JP2015015800A - Control device, and power management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely reduce a voltage of an electric power system during a countermeasure period while using a secondary battery mounted on an electric vehicle.SOLUTION: A control device 50 is disposed at a part or all of a plurality of users receiving power from an electric power system 30 and controls operation of a power conversion device 42 charging/discharging a secondary battery 41 for traveling mounted on an electric vehicle 40. The control device 50 comprises an instruction unit 521 and an adjustment unit 522. The instruction unit 521 regards a period when a voltage of the electric power system 30 is expected to exceed an upper limit value of a limited range as a countermeasure period. In the countermeasure period, the instruction unit 521 instructs the power conversion device 42 to charge the secondary battery 41 so that the voltage of the electric power system is maintained within the limited range. The adjustment unit 522 adjusts a residual capacity of the secondary battery 41 prior to the countermeasure period so that charging the secondary battery becomes possible to maintain the voltage of the electric power system 30 within the limited range during the countermeasure period.

Description

  The present invention relates to a control device that controls charging and discharging of a storage battery, and a power management system including the control device.

  2. Description of the Related Art In recent years, power supply facilities capable of reverse power flow to a power system, such as solar power generation facilities, have been spreading. The electric power generated by the power supply facility is consumed by the electric load provided at the consumer, and is also reversely flowed to the power system.

  Among power supply facilities, a power generation facility that converts natural energy such as sunlight, wind power, hydropower, and geothermal heat into power is difficult to artificially adjust the generated power. This type of power generation equipment includes a power conversion device (power conditioner), and it is possible to suppress the output by reducing the conversion efficiency of the power conversion device.

  By the way, when the density of the power supply facility increases, the amount of power supplied to the power system becomes excessive with respect to the amount of power consumed from the power system, and as a result, the voltage of the power system may increase. . For example, in the case of a single-phase three-wire 200 / 100V low-voltage distribution line, the electric power system voltage (voltage between the voltage line and the neutral line) is within a range of 101 ± 6V (95 to 107V) according to the Electric Utility Law. To be controlled.

  If there is a possibility that the voltage of the electric power system exceeds the upper limit of 107 V, it is conceivable to take measures in the electric power system, but this type of countermeasure only bears a large investment cost. Therefore, it is difficult to adopt at present. Therefore, at present, measures for reducing the power for reverse power flow to the power system are widely adopted by consumers.

  However, since this technology is a waste of a part of the electric power generated by the power supply facility, the cost effectiveness of the customer due to the introduction of the power supply facility is impaired. In addition, if the cost effectiveness of introducing power supply equipment is low, the willingness to introduce a new power supply device is impaired.

  On the other hand, in view of the widespread use of electric vehicles equipped with large-capacity storage batteries, the storage battery mounted on the electric vehicle is electrically connected to the electric power system, and charging and discharging of the storage battery are controlled, thereby controlling the voltage of the electric power system. A technique for maintaining the limit range has been proposed (see, for example, Patent Document 1). In Patent Document 1, when the voltage of the power system exceeds the first threshold, the storage battery mounted on the electric vehicle is charged, and when the voltage of the power system is lower than the second threshold, the battery is mounted on the electric vehicle. A technique for discharging from a storage battery is described.

JP2012-5131A

  However, the technique described in the cited document 1 merely performs charging and discharging of the electric vehicle in real time with respect to changes in the voltage of the power system. Therefore, this technique has a problem that it cannot be used to lower the voltage of the power system if the storage battery of the electric vehicle has reached full charge.

  An object of the present invention is to provide a control device that can reliably lower the voltage of the power system while using a storage battery mounted on an electric vehicle, and further, power management using the control device The purpose is to provide a system.

  A control device according to the present invention is provided in some or all of a plurality of consumers that receive power from an electric power system, and controls the charging and discharging of a running storage battery mounted on an electric vehicle. A period during which the voltage of the power system is predicted to exceed the upper limit value of the limit range is a countermeasure period, and charging of the storage battery is performed so that the voltage of the power system maintains the limit range in the countermeasure period. An adjustment unit that adjusts the remaining capacity of the storage battery before the countermeasure period so as to enable charging to maintain the voltage of the power system in the limit range in the countermeasure period; It is characterized by providing.

  In this control device, a part or all of the plurality of consumers that receive power from the power system is allowed to generate power with natural energy and to reversely flow the generated power to the power system. When a power generation facility is installed, it is preferable to include a prediction unit that determines the countermeasure period by predicting the power generated by the power generation facility and the power consumed by the consumer.

  In this control device, the power generation facility is preferably a solar power generation facility including a solar battery.

  Preferably, the control device includes a first notification unit that notifies the presentation device of the countermeasure period as a first period that refrains from using the electric vehicle before the countermeasure period.

  Preferably, the control device includes a second notification unit that notifies the presentation device of a period excluding the countermeasure period as a second period permitting the use of the electric vehicle before the countermeasure period.

  In this control device, when some or all of the plurality of consumers that receive power from the power system are provided with power storage equipment that is connected to the power system and performs charging and discharging. The adjustment unit is configured to maintain the voltage of the electric power system in the limit range in the countermeasure period when a time for using the electric vehicle is designated in the countermeasure period before the countermeasure period. It is preferable to adjust the remaining capacity of the power storage facility before the countermeasure period so that charging is possible.

  The power management system according to the present invention includes a power generation facility that generates power using natural energy and is allowed to reversely flow the generated power to the power system, and the control device.

  According to the configuration of the present invention, it is possible to prevent the voltage of the power system from rising beyond the limit range by charging the storage battery for traveling mounted on the electric vehicle. That is, it is possible to prevent the voltage of the power system from rising beyond the limit range without providing a dedicated power storage facility. In addition, the period during which the voltage of the power system exceeds the upper limit of the limit range is predicted as a countermeasure period, and the remaining capacity of the storage battery is adjusted before the countermeasure period, so the countermeasure period while using the storage battery mounted on the electric vehicle Has the effect of reliably reducing the voltage of the power system.

It is a block diagram which shows embodiment. It is a block diagram which shows the whole structure same as the above. It is a block diagram which shows the whole structure of the other structural example.

  As shown in FIGS. 1 and 2, the control device 50 described below is provided in some or all of the plurality of consumers 1 that receive power from the power system 30 and is mounted on the electric vehicle 40. The charging and discharging of the travel storage battery 41 is controlled. The control device 50 includes an instruction unit 521 and an adjustment unit 522. The instruction unit 521 sets a period during which the voltage of the power system 30 is predicted to exceed the upper limit value of the limit range as a countermeasure period, and instructs charging of the storage battery 41 so that the voltage of the power system maintains the limit range in the countermeasure period. To do. The adjustment unit 522 adjusts the remaining capacity of the storage battery 41 before the countermeasure period so that charging for maintaining the voltage of the power system 30 in the limit range is possible in the countermeasure period.

  A power generation facility in which a part or all of the plurality of consumers 1 receiving power from the power system 30 is allowed to generate power by natural energy and to reversely flow the generated power to the power system 30 It is desirable that is installed. In this case, it is desirable to include a prediction unit 523 that determines the countermeasure period by predicting the power generated by the power generation facility and the power consumed by the consumer 1. The power generation facility is preferably a solar power generation facility including the solar battery 21.

  The control device 50 preferably includes a first notification unit 524 that notifies the presentation device (operation display device 3) of the countermeasure period as a first period that refrains from using the electric vehicle 40 before the countermeasure period. In addition, the control device 50 includes a second notification unit 525 that notifies the presentation device (operation display device 3) as a second period during which the use of the electric vehicle 40 is permitted before the countermeasure period. It is desirable to provide.

  As shown in FIG. 3, a power storage facility (storage battery 61 and storage battery 61) connected to the power system 30 and charging and discharging is connected to a part or all of the plurality of consumers 1 receiving power from the power system 30. You may employ | adopt the structure by which the power converter device 62) is installed. When the time for using the electric vehicle 40 is designated in the countermeasure period before the countermeasure period, the adjustment unit 522 can be charged to maintain the voltage of the power system 30 in the limit range in the countermeasure period. Thus, it is desirable to adjust the remaining capacity of the power storage facility before the countermeasure period.

  Hereinafter, this embodiment will be described in detail. The power supply facility is a power generation facility, and particularly a solar power generation facility is assumed. As long as the power supply facility is configured to generate power using natural energy, the power supply facility may be configured to generate power using wind power, hydraulic power, geothermal heat, or the like. Moreover, the consumer 1 assumes a detached house.

  As shown in FIG. 2, the solar power generation facility includes a solar cell 21 and a power conversion device 22 that converts DC power output from the solar cell 21 into AC power. The solar power generation facility is connected to a power line 32 for internal wiring of the customer 1 (in many cases, connected to a distribution board), and grid connection with the power system 30 is possible. That is, the power received by the customer 1 from the power system 30 and the power generated by the solar power generation facility can be supplied to the electric load 31 provided in the customer 1, and the power generated by the solar power generation facility. The reverse power flow to the power system 30 is also possible.

  Furthermore, the power line 32 is connected to a power conversion device 42 that can exchange power with the electric vehicle 40 that travels using the electric energy of the storage battery 41. Here, the electric vehicle 40 is assumed to be an electric vehicle, an electric two-wheeled vehicle or the like that is equipped with a storage battery 41 that supplies electric power for traveling and that receives and receives DC power. When electric vehicle 40 is configured to exchange AC power with power line 32 as in a plug-in hybrid vehicle, power converter 42 can be omitted and only switching between charging and discharging is performed. You may do it. However, a configuration example including the power conversion device 42 will be described below.

  Similarly to the power conversion device 22, the power conversion device 42 can be connected to the power system 30. The power conversion device 42 has a function of bidirectionally converting power between direct current and alternating current, converts the alternating current power output from the power system 30 or the power conversion device 22 into direct current power, and charges the storage battery 41. Then, the DC power of the storage battery 41 is converted into AC power and supplied to the electric load 31. Note that the reverse flow of power from the power conversion device 42 connected to the electric vehicle 40 to the power system 30 may be prohibited or allowed, but is not particularly limited here.

  The operations of the power conversion device 22 and the power conversion device 42 are controlled by the control device 50. Here, the control device 50 is assumed to be a controller for HEMS (Home Energy Management System). This type of control device 50 can communicate with the electrical load 31 or electrical equipment used by the consumer 1 and monitors and controls the operating state of the electrical load 31 or electrical equipment. Here, the power converter 22 and the power converter 42 correspond to electrical equipment that is the object of monitoring and control by the control device 50.

  Here, a power generation facility (solar cell 21 and power conversion device 22) that is generated by natural energy and allowed to reversely flow the generated power to the power system 30, and the control device 50 will be described below. The main component of the power management system.

  The power conversion device 22 and the power conversion device 42 include a communication interface unit (hereinafter, the communication interface unit is referred to as a “communication I / F unit”) 421 in order to communicate with the control device 50. Furthermore, since the electric vehicle 40 can select a state in which power can be exchanged with the power conversion device 42 and a state in which the electric vehicle 40 can travel after being disconnected from the power conversion device 42, the power conversion device 42 A determination unit 422 for determining both states is provided. Furthermore, the power conversion device 42 includes an acquisition unit 423 that communicates with the electric vehicle 40 and acquires the storage amount (remaining capacity) of the storage battery 41 and the identification information of the electric vehicle 40.

  As shown in FIG. 1, the control device 50 includes a communication I / F unit 51 that communicates with the electrical load 31 or the electrical equipment. The communication I / F unit 51 is configured to perform wireless communication using radio waves as a transmission medium or power line carrier communication using a power line as a communication path. For example, ECOHNET Lite (registered trademark) is used as a communication protocol in communication between the control device 50 and the electric load 31 or the electric equipment.

  The communication I / F unit 51 acquires information grasped by the power converter 22 and the power converter 42 by communicating with the power converter 22 and the power converter 42. The communication I / F unit 51 acquires, for example, information related to the power generated by the solar cell 21 and the power output from the power conversion device 22 from the power conversion device 22. The power conversion device 22 also has a function of monitoring the voltage of the power system 30, and the communication I / F unit 51 also acquires information regarding this voltage. The communication I / F unit 51 also relates to, for example, information on whether or not power can be exchanged with the electric vehicle 40 from the power conversion device 42, and the remaining capacity of the storage battery 41 acquired from the electric vehicle 40 by the acquisition unit 423. Information, identification information of the electric vehicle 40, and the like are acquired.

  Information received by the communication I / F unit 51 is given to a processing unit 52 provided in the control device 50. In addition to the communication I / F unit 51, the processing unit 52 also uses information provided from the input unit 53 and the communication I / F unit 54 to set a plan for charging and discharging the storage battery 41. Moreover, the process part 52 is provided with the instruction | indication part 521, the adjustment part 522, the estimation part 523, the 1st notification part 524, and the 2nd notification part 525 so that it may mention later. The input unit 53 receives information on a usage schedule including a time zone in which the user desires to use the electric vehicle 40 and a destination (or travel distance). Information on the usage schedule is input from the operation display device 3 that communicates with the input unit 53. In addition, the communication I / F unit 54 acquires information related to the weather forecast through the telecommunication line 2 such as the Internet.

  The control device 50 includes an output unit 55 for outputting information generated by the instruction unit 521 in the processing unit 52 to the operation display device 3 as a presentation device. Here, the operation display device 3 preferably has a touch panel configuration in which a transparent touch switch as an operation device is stacked on the screen of the display device as a display device. However, a configuration including a display device and an operation device separately is adopted. May be. The operation display device 3 can use a dedicated device that performs wired or wireless communication between the input unit 53 and the output unit 55, but has a wireless communication function like a smartphone or a tablet terminal. It may be a general-purpose device. Furthermore, the display device may be a television receiver, and the operation device may be a remote control device attached to the television receiver. That is, the operation display device 3 may have a housing in which the display device and the operation device are different.

  The control device 50 includes a storage unit 56, and stores the results of the power generated by the solar cell 21 in association with the weather at the time of power generation (the amount of sunlight and the temperature). In addition, the storage unit 56 stores the actual power consumed by the electrical load 31 in association with the date and time. The power consumed by the electrical load 31 is acquired from a measuring device (not shown) that measures the power that the control device 50 passes through the power line 32. Since this measuring device should just obtain | require the total amount of the electric power consumed by the consumer 1, it is also possible to substitute with an electric power meter. Furthermore, the memory | storage part 56 also memorize | stores the information regarding the utilization schedule of the electric vehicle 40 which the user set.

  The prediction unit 523 in the processing unit 52 predicts the power generated by the solar cell 21 during the day of the day or during the day of the next day. For the prediction of the power generated by the solar cell 21, information related to the weather forecast acquired by the communication I / F unit 54, the actual power generated by the solar cell 21 stored in the storage unit 56, the amount of sunshine during power generation, and Temperature is used. The daytime means a time zone in which the solar cell 21 generates power by obtaining solar radiation.

  Further, the prediction unit 523 is based on the day of the day or the next day based on the actual power generation power of the solar cell 21 stored in the storage unit 56, the actual power voltage of the power system 30, and the predicted power generation of the solar cell 21. The power supply-demand relationship during the day. That is, the prediction unit 523 predicts whether or not the power supplied from the customer 1 to the power grid 30 exceeds the power supplied from the power grid 30 to the customer 1 during the day of the day or the next day. To do. In other words, the predicting unit 523 determines that the voltage of the power system 30 is equal to or higher than the upper limit of the limit range (for example, the line voltage between the voltage line and the neutral line is 95 to 107 V) during the day of the day or the day of the next day. Predict whether or not

  Here, if a period occurs when the prediction unit 523 predicts that the voltage of the power system 30 is equal to or higher than the upper limit value of the limit range, the power generated by the solar cell 21 may not be supplied to the power system 30 during this period. There is sex. However, during this period, power can be exchanged between the power converter 42 and the electric vehicle 40, and if the storage battery 41 is not fully charged, the power generated by the solar battery 21 is charged to the storage battery 41. It is possible to use it. If the storage battery 41 of the electric vehicle 40 is charged when the voltage of the electric power system 30 increases, the load increases as viewed from the electric power system 30, and as a result, the voltage of the electric power system 30 can be lowered. .

  As described above, when the voltage of the power system 30 is predicted to exceed the upper limit value of the limit range, the storage battery 41 of the electric vehicle 40 must be charged in order not to exceed the limit range. And in order to be able to charge the storage battery 41, a condition that power can be exchanged between the storage battery 41 of the electric vehicle 40 and the power converter 42, and a condition that the storage battery 41 is not fully charged. And must be satisfied. Hereinafter, the former condition is “condition 1”, and the latter condition is “condition 2”. In addition, a period corresponding to charging of the storage battery 41 of the electric vehicle 40 when the voltage of the power system 30 is equal to or higher than the upper limit value of the limit range is referred to as a “measure period”.

  Whether or not the condition 2 is satisfied depends on the usage state of the power of the storage battery 41, and thus differs for each customer 1. For example, when the electric vehicle 40 is traveling before the countermeasure period, or when the electric power of the storage battery 41 is used by the electric load 31 of the consumer 1 before the countermeasure period, the remaining capacity (storage power of the storage battery 41 is stored). Amount) has fallen and is ready for charging. On the other hand, before the countermeasure period, the storage battery 41 of the electric vehicle 40 may be fully charged, or the remaining capacity may be close to full charge.

  Therefore, the prediction unit 523 predicts the remaining capacity of the storage battery 41 during the countermeasure period based on information such as the usage schedule of the electric vehicle 40 and the actual power consumed by the electric load 31. When the predicted remaining capacity satisfies the condition 2, the first notification unit 524 configuring the processing unit 52 presents the countermeasure period to the operation display device 3 through the output unit 55, and further sets the countermeasure period to include the countermeasure period. A message is notified to refrain from using the electric vehicle 40 in the first period.

  In the first period, as will be described later, when the power of the storage battery 41 is consumed by the electric load 31 before the countermeasure period, the power is transferred from the storage battery 41 of the electric vehicle 40 to the power converter 42 before the countermeasure period starts. Includes a period for delivery.

  Whether or not the user of the electric vehicle 40 follows the message is not guaranteed, but if there are many consumers 1, the number of users who refrain from running the electric vehicle 40 according to the message increases, and as a result The voltage of the power system 30 can be reduced.

  When the storage battery 41 of the electric vehicle 40 is charged, the voltage of the power system 30 decreases. Therefore, the instruction unit 521 instructing charging of the storage battery 41 of the electric vehicle 40 has the voltage of the power system 30 within the limit range. The power conversion device 42 is controlled to adjust the charging current so as to be maintained. The control device 50 of each consumer 1 does not cause the voltage of the power system 30 to deviate from the limit range if the power generated by the solar cell 21 is equal to or less than a predetermined value set according to the consumer 1. to decide. At the time of determination, if the storage battery 41 of the electric vehicle 40 has not reached the power storage amount necessary for the planned travel distance, the instruction unit 521 continues to charge the storage battery 41 to obtain the power storage amount required for the planned travel distance. If it has reached, the instruction unit 521 stops charging the storage battery 41. As a matter of course, the instruction unit 521 stops the power supply from the power conversion device 42 to the storage battery 41 when the storage battery 41 is fully charged even during the countermeasure period.

  In addition, since the electric vehicle 40 cannot be used for the customer 1 that does not satisfy the condition 2 to reduce the voltage of the power system 30, the first notification unit 524 presents the countermeasure period to the operation display device 3. In addition, notification of messages may not be performed. The control device 50 includes a second notification unit 525 that notifies the operation display device 3 of a second period as a period during which use of the electric vehicle 40 is permitted. When the second notification unit 525 notifies the second period, the user can know the period in which the electric vehicle 40 can be used, so that a plan for using the electric vehicle 40 can be easily made.

  The configuration example described above assumes a case where a large number of customers 1 sharing the power system 30 have the electric vehicle 40, but when there are a small number of customers 1 that have the electric vehicle 40. Needs to increase the proportion of consumers 1 that satisfy condition 2.

  Therefore, when the countermeasure period occurs, the control device 50 of the customer 1 who owns the electric vehicle 40 notifies that the countermeasure period is generated using the operation display device 3 on the day before the countermeasure period. In addition, the control device 50 inquires of the user through the operation display device 3 whether or not they agree to charge the storage battery 41 of the electric vehicle 40 during the countermeasure period. When consent is obtained from the user through the operation display device 3 for the inquiry, the adjustment unit 522 of the control device 50 uses the power consumed by the electric load 31 at night before the countermeasure period for the storage battery 41 of the electric vehicle 40. The power converter 42 is controlled to be supplied from It should be noted that the period for using the power of the storage battery 41 can be not the night of the previous day but the morning of the day when the countermeasure period occurs.

  As described above, the remaining capacity of the storage battery 41 is reduced by the operation of the adjustment unit 522 until the countermeasure period, so that the condition 2 is satisfied in the countermeasure period and the storage battery 41 can be charged. That is, the adjustment unit 522 adjusts the remaining capacity of the storage battery 41 before the countermeasure period, so that the storage battery 41 can be charged during the countermeasure period, and the voltage of the power system 30 can be reliably reduced. become. In this case, in order to satisfy the condition 1, it is a matter of course that the user is prompted to refrain from driving the electric vehicle 40.

  In addition, even if it is urged to use the electric vehicle 40 before the countermeasure period, it is possible to reduce the remaining capacity of the storage battery 41, so the second notification unit 525 before the countermeasure period, A message prompting the use of the electric vehicle 40 may be notified to the operation display device 3.

  The control device 50 described above includes a computer including a processor that operates according to a program as a main hardware element. This type of computer includes a microcomputer that includes a memory integrally with a processor, and a configuration that includes a processor and a memory separately. A program for causing a computer to function as the control device 50 described above is provided by a ROM (Read Only Memory) mounted on the computer, provided through the telecommunication line 2, or a computer-readable recording medium. Provided by.

  The above-described configuration example assumes a case where the solar cells 21 are installed in all the consumers 1 and all the consumers 1 have the electric vehicles 40, but this condition is not necessarily required. That is, even if the customer 1 in which the solar cell 21 is installed and the customer 1 that owns the electric vehicle 40 are connected to a common power system (low voltage distribution line or high voltage distribution line) 30, The technique described in the present embodiment is applicable.

In the embodiment described below, as shown in FIG. 3, the customer 1 is different from the configuration shown in FIG.
The power storage facility is configured by a storage battery 61 and a power conversion device 62. In the illustrated example, the power converter 62 is described separately because it has a function different from that of the power converter 42, but the apparatus can be housed in one case. Moreover, you may employ | adopt the structure which integrated the storage battery 61 and the power converter device 62, and accommodated in the case.

  The basic function of the power conversion device 62 is the same as that of the power conversion device 42, and has a function of bidirectionally converting power between direct current and alternating current. That is, the power converter 62 converts alternating current power into direct current power, charges the storage battery 61, and converts the direct current power of the storage battery 61 into alternating current power. The power conversion device 62 is connected to a power line 32 (not shown), similarly to the power conversion device 22 and the power conversion device 42. In addition, the power conversion device 62 communicates with the control device 50 in the same manner as the power conversion device 22 and the power conversion device 42. The control device 50 acquires information related to the remaining capacity of the storage battery 61 from the power conversion device 62 and instructs the power conversion device 62 to control the charging and discharging of the storage battery 61. When the electric vehicle 40 is an electric vehicle, the capacity of the storage battery 61 may be smaller than that of the storage battery 41 of the electric vehicle 40. Therefore, the storage battery 61 can be provided at a lower cost than a general power storage facility.

  In the configuration example shown in FIG. 3, it is possible to suppress an increase in voltage of the power system 30 by charging the storage battery 61 during a period in which the voltage of the power system 30 is predicted to be equal to or higher than the upper limit value of the limit range. It is. Therefore, even if the customer 1 needs to use the electric vehicle 40 in part or all of the countermeasure period, the electric vehicle 40 is used while suppressing the voltage increase of the power system 30 by using the storage battery 61. It becomes possible.

  For example, it is assumed that 10:00 to 16:00 is a countermeasure period, and the user must use the electric vehicle 40 at 15:00:00 to 16:30 for pick-up of a child. In such a scene, since the electric vehicle 40 must be used for one hour in the countermeasure period, the electric vehicle 40 cannot be used to suppress the voltage increase of the power system 30. On the other hand, in the configuration shown in FIG. 3, during the countermeasure period, during the period when the storage battery 41 of the electric vehicle 40 cannot be charged, the storage battery 61 is charged to suppress the voltage increase of the power system 30. It becomes possible.

  In the configuration example shown in FIG. 3, the time during which the electric vehicle 40 can be used during the countermeasure period depends on the capacity and remaining capacity of the storage battery 61. Since the capacity | capacitance of the storage battery 61 cannot be changed, the control apparatus 50 adjusts remaining capacity (electric storage amount) according to the time which uses the electric vehicle 40. FIG. In order to determine the remaining capacity, the operation display device 3 notifies the control device 50 of the time zone in which the user is scheduled to use the electric vehicle 40 on the day before the day when the countermeasure period occurs. If the time zone in which the electric vehicle 40 is used is determined, the charge amount can be predicted. Therefore, the control device 50 adjusts the remaining capacity at night so as to satisfy the predicted charge amount. In adjusting the remaining capacity, the electric power of the storage battery 61 is consumed by the electric load 31 or the electric power of the storage battery 61 is charged to the storage battery 41 of the electric vehicle 40 before the countermeasure period is started.

  Here, although the storage battery 61 is provided for every consumer 1, the storage battery 61 and the power converter device 62 may be provided only in a part of the consumer 1 which makes the electric power system 30 common.

  In addition, when the processing apparatus (not shown) which integrates the control apparatus 50 installed in the consumer 1 in an area is provided, a processing apparatus acquires information from the control apparatus 50 provided for every consumer 1. The power supply-demand relationship may be predicted by aggregating information. In this case, if the control device 50 predicts the power consumed by the consumer 1 during the day when the solar cell 21 generates power based on the actual power consumption, the solar cell 21 generates power within the range managed by the processing device. The total power to be consumed and the total power consumed by the consumer 1 are known. That is, it is possible to predict whether or not the voltage of the power system 30 is equal to or higher than the upper limit value of the limit range.

1 consumer 2 telecommunications line 3 operation display device (presentation device)
21 Solar cell (power generation equipment)
22 Power converter (power generation equipment)
DESCRIPTION OF SYMBOLS 30 Electric power system 31 Electric load 32 Power line 40 Electric vehicle 41 Storage battery 42 Power converter 50 Control apparatus 61 Storage battery (electric storage equipment)
62 Power converter (power storage equipment)
521 Instruction unit 522 Adjustment unit 523 Prediction unit 524 First notification unit 525 Second notification unit

Claims (7)

A control device that is provided in some or all of a plurality of consumers that receive power from an electric power system and controls charging and discharging of a storage battery for traveling mounted on an electric vehicle,
A period in which the voltage of the power system is predicted to exceed the upper limit value of the limit range is taken as a countermeasure period, and in the countermeasure period, an instruction to instruct charging of the storage battery so that the voltage of the power system maintains the limit range And
An adjustment unit that adjusts the remaining capacity of the storage battery before the countermeasure period so as to enable charging for maintaining the voltage of the power system in the limit range in the countermeasure period. Control device. A power generation facility that generates power from natural energy and allows the generated power to flow backward to the power system to some or all of the plurality of consumers that receive power from the power system. If installed,
The control device according to claim 1, further comprising a prediction unit that determines the countermeasure period by predicting electric power generated by the power generation facility and electric power consumed by the consumer. The control device according to claim 2, wherein the power generation facility is a solar power generation facility including a solar battery. The control according to any one of claims 1 to 3, further comprising a first notification unit that notifies the presentation device of the countermeasure period as a first period that refrains from using the electric vehicle before the countermeasure period. apparatus. 5. The apparatus according to claim 1, further comprising: a second notification unit that notifies the presentation device of a period excluding the countermeasure period as a second period that permits the use of the electric vehicle before the countermeasure period. The control device described. When some or all of the plurality of consumers that receive power from the power system are connected to the power system, and a storage facility that performs charging and discharging is installed,
When the time for using the electric vehicle is designated in the countermeasure period before the countermeasure period, the adjustment unit is charged for maintaining the voltage of the power system in the limit range in the countermeasure period. The control device according to claim 1, wherein the remaining capacity of the power storage facility is adjusted before the countermeasure period. A power generation facility that generates power using natural energy and is allowed to reversely flow the generated power to the power system;
A power management system comprising: the control device according to claim 2.

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