JP6046938B2 - Power supply system - Google Patents

Description

  The present invention relates to a power supply system, and more particularly to a power supply system that controls power supply to a plurality of power consumers.

  In the technique described in Patent Document 1, a power meter that remotely reads the power consumption consumed at each supply destination and the surplus power stored in the power storage device via power line carrier communication, and the power meter A management server that manages the power supply of each supply destination while aggregating power consumption information and surplus power amount information, which are metered information, via power line carrier communication, and each management server aggregates consumption It has been proposed to perform power distribution between each supply destination and each area based on the relationship between the power amount information and the surplus power amount information. It has also been proposed to correct the distribution mode for power distribution based on weather information.

JP 2011-83086 A

  In the technique described in Patent Document 1, it is described that power consumption and surplus power are obtained based on a weather forecast. However, since a weather forecast does not necessarily match an actual weather situation, an appropriate power distribution is performed. There is room for improvement in making decisions.

  The present invention has been made in consideration of the above facts, and an object of the present invention is to perform appropriate power distribution according to actual weather conditions.

In order to achieve the above object, the invention described in claim 1 includes a prediction unit that predicts, for each region, the power generation amount and the power consumption amount of a plurality of regions each including a plurality of dwelling units; Detecting means for detecting at least one of the power consumption amount or a predetermined physical quantity that varies depending on weather conditions; estimating means for estimating a current state transition of weather conditions based on a detection result of the detecting means; and the estimating means Correcting the prediction result of the prediction means based on the estimation result of, determining power distribution to each region based on the corrected prediction result, and control means for controlling the power distribution according to the determination result , The control means does not use the estimation result of the estimation means, based on the prediction result of the prediction means, for an area straddling a predetermined terrain where the transition of weather conditions is interrupted. To determine the power distribution of each region Te.

  According to the first aspect of the present invention, the predicting means generates power generation amounts in a plurality of regions each including a plurality of dwelling units (for example, various power generations such as a solar power generation device, a wind power generation device, a hydropower generation device, and a fuel cell). The power generation amount of the apparatus) and the power consumption amount (the power consumption amount of the dwelling unit or business office included in each region) are predicted for each region. For example, the power generation amount and the power consumption amount in each region are predicted based on the date, season, weather forecast, and the like.

The detection means detects at least one of the power generation amount and the power consumption amount in a plurality of regions, or a predetermined physical quantity that varies depending on the weather condition, and the estimation means determines the current state of the weather condition based on the detection result of the detection means. Transition is guessed. For example, the amount of power generated by the solar power generator, the operating status (power consumption) of the air conditioner, the set temperature, etc. vary depending on the weather conditions. It can be estimated by means. That is, as in the third aspect of the invention, when the detection unit detects the power generation amount of the solar power generation device as the power generation amount, the estimation unit determines the weather condition based on the power generation amount of the solar power generation device. You may make it guess. Further, as in the invention described in claim 4 , when the detection means detects the physical quantity, the outside air temperature and the set temperature of the air conditioner in each dwelling unit may be detected as the physical quantity. When the physical quantity is detected as in the invention described in 5 , the hot water usage status of the regenerator in each dwelling unit may be detected as the physical quantity.

  In the control means, the prediction result of the prediction means is corrected based on the estimation result of the estimation means, and the power distribution to each region is determined based on the corrected prediction result, and the power distribution is controlled according to the determination result. Is done.

  In other words, it is possible to determine the power distribution according to the current weather by estimating the transition of the weather situation by the estimation means and correcting the prediction result of the power generation amount and the power consumption amount. Appropriate power distribution can be performed.

  As in the invention described in claim 2, the predicting means predicts the power generation amount and the power consumption based on the weather forecast, and the control means performs prediction by the predicting means based on the estimation result of the estimating means. You may make it correct | amend the prediction result of a prediction means by correct | amending the weather forecast used when performing.

Further, the control means for the regions straddling the predetermined terrain choppy transition of weather conditions, without using the speculative result of the estimating means, that determine the power allocation for each region based on the prediction result of the prediction means . For example, even in adjacent areas, the transition of weather conditions is interrupted in areas that cross predetermined terrain such as rivers, valleys, hills, mountains, etc. In addition, by determining the power distribution in each region based on the prediction result of the prediction means, it is possible to perform appropriate power distribution according to actual weather conditions.

Further, according to the present invention, as in the invention described in claim 6 , based on the determination result of the power distribution in each area by the control means, an efficiency representing an efficient usage method of the electric equipment for the dwelling units in each area There may be further provided providing means for providing the digitized information. In this case, as in the invention described in claim 8, it is further provided with a granting unit for granting a predetermined point to a dwelling unit that has efficiently used the electrical equipment based on the efficiency information. It may be.

  As described above, according to the present invention, it is possible to determine the power distribution according to the current weather by estimating the transition of weather conditions and correcting the prediction results of the power generation amount and the power consumption amount. There is an effect that proper power distribution according to actual weather conditions can be performed.

It is a schematic diagram which shows the outline of the electric power supply system concerning embodiment of this invention. 1 is a block diagram showing a schematic configuration of a power supply system according to an embodiment of the present invention. It is a block diagram which shows schematic structure of a server computer, a regional information center computer, BEMS, HEMS, and a power generation company computer. It is a block diagram which shows the structural example of the electric power supply system of each dwelling unit 11 or the establishment 13. It is a figure which shows an example of the information exchanged in each of a central information center, a regional information center, each dwelling unit, a business establishment, and a power generation company. It is a figure which shows the transition example of a weather condition. It is a figure which shows the example in which the transition of a weather condition interrupts, (A) shows the example in which the transition of a weather condition interrupts by a river, (B) shows the example in which the transition of a weather condition interrupts by a mountain. It is a flowchart which shows an example of the process performed by HEMS and BEMS in the electric power supply system concerning embodiment of this invention. It is a flowchart which shows an example of the process performed with the area information center computer in the electric power supply system concerning embodiment of this invention. It is a flowchart which shows an example of the process performed with the server computer of the central information center in the electric power supply system concerning embodiment of this invention.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing an outline of a power supply system according to an embodiment of the present invention. In FIG. 1, the solid line arrows indicate the flow of power, and the dotted lines indicate the information flow.

  A power supply system 10 according to an embodiment of the present invention includes a regional information center that monitors power consumption in a region and various types of power such as generated power and stored power for each region including a plurality of dwelling units 11 and offices 13. 12 is provided. For example, as shown in FIG. 1, the regional information center 12 is provided in a plain region A, a light source region B, and a seaside region C. , Power generated by various power generators (for example, solar power generators, wind power generators, and natural energy generators such as hydroelectric power generators) in the dwelling unit 11 and the business establishment 13, and the stored power of the storage batteries provided in the dwelling units 11 and the business establishment 13 Etc. are monitored.

  In addition, a central information center 14 is provided that aggregates the monitoring results of the regional information centers 12 in each region and controls power supply to each region based on the monitoring results. The central information center 14 predicts the power consumption and power generation amount in each region based on the monitoring result of the power in each region and determines the power supply to each region to control the power supply.

  In addition, the basic power supply to each region is performed by the power generation company 16, but when surplus power exists in each region, the central information center 14 controls the power interchange between the regions. To do.

  FIG. 2 is a block diagram showing a schematic configuration of the power supply system 10 according to the embodiment of the present invention.

  The central information center 14 is provided with a server computer 18, the power generation company 16 is provided with a power generation company computer 26, and the regional information center 12 is provided with a regional information center computer 20. In addition, a BEMS (Building and Energy Management System) 23 is provided in each office 13 in each region, and a HEMS (Home Energy Management System) 22 is provided in the dwelling unit 11 in each region. Each of them is connected via a network 24, and the server computer 18 communicates with the BEMS 23, the HEMS 22, the regional information center 12, the power generation company computer 26, etc., thereby monitoring the power status to each region. Power supply (power interchange between regions, etc.) is controlled.

  FIG. 3 is a block diagram showing a schematic configuration of the server computer 18, the regional information center computer 20, the BEMS 23, the HEMS 22, and the power generation company computer 26. The server computer 18, the regional information center computer 20, the BEMS 23, the HEMS 22, and the power generation company computer 26 have basic computer configurations and will be described together. 3 indicates what can be connected to the server computer 18, the regional information center computer 20, the BEMS 23, or the HEMS 22, and indicates a portion where all may not be connected.

  The server computer 18, the regional information center computer 20, the BEMS 23, the HEMS 22, and the power generation company computer 26 are configured as a general computer in which a CPU 30, a ROM 32, a RAM 34, and an input / output port 36 are connected to a bus 38. The CPU 30 performs control related to power supply by reading out various programs stored in advance in the ROM 32 and the like to the RAM 34 and developing and executing them. The ROM 32 stores programs for the server computer 18, the BEMS 23, the HEMS 22, and the power generation company computer 26.

  The input / output port 36 is connected to the display unit 40, the operation unit 42, the memory 44, and the like, and to the network 24. Connected to the network 24 are the server computer 18 of the central information center 14, the BEMS 23 of the business office, the HEMS 22 of each dwelling unit, and the power generation company computer 26 of the power generation company 16, so that information can be exchanged. Thereby, the server computer 18 can acquire power information indicating the power status of each dwelling unit 11 or the office 13 from the BEMS 23, the HEMS 22, or the like, and can control the power supply in the area based on the acquired power information. .

  The input / output port 36 is connected to home appliances such as a charge / discharge control device 46, a hot water heater (heat accumulator) 50, and an air conditioner (air conditioner) 54. The power consumption is detected by the CPU 30 and can be controlled by the CPU 30. In the present embodiment, the CPU 30 can monitor the set temperature, usage status, and the like of the air conditioner 54 and can output the monitoring result via the network 24 as necessary.

  A distribution board 48 is connected to the charging / discharging control device 46, and a storage battery 52 provided in each dwelling unit 11 or office 13, a vehicle 56 such as a PHV (Plug-in Hybrid Vehicle) or EV (Electric Vehicle). The vehicle storage battery and various power generation devices 58 mounted on the vehicle can be connected.

  FIG. 4 is a block diagram illustrating a configuration example of the power supply system of each dwelling unit 11 or business office 13. In FIG. 4, a solid line indicates a power line, and a dotted line indicates an information line.

  As shown in FIG. 4, a charge / discharge control device 46, home appliances / equipment such as an air conditioner 54, and a system power supply 64 are connected to the distribution board 48. That is, electric power obtained from the system power supply 64 can be supplied to the home appliances / equipment such as the air conditioner 54 and the charge / discharge control device 46 via the distribution board 48.

  A storage battery 52, a vehicle (vehicle storage battery) 56, various power generation devices 58, and the like are connected to the charge / discharge control device 46, and power generation and power storage are controlled.

  The storage battery 52 is owned by each dwelling unit 11 or the office 13, and when charging, the late-night power of the system power supply 64 and the interchanged power from the outside are supplied via the distribution board 48 and the charge / discharge control device 46, or The power generated by the various power generators 58 is charged by being supplied and, when used, other devices or charge / discharge control devices connected to the distribution board 48 via the charge / discharge control apparatus 46 and the distribution board 48. The battery is supplied to a storage battery connected to 46. In addition, when power is supplied to other dwelling units 11 and other areas, in the present embodiment, the power is supplied from the distribution board 48 via the power network of the system power supply 64.

  The various power generation devices 58 include, for example, power generation devices such as a solar power generation device, a fuel cell, a wind power generation device, and a hydroelectric power generation device, and an automobile generator, and the generated power is connected to the distribution board 48. In addition to being supplied to a storage battery connected to the device and the charge / discharge control device 46, and when surplus is made at the dwelling unit 11 or the business office 13, it can be accommodated to other dwelling units and other areas via the system power supply 64. It is said that.

  As the vehicle 56 connected to the charge / discharge control device 46, a vehicle such as a PHV or EV equipped with a vehicle storage battery that stores electric power used for traveling can be applied. As with the storage battery 52, the vehicle storage battery mounted on the vehicle 56 is supplied with midnight power from the system power supply 64, interchangeable power from the outside, or power generated by various power generators 58 when charging. Charged. In the event of a power failure, the stored power can be supplied to devices connected to the distribution board 48, storage batteries connected to the charge / discharge control device 46, other dwelling units 11 and other areas, etc. Yes.

  Home appliances / equipment such as the air conditioner 54 and the water heater 50 are supplied with power from the system power source 64, the storage battery 52, the vehicle storage battery of the vehicle 56, and the like through the distribution board 48.

  The distribution board 48 is communicably connected to the charge / discharge control device 46 and is connected to devices (such as home appliances / equipment such as an air conditioner 54, water heater 50, charge / discharge control device) connected to the distribution board 48. 46)), and the power consumption detection result is output to the charge / discharge control device 46.

  Next, a specific power supply example performed in the power supply system 10 according to the embodiment of the present invention configured as described above will be described. FIG. 5 is a diagram illustrating an example of information exchanged in each of the central information center 14, the regional information center 12, each dwelling unit 11, the business office 13, and the power generation company 16.

  Each dwelling unit 11 or business office 13 detects power consumption and generated power, detects the power supply / demand situation, and generates power supply / demand information. In addition, a weather forecast is obtained from an organization such as the Japan Meteorological Agency through the network 24 and the like to predict the power generation amount of the solar power generation device and the like, and the power consumption amount is predicted to generate power generation prediction information and consumption prediction information. . Generation of such information is performed by the BEMS 23 and the HEMS 22, and as shown in FIG. 5, the regional information center computer 20 of the regional information center 12 uses the generated power supply and demand information, power generation prediction information, consumption information and the like as individual power information. Send to.

  In the regional information center 12, the regional information center computer 20 aggregates the power information of each region, and transmits power supply / demand information, power generation prediction information, power consumption prediction information, and the like for each region to the central information center 14.

  In the central information center 14, the power supply / demand information, consumption prediction information, and power generation prediction information of each region are transmitted to the power generation company computer 26 of the power generation company 16 by the server computer 18. As a result, the power generation company 16 can calculate a demand forecast for the generated power.

  The power generation company computer 26 of the power generation company 16 generates power generation information and power generation prediction information and transmits them to the server computer 18 of the central information center 14.

  In the server computer 18 of the central information center 14, power supply and demand information, power generation prediction information, and power consumption prediction information transmitted from the regional information center 12, and power generation information and power generation prediction transmitted from the power generation company 16. Based on the information, the power supply is controlled by determining the amount of power supply to the region (power interchange amount between regions, etc.).

  In response to the power supply control from the central information center 14, the regional information center 12 transmits efficiency information representing an efficient usage method of the electrical equipment to the dwelling units 11 and business offices 13 in each region. In the present embodiment, optimum power saving information regarding energy saving and power efficiency use is transmitted to each dwelling unit 11 and business office 13 as efficiency information. For example, when there is more consumption forecast than the amount of power interchange from other areas (when power is insufficient), information for promoting power saving (for example, power saving information indicating a power saving target value in the area) Or information for prompting a shift in the usage time of the device. Furthermore, the set temperature of the air conditioner 54 may be controlled by the HEMS 22 or the BEMS 23. Alternatively, when home appliances / equipment such as the air conditioner 54 are old, information for prompting replacement with a power-saving device may be transmitted.

  In addition, the central information center 14 or the regional information center 12 determines a predetermined point (for example, for the dwelling unit 11 or the business office 13 that has used energy efficiently based on information such as the amount of power consumption and the amount of generated power. You may make it give an electricity bill discount, various coupons, etc.). For example, the server computer 18 or the regional information center computer 20 monitors the power usage status of each dwelling unit 11 or business office 13, and if power consumption is reduced for the power saving information, the degree is as follows. Accordingly, a process of giving a predetermined point to the HEMS 22, the BEMS 23, or the like (for example, a process of returning to a power charge or the like) may be performed.

  As described above, in this embodiment, it is possible to efficiently use power by performing power interchange within and between regions.

  However, since power consumption prediction, power generation prediction, and the like use weather prediction, etc., if the weather prediction is lost, these power predictions are also lost.

  Therefore, in the present embodiment, the prediction of the amount of power consumption and the amount of power generation is corrected by estimating the transition of weather conditions in each region. For example, as shown in FIG. 6, it is estimated that rain and clouds move from region B to region A and then move to region C, and power consumption and power generation prediction are corrected. As a correction method, when it is predicted that it will rain in area B and then in area A, it may be corrected using power consumption, generated power, etc. in area B. The power consumption and the generated power may be corrected using a predetermined rain correction coefficient or the like.

  In addition, as a method of predicting the transition of the weather situation, the transition of the weather situation is estimated based on at least one of the power generation amount and the power consumption amount in each region, or a predetermined physical quantity that changes according to the weather situation. For example, when estimating the transition of the weather situation based on the amount of power, the transition of the weather situation may be estimated based on the transition of the power consumption and surplus power in each area, or the solar power generation device in each area The transition of the weather condition may be estimated from the change in the amount of power generated by the power generation device 58. Alternatively, when estimating changes in weather conditions based on physical quantities that change depending on weather conditions, the weather conditions can be directly detected by installing raindrop sensors, solar radiation sensors, temperature sensors, humidity sensors, etc. in each region. The transition of the weather condition may be estimated by detecting the set temperature of the air conditioner 54 in each region, or the hot water usage of the water heater 50 in each region You may make it guess the transition of a weather condition by detecting (frequency of use of warm water, preset temperature, etc.).

  Moreover, when estimating the change of the weather condition, the change of the weather condition may be interrupted depending on the terrain condition, so the weather condition may be considered. For example, when there is a river between area A and area C in FIG. 7A, or when there is a mountain between area B and area C in FIG. In addition, since the transition of the weather situation is interrupted by the topography of rivers, valleys, hills, etc., in the case of such an area straddling the predetermined topography, the transition of the weather situation may not be estimated.

  Subsequently, an example of specific processing performed by executing the programs stored in the BEMS 23, the HEMS 22, the regional information center computer 20, and the server computer 18 in the power supply system 10 according to the embodiment of the present invention will be described. To do.

  First, an example of processing performed in the HMES 22 or BEMS 23 of each dwelling unit 11 or business office 13 in the power supply system 10 according to the embodiment of the present invention will be described. FIG. 8 shows power supply according to the embodiment of the present invention. 4 is a flowchart illustrating an example of processing performed by the HEMS 22 and the BEMS 23 in the system 10. Note that the processing of FIG. 8 is performed at predetermined time intervals.

  First, in step 100, the power consumption is detected, and the process proceeds to step 102. That is, the CPU 30 obtains the detection result of the amount of power supplied to the home appliance / equipment such as the air conditioner 54 and the charge / discharge control device 46 detected by the distribution board 48 from the charge / discharge control device 46, thereby reducing the power consumption. Perform detection.

  In step 102, it is determined whether there is a storage battery 52 or not. This determination is performed by detecting whether or not the storage battery 52 is connected to the charge / discharge control device 46. Specifically, the charge / discharge control device 46 has a function of detecting the connection of the storage battery 52, and the charge / discharge control device 46 detects the connection of the storage battery 52 and the CPU 30 acquires the detection result. The If the determination is affirmative, the process proceeds to step 104, and if the determination is negative, the process proceeds to step 106.

  In step 104, the amount of power stored in the storage battery 52 is detected, and the routine proceeds to step 106. The charge amount of the storage battery 52 is detected by the charge / discharge control device 46 detecting the charge amount and the CPU 30 acquiring the detection result.

  In step 106, it is determined whether there is a vehicle storage battery. Similar to step 102, this determination is also made by detecting whether or not a vehicle storage battery (vehicle 56) is connected to the charge / discharge control device 46. If the determination is affirmative, the routine proceeds to step 108. If the result is negative, the process proceeds to step 110.

  In step 108, the amount of power stored in the vehicle storage battery is detected, and the routine proceeds to step 110. Similarly to step 104, the storage amount of the vehicle storage battery is also detected when the CPU 30 acquires the detection result of the storage amount detected by the charge / discharge control device 46.

  In step 110, it is determined whether or not there are various power generation devices 58. This determination is performed by detecting whether or not various power generation devices 58 are connected to the charge / discharge control device 46. Specifically, the charge / discharge control device 46 has a function of detecting the connection of the various power generation devices 58, and the charge / discharge control device 46 detects the connection of the various power generation devices 58 and the CPU 30 acquires the result. Is determined by If the determination is affirmative, the process proceeds to step 112, and if the determination is negative, the process proceeds to step 114.

  In step 112, the power generation amount of the various power generation devices 58 is detected, and the routine proceeds to step 114. The detection of the power generation amount of the various power generation devices 58 is performed by the CPU 30 obtaining the detection result of the power generation amount detected by the charge / discharge control device 46.

  In step 114, power supply / demand information is generated by the CPU 30, and the process proceeds to step 116. As the power supply / demand information, for example, surplus power may be calculated based on the power consumption, the amount of electricity stored, and the amount of power generation detected in each of the above steps, and information representing the surplus power may be generated as the power supply / demand information. In this case, a value obtained by subtracting the amount of power consumption from the total value of the generated power and the amount of stored electricity is obtained as surplus power. When the calculated value is negative, there is no surplus power, and supply to the other is impossible.

  In step 116, the power generation amount and the power consumption amount are predicted, and the routine proceeds to step 118. For example, a history of power generation amount and power consumption amount for each time zone may be stored, and the power generation amount and power consumption amount for each time zone may be predicted from the history. Or you may make it estimate by acquiring the weather forecast of the said area | region from the Meteorological Agency etc. via the network 24, memorize | stored and read out the electric power generation amount and electric power consumption predetermined for every weather forecast. Then, the power generation amount and the power consumption amount for each season and weather forecast may be stored as a history to predict the power generation amount and the power consumption amount. In addition, when the weather forecast is used when predicting the power generation amount and the power consumption amount, in the processing of the central information center 14, since the forecast is corrected by estimating the transition of the weather situation, the weather at the time of prediction Since it is necessary to consider the forecast, the weather forecast at the time of prediction of the power generation amount and the power consumption amount is also transmitted to the central information center 14 via the regional information center 12.

  In step 118, each detection result (the amount of electricity stored in the electricity storage amount 52, the amount of electricity stored in the vehicle storage battery mounted on the vehicle 56, the amount of electricity generated by the various power generation devices 58), the power supply / demand information, and the prediction result are stored in the regional information center 12. The information is transmitted to the regional information center computer 20 via the network 24 and the process proceeds to step 120.

  In step 120, it is determined whether power saving information has been received from the regional information center computer 20. In this determination, it is determined whether or not power saving information, which will be described later, has been received from the regional information center 12. If the determination is negative, the process ends as it is, and if the determination is negative, the process proceeds to step 122.

  In step 122, the power saving information received from the regional information center 12 is displayed on the display unit 40, and the series of processing ends. For example, a power saving target value or the like is displayed as the power saving information, and power saving can be promoted.

  Next, an example of processing performed by the regional information center computer 20 of the regional information center 12 will be described. FIG. 9 is a flowchart showing an example of processing performed by the regional information center computer 20 in the power supply system 10 according to the embodiment of the present invention.

  In step 200, it is determined whether information is received from each dwelling unit 11 or business office 13. That is, it is determined whether or not various information transmitted in the above-described step 118 has been received. If the determination is negative, the process ends and other processes are performed. If the determination is affirmative, The process proceeds to step 202.

  In step 202, the area information is collected and the process proceeds to step 204. That is, information transmitted from each dwelling unit 11 or business office 13 is collected for each region.

  In step 204, the power supply and demand information, power generation prediction information, and power consumption prediction information for each region are transmitted to the server computer 18 of the central information center 14, and the process proceeds to step 206.

  In step 206, it is determined whether power supply information has been received. This determination determines whether or not information related to power supply transmitted from the server computer 18 to be described later has been received. If the determination is negative, a series of processing is terminated and other processing is performed. If the determination is affirmative, the routine proceeds to step 208.

  In step 208, power saving information regarding energy saving and power efficiency utilization in the area based on the power supply information received from the server computer 18 is generated, and the process proceeds to step 210. For example, in the present embodiment, power saving information that represents a power saving target or the like is generated as efficiency information that represents an efficient method of using an electrical device. Specifically, when information indicating power shortage or the like is received as power supply information from the server computer 18, a power saving target value in the area is generated as power saving information.

  In step 210, the generated power saving information is transmitted to each dwelling unit 11 and the business office 13, and a series of processing ends. That is, the above-described step 120 is affirmed.

  Next, an example of processing performed by the server computer 18 of the central information center 14 will be described. FIG. 10 is a flowchart showing an example of processing performed by the server computer 18 of the central information center 14 in the power supply system 10 according to the embodiment of the present invention.

  In step 300, it is determined whether information is received from the regional information center computer 20 of each regional information center 12. The determination is made by determining whether or not the information (power supply / demand information for each region, power generation prediction information, and power consumption prediction information) transmitted in the above step 204 has been received. The process ends and other processes are performed. If the determination is affirmative, the process proceeds to step 302.

  In step 302, the transition of the weather situation is estimated, and the routine proceeds to step 304. In the present embodiment, the transition of weather conditions is estimated based on the transition of each region of the power supply and demand information (the amount of power generated by the solar power generation device, the amount of power consumed by the air conditioner 54, etc.). For example, the amount of power generated by the photovoltaic power generation device, the power consumption of the equipment, the setting of the air conditioner 54, or the operating condition of the air conditioner 54 changes depending on the weather condition. By monitoring these changes, the actual weather condition (sunshine) And changes in temperature, etc.). Specifically, if the range of low-power units in a certain area is expanding from west to east, it is assumed that the clouds are spreading from west to east, and further to the east. It can be estimated that the amount of power generation in the eastern region will decrease and the transition of weather conditions can be estimated. At this time, depending on the terrain, as described with reference to FIGS. 7A and 7B, the transition of the weather condition is interrupted, so it is necessary to estimate the transition of the weather condition in consideration of the terrain. Here, the transition of the weather condition is estimated based on at least one of the power generation amount and the power consumption amount in each area. However, as described above, the detection result of the weather condition in each area (for example, raindrop sensor, solar radiation) The detection results of sensors, temperature sensors, humidity sensors, etc.) may be acquired and the transition of weather conditions may be estimated, or the transition of weather conditions may be estimated by detecting the set temperature of the air conditioner 54 in each region. You may make it carry out, and you may make it guess the transition of a weather condition by monitoring the usage condition etc. of the hot water of the hot water heater 50 of each area.

  In step 304, the predicted power generation amount (power generation prediction information) and the predicted power consumption amount (power consumption prediction information) are corrected based on the weather condition estimation result, and the process proceeds to step 306. That is, since the power generation prediction information and the power consumption prediction information are corrected according to the actual weather situation, the accuracy of the power generation amount and the predicted value of the power consumption amount can be improved. In addition, when the predicted power generation amount and the predicted power consumption amount are predicted using the weather forecast, the forecast power generation amount and the power generation amount are corrected by correcting the weather forecast used in the prediction based on the estimation result of the weather condition. The predicted power consumption may be corrected.

  In step 306, power distribution in each region is determined based on the correction result, power distribution to each region is controlled, and the process proceeds to step 308. In the case of terrain where the transition of the weather situation is interrupted as shown in FIGS. 7A and 7B, the predicted power generation amount and the predicted power consumption amount are not used without using the estimation result of the transition of the weather situation. Based on this, power distribution in each region is determined, and power distribution to each region is controlled.

  In step 308, the power supply information based on the power distribution determined in step 306 is transmitted to the regional information center computer 20 of the regional information center 12, and the series of processes is completed. As the power supply information, for example, in the power distribution determined in step 306, if the power is insufficient even when receiving power interchange from other regions, the information indicating the power shortage and the shortage amount corresponds to the corresponding regional information center. Send to computer 20.

  By performing each process of the power supply system 10 in this way, it is possible to estimate the transition of actual weather conditions and correct the prediction of consumption and power generation, so that more accurate surplus power is calculated and power is distributed. It becomes possible to do.

  In the above embodiment, the regional information center 12 is provided. However, the regional information center 12 is omitted, and information is directly exchanged between the dwelling unit 11 and the business office 13 and the central information center 14 in each region. It is good also as a structure which controls and performs power distribution.

DESCRIPTION OF SYMBOLS 10 Power supply system 11 Dwelling unit 12 Regional information center 13 Establishment 14 Central information center 16 Power generation company 18 Server computer 20 Regional information center computer 22 HEMS
23 BEMS
24 Network 26 Power Generation Company Computer 46 Charge / Discharge Control Device 48 Distribution Panel 50 Water Heater 52 Storage Battery 54 Air Conditioner 56 Vehicle 58 Various Power Generation Devices 64 System Power Supply

Claims (7)

A predicting means for predicting power generation and power consumption in a plurality of regions each including a plurality of dwelling units for each region;
Detecting means for detecting at least one of the power generation amount and the power consumption amount in the plurality of regions, or a predetermined physical amount that varies depending on weather conditions;
Based on the detection result of the detection means, the estimation means for estimating the current transition of the weather condition;
Control means for correcting the prediction result of the prediction means based on the estimation result of the estimation means, determining power distribution to each region based on the corrected prediction result, and controlling power distribution according to the determination result;
Equipped with a,
The control means determines the power distribution of each area based on the prediction result of the prediction means, without using the estimation result of the estimation means, for an area straddling a predetermined terrain where the transition of weather conditions is interrupted. Supply system.   The prediction means predicts the amount of power generation and power consumption based on the weather forecast, and the control means uses the weather forecast used when the prediction means performs prediction based on the estimation result of the estimation means. The power supply system according to claim 1, wherein the prediction result of the prediction unit is corrected by correction. The said estimation means estimates the weather condition based on the power generation amount of the said solar power generation device, when the said detection means detects the power generation amount of a solar power generation device as said power generation amount. The power supply system described in 1. 3. The power supply system according to claim 1, wherein when the detection unit detects the physical quantity, the outside air temperature in each dwelling unit and a set temperature of the air conditioner are detected as the physical quantity . The detection means, when detecting the physical quantity, the power supply system according to claim 1 or claim 2 for detecting a hot water usage蓄温water dispenser in each dwelling unit as the physical quantity. Based on the determination result of the power distribution for each region by the control means, according to claim 1 to 5, further comprising providing means for providing efficient information indicating an efficient usage of the electrical device with respect to dwelling units within each region The power supply system according to any one of the above. The power supply system according to claim 6 , further comprising a granting unit that grants a predetermined point to a dwelling unit that efficiently uses an electric device based on the efficiency information .

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