JP5784352B2 - Residential energy system - Google Patents

Description

  The present invention relates to a residential energy system, and more particularly to a residential energy system that includes a solar power generation device and efficiently uses generated power.

  Since the amount of power generated by a solar power generation device depends on the weather, a technology for adjusting the amount of power by predicting the amount of power generation based on weather forecasts, seasons, temperature information, past information, etc. has been proposed. Yes.

  For example, in the technique described in Patent Document 1, the power generation amount on the scheduled power generation date is predicted based on the weather information on the planned power generation date based on the weather forecast or the current season and predetermined power generation amount information. Predicting the power consumption of the load on the scheduled power generation date based on the season or the date or day of the scheduled power generation date and the predetermined power consumption information, so that the total amount of power supplied to the power network is constant, It has been proposed to adjust the amount of electric power by obtaining the amount of electric power supplied to each natural energy power generation system.

JP 2004-72900 A

  However, the technique described in Patent Document 1 has room for improvement because the specific and effective utilization of surplus power is insufficient.

  The present invention has been made in view of the above facts, and an object thereof is to use generated power without waste.

In order to achieve the above object, the invention described in claim 1 includes a solar power generation device that generates power by sunlight, an acquisition unit that acquires at least one of weather information, season information, and temperature information from a center server, Based on the information acquired by the acquisition unit, a power generation amount prediction unit that predicts a power generation amount by the solar power generation device, and predicts a power consumption amount consumed in a house based on the information acquired by the acquisition unit. Power consumption prediction means, the power generation amount prediction means, and the prediction results of the consumption amount prediction means, and based on the comparison results, the power consumption amount predicted by the consumption amount prediction means It determines whether to oPERATION by the power generated not included the photovoltaic device electrical equipment operable at any time, predicted binding of the power generation amount prediction means There is greater than the prediction result of the consumption prediction means, it is characterized by and a control means for controlling to operate the electric device by the generator power of the photovoltaic device.

  According to the invention described in claim 1, in the solar power generation device, power is generated by sunlight.

  The acquisition means acquires at least one piece of weather information, season information, and temperature information from the center server.

  In the power generation amount prediction means, the power generation amount by the solar power generation device is predicted based on the information acquired by the acquisition means. For example, by measuring the power generation amount for each information in advance, the power generation amount of the solar power generation device can be predicted from the acquired information. When predicting the power generation amount, it is possible to predict the power generation amount more accurately by acquiring weather information as information and predicting the power generation amount from the power generation amount for each weather.

  The consumption amount predicting unit predicts the power consumption amount used in the house based on the information acquired by the acquiring unit. For example, by predetermining the power consumption of an air conditioner or the like for each information, the power consumption can be predicted from the information. When predicting power consumption, it is possible to predict more accurate power consumption by acquiring seasonal information and temperature information as information and predicting power consumption from seasonal information and temperature information. Become.

Then, in the control means, the prediction results of the power generation amount prediction means and the consumption amount prediction means are compared, and based on the comparison result, whether or not to operate an electric device that can be operated at any time according to the power generation amount of the solar power generation device. If the prediction result of the power generation amount prediction means is larger than the prediction result of the consumption amount prediction means , the electric device is controlled to operate . Thereby , generated electric power can be used without waste.

As in the second aspect of the present invention, the power generation amount predicted for the predetermined period by the power generation amount prediction means is compared with the measured value for the predetermined period, and the power generation amount prediction means for the predetermined period and thereafter is predicted. was provided with the power generation amount further power generation amount correction means for correcting the, based on the correction result of the control unit power generation amount correction means, determines whether to operate the gas equipment electricity by the power generated by the photovoltaic power generator Then, the electric device may be controlled, and, as in the invention according to claim 3, the power consumption amount for the predetermined period predicted by the consumption amount prediction means is compared with the actual measurement value for the predetermined period. and, further comprising a consumption amount correcting means for correcting the prediction result of the consumption prediction means after a predetermined period, the control means based on the correction result of the consumption amount correcting means, electrodeposition by the power generated by the photovoltaic power generator Determine whether to drive the equipment It is also possible to control the electrical equipment. That is, the prediction value may be corrected based on the actual measurement value to improve the prediction accuracy.

In the case of having a plurality of electrical devices, the control means, when the prediction result of the power generation amount prediction means is larger than the prediction result of the consumption amount prediction means, as in the invention described in claim 4, An electric device that can be operated may be selected from the electric devices, and the selected electric device may be controlled to start operating.

  Further, as in the invention described in claim 5, an awning and a window provided in the house when the control unit includes the rain information as the weather information acquired by the acquiring unit, and the control unit acquires the rain information by the acquiring unit. At least one of the opening / closing devices may be further controlled. As a result, it becomes possible to prevent the laundry from getting wet due to rain or to prevent rain from entering the house.

  Further, as in the invention described in claim 6, the battery further includes a storage battery that stores electric power used in a house, and the control means is configured to store the storage battery when surplus generated power is generated even when a predetermined electric device is operated. You may make it control further so that it may charge. As a result, the power charged in the storage battery can be used at night and the generated power can be used more efficiently and efficiently.

  As described above, according to the present invention, it is possible to use generated power without waste by determining whether or not to operate a predetermined electrical device based on the predicted power generation amount and power consumption and controlling the electrical device. There is an effect that can be.

It is a block diagram which shows schematic structure of the house energy system concerning embodiment of this invention. It is a block diagram which shows schematic structure of HEMS of the house energy system concerning embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed by HEMS of the house energy system concerning embodiment of this invention. It is a flowchart which shows the modification of the process performed by HEMS of the residential energy system concerning embodiment of this invention. It is a figure for demonstrating the example which improves weather information precision by communication with a center server and HEMS of each point.

  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 residential energy system according to an embodiment of the present invention. In FIG. 1, the solid line indicates a power line, and the dotted line indicates an information line.

  A residential energy system 10 according to an embodiment of the present invention includes a solar power generation device 12 and can use electric power generated by sunlight in a home.

  A power control system (PCS) 14 is connected to the solar power generation device 12, and DC power generated by the solar power generation device 12 is converted into AC power by the PCS 14 and supplied to the distribution board 16 in the house. It has become so.

  The distribution board 16 is connected to the system power 18 and the storage battery 20 as other power sources, and can supply the system power 18 and the power stored in the storage battery 20 to the house. That is, the distribution board 16 supplies any of the power generated by the solar power generator 12, the system power 18, and the power stored in the storage battery 20 to the house.

  The distribution board 16 is connected to an electrical device 22 provided in the house, an awning 24, a window opening / closing device 26, and the like, and power is supplied to each. As the electrical device 22, for example, a device that can be operated at any time, such as a washing machine or a dishwasher, is connected. Further, the awning 24 is a awning that can be stored and is operated by a motor or the like, and the window opening and closing device 26 can be opened and closed by a motor or the like by applying an opening and closing device such as a top light. .

  Further, a HEMS (Home Energy Management System) 30 for managing and controlling energy in the house is connected to the distribution board 16. The HEMS 30 controls the distribution board 16 so that any one of the generated power of the photovoltaic power generation device 12, the power of the storage battery 20, and the system power 18 is supplied to the house, or is provided in the house. It controls the operation and stop of the electrical equipment 22 and the like.

  The HEMS 30 is connected to the storage battery 20, the electrical device 22, the awning 24, the load sensor 28, and the window opening / closing device 26, and is connected to a predetermined center server 34 that manages various types of information via the gateway 32. Various information is exchanged.

  In the present embodiment, the center server 34 transmits information such as weather information and season information to the HEMS 30 via the gateway 32, and the HEMS 30 uses the power (sunlight) based on the information. Energy saving is realized by controlling the switching of the generated power of the power generation device 12, the power of the storage battery 20, or the system power 18), and controlling the electrical equipment 22, the awning 24, the window opening and closing device 26, etc. in the house.

  The electric device 22 can be a device that can be operated at any time, such as a washing machine or a dishwasher, and can be operated by an instruction from the HEMS 30.

  The load sensor 28 detects the load on the clothesline, and when the HEMS 30 determines the presence or absence of laundry based on the detection result of the load sensor 28 and obtains rainfall information, the awning 24 and the window opening / closing The opening and closing of the device 26 is controlled.

  In addition, the storage battery 20 has a function of detecting the storage amount, and the detection result of the storage amount is input to the HEMS 30. In the HEMS 30, charging / discharging of the storage battery 20 is controlled based on the storage amount of the storage battery 20.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 of the residential energy system 10 according to the embodiment of the present invention.

  As shown in FIG. 2, the HEMS 30 includes a CPU 32, a ROM 34, a RAM 36, and an input / output port 38. These include a bus 40 such as an address bus, a data bus, and a control bus. Connected through.

  A display unit 42, an operation unit 44, and a memory 46 are connected to the input / output port 38 as various input / output devices. In addition, the display part 42 and the operation part 44 are comprised integrally, and the operation part 44 can apply the touch panel provided in the display part 42. FIG.

  The memory 46 stores a program for controlling the electric power of the house and the electric device 22 and various information, and the CPU 32 executes the program stored in the memory 46 by expanding the program in the RAM 36 or the like. Thus, the power supply control of the house and the electric device 22 are controlled.

  Furthermore, the input / output port 38 is connected to a storage amount detection device 48, an electrical device 22, an awning 24, a load sensor 28, a window opening / closing device 26, and a window opening / closing detection sensor 50.

  The storage amount detection device 48 is provided in the storage battery 20, detects the storage amount of the storage battery 20, and outputs the detection result to the HEMS 30. Thereby, HEMS30 controls charging / discharging of the storage battery 20 based on the detection result of the electrical storage amount detection apparatus 48. FIG.

  As described above, the electric device 22 is an electric device that can be operated at any time, such as a washing machine or a dishwasher, and its operation can be controlled by an instruction from the HEMS 30.

  The awning 24 can be moved to a use position and a storage position by a motor or the like, and the position of the awning is controlled by an instruction from the HEMS 30.

  In order to detect the presence or absence of the laundry, the load sensor 28 detects a load such as a laundry basket and outputs the detection result to the HEMS 30, so that the HEMS 30 detects, for example, a predetermined value or more from the detection result of the load sensor 28. When the load is detected, it is determined that there is laundry, and when the rain information or the like is acquired from the center server 34 or the like, control is performed to move the awning 24 to the use position (sunshade position).

  Further, the window opening / closing detection sensor 50 detects opening / closing of a window such as a top light, and outputs the detection result to the HEMS 30, so that the HEMS 30 determines that the window is open from the detection result of the window opening / closing detection sensor 50. In this case, when the rainfall information is acquired from the center server 34 or the like, the window opening / closing device 26 is controlled to perform control such as closing the window.

  Then, the process performed by HEMS30 of the residential energy system 10 concerning embodiment of this invention is demonstrated.

  Since the solar power generation device 12 changes the amount of power generation per day depending on the weather, season, etc., and requires efficient use of generated power, the HEMS 30 receives weather conditions, seasonal information, and seasonal solar power from the center server 34. Photovoltaic power generation information and the like are acquired, and the total power generation amount of the solar power generation device 12 of the day is predicted. For example, weather information (for example, 9-12 o'clock: sunny, 12-15 o'clock: cloudy, 15-18 o'clock: weather information for each hour such as sunny) and power generation amount for each weather (for example, sunny: 3 kWh, cloudy) : 2 kWh, rain: 0.5 kWh) from the center server 34 to calculate the total power generation amount of the solar power generation device 12. Note that the power generation amount may be predicted from the season information, or the power generation amount may be predicted using the season information and the weather information, respectively.

  Next, the HEMS 30 predicts the power consumption used on the house side. For example, by acquiring at least one of temperature information and season information from the center server 34, trial calculation of air-conditioning energy as power consumption is possible. For example, the air conditioning energy from the temperature information may be calculated by using a general value (when the outside air temperature is greater than or equal to ○ degree, cooling is turned on, kWh). The history may be stored, and the relationship between the temperature and the air conditioning energy may be calculated from the stored information, or the air conditioning energy may be calculated from the past power consumption for each season. In the following description, it is assumed that the power consumption is predicted based on temperature information and season information.

  Thus, in HEMS30, since the power generation amount of the solar power generation device 12 and the power consumption amount on the house side can be calculated, the electric power supply 22 that can be used at any time is operated by comparing the predicted power generation amount and the power consumption amount. Whether or not to do so can be determined and controlled. That is, when the power generation amount is larger than the power consumption amount, it is possible to effectively use the generated power without waste by controlling the electric device 22 that can be operated at any time. In addition, when there is a single electric device 22, it is determined and controlled whether or not it can be operated, and when there are a plurality of electric devices 22, the electric device 22 that can be operated may be selected and controlled.

  In addition, when the power generation amount> the power consumption amount, the HEMS 030 can store the required amount of power in the storage battery 20, and by storing the surplus generated power in the storage battery 20, the generated power can be effectively used without waste. It becomes possible. That is, when the power generation amount is clearly larger than the power consumption amount, the nighttime consumption can be sufficiently covered by storing the electricity in the storage battery 20. When the power generation amount is less than the power consumption amount, the HEMS 30 supplies the electric power that can be operated at any time to the amount that the power generation amount per hour exceeds the power storage capacity or suppresses the power consumption at night. Control the electrical equipment 22 (for example, control that suppresses power consumption by changing the set temperature of the air conditioner, or control that suppresses power consumption by changing the timer time if a timer is set) Etc.) or an alarm may be issued to limit power consumption.

  The HEMS 30 acquires weather information from the center server 34, predicts rainfall from the acquired weather information, and controls the awning 24, the window opening / closing device 26, and the like. For example, weather information is acquired from the center server 34, and it is determined whether the probability of precipitation after ○ is high or low. When the window opening / closing detection sensor 50 detects the opening / closing of the window and the window is opened, the window opening / closing device 26 is controlled to close the window according to rainfall information, or the load sensor 28 is used to indicate whether there is laundry. If there is laundry, the awning is controlled to operate. As a result, it is possible to prevent the laundry from getting wet during the rain or to prevent rain from entering the house.

  At this time, the HEMS 30 of a plurality of houses connected to the center server 34 is provided with a rain sensor, a solar radiation sensor, etc., and the center server 34 receives weather information (detection results of the rain sensor and solar radiation sensor) from the HEMS 30 of each house. Thus, the center server 34 corrects the weather information from the position of each house and the detection result of the sensor from each house and transmits it to each house, thereby obtaining more accurate weather information. It becomes possible to transmit to HEMS30 of a house. For example, when the rain information is received from a house where the center server 34 is located, the rain start time and its location are registered, and a plurality of pieces of information are aggregated to create a rain map for the area on the center server 34. It is possible to predict the rain time in a certain house based on the rain map and send it to the HEMS 30 of the house as the weather information, so that the HEMS 30 becomes the rain time based on the weather information from the center server 34. The window opening / closing device 26 and the awning 24 are controlled.

  Next, a specific flow of processing performed in the HEMS 30 of the residential energy system 10 according to the embodiment of the present invention configured as described above will be described. FIG. 3 is a flowchart showing an example of a flow of processing performed in the HEMS 30 of the residential energy system 10 according to the embodiment of the present invention.

  In step 100, weather information is acquired from the center server 34, and the process proceeds to step 102.

  In step 102, seasonal information is acquired from the center server 34, and the process proceeds to step 104.

  In step 104, seasonal solar power generation amount information is acquired from the center server 34, and the process proceeds to step 106.

  In step 106, the power generation amount is predicted based on the weather information and the solar power generation amount information, and the process proceeds to step 108. That is, as described above, 9-12 o'clock: sunny, 12-15 o'clock: cloudy, 15-18 o'clock: sunny, hourly weather information and power generation amount for each weather (for example, sunny: 3 kWh, cloudy : 2 kWh, rain: 0.5 kWh), the total power generation amount of the solar power generation device 12 is predicted. In addition, in this Embodiment, although solar power generation amount information (power generation amount information for every weather) is demonstrated as what is acquired from the center server 34, you may make it memorize | store beforehand in HEMS30.

  In step 108, temperature information is acquired from the center server 34, and the process proceeds to step 110.

  In step 110, the power consumption is predicted based on the season information and the temperature information, and the process proceeds to step 112. That is, as described above, the air conditioning energy may be calculated using a general value (when the outside air temperature is greater than or equal to ○ degree, cooling is turned on and ○ kWh). A history of power consumption may be stored, and a relationship between the temperature and air conditioning energy (or power consumption in a house) may be obtained from the stored information and calculated.

  In step 112, power consumption during solar power generation is predicted, and the routine proceeds to step 114. That is, of the power consumption predicted in step 110, the power consumption during solar power generation is predicted.

  In step 114, it is determined whether or not power generation amount> power consumption during power generation. If the determination is negative, the process proceeds to step 116, and if the determination is affirmative, the process proceeds to step 118.

  In step 116, power supply is performed so that all the generated power is consumed, and the series of processing ends. When the generated power is insufficient, control is performed so that power is supplied from the storage battery 20 to the house, and the storage battery 20 is controlled to be charged with midnight power at a low charge.

  On the other hand, in step 118, it is determined whether there is an electric device 22 that can be operated at any time. The determination is made, for example, by determining whether or not the presence of the electric device 22 that can be operated at any time, such as a washing machine or a dishwasher, is set in advance, and when the determination is affirmed, the process proceeds to step 120. If not, the process proceeds to step 124.

  In step 120, it is determined whether or not power generation is started. The process waits until the determination is affirmed, and the process proceeds to step 122. That is, it waits until it is time to start power generation.

  In step 122, control is performed to start operation of the electric device 22 that can be operated anytime, and the routine proceeds to step 124. At this time, when there is a single electric device 22 that can be operated, it is determined whether or not the electric device 22 can be operated, and the operation is controlled. The electric device 22 that can be operated is selected and controlled to start operation. In other words, when it is predicted that the amount of power generation is clearly larger than the amount of power consumption, by starting operation of the electric device 22 that can be operated at any time, waste of generated power can be prevented and used efficiently. .

  In step 124, the amount of power consumption other than during solar power generation is calculated, and the routine proceeds to step 126. That is, the power consumption amount other than during solar power generation is calculated by subtracting the power consumption amount during solar power generation determined in step 112 from the power consumption amount determined in step 110.

  In step 126, the amount of electricity stored in the storage battery 20 is calculated, and the routine proceeds to step 128. That is, the storage amount is calculated from the detection result of the storage amount detection device 48.

  In step 128, power storage and power sale are controlled based on each calculation result, and a series of processing ends. That is, control is performed such that the storage battery 20 is charged and the remaining power is sold.

  Next, the modification of the process performed by HEMS30 of the residential energy system 10 concerning embodiment of this invention is demonstrated.

  In said embodiment, the electric power generation amount of the solar power generation device 12 and the electric energy consumption used by the house side are each estimated, a prediction result is compared and whether the operation | movement of the electric equipment 22 is started. In the modified example, a case will be described in which a function of correcting based on actual measurement values is provided in order to improve the prediction accuracy of the power generation amount and the power consumption amount.

  In other words, the distribution board 16 of the modified example has a function of measuring the actual value of the generated power supplied from the PCS 14 and the actual value of the electric power supplied to the electrical equipment 22 provided in the house, respectively. A function of transmitting the actual measurement value to the HEMS 30 is provided. In the HEMS 30, the predicted value is corrected based on the actual measurement value. In the following, a case where the prediction results of both the power generation amount and the consumption amount are corrected based on the actual measurement value will be described, but either one of the prediction results may be corrected based on the actual measurement value.

  FIG. 4 is a flowchart showing a modification of the processing performed in the HEMS 30 of the residential energy system 10 according to the embodiment of the present invention. Note that the processing in FIG. 4 is started after steps 100 to 112 in FIG. 3 are performed, and steps 100 to 112 are omitted.

  When the power consumption during solar power generation is predicted in step 112, in step 200, it is determined whether or not the predicted value of yesterday is different from the actually measured value. If the determination is affirmative, the process proceeds to step 202. If the result is negative, the process goes to step 206.

  In step 202, the difference (ratio) between the predicted value of yesterday and the actually measured value is added to the predicted value of today, and the process proceeds to step 204. That is, the predicted value is corrected based on the actual measurement value yesterday.

  In step 204, it is determined whether or not power generation amount> power consumption during power generation. If the determination is negative, the process proceeds to step 206. If the determination is affirmative, the process proceeds to step 208.

  In step 206, power supply is performed so that all the generated power is consumed, and the series of processing ends. When the generated power is insufficient, control is performed so that power is supplied from the storage battery 20 to the house, and the storage battery 20 is controlled to be charged with midnight power at a low charge.

  On the other hand, in step 208, it is determined whether there is an electrical device 22 that can be operated at any time. The determination is made, for example, by determining whether or not the presence of the electric device 22 that can be operated at any time, such as a washing machine or a dishwasher, is set in advance, and when the determination is affirmed, the process proceeds to step 210. If the result is negative, the routine proceeds to step 222.

  In step 210, it is determined whether or not it is just before the start of power generation. The process waits until the determination is affirmed, and the process proceeds to step 212. That is, it waits until it is time to start power generation.

  In step 212, actual values of the power generation amount and the power consumption amount are measured, and the process proceeds to step 214. That is, the measured values of the power generation amount and power consumption during a predetermined period are measured.

  In step 214, it is determined whether or not the predicted value is different from the actually measured value. If the determination is affirmative, the process proceeds to step 216. If the determination is negative, the process proceeds to step 220.

  In step 216, the predicted value is replaced with the actually measured value, the difference (ratio) from the actually measured value is added to the predicted value for the subsequent time, and the operable device is recalculated, and the process proceeds to step 218. That is, the predicted value of power consumption is corrected based on the actually measured value, and the electric device 22 that can be operated again is selected.

  In step 218, it is determined whether or not the power generation amount <the power consumption amount as a result of the correction of the predicted value based on the actual measurement value. If the determination is affirmative, the process proceeds to step 206. Goes to step 220.

  In step 220, control is performed to start operation of the electric device 22 that can be operated at any time by the generated power, and the process proceeds to step 222. At this time, when there is a single electric device 22 that can be operated, it is determined whether or not the electric device 22 can be operated, and the operation is controlled. The electric device 22 that can be operated is selected and controlled to start operation. That is, when the amount of power generation is clearly larger than the amount of power consumption, the operation of the electric device 22 that can be operated at any time can be started to prevent the generated power from being wasted and used efficiently.

  In step 222, the amount of power consumption other than during solar power generation is calculated, and the routine proceeds to step 224.

  In step 224, the amount of power stored in the storage battery 20 is calculated, and the process proceeds to step 226. That is, the storage amount is calculated from the detection result of the storage amount detection device 48.

  In step 226, power storage and power sale are controlled based on each calculation result, and a series of processing ends. That is, control is performed such that the storage battery 20 is charged and the remaining power is sold.

  Next, other processes performed in the HEMS 30 will be described.

  In the present embodiment, the HEMS 30 acquires weather information from the center server 34 and predicts the generated power and power consumption of the solar power generation device 12, but in addition to this, when rain information is received as weather information, The awning 24 and the window opening / closing device 26 are controlled. Specifically, the rain information including the time when it rains is received from the center server 34, and the window is closed when the window opening / closing detection sensor 50 detects the opening of the window at the time when it rains. Thus, the window opening and closing device 26 is controlled so that the HEMS 30 determines whether there is laundry from the detection result of the load sensor 28. If there is laundry, the awning 24 is controlled so as not to get wet. To do.

  Further, the center server 34 aggregates information on weather from the HEMS 30 provided in a plurality of houses to improve the accuracy of the weather information, in order to improve the accuracy of the weather information and the rain information including the time when it rains. Can do.

  Specifically, a rain sensor, a solar sensor, or the like is provided in a plurality of houses, and the detection results of the rain sensor, the solar sensor, etc. are transmitted to the center server 34 via the HEMS provided in each house. Since the situation can be grasped by the center server 34, the weather information acquired by the center server 34 from an information organization such as the Japan Meteorological Agency can be corrected and transmitted to the HEMS 30.

  For example, as shown in FIG. 5, by communicating with the center server 34 and the HEMS 30 provided in the house at each point (A to F points), the rainfall information at each point is acquired, and the rain starts from the A point. If it begins to rain and it starts raining at the points C and D, it is possible to create an isoline (solid line in FIG. 5) having the same time at which it starts to rain based on information from each point. Then, by predicting the transition of the isoline as shown by the dotted line in FIG. 5, it is possible to predict the rain start time at the points E and F, so the time predicted by the center server 34 is calculated. By transmitting the weather information including the information to the HEMS 30 at the E point and the F point, accurate weather information can be transmitted. As a result, it is possible to improve the prediction accuracy of generated power and power consumption in the HEMS 30 at each point (E point and F point), and it is possible to accurately control the awning 24 and the window opening and closing device 26. .

  In the above embodiment, the example in which the HEMS 30 controls the awning 24 and the window opening / closing device 26 based on the weather information has been described. However, the device to be controlled is not limited to this, and other electrical devices May be applied. Further, when the awning 24 and the window opening / closing device 26 are controlled, they may be controlled step by step. For example, when the weather information from sunny to cloudy is acquired, the awning 24 and the window opening and closing device 26 are operated to a predetermined first stage, and when the weather information from cloudy to rain is acquired, the first stage is You may make it control to operate | move to a different 2nd step.

  Moreover, in said embodiment, the electric power generation amount of the solar power generation device 12 is estimated based on weather information, and the electric power consumption consumed in a house is estimated based on seasonal information and temperature information (temperature information). However, the present invention is not limited to this, and the power generation amount and the power consumption amount may be predicted based on at least one environment information of weather information, season information, and temperature information. For example, when predicting power consumption from weather information, use of specific electrical equipment such as washing and drying machines will increase if it is raining, or if it is clear, another specification such as an air purifier (pollen) If there is a system that can identify the electrical equipment due to the increased use of electrical equipment, the power consumption can be expected to some extent. Further, when the power consumption is predicted from the seasonal information, it is possible to predict from the past information by the prediction (average value) of the consumption during a predetermined period. For example, in the case of an air cleaner, it always works in the spring (pollen countermeasures), or in the case of an electric water heater, the amount of power is low in summer, but in winter it requires a lot of power, and if it is a refrigerator, Although the amount of power is large, the amount of power is small in winter, so it is possible to predict a certain amount of power consumption by taking these into consideration. Further, when the power consumption is predicted from the temperature information, the peak temperature of the day is the maximum temperature around 12:00 to 2 o'clock in the daytime. It is also possible to predict the daily peak of solar radiation by looking at the points, and in addition, the amount of power consumption is assumed to be high on the day when the temperature rise rate of the day is high. May be predicted. When the temperature becomes more than (or less), if the device is frequently used, for example, if it is a device such as an air conditioner, the amount of consumption increases, the amount of power consumption can be predicted.

DESCRIPTION OF SYMBOLS 10 Residential energy system 12 Solar power generation device 20 Storage battery 22 Electric equipment 24 Awning 26 Window opening and closing device 30 HEMS
32 Gateway 34 Center server

Claims (6)

A solar power generation device that generates power by sunlight;
Acquisition means for acquiring at least one of weather information, season information and temperature information from the center server;
Based on the information acquired by the acquisition unit, a power generation amount prediction unit that predicts a power generation amount by the solar power generation device;
Based on the information acquired by the acquisition means, consumption prediction means for predicting the power consumption consumed in a house;
Comparing the respective prediction results of the power generation amount prediction means and the consumption amount prediction means, based on the comparison result, the power consumption amount is not included in the power consumption amount predicted by the consumption amount prediction means at any time operation the electrical equipment can be by the generated power of the solar power generation device determines whether to OPERATION, when the prediction result of the power generation amount prediction means is greater than the prediction result of the consumption prediction means, the sun Control means for controlling the electric device to operate by the generated power of the photovoltaic power generation device;
Residential energy system with A power generation amount correcting unit that compares the power generation amount predicted by the power generation amount prediction unit with an actual measurement value of the predetermined period and corrects the power generation amount predicted by the power generation amount prediction unit after a predetermined period. further comprising, said control means based on the correction result of the power generation amount correction means, according to claim 1 for controlling the electrical device to determine whether to operate the electric apparatus by the generated power of the photovoltaic device Housing energy system as described in. It further comprises consumption correction means for comparing the power consumption amount for a predetermined period predicted by the consumption amount prediction means with the actual measurement value for the predetermined period, and correcting the prediction result of the consumption amount prediction means after the predetermined period. , the control means based on the correction result of the consumption amount correcting means, the photovoltaic by the power generated by the device to determine whether to operate the electrical device for controlling the electrical device according to claim 1 or claim Item 3. The residential energy system according to item 2. A plurality of said electrical device, said control means, when the prediction result of the power generation amount prediction means is greater than the prediction result of the consumption prediction means, an electric device operable from the electrical equipment multiple The residential energy system according to any one of claims 1 to 3, wherein the residential energy system is selected and controlled to start operation of the selected electrical device.   The weather information acquired by the acquisition means includes rainfall information, and the control means further controls at least one of an awning and a window opening / closing device provided in a house when the rain information is acquired by the acquisition means The residential energy system according to any one of claims 1 to 4. The battery further includes a storage battery for storing electric power used in a house,
Residential energy system according to any one of claims 1 to 5 wherein the control means, for when the generated power surplus even when operated before Symbol electrical equipment, to further control so as to charge the storage battery.

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