JP7368927B1 - power management system - Google Patents

Abstract

An object of the present invention is to provide a power management system that easily stabilizes the outlook for power planning. [Solution] The power management system 1 according to the present invention includes a schedule database 3 in which the scheduled commuting days of employees to the workplace where they work are recorded, and electricity that the employees use to discharge to the equipment of the business office. Based on the employee database 4, which records whether or not a car (EV2) is used for work, the schedule database 3, and the employee database 4, the system receives supplies from all EV2s commuting to work on a particular day. and a control unit 5 that outputs information on the total storage capacity, which is the amount of power consumed. [Selection diagram] Figure 1

Description

The present invention relates to a power management system.

Patent Document 1 discloses supplying (selling electricity) power stored in an electric vehicle (also referred to as an EV) to a power grid.

Japanese Patent Application Publication No. 2016-123270

EVs can function not only as moving objects, but also as storage batteries that can store and discharge electricity when not traveling. For example, electric power can be supplied from the EV to equipment installed in facilities such as offices and factories during times when the equipment consumes a lot of power.

Incidentally, the power storage capacity, which is the amount of power that equipment within a facility can receive from EVs, is determined by the number of EVs parked within the premises of the facility. However, in recent years, due to the spread of telecommuting, not all employees commute to work, so for example, it may not be possible to know how much energy storage capacity the equipment can secure the next day, which may affect power planning. There were times when it had a negative impact.

The present invention provides a power management system that easily stabilizes the outlook for power planning.

A power management system according to one aspect of the present invention includes:
A schedule database that records the scheduled commuting dates for employees to work at their workplaces;
an employee database in which it is recorded whether or not the employee uses an electric vehicle to discharge electricity to the equipment of the business office when going to work;
and a control unit that outputs information on a total storage capacity, which is the amount of power that can be supplied from all the electric vehicles commuting to work on a specific day, based on the schedule database and the employee database.

According to the present invention, it is possible to provide a power management system that easily stabilizes the outlook for power planning.

FIG. 1 is a block diagram of a power management system according to this embodiment. FIG. 2 is a diagram showing an example of a schedule database on a specific day. FIG. 3 is a diagram showing an example of the employee database on the same day as FIG. 2. FIG. 4 is a flowchart when the control unit notifies an employee.

Embodiments of the present invention will be described below with reference to the drawings. The dimensions of each member shown in this drawing may differ from the actual dimensions of each member for convenience of explanation.

The power management system 1 is a system that manages the exchange of power between an electric vehicle (hereinafter referred to as EV2) used by an employee to go to work and a business office. In this embodiment, a contract is entered into between a business owner and an employee to the effect that electric power may be supplied to the business office from the EV 2 that the employee uses for commuting. In such contracts, the maximum amount of electricity that can be supplied at one time, the compensation for supplying electricity, etc. are determined.
In this embodiment, an office will be exemplified as an example of a business establishment. FIG. 1 is a block diagram of a power management system 1 according to this embodiment. As shown in FIG. 1, the power management system 1 includes a schedule database 3, an employee database 4, and a control unit 5.

FIG. 2 is a diagram showing an example of the schedule database 3 on June 15, 2022 (an example of a specific day). The schedule database 3 records employee numbers that identify employees, the scheduled arrival and departure times for each employee, and the attendance type that indicates where the employee will work. Regarding the work attendance type, "office" indicates that the employee comes to the office to work. "Work from home" indicates that the employee works from the employee's home.

FIG. 3 is a diagram showing an example of the employee database 4 on the same day as FIG. 2. The employee database 4 records the employee number and the available power storage amount, which is the maximum amount of power that can be supplied from the EV 2 to the office. The amount of stored power that can be used may vary depending on the type of EV2 that the employee rides and the contract details that specify the amount of power that can be provided to the office from the EV2, or it may be the same amount of stored power that can be used for all EV2s. This is because the capacity of the storage battery installed in the EV2 differs depending on the vehicle model. Furthermore, the number of contributions within the month indicating the number of times EV2 contributed to power supply to the office within the month, the amount of power received within the month indicating the amount of power supplied from EV2 to the office within the month, etc. are recorded in the employee database 4. You can.
Note that although the schedule database 3 and employee database 4 of this embodiment only list employees who have agreed to be managed by the power management system 1, information on employees who do not participate in the power management system 1 is May be recorded.

Next, the control unit 5 in the power management system 1 will be explained using FIGS. 1 to 3. As shown in FIG. 1, the control unit 5 includes a total storage capacity calculation unit 51. The total power storage capacity is the sum total of the usable power storage amount that can be supplied from the EV2. The total storage capacity calculation unit 51 calculates the total storage capacity for each time period.

However, the total storage capacity can change depending on the time of day. For example, as shown in FIG. 2, employees with employee numbers 1234 and 5678 work at the office from 9:00 to 12:00. Therefore, when calculated from FIG. 3, the total storage capacity is 80, which is the sum of the available storage amount of 30 for EV2 of employee number 1234 and the available storage amount of 50 for EV2 of employee number 9012. However, since employee number 9012 leaves work at 12:00, only employee number 1234 is at work from 12:00 to 12:50. Therefore, the total power storage capacity is 30, which is the usable power storage amount of EV2 of employee number 1234.

The obtained total storage capacity is recorded in a recording device (not shown) in the control unit 5 and notified to business owners and employees, so that business owners and employees can check the total storage capacity for each time period of the day. You can know the storage capacity.

The power storage capacity calculated in this way is power that the business office can freely use, separate from the power supplied to the business office from an electric power supply company or the like. For this reason, for example, a business operator can contract with an electricity supply company for a maximum amount of electricity (demand amount) that is lower than the amount of electricity actually required for the business, and then cover the electricity shortage with storage capacity. . This allows businesses to reduce the electricity charges they pay to power supply companies.
According to the power management system 1 according to the present embodiment, the total power storage capacity calculation unit 51 refers to the schedule database 3 and the employee database 4, and calculates the total power storage capacity for each time period, which is the amount of power that can be supplied from the EV 2. Calculate and output the result. Even in situations where it is difficult to intuitively grasp the total power storage capacity due to working from home or flexible working hours, business owners can use the output total power storage capacity to determine when to perform work that consumes a large amount of electricity. This makes it easier to make business plans. In addition, by performing work that consumes a large amount of electricity during times when a large amount of total storage capacity can be secured, investments in additional power generation equipment and increases in electricity rates can be suppressed.

Further, in the employee database 4 of this embodiment, the amount of available electrical storage is recorded according to the EV2 of each employee. Thereby, the total storage capacity can be estimated more accurately.

Next, a case will be described in which the total power storage capacity calculation unit 51 calculates the total power storage capacity and, as a result, the total power storage capacity is insufficient with respect to the amount of power required for the business plan scheduled in advance.

As shown in FIG. 1, the control unit 5 is communicably connected to the required power prediction unit 11. The required power prediction unit 11 can calculate the required amount of power, which is the amount of power required for the business plan, by inputting the business plan. The control unit 5 can acquire the required power amount from the required power prediction unit 11.

The control unit 5 is communicably connected to the power divider 12. The power distributor 12 is connected to the EV 2 and can start and stop the supply of power from the office to the EV 2 and the supply of power from the EV 2 to the office.

The control unit 5 includes a communication device 53. The communication device 53 is capable of communicating with the employee terminal 13 held by the employee. Via the communication device 53, the control unit 5 can notify the employee.

FIG. 4 is a flowchart when the control unit 5 notifies an employee. Note that FIG. 4 illustrates a case where the power management system 1 manages power on June 15, 2022 (an example of a specific day), for example. Further, steps S1 to S4 and S6 are performed by the day before June 15, 2022. Step S5 will be performed after June 15, 2022. First, the control unit 5 acquires the required power amount from the required power prediction unit 11 for June 15, 2022 (step S1). Next, the control unit 5 calculates the total power storage capacity for each time period as described above for June 15, 2022 (step S2).

Here, the control unit 5 compares the total power storage capacity and the required power amount, and determines whether the total power storage capacity always exceeds the required power amount (step S3). If there is a time period in which the total storage capacity is lower than the required power amount (No in step S3), the control unit 5 notifies employees who are scheduled to work from home or take vacation on this day to urge them to come to the office. (Step S4).

When employees switch from working from home or planning vacations to coming to the office, the total storage capacity increases, potentially exceeding the amount of electricity needed. In this way, by providing notification, it can be expected that the business can be carried out as planned without changing the business plan or purchasing a large amount of electricity from the electric power company.

Notifications do not necessarily have to be made to all employees. For example, in FIG. 2, three employees with employee numbers 3456, 2345, and 6789 are scheduled to work from home. If any of these employees comes to work and the total storage capacity is sufficient to cover the required amount of electricity, there is no need to notify employee number 7890 who is scheduled to take leave. The control unit 5 notifies at least the minimum number of employees whose total storage capacity exceeds the required amount of electricity when they change to work in the office.

Among the employees who notified in step S4, the control unit 5 records contribution information in the employee database 4 via the contribution information recording unit 52 for employees who have changed their schedule to actually work on a specific day. do. In the example of FIG. 3, the control unit 5 increases the count of the number of contributions within the month for the employee by 1 and adds the amount of power received from the EV 2 to the amount of received power within the month as a record of contribution information.

In this way, by the control unit 5 outputting the contribution information, the office business operator can utilize the contribution information for employees who have contributed to securing power storage capacity by overturning their schedule of not coming to work and coming to work. . For example, based on contribution information, businesses can provide benefits to employees. Benefits make it easier for employees to respond to notifications, making it easier for employees to secure total storage capacity for the amount of electricity they need.

If the total storage capacity always exceeds the required power amount on a specific day (Yes in step S3), the control unit 5 allows employees who are scheduled to work at the office on this day to schedule work from home or on vacation. You may be notified that the change may be made (step S6).

In this way, if it seems possible to secure an excessive amount of power storage capacity, it becomes easier to respond to a request to reduce the attendance rate, for example, by notifying the user that the employee may change to vacation or working from home.

Regarding the number of people to be notified in step S6, it is desirable to issue notifications so that the total storage capacity will not fall below the required amount of power at all times, even if all of the notified employees change their schedules to work from home or take vacations. This makes it possible to secure sufficient total power storage capacity while reducing the attendance rate.

If excess storage capacity is likely to be available, contribution information may be used to prioritize employees to be notified of leave or work from home.

For example, in Figure 2, for three employees with employee numbers 1234, 5678, and 9012 who are scheduled to work, the priority order for notification is set to (1) employee number 1234, (2) employee number 9012, and (3) employee number 5678. It may be done in this order. This is because the number of contributions within the month is highest in this order.

As another example, the order of priority for notification may be (1) employee number 1234, (2) employee number 5678, and (3) employee number 9012. This is because the amount of power received within the month is highest in this order.

In this way, if there is sufficient total storage capacity, employees with high contributions can be given more opportunities to choose their work style by notifying them that they can change to vacation or working from home depending on their contribution information. You can give a lot.

The present invention has been described above based on the embodiments. This embodiment is an example of the present disclosure, and is not limited to the embodiment described above, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, numerical value, form, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as they can disclose the present invention, and are not limited.

For example, in the present embodiment, when the total storage capacity and the required amount of electricity are compared, and if there is a time period in which the total storage capacity is less than the required amount of electricity, the control unit will notify the employee who is scheduled to work from home or take vacation. We explained how to send notifications to employees to encourage them to come to the office. However, the comparison with the required power amount is not limited to the example of this embodiment.

For example, when comparing the total power storage capacity and the total contracted power amount supplied by the electricity supply company with the required power amount, the total power storage capacity and the contracted power amount supplied by the power supply company are less than the required power amount. If there is a time slot, the control unit may notify employees who are scheduled to work from home or take vacation to urge them to come to the office. The number of people to be notified may be determined so that at least the sum of the total power storage capacity and the contracted power amount exceeds the required power amount when all of the notified employees go to work in the office. Furthermore, the system may be configured such that contribution information is output when an employee who was not scheduled to come to work comes to work in accordance with the notification.

In addition, if there is a time period in which the total storage capacity and the contracted amount of electricity supplied by the electricity supply company exceeds the required amount of electricity, the control department will notify employees who are scheduled to go to the office to take leave or work from home. You may notify that the changes may be made. The number of people to be notified may be determined so that even if everyone who has received the notification goes on vacation or changes to working from home, the total power storage capacity and contracted power amount will exceed the required power amount.

In either case, the same effects as in this embodiment can be obtained.

1 Power management system 2 EV
3 Schedule database 4 Employee database 5 Control unit 11 Required power prediction unit 12 Power distributor 13 Employee terminal 51 Total storage capacity calculation unit 52 Contribution information recording unit 53 Communication device

Claims (11)

A schedule database that records the scheduled commuting dates for employees to work at their workplaces;
an employee database in which it is recorded whether or not the employee uses an electric vehicle to discharge electricity to the equipment of the business office when going to work;
a control unit that outputs information on a total storage capacity, which is the amount of power that can be supplied from all the electric vehicles commuting to work on a specific day, based on the schedule database and the employee database. system. The employee database records an available amount of power storage, which is a power storage capacity that can be used for discharging to the equipment of the business office, in each of the electric vehicles used by each employee.
The power management system according to claim 1. The control unit includes:
Furthermore, obtain a predicted power consumption amount, which is the amount of power consumed by the equipment on a specific day,
If the total power storage capacity is less than the predicted power consumption amount, an employee who uses the electric vehicle for commuting to discharge electricity to the facility and who does not plan to commute on a particular day will receive a specific Provides notifications to encourage people to commute during the day,
The power management system according to claim 1. The control unit is configured to at least control the total power storage capacity to exceed the predicted power consumption amount when all employees who have received the notification change their schedules to commute to work on a specific day in accordance with the notification. giving said notice to the necessary number of employees;
The power management system according to claim 3. The control unit includes:
Furthermore, obtain a predicted power consumption amount, which is the amount of power consumed by the equipment on a specific day,
An employee who uses the electric vehicle for commuting to discharge electricity to the facility when the sum of the total storage capacity and the contracted power amount supplied by the electricity supply company is less than the predicted power consumption amount, Sending notifications to employees who do not plan to commute on a specific day to encourage them to commute on a specific day;
The power management system according to claim 1. The control unit determines that when all employees who have received the notification change their schedules to commute to work on a specific day in accordance with the notification, the total power storage capacity and the contracted power amount are equal to the power consumption. providing said notification to at least the required number of employees in excess of the expected amount;
The power management system according to claim 5. When the control unit determines that the employee who received the notification has come to work on a specific day, the control unit outputs contribution information.
The power management system according to any one of claims 3 to 6. When the control unit determines that the total power storage capacity exceeds the predicted power consumption amount, the control unit controls the electric vehicle that is used for discharging electricity to the equipment when going to work and is scheduled to work on a specific day. Notifying employees that they may take vacation or work from home on specific dates;
The power management system according to claim 3. The control unit determines the number of employees such that the total power storage capacity does not fall below the predicted power consumption amount if all employees who received the notification change their schedules so as not to commute on a specific day in accordance with the notification. giving the said notice to the employees of
The power management system according to claim 8. When the control unit determines that the sum of the total power storage capacity and the contracted power amount exceeds the predicted power consumption amount, the control unit controls an employee who uses the electric vehicle for discharging to the equipment when going to work, Notifying employees who are scheduled to work on certain days that they may take vacation or work from home on certain days;
The power management system according to claim 5. The control unit determines that when all employees who have received the notification change their schedules so as not to commute on a specific day in accordance with the notification, the total of the recorded total storage capacity and the contracted power amount is equal to the power consumption. giving said notification to a number of employees not less than the predicted amount;
The power management system according to claim 10.

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