JP5638360B2 - Power storage system - Google Patents

Description

  The present invention relates to a power storage system, and more particularly to a power storage system that manages charging and discharging of a storage battery provided in a house.

  In recent years, in consideration of global warming, environmental problems, and the like, a technique for charging a storage battery with electric power generated by a solar power generation device or a fuel cell with a small amount of CO2 emission and using it in a house has been proposed.

  For example, the technique described in Patent Document 1 includes a fuel cell, a load prediction device, and an operation amount calculation device. The device information and weather information from the device are input to the load prediction device, and the information and the calendar are input. By associating information with the load information generated in the past acquired from the fuel cell, the amount of load generated after the predicted time is predicted from the device information, weather information, and calendar information acquired at the predicted time. It has been proposed to predict the power load amount and the heat load amount without depending only on the time by obtaining the causal relationship with.

JP 2005-347096 A

  However, with the technique described in Patent Document 1, it is possible to predict the amount of power load, but there is room for improvement in terms of encouraging energy saving because it does not provide advice or the like for power saving. .

  The present invention has been made in consideration of the above-described facts, and an object thereof is to provide a power storage system that can propose energy saving to residents.

  In order to achieve the above object, the invention according to claim 1 is a storage battery for storing electric power used in a house, a discharge from the storage battery to an electric device provided in the house, and the storage battery by electric power of a system power supply. Control means for controlling charge / discharge of the storage battery including charging of the storage battery, measurement means for measuring the discharge amount of the storage battery, determination means for determining advice on energy saving based on the measurement result of the measurement means, Informing means for informing the advice determined by the determining means.

  According to the first aspect of the present invention, the electric power used in the house is stored in the storage battery, and the control means controls the discharge from the storage battery to the electrical equipment provided in the house and the storage battery by the power of the system power supply. Charging / discharging of the storage battery including charging is controlled.

  The measuring unit measures the charge / discharge amount of the storage battery, the determining unit determines advice on energy saving based on the measurement result of the measuring unit, and the notifying unit notifies the advice determined by the determining unit. The For example, the amount of discharge for every two days measured by the measuring means is compared, and a reduction in power consumption during a time period in which the amount of discharge increases is determined as advice and displayed on a display device or the like. Therefore, a proposal for energy saving can be made to the resident.

  For example, the determining unit includes a predicting unit that predicts the energy consumption behavior of the resident based on the measurement result of the measuring unit, as in the invention described in claim 2. You may make it determine the advice regarding energy. For example, it is possible to predict energy consumption behavior by registering a behavior pattern for each hour in advance. In this case, as in the invention described in claim 5, the predicting means can compare the measurement results of the measuring means at different times on different dates, and can predict the energy consumption behavior based on the comparison results. It is.

  Further, as in the invention described in claim 3, the determining means has storage means for storing a plurality of predetermined advices relating to energy, and is set in advance from the plurality of advices stored in the storage means. The advice may be determined by selecting an advice corresponding to the energy saving item. In this case, as the energy saving item, any one of the items of air conditioning, cooking, lighting, hot water supply, ventilation, and home appliances can be applied as in the invention described in claim 4.

Further, as in the invention described in claim 6, the notifying means displays display means for displaying advice on energy saving based on the measurement result of the measuring means, and transmitting means for transmitting the advice to a predetermined external terminal. , May be included. In this case, as in the invention according to claim 7, detecting means for detecting an abnormality relating charging and discharging of the storage battery, when an abnormality is detected by the detecting means, the abnormality to the different external terminal end and said outer end end Notification means for notifying abnormality information indicating the occurrence of the error may be further provided.

In addition, as in the invention described in claim 8, the battery can be discharged from the storage battery to a device other than an electric device, and further includes a measuring means for measuring the amount of electric power supplied to the device other than the electric device. The means may determine the advice on energy saving based on the measurement result of the measuring means and the measurement result of the measuring means, or the advice on energy saving by the notifying means as in the invention of claim 9. After the notification, the measuring unit measures the discharge amount of the storage battery, and further includes a determination unit that determines whether or not a predetermined target value has been achieved, and the notification unit further notifies the determination result of the determination unit. It may be.

  As described above, according to the present invention, since the advice on energy saving is determined and notified based on the measurement result of the discharge amount of the storage battery, an energy storage system capable of making energy saving proposals to residents is provided. There is an effect that it can be provided.

It is a block diagram which shows schematic structure of the electrical storage system concerning embodiment of this invention. It is a figure which shows an example of the database memorize | stored in the control apparatus in the electrical storage system concerning embodiment of this invention. (A) shows an example of the charge / discharge amount of the storage battery of yesterday, and (B) shows an example of the charge / discharge amount of the storage battery of today. It is a flowchart which shows an example of the flow of the process performed with the electrical storage system concerning embodiment of this invention. (A) shows an example of a past discharge amount and an action pattern, and (B) shows an example of today's discharge amount. It is a flowchart which shows an example of the flow of a process at the time of displaying progress by the energy-saving advice and automatic control. (A) shows an example of a past discharge amount and an action pattern, and (B) shows an example of today's discharge amount (including solar power generation). It is a block diagram which shows schematic structure of the electrical storage system of a modification. It is a figure which shows an example of the database memorize | stored in the control apparatus in the electrical storage system of a modification. It is a flowchart which shows an example of the flow of the process performed with the electrical storage system of a modification. It is a flowchart which shows an example of the flow of an abnormality detection process. It is a figure for demonstrating the automatic control to target electric power.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a power storage system according to an embodiment of the present invention.

  As shown in FIG. 1, a power storage system 10 according to an embodiment of the present invention includes a storage battery 12 in a house, and stores the battery in an electric device or household appliance (hereinafter referred to as a housing equipment / home appliance 14) used in the house. 12 can be supplied with electric power charged.

  The housing equipment / home appliance 14 is connected to a distribution board 16, and power is supplied to the house via the distribution board 16. The distribution board 16 is connected to the storage battery 12 via the measurement system 18 and is connected to the system power supply. The distribution board 16 receives power from the system power supply or the storage battery 12 and is connected to the distribution board 16. Electric power is supplied to the equipment / home appliance 14.

  The measurement system 18 includes power supplied from the distribution board 16 to the housing equipment / home appliance 14, charging power supplied to the storage battery 12 through the distribution board 16, and living from the storage battery 12 through the distribution board 16. Electric power such as discharge power supplied to the equipment / home appliance 14 is measured.

  Moreover, the measurement system 18 measures electric power for every branch breaker, when measuring the electric power supplied from the distribution board 16 to the housing equipment / home appliance 14. For example, in the present embodiment, a CT (Current Transformer) sensor (not shown) is provided for each branch breaker to measure electric power. Thereby, the power consumption of the electric equipment connected to the branch breaker can be measured for each branch breaker. Here, the amount of power consumption is measured, but the SOC amount of the storage battery 12 may be measured.

  The measurement system 18 is connected to a control device 20 that controls charging / discharging of the storage battery 12, and outputs a measurement result measured by the measurement system 18 to the control device 20.

  In addition, the control device 20 is connected to the home appliance 14 and the operation display device 22, and performs calculations for analyzing the power consumption of the house and giving advice on energy saving. Based on the calculation result, the operation display device 22 is controlled to display energy-saving advice, and the housing equipment / home appliance 14 is controlled to reduce power consumption.

  The control device 20 stores various types of information in order to give advice on energy saving. Specifically, as shown in FIG. 2, various databases such as a branch breaker DB 24, a power consumption history DB 26, and an energy saving advice DB 28 are stored.

  The power consumption history DB 26 stores measurement results of the measurement system 18 together with time information in units of branch breakers. That is, it is possible to compare the power consumption stored in the power consumption history DB 26 with the current product power, and by comparing the past power consumption with the current power consumption, the power consumption for each time zone can be calculated. It is possible to analyze.

  Further, the branch breaker DB 24 preliminarily stores and stores residential equipment / home appliances 14 connected to each branch breaker of the distribution board 16. This makes it possible to estimate the resident's energy consumption behavior from the measurement result of the power consumption for each branch breaker. That is, the power consumption for each branch breaker (for example, the power supplied from the storage battery 12) is measured by the measurement system 18, the power consumption status for each electrical device for each time period is stored, and the power consumption history DB 26 is stored. By comparing with the power consumption of the same time zone of the past (for example, the previous day or the previous week) stored, the trend of power consumption can be analyzed, and the energy consumption behavior of the resident can be predicted and advice on energy saving Can be performed.

  The energy saving advice DB 28 stores a plurality of predetermined messages for providing energy saving advice, and selects a corresponding message based on the result of power consumption analysis by the control device 20, and selects the selected message. This message is displayed on the operation display 22 to provide advice on energy saving.

  As an advice method, for example, as shown in FIG. 3, the control device 20 compares the measurement results of the discharge amount of the storage battery 12 measured by the measurement system 18 yesterday and today. In the case of FIG. 3, the amount of change in the amount of charge (SOC) of the storage battery 12 is different in 4 hours from 18:00 to 22:00 indicated by the bold line, and the amount of discharge of today is more inclined than the amount of charge / discharge of yesterday. It is large and consumes a lot of power. Moreover, the electrical equipment connected to the branch breaker can be identified from the branch breaker DB 24, and the power consumption of the branch breaker connected to the lighting of the living room and the TV and the power consumption of the branch breaker connected to the lighting of the child room Are larger than the past power consumption in the same time zone, the control device 20 says, “Today, the power consumption from 18:00 to 22:00 is larger than yesterday (or the same day last week). “Isn't you spending time in the living room with the children's room turned on?” From the energy-saving advice DB 28 and advice on energy-saving by displaying on the operation display 22 Do. As a result, it is possible to improve the resident's awareness of energy conservation and lead to energy conservation.

  When selecting an advice from a plurality of advices, the operation indicator 22 is used for energy usage of the house (for example, “air conditioning”, “cooking”, “lighting”, “hot water supply”, “ventilation”, “home appliances”). It may be possible to set a target value for energy saving in advance and provide advice for the set energy usage. For example, when the energy saving target value is 500 Wh / day and “cooling / heating” is preset on the operation display 22 as the energy use of the priority item, the energy saving advice is about 30 when the “outside temperature” decreases (or increases). If you stop for minutes, you will reach your goal. “A message such as“ ”may be selected and displayed to give advice on energy saving, or the temperature setting of the air conditioner may be changed or stopped by automatic control.

  In addition, when the control device 20 makes an advice regarding energy saving, the operation indicator 22 can register a normal action pattern for each time in advance, so that an action added from the difference between today and the past discharge amount, etc. It is also possible to guess. For example, as a normal behavior pattern, “sleeping” time is from 0:00 to 6:00, “prepare to go out + meal” time is from 7:00 to 8:00, “outing” time is from 8:00 to 17:00, and 18:00 to 19 is “TV” time, “TV + meal” time from 19:00 to 20:00, “TV + bath” time from 21 to 22:00, “TV” time from 22:00 to 24:00, etc. By registering the normal behavior pattern in advance by operating the display device 22, the amount of discharge of the storage battery 12 in each time period is compared with the past, thereby controlling the change in the behavior pattern and the increase / decrease in the power consumption for each behavior. The device 20 can detect it. As a result, for example, it is possible to promote advice regarding energy saving for each energy consumption action such as shortening the cooking time.

  Further, the control device 20 may predict the behavior pattern from the measurement result of the power consumption, or may learn the behavior pattern and correct the normal behavior pattern registered in advance. For example, if the power consumption of the branch breaker connected to the daily IH cooking heater is high from 7:30 to 8:00 and the consumption is zero at 8: 00 to 8:30, Cooking can be determined as 7:30 to 8:00. In addition, when the time of breakfast registered as a normal behavior pattern is from 8:00:00 to 8:30, when a predetermined condition is satisfied (for example, the number of times that breakfast is determined from 7:30 to 8:00) The behavior pattern may be corrected when the number of times is greater than or equal to a predetermined number of times.

  In addition, since the control apparatus 20 can calculate the charge / discharge amount of each time from the measured power consumption, the power amount generally used in each behavior pattern is stored in advance, and the calculated value and actual Energy saving advice may be given when the values are different. That is, since there is power amount information generally used in each behavior pattern, it is possible to calculate how much waste is consumed in which behavior pattern, and energy saving advice is possible. For example, the amount of power generally used for a group (August) is 250 W for a “home appliance” TV (1 unit) and 500 W for a “air-conditioning” air conditioner (1 unit). If the actual measured value is 1500 Wh, it is generally half that of 750 Wh, so “twice as much power as usual was used. However, to save energy, it is better to gather in one room! "

  Next, an example of specific processing performed in the power storage system 10 according to the embodiment of the present invention configured as described above will be described. FIG. 4 is a flowchart showing an example of the flow of processing performed in the power storage system 10 according to the embodiment of the present invention.

  In step 100, discharging of the storage battery 12 is started and the process proceeds to step 102. For example, the storage battery 12 is charged using the power from the system power supply (midnight power) at midnight when the charge is low, and the charging is terminated at a predetermined time and the residential equipment is connected via the distribution board 16.・ Starts discharging the home appliance 14. During charging of the storage battery 12, power from the system power supply is supplied to the housing equipment / home appliance 14 via the distribution board 16.

  In step 102, the amount of discharge from the storage battery 12 to each residential equipment / home appliance 14 is measured, and the routine proceeds to step 104. That is, the amount of power supplied from the storage battery 12 to each branch breaker of the distribution board 16 is measured by the measurement system 18.

  In step 104, the measurement result of the measurement system 18 is output to the control device 20, and the process proceeds to step 106. When the measurement result of the measurement system 18 is output to the control device 20, the control device 20 stores the measurement result in the power consumption history DB 26.

  In step 106, the past discharge amount (for example, the discharge amount of the same time of yesterday, the discharge amount of the same time of the same day last week, etc.) is read by the control device 20, and the process proceeds to step 108. That is, the power consumption in the past (same time zone on the same day of the week as yesterday or last week) corresponding to the current time is read from the power consumption history DB 26.

  In step 108, the difference between the read past discharge amount and the discharge amount of the current measurement result is analyzed by the control device 20, and the process proceeds to step 110. In step 110, a change in the resident behavior pattern is detected by the control device 20. Is analyzed. For example, it is assumed that the hourly action pattern registered in advance via the operation display 22 and the past power consumption stored in the power consumption history DB 26 are as shown in FIG. Assume that the measurement result of the quantity is as shown in FIG. In this case, it can be detected by the analysis of the control device 20 that the power consumption is increased by the hatching in FIG. 5B in the “outing” time zone. In addition, the control device 20 can specify the electrical device connected to the branch breaker corresponding to the increment based on the branch breaker DB 24.

  Subsequently, in step 112, it is determined by the control device 20 whether or not automatic control is set. In this determination, a setting as to whether or not automatic control (for example, control such as automatically shutting off the power supply of an electrical device) can be set in advance by the operation display device 22, and the setting is set to automatic control. If the determination is negative, the control device 20 proceeds to step 114. If the determination is negative, the control device 20 proceeds to step 118.

  In step 114, the energy saving advice selection calculation is performed by the control device 20, and the process proceeds to step 116. In step 116, the energy saving advice is displayed on the operation display 22 and the process proceeds to step 124. For example, as shown in FIGS. 5A and 5B, the control device 20 determines that the power consumption of the branch breaker corresponding to the entrance lighting in the “outing” time zone is as shown in FIGS. If you detect an increase in power consumption compared to past power consumption, a message such as "Today, power consumption during outing hours has increased. Did you forget to turn off the entrance lights?" Or when it is detected that the power consumption in the “TV + bath” time zone has increased compared to the power consumption of the same time in the past in FIG. In the lighting that seems to be a room that does not use power consumption during the time period of "TV", or select a message such as "Let's shorten the bath interval between family members!" The power consumption of the corresponding branch breaker is the same time period in the past in FIG. If you detect an increase compared to the power consumption, “Today, the power consumption of the TV is increasing. Did you forget to turn off the lights in the room that you are not using?” Or a message such as

  More specifically, the message selection method is, for example, a message such as “Today's power consumption is increasing during the XX hours. Did you forget to turn off XX?” Electric equipment stored in the DB 28 in advance and read out, reads out an action pattern registered in advance as an action pattern in the “XX” time zone in which power consumption is increasing, and is connected to an increasing branch breaker Is read from the branch breaker DB 24 as “XX”, and the generated message is displayed on the operation display 22. In addition, when the correspondence between the behavior pattern and the electric device connected to the branch breaker where the electric power is increased, the electric device connected to the branch breaker may be read as “XX”. .

  On the other hand, in step 118, the energy saving control content is selected and calculated by the control device 20, and the process proceeds to step 120. In step 120, the target device is controlled by the control device 20, and the process proceeds to step 122. That is, based on the analysis result of the control device 20, the control content of the electric device that can be controlled by the control device 20 is determined, and the target device is automatically controlled. For example, from the analysis result, the control device detects that the power consumption at the current time has increased from the same time zone in the past, the air conditioner is operating, and the air conditioner that can be controlled by the control device 20 is operating. In such a case, the control device 20 automatically controls the air conditioner by selecting a set temperature so that the power consumption of the air conditioner is reduced. As a result, power consumption can be automatically reduced.

  Subsequently, in step 122, the control content is displayed on the display 22 and the process proceeds to step 124. That is, the control content of the electric device controlled by the control device 20 is displayed on the operation display 22.

  In step 124, the control device 20 determines whether or not to end the above series of processing. The determination is made by determining whether or not a predetermined charging time of the storage battery 12 has been reached, determining whether or not the storage battery 12 needs to be charged, or being terminated by the operation indicator 22 (for example, system stop). If the determination is negative, the process returns to step 102 and the above-described processing is repeated. When the determination is affirmed, the series of processing ends.

  Next, processing for displaying the result of energy saving advice or automatic control performed by the above-described processing will be described. FIG. 6 is a flowchart showing an example of the flow of processing when displaying energy saving advice and progress by automatic control.

  In step 150, the control device 20 determines whether or not to display energy saving advice and the progress of the automatic control result of the electric device by the control device 20. In this determination, the control device 20 determines whether or not an instruction to display the progress has been given by the operation display device 22, and if the determination is affirmed, the process proceeds to step 150, and if the determination is negative, the process is performed. To complete other processing.

  In step 152, the discharge amount of the previous day and the previous day is read from the power consumption history DB 26, and the process proceeds to step 154.

  In step 154, the discharge amount of the previous day and the previous day stored in the power consumption history DB 26 is compared, and the process proceeds to step 156.

  In step 156, the comparison result is displayed on the operation display device 22, and the series of processing ends. For example, the difference between the previous day and the previous day's discharge amount for each time is calculated, and the comparison result is displayed by displaying the difference portion with respect to the previous day plus or minus. Accordingly, it can be determined whether or not there was an energy saving effect by energy saving advice or automatic control two days before.

  In the above embodiment, the solar power generation device is not considered. However, the solar power generation device may be further provided to consider the power generated by the solar power generation device. For example, when yesterday's discharge amount is as shown in FIG. 7 (A) and today's discharge amount is as shown in FIG. 7 (B), the discharge amount is smaller than the previous day. In addition, the total power consumption is higher than yesterday when the power generation amount (hatched part in FIG. 7B) is combined, so the control device 20 should give energy-saving advice in consideration of this point. Also good.

  Then, the modification of the electrical storage system concerning embodiment of this invention is demonstrated. FIG. 8 is a block diagram illustrating a schematic configuration of a power storage system according to a modification. The same components as those in the above embodiment will be described with the same reference numerals.

  As shown in FIG. 8, the power storage system of the modified example includes a storage battery 12 in a house, and the electric power charged in the storage battery 12 to an electric device or home appliance (hereinafter referred to as a residential equipment / home appliance 14) used in the house. Can be supplied.

  The housing equipment / home appliance 14 is connected to a distribution board 16, and power is supplied to the house via the distribution board 16. The distribution board 16 is connected to the storage battery 12, the system power supply, and the solar power generation device 32 via the measurement system 18, and receives power supply from the system power supply, the storage battery 12, or the solar power generation device 32, Electric power is supplied to the housing equipment / home appliance 14 connected to the electrical panel 16.

  Further, a PHV / EV charging device 30 for charging a storage battery for a vehicle such as a plug-in hybrid vehicle (PHV) or an electric vehicle (EV) is further connected to the distribution board 16 of the modification, and charging of the storage battery for the vehicle is performed. Is possible.

  The measurement system 18 includes power supplied from the distribution board 16 to the housing equipment / home appliance 14, charging power supplied to the storage battery 12 through the distribution board 16, and living from the storage battery 12 through the distribution board 16. Various electric powers such as discharge power supplied to the installation equipment / home appliance 14 and generated power supplied from the solar power generation device 32 to the distribution board 16 are measured.

  In the modification, the residential equipment / home appliance 14 is connected via the CT sensor 40, and the power consumption of each electrical device can be detected by the CT sensor 40. In other words, in the above-described embodiment, the power consumption of the housing equipment / home appliance 14 is detected for each branch breaker. However, in this embodiment, if the CT sensor 40 is provided for each electrical equipment, each electrical equipment is provided. Each power consumption can be detected.

  The CT sensor 40 has a function of communicating with the control device 20, and the detection result of the CT sensor 40 can be transmitted to the control device 20. For example, the CT sensor 40 may be provided with a wireless communication function such as Bluetooth, and the detection result of the CT sensor 40 may be transmitted to the control device 20 or may be transmitted by wire.

  In addition, the control device 20 is connected to the home appliance 14 and the operation display device 22, and performs calculations for analyzing the power consumption of the house and giving advice on energy saving. Based on the calculation result, the operation display device 22 is controlled to display energy-saving advice, and the housing equipment / home appliance 14 is controlled to reduce power consumption.

  Further, the control device 20 is connected to a network 34 such as the Internet, and can communicate with a predetermined center server 35, and communicates with an external terminal device (terminal device A 36 or terminal device B 38) via the center server 35. It is possible to send information. For example, it is possible to send energy-saving advice to the terminal device A 36 via the center server 35 or to notify the terminal device B 38 of an abnormality when a system abnormality is detected. Further, various operation instructions may be made to the control device 20 from the terminal device A36 or the terminal device B38.

  The control device 20 of the modified example stores various databases in order to give advice on energy saving, as in the above embodiment. Specifically, as shown in FIG. 9, databases such as a CT sensor DB 42, a power consumption history DB 26, and an energy saving advice DB 28 are stored. Basically, a database similar to that in the above embodiment is stored, but a database (CT sensor) for specifying an electrical device connected to the CT sensor 40 instead of the branch breaker DB 24 in the above embodiment. The only difference is that DB42) is stored. The CT sensor DB 42 corresponds to the electrical equipment connected to the CT sensor 40, and is similar to the branch breaker DB 24.

  Similarly to the above-described embodiment, the control device 20 according to the modified example is capable of registering a normal action pattern for each time in advance by the operation display 22 when giving advice on energy saving. As a result, it is also possible to infer an added action or the like from the difference between today and the past discharge amount. For example, as a normal behavior pattern, “sleeping” time is from 0:00 to 6:00, “prepare to go out + meal” time is from 7:00 to 8:00, “outing” time is from 8:00 to 17:00, and 18:00 to 19 is “TV” time, “TV + meal” time from 19:00 to 20:00, “TV + bath” time from 21 to 22:00, “TV” time from 22:00 to 24:00, etc. By registering the normal action pattern in advance by operating the display device 22, the control device 20 can detect the increase or decrease in power consumption for each action by comparing the discharge amount of the storage battery of each time with the past. As a result, for example, it is possible to encourage advice on energy saving for each action such as shortening the cooking time.

  Furthermore, in the modified example, it is possible to set the target power consumption when performing the automatic control in step 120 described in the above embodiment. For example, it is possible to set the target power consumption by operating the operation display 22 and to control the housing equipment / home appliance 14 so that the target power consumption is set.

  Next, an example of specific processing performed in the power storage system of the modified example configured as described above will be described. FIG. 10 is a flowchart illustrating an example of a flow of processing performed in the power storage system according to the modification. Note that the same processes as those in the above embodiment will be described with the same reference numerals.

  In step 100, discharging of the storage battery 12 is started, and the routine proceeds to step 103. For example, the storage battery 12 is charged using the power from the system power supply (midnight power) at midnight when the charge is low, and the charging is terminated at a predetermined time and the residential equipment is connected via the distribution board 16.・ Starts discharging the home appliance 14. During charging of the storage battery 12, power from the system power supply is supplied to the housing equipment / home appliance 14 via the distribution board 16.

  In step 103, the amount of discharge from the storage battery 12 to each home appliance / home appliance 14 is measured, and the routine proceeds to step 105. That is, the amount of power supplied from the storage battery 12 to the distribution board 16 is measured by the measurement system 18, and the power consumption of each residential equipment / home appliance 14 is measured by the CT sensor 40.

  In step 105, the measurement result is output to the control device 20 and the process proceeds to step 106. When the measurement result is output to the control device 20, the control device 20 stores the measurement result in the power consumption history DB 26.

  In step 106, the past discharge amount (for example, the discharge amount of the same time of yesterday, the discharge amount of the same time of the same day last week, etc.) is read by the control device 20, and the process proceeds to step 108. That is, the power consumption in the past (same time zone on the same day of the week as yesterday or last week) corresponding to the current time is read from the power consumption history DB 26.

  In step 108, the difference between the read past discharge amount and the discharge amount of the current measurement result is analyzed by the control device 20, and the process proceeds to step 110. In step 110, a change in the resident behavior pattern is detected by the control device 20. Is analyzed. For example, it is assumed that the hourly action pattern registered in advance via the operation display 22 and the past power consumption stored in the power consumption history DB 26 are as shown in FIG. Assume that the measurement result of the quantity is as shown in FIG. In this case, it can be detected by the analysis of the control device 20 that the power consumption is increased by the hatching in FIG. 5B in the “outing” time zone. In addition, the control device 20 can specify the electrical device connected to the CT sensor 40 corresponding to the increase based on the CT sensor DB 42.

  Next, in step 111, the abnormality detection process is performed by the control device 20, and the process proceeds to step 112. In the abnormality detection process, the charge / discharge amount of the storage battery 12 is measured by the measurement system 18, and the measured charge / discharge amount of the storage battery 12 is zero, or the charge / discharge amount is normal and a predetermined value (eg, ± 10%) or more. When the difference is expected, it is determined that charging / discharging of the storage battery 12 is abnormal. Specifically, processing is performed according to the flowchart of FIG. FIG. 11 is a flowchart illustrating an example of the flow of abnormality detection processing.

  That is, in step 200, it is determined by the control device 20 whether or not the abnormality detection cancellation setting has been performed in advance. Since it is not necessary to perform an abnormality detection process when it is known in advance that the determination is a condition for determining an abnormality, the abnormality detection cancellation can be set by the operation display 22 and the abnormality detection cancellation is displayed on the operation display. The control device 20 determines whether the machine 22 is operated and set in advance. If the determination is affirmative, the abnormality detection process is returned to return to the process of FIG. 10, and if the determination is negative, the process proceeds to step 202.

  In step 202, the charge / discharge amount of the storage battery 12 is measured by the measurement system 18, and the process proceeds to step 204.

  In step 204, the control device 20 determines whether or not there is a charging / discharging abnormality of the storage battery 12. The determination is made, for example, by determining whether the charge / discharge amount of the storage battery 12 is zero or by determining whether there is a difference of more than a predetermined value (for example, ± 10% or more) from the normal state. If the determination is negative, the abnormality detection process is returned to return to the process of FIG. 10, and if the determination is affirmative, the routine proceeds to step 206.

  In step 206, charging / discharging of the storage battery 12 is stopped by the control device 20, the system is restarted, and the process proceeds to step 208. That is, when an abnormality occurs, the charging and discharging of the storage battery 12 is stopped once and then restarted to recover.

  In step 208, the charge / discharge amount of the storage battery 12 is remeasured by the measurement system 18, and the process proceeds to step 210.

  In step 210, it is determined by the control device 20 whether or not it has returned. The determination again determines whether charging / discharging is abnormal as in step 204. If the determination is affirmative, the process proceeds to step 212. If the determination is negative, the process proceeds to step 214.

  In step 212, the fact that an abnormality has occurred and returned is displayed on the operation display 22 and notified to the terminal device B38. Specifically, a message (for example, a message such as “An error has occurred but has returned to normal by restarting”) indicating that an abnormality has occurred and has been restored by restarting is displayed on the operation display 22. At the same time, the message is notified via the center server 35 to a terminal device B 38 different from the terminal device A 36 that performs normal energy saving advice. This allows the resident to know that an abnormality has occurred and returned.

  On the other hand, in step 214, charging / discharging of the storage battery 12 is stopped by the control device 20, and the process proceeds to step 216.

  In step 216, the occurrence of an abnormality is displayed on the operation display 22 and notified to the terminal device B38, the abnormality detection process is returned, and the process proceeds to step 112 in FIG. Specifically, a message indicating that an abnormality has occurred (for example, a message such as “An abnormality has occurred and charging / discharging of the storage battery has been stopped”) is displayed on the operation display 22, and a normal energy saving advice is provided. This message is notified via the center server 35 to a terminal device B38 different from the terminal device A36 that performs the above. Accordingly, the resident can know that an abnormality has occurred and charging / discharging has been stopped.

  In the abnormality detection process, the terminal device A36 that performs normal energy saving advice is notified and the terminal device B38 is notified in the case of an abnormality. However, the present invention is not limited thereto. Only the terminal device (for example, a mobile phone) owned by the wife may be notified, and if an abnormality occurs, the terminal device (for example, the mobile phone) owned by the wife and the master may be notified.

  Next, when the abnormality detection process is terminated and the process proceeds to step 112 in FIG. 10, in step 112, it is determined by the control device 20 whether or not automatic control is set. In this determination, a setting as to whether or not automatic control (for example, control such as automatically shutting off the power supply of an electrical device) can be set in advance by the operation display device 22, and the setting is set to automatic control. If the determination is negative, the process proceeds to step 114. If the determination is negative, the process proceeds to step 119.

  In step 114, the energy saving advice selection calculation is performed by the control device 20, and the process proceeds to step 116. In step 116, the energy saving advice is displayed on the operation display 22 and the process proceeds to step 117. For example, as described in the above embodiment, as shown in FIGS. 5 (A) and 5 (B), the control device 20 performs the CT corresponding to the illumination of the entrance in the “outing” time zone as a result of the analysis. When it is detected that the power consumption of the sensor 40 has increased compared to the past power consumption shown in FIG. 5A, “Today, power consumption during outing hours has increased. "Did you forget to turn off?" Or that the power consumption in the "TV + bath" time zone has increased compared to the power consumption of the same time in the past in FIG. If it is detected, it is presumed that the interval between family members in the bath was long, and a message such as “Let's shorten the interval between baths between family members!” Or the consumption of “TV” time zone. Turn off the CT sensor 40 corresponding to the lighting that seems to be a room where power is not used. If we detect that the power has increased compared to the power consumption of the same time zone in the past in Fig. 5 (A), “Today, the power consumption of the TV time zone is increasing. “Did you forget to turn off the lights in the room you did n’t do?”.

  More specifically, the message selection method is, for example, a message such as “Today's power consumption is increasing during the XX hours. Did you forget to turn off XX?” Electricity connected to the increasing CT sensor 40 is read out in advance as a behavior pattern registered in advance as a behavior pattern of the time zone of “XX” in which power consumption is increased and stored in the DB 28. By reading out the device from the CT sensor DB 42 as “XX”, the message generated by generating the message is displayed on the operation display 22. In addition, when the correspondence between the behavior pattern and the electric device connected to the CT sensor 40 whose power is increasing cannot be taken, the electric device connected to the CT sensor 40 is read as “XX”. Also good.

  In step 117, energy-saving advice is transmitted to the terminal device A 36, and the process proceeds to step 124. For example, the message displayed on the operation display 22 in step 116 is transmitted to the terminal device A 36 owned by the resident via the center server 35. As a result, the resident can recognize the waste of power consumption and the like, and it is possible to improve awareness of energy saving.

  On the other hand, in step 119, the control content for the preset target power is determined by the control device 20 and the process proceeds to step 120. In step 120, the target device is controlled by the control device 20 and the process proceeds to step 122. For example, by operating the operation display 22, the target is set in advance so that the resident can set energy-saving target power (for example, target power consumption for each hour or target power consumption for each action pattern). The contents to control the residential equipment / home appliance 14 are determined so as to be electric power. As an example, as shown in FIG. 12, each discharge amount is disassembled for each element (in FIG. 12, household appliance standby power 300 Wh, air conditioner 750 Wh, TV 750 Wh, hot water supply 500 Wh), The controller 20 controls the temperature adjustment of the air conditioner to set a value (for example, 5% energy saving for “home appliance standby power”, 10% energy saving for “air conditioner”, etc.) Controls such as shutting off the energization of the home appliances that are the standby power. As a result, it is possible to automatically control the power consumption so as to be a preset target power. In addition, you may make it perform automatic control by making it possible to set beforehand the electric equipment (for example, household appliances, such as a refrigerator) which cannot interrupt | block electric power with the operation indicator 22. FIG.

  Subsequently, in step 122, the control content is displayed on the display 22 and the process proceeds to step 124. That is, the control content of the electric device controlled by the control device 20 is displayed on the operation display 22. The control content may be notified to the terminal device A 36 or the terminal device B 38 via the center server 35.

  In step 124, the control device 20 determines whether or not to end the above series of processing. The determination is made by determining whether or not a predetermined charging time of the storage battery 12 has been reached, determining whether or not the storage battery 12 needs to be charged, or being terminated by the operation indicator 22 (for example, system stop). If the determination is negative, the process returns to step 103 and the above-described processing is repeated. When the determination is affirmed, the series of processing ends.

  As described above, also in the power storage system of the modified example, basically the same processing as the processing of FIG. 4 described in the above embodiment is performed, and advice on energy saving and automatic control are possible. Further, in the modified example, since the CT sensor 40 can be provided for each electric device, it is possible to perform more detailed analysis than the above-described embodiment and provide advice regarding accurate energy saving.

  In the modification, the PHV / EV charging device 30 is connected, and the PHV / EV charging device 30 is one of the power loads of the house, so (power load other than the PHV / EV charging device 30) = ( Discharge amount from the storage battery 12) + (power consumption of the PHV / EV charging device 30). Therefore, the power supply amount from the distribution board 16 to the PHV / EV charging device 30 is measured by the CT sensor 40 or the like, Since it is necessary to compare the power of the residential power load other than the PHV / EV charging device 30, when the advice on energy saving is given, the power load other than the PHV / EV charging device 30 is obtained from the above formula. -You may make it perform the advice regarding energy saving in consideration of the electric energy to the EV charging apparatus 30. FIG.

  Furthermore, in the modified example, a power generation device such as a solar power generation device 32 is also provided. Since the solar power generation device 32 is one of the electric power on the charging side, the measurement system 18 generates power from the solar power generation device 32. It is also necessary to measure the amount and compare the power as (housing power load) = (discharge amount from the storage battery 12) + {(power generation amount of the solar power generation device 32) − (power purchase amount)}. You may make it give the advice regarding energy saving in consideration of the electric power generation amount of the solar power generation device 32 by calculating | requiring electric power addition with said formula.

  Further, in the above embodiment, the energy saving advice is displayed on the operation display 22 in the process of step 116 in FIG. 4 described above. However, in the modified example, the terminal device A 36 and the terminal device are connected via the center server 35. Since communication to B38 is possible, advice (for example, e-mail transmission) on energy saving is notified to the terminal device A36 such as a mobile phone owned by the resident as in step 117. It is possible to give advice to.

  Further, the processing for displaying the result of energy-saving advice or automatic control performed in the power storage system in the modified example is performed in accordance with the flowchart of FIG. The detailed explanation is omitted. In the modified example, the target value of power consumption can be set when performing automatic control. Therefore, when displaying the result of energy-saving advice or automatic control (for example, comparing in step 156 in FIG. 6). When displaying the result), the control device 20 may further determine whether or not the measured value is equal to or less than a preset target value, and display on the operation display 22 whether or not the target has been achieved. . In the modification, the terminal devices A. 36 and the terminal device B38 can be notified of information, the instruction to execute the processing of FIG. 6 is given from the terminal device A36 or the terminal device B38 to the control device 20 via the center server 35, and the result is sent to the control device. 20 may be received.

  In the embodiment and the modification described above, advice on energy saving is given by display on the operation display 22 or notification to the terminal device, but it is provided in the house or in the operation display 22. The advice may be given by voice using a speaker or a speaker provided in the terminal device.

DESCRIPTION OF SYMBOLS 10 Power storage system 12 Storage battery 14 Household equipment and household appliances 16 Distribution board 18 Measurement system 20 Control device 22 Operation indicator 24 Branch breaker DB
26 Power consumption history DB
28 Energy saving advice DB
30 PHV / EV charging device 34 Network 35 Center server 36 Terminal device A
38 Terminal B
40 CT sensor 42 CT sensor DB

Claims (9)

A storage battery for storing electricity used in a house;
Control means for controlling charging / discharging of the storage battery including discharging from the storage battery to an electric device provided in a house, and charging of the storage battery with power of a system power supply,
Measuring means for measuring the amount of discharge of the storage battery;
Determining means for determining advice on energy saving based on the measurement result of the measuring means;
An informing means for informing the advice determined by the determining means;
Power storage system with   The said determination means has a prediction means which predicts a resident's energy consumption action based on the measurement result of the said measurement means, The said advice is determined based on the prediction result of the said prediction means. Power storage system.     The determination means has storage means for storing a plurality of predetermined advices related to energy saving, and by selecting advice related to predetermined energy saving items from the plurality of advices stored in the storage means. The power storage system according to claim 1 or 2, wherein the advice is determined.   The power storage system according to claim 3, wherein the energy saving item is any one of air conditioning, cooking, lighting, hot water supply, ventilation, and home appliances.   The power storage system according to claim 2, wherein the prediction unit compares the measurement results of the measurement unit at different times on different dates and predicts the energy consumption behavior based on the comparison result.   The said alerting | reporting means contains the display means which displays the said advice determined by the said determination means, and the transmission means which transmits the said advice to a predetermined | prescribed external terminal. Power storage system. Detecting means for detecting an abnormality relating to charging and discharging of the storage battery;
When said abnormality is detected by said detecting means, and notifying means for notifying the abnormality information indicating that the abnormality has occurred to the different external terminal end and said outer end late,
The power storage system according to claim 6, further comprising: The storage battery is capable of discharging to a device other than the electrical device, and further includes a measurement unit that measures the amount of power supplied to the device other than the electrical device, and the determination unit includes a measurement result of the measurement unit and The power storage system according to any one of claims 1 to 7, wherein advice on energy saving is determined based on a measurement result of the measurement means.   After the advice notification regarding energy saving by the notification means, the measurement means further measures a discharge amount of the storage battery and determines whether or not a predetermined target value has been achieved, and the notification means comprises: The electrical storage system of any one of Claims 1-8 which further alert | reports the determination result of the said determination means.

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