Source: https://patents.google.com/patent/JP2015171189A/en
Timestamp: 2020-01-19 02:40:04
Document Index: 50897493

Matched Legal Cases: ['art 303', 'art 307', 'art 307', 'art 302', 'art 302', 'art 303', 'art 304', 'art 305', 'art 306']

JP2015171189A - Device and method for charge/discharge management, and program - Google Patents
Device and method for charge/discharge management, and program Download PDF
JP2015171189A
JP2015171189A JP2014043011A JP2014043011A JP2015171189A JP 2015171189 A JP2015171189 A JP 2015171189A JP 2014043011 A JP2014043011 A JP 2014043011A JP 2014043011 A JP2014043011 A JP 2014043011A JP 2015171189 A JP2015171189 A JP 2015171189A
use reservation
JP2014043011A
英介 下田
貴之 杉本
2014-03-05 Application filed by 清水建設株式会社, Shimizu Corp filed Critical 清水建設株式会社
2014-03-05 Priority to JP2014043011A priority Critical patent/JP2015171189A/en
2015-09-28 Publication of JP2015171189A publication Critical patent/JP2015171189A/en
In an environment in which electric power from an electric power source is distributed to an electric vehicle and other equipment, for example, charging / discharging of the electric vehicle is performed on a schedule in which power shortage does not occur as much as possible. A charge / discharge management apparatus is configured to install a facility in a forecast target period based on load power record information in which weather record information is associated with the load power record of the facility, and weather forecast information corresponding to the forecast period. Load reservation information including the use reservation time of the electric vehicle is obtained. The charging / discharging management device calculates the necessary remaining amount of storage battery necessary for the storage battery for the electric vehicle to travel during the use reservation time indicated by the acquired use reservation information for each use reservation time. The charge / discharge management device determines the amount of charge or discharge to the storage battery for each time in the prediction target period, based on the prediction result of the load power of the equipment in the prediction target period and the calculated required amount of storage battery. [Selection] Figure 2
The present invention relates to a charge / discharge management device, a charge / discharge management method, and a program.
Electric vehicles that run using a storage battery as an energy source have become widespread.
Charging a storage battery of an electric vehicle is performed using, for example, a power supply facility such as a charging stand. In such a power supply facility for an electric vehicle, for example, it is required to appropriately schedule charging for the electric vehicle in accordance with the characteristics of the storage battery, the use schedule of the electric vehicle, and the like.
Thus, for example, the following electric vehicle charging scheduling system is known. In other words, this electric vehicle charging scheduling system uses the average usage by dividing the power available from the power source by the total number of electric vehicles expected to arrive at the charging station for charging and electric vehicles waiting to be charged. Calculate possible energy. Then, the electric vehicle charging scheduling system distributes the difference between the charging energy required by each electric vehicle and the average available energy to each electric vehicle (see, for example, Patent Document 1).
JP 2012-205425 A
In the electric vehicle scheduling system described in Patent Document 1, for example, control is performed to change the charging current so as to increase in order to complete the charging of the electric vehicle in time for the departure time. Such control is premised on the case where it is not necessary to consider distributing the power from the power source to a load other than charging the electric vehicle, such as a charging facility dedicated to the electric vehicle.
On the other hand, for example, energy management systems such as HEMS (Home Energy Management System) and TEMS (Town Management System) can be configured including a storage battery of an electric vehicle. In the energy management system having such a configuration, for example, if control for increasing the charging current is performed as in Patent Document 1, when the load power used in equipment other than the electric vehicle is large, the power management system is in a power shortage state. there is a possibility.
The present invention has been made in view of such circumstances. In an environment in which power from a power source is distributed to an electric vehicle and other equipment, for example, charging / discharging of the electric vehicle on a schedule in which power shortage does not occur as much as possible. Is intended to be done.
In order to solve the above-described problem, a charge / discharge management apparatus according to an aspect of the present invention includes load power record information in which past track record information indicating weather conditions is associated with past load power record of equipment. Based on the load power record information management unit that stores the load power record information in the load power record information storage unit, the load power record information stored in the load power record information storage unit, and the weather forecast information corresponding to the prediction target period. A load power prediction unit that predicts load power of equipment in a target period, a use reservation information acquisition unit that acquires use reservation information including at least use reservation time of an electric vehicle, and the prediction target acquired by the use reservation information acquisition unit Based on the use reservation information in the period, the remaining battery required amount required for the storage battery to run the electric vehicle in the use reservation time indicated by the use reservation information A storage battery required remaining amount calculation unit to be calculated for each use reservation time, a load power of the facility in the prediction target period predicted by the load power prediction unit, and a storage battery required remaining amount calculated by the storage battery required remaining amount calculation unit. And a scheduling unit that determines a charge amount or a discharge amount to the storage battery every predetermined time in the prediction target period.
Further, in the charge / discharge management apparatus, the use reservation information further includes route information indicating a travel route of the electric vehicle scheduled at a corresponding use reservation time, and the storage battery required remaining amount calculation unit includes the route information. On the basis of the travel distance in the use reservation time estimated based on the above, the required remaining battery capacity for each use reservation time may be calculated.
In the charge / discharge management apparatus, the scheduling unit may convert the load power of the facility in the prediction target period predicted by the load power prediction unit and the storage battery required remaining amount calculated by the storage battery required remaining amount calculation unit. Based on the linear programming problem that minimizes the received power supplied from the power source and the charge / discharge power to the storage battery of the electric vehicle in the prediction target period, to the storage battery every predetermined time in the prediction target period The amount of charge or the amount of discharge may be determined.
Moreover, the charge / discharge management method as one aspect of the present invention includes a load power performance information storage unit that stores load power performance information in which past weather power information indicating past weather conditions is associated with past load power performance of equipment. Load power performance information management step to be stored, load power performance information stored in the load power performance information storage unit, and weather forecast information corresponding to the prediction target period, the load power of the equipment in the prediction target period Based on the use reservation information in the prediction target period acquired by the use reservation information acquisition step, the use reservation information acquisition step of acquiring use reservation information including at least the use reservation time of the electric vehicle, In addition, the remaining amount of storage battery required for the storage battery to run the electric vehicle during the use reservation time indicated by the use reservation information A storage battery required remaining amount calculation step calculated for each use reservation time, a load power of the equipment in the prediction target period predicted by the load power prediction step, and a storage battery required remaining amount calculated by the storage battery required remaining amount calculation step. And a scheduling step for determining a charge amount or a discharge amount to the storage battery every predetermined time in the prediction target period.
In addition, the program as one aspect of the present invention includes a load power performance information storage unit that stores load power performance information in which past weather power information indicating past weather conditions is associated with past load power performance of equipment in a computer. Load power performance information management step to be stored, load power performance information stored in the load power performance information storage unit, and weather forecast information corresponding to the prediction target period, the load power of the equipment in the prediction target period Based on the use reservation information in the prediction target period acquired by the use reservation information acquisition step, the use reservation information acquisition step of acquiring use reservation information including at least the use reservation time of the electric vehicle, Storage battery necessary for the electric vehicle to travel during the use reservation time indicated by the use reservation information. A storage battery required remaining amount calculating step for calculating a required battery remaining amount for each reservation time, a load power of the equipment in the prediction target period predicted by the load power prediction step, and a storage battery calculated by the storage battery required remaining amount calculating step. And a scheduling step for determining a charge amount or a discharge amount of the storage battery for each predetermined time in the prediction target period based on the required remaining amount.
As described above, according to the present invention, in an environment where power from a power source is distributed to an electric vehicle and other facilities, for example, charging / discharging of the electric vehicle is performed on a schedule in which power shortage does not occur as much as possible. The effect of becoming.
It is a figure which shows the structural example of the energy management system which concerns on this embodiment. It is a figure which shows the structural example of the charging / discharging management apparatus which concerns on this embodiment. It is a figure which shows the example of the content of the use reservation information which concerns on this embodiment. It is a figure which shows an example of the use reservation schedule shown by the use reservation information which concerns on this embodiment. It is a figure for demonstrating the storage battery required remaining amount which the storage battery required remaining amount calculation part of the charging / discharging management apparatus which concerns on this embodiment corresponding to the content of the utilization reservation information of FIG. It is a figure which shows an example of the prediction result by the load electric power prediction part of the charging / discharging management apparatus which concerns on this embodiment. It is a figure which shows an example of the charging / discharging schedule which the scheduling part of the charging / discharging management apparatus which concerns on this embodiment determined. It is a figure which shows the example of a process sequence which the charging / discharging management apparatus which concerns on this embodiment performs for the memory | storage of load electric power performance information. It is a figure which shows the example of a process sequence for the charging / discharging management apparatus which concerns on this embodiment to determine a charging / discharging schedule.
[Configuration example of charge / discharge management system]
FIG. 1 shows a configuration example of an energy management system including a charge / discharge management device according to the present embodiment. The energy management system of the present embodiment corresponds to, for example, a HEMS (Home Energy Management System), a TEMS (Town Management System), or the like.
The energy management system shown in FIG. 1 includes an electric vehicle use reservation device 100, a weather information server 200, a charge / discharge management device 300, a charge / discharge stand 400, a facility 500, and an electric vehicle EV.
Further, the charge / discharge management device 300 is connected to each of the electric vehicle use reservation device 100 and the charge / discharge stand 400 via a network such as a LAN (Local Area Network) or a WAN (Wide Area Network) or a predetermined data interface. It is connected so that it can communicate.
The electric vehicle use reservation apparatus 100 receives a use reservation of the electric vehicle EV in accordance with an operation for a reservation made by the user, and manages use reservation information indicating the contents of the received use reservation. Specifically, every time a use reservation is received, the electric vehicle use reservation apparatus 100 stores use reservation information corresponding to the received use reservation.
The use reservation information includes a use reservation time of the electric vehicle EV and route information indicating a travel route of the electric vehicle EV scheduled for the use reservation time.
The weather information server 200 is a server that provides weather information indicating the weather condition of each region. The weather information server 200 can provide, as weather information, weather performance information indicating the past weather condition and weather forecast information indicating the weather condition predicted in advance from the present to a predetermined period.
The weather information server 200 is communicably connected to the charge / discharge management apparatus 300 via the network NW.
The charge / discharge management device 300 performs management related to charging or discharging (charging / discharging) of the storage battery 20 of the electric vehicle EV connected to the charging / discharging stand 400.
The charge / discharge management apparatus 300 uses weather information when performing management related to charge / discharge. The charge / discharge management apparatus 300 appropriately accesses the weather information server 200 via the network NW, and acquires weather information (weather performance information, weather forecast information) from the weather information server 200.
The charging / discharging stand 400 executes charging and discharging of the storage battery 20 in accordance with the connection of the storage battery 20 of the electric vehicle EV. The electric vehicle EV is a vehicle that travels by driving a motor using the electric power stored in the storage battery 20.
The operation of charging or discharging the storage battery 20 of the charging / discharging stand 400 is controlled by the charging / discharging management device 300.
The charging / discharging stand 400 uses the power supplied from the power source 10 when charging the storage battery 20. The charge / discharge stand 400 can also discharge the power stored in the storage battery 20 and supply the discharged power to the facility 500.
The facility 500 is various devices that operate by receiving electric power, and is provided in parallel to the charge / discharge stand 400 with respect to the power source 10. The facility 500 is a load in the energy management system of the present embodiment.
The power source 10 is, for example, a commercial AC power source. When the charging / discharging stand 400 in the energy management system charges the storage battery 20, the power source 10 supplies the charging / discharging stand 400 with electric power for charging, and the facility 500. Supply power to the load at.
[Configuration example of charge / discharge management device]
FIG. 2 shows a configuration example of the charge / discharge management apparatus 300. The charge / discharge management apparatus 300 includes a load power measurement unit 301, a weather information acquisition unit 302, a load power record information management unit 303, a load power record information storage unit 304, a load power prediction unit 305, a use reservation information acquisition unit 306, and a storage battery required. A remaining amount calculation unit 307 and a scheduling unit 308 are provided.
The load power measurement unit 301 measures the load power of the facility 500 that is a load in the energy management system of the present embodiment.
The weather information acquisition unit 302 acquires weather information (weather performance information, weather forecast information) from the weather information server 200.
Specifically, for example, the weather information acquisition unit 302 accesses the weather information server 200 via the network NW (not shown in FIG. 2), and requests weather performance information or weather forecast information. And the weather performance information or weather forecast information which the weather information server 200 transmitted in response to the request is received.
The load power record information management unit 303 stores load power record information in which the load power record of the facility 500 for each past day (unit period) is associated with the same weather condition for each past day, for example. Stored in the unit 304.
For this purpose, the load power record information management unit 303 acquires the measurement result of the load power measurement unit 301 for each past day as the load power record of the facility 500. Moreover, the load electric power performance information management part 303 acquires the weather performance information in the same past 1 day which the weather information server 200 provides as a weather condition.
The load power record information management unit 303 may acquire the load power record and weather record information for each past day, for example, at a predetermined time every predetermined day. Then, the load power record information management unit 303 may store the load power record information for one day acquired as described above in the load power record information storage unit 304.
The load power record information storage unit 304 stores load power record information.
The load power prediction unit 305 predicts the load power of the facility 500 in the prediction target period based on the load power record information stored in the load power record information storage unit 304 and the weather forecast information corresponding to the prediction target period. Here, the prediction target period in the present embodiment is, for example, the next day.
The load power prediction unit 305 predicts the load power of the facility 500 for the next day, for example, as follows. The load power prediction unit 305 inputs the next day's weather forecast information acquired from the weather information server 200 by the weather information acquisition unit 302.
The load power prediction unit 305 loads the load power associated with the weather result information approximated to the weather state indicated by the weather forecast information for the next day from the load power result information stored in the load power result information storage unit 304. Get achievements. The load power prediction unit 305 predicts the load power for the next day based on the acquired load power record.
For example, the load power prediction unit 305 directly uses the load power record associated with the weather record information closest to the weather condition indicated by the next day weather forecast information as the load power prediction result for the next day. You may apply.
Alternatively, the load power prediction unit 305 averages the load power results associated with the next day's weather forecast information and the weather result information of the approximate rate within a certain range, and the load power prediction result for the next day It is good.
The content of the prediction result of the load power may be anything that indicates the load power for every predetermined time (for example, 1 hour) in the next day, for example.
The use reservation information acquisition unit 306 acquires use reservation information from the electric vehicle use reservation apparatus 100. Here, the use reservation information acquisition unit 306 may acquire use reservation information for the next day that is the prediction target period. Further, the use reservation information includes the use reservation time and the route information indicating the travel route of the electric vehicle EV scheduled for the use reservation time as described above.
FIG. 3 shows an example of the contents of the usage reservation information for one day acquired by the usage reservation information acquisition unit 306. Each use reservation information shown in FIG. 3 includes one or more unit reservation information. One unit reservation information is information corresponding to the use reservation of the electric vehicle EV in one continuous time zone. The use reservation information in FIG. 3 includes two unit reservation information 1 and 2.
One unit reservation information includes each information of use reservation time and route information. The use reservation time indicates the use time scheduled for the reserved electric vehicle EV, and includes, for example, use start time and use end time. The use start time indicates a scheduled time to start using the electric vehicle EV. The use end time indicates a scheduled time for ending use of the electric vehicle EV.
The route information indicates the travel route of the electric vehicle EV scheduled for the corresponding use reservation. The route information is, for example, information on one or more relay points on the travel route of the electric vehicle EV. The relay point may be indicated by latitude and longitude, for example. Or you may show by a point name etc. In addition, since the electric vehicle EV in this case is in a state of being connected to the charging / discharging stand 400 while waiting without being used, for example, the charging / discharging stand 400 is installed at the departure point and the arrival point. If it is a place.
FIG. 4 shows an example of the contents of the use reservation schedule indicated by the use reservation information for one day illustrated in FIG. In FIG. 3, a time zone indicated as “free” indicates a time zone that is not reserved for use, and a time zone indicated as “use” indicates a time zone that is already reserved for use.
In the example of FIG. 4, corresponding to the unit reservation information 1 and 2 in FIG. 3, 1 hour from 11:00 to 12:00 and 2 hours from 16:00 to 18:00 are reserved for use. It has been shown that Further, it is indicated that the remaining time zones from 8:00 to 11:00, 12; 00 to 16:00, and 18:00 are not reserved for use.
The storage battery required remaining amount calculation unit 307 calculates the storage battery required remaining amount based on the use reservation information in the prediction target period (next day) acquired by the use reservation information acquisition unit 306.
The storage battery required remaining amount here is a remaining amount necessary for the storage battery 20 of the electric vehicle EV when the electric vehicle EV is used for the usage reservation time indicated by the usage reservation information acquired by the usage reservation information acquisition unit 306.
The storage battery required remaining amount calculation unit 307 calculates the storage battery required remaining amount based on the use reservation information of FIG. 3 as follows, for example.
The storage battery required remaining amount calculation unit 307 first estimates the travel distance corresponding to the use reservation time of the unit reservation information 1 using the route information of the unit reservation information 1 in the use reservation information of FIG. For this reason, the storage battery required remaining amount calculation unit 307 searches for a route when the charge / discharge station 400 is set as a departure point and an arrival point using information on a relay point indicated by the route information. And the storage battery required remaining amount calculation part 307 should just use the distance calculated about the searched path | route as the estimation result about the travel distance corresponding to the utilization reservation time of the unit reservation information 1. FIG.
The storage battery required remaining amount calculation unit 307 calculates the required remaining amount of storage battery necessary for the use reservation time of the unit reservation information 1 using the estimated travel distance (estimated travel distance) and the travel discharge characteristics obtained in advance. To do.
The traveling discharge characteristic indicates, for example, a distance that can travel around 1 kWh. The traveling discharge characteristic can be obtained in advance according to the specification of the electric vehicle EV, for example. Alternatively, the travel discharge characteristics can be obtained in advance based on the results of the travel distance of the electric vehicle EV and the used capacity of the storage battery 20.
With reference to FIG. 5, an example of a method for calculating the required remaining amount of storage battery corresponding to the contents of the usage reservation information in FIG. 3 will be described.
As shown in FIG. 5, the traveling discharge characteristic of the electric vehicle EV in this case is obtained in advance as 6 km · kWh. In FIG. 5, the estimated travel distance estimated corresponding to the use reservation time (11:00 to 12:00) of the unit reservation information 1 is 12 km, and the use reservation time (16 In the example, the estimated travel distance estimated corresponding to: 00 to 18:00 is 42 km.
The required amount of storage battery can be obtained, for example, by dividing the estimated travel distance by the travel discharge characteristics. Therefore, the storage battery required remaining amount calculation unit 307 calculates 2 kWw as the storage battery required remaining amount in the use reservation time (11: 00 to 12:00) of the unit reservation information 1. Moreover, the storage battery required remaining amount calculation part 307 calculates 7 kWw as a storage battery required remaining amount in the utilization reservation time (16:00 to 18:00) of the unit reservation information 2. FIG.
Returning to FIG. Based on the load power of the facility in the next day (prediction target period) predicted by the load power prediction unit 305 and the storage battery required remaining amount calculated by the storage battery required remaining amount calculation unit 307, the scheduling unit 308 The charge amount or the discharge amount to the storage battery 20 every predetermined time in one day is determined.
In the following, the charge amount or discharge amount to the storage battery 20 for each predetermined time in the prediction target period determined by the scheduling unit 308 is also referred to as a charge / discharge schedule.
The scheduling unit 308 determines the charge / discharge schedule by solving the following linear programming problem using, for example, linear programming as follows.
In linear programming problem scheduling unit 308 solves defines variables and x t. Variable x t denotes the charge and discharge command value to the discharge station 400 at each time (hourly). Discharge command value x t corresponds to the charge and discharge power of the battery 20 at each time.
In the linear programming problem solved by the scheduling unit 308, the objective function is
minimize k 1 xz + k 2 xy (Formula 1)
It is represented by Expression 1 indicates that the total value of the received power z and the charge / discharge command value y should be minimized in one day (prediction target period).
The received power z is power that is supplied from the power source 10 by the facility 500 and the storage battery 20 of the electric vehicle EV in the energy management system. The received power z is the same as the load power of the facility 500 unless the storage battery 20 is charged / discharged. In addition, when the storage battery 20 is discharged and the discharge power is supplied to the facility 500, the received power z is the same as the value obtained by subtracting the discharge power of the storage battery 20 from the load power of the facility 500. Further, when the storage battery 20 is charged and the power from the power source 10 is consumed together with the facility 500, the received power z is the same as the total value of the load power of the facility 500 and the charged power of the storage battery 20. .
In the linear programming problem solved by the scheduling unit 308, seven constraint conditions represented by the following equations 2 to 8 are defined.
x min ≤ x t ≤ x max (Equation 2)
In Equation 2, x min is the minimum charging power and x max is the maximum charging power.
SOC min ≦ SOC t ≦ SOC max (Equation 3)
In Equation 3, SOC t is the remaining battery level at time t, SOC min is the minimum remaining battery level, and SOC max is the maximum remaining battery level.
SOC t + 1 = SOC t −x t × Δt (Formula 4)
Formula 4 shows the storage battery remaining amount according to progress of time.
SOC Ts ≧ SOC mov ... (Formula 5)
In Equation 5, SOC Ts indicates the remaining battery capacity at the use start time, and SOC mov indicates the required remaining battery capacity at the reserved use time.
SOC Te ≧ SOC Ts −SOC mov (Formula 6)
In Equation 6, SOCTE indicates the remaining storage battery capacity at the use end time.
LOAD t −x t × α t ≦ z (Expression 7)
In Equation 7, LOAD t indicates load power at each time, and α t indicates whether or not the electric vehicle EV is reserved at each time (reserved = 0, no reservation = 1).
y = sum (x t ) (Formula 8)
Formula 8 shows the total value of the charge / discharge command value at each time.
FIG. 6 illustrates an example of the load power of the facility 500 predicted by the load power prediction unit 305 for the next day (prediction target period).
FIG. 7 shows the charging / discharging schedule determined by the scheduling unit 308 based on the prediction result of the load power of the facility 500 shown in FIG. 6 and the calculation result of the remaining storage battery required amount shown in FIG.
In FIG. 7, the determination result by the scheduling unit 308 regarding the charging power or discharging power (charging / discharging power) to the storage battery 20 every hour is shown together with the prediction result of the load power of the facility 500 and the received power.
Specifically, 8: 00,9: In each time of 00, have been shown to be discharged by the scheduling unit 308 calculates the positive charge and discharge command value x t. Here, 8: 00,9: received power at each time of 00 is made smaller than the positive amount corresponding load power equipment 500 in response to charge and discharge command value x t.
Further, 10: in the 00 times, has been shown to be charged by the negative charge and discharge command value x t the scheduling unit 308 is calculated. Here 10:00 received power at the time of, and is larger than the load power amount corresponding equipment 500 corresponding to the negative charge and discharge command value x t.
At the time of 11:00, since the electric vehicle EV is in use and is not connected to the charge / discharge stand 400, the charge / discharge command value xt is “0”, that is, no charge / discharge is performed. Has been.
At time 12:00, it has shown that to be charged by the negative charge and discharge command value x t the scheduling unit 308 is calculated.
13 14:00 15:00 at each time of 00, respectively, have been shown to be discharged by the scheduling unit 308 calculates a positive charge and discharge command value x t.
At each time of 16:00 and 17:00, since the electric vehicle EV is in use and is not connected to the charge / discharge stand 400, the charge / discharge command value xt is “0”, and charge / discharge is performed. It is shown not to do.
In 18:00 time, it has been shown to be charged by the scheduling unit 308 is negative calculated discharge command value x t.
Scheduling unit 308, in response to reaching the next day is a prediction target day, for example, by charging and discharging command value x t per hour obtained as described above charging and discharging of the electric vehicle EV battery 20 The charging / discharging stand 400 is controlled to be performed.
As described so far, the charge / discharge management apparatus 300 according to the present embodiment predicts the load power of the facility 500 and calculates the necessary remaining battery capacity according to the use reservation schedule of the electric vehicle EV. And the charging / discharging management apparatus 300 determines the charging / discharging schedule to the storage battery 20 so that the receiving power from the power source 10 in one day and the charging / discharging electric power according to charging / discharging command value may become the minimum, for example. Therefore, in the present embodiment, the charge / discharge schedule is determined so that the storage battery 20 is charged as efficiently as possible while securing the power used in the facility 500. Further, for example, when the load of the facility 500 is heavy and the conditions for using the stored power of the storage battery 20 are satisfied, the discharged power discharged from the storage battery 20 is supplied as the power used by the load in the facility 500. can do.
As a result, in the environment where the power from the power source is distributed to the electric vehicle and other facilities as in the energy management system of the present embodiment, charging / discharging of the storage battery 20 of the electric vehicle EV is performed on a schedule in which power shortage does not occur as much as possible. It can be performed.
The flowchart of FIG. 8 shows an example of a processing procedure executed by the charge / discharge management apparatus 300 in relation to storage of load power record information.
For example, when it is time to store the load power record information for one day corresponding to today, the load power record information management unit 303 in the charge / discharge management apparatus 300 measures the load power for one day corresponding to today. The result is acquired from the load power measuring unit 301 (step S101).
Moreover, the weather information acquisition part 302 acquires the weather performance information for one day corresponding to today from the weather information server 200 (step S102).
The load power record information management unit 303 sets the load power measurement result acquired in step S101 as one day's load power record corresponding to today, and associates the load power record with the weather record information acquired in step S102. The load power record information is created (step S103).
The load power record information management unit 303 stores the load power record information created in step S103 in the load power record information storage unit 304 (step S104).
By repeating the processes of steps S101 to S104, for example, every day, the load power record information for each day in the past is accumulated in the load power record information storage unit 304.
The flowchart of FIG. 9 shows an example of a processing procedure for the charge / discharge management device 300 to determine a charge / discharge schedule for the prediction target date.
When the time for determining the charge / discharge schedule for the prediction target day is reached, for example, the weather information acquisition unit 302 acquires the weather forecast information for the prediction target day from the weather information server 200 (step S201).
Next, the load power prediction unit 305 predicts the load power of the prediction target day using the load power record information stored in the load power record information storage unit 304 and the weather forecast information acquired in step S201. (Step S202).
At this time, the load power prediction unit 305, for example, as described above, in the load power result information stored in the load power result information storage unit 304, the weather that approximates the weather state indicated by the weather forecast information acquired in step S201. A load power record associated with the record information is acquired. Then, the load power prediction unit 305 may predict the load power based on the acquired load power record.
Further, the use reservation information acquisition unit 306 acquires use reservation information on the prediction target date from the electric vehicle use reservation apparatus 100 (step S203).
The storage battery required remaining amount calculation unit 307 uses the use reservation information acquired in step S203 and the travel discharge characteristics obtained in advance, as described in FIG. The required remaining amount of storage battery corresponding to is calculated (step S204).
Note that the series of processes in steps S201 and S202 and the series of processes in steps S203 and S204 may be executed in the reverse order, or may be executed in parallel.
Next, as described with reference to FIGS. 5 to 7, the scheduling unit 308 uses the load power predicted in step S <b> 202 and the storage battery necessary remaining amount calculated in step S <b> 204 to charge on the prediction target date. A discharge schedule is determined (step S205).
The scheduling unit 308 controls the charging / discharging stand 400 according to the charging / discharging schedule determined in step S205 according to the prediction target date (step S206). That is, for example, as charge or discharge due to power according to the determined each time the hour charge and discharge command value x t is performed in an electric vehicle EV battery 20, to control the charging and discharging stand 400.
In the configuration of FIG. 1, an example in which there is one electric vehicle EV included in the energy management system is given, but there may be a plurality of electric vehicles EV included in the energy management system.
In the description so far, the charging / discharging schedule is determined for an electric vehicle not equipped with a gasoline engine. However, the charging / discharging schedule is determined for a hybrid car that uses a motor driven by a storage battery and a gasoline engine. It is good. That is, the electric vehicle in the present embodiment may include a hybrid car.
2 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. The charging / discharging schedule may be determined by the above. Here, the “computer system” includes an OS and hardware such as peripheral devices.
Further, the “computer system” includes a website providing environment (or display environment) if a network such as the Internet is used.
DESCRIPTION OF SYMBOLS 10 Power source 20 Storage battery 100 Electric vehicle utilization reservation apparatus 200 Weather information server 300 Charging / discharging management apparatus 301 Load power measurement part 302 Weather information acquisition part 303 Load power performance information management part 304 Load power performance information storage part 305 Load power prediction part 306 Usage reservation information acquisition unit 307 Remaining battery required amount calculation unit 308 Scheduling unit 400 Charge / discharge stand 500 Equipment EV Electric vehicle
A load power performance information management unit that stores load power performance information in association with weather performance information indicating past weather conditions in a load power performance information storage unit with respect to the load power performance of the facility in the past,
A load power prediction unit that predicts the load power of the facility in the prediction target period based on the load power record information stored in the load power record information storage unit and the weather forecast information corresponding to the prediction target period;
A use reservation information acquisition unit for acquiring use reservation information including at least a use reservation time of an electric vehicle;
Based on the use reservation information in the prediction target period acquired by the use reservation information acquisition unit, the remaining battery charge required for the storage battery to run the electric vehicle in the use reservation time indicated by the use reservation information is used. Storage battery required remaining amount calculation unit to calculate for each,
Based on the load power of the facility in the prediction target period predicted by the load power prediction unit and the storage battery required remaining amount calculated by the storage battery required remaining amount calculation unit, to the storage battery every predetermined time in the prediction target period A charge / discharge management apparatus comprising: a scheduling unit that determines a charge amount or a discharge amount of the battery.
The use reservation information further includes route information indicating a travel route of the electric vehicle scheduled at a corresponding use reservation time,
The storage battery required remaining amount calculation unit,
The charge / discharge management apparatus according to claim 1, wherein a remaining storage battery required amount for each use reservation time is calculated based on a travel distance in the use reservation time estimated based on the route information.
The scheduling unit includes
Based on the load power of the facility in the prediction target period predicted by the load power prediction unit and the required storage battery remaining amount calculated by the storage battery required remaining amount calculation unit, the power received from the power source in the prediction target period The charge amount or the discharge amount to the storage battery every predetermined time in the prediction target period is determined by solving a linear programming problem that minimizes the power and the charge / discharge power to the storage battery of the electric vehicle. 2. The charge / discharge management device according to 2.
Load power performance information management step for storing, in the load power performance information storage unit, load power performance information in which past weather power information indicating past weather conditions is associated with the load power performance of the facility in the past,
A load power prediction step for predicting the load power of the facility in the prediction target period based on the load power record information stored in the load power record information storage unit and the weather forecast information corresponding to the prediction target period;
Use reservation information acquisition step for acquiring use reservation information including at least use reservation time of an electric vehicle;
Based on the use reservation information in the prediction target period acquired by the use reservation information acquisition step, the remaining battery charge required for the storage battery to run the electric vehicle in the use reservation time indicated by the use reservation information is used. Storage battery required remaining amount calculation step to calculate for each,
Based on the load power of the facility in the prediction target period predicted by the load power prediction step and the storage battery required remaining amount calculated by the storage battery required remaining amount calculation step, to the storage battery every predetermined time in the prediction target period And a scheduling step for determining a charge amount or a discharge amount of the battery.
Based on the load power of the facility in the prediction target period predicted by the load power prediction step and the storage battery required remaining amount calculated by the storage battery required remaining amount calculation step, to the storage battery every predetermined time in the prediction target period And a scheduling step for determining a charge amount or a discharge amount of the program.
JP2014043011A 2014-03-05 2014-03-05 Device and method for charge/discharge management, and program Pending JP2015171189A (en)
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JP2014043011A Pending JP2015171189A (en) 2014-03-05 2014-03-05 Device and method for charge/discharge management, and program
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