Power management system
The power management system addresses customer discomfort by creating tailored power-saving plans based on electricity tariffs and environmental conditions, ensuring cost-effective and comfortable energy usage.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- KAWAMURA ELECTRIC INC
- Filing Date
- 2024-12-05
- Publication Date
- 2026-06-17
Smart Images
Figure 2026098328000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a power management system.
Background Art
[0002] Patent Document 1 discloses a generation device that generates control information for controlling equipment of a customer. The generation device includes: a power amount tariff information acquisition unit that acquires information on a fluctuating power amount tariff unit price; a used power information acquisition unit that acquires information on the power used by the customer; and a control information generation unit that generates control information for the customer's equipment at a target time limit, which is the time limit when the equipment is controlled, based on the power amount tariff unit price at the target time limit and the information on the power used by the customer in time limits after the target time limit.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] When reducing the electricity bill in a contract with a market-linked electricity tariff (when aiming to save the electricity bill), as described above, it is generally performed to execute automatic suppression control to reduce the amount of power used during a time period when the electricity tariff unit price is high. When the suppression control is automatically executed, the output of the equipment (such as electrical equipment) automatically decreases. In this case, if the equipment necessary in the customer's environment is operating, the output of this equipment will decrease regardless of the customer's intention. Therefore, there is a risk that the customer may feel discomfort or an inconvenient event may occur to the customer.
[0005] An object of the present invention is to provide a power management system capable of executing power-saving control suitable for a customer. ]>
Means for Solving the Problems
[0006] (1) The power management system according to the present invention is a power management system for managing the power of a target area, comprising: a first acquisition unit that acquires the unit price of electricity for each time period in the target area; a creation unit that acquires the excess time period in which the unit price of electricity acquired by the first acquisition unit is equal to or greater than a first threshold, and creates a power saving control plan for the excess time period; a second acquisition unit that acquires environmental information relating to the environment of the target area; a determination unit that determines whether or not the target area satisfies pre-set discomfort conditions based on the environmental information; and a control unit that performs processing relating to the execution of the power saving control plan created by the creation unit based on the determination result of the determination unit, wherein if the determination unit determines that the discomfort conditions are met, the control unit does not execute control based on the power saving control plan during the excess time period, and if the determination unit determines that the discomfort conditions are not met, it notifies the administrator of the target area of information relating to the power saving control plan.
[0007] In the power management system according to the present invention, the control unit, if it determines in the determination unit that the conditions for discomfort are met, will not execute control based on the power saving control plan during the excess time period. In the power management system, for example, if the temperature (air temperature, room temperature, etc.), humidity, etc. of the target area are high, control based on the power saving control plan will not be executed in the target area. Therefore, in the power management system, a decrease in the output of, for example, air conditioners in the target area is avoided, thus preventing consumers from experiencing discomfort.
[0008] Furthermore, if the control unit determines that the unpleasant conditions are not met, it notifies the administrator of the target area of information regarding the power saving control plan. In this way, the power management system, for example, if the temperature, humidity, etc., of the target area are not high (i.e., the environment of the target area is comfortable), notifies the administrator of the target area of information regarding the power saving control plan, allowing them to recognize the power saving control plan and decide whether or not to implement it according to the customer's circumstances (e.g., visitors). Therefore, the power management system can prevent undesirable events from occurring for the customer (e.g., a decrease in the output of necessary equipment while visitors are present). As described above, the power management system can implement power saving control that is appropriate for the customer.
[0009] (2) In the power management system described in (1) above, a second threshold is set for the electricity unit price that is greater than the first threshold. The control unit may, when the judgment unit determines that the unpleasant conditions are not met and the electricity unit price is above the second threshold during the excess period, execute control based on the power saving control plan. When the judgment unit determines that the unpleasant conditions are not met and the electricity unit price is below the second threshold during the excess period, the control unit may notify the administrator of the target area of information related to the power saving control plan. In this configuration, electricity costs can be effectively reduced by executing control based on the power saving control plan during the excess period when the electricity unit price is above the second threshold, i.e., during the period when the electricity unit price is considerably high. Furthermore, the power management system can avoid undesirable events for consumers by notifying the administrator of the target area of information related to the power saving control plan during the excess period when the electricity unit price is below the second threshold.
[0010] (3) In the power management system described in (1) or (2) above, an estimation unit may be provided to estimate the number of people present in the target area, and the control unit may perform processing related to the execution of a power saving control plan based on the estimation result of the estimation unit. For example, if there are many people in the target area, if a power saving control plan is executed in that area and the output of air conditioners and lighting is reduced, many people will feel uncomfortable. On the other hand, for example, if there are hardly any people in the target area, even if a power saving control plan is executed in that area and the output of air conditioners and lighting is reduced, it is unlikely that people will feel uncomfortable or that any undesirable events will occur. In this way, by performing processing related to the execution of a power saving control plan based on the estimation result of the estimation unit, power saving control appropriate to the consumer can be implemented.
[0011] (4) In the power management system described in (3) above, the control unit may set priorities for each target area based on the estimation results of the estimation unit, and in target areas with high priority, it may not execute control based on the power saving control plan during excess hours, and in target areas with low priority, it may notify the administrator of the target area of information related to the power saving control plan. In this configuration, by setting priorities, power saving control can be executed according to the environment and conditions of the target area. [Effects of the Invention]
[0012] According to the present invention, it is possible to implement power-saving control that is suitable for consumers. [Brief explanation of the drawing]
[0013] [Figure 1] Figure 1 shows the configuration of the power management system. [Figure 2] Figure 2 shows the configuration of the control device. [Figure 3] Figures 3(a), 3(b), 3(c), and 3(d) are diagrams illustrating the outline of the power saving control plan in the plan creation unit. [Figure 4] Figure 4 is a flowchart showing the operation of the power management system. [Figure 5] Figures 5(a), 5(b), 5(c), and 5(d) are diagrams illustrating the outline of the power saving control plan in the plan creation unit. [Modes for carrying out the invention]
[0014] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant descriptions will be omitted.
[0015] Figure 1 shows the configuration of a power management system. The power management system 1 shown in Figure 1 is applied to the power management of a target facility F, such as a building, and is a system aimed at reducing electricity costs (energy saving). As shown in Figure 1, the power management system 1 comprises a control device 3, an external environment acquisition unit 5, and a terminal 7.
[0016] Each area (target area) managed by the control device 3 is equipped with an area environment acquisition unit 9, an estimation unit 11, and equipment 13. In this embodiment, the target facility F includes one or more areas. In this embodiment, the target facility F includes multiple areas A1, A2, ..., AN. In the following description, the multiple areas A1, A2, ..., AN may also be referred to as "Area A". Area A can be arbitrarily set by the customer. Area A may be set for each floor, or for each office space, if the target facility F is a building.
[0017] The area environment acquisition unit 9 acquires information related to the environment of each area A. The area environment acquisition unit 9 acquires temperature, illuminance, etc., for each area A. The area environment acquisition unit 9 may be a thermometer, illuminance meter, etc. The area environment acquisition unit 9 transmits the acquired area environment information related to the environment of each area A to the control device 3.
[0018] The estimation unit 11 estimates the number of people present in area A. The estimation unit 11 estimates the number of people present in area A based on, for example, data on entry and exit using a card key at the entrance and exit of area A, a motion sensor, meeting schedule data (data including location, time, and number of people), etc. The estimation unit 11 transmits estimation information related to the estimated number of people to the control device 3.
[0019] The equipment 13 is load equipment installed in area A. The equipment 13 can be, for example, an air conditioner, lighting, a ventilation fan, an elevator, etc.
[0020] The control device 3 comprehensively controls the power management system 1. The control device 3 is composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. Programs for controlling the power management system 1 are stored in the ROM. The control device 3 may be composed of one device (computer) or multiple devices. When using multiple devices, these devices are connected via a communication network such as the Internet or an intranet, thereby logically constructing one control device 3. The control device 3 may be provided in the target facility F or outside the target facility F. The control device 3 may control one target facility F or multiple target facilities F.
[0021] Figure 2 is a diagram showing the configuration of the control device 3. As shown in Figure 2, the control device 3 includes a communication unit 30, a unit price acquisition unit (first acquisition unit) 31, a plan creation unit 32, an environmental information acquisition unit (second acquisition unit) 33, a determination unit 34, and a control unit 35.
[0022] The communication unit 30 can communicate with the external environment acquisition unit 5, the terminal 7, the area environment acquisition unit 9 of each area A, the estimation unit 11, and the equipment 13. The communication unit 30 can be connected to the Internet and acquire various information via the Internet.
[0023] The unit price acquisition unit 31 acquires the electricity unit price for each time period in area A. The unit price acquisition unit 31 acquires the electricity unit price from the electricity trading market (e.g., JEPX) via the communication unit 30. At a predetermined timing, the unit price acquisition unit 31 acquires the electricity unit price for the next day (the day before the day on which the power saving control plan is created). In this embodiment, the electricity unit price is, for example, the electricity unit price every 30 minutes [yen / kWh]. The unit price acquisition unit 31 acquires the electricity unit price for 24 hours (48 time slots). The unit price acquisition unit 31 outputs the unit price information related to the acquired electricity unit price to the plan creation unit 32.
[0024] The plan creation unit 32 acquires the excess time period in which the electricity unit price acquired by the unit price acquisition unit 31 is equal to or greater than the first threshold, and creates an energy-saving control plan for the excess time period. In this embodiment, the plan creation unit 32 determines whether the electricity unit price for each 30-minute interval is equal to or greater than the first threshold. The first threshold is a value arbitrarily set by the consumer. The first threshold can be changed as appropriate. In a contract for market-linked electricity rates, the first threshold can be set according to the energy-saving target (electricity rate) desired by the consumer.
[0025] Energy-saving control plans can be set according to each piece of equipment 13 in Area A. Energy-saving control plans include, for example, plans to reduce power consumption (e.g., reducing by XX kWh, XX% reduction, etc.), plans to reduce electricity charges based on the unit price of electricity (e.g., reducing by XX yen, XX% reduction, etc.), and plans to reduce power consumption by changing the settings of equipment (e.g., changing the set temperature of air conditioners, turning off indoor lights intermittently, operating elevators intermittently, etc.).
[0026] Figures 3(a), 3(b), 3(c), and 3(d) are diagrams illustrating the outline of the power saving control plan in the plan creation unit 32. In the graph shown in Figure 3(a), the horizontal axis represents time, and the vertical axis represents the power unit price. The graph shown in Figure 3(a) shows the power unit price EP, power consumption PC, and the first threshold TH1.
[0027] The plan creation unit 32 acquires the excess time period that is above the first threshold TH1. In the example shown in Figure 3(a), the electricity unit price is above the first threshold TH1 during the time period from 16:00 to 21:30. The plan creation unit 32 acquires the time period from 16:00 to 21:30 as the excess time period. The plan creation unit 32 creates a power saving control plan for each area A for the excess time period (from 16:00 to 21:30) ("Created" in Figure 3(a)). The plan creation unit 32 does not create a power saving control plan for time periods other than the excess time period ("Not Created" in Figure 3(a)). The plan creation unit 32 outputs the plan information related to the created power saving control plan to the control unit 35.
[0028] The environmental information acquisition unit 33 acquires environmental information related to the environment of each area A. The environmental information acquisition unit 33 acquires environmental information for each area A based on external environmental information transmitted from the external environmental acquisition unit 5, area environmental information transmitted from the area environmental acquisition unit 9, and various information acquired by the communication unit 30. For example, the environmental information acquisition unit 33 acquires temperature, room temperature, humidity, illuminance, etc., for each area A. The environmental information acquisition unit 33 outputs the acquired environmental information to the judgment unit 34.
[0029] The determination unit 34 determines, based on environmental information, whether or not area A meets pre-set discomfort conditions. The determination unit 34 determines, based on environmental information output from the environmental information acquisition unit 33, whether or not area A meets discomfort conditions. Discomfort conditions may include, for example, the temperature and humidity inside and outside the target facility F, as well as the discomfort index calculated from the temperature and humidity. Discomfort conditions may include, for example, a temperature of XX° or higher, a temperature of XX° or lower, a discomfort index of XX or higher, or a discomfort index of XX or lower. Discomfort conditions may also include, for example, the illuminance inside and outside the target facility F. Discomfort conditions may include, for example, an indoor illuminance of XX lux or less. As shown in Figure 3(c), if the determination unit 34 determines that the discomfort conditions are met, area A is determined to be "uncomfortable". If the determination unit 34 does not determine that the discomfort conditions are met, that is, if it determines that the discomfort conditions are not met, area A is determined to be "comfortable". The determination unit 34 determines whether or not the discomfort conditions are met for each area A and outputs the determination result to the control unit 35.
[0030] The control unit 35 performs processing related to the execution of the power saving control plan created by the plan creation unit 32 based on the judgment result of the judgment unit 34. If the judgment unit 34 determines that the unpleasant conditions are met, the control unit 35 will not execute the control based on the power saving control plan during the excess time period. If the judgment unit 34 determines that the unpleasant conditions are not met, the control unit 35 will notify the administrator of area A of the information related to the power saving control plan.
[0031] As shown in Figure 3(d), if the control unit 35 determines that the environmental information indicates "unpleasant" during the excess time period, it will not execute control based on the power saving control plan during that period. If the environmental information indicates that the environmental information indicates "comfortable" during the excess time period, the control unit 35 will notify the administrator of area A of the plan information related to the power saving control plan. Specifically, the control unit 35 transmits the plan information to the terminal 7 owned by the administrator of area A via the communication unit 30. The administrator of area A can be arbitrarily set by the customer. One or more administrators can be set. The administrator may be, for example, the manager of the target facility F, or a person set for each floor of area A.
[0032] When the control unit 35 receives an instruction from the terminal 7 in response to transmitting plan information, it determines whether or not to execute the power saving control plan based on the content of the instruction. If the content of the instruction indicates that the power saving control plan should be executed, the control unit 35 will execute the power saving control plan. If the content of the instruction indicates that the power saving control plan should not be executed, the control unit 35 will not execute the power saving control plan.
[0033] If no instruction is sent from terminal 7 after plan information has been transmitted, the control unit 35 executes a pre-configured process. This pre-configured process may be either executing the power saving control plan or not executing the power saving control plan. This process can be configured as appropriate by the customer. No instruction is sent from terminal 7 if a predetermined time has elapsed since the plan information was transmitted. This predetermined time can be configured as appropriate.
[0034] The control unit 35 may perform processing related to the execution of the power saving control plan based on the estimation result of the estimation unit 11. When the control unit 35 receives the estimation result transmitted from the estimation unit 11, it sets a priority for each area A based on the estimation result. The control unit 35 sets the priority based on the estimation result, including the number of people, population density, type of area A (room, etc.), etc. The control unit 35 sets the priority so that the priority of area A to which it wants to supply power preferentially is higher, based on the number of people, population density, type of area A (room, etc.), etc. Area A to which it wants to supply power preferentially is an area with a high number of people, population density, etc. The priority can be set in multiple stages (for example, 1 to 5).
[0035] In high-priority area A, the control unit 35 does not execute control based on the power saving control plan during the excess time period. In low-priority area A, the control unit 35 notifies the administrator of the target area of information related to the power saving control plan. High priority means, for example, a priority of "4 or higher". Low priority means, for example, a priority of "3 or lower".
[0036] The external environment acquisition unit 5 acquires information about the environment surrounding the target facility F. The external environment acquisition unit 5 acquires the temperature, illuminance, etc., outside the target facility F. The external environment acquisition unit 5 may be a thermometer, illuminometer, etc. The external environment acquisition unit 5 transmits the acquired external environment information related to the area environment to the control device 3.
[0037] Terminal 7 may be a smartphone, tablet, personal computer, or operating device (including a display unit, operating unit, etc.) owned by the administrator. When Terminal 7 receives plan information transmitted from the control device 3, it notifies the administrator that it has received the plan information via an application, short message, email, social networking service, etc. In response to displaying the plan information, Terminal 7 receives instructions from the administrator regarding the execution or non-execution of the power saving control plan, and transmits information related to those instructions to the control device 3.
[0038] Instructions from the administrator on terminal 7 are accepted by the administrator via touch operations such as button presses within the application if they are applications. Instructions from the administrator on terminal 7 are accepted by the administrator via touch operations on the website opened by clicking the URL contained in the message if they are short messages or similar.
[0039] Next, we will explain the operation of power management system 1. Figure 4 is a flowchart showing the operation of power management system 1.
[0040] As shown in Figure 4, in the power management system 1, first, the unit price acquisition unit 31 acquires the unit price of electricity for each time period in area A (step S01). Next, the plan creation unit 32 determines whether or not there are any time periods exceeding the first threshold TH1 in terms of the unit price (30 minutes) (step S02). If the plan creation unit 32 determines that there are time periods exceeding the threshold (step S02: YES), it creates a power saving control plan for the time periods exceeding the threshold TH1 in which the unit price is equal to or greater than the first threshold TH1 (step S03). If the plan creation unit 32 does not determine that there are time periods exceeding the threshold, that is, if it determines that there are no time periods exceeding the threshold, it proceeds to step S04.
[0041] In step S04, the plan creation unit 32 determines whether it has completed the determination of whether there are any time periods exceeding the first threshold TH1 for the electricity unit price for all time periods (24 hours). If the plan creation unit 32 determines that it has completed the determination (step S04: YES), it proceeds to step S05. If the plan creation unit 32 does not determine that it has completed the determination (step S04: NO), it returns to the process in step S02.
[0042] In step S05, the determination unit 34 determines whether or not the conditions for discomfort (environmental conditions for executing the power saving control plan) are met. If the determination unit 34 determines that the conditions for discomfort are met (step S05: YES), it proceeds to step S08. If the determination unit 34 does not determine that the conditions for discomfort are met (step S05: NO), it proceeds to step S06.
[0043] In step S06, the control unit 35, in response to notifying the administrator of the plan information, determines whether or not there is an instruction to execute the power saving control plan in the instructions sent by the administrator. If the control unit 35 determines that there is an instruction to execute the power saving control plan (step S06: YES), it executes the power saving control plan in the relevant area A (step S07). If the control unit 35 does not determine that there is an instruction to execute the power saving control plan (step S06: NO), it does not execute the power saving control plan in the relevant area A (step S08).
[0044] As explained above, in the power management system 1 according to this embodiment, if the determination unit 34 determines that the conditions for discomfort are met, the control unit 35 will not execute control based on the power saving control plan during the excess time period. In the power management system 1, for example, if the temperature (air temperature, room temperature, etc.), humidity, etc. in area A are high, control based on the power saving control plan will not be executed in area A. Therefore, in the power management system 1, a decrease in the output of, for example, the air conditioner will not occur in area A, thus preventing consumers from experiencing discomfort.
[0045] Furthermore, if the control unit 35 determines that the unpleasant conditions are not met, it notifies the administrator of area A of information regarding the power saving control plan. In this way, the power management system 1, for example, when the temperature, humidity, etc. in area A are not high (when the environment in area A is comfortable), notifies the administrator of area A of information regarding the power saving control plan, allowing them to recognize the power saving control plan and decide whether or not to implement it according to the customer's circumstances (e.g., visitors). Therefore, the power management system 1 can prevent undesirable events from occurring for the customer (e.g., a decrease in the output of necessary equipment while visitors are present). As described above, the power management system 1 can implement power saving control that is appropriate for the customer.
[0046] The power management system 1 according to this embodiment includes an estimation unit 11 that estimates the number of people present in area A. The control unit 35 may perform processing related to the execution of a power saving control plan based on the estimation result of the estimation unit 11. For example, if there are many people in area A, executing a power saving control plan in area A and reducing the output of air conditioners and lighting will cause discomfort to many people. On the other hand, for example, if there are hardly any people in area A, even if a power saving control plan is executed in area A and the output of air conditioners and lighting is reduced, it is unlikely that people will feel discomfort or that any undesirable events will occur. In this way, the power management system 1 can perform power saving control appropriate to the consumer by performing processing related to the execution of a power saving control plan based on the estimation result of the estimation unit 11.
[0047] In the power management system 1 according to this embodiment, the control unit 35 sets a priority for each area A based on the estimation results of the estimation unit 11. In areas A with a high priority, control based on the power saving control plan is not executed during excess hours, and in areas A with a low priority, information related to the power saving control plan is notified to the administrator of the target area. With this configuration, by setting priorities, power saving control can be executed according to the environment and conditions of area A.
[0048] While embodiments of the present invention have been described above, the present invention is not necessarily limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.
[0049] In the above embodiment, one example described is a configuration in which the plan creation unit 32 acquires the excess time period in which the electricity unit price acquired by the unit price acquisition unit 31 is equal to or greater than the first threshold, and creates an energy-saving control plan for the excess time period. However, a second threshold TH2 (see Figure 5(a)) that is greater than the first threshold TH1 may be set for the electricity unit price. The second threshold TH2 is a value that can be arbitrarily set by the consumer. The second threshold TH2 can be changed as appropriate.
[0050] The control unit 35 executes control based on the power saving control plan if the judgment unit 34 determines that the unpleasant conditions are not met and the power unit price is equal to or greater than the second threshold TH2 during the excess time period. If the judgment unit 34 determines that the unpleasant conditions are not met and the power unit price is less than the second threshold TH2 during the excess time period, the control unit 35 notifies the administrator of area A of information related to the power saving control plan.
[0051] Figures 5(a), 5(b), 5(c), and 5(d) are diagrams illustrating the outline of the power saving control plan in the plan creation unit 32. In the graph shown in Figure 5(a), the horizontal axis represents time, and the vertical axis represents the power unit price. The graph shown in Figure 5(a) shows the power unit price EP, the first threshold TH1, and the second threshold TH2.
[0052] As shown in Figure 5(a), the plan creation unit 32 acquires the excess time period that is above the first threshold TH1 and creates a power saving control plan for the excess time period for each area A (indicated as "Created" in Figure 5(a)). The plan creation unit 32 does not create a power saving control plan for time periods other than the excess time period (indicated as "Not Created" in Figure 5(a)).
[0053] As shown in Figure 5(d), if the control unit 35 determines that the environmental information indicates "comfortable" (see Figure 5(c)) during the period exceeding the first threshold TH1 or higher but less than the second threshold TH2, it notifies the administrator of area A of information related to the power saving control plan. If the environmental information indicates that the environmental information indicates "uncomfortable" (see Figure 5(c)) during the period exceeding the second threshold TH2 or higher, the control unit 35 executes control based on the power saving control plan. If the environmental information indicates that the environmental information indicates "uncomfortable" (see Figure 5(c)) during the period exceeding the first threshold TH1 or higher but less than the second threshold TH2, the control unit 35 executes control based on the power saving control plan.
[0054] In this configuration, during periods when the electricity unit price exceeds the second threshold TH2, i.e., during periods when the electricity unit price is considerably high, electricity costs can be effectively reduced by implementing control based on the power saving control plan. Furthermore, in the power management system 1, during periods when the electricity unit price is below the second threshold TH2, information regarding the power saving control plan can be notified to the administrator of Area A, thereby preventing undesirable events from occurring for consumers.
[0055] In the above embodiment, for example, if Area A is a building, the target facility F may be defined by floor, or by workspace. However, the target area may also be defined by the type of equipment and its installation location.
[0056] In the above embodiment, the plan creation unit 32 may create multiple power saving control plans. The control unit 35 notifies the administrator of the plan information, which includes the multiple power saving control plans. Upon receiving the plan information, the administrator selects one of the multiple power saving control plans and instructs whether or not to execute the power saving control plan. [Explanation of Symbols]
[0057] 1...Power management system, 11...Estimation unit, 31...Unit price acquisition unit (first acquisition unit), 33...Environmental information acquisition unit (second acquisition unit), 34...Decision unit, 35...Control unit, TH1...First threshold, TH2...Second threshold.
Claims
1. A power management system for managing the power supply in a target area, A first acquisition unit that acquires the electricity unit price for each time period in the aforementioned target area, A creation unit acquires the excess time period in which the electricity unit price acquired by the first acquisition unit is equal to or greater than a first threshold, and creates an energy-saving control plan for the excess time period, A second acquisition unit acquires environmental information relating to the environment of the aforementioned target area, A determination unit that determines whether the target area meets pre-set discomfort conditions based on the aforementioned environmental information, The system comprises a control unit that performs processing related to the execution of the power saving control plan created by the creation unit based on the determination result of the determination unit, The control unit, If the determination unit determines that the unpleasant conditions are met, it will not execute the power saving control plan during the excess time period. A power management system that, if the judgment unit determines that the unpleasant conditions are not met, notifies the administrator of the target area of information related to the power saving control plan.
2. With respect to the aforementioned power unit price, a second threshold greater than the first threshold is set. The control unit, If the determination unit determines that the unpleasant conditions are not met, and the electricity unit price is above the second threshold during the above-average time period, control based on the power saving control plan will be executed. The power management system according to claim 1, wherein the determination unit determines that the unpleasant conditions are not met and the electricity unit price is below the second threshold for the excess time period, the system notifies the administrator of the target area of information relating to the power saving control plan.
3. The system includes an estimation unit that estimates the number of people present in the target area. The power management system according to claim 1 or 2, wherein the control unit performs processing related to the execution of the power saving control plan based on the estimation result of the number of people by the estimation unit.
4. The control unit, Based on the estimation results of the estimation unit, a priority is set for each of the target areas. In the aforementioned high-priority target area, control based on the power saving control plan will not be executed during the excess time period. The power management system according to claim 3, wherein in the target area with a lower priority, the power management system notifies the administrator of the target area of information relating to the power saving control plan.