operator of the demand facility 12 and the operator of the power supply base 13 is assumed. However, the operator of the demand facility 12 and the operator of the power supply base 13 may be unrelated.

As illustrated in FIG. 1 , the power supply base 13 includes a power generation system 20 and a power storage system 30 . The power generation system 20 and the power storage system 30 are connected to a consignment point Qb in the power grid 11 .

The power generation system 20 is a system that generates electric power, and includes power generation equipment 21 and a control device 22 . The power generation facility 21 is a renewable energy power generator that generates power using renewable energy such as sunlight, wind power, water power, geothermal heat, or solar heat. Therefore, the power generated by the power generation system 20 may fluctuate from moment to moment depending on various factors such as weather. In addition, the power generation equipment 21 may be composed of a plurality of generators of different types. The control device 22 is a PCS (Power Conditioning System) that controls power generation by the power generation equipment 21 . The electric power generated by the power generation equipment 21 is supplied to the consignment point Qb of the electric power system 11 via the control device 22 .

The power storage system 30 is a system that can be charged and discharged, and includes power storage equipment 31 and a control device 32 . The power storage equipment 31 can selectively supply (discharge) power to the power grid 11 and store (charge) the power generated by the power generation equipment 21 . Note that the power storage equipment 31 may be configured by a plurality of storage batteries configured separately from each other. The control device 32 is a PCS that controls discharging and charging by the power storage equipment 31 . The electric power discharged by the power storage equipment 31 is supplied to the consignment point Qb of the electric power system 11 via the control device 32 . Note that the power generation equipment 21 and the power storage equipment 31 may be controlled by a single control device.

The management system 14 manages a plan (hereinafter referred to as “consignment plan P”) for consigning power from the power supply base 13 (specifically, the power generation equipment 21 and the power storage equipment 31) to the demand equipment 12 via the power system 11. It is a computer system that The management system 14 can communicate with each of the power generation system 20 and the power storage system 30 via a communication network (not shown) such as a dedicated line, for example.

FIG. 2 is a block diagram illustrating the configuration of the management system 14. As shown in FIG. As illustrated in FIG. 2, the management system 14 includes a control device 41, a storage device 42, and a communication device 43. FIG. Note that the management system 14 can be realized by a single device, or by a plurality of devices configured separately from each other. Also, part or all of the functions of the management system 14 may be installed in the power generation system 20 or the power storage system 30 .

The controller 41 is composed of one or more processors that control each element of the management system 14 . Specifically, one or more processors such as CPU (Central Processing Unit), GPU (Graphics Processing Unit), DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), or ASIC (Application Specific Integrated Circuit) The control device 41 is configured by the following.

The control device 41 generates a transportation plan P. FIG. 3 is an explanatory diagram of the transportation plan P. As shown in FIG. The transmission plan P represents temporal changes in electric power to be transmitted (hereinafter referred to as "transmission power") on a specific date (hereinafter referred to as "transmission target date"). Specifically, a planned value of the electric power to be transferred (hereinafter referred to as a “transfer plan value X(t)”) at each of a plurality of times t on the day to be transferred is specified in the transfer plan P. The time t is a point in time set every 30 minutes, for example, on the consignment target day. In FIG. 3, at each time t during the daytime from 6:00 to 18:00, the power generated by the power generation system 20 (for example, solar power generation) is consigned, and at each time t at night after 18:00 , the electric power stored in the power storage system 30 is planned to be consigned.

The transportation plan P includes a first transportation plan P1 and a second transportation plan P2. The first consignment plan P1 is a consignment plan P generated in advance before the arrival of the consignment target date. For example, the first consignment plan P1 is created by noon on the day before the day to be consigned. On the other hand, the second transportation plan P2 is a transportation plan P that is repetitively generated at each time t on the day of transportation (the current day).

Specifically, the second transportation plan P2 is generated by modifying the first transportation plan P1. That is, the second transportation plan P2 is generated by correcting the first transportation plan P1 generated the day before the transportation target date according to the states of the power generation equipment 21 and the power storage equipment 31 on the current transportation target date. be. In both the first transportation plan P1 and the second transportation plan P2, a transportation plan value X(t) is designated every time t.

The storage device 42 in FIG. 2 is one or more memories that store programs executed by the control device 41 and data used by the control device 41 . The storage device 42 is composed of a known recording medium such as a magnetic recording medium or a semiconductor recording medium. The storage device 42 may be configured by a combination of multiple types of recording media. A portable recording medium that is detachable from the management system 14 may be used as the storage device 42 .

The communication device 43 communicates with an external device by wire or wirelessly. The communication device 43 communicates with an external device via a communication network (not shown) such as a dedicated line. For example, the communication device 43 communicates with the power generation system 20 or the power storage system 30 . A communication device 43 separate from the management system 14 may be connected to the management system 14 by wire or wirelessly.

The control device 22 of the power generation system 20 transmits the actual value of the power actually generated by the power generation equipment 21 (hereinafter referred to as "power generation actual value G"). For example, the power generation performance value G is transmitted from the power generation system 20 at predetermined intervals. The power storage system 30 also transmits charge information C representing the current state of charge of the power storage equipment 31 . The charging information C is, for example, the amount of discharge and the amount of charge by the power storage equipment 31, or SOC (State Of Charge). For example, charging information C is transmitted from the power storage system 30 at a predetermined cycle. The communication device 43 receives the actual power generation value G transmitted from the power generation system 20 and the charging information C transmitted from the power storage system 30 .

The communication device 43 also receives weather information W from the weather observation system 15 . The weather observation system 15 generates weather information W using observation results from various observation equipment such as weather satellites or AMeDAS. The weather information W includes, for example, temperature, humidity, amount of solar radiation, atmospheric pressure, wind direction, wind volume, and the like. That is, the weather information W includes various information that affects power generation by the power generation equipment 21 .

The communication device 43 transmits the transportation plan P to the cross-regional organization system 16 . The cross-regional organization system 16 is a computer system operated by the cross-regional power management promotion organization (cross-regional organization) that monitors and controls the transportation plan P of each business operator. Specifically, the first transportation plan P1 is transmitted to the cross-regional organization system 16 for each date, and the second transportation plan P2 is transmitted to the inter-regional organization system 16 at each time t within each transportation target day.

FIG. 4 is a block diagram illustrating the functional configuration of the management system 14. As shown in FIG. The control device 41 executes a program stored in the storage device 42 to perform a plurality of functions (prediction unit 51, acquisition unit 52, generation unit 53, determination unit 54 and correction unit 55) for managing the transportation plan P. ).

The prediction unit 51 generates a predicted value of power generated by the power generation facility 21 (hereinafter referred to as "power predicted value F(t)"). Specifically, the prediction unit 51 calculates the predicted electric power value F( t). The generation of the power estimate F(t) is repeated at time t on each date. For example, the predicted electric power value F(t) at each time t is generated according to the latest actual power generation value G and the latest weather information W. A known technique is arbitrarily adopted for the generation of the power prediction value F(t) by the prediction unit 51 .

FIG. 5 is an explanatory diagram of the power prediction value F(t). The power predicted value F(t) of this embodiment includes a predicted upper limit value FH(t), a predicted average value FM(t), and a predicted lower limit value FL(t). The predicted upper limit value FH(t) exceeds the predicted average value FM(t), and the predicted lower limit value FL(t) falls below the predicted average value FM(t) (FH(t)>FM(t)>FL(t) ).

Specifically, the predicted upper limit value FH(t) is the maximum value in a specific interval (hereinafter referred to as an “observation interval”) in the probability distribution of the power generated by the power generation facility 21, and the predicted lower limit value FL is the observation interval Minimum value. The observation interval is, for example, ±3 SD (SD: standard deviation) interval with respect to the predicted average value FM(t). As can be understood from the above description, the predicted upper limit value FH(t) is the statistically significant assumed maximum value for the power generated by the power generation equipment 21, and the predicted lower limit value FL(t) is the power generation equipment 21 is the minimum assumed statistically significant value for the power produced by . That is, it is highly likely that the actual wheeling value V(t) at time t is a numerical value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t). In the above description, an interval of ±3SD with respect to the predicted average value FM(t) was exemplified as the observation interval, but the method of defining the observation interval is not limited to the above exemplification. For example, an arbitrary interval such as an interval of ±2SD with respect to the predicted average value FM(t) may be defined as an observation interval.

The acquisition unit 52 in FIG. 4 acquires the charging information C of the power storage equipment 31 . Specifically, the acquisition unit 52 receives the charging information C transmitted from the power storage system 30 by the communication device 43 . Acquisition of the charging information C is repeated periodically.

The generator 53 generates the first transportation plan P1. As mentioned above, the generation of the first churn plan P1 is repeated for each date. Specifically, the generation unit 53 generates the first transportation plan P1 for the day before the day to be wheeled according to the electric power prediction value F(t) and the charging information C for the day before the day to be wheeled. For example, the sum of the predicted average value FM(t) of the day before the day to be wheeled and the amount of discharge indicated by the charging information C is set as each wheeling plan value X(t) in the first wheeling plan P1.

The determination unit 54 determines whether or not to modify the first transportation plan P1. As described above, the second transportation plan P2 is generated by modifying the first transportation plan P1, so the determination by the determination unit 54 is also expressed as determination of whether or not to generate the second transportation plan P2. Specifically, the determination unit 54 determines whether or not it is necessary to correct the first transportation plan P1 according to the power prediction value F(t) of the power generation equipment 21 and the state of charge (charge information C) of the power storage equipment 31. .

The modifying unit 55 modifies the first transportation plan P1 when the determination result of the determining unit 54 is affirmative (that is, when the determining unit 54 determines that the first transportation plan P1 should be modified). A second transportation plan P2 is generated by modifying the first transportation plan P1. On the other hand, when the determination result of the determining unit 54 is negative (when the determining unit 54 determines that the first transportation plan P1 should not be modified), the modifying unit 55 does not modify the first transportation plan P1. That is, the second transportation plan P2 is not generated.

FIG. 6 is an explanatory diagram regarding operations of the determination unit 54 and the correction unit 55 in this embodiment. As understood from FIG. 6, the determination unit 54
Item A: Magnitude relationship between transportation plan value X(t) and power prediction value F(t) Item B: Whether or not the power storage equipment 31 is in a dischargeable state Item C: The power storage equipment 31 It is determined which of a plurality of cases (1 to 9) in which the combination of the three items, that is, whether the charging state is in the chargeable state or not, the current state corresponds to.

That is, the determination unit 54 first compares the wheeling plan value X(t) in the first wheeling plan P1 with the predicted upper limit value FH(t) and the predicted lower limit value FL(t) (item A). to determine whether or not to modify the first transportation plan P1. Second, the determination unit 54 determines whether the state of charge of the power storage equipment 31 corresponds to the dischargeable state (item B), and whether the state of charge of the power storage equipment 31 corresponds to the chargeable state (item According to C), it is determined whether or not to modify the first transportation plan P1.

The dischargeable state of the power storage equipment 31 is a state in which part or all of the power shortage of the power generation equipment 21 can be compensated for by discharging the power storage equipment 31 . That is, the dischargeable state is a state in which the amount of charge in the power storage equipment 31 exceeds a predetermined value. Specifically, a state in which the power storage equipment 31 is not zero (a state in which the power storage equipment 31 is charged to some extent) corresponds to a dischargeable state, and a state in which the power storage equipment 31 is completely discharged (a state in which the power storage equipment 31 is zero) is It does not correspond to the dischargeable state.

On the other hand, the chargeable state is a state in which part or all of the excess power of the power generation equipment 21 can be absorbed by charging the power storage equipment 31 . That is, the dischargeable state is a state in which the amount of charge in the power storage equipment 31 is below a predetermined value. Specifically, the state in which the power storage equipment 31 has not reached full charge (the state in which there is room for charging) corresponds to the chargeable state, and the fully charged state in which the power storage equipment 31 is fully charged corresponds to the chargeable state. does not apply to

As can be understood from the above description, when the amount of charge in power storage equipment 31 is within a predetermined range, the state of charge of power storage equipment 31 corresponds to both the dischargeable state and the chargeable state. On the other hand, a state that is neither a dischargeable state nor a chargeable state does not occur.

Cases 1 to 3 in FIG. 6 are cases in which the wheeling plan value X(t) exceeds the predicted upper limit value FH(t). Cases 4 to 6 in FIG. 6 are cases where the wheeling plan value X(t) is a numerical value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t). Cases 7 to 9 in FIG. 6 are cases in which the wheeling plan value X(t) falls below the predicted lower limit value FL(t). The determination unit 54 determines which of cases 1 to 9 the current situation corresponds to. Incidentally, when the wheeling plan value X(t) matches the predicted upper limit value FH(t), either case 3 or case 4 may be determined. Also, when the wheeling plan value X(t) matches the predicted lower limit value FL(t), either case 6 or case 7 may be determined.

7 to 15 are schematic diagrams of the wheeling plan value X(t) of the first wheeling plan P1 and the state of charge of the power storage equipment 31 in each case. In the following description, the operations of the determination unit 54 and the correction unit 55 are illustrated for each case.

[Case 1]
Case 1 is a case where the transportation plan value X(t) exceeds the predicted upper limit value FH(t) and the state of charge does not correspond to the dischargeable state and the state of charge corresponds to the chargeable state. As exemplified in FIG. 7, in Case 1, the actual value of the wheeling power (hereinafter referred to as “tracking performance value V(t)”) is between the predicted upper limit value FH(t) and the predicted lower limit value FL(t). Regardless of the numerical value, the actual wheeling value V(t) falls short of the wheeling plan value X(t). Furthermore, since the state of charge of the power storage equipment 31 does not correspond to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) cannot be compensated for by discharging the power storage equipment 31 . Therefore, the determination unit 54 determines that the first transportation plan P1 needs to be corrected. The correction unit 55 changes the transportation plan value X(t) to the predicted lower limit value FL(t).

If the actual wheeling value V(t) is equal to or greater than the predicted lower limit value FL(t) as a result of changing the wheeling plan value X(t) to the predicted lower limit value FL(t), the wheeling actual value V(t) Satisfy the planned value X(t). If the actual wheeling value V(t) exceeds the predicted lower limit value FL(t), the actual wheeling value V(t) exceeds the planned wheeling value X(t). However, since the charging state of the power storage equipment 31 corresponds to the chargeable state, the excess of the wheeling actual value V(t) over the wheeling planned value X(t) is absorbed by the charging of the power storage equipment 31 .

As can be understood from the above description, in Case 1, the shortage of the actual wheeling value V(t) with respect to the wheeling plan value X(t) can be reduced by the process of decreasing the wheeling plan value X(t). Especially in the present embodiment, since the wheeling plan value X(t) is changed to the predicted lower limit value FL(t), even if the actual wheeling value V(t) is the predicted lower limit value FL(t), the wheeling plan It is possible to effectively reduce the shortfall of the actual consignment value V(t) with respect to the value X(t). As can be understood from the above explanation, in case 1, the first transportation plan P1 is corrected so as to eliminate the excess or deficiency of the actual transportation value V(t) with respect to the transportation plan value X(t).

[Case 2]
Case 2 is a case where the transportation plan value X(t) exceeds the predicted upper limit value FH(t) and the state of charge corresponds to both the dischargeable state and the chargeable state. As illustrated in FIG. 8, in Case 2, even if the actual wheeling value V(t) is any value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the actual wheeling value V(t) falls short of the transportation plan value X(t). However, since the charged state of the power storage equipment 31 corresponds to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) can be compensated for by discharging the power storage equipment 31 . Therefore, the determination unit 54 determines that correction of the first transportation plan P1 is unnecessary. The correction unit 55 does not correct the first transportation plan P1.

[Case 3]
Case 3 is a case where the wheeling plan value X(t) exceeds the predicted upper limit value FH(t) and the state of charge corresponds to the dischargeable state and the state of charge does not correspond to the chargeable state. As illustrated in FIG. 9, in Case 3, even if the actual wheeling value V(t) is any value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the actual wheeling value V(t) V(t) falls short of the transportation plan value X(t). However, since the charged state of the power storage equipment 31 corresponds to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) can be compensated for by discharging the power storage equipment 31 . Therefore, the determination unit 54 determines that correction of the first transportation plan P1 is unnecessary. The correction unit 55 does not correct the first transportation plan P1.

[Case 4]
In case 4, when the wheeling plan value X(t) is a numerical value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the state of charge does not correspond to the dischargeable state, and This is the case where the charging state corresponds to the chargeable state. As exemplified in FIG. 10, in case 4, when the actual wheeling value V(t) is the predicted lower limit value FL(t), the actual wheeling value V(t) is Run short. Furthermore, since the state of charge of the power storage equipment 31 does not correspond to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) cannot be compensated for by discharging the power storage equipment 31 . Therefore, the determination unit 54 determines that the first transportation plan P1 needs to be corrected. The correction unit 55 changes the transportation plan value X(t) to the predicted lower limit value FL(t).

If the actual wheeling value V(t) is equal to or greater than the predicted lower limit value FL(t) as a result of changing the wheeling plan value X(t) to the predicted lower limit value FL(t), the wheeling actual value V(t) Satisfy the planned value X(t). If the actual wheeling value V(t) exceeds the predicted lower limit value FL(t), the actual wheeling value V(t) exceeds the planned wheeling value X(t). However, since the charging state of the power storage equipment 31 corresponds to the chargeable state, the excess of the wheeling actual value V(t) over the wheeling planned value X(t) is absorbed by the charging of the power storage equipment 31 .

As can be understood from the above description, in case 4, the shortage of the actual wheeling value V(t) with respect to the wheeling plan value X(t) can be reduced by the process of decreasing the wheeling plan value X(t). Especially in the present embodiment, since the wheeling plan value X(t) is changed to the predicted lower limit value FL(t), even if the actual wheeling value V(t) is the predicted lower limit value FL(t), the wheeling plan It is possible to effectively reduce the shortfall of the actual consignment value V(t) with respect to the value X(t). As can be understood from the above explanation, in Case 4, the first transportation plan P1 is corrected so as to eliminate the excess or deficiency of the actual transportation value V(t) with respect to the transportation plan value X(t).

[Case 5]
In case 5, when the transportation plan value X(t) is a numerical value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the state of charge is both the dischargeable state and the chargeable state. If applicable. As illustrated in FIG. 11, in case 5, when the actual wheeling value V(t) is the predicted lower limit value FL(t), the actual wheeling value V(t) is Run short. However, since the charged state of the power storage equipment 31 corresponds to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) can be compensated for by discharging the power storage equipment 31 .

On the other hand, when the actual wheeling value V(t) is the predicted upper limit value FH(t), the wheeling actual value V(t) exceeds the wheeling plan value X(t). However, since the charging state of the power storage equipment 31 corresponds to the chargeable state, the excess of the wheeling actual value V(t) over the wheeling planned value X(t) is absorbed by the charging of the power storage equipment 31 . Therefore, the determination unit 54 determines that correction of the first transportation plan P1 is unnecessary. The correction unit 55 does not correct the first transportation plan P1.

[Case 6]
In case 6, when the wheeling plan value X(t) is between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the state of charge corresponds to the dischargeable state and This is when the state does not correspond to the chargeable state. As illustrated in FIG. 12, in case 6, when the actual wheeling value V(t) is the predicted lower limit value FL(t), the actual wheeling value V(t) is Run short. However, since the charged state of the power storage equipment 31 corresponds to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) can be compensated for by discharging the power storage equipment 31 .

On the other hand, when the actual wheeling value V(t) is the predicted upper limit value FH(t), the wheeling actual value V(t) exceeds the wheeling plan value X(t). Furthermore, since the state of charge of the power storage equipment 31 does not correspond to the chargeable state, the excess of the actual wheeling value V(t) over the planned wheeling value X(t) cannot be absorbed by charging the power storage equipment 31 . Therefore, the determination unit 54 determines that the first transportation plan P1 needs to be corrected. The correction unit 55 changes the transportation plan value X(t) to the predicted upper limit value FH(t). As a result of changing the wheeling plan value X(t) to the predicted upper limit value FH(t), even if the wheeling actual value V(t) is the predicted upper limit value FH(t), the wheeling actual value V(t) Satisfy the planned value X(t).

As can be understood from the above description, in Case 6, the excess of the actual wheeling value V(t) over the wheeling plan value X(t) can be reduced by increasing the wheeling plan value X(t). Especially in this embodiment, since the wheeling plan value X(t) is changed to the predicted upper limit value FH(t), even if the actual wheeling value V(t) is the predicted upper limit value FH(t), the wheeling plan It is possible to effectively reduce the excess of the actual wheeling value V(t) over the value X(t). As can be understood from the above explanation, in case 6, the first transportation plan P1 is corrected so as to eliminate the excess or deficiency of the actual transportation value V(t) with respect to the transportation plan value X(t).

[Case 7]
Case 7 is a case where the transportation plan value X(t) is below the predicted lower limit value FL(t) and the state of charge does not correspond to the dischargeable state and the state of charge corresponds to the chargeable state. As illustrated in FIG. 13, in case 7, even if the actual wheeling value V(t) is any value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the actual wheeling value V(t) V(t) exceeds the wheeling plan value X(t). However, since the charging state of the power storage equipment 31 corresponds to the chargeable state, the excess of the wheeling actual value V(t) over the wheeling planned value X(t) can be absorbed by charging the power storage equipment 31 . Therefore, the determination unit 54 determines that correction of the first transportation plan P1 is unnecessary. The correction unit 55 does not correct the first transportation plan P1.

[Case 8]
Case 8 is a case where the transportation plan value X(t) is below the predicted lower limit value FL(t) and the state of charge corresponds to both the dischargeable state and the chargeable state. As illustrated in FIG. 14, in case 8, even if the actual wheeling value V(t) is any value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the actual wheeling value V(t) V(t) exceeds the wheeling plan value X(t). However, since the charging state of the power storage equipment 31 corresponds to the chargeable state, the excess of the wheeling actual value V(t) over the wheeling planned value X(t) can be absorbed by charging the power storage equipment 31 . Therefore, the determination unit 54 determines that correction of the first transportation plan P1 is unnecessary. The correction unit 55 does not correct the first transportation plan P1.

[Case 9]
Case 9 is a case where the transportation plan value X(t) is below the predicted lower limit value FL(t) and the state of charge corresponds to the dischargeable state and the state of charge does not correspond to the chargeable state. As illustrated in FIG. 15, in Case 9, even if the actual wheeling value V(t) is any value between the predicted upper limit value FH(t) and the predicted lower limit value FL(t), the actual wheeling value V(t) V(t) exceeds the wheeling plan value X(t). Furthermore, since the state of charge of the power storage equipment 31 does not correspond to the chargeable state, the excess of the actual wheeling value V(t) over the planned wheeling value X(t) cannot be absorbed by charging the power storage equipment 31 . Therefore, the determination unit 54 determines that the first transportation plan P1 needs to be corrected. The correction unit 55 changes the transportation plan value X(t) to the predicted upper limit value FH(t).

If the actual wheeling value V(t) is equal to or less than the predicted upper limit value FH(t) as a result of changing the wheeling plan value X(t) to the predicted upper limit value FH(t), the wheeling actual value V(t) Satisfy the planned value X(t). If the actual wheeling value V(t) falls below the predicted upper limit value FH(t), the actual wheeling value V(t) falls short of the planned wheeling value X(t). However, since the charged state of the power storage equipment 31 corresponds to the dischargeable state, the shortage of the actual wheeling value V(t) with respect to the planned wheeling value X(t) is compensated for by discharging the power storage equipment 31 .

As can be understood from the above description, in case 9, the excess of the actual wheeling value V(t) over the wheeling plan value X(t) can be reduced by increasing the wheeling plan value X(t). Especially in this embodiment, since the wheeling plan value X(t) is changed to the predicted upper limit value FH(t), even if the actual wheeling value V(t) is the predicted upper limit value FH(t), the wheeling plan It is possible to effectively reduce the excess of the actual wheeling value V(t) over the value X(t). As can be understood from the above explanation, the first transportation plan P1 is corrected so as to eliminate the excess or deficiency of the actual transportation value V(t) with respect to the transportation plan value X(t).

FIG. 16 is a flowchart of a process (hereinafter referred to as "plan correction process") executed by the control device 41 (determination unit 54 and correction unit 55) for correction of the first transportation plan P1. The plan correction process is executed every time t. That is, the plan correction process including the determination by the determination unit 54 and the correction by the correction unit 55 is repeated on the day to be consigned.

When the plan correction process is started, the control device 41 (determining unit 54) determines to which of cases 1 to 8 the current situation corresponds (Sa1 to Sa8). If the current situation does not correspond to any of cases 1 to 8 (Sa8: NO), the control device 41 determines that the current situation corresponds to case 9 (Sa9). Steps Sa1 to Sa9 are processes for determining whether or not to modify the first transportation plan P1.

If it is determined that the current situation corresponds to Case 1 or Case 4 (Sa1: YES, Sa4: YES), the control device 41 (correction unit 55) predicts the first transportation plan value X(t) of the first transportation plan P1. A second transportation plan P2 is generated by changing the lower limit value FL(t) (Sb1). The control device 41 (correction unit 55) transmits the second transportation plan P2 from the communication device 43 to the cross-regional organization system 16 (Sb2).

If it is determined that the current situation corresponds to Case 6 or Case 9 (Sa6: YES, Sa9), the control device 41 (correction unit 55) changes the transportation plan value X(t) of the first transportation plan P1 to the predicted upper limit value A second transportation plan P2 is generated by changing FH(t) (Sb3). The control device 41 (correction unit 55) transmits the second transportation plan P2 from the communication device 43 to the cross-regional organization system 16 (Sb4).

If it is determined that the current situation corresponds to any of the cases (2, 3, 5, 7 or 8) other than the cases exemplified above (Sa2, Sa3, Sa5, Sa7, Sa8: YES), the control device 41 (correction unit 55) , the first transportation plan P1 is not modified (Sb5). Therefore, transmission of the second churn plan P2 is not carried out. The specific procedure of the plan correction process is as described above.

As can be understood from the above description, in the present embodiment, the first transportation plan P1 is corrected according to the power prediction value F(t) of the power generation equipment 21 and the state of charge (charge information C) of the power storage equipment 31. Therefore, the difference (imbalance) between the actual wheeling value V(t) and the wheeling plan value X(t) can be reduced. Especially in this embodiment, the relationship between the wheeling plan value X(t) and the predicted upper limit value FH(t) or the predicted lower limit value FL(t) and the state of charge of the power storage equipment 31 correspond to the dischargeable state or the chargeable state. Whether or not to correct the wheeling plan value X(t) is taken into consideration in determining whether or not the wheeling plan value X(t) needs to be corrected, so the difference between the wheeling actual value V(t) and the wheeling plan value X(t) can be effectively reduced.

Further, in this embodiment, the first transportation plan P1, which is set before the arrival of the transportation target date, is repetitively corrected on the transportation target date. Therefore, compared with the form in which the first transportation plan P1 is modified only once, the transportation plan value X(t) and the actual transportation value V (t) can be effectively reduced.

B: Modifications Examples of specific modifications added to the above-exemplified embodiments are given below. Two or more aspects arbitrarily selected from the following examples may be combined as appropriate within a mutually consistent range.

(1) In the above embodiment, the transmission plan value X(t) is changed to the predicted lower limit value FL(t) in case 1 or case 4, but after the change of the transmission plan value X(t) is not limited to the predicted lower limit value FL(t).

For example, in case 1 or case 4, the correction unit 55 may execute a correction by subtracting a predetermined value from the transportation plan value X(t) of the first transportation plan P1, or A correction that multiplies by a predetermined value less than one may be performed. Further, in case 1 where the transportation plan value X(t) exceeds the predicted upper limit value FH(t), the correction unit 55 adjusts the transportation plan value X(t) to the predicted upper limit value FH(t) or the predicted average value FM(t). ) can be changed.

As can be understood from the above description, in Case 1 or Case 4, it is sufficient for the correction unit 55 to decrease the transportation plan value X(t), and the specific content of the correction to the transportation plan value X(t) is Moreover, the numerical value of the modified transportation plan value X(t) is arbitrary. From the viewpoint of accurately eliminating the excess or deficiency of the actual wheeling value V(t) with respect to the wheeling plan value X(t), the wheeling plan value X(t) should be set to the predicted lower limit value FL(t) is preferred.

(2) In the above embodiment, the transmission plan value X(t) is changed to the predicted upper limit value FH(t) in Case 6 or Case 9, but after the change of the transmission plan value X(t) is not limited to the predicted upper limit value FH(t).

For example, in Case 6 or Case 9, the correction unit 55 may execute correction by adding a predetermined value to the transportation plan value X(t), or add a predetermined value of 1 or more to the transportation plan value X(t). A multiplication correction may be performed. Further, in case 9 where the transportation plan value X(t) is lower than the predicted lower limit value FL(t), the correction unit 55 adjusts the transportation plan value X(t) to the predicted lower limit value FL(t) or the predicted average value FM(t). ) can be changed.

As can be understood from the above description, in Case 6 or Case 9, it is sufficient for the modification unit 55 to increase the transportation plan value X(t). Moreover, the numerical value of the modified transportation plan value X(t) is arbitrary. From the viewpoint of accurately eliminating the excess or deficiency of the actual wheeling value V(t) with respect to the wheeling plan value X(t), the wheeling plan value X(t) should be set to the predicted upper limit FH(t) is preferred.

(3) In the above embodiment, the first transportation plan P1 is generated for each day of transportation, but the conditions for generating the first transportation plan P1 are not limited to the above examples. For example, the first wheeling plan P1 may be pre-stored in storage device 42 .

For example, a plurality of first transportation plans P1 corresponding to different periods are prepared in advance. Specifically, the first transportation plan P1 is created for each period in which the conditions of the power generation equipment 21 and the power storage equipment 31 may differ. For example, the first transportation plan P1 is created seasonally or monthly. A first transportation plan P1 may be generated separately for each of weekdays and holidays.

As described above, the storage device 42 stores a plurality of first transportation plans P1 corresponding to different periods. The modifying unit 55 generates a second transportation plan P2 by modifying the first transportation plan P1 corresponding to the day to be subject to transportation among the plurality of first transportation plans P1 stored in the storage device 42 . As can be understood from the above description, the first transportation plan P1 need not be generated daily.

The modifying unit 55 may modify the transportation plan value X(t) by using the immediately preceding modified second transportation plan P2 as the first transportation plan P1 to be modified. That is, the initial first transportation plan P1 generated by the generator 53 may be cumulatively corrected.

Further, in each of the above-described forms, the form in which the control device 41 (generating unit 53) generates the first wheeling plan P1 according to the electric power prediction value F(t) and the charging information C was exemplified, but the first wheeling plan P1 need not be generated by controller 41; For example, a plan manually created by the operator of the management system 14 may be used as the first transportation plan P1.

(4) In the above embodiment, the transportation plan P (the first transportation plan P1 and the second transportation plan P2) is transmitted from the management system 14 to the cross-regional organization system 16, but the transportation plan P is used. The operation is not limited to the above examples. For example, the transportation plan P may be used to control the power generation equipment 21 and the power storage equipment 31 .

Specifically, the transportation plan P (first transportation plan P1 or second transportation plan P2) generated by the management system 14 is transmitted from the communication device 43 to the power supply base 13 . A transportation plan value X(t) specified by the transportation plan P at each time t is used as a command value for controlling the power generation equipment 21 and the power storage equipment 31 .

Specifically, the control device 22 of the power generation system 20 controls the power generation operation of the power generation equipment 21 according to the wheeling plan value X(t) of the wheeling plan P, and the control device 32 of the power storage system 30 controls the wheeling plan P The charging/discharging operation of the power storage equipment 31 is controlled according to the wheeling plan value X(t). For example, the control device 22 and the control device 32 control the power generation equipment 21 and the power storage equipment 31 so that the transportation power supplied to the transportation point Qb approaches the transportation plan value X(t). As understood from the above description, the destination and use of the transportation plan P are arbitrary in the present disclosure.

(5) The functions of the management system 14 according to the above embodiment are realized by the cooperation of one or more processors that constitute the control device 41 and programs stored in the storage device 42, as described above. The programs exemplified above can be provided in a form stored in a computer-readable recording medium and installed in a computer. The recording medium is, for example, a non-transitory recording medium, and an optical recording medium (optical disc) such as a CD-ROM is a good example. Also included are recording media in the form of It should be noted that the non-transitory recording medium includes any recording medium other than transitory, propagating signals, and does not exclude volatile recording media. Also, in a configuration in which a distribution device distributes a program via a communication network, a recording medium for storing the program in the distribution device corresponds to the non-transitory recording medium described above.

C: Supplementary Note From the above-exemplified forms, for example, the following configuration can be grasped.

A management system according to one aspect (aspect 1) of the present disclosure is a management system that manages a transportation plan for supplying power from a power generation facility and a power storage facility to a demand facility via a power system, wherein the transportation plan a determination unit that determines whether or not to modify the electric power prediction value of the power generation equipment and the state of charge of the power storage equipment; and a correction unit. In the above aspect, since the wheeling plan is corrected according to the power predicted value of the power generation facility and the state of charge of the power storage facility, the difference (imbalance) between the wheeling actual value and the wheeling plan value can be reduced.

In a specific example of Aspect 1 (Aspect 2), the predicted power value includes a predicted upper limit value and a predicted lower limit value, and the determining unit determines the wheeling plan value, the predicted upper limit value, and the predicted lower limit value in the wheeling plan. and determines whether or not to modify the transportation plan. In the above aspect, the relationship between the wheeling plan value and the predicted upper limit value or the predicted lower limit value is taken into consideration in determining whether or not the wheeling plan value needs to be corrected. Therefore, the difference between the wheeling actual value and the wheeling plan value is effectively reduced. can.

In the specific example of Aspect 2 (Aspect 3), the determination unit determines whether the state of charge corresponds to the dischargeable state and whether or not the state of charge corresponds to the chargeable state. Determine whether to modify the transportation plan. In the above aspect, whether or not the state of charge of the power storage equipment corresponds to the dischargeable state or the chargeable state is taken into consideration in determining whether or not the wheeling plan value needs to be corrected. Differences can be effectively reduced.

In a specific example of Aspect 3 (Aspect 4), when the wheeling plan value exceeds the predicted upper limit value, the state of charge does not correspond to the state of being able to be discharged, and the state of charge corresponds to the state of being able to be charged. When the determination unit determines to modify the transportation plan, the modification unit decreases the transportation plan value. When the planned wheeling value exceeds the predicted upper limit value and the state of charge does not correspond to the dischargeable state, the wheeling actual value is any value between the predicted upper limit value and the predicted lower limit value. is insufficient for the wheeling plan value. Therefore, the shortage of the wheeling actual value with respect to the wheeling plan value can be reduced by the process of decreasing the wheeling plan value.

In the specific example of aspect 3 or aspect 4 (aspect 5), when the transportation plan value is a numerical value between the predicted upper limit value and the predicted lower limit value, the state of charge does not correspond to the dischargeable state, Further, when the charging state corresponds to the chargeable state, the determining unit determines to modify the transportation plan, and the modifying unit decreases the transportation plan value. When the wheeling plan value is a numerical value between the predicted upper limit value and the predicted lower limit value, if the state of charge does not correspond to the dischargeable state, the wheeling actual value will be wheeled when the planned actual value is the predicted lower limit value. Insufficient for the planned value. Therefore, the shortage of the wheeling actual value with respect to the wheeling plan value can be reduced by the process of decreasing the wheeling plan value.

In a specific example of aspect 4 or aspect 5 (aspect 6), the correction unit changes the transportation plan value to the predicted lower limit value. In the above aspect, since the wheeling plan value is changed to the predicted lower limit value, even when the wheeling actual value is the predicted lower limit value, the shortage of the wheeling actual value with respect to the wheeling plan value can be effectively reduced.

In a specific example of any one of Aspects 3 to 6 (Aspect 7), when the wheeling plan value is a numerical value between the predicted upper limit value and the predicted lower limit value, the state of charge corresponds to the dischargeable state. and when the charging state does not correspond to the chargeable state, the determining unit determines to modify the transportation plan, and the modifying unit increases the transportation plan value. When the wheeling plan value is a numerical value between the predicted upper limit value and the predicted lower limit value, the wheeling actual value exceeds the wheeling plan value when the planned actual value is the predicted upper limit value in a state that does not correspond to the chargeable state. To exceed. Therefore, the excess of the wheeling actual value over the wheeling plan value can be reduced by the process of increasing the wheeling plan value.

In a specific example of any one of Aspects 3 to 7 (Aspect 8), when the wheeling plan value is lower than the predicted lower limit value, the state of charge corresponds to the dischargeable state, and the state of charge is the charging state. When it does not correspond to the possible state, the determination unit determines to modify the transportation plan, and the modification unit increases the transportation plan value. When the wheeling plan value is below the predicted lower limit value and the state of charge does not correspond to the chargeable state, the wheeling actual value exceeds the wheeling plan value regardless of whether the wheeling actual value is the predicted upper limit value or the predicted lower limit value. Therefore, the excess of the wheeling actual value over the wheeling plan value can be reduced by the process of increasing the wheeling plan value.

In a specific example of aspect 7 or aspect 8 (aspect 9), the correction unit changes the transportation plan value to the predicted upper limit value. In the above aspect, since the wheeling plan value is changed to the predicted upper limit value, even when the wheeling actual value is the predicted upper limit value, it is possible to effectively reduce excess of the wheeling actual value over the wheeling plan value.

In a specific example of any one of Aspects 1 to 9 (Aspect 10), the transportation plan is set before the arrival of the transportation target date, and the determination by the determination unit and the correction by the correction unit are performed on the transportation target date. is repeated in In the above aspect, the consignment plan (for example, the first consignment plan) set before the arrival of the consignment target date is repeatedly corrected on the relevant consignment target date. Therefore, compared to a form in which the wheeling plan is modified only once, it is possible to effectively reduce the difference between the wheeling plan value and the wheeling actual value according to the fluctuations in the status of the power generation equipment and the power storage equipment on the day to be wheeled.

DESCRIPTION OF SYMBOLS 100... Power system, 11... Power system, 12... Demand equipment, 13... Power supply base, 14... Management system, 15... Meteorological observation system, 16... Cross-regional organization system, 20... Power generation system, 21... Power generation facility, 22... Control Apparatus 30 Power storage system 31 Power storage equipment 32 Control device 41 Control device 42 Storage device 43 Communication device 51 Prediction unit 52 Acquisition unit 53 Generation unit 54 Determination Part, 55... Correction part.

Claims (10)

A management system for managing a consignment plan for supplying power from power generation equipment and power storage equipment to demand equipment via a power system,
a determination unit that determines whether or not to modify the wheeling plan according to the power prediction value of the power generation equipment and the state of charge of the power storage equipment;
and a correction unit that corrects the transportation plan when the determination result of the determination unit is affirmative. The predicted power value includes a predicted upper limit value and a predicted lower limit value,
The management system according to claim 1, wherein the determination unit determines whether or not to modify the transportation plan according to a relationship between a transportation plan value in the transportation plan and the predicted upper limit value and the predicted lower limit value. The determination unit is
whether the state of charge corresponds to a dischargeable state; and
The management system according to claim 2, wherein it is determined whether or not to modify the transportation plan according to whether or not the state of charge corresponds to a chargeable state. When the wheeling plan value exceeds the predicted upper limit value,
When the state of charge does not correspond to the dischargeable state and the state of charge corresponds to the chargeable state,
The determination unit determines to modify the transportation plan,
4. The management system according to claim 3, wherein said correction unit reduces said transportation plan value. When the transportation plan value is a numerical value between the predicted upper limit value and the predicted lower limit value,
When the state of charge does not correspond to the dischargeable state and the state of charge corresponds to the chargeable state,
The determination unit determines to modify the transportation plan,
4. The management system according to claim 3, wherein said correction unit reduces said transportation plan value. The management system according to claim 4 or 5, wherein the correction unit changes the transportation plan value to the predicted lower limit value. When the transportation plan value is a numerical value between the predicted upper limit value and the predicted lower limit value,
When the state of charge corresponds to the dischargeable state and the state of charge does not correspond to the chargeable state,
The determination unit determines to modify the transportation plan,
The management system according to claim 3, wherein the correction unit increases the transportation plan value. When the wheeling plan value is below the predicted lower limit value,
When the state of charge corresponds to the dischargeable state and the state of charge does not correspond to the chargeable state,
The determination unit determines to modify the transportation plan,
The management system according to claim 3, wherein the correction unit increases the transportation plan value. The management system according to claim 7 or 8, wherein the correction unit changes the transportation plan value to the predicted upper limit value. The consignment plan is set before the arrival of the consignment target date,
The management system according to claim 1, wherein the determination by the determination unit and the correction by the correction unit are repeated on the day subject to consignment.

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