JP6598070B2 - Energy prediction system - Google Patents

Description

  The present invention relates to an energy prediction system, and more particularly to an energy prediction system used in a power generation system capable of outputting electric power to an electric power system.

  2. Description of the Related Art Conventionally, a solar power generation system including a distributed power source that performs grid connection with a commercial power source and a display unit that displays whether power is purchased from the commercial power source side or sold to the commercial power source side is known. (For example, refer to Patent Document 1). The solar power generation system described in Patent Document 1 makes it easy to know whether power is being purchased or sold.

JP-A-11-225441

  A power generation system in which an electric power company having a power system suppresses power output to a power system from a power generation system (power generation system using renewable energy, for example, a solar power generation system) that is connected to a commercial power source. May instruct the owner of Hereinafter, the instruction to suppress the output of power from the power generation system to the power system is referred to as “output suppression”. The electric power company requests the owner of the power generation system to control output by specifying a period.

  If the power company does not request output suppression, the power generation system shall output the surplus power generated when the distributed power source generates electricity exceeding the power consumed by the power company to the power system and sell it to the power company. Can do. However, when output suppression is requested, in order to sell power to an electric power company, the power output to the power system must be suppressed to a predetermined power. Therefore, there is a possibility that the power that can be generated by the distributed power source during the period of time when output suppression is applied includes “waste power” that cannot be sold or consumed in-house. This wasted power is called “waste power”.

  The present invention has been made in view of the above problems, and is an energy prediction system capable of predicting power that cannot be output to a power system or consumed by a plurality of loads as predicted waste power during a period in which output suppression is applied. The purpose is to provide.

  The energy prediction system of the present invention includes an acquisition unit that acquires schedule information regarding output suppression for a power generation system capable of outputting power to a plurality of loads and power systems, and the power generation system generates power during a target period that is subject to output suppression. A generated power prediction unit that predicts possible power as predicted generated power, a used power prediction unit that predicts a total of used power of the plurality of loads in the target period as predicted used power, and the power generation in the target period An output power prediction unit that predicts, as predicted output power, power that is allowed to be output from the system to the power system; and a calculation that subtracts the predicted used power and the predicted output power from the predicted generated power And a waste power prediction unit that predicts power.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to estimate the electric power which cannot be output to an electric power grid | system | group among the electric power which a power generation system produces | generates, or can be consumed by several load as prediction waste electric power.

1 is a schematic block diagram of an energy prediction system according to Embodiment 1. FIG. It is a graph explaining the prediction waste electric power which the energy prediction system which concerns on Embodiment 1 estimates. It is another graph explaining the prediction waste electric power which the energy prediction system which concerns on Embodiment 1 estimates. It is explanatory drawing of the display part of the energy prediction system which concerns on Embodiment 1. FIG. It is another explanatory drawing of the display part of the energy prediction system which concerns on Embodiment 1. FIG. It is a graph explaining the electric power used which the energy prediction system concerning Embodiment 1 estimates. It is a schematic block diagram of the energy prediction system which concerns on Embodiment 2. FIG. It is explanatory drawing of the display part of the energy prediction system which concerns on Embodiment 2. FIG. It is another explanatory drawing of the display part of the energy prediction system which concerns on Embodiment 2. FIG. FIG. 10A is an explanatory diagram of a display unit that displays the power of the energy prediction system according to the second embodiment. FIG. 10B is another explanatory diagram of a display unit that displays the power of the energy prediction system according to the second embodiment. It is explanatory drawing of the display part which displays the graph of the electric energy of the energy prediction system which concerns on Embodiment 2. FIG. It is explanatory drawing of the display part which displays the effect amount of the energy prediction system which concerns on Embodiment 2. FIG.

(Embodiment 1)
The energy prediction system 1 of this embodiment is demonstrated based on FIGS. As shown in FIG. 1, the energy prediction system 1 is used in a power generation system 100 having a distributed power source 102 for outputting (selling) power to an electric power company (for example, a power company). The power generation system 100 according to this embodiment includes a distributed power source 102 and a power conditioner 103. The distributed power source 102 includes at least a solar cell. The distributed power source 102 of this embodiment further includes a storage battery. The power generation system 100 is connected to the power system 104 via the distribution board 109. The distribution board 109 outputs power supplied from at least one of the power conditioner 103 and the power system 104 to the load 105.

  When the power generated by the power generation system 100 exceeds the power consumed (in other words, self-consumed) (for example, the total power consumed by the plurality of loads 105), surplus power is generated. The surplus power is power obtained by subtracting the power consumed from the power generated by the power generation system 100. The power generation system 100 can sell electric power to an electric power company by outputting surplus power to the electric power system 104. The power output from the power generation system 100 to the power system 104 is referred to as “power sales power”.

  By the way, the electric utility may request the power generation system 100 to suppress the electric power output to the electric power system 104 for a predetermined period. An instruction to suppress power output from the power generation system 100 to the power system 104 is referred to as “output suppression”. In order to sell electric power, the power generation system 100 must suppress the electric power selling power S1 to be equal to or less than the limit value B1 when receiving an output suppression request from an electric power company or the like. The limit value B1 is a value that specifies the upper limit of the power sale power. Hereinafter, the value that specifies the upper limit of the sold power in the target period T2 (see FIG. 2) in which the electric power company requests output suppression is referred to as “limit value B1”.

  The power generation system 100 suppresses the generated power G1, which is the output from the power conditioner 103, to be equal to or less than the limit value B1, as a method of selling power when output suppression is requested.

  If the surplus power exceeds the limit value B1 during the period when the output is being suppressed, “waste power” that cannot be sold or consumed among the power that can be generated by the power generation system 100 is generated. This wasted power is called “waste power”. During the period when the output is suppressed, even if the power generation system 100 can generate power exceeding the limit value B1, the power conditioner 103 sets the output of the generated power G1 to be equal to or less than the limit value B1, so that waste power is reduced. Arise. In other words, the waste power is power that cannot be effectively used by the user of the power generation system 100 among power that can be generated by the distributed power source 102.

  When not selling power, the power conditioner 103 does not limit the generated power G1 to the limit value B1 or less, but controls the generated power G1 according to the power that can be consumed. For example, even when the distributed power source 102 including a solar cell can supply power in fine weather, the power conditioner 103 can acquire only power that can be consumed from the distributed power source 102. In this case, the difference between the maximum power that can be supplied by the distributed power source 102 and the power that the power conditioner 103 actually acquires from the distributed power source 102 is wasted power. Therefore, there is a possibility that waste power is generated during the period when the output is suppressed regardless of the presence or absence of the sold power.

  The energy prediction system 1 of the present embodiment predicts waste power during a period in which output suppression is requested. The energy prediction system 1 can prompt the user of the power generation system 100 (the user of the energy prediction system 1) to use wasted power. The energy prediction system 1 can make it easy to reduce waste power by urging the user of the power generation system 100 to increase the power consumption during a period in which output suppression is requested.

  The power generation system 100 of this embodiment is provided in a detached house that is an example of a customer facility. The energy prediction system 1 is used by a resident of a detached house (a user of the power generation system 100).

  The energy prediction system 1 according to the present embodiment communicates with a server apparatus 101 such as an electric power company by wireless communication using radio waves. More specifically, the energy prediction system 1 communicates with a network to which the server apparatus 101 is connected by wireless communication. The power conditioner 103 is electrically connected to the distributed power source 102, the electrical load 105, and the power system 104 via the distribution board 109.

  The plurality of loads 105 are composed of a plurality of electric devices. The plurality of loads 105 are, for example, an electric water heater for a bath, an electric water heater, a washing machine, a rice cooker, and an electric heater. More specifically, the plurality of loads 105 include a first load 106 (specific load), a second load 107 (specific load), and a third load 108. Each of the first load 106 to the third load 108 includes at least one electric device. Hereinafter, when the first load 106, the second load 107, and the third load 108 are not distinguished, the first load 106, the second load 107, and the third load 108 are referred to as “load 105”. The first load 106 is an electrical device scheduled to operate in the first period T1 in FIG. The second load 107 is an electric device scheduled to operate in the second period T3 in FIG. The third load 108 is an electrical device scheduled to operate in the target period T2 in FIG. The first load 106 to the third load 108 will be described later.

  The distribution board 109 outputs power supplied from at least one of the power generation system 100 and the power system 104 to the load 105. The distribution board 109 has a function of outputting the power of the power generation system 100 output from the power conditioner 103 to the power system 104 (reverse power flow). By outputting the electric power from the power conditioner 103 to the electric power system 104, the owner of the power generation system 100 (a power sales contractor with an electric power company or the like) sells electric power to the electric power company or the like. The power that the power generation system 100 sells to the power system 104 is referred to as the sold power S1.

  The server apparatus 101 transmits (sends) schedule information D1 including a target period T2 for which output suppression is requested. The schedule information D1 includes at least one target period T2. The schedule information D1 includes the timing t2 of the start of the target period T2, the timing t3 of the end of the target period T2, and information specifying the degree of output suppression in the target period T2.

  The electric utility may specify the limit value B1 based on the degree of output suppression. The degree of output suppression is, for example, a ratio to the maximum power that can be output by the power generation system 100. For example, if the maximum output of the power generation system 100 is 10 [kW] and the degree of output suppression is 40%, the limit value B1 is 4 [kW]. In addition, the degree of output suppression may be, for example, a ratio to the maximum power that the power generation system 100 can output to the power system 104.

  Timings t2 and t3 are date information. When the schedule information D1 includes a plurality of target periods T2, the schedule information D1 includes a “degree of output suppression” that differs for each target period T2. Based on the schedule information D1, the electric power company can adjust the power sales power of the power generation system 100 in a plurality of target periods T2 (that is, power purchased by an electric power company or the like). In the following description, one target period T2 among the plurality of target periods T2 will be described as an example.

  The power generation system 100 has, for example, a wireless communication function using radio waves. The power generation system 100 acquires information related to the start timing t2 of the target period T2 (see FIG. 2) for which output suppression is requested and the end timing t3 of the target period T2. The power generation system 100 receives the information from the energy prediction system 1 as an example. The power generation system 100 is not limited to performing communication with the energy prediction system 1. For example, even if the power generation system 100 communicates with the server apparatus 101 through the Internet line or the like by wired communication or wireless communication, information on the target period T2 is acquired. Good.

  As shown in FIG. 1, the energy prediction system 1 includes an acquisition unit 2, a generated power prediction unit 4, a used power prediction unit 8, a sold power prediction unit 5 (output power prediction unit), and a waste power prediction unit. 6. The energy prediction system 1 of the present embodiment further includes a display control unit 90, a determination unit 10, a load designation unit 11, a communication control unit 7, a display unit 9, a first storage unit 12 (storage unit), A second storage unit 70.

  The energy prediction system 1 of this embodiment has a microcomputer 60 as a main configuration. By executing the program read from the memory by the microcomputer 60, the communication control unit 7, the waste power prediction unit 6, the generated power prediction unit 4, the sold power prediction unit 5, the used power prediction unit 8, To realize. Moreover, the energy prediction system 1 implement | achieves the display control part 90, the judgment part 10, and the load designation | designated part 11 by running the program which the microcomputer 60 read from memory. The display unit 9, the display control unit 90, the determination unit 10, and the load designation unit 11 will be described later.

  As an example, the second storage unit 70 includes an EEPROM (Electrically Erasable Programmable Read-Only Memory). The second storage unit 70 holds the power value of the maximum sold power that the power generation system 100 can output to the power system 104. This electric power value is an electric power value determined when the power generation system 100 makes a contract for electric power sales with an electric power company or the like. For example, when the maximum output of the power generation system 100 is 10 [kW] and the degree of output suppression is 40%, the maximum value (limit value B1) of the sold power S1 in the target period T2 is 4 [KW].

  The second storage unit 70 further holds a first database, a limit value B1, a second database, and a specified value used for comparison with the predicted waste power EA1. The first database, the limit value B1, and the specified value will be described later.

  The acquisition unit 2 has an antenna that receives radio waves transmitted from the server apparatus 101. The acquisition unit 2 acquires the schedule information D1 from the server device 101. The communication control unit 7 acquires information included in the signal acquired by the acquisition unit 2 and outputs the information to the control unit 71. In addition to the schedule information D1, the acquisition unit 2 acquires weather information as an example. The weather information is transmitted from an external server device other than the server device 101 or the like. As an example, the weather information includes hourly weather forecast information for one day (24 hours), temperature information, and humidity information. As an example, the communication control unit 7 causes the acquisition unit 2 to periodically acquire a signal. The antenna of the acquisition unit 2 is also used for the communication control unit 7 to transmit information related to the target period T2 to the power generation system 100.

  As shown in FIG. 2, the generated power prediction unit 4 predicts the power that can be output by the power conditioner 103 in the target period T2 as the predicted generated power EG1. Since the maximum value of the predicted generated power EG1 varies depending on the power generation status of the solar cell, it varies depending on the time. The generated power prediction unit 4 predicts the predicted generated power EG1 in the (future) target period T2 based on the generated power G1 actually output by the power conditioner 103 in a past fixed period (for example, several days). The generated power prediction unit 4 predicts the predicted generated power EG1 based on the “first database” that records the generated power G1 for each date and time in the past year. The first database is stored in the second storage unit 70 as an example. As an example, the generated power prediction unit 4 of the present embodiment is based on the transition of the generated power G1 at a specific time (for example, the past several days) included in the first database and the weather information acquired by the communication control unit 7. The predicted generated power EG1 is predicted. As an example, the generated power prediction unit 4 changes the predicted value of the predicted generated power EG1 according to the length of the sunshine time in the target period T2. For example, the generated power prediction unit 4 obtains the predicted generated power EG1 by multiplying the power value (for example, an average value) determined from the transition of the generated power G1 at a specific time and the value of the sunshine time of the weather forecast. As another example, the generated power prediction unit 4 predicts the predicted generated power EG1 based on at least one of the schedule information D1, the weather information, the past generated power G1, and the remaining power of the storage battery. May be. Further, the power actually output by the power conditioner 103 with respect to the predicted generated power EG1 is referred to as “generated power G1”, and will be described separately from the predicted generated power EG1. The generated power prediction unit 4 may be configured to predict the power that can be generated by the distributed power source 102 as the predicted generated power EG1 instead of the output power from the power conditioner 103.

  The used power prediction unit 8 predicts the consumed power C1 of the plurality of loads 105 in the target period T2 as the predicted used power EC1. On the other hand, in the following description, the power actually consumed by the plurality of loads 105 is referred to as “power consumption C1”, and will be described separately from the predicted power consumption EC1. “Power consumption C1 of the plurality of loads 105” is power consumption of the plurality of loads 105 as a whole. As an example, the power consumption prediction unit 8 predicts the predicted power consumption EC1 based on the transition of the power consumption C1 of the entire plurality of loads 105 in a past fixed period (for example, several days).

  The second database holds information about the total power consumption consumed by the plurality of loads 105 in a past fixed period (for example, transition of power consumption). The second database is stored in the second storage unit 70. As an example, the power consumption prediction unit 8 predicts the predicted power consumption EC1 for the target period T2 based on the transition of power consumption on the day one week before the target period T2.

  Based on the limit value B1, the power sales power prediction unit 5 predicts the power output to the power system 104 in the target period T2 as the predicted power sales power ES1. For example, when the limit value B1 changes for each target period T2, the power sale power prediction unit 5 calculates the predicted power sale by subtracting the predicted power usage EC1 from the limit value B1 corresponding to each target period T2. Predict power ES1. In the following description, the power that the power generation system 100 actually outputs (sells power) to the power system 104 (in the target period T2) is referred to as “power sales power S1”, and the predicted power sales power ES1 and the section It explains separately.

  The waste power prediction unit 6 predicts the waste power in the target period T2 as the predicted waste power EA1. “Predicted waste power EA1” is power obtained by calculating the predicted power consumption EC1 and the predicted power sales power ES1 from the predicted power generation EG1 in the target period T2. The predicted power sales power ES1 is assumed to be positive when subtracting the predicted power usage EC1 from the limit value B1. When the predicted power usage EC1 exceeds the limit value B1, the value of the predicted power sales power ES1 is negative. In this case, the waste power prediction unit 6 regards the predicted power sales power ES1 as zero.

  The predicted waste power EA1 is a predicted value of power that cannot be sold or consumed in the target period T2 among the power that can be generated by the power generation system 100. Predicted waste power EA1 is expressed as EA1 = EG1-EC1-ES1.

  The wasted power prediction unit 6 acquires the predicted generated power EG1 from the generated power prediction unit 4 and acquires the predicted power sale power ES1 from the power sales power prediction unit 5. The waste power predicting unit 6 obtains the predicted waste power EA1 by subtracting the predicted power usage EC1 and the predicted power sales power ES1 from the predicted power generation EG1. In the following description, power that cannot be used because the power conditioner 103 does not acquire power from the distributed power source 102 even though there is power that the distributed power source 102 can supply is referred to as “waste power A1”. This will be described separately from the predicted waste power EA1. The wasted power A1 is power that has not been sold or consumed in the generated power G1 that is actually generated by the power generation system 100, and is represented by A1 = G1-C1-S1.

  The waste power prediction unit 6 further determines whether or not the predicted waste power EA1 exceeds a specified value (for example, 1 [kW]). The specified value of the present embodiment is approximately 1 [kW] as an example, but is not limited to this value. The prescribed value is a value held in the second storage unit 70 as an example.

  The waste power prediction unit 6 compares the predicted waste power EA1 with a specified value. More specifically, the waste power prediction unit 6 outputs a prediction result as to whether or not the predicted waste power EA1 exceeds a specified value to the display control unit 90 when the predicted power sale power ES1 is regarded as almost zero. That is, the waste power prediction unit 6 can predict whether or not the predicted waste power EA1 when the power is not sold in the target period T2 exceeds the specified value in addition to the prediction of the predicted waste power EA1. The display control unit 90 will be described later.

  An operation in which the power conditioner 103 controls the generated power G1 in the target period T2 will be described with reference to FIG. The power conditioner 103 reduces the generated power G1 to the limit value B1 when power is output (sold) to the power system 104 in the target period T2 in which output suppression is required. That is, the maximum value of the generated power G1 at the time of selling power during the target period T2 is limited to the limit value B1. Therefore, the predicted waste power EA1 in the target period T2 is power obtained by subtracting the limit value B1 from the predicted generated power EG1.

  On the other hand, when the power generation system 100 supplies power to the plurality of loads 105 without selling power during the target period T2 in which output suppression is required, the power conditioner 103 responds to the power consumption C1 of the plurality of loads 105. The generated power G1 is output. In this case, the predicted power sale power ES1 is zero, but the output of the generated power G1 of the power conditioner 103 is not limited to the limit value B1. That is, the generated power G1 is substantially equal to the power consumption C1. For example, the waste power A1 can be reduced by causing the power generation system 100 to consume the generated power as the power consumption C1 in the target period T2 and to increase the power consumption C1 beyond the limit value B1.

  Next, in the target period T2 in which the output suppression is required, refer to FIG. 3 for the operation in which the waste power prediction unit 6 predicts the predicted waste power EA1 by switching between the case where the generated power G1 is sold and the case where it is consumed. To explain. In the following description, the target period T2 for which output suppression is requested is the period from timing t2 to t3. A certain period (period t1 to t2) before the target period T2 for which output suppression is requested is referred to as a “first period T1”. A certain period after the target period T2 (period from timing t3 to t4) is referred to as “second period T3”. The first period T1 and the second period T3 are periods in which output suppression is not requested.

  FIG. 3 shows an example in which the total period of the first period T1, the target period T2, and the second period T3 is 24 hours. For example, the target period T2 is a period from 9:00 to 17:00. In the target period T2, since the sunshine time is longer than the first period T1 and the second period T3, the power generated by the solar cell increases. Therefore, the predicted generated power EG1 becomes the maximum in the target period T2. As an example, the predicted electric power consumption EC1 gradually increases from the morning so as to reach a peak at night. In the first period T1, the predicted used power EC1 exceeds the predicted generated power EG1 in the early morning. When the predicted generated power EG1 increases as the sun rises, the predicted generated power EG1 exceeds the predicted used power EC1. This timing is assumed to be t11. In the period from the timing t11 to t21, the predicted generated power EG1 exceeds the predicted used power EC1, so surplus power is generated. The generated power prediction unit 4 predicts the surplus power during the period from the timing t11 to t21 as the predicted power sales power ES1.

  Since the target period T2 is a period for which output suppression is requested, when selling power in the target period T2, the maximum value of the generated power G1 is limited to the limit value B1. When the predicted power usage EC1 gradually increases during power sale and reaches the limit value B1, the predicted power sales power ES1 becomes almost zero. The timing when the predicted power sales power ES1 becomes zero is assumed to be t21. The predicted waste power EA1 (EA10) in the period from timing t2 to t21 (during power sale) is the power obtained by subtracting the limit value B1 from the predicted generated power EG1 in the period from timing t2 to t21.

  The period from the timing t21 to t3 is a period in which the predicted power selling power ES1 is almost zero, so that power cannot be sold (there is no power that can be sold). When the sold power S <b> 1 becomes almost zero, the power conditioner 103 stops selling power and supplies the generated power G <b> 1 to the plurality of loads 105. A period during which power is not sold in the target period T2 (period t2 to t24) is referred to as “period T21”. The timing t24 is a timing close to the second period T3 in the target period T2, and is a timing at which the predicted used power EC1 reaches the predicted generated power EG1.

  The waste power prediction unit 6 predicts waste power EA1 (EA11) when the generated power G1 is consumed by the plurality of loads 105 without selling after the timing t21 when the predicted use power EC1 reaches the limit value B1 during power sale. ). For example, when the actual power consumption C1 is equal to or lower than the generated power G1 in the period from the timing t21 to t3, the power conditioner 103 outputs substantially the same power as the power consumption C1 as the generated power G1.

  In the period from the timing t21 to t24, the predicted waste power EA1 (EA11) is power obtained by subtracting the predicted used power EC1 from the predicted generated power EG1. In the period from the timing t21 to t24, the predicted usage power EC1 is equal to or greater than the limit value B1. Therefore, the predicted wasted power EA1 (EA11) is less than the wasted power that occurs when the generated power G1 is limited to the limit value B1 during the period from the timing t21 to t24.

  When the power consumption can be increased more than the predicted power consumption EC1 (EC11) in the period from the timing t21 to t24, the waste power can be further reduced. For example, when the power used in the period from timing t21 to t24 becomes the predicted power consumption EC1 (EC12) that is larger than the predicted power consumption EC1 (EC11), the predicted waste power EA1 (EA11) further decreases. Note that the timing at which the predicted power usage EC1 (EC12) reaches the predicted power generation EG1 is t23 (t23 <t24). In the period from timing t23 to t3 in FIG. 6, an example in which the predicted usage power EC1 (EC13) is decreased in accordance with the decrease of the predicted usage power EC1 is shown.

  The display unit 9 displays information according to an input signal from the display control unit 90. The display unit 9 prompts the resident to effectively use the predicted waste power EA1 by displaying information on the predicted waste power EA1. The display unit 9 is constituted by a liquid crystal panel as an example.

  The display control unit 90 controls display contents to be displayed on the display unit 9. The display control unit 90 causes the display unit 9 to display information corresponding to at least the predicted wasted power EA1. In addition, the display control unit 90 causes the display unit 9 to display information according to the output results of the determination unit 10 and the load specification unit 11.

  When the prediction result in which the predicted wasted power EA1 (EA11) (see FIG. 3) exceeds the specified value is input from the wasted power predicting unit 6 in the target period T2 in which the output suppression is requested, the display control unit 90 illustrated in FIG. As shown, the message M1 is displayed on the display unit 9. The message M1 includes information indicating that output suppression is requested in the target period T2, and information prompting power saving before the target period T2 and prompting to operate at least one load 105 in the target period T2. included. As an example, the message M1 of the present embodiment further includes date and time information at timings t2 and t3 of the target period T2 and a numerical value indicating the power of the predicted waste power EA1 (EA11). The resident is urged to save power before the target period T2 by the message M1 and easily operates at least one load 105 in the target period T2, so that it is easy to reduce the waste power A1 in the target period T2.

  The load designation unit 11 (see FIG. 1) designates at least one load 105 recommended to be operated among the plurality of loads 105 in the target period T2. For example, the load specifying unit 11 specifies one load 105 based on “load specifying information” stored in the first storage unit 12. “Load designation information” is information for designating at least one load 105 among the plurality of loads 105. The load designation information is information for designating an electric water heater as an example. The electric water heater is an electric device that consumes a relatively large amount of power among the plurality of loads 105. In addition to the electric water heater, the electric device specified by the load specifying information may be, for example, a heater, a washing machine, or the like.

  The display control unit 90 causes the display unit 9 to display the name of the electric device corresponding to the load 105 specified by the load specifying unit 11.

  As shown in FIG. 5, the display control unit 90 causes the display unit 9 to display the name of the electric device of the load 105 specified by the load specifying unit 11. That is, the display control unit 90 causes the display unit 9 to display the message M2 including the name of the electric device of the load 105 specified by the load specifying unit 11 as information for prompting the operation during the target period T2. The message M2 further includes information indicating that output suppression is requested in the target period T2, information prompting the load 105 to operate in the target period T2, and timings t2 and t3 (date and time information) of the target period T2. It is included. The resident can increase the power consumption C1 in the target period T2 by operating the load 105 corresponding to the name of the electric device displayed in the message M2 in the target period T2. Therefore, the wasted power A1 that is wasted during the period from the timing t21 to t24 is reduced. In other words, the resident only has to operate the load 105 corresponding to the name of the electric device displayed in the message M2 without considering which load 105 should be operated in the target period T2, and thus operates in the target period T2. The trouble of selecting the load 105 to be performed is saved.

  The 1st memory | storage part 12 consists of EEPROM as an example. The first storage unit 12 holds load designation information and a third database. The third database is composed of information for each load 105 in a past fixed period. More specifically, the third database includes recognition information (for example, the name of the electric device, the ID of the electric device, etc.) for the determination unit 10 to individually recognize each of the plurality of loads 105, and the plurality of loads 105. Each operation start time and operation end time are included.

  By the way, when at least one of the first load 106 scheduled to operate in the first period T1 and the second load 107 scheduled to operate in the second period T3 operates in the period T21, the period is longer than that in other cases. The power consumption C1 of T21 increases. As an example, refer to FIG. 6 for the case where the first load 106 does not operate in the first period T1 and operates in the period T21, and the second load 107 does not operate in the second period T3 and operates in the period T21. To explain.

  The determination unit 10 recognizes the presence or absence of the first load 106 that operates in the first period T1 among the plurality of loads 105. The determination unit 10 recognizes the presence or absence of the second load 107 that operates in the second period T3. More specifically, as an example, the determination unit 10 recognizes the first load 106 and the second load 107 based on information on the operation state for each of the plurality of loads 105 in a past fixed period (for example, for one month). To do. More specifically, the determination unit 10 divides the plurality of loads 105 into the first load 106 and the second load 107 based on the information on the operation state for each hour of the loads 105. recognize. The determination unit 10 uses the third database held in the first storage unit 12 in order to recognize the plurality of loads 105 as the first load 106 and the second load 107 separately. As an example, an example will be described in which a washing machine that operates from 7:00 to 8:00 and an electric water heater that operates from 19:00 to 20:00 are registered in the third database.

  FIG. 6 is a graph showing a time change between the predicted usage power EC1 (EC11) and the predicted usage power EC1 (EC13) that is larger than the predicted usage power EC1 (EC11). The axis in FIG. 6 is the same as in FIG. For example, the determination unit 10 recognizes that the first load 106 operates in the period T11 from the timing t11 in the first period T1 to the timing t2. The determination unit 10 recognizes that the second load 107 operates in a period T31 from timing t24 to timing t31. The determination unit 10 recognizes the washing machine as the first load 106 and recognizes the electric water heater as the second load 107.

  The load designation unit 11 designates at least one first load 106 from the plurality of first loads 106 based on the recognition result of the determination unit 10. The load designation unit 11 further designates at least one second load 107 from the plurality of second loads 107, and designates two loads in total.

  The display control unit 90 causes the display unit 9 to display the names of electric appliances corresponding to the two loads 105 specified by the load specifying unit 11. At this time, the display control unit 90 also displays a period during which each of the two loads 105 was scheduled to start operation. For example, the display control unit 90 prompts the washing machine that is scheduled to start operation in the period T11 and the electric water heater that is scheduled to start operation in the period T31 to operate in the period T21. Is displayed on the display unit 9. For example, the display control unit 90 prompts the operation start timings of the first load 106 and the second load 107 to be shifted so that the power consumption C1 in the period T21 is larger than the first period T1 and the second period T3. Is displayed on the display unit 9.

  When the resident operates the first load 106 in the period T21 without starting the operation in the period T11, the resident can increase the power consumption in the period T21 from the predicted used power EC11 to the predicted used power EC13. When the resident operates the second load 107 in the period T21 without starting the operation in the period T31, the resident can increase the power consumption in the period T21 from the predicted used power EC11 to the predicted used power EC13.

  FIG. 6 illustrates an example in which the resident operates the washing machine in the period T22 in the period T21 and operates the electric water heater in the period T23 in the period T21. The period T22 is a period from timing t2 to timing t22, and the period T23 is a period from timing t22 to timing t3. Note that the period T22 and the period T23 illustrated in FIG. 6 may have a period overlapping with each other in the period T21.

  When the first load 106 is operated in the period T21 without starting the operation in the period T11, the power consumed by the first load 106 can be sold in the period T11. The power ES1 (see FIG. 3) increases. When the first load 106 is operated in the target period T2 without starting operation in the period T11, the power consumption C1 in the target period T2 is increased by the power consumed by the first load 106.

  The period T31 is a period from the timing t24 to the timing t31. Timing t31 is a timing between timing t3 and timing t4. When the second load 107 is operated in the period T21 without starting the operation in the period T31, the power consumption C1 in the period T21 is increased by the power consumed by the second load 107. Therefore, since the power consumption C1 in the period T21 increases by the total power consumption of the first load 106 and the second load 107, the wasted power A1 in the period T21 can be reduced.

  Note that, during the period T31, since the predicted usage power EC1 (EC11) is equal to or greater than the predicted generated power EG1, power that is insufficient in the period T31 (for example, power purchased from a power company) is reduced by reducing the power consumption C1 in the period T31 ) Can be reduced.

  As described above, the energy prediction system 1 according to the present embodiment includes the acquisition unit 2, the generated power prediction unit 4, the used power prediction unit 8, the power sales power prediction unit 5 (output power prediction unit), and waste. A power prediction unit 6. The acquisition unit 2 acquires schedule information D1 related to output suppression for the power generation system 100 that can output power to the plurality of loads 105 and the power system 104. The generated power prediction unit 4 predicts, as the predicted generated power EG1, the power that can be generated by the power generation system 100 in the target period T2 that is the target of output suppression. The used power prediction unit 8 predicts the total used power of the plurality of loads 105 in the target period T2 as the predicted used power EC1. The power sale power prediction unit 5 (output power prediction unit) predicts the power allowed to be output from the power generation system 100 to the power system 104 in the target period T2 as the predicted power sale power ES1 (predicted output power). The wasted power prediction unit 6 predicts the predicted wasted power EA1 from the predicted generated power EG1 by a calculation that subtracts the predicted used power EC1 and the predicted power sales power ES1 (predicted output power).

  According to the above configuration, the wasted power prediction unit 6 calculates the predicted wasted power EA1 in the target period T2 by subtracting the predicted used power EC1 and the predicted sold power ES1 (predicted output power) from the predicted generated power EG1. Predict. In other words, the energy prediction system 1 can predict, as the predicted waste power EA1, power that cannot be output to the power system 104 or consumed by multiple loads 105 during the target period T2 in which output suppression is applied. it can.

  In the energy prediction system 1 of this embodiment, it is preferable that the schedule information D1 includes the target period T2 and the degree of output suppression in the target period T2. The power sales power prediction unit 5 (output power prediction unit) predicts the predicted power sales power ES1 (predicted output power) based on the schedule information D1.

  According to the above configuration, the power sale power prediction unit 5 (output power prediction unit) can predict the predicted power sale power ES1 based on the schedule information D1. Even when there are a plurality of target periods T2, the power sale power prediction unit 5 (output power prediction unit) predicts the predicted power sales ES1 for each target period T2 based on the degree of output suppression in the target period T2. be able to. Therefore, the waste power prediction unit 6 can predict the predicted waste power EA1 in the target period T2 according to the degree of output suppression.

  In the energy prediction system 1 of the present embodiment, the degree of output suppression in the target period T2 is defined as a ratio with respect to the maximum power that can be output from the power generation system 100 (maximum power permitted by the contract). Is preferred.

  Thereby, the sold power prediction unit 5 (output power prediction unit) can obtain the limit value B1 according to the maximum power that can be output by the power generation system 100. The power sale power prediction unit 5 (output power prediction unit) can predict the predicted power sale power ES1 based on the limit value B1. Therefore, the waste power prediction unit 6 can predict the predicted waste power EA1 based on the degree of output suppression in the target period T2.

  The energy prediction system 1 of the present embodiment preferably includes a display unit 9 and a display control unit 90 that controls the display unit 9. The display control unit 90 causes the display unit 9 to display information corresponding to the comparison result between the predicted wasted power EA1 and the specified value.

  Thereby, the display control unit 90 can cause the display unit 9 to display information according to the comparison result between the predicted wasted power EA1 and the specified value. Therefore, the energy prediction system 1 can prompt the resident to consume power according to the comparison result between the predicted wasted power EA1 and the specified value.

  The energy prediction system 1 according to the present embodiment determines whether there is a specific load (first load 106, second load 107) that is scheduled to operate in a period different from the target period T2 among the plurality of loads 105. It is preferable to provide the part 10. The display control unit 90 displays information that prompts the display unit 9 to operate the specific load during the target period T2 when the predicted waste power EA1 exceeds the specified value and the determination unit 10 determines that there is a specific load. Display.

  As a result, the display control unit 90, when there are specific loads (first load 106, second load 107) among the plurality of loads 105, displays the specific loads (first load 106, second load 107) as the target period. Information prompting the user to operate at T2 can be displayed on the display unit 9. In the present embodiment, the display control unit 90 receives at least one of the first load 106 and the second load 107 as a target period when a prediction result in which the predicted waste power EA1 exceeds the specified value is input from the waste power prediction unit 6. Information prompting to operate at T2 is displayed on the display unit 9. Thereby, the resident can easily operate at least one of the first load 106 and the second load 107 in the target period T2. In addition, when at least one of the first load 106 and the second load 107 operates in the target period T2, the power consumption C1 in at least one of the first period T1 and the second period T3 is suppressed, and more A lot of power can be sold.

  The display control unit 90 displays, on the display unit 9, information that prompts the user to operate at least one load 105 among the plurality of loads 105 in the target period T2 when the predicted waste power EA1 exceeds the specified value in the target period T2. It is preferable to make it.

  As a result, information that prompts the display unit 9 to consume power can be displayed according to the size of the predicted wasted power EA1 compared to the specified value.

  The display control unit 90 displays information that prompts the consumption of power on the display unit 9 when the predicted waste power EA1 exceeds the specified value. However, the display unit 90 also displays the information that prompts the consumption of power to be less than the specified value. 9 displays information. When the prediction result that the predicted waste power EA1 falls below the specified value is input from the waste power prediction unit 6, the display control unit 90 displays information that prompts the operation of at least one load 105 to be stopped in the target period T2. 9 is displayed.

  In this way, the display control unit 90 displays information that prompts the display unit 9 to stop at least one of the plurality of loads 105 when the predicted wasted power EA1 falls below a specified value in the target period T2. Let

  Thereby, in the target period T2, when the predicted combined power EA1 falls below the specified value due to the combined power of the predicted power sales ES1 and the predicted power usage EC1 exceeding the predicted power generation EG1, the power is displayed on the display unit 9. Information prompting you to reduce consumption is displayed. Therefore, the resident is prompted not to increase the power consumption C1 in the target period T2.

  The energy prediction system 1 according to the present embodiment preferably includes a load specifying unit 11 that specifies at least one load 105 among the plurality of loads 105. The display control unit 90 displays information that prompts the display unit 9 to operate at least one load 105 specified by the load specifying unit 11 in the target period T2 when the predicted wasted power EA1 exceeds the specified value in the target period T2. To display.

  This makes it easier for the resident to select at least one load 105 when operating at least one load 105 in the target period T2. Thereby, it becomes easy to reduce the waste power A1 in the target period T2. For example, the load specifying unit 11 can specify the load 105 based on the load specifying information held in the first storage unit 12.

  In the energy prediction system 1 of the present embodiment, it is preferable that the load specifying unit 11 specifies at least one load 105 according to the magnitude of the predicted waste power EA1.

  Thereby, the load designation | designated part 11 can designate the load 105 with large power consumption, for example, so that the electric power of the prediction waste power EA1 is large. Therefore, the load specifying unit 11 can specify the load 105 so that the wasted power A1 can be reduced according to the magnitude of the predicted wasted power EA1.

  By the way, the load specification unit 11 may specify the load 105 based on the use frequency for each load 105. In this case, the 3rd database should just contain the use frequency for every load 105 in the past fixed period. The usage frequency for each load 105 in the past fixed period is, for example, the number of uses in the past fixed time period. As an example, when the specific load 105 is operated every day in a specific time zone, the value of the usage frequency of the specific load 105 in the specific time zone becomes large. The load designation unit 11 designates a load 105 whose use frequency exceeds a predetermined value (for example, four times) among the plurality of loads 105. For example, the load designating unit 11 designates a load 105 to be operated in the target period T2 from a plurality of loads 105 used at least five times in one week. Note that the usage frequency for each load 105 in the past fixed period may be, for example, the number of uses in 24 hours and the number of uses in one week.

  Thus, it is preferable that the energy prediction system 1 is provided with the 1st memory | storage part 12 (memory | storage part) which memorize | stores the usage frequency for every some load 105. FIG. The load designation unit 11 designates a load 105 whose use frequency exceeds a predetermined value among the plurality of loads 105.

  Thereby, the load designation | designated part 11 can designate the load 105 with high use frequency among the some loads 105. FIG. A resident becomes easy to preferentially select the load 105 with high use frequency in the target period T2.

  In the present embodiment, the generated power prediction unit 4 can predict the generated power in the target period T2 based on the weather information and the power generation status in the past certain period. Therefore, the generated power prediction unit 4 can improve the prediction accuracy of the generated power as compared with the case where the prediction is not based on the weather information and the power generation status in a past certain period.

  In the present embodiment, the power usage predicting unit 8 predicts the predicted power usage EC1 using the past power consumption C1 in the plurality of loads 105, so that the predicted power usage EC1 according to the past usage situation in the plurality of loads 105. Can be predicted. For example, the power usage prediction unit 8 predicts the predicted power usage EC1 according to the usage history and usage trends of the plurality of loads 105 by the resident. Therefore, the waste power prediction unit 6 can obtain the predicted waste power EA1 according to the use history and use tendency of the plurality of loads 105 by the resident.

  In the present embodiment, the waste power prediction unit 6 regards the predicted power sale power ES1 as zero when the predicted power sale power ES1 is a non-positive value in the target period T2, and predicts the waste power consumption in the target period T2. Predict whether EA1 will occur. Therefore, the waste power prediction unit 6 can predict whether or not the predicted waste power EA1 is generated regardless of whether or not power is output to the power system 104.

  By the way, the load specifying unit 11 may not specify one first load 106 from among the plurality of first loads 106 and one second load 107 from the plurality of second loads 107. The load designation unit 11 may designate at least one first load 106 or second load 107 from the first load 106 or the second load 107. The display control unit 90 may cause the display unit 9 to display information that promotes power saving in at least one of the first period T1 and the second period T3 and that consumes power in the target period T2.

  The load specifying unit 11 may specify the load 105 to be operated in the target period T2 according to the prediction result of the waste power prediction unit 6 and the magnitude of the power consumption of each of the plurality of loads 105. In this case, as an example, the load specifying unit 11 sets a load having a relatively high power consumption among the plurality of loads 105 as a load of the first group and a load having a power consumption lower than that of the first group as the second group. Identify as load. The load specifying unit 11 selects at least one load from among the loads of the first group when the predicted wasted power EA1 exceeds a predetermined reference value. The load specifying unit 11 selects at least one load from among the loads of the second group when the predicted wasted power EA1 is below a predetermined reference value.

  As an example, the power consumption prediction unit 8 predicts the predicted power consumption EC1 of the target period T2 based on the power consumption of the load 105 at the date and time one week before the target period T2. However, the usage power prediction unit 8 is limited to this date and time. Absent. The power usage prediction unit 8 may predict the predicted power usage EC1 based on the power consumption of the load 105 in at least one period.

  The generated power prediction unit 4 is not limited to predicting the predicted generated power EG1 based on the generated power G1 one week ago. The generated power prediction unit 4 may predict the predicted used power EC1 based on the transition of the generated power G1 in the past period (for example, the previous day).

  The load designation information may be information that designates the load 105 selected by the resident in advance from at least one of the plurality of loads 105. As an example, the energy prediction system 1 includes an operation unit, and a resident selects at least one load 105 by operating the operation unit. Information specifying at least one load 105 selected at that time may be held in the first storage unit 12 as load specification information. Further, the load designation information is not limited to being held in the first storage unit 12 and may be held in the second storage unit 70 as an example.

  The third database held in the first storage unit 12 may be updated based on information acquired by the acquisition unit 2. The control unit 71 updates the third database in the first storage unit 12 based on the information.

  The second storage unit 70 may also serve as the first storage unit 12. The first storage unit 12 and the second storage unit 70 may be configured by a built-in memory of the microcomputer 60.

  The display unit 9 is not limited to being configured by a liquid crystal panel, and may be configured by an organic electroluminescence panel or the like as another example.

  The generated power prediction unit 4 is not limited to predicting the predicted generated power EG1 using both the past generated power G1 and the weather information. The generated power prediction unit 4 may predict the predicted generated power EG1 using at least one of the generated power G1 and the weather information.

  The energy prediction system 1 may further include a power information acquisition unit that communicates with the power conditioner 103 by wired communication or wireless communication. For example, the control unit 71 may update the second database held in the second storage unit 70 based on information received by the power information acquisition unit from an external device. In addition, for example, the energy prediction system 1 may transmit information regarding the limit value B <b> 1 (degree of output suppression) from the power information acquisition unit to the power conditioner 103. The power conditioner 103 can adjust the sold power S1 based on the received information regarding the limit value B1.

  The degree of output suppression is not limited to being specified as a ratio with respect to the maximum power that the power generation system 100 can output to the power system 104, and as an example, an electric power company or the like may directly specify the limit value B1. Further, when the plurality of target periods T2 are included in the schedule information D1, the degree of output suppression and the limit value B1 may be different values for each target period T2, or are common to all target periods T2. It may be a value. The degree of output suppression and the limit value B1 are not limited to being included in the schedule information D1, and may be held in the second storage unit 70 or the like. As an example, when an electric power company or the like designates a predetermined value as an upper limit value of the sold power S1 to the owner of the power generation system 100, the schedule information D1 includes any of the degree of output suppression and the limit value B1. May not be included.

  The distributed power source 102 may generate electric power using, for example, an engine (diesel engine, gasoline engine, gas turbine engine, or the like) that uses fossil energy in addition to a solar battery, a storage battery, and a fuel cell. In addition, for example, the distributed power source 102 may generate power using heat such as wind power generation or waste heat.

  The server apparatus 101 and the network to which the server apparatus 101 is connected may have an appropriate configuration for transmitting the schedule information D1 to the acquisition unit 2.

  The acquisition unit 2 acquires the schedule information D1 from the server device 101 by wireless communication using radio waves, but is not limited to this configuration. The communication method of the acquisition unit 2 may be, for example, wireless communication using light and sound in addition to radio waves. Further, the acquisition unit 2 may acquire the schedule information D1 from the server device 101 by wired communication.

  The communication control unit 7, the control unit 71, the wasted power prediction unit 6, the generated power prediction unit 4, the sold power prediction unit 5, and the used power prediction unit 8 are realized by causing one microcomputer 60 to execute appropriate programs. However, it is not limited to this configuration. The display control unit 90, the load designation unit 11, and the determination unit 10 are realized by causing the above-described one microcomputer to execute an appropriate program, but are not limited to this configuration. The energy prediction system 1 may include two or more microcomputers. The energy prediction system 1 may include an IC (Integrated Circuit) or the like instead of the microcomputer.

  Although the display part 9 demonstrated the example which displays the message M1, M2, the message M1, M2 may contain the figure and the symbol other than a character, for example.

  The generated power predicting unit 4, the sold power predicting unit 5, and the used power predicting unit 8 respectively generate generated power G1, Each value of the power S1 and the power consumption C1 may be predicted.

  The waste power prediction unit 6 may obtain the predicted power consumption EC1 from the predicted power generation EG1 by excluding the power used for charging the storage battery. In the case of a storage battery charged with DC power, the power conditioner 103 can charge the storage battery using DC power of solar power generation. Therefore, when charging the storage battery, the waste power prediction unit 6 may obtain the predicted power consumption EC1 by removing the power used for charging the storage battery from the predicted generated power EG1. When a chargeable device such as a storage battery is charged with the power generated by the distributed power source 102, the predicted waste power EA1 in the target period T2 can be reduced.

  Although the energy prediction system 1 of this embodiment demonstrated the example used in a detached house, it is not limited to this example, You may be used in appropriate facilities, such as a commercial facility.

  As an example, the power of the power generation system 100 may be sold to a power aggregator in addition to the electric power company (electric power company).

  The output suppression includes a request for prohibiting the power generation system 100 from selling power. In this case, the power sales power prediction unit 5 predicts the predicted power sales power ES1 to be zero. In this case, the wasted power A1 is the power obtained by subtracting the power consumption C1 from the generated power G1, and is expressed by an equation, A1 = G1-C1, and is equal to the case where the limit value B1 (power sales power S1) is calculated as zero. . Even in this case, the waste power prediction unit 6 can predict the predicted waste power EA1.

(Embodiment 2)
The energy prediction system 1a of this embodiment is demonstrated based on FIGS. As shown in FIG. 7, the energy prediction system 1 a of the present embodiment further includes a power information acquisition unit 3 in addition to the configuration of the energy prediction system 1 of the first embodiment. The power generation system 100 a according to the present embodiment includes a power conditioner 200 instead of the power conditioner 103. The power conditioner 200 has a function of performing wireless communication using radio waves. The power information acquisition unit 3 is different from the first embodiment in that it communicates with the power conditioner 200 by wireless communication. Distributed power source 102 includes a storage battery 110. In addition, about the structure similar to the energy prediction system 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The power conditioner 200 includes a communication unit 201, a third storage unit 202, and an update unit 203. The communication unit 201 includes an antenna that performs wireless communication using radio waves. The third storage unit 202 holds generated power information DG1, power sales power information DS1 (output power information), and power consumption information DC1. The third storage unit 202 further holds the stored power information DB1. The generated power information DG1 includes information indicating the transition of the generated power G1 output by the power conditioner 200 during a certain period (for example, one year). The power sale power information DS1 includes information representing the transition of the power sold for a certain period (power sale power S1). The power consumption information DC1 includes information representing the transition of the power consumption C1 consumed by the entire plurality of loads 105 during a certain period. The stored power information DB1 is information representing a transition of power consumed when the storage battery 110 of the distributed power source 102 is charged. As an example, the power value of the generated power information DG1, the power value of the sold power information DS1, the power value of the power consumption information DC1, and the power value of the stored power information DB1 are power values measured by the measurement unit, respectively. is there. In addition, since the other structure of the power conditioner 200 is the same as that of the power conditioner 103 of Embodiment 1, it attaches | subjects the same code | symbol and abbreviate | omits description.

  For example, the update unit 203 is realized by the microcomputer 60 reading and executing a program from the memory. The update unit 203 updates the generated power information DG1, the sold power information DS1, the power consumption information DC1, and the stored power information DB1 every time a predetermined time (for example, several seconds) elapses. More specifically, the update unit 203 sets the power value of the generated power G1, the power value of the sold power S1, and the power value of the power consumption C1 measured by the measurement unit each time a predetermined time elapses. The information DG1, the power sale power information DS1, and the power consumption information DC1 are added. The update unit 203 adds the power value of the stored power information DB1 to the stored power information DB1. When the predetermined time is several seconds, it can be considered that the generated power information DG1, the sold power information DS1, the power consumption information DC1, and the stored power information DB1 are updated in real time.

  The third storage unit 202 includes a memory built in the microcomputer 60 as an example.

  The communication unit 201 transmits the generated power information DG1, the sold power information DS1, the power consumption information DC1, and the stored power information DB1 to the power information acquisition unit 3.

  The power information acquisition unit 3 includes an antenna that performs wireless communication using radio waves. The power information acquisition unit 3 receives the generated power information DG1, the sold power information DS1, and the consumed power information DC1, and sets the values of the generated power G1, the sold power S1, and the consumed power C1. It is held in the second storage unit 70. Further, the power information acquisition unit 3 receives the stored power information DB1 and causes the second storage unit 70 to hold the value of the power used for charging the storage battery 110.

  The control unit 71 acquires the value of the generated power G1, the value of the power used for charging the storage battery 110, the value of the sold power S1, and the value of the power consumption C1 from the second storage unit 70. The control unit 71 obtains the value of the wasted power A1 by subtracting the value of the power consumption C1, the value of the power used for charging the storage battery 110, and the value of the sold power S1 from the value of the generated power G1. . The control unit 71 determines whether or not the value of the sold power S1 is substantially zero and the value of the wasted power A1 exceeds a specified value, and notifies the display control unit 90 of the determination result.

  When the display control unit 90 is notified from the control unit 71 that the value of the sold power S1 is almost zero and the value of the wasted power A1 exceeds the specified value, as shown in FIG. 8, the wasted power A1 is generated. A message M3 is displayed on the display unit 9 to inform the resident that he / she is doing. The message M3 further includes information notifying that it is the target period T2 for which output suppression is currently requested, and information for prompting power consumption. The resident can see that the waste power A1 is left by looking at the display unit 9. As an example, the resident can reduce the wasted power A1 in the target period T2 by operating at least one of the non-operating loads 105 among the plurality of loads 105 by looking at the message M3.

  By the way, the state where the wasted power A1 is below the specified value is a state where the power consumption C1 exceeds the generated power G1 in the target period T2. Therefore, when the display control unit 90 is notified that the wasted power A1 is less than the specified value, the display unit 9 displays a message M4 that informs the resident that the power consumption C1 is increasing, as shown in FIG. Display. More specifically, the message M4 is information that prompts the resident to suppress the power consumption C1. The resident can see from the display unit 9 that the power consumption C1 and the power used for charging the storage battery 110 increase as the generated power G1 is exceeded. The resident can reduce the power consumption C1 in the target period T2 by stopping the operation of at least one of the plurality of operating loads 105 by viewing the message M4. As an example, the resident can reduce the power consumption C1 to the generated power G1 or less by setting the plurality of loads 105 to the operation stop state one by one until the message M4 is not displayed. In addition, the resident can stop charging the storage battery 110.

  As shown in FIGS. 10A and 10B, the display control unit 90 includes a value of the generated power G1, a value of the sold power S1, a value of power obtained by subtracting the value of the sold power S1 from the value of the generated power G1, The value of the power consumption C1 and the value of the power used for charging the storage battery 110 are displayed on the display unit 9. The display control unit 90 displays the value of the power generated by the power generation system 100a as a message M13, and displays the value of the sold power S1 as a message M14. The display control unit 90 displays the value of the power consumption C1 as the message M15. When power is used to charge the storage battery 110, the display control unit 90 displays the value of power used to charge the storage battery 110 as a message M18 (see FIG. 10B). Each of the messages M13, M14, M15, and M18 includes information indicating that the power is generated, that the power is sold, that the power is consumed, and that the power is used for charging the storage battery 110. When the power is not used for charging the storage battery 110 (for example, when the value of the power used for charging the storage battery 110 is 0.0 [kW]), the display control unit 90 omits the display of the message M18 (FIG. 10A). The display control unit 90 may be configured not to omit the display of the message M18. In this case, the display control unit 90 displays the message M18 indicating that, for example, “the value of the power used for charging the storage battery 110 is 0.0 [kW]” even if the power is not used for charging the storage battery 110. Is displayed.

  The display control unit 90 displays the value of power obtained by subtracting the limit value B1 from the value of power generated by the power generation system 100a as a message M16 (see FIG. 10B). That is, the message M16 indicates the power generated by the power generation system 100a exceeding the limit value B1. The value indicated by the message M16 is used to calculate an “effect amount” described later.

  The display control unit 90 displays, as a message M17, information indicating that output suppression is requested and that power is being sold during output suppression. The display control unit 90 controls the display unit 9 so that the messages M13 to M18 are updated to the latest information every time a predetermined time elapses. In addition, since the predetermined time is set within several seconds, it can be considered that the display content of the display unit 9 is updated in real time.

  The display control unit 90 further displays the degree of output suppression in the target period T2 as a message M11. Further, the display control unit 90 displays the limit value B1 as the message M12.

  FIG. 10A shows the display unit 9 in a state where power is sold in the target period T2. The generated power G1 output from the power conditioner 200 is equal to the limit value B1 (message M12). Accordingly, the sum of the values displayed in the messages M14 and M15 is equal to the value displayed in the message M12. When the value of the electric power generated by the power generation system 100a is equal to or less than the limit value B1, the display control unit 90 omits the display of the message M16.

  FIG. 10B shows the display unit 9 in a state where no power is sold in the target period T2. When the value of the power sale power S1 is almost zero, the display control unit 90 omits the display of the message M14. The power (message M13) generated by the power generation system 100a is used for charging the storage battery 110 (message M18) and power consumption C1.

  The resident can know the value of the generated power G1 and the value of the power generated exceeding the limit value B1 by looking at the message M13 and the message M16 in the target period T2. Further, the resident can know the power value consumed by the plurality of loads 105 and the power value used for charging the storage battery 110 by viewing the messages M15 and M18. In other words, the display control unit 90 causes the display unit 9 to display the power usage status of the power generation system 100a when output suppression is requested.

  Since the resident can see the usage status of the power generated by the power generation system 100a by looking at the display unit 9, the resident can know the influence of the output suppression on the power generation system 100a. For example, the resident can compare the limit value B1 with the value of the power sale power S1 by looking at the messages M12, 14 (see FIG. 10A). In addition, since the display unit 9 of FIG. 10B indicates that the power of the wasted power A1 is used for the charging power of the storage battery 110, the resident who has seen the display unit 9 is actually wasted power that was wasted. It can be seen that A1 is almost zero.

  The display control unit 90 may be configured to further display the value of the wasted power A1 as a message. In that case, the resident can know the value of the wasted power A1.

  As an example, when the resident operates the operation unit included in the energy prediction system 1a, the display control unit 90 can switch the display screen to be displayed on the display unit 9 according to the operation.

  The display control unit 90 causes the display unit 9 to display a graph of the value of the generated power G1 over the past certain period MT1 (for example, for one month) and a graph of the value of the power sale power S1 over the past certain period MT1. Can do. In addition, for example, the display control unit 90 causes the display unit 9 to display a graph of the power amount of the generated power G1 over the past certain period MT1 and a graph of the power amount of the sold power S1 over the past certain period MT1. be able to. When the resident operates the operation unit, the display control unit 90 displays a graph of the value (or power amount) of the generated power G1 and the value (or power amount) of the sold power S1 in the past certain period MT1 according to the operation content. Is displayed on the display unit 9. As shown in FIG. 11, the display control unit 90 displays a graph of the generated power G1 as a graph MG1, and displays a graph of the sold power S1 as a graph MS1. In addition, in FIG. 11, the example which is displaying the graph of the electric energy of the generated electric power G1 and the graph of the electric energy of the sold power S1 is shown. On the horizontal axis of the graphs MG1 and MS1, a scale obtained by dividing the past fixed period MT1 by a fixed time interval (for example, in units of one day) is displayed. The fixed time interval may be a unit of one day, a unit of one week, a unit of half a year, a unit of one year, or the like. Further, when the fixed time interval is 1 hour unit or less, the display unit on the vertical axis may be the power.

  The display control unit 90 causes the display unit 9 to display the profit when the amount of power exceeding the limit value B1 is converted into money among the power generated by the power generation system 100a in the target period T2. As a method of converting electric power into an amount of money, for example, there is a calculation method of profit when assuming that the electric power can be sold.

  If power is sold during the target period T2, the power generation system 100a cannot output the power exceeding the limit value B1 as the generated power G1 during power sale even if the power generation can exceed the limit value B1. When power is generated exceeding the limit value B1 without selling power, the display control unit 90 converts the power consumed exceeding the limit value B1 into a monetary amount and causes the display unit 9 to display it. In other words, assuming that power generated exceeding the limit value B1 can be sold, the profit at that time is displayed on the display unit 9. Hereinafter, this profit is referred to as “effective amount”. The amount of effect increases as the wasted power A1 is smaller. Since the amount of effect increases as the waste power A1 decreases, the resident (user of the power generation system 100a) can consume the waste power of the generated power G1 as the charge power and power consumption C1 of the storage battery 110. It becomes easy to realize this.

  As shown in FIG. 12, the display control unit 90 causes the display unit 9 to display the effect amount in the past certain period MT1 (for example, July 1 to July 31) as a graph MM1. On the horizontal axis of the graph MM1, a scale obtained by dividing the past fixed period MT1 by a fixed time interval (for example, in units of one day) is displayed. The resident can know that the waste power A1 can be reduced by knowing the value of the effect amount from the graph MM1.

  As described above, the energy prediction system 1a of the present embodiment includes the power information acquisition unit 3. The power information acquisition unit 3 generates power information DG1 indicating power generated by the power generation system 100a (power generation power G1), and power sale power information indicating power output by the power generation system 100a to the power system 104 (power sales power S1). DS1 (output power information) is acquired at least. The display control unit 90 causes the display unit 9 to display the power represented by the generated power information DG1 (value of the generated power G1) and the power represented by the sold power information DS1 (value of the sold power S1).

  According to the above configuration, the display control unit 90 causes the display unit 9 to display the generated power and the sold power. The resident can compare the actual generated power with the sold power by looking at the information displayed on the display unit 9. In addition, the resident can know the influence of the output suppression on the power generation system 100a by looking at the display unit 9.

  The display control unit 90 divides both the generated power information DG1 over the past fixed period MT1 and the sold power information DS1 (output power information) over the past fixed period MT1 on the display unit 9 by dividing them at fixed time intervals. It is preferable to make it. An example of the fixed time interval is one day.

  According to the above configuration, the display control unit 90 causes the display unit 9 to display the value of the generated power G1 and the value of the sold power S1 over the past certain period MT1. The resident can see the influence of the output suppression on the power generation system 100a by looking at the transition of the generated power G1 and the sold power S1 in the past fixed period MT1 by looking at the display unit 9. The resident can consider which load 105 of the plurality of loads 105 should be operated according to the transition of the generated power G1 and the sold power S1. Therefore, the energy prediction system 1a can promote the use of the wasted power A1 at least in the target period T2 where output suppression is applied.

  It is preferable that the power information acquisition unit 3 further acquires power consumption information DC1 representing power consumed by at least the plurality of loads 105 (value of power consumption C1). The display control unit 90 causes the display unit 9 to display the power represented by the power consumption information DC1 (value of the power consumption C1).

  According to the above configuration, the display control unit 90 causes the display unit 9 to display the value of the power consumption C1 consumed by the plurality of loads 105. The resident can know how much power is consumed by the plurality of loads 105 from the generated power G1 (that is, the value of the power consumption C1).

  In the present embodiment, the power consumption information DC1 includes power consumed by the plurality of loads 105 (value of power consumption C1) and power used for charging the storage battery 110. Therefore, the display control unit 90 displays the power used for charging the storage battery 110 as the message M18. The resident can know how much electric power is used for charging the storage battery 110 from the generated electric power G1.

  The power information acquisition unit 3 acquires the power consumption information DC1 every time a predetermined time (30 seconds in the present embodiment) elapses, and the display control unit 90 displays the display content of the display unit 9 every time the predetermined time elapses. It is preferable to update.

  Thereby, the display control part 90 updates the display content of the display part 9 whenever predetermined time passes. In the energy prediction system 1a of the present embodiment, the display control unit 90 updates the display content of the display unit 9 within a few seconds, so that the resident can know the power consumption C1 in real time.

  By the way, in the energy prediction system 1a of this embodiment, although the control part 71 has calculated | required the value of the waste power A1, it replaces with the control part 71 and the waste power prediction part 6 may obtain | require the value of the waste power A1.

  The predetermined time is not limited to being set within a few seconds, and may be set to an appropriate length such as within a few minutes or within a few hours.

  By the way, the power information acquisition unit 3, the control unit 71, the communication control unit 7, and the display control unit 90 in the energy prediction system 1 a of the present embodiment can be applied to the energy prediction system 1 of the first embodiment. is there. More specifically, the energy prediction system 1 of the first embodiment may include the power information acquisition unit 3 in the energy prediction system 1a of the present embodiment. The control unit 71, the communication control unit 7, and the display control unit 90 in the energy prediction system 1 of the first embodiment are respectively the control unit 71, the communication control unit 7, and the display control unit described in the present embodiment. 90 may have the same function.

  The display control unit 90 may cause the display unit 9 to display at least one of the predicted power sales power ES1, the predicted waste power EA1, the predicted generated power EG1, and the waste power A1. In that case, the display control unit 90 may display information to be displayed on the display unit 9 as a graph, a numerical value, and a graphic. For example, in addition to the display content of the display unit 9 shown in FIG. 10, the display control unit 90 displays the value of at least one of the predicted power sales ES1, the predicted waste power EA1, the predicted generated power EG1, and the waste power A1. You may be comprised so that it may make.

  Although the display control part 90 demonstrated the example which displays the messages M11-M18 on the display part 9 as a character, the messages M11-M18 may contain a figure, a symbol, etc. as an example.

  The communication unit 201 transmits the generated power information DG1, the power sale power information DS1, and the power consumption information DC1. Of these pieces of information, only the latest information acquired by the update unit 203 is transmitted. It may be configured. In this case, for example, when the communication unit 201 receives a signal requesting the power sale power information DS1, the power sale power information DS1, and the power consumption information DC1 from the power information acquisition unit 3 in the past certain period. Each information for a certain period in the past may be transmitted. Further, the communication unit 201 may individually transmit the generated power information DG1, the sold power information DS1, and the power consumption information DC1 in response to a request from the power information acquisition unit 3.

  The power consumption information DC1, the power sale power information DS1, the power sale power information DS1, and the stored power information DB1 are not limited to power values, but may be power values.

  The control unit 71 may be configured to control the operation of the at least one load 105 when the power information acquisition unit 3 performs wireless communication with at least one of the plurality of loads 105. In other words, the energy prediction system 1 a may include the control unit 71 and the power information acquisition unit 3 that communicates with at least one load 105 among the plurality of loads 105. The control unit 71 causes the power information acquisition unit 3 to transmit (send) a control signal that controls whether to start or stop the operation of at least one load 105 with which the power information acquisition unit 3 communicates. A load 105 having a function of communicating with the power information acquisition unit 3 is a load 105a, a first load 106 having a function of communicating with the power information acquisition unit 3 is a first load 106a, and a first having a function of communicating with the power information acquisition unit 3 The two loads 107 are referred to as second loads 107a. When the load specified by the load specifying unit 11 is any one of the load 105a, the first load 106a, and the second load 107a, the control unit 71 sets each of the load 105a, the first load 106a, and the second load 107a. The operation is started in the target period T2. As an example, the control unit 71 does not operate the first load 106a in the first period T1, but operates it in the target period T2 instead. The controller 71 does not operate the second load 107a in the second period T3, but operates it in the target period T2 instead. As a result, since the power consumption C1 in the target period T2 increases, the waste power A1 decreases. Further, the control unit 71 may stop the operations of the load 105a, the first load 106a, and the second load 107a during the target period T2. In this case, since the resident does not have to start and stop the operation for each of the load 105a, the first load 106a, and the second load 107a, the power consumption C1 is temporarily increased only in the target period T2. It becomes easy.

  Further, the power information acquisition unit 3 communicates with a control device that controls the operation of at least one of the load 105a, the first load 106a, and the second load 107a, the first load 106a, and the second load 107a. It may be configured. In other words, the energy prediction system 1a controls the operation of at least one of the load 105a, the first load 106a, and the second load 107a, the first load 106a, and the second load 107a through the control device. May be.

  Note that the method in which the power information acquisition unit 3 performs communication for each of the load 105a, the first load 106a, and the second load 107a may be wireless communication using light and sound in addition to wireless communication using radio waves. Wired communication may be used.

1, 1a Energy prediction system 2 Acquisition unit 3 Power information acquisition unit 4 Generated power prediction unit 5 Power sale power prediction unit (output power prediction unit)
6 Waste power prediction unit 8 Used power prediction unit 9 Display unit 10 Determination unit 11 Load specification unit 12 First storage unit (storage unit)
90 Display control unit 100, 100a Power generation system 101 Server device 105 Load 106 First load (specific load)
107 Second load (specific load)
D1 Schedule information DC1 Power consumption information DG1 Generated power information DS1 Power selling power information (output power information)
EA1 Predicted waste power EC1 Predicted power consumption EG1 Predicted generated power ES1 Predicted power sales (predicted output power)
T1 First period T2 Target period T3 Second period

Claims (14)

An acquisition unit for acquiring schedule information regarding output suppression for a power generation system capable of outputting power to a plurality of loads and an electric power system;
A generated power prediction unit that predicts, as predicted generated power, power that can be generated by the power generation system in a target period that is subject to output suppression;
A power usage prediction unit that predicts the total power usage of the plurality of loads in the target period as predicted power usage;
An output power prediction unit that predicts, as predicted output power, power that is allowed to be output from the power generation system to the power system in the target period;
A waste power prediction unit that predicts a predicted waste power by a calculation of subtracting the predicted use power and the predicted output power from the predicted generated power;
An energy prediction system characterized by comprising: The schedule information includes the target period and the degree of the output suppression in the target period.
The energy prediction system according to claim 1, wherein the output power prediction unit predicts the predicted output power based on the schedule information. 3. The energy prediction system according to claim 2, wherein the degree of output suppression in the target period is defined by a ratio to the maximum power that can be output from the power generation system. A display unit;
A display control unit for controlling the display unit;
Further comprising
The energy prediction system according to any one of claims 1 to 3, wherein the display control unit causes the display unit to display information according to a comparison result between the predicted waste power and a specified value. A judgment unit for judging whether or not there is a specific load scheduled to operate in a period different from the target period among the plurality of loads;
The display control unit, when the predicted waste power exceeds the specified value and the determination unit determines that the specific load is present, information that prompts the specific load to operate during the target period, It displays on a display part. The energy prediction system of Claim 4 characterized by the above-mentioned. The display control unit displays, on the display unit, information that prompts the user to operate at least one of the plurality of loads in the target period when the predicted waste power exceeds the specified value in the target period. The energy prediction system according to claim 4, wherein: The display control unit displays, on the display unit, information prompting to stop at least one of the plurality of loads in the target period when the predicted waste power is lower than the specified value in the target period. The energy prediction system according to any one of claims 4 to 6, wherein: A load designating unit for designating at least one of the plurality of loads;
The display control unit displays information that prompts the display unit to operate the at least one load specified by the load specifying unit in the target period when the predicted waste power exceeds the specified value in the target period. The energy prediction system according to any one of claims 4 to 7, wherein the energy prediction system is displayed. The energy prediction system according to claim 8, wherein the load specifying unit specifies the at least one load in accordance with a magnitude of the predicted waste power. A storage unit for storing the usage frequency for each of the plurality of loads;
The energy predicting system according to claim 8 or 9, wherein the load designating unit designates a load in which the use frequency exceeds a predetermined value among the plurality of loads. A power information acquisition unit that acquires at least the generated power information indicating the power generated by the power generation system and the output power information indicating the power output by the power generation system to the power system;
The said display control part displays the electric power represented by the said generated electric power information, and the electric power represented by the said output electric power information on the said display part. The any one of Claims 4-10 characterized by the above-mentioned. Energy prediction system. The display control unit causes the display unit to display both the generated power information over a certain past period and the output power information over the past certain period at a predetermined time interval. Item 12. The energy prediction system according to Item 11. The power information acquisition unit further acquires power consumption information representing power consumed by at least the plurality of loads,
The energy prediction system according to claim 11 or 12, wherein the display control unit causes the display unit to display power represented by the power consumption information. The power information acquisition unit acquires the power consumption information every time a predetermined time elapses,
The energy predicting system according to claim 13, wherein the display control unit updates display contents of the display unit every time the predetermined time elapses.

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