JP2013198207A - Facility controller and distributed power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate a distributed power generation system, supplying power to a plurality of electric facilities, efficiently.SOLUTION: A facility controller 100 calculates a time zone, in which power consumption reaches a peak, from prediction results of power consumption of each facility in a tenant 10. The facility controller 100 controls a power storage unit 20 so that the power stored in the power storage unit 20 during the time zone thus calculated is discharged. Consequently, the maximum value of power consumption in each tenant can be prevented from exceeding the contract power. Furthermore, a distributed power generation system is operated efficiently.

Description

  The present invention relates to an equipment controller and a distributed power supply system, and more particularly to an equipment controller that controls electrical equipment and electric power equipment, and a distributed power supply system including the equipment controller.

  With global warming and the development of economic industries that are progressing on a global scale, efforts aimed at reducing energy consumption are regarded as important. In particular, energy consumed in commercial facilities such as tenants is greater than energy consumed in the home. For this reason, if the energy consumed in this type of commercial facility can be reduced, a large energy saving effect can be expected.

  In recent years, attention has been focused on distributed power generation systems as emergency power supplies in the event of a disaster. Management of a distributed power generation system installed in a general home is performed by a user in the home. However, most of the users do not have electrical expertise. Therefore, in order to stably link a commercial power system with strong publicity and a distributed power generation system, a mechanism for managing the power generation system installed in the home is necessary. Accordingly, various techniques for monitoring the state of this type of power generation system have been proposed (see, for example, Patent Document 1).

  The technology disclosed in Patent Document 1 displays information such as the life of a storage battery used as a sub power source of an air conditioner and the amount of stored electricity, and controls the output of the storage battery based on the information. It is.

JP-A-11-72262

  The technique disclosed in Patent Document 1 monitors only a storage battery used as a sub power source of an air conditioner and controls only an output from the storage battery. However, in recent years, power is often supplied from a distributed power generation system such as a solar cell to each of a plurality of electric facilities used in a commercial facility such as a tenant. When the electrical equipment is operated in such a form, it is difficult to efficiently operate the distributed power generation system even using the technique disclosed in Patent Document 1.

  The present invention has been made under the above-described circumstances, and an object thereof is to efficiently operate a distributed power generation system that supplies power to a plurality of electric facilities.

  In order to achieve the above-described object, an equipment controller according to the present invention includes power consumed by each of a plurality of electrical equipments connected to a commercial power system, and power equipment connected to the commercial power system to the electrical equipment. Display means for displaying the supplied power, and control means for controlling the electrical equipment and the power equipment.

  ADVANTAGE OF THE INVENTION According to this invention, the electric equipment connected to a commercial electric power grid | system, and the electric power equipment which supplies electric power to each of these electric equipment can be integratedly controlled by a control means. Therefore, it is possible to efficiently operate power facilities provided separately from the commercial power source.

It is a block diagram which shows the electric equipment installed in the tenant, and the equipment controller which concerns on this embodiment. It is a block diagram of the electric equipment installed in the tenant. It is a block diagram of an equipment controller. It is a figure which shows the transition curve which shows transition of power consumption. It is a block diagram of the equipment controller which concerns on a modification.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an electrical facility installed in a tenant and a facility controller 100 according to the present embodiment. The equipment controller 100 is a control unit that comprehensively controls the electrical equipment used by the tenant 10.

  Each tenant 10 is, for example, a store or an office provided in a commercial facility. In these tenants 10, for example, electrical facilities such as a power storage unit 20, a power generation unit 30, a lighting facility 41, an air conditioning facility 42, and a home appliance 43 are installed.

  FIG. 2 is a block diagram of the electrical equipment installed in the tenant 10. As shown in FIG. 2, the power storage unit 20 includes, for example, a battery 22 composed of a plurality of cells filled with an electrolyte, an inverter 21 that mediates the commercial power system and the battery, and a control device that controls the inverter 21. 23. The control device 23 controls the inverter 21 based on an instruction from the equipment controller 100. Thereby, the electric power from the commercial power system is stored in the battery 22. Then, the electric power stored in the battery 22 is supplied to the commercial power system. The control device 23 measures the amount of power stored in the battery 22 and the current between the commercial power system and the battery 22 and outputs the measurement result to the equipment controller 100.

  In the present embodiment, the power storage unit 20 accumulates electric power mainly at night when the electricity rate is low, and discharges electric power based on an instruction from the equipment controller 100 during the daytime.

  The power generation unit 30 includes a solar battery panel 32 composed of a plurality of cells, an inverter 31 that mediates the solar battery panel and the commercial power system, and a control device 33 that controls the inverter 31. The control device 33 controls the inverter 31 based on an instruction from the equipment controller 100. Thereby, the electric power generated by the solar cell panel 32 is supplied to the commercial power system. The control device 33 measures the electric power generated by the solar cell panel 32 and the current between the commercial power system and the solar cell panel 32 and outputs the measurement result to the equipment controller 100.

The illumination facility 41 is composed of a plurality of illumination devices 51 _{1 to} 51 _N whose light sources are fluorescent lamps, incandescent lamps, or LEDs. Each lighting device 51 may be an illuminating lamp arranged on the ceiling of a room, an illuminating lamp that illuminates a tenant's signboard, or the like. The illuminating device 51 which comprises the illuminating equipment 41 can be operated using the remote control 51a installed in a tenant.

The air conditioning equipment 42 includes a plurality of air conditioning units 52 _{1 to} 52 _N installed indoors or outdoors. For example, the air conditioning unit 52 arranged outdoors such as the roof of a commercial facility is an outdoor unit that exchanges heat between the outside air and the refrigerant. In addition, the air conditioning unit 52 disposed indoors such as an indoor ceiling or wall surface is an indoor unit that performs heat exchange between indoor air and a refrigerant. The air conditioning unit 52 can be operated by a remote controller 52a installed in the tenant.

  The air conditioning units 52 are connected to each other by piping or the like, and the refrigerant circulates through the piping. Thereby, at the time of air_conditioning | cooling, heat absorption is performed by an indoor unit and heat dissipation is performed by an outdoor unit. Moreover, at the time of heating, heat is radiated by the indoor unit and heat is absorbed by the outdoor unit.

  The home appliance 43 is an electrical device connected to the power system via an outlet in the tenant, such as a multifunction machine or a personal computer used in the tenant.

  The equipment controller 100 is a computer that comprehensively monitors the power storage unit 20, the power generation unit 30, the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43. FIG. 3 is a block diagram of the equipment controller 100. As shown in FIG. 3, the equipment controller 100 connects a CPU (Central Processing Unit) 101, a main storage unit 102, an auxiliary storage unit 103, a display unit 104, an input unit 105, an interface unit 106, and the above units. The system bus 107 is provided.

  The CPU 101 executes predetermined processing to be described later according to a program stored in the auxiliary storage unit 103.

  The main storage unit 102 includes a RAM (Random Access Memory) and the like. The main storage unit 102 is used as a work area for the CPU 101.

  The auxiliary storage unit 103 includes a nonvolatile memory such as a ROM (Read Only Memory), a magnetic disk, and a semiconductor memory. The auxiliary storage unit 103 stores a program for executing processing to be described later, parameters, and the like.

  The display unit 104 includes a display unit such as a liquid crystal panel. And based on the instruction | indication of CPU101, the information regarding the electric power consumption in the tenant 10, the electric power generated by the electric power generation unit 30, the quantity of the electric power stored by the electrical storage unit 20, etc. are displayed, for example.

  The input unit 105 includes a keyboard and a pointing device such as a mouse or a touch panel. An instruction to the CPU 101 is input via the input unit 105.

  The interface unit 106 has a serial interface or an analog interface for receiving an analog signal. As shown in FIG. 2, the interface unit 106 includes a control device 23 for the power storage unit 20, a control device 33 for the power generation unit 30, a remote controller 51 a that configures the lighting equipment 41, and a remote controller 52 a that configures the air conditioning equipment 42. Etc. are connected.

  The CPU 101 can control the control device 23 of the power storage unit 20, the control device 33 of the power generation unit 30, the remote control 51 a of the lighting equipment 41, and the remote control 52 a of the air conditioning equipment 42 via the interface unit 106. Moreover, it can communicate with the equipment controller 100 installed in another tenant.

  The interface unit 106 is connected to power measurement units 70 to 73 arranged in the tenant 10. The power measuring unit 70 measures the power supplied from the commercial power system to the tenant 10 and outputs a signal corresponding to the measured value to the interface unit 106. The power measurement units 71 to 73 measure the power supplied to the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43, respectively, and output a signal corresponding to the measurement value to the interface unit 106.

  The CPU 101 can measure the power consumption consumed by each facility by monitoring signals output from the power measurement units 70 to 73 via the interface unit 106.

  The equipment controller 100 configured as described above communicates with the control device 23 of the power storage unit 20, the control device 33 of the power generation unit 30, the remote control 51a of the lighting equipment 41, and the remote control 52a of the air conditioning equipment 42. And the quantity of the electric power stored in the electrical storage unit 20, the electric power generated by the electric power generation unit 30, the information which shows the operating condition of lighting equipment, and the information which shows the operating condition of the air conditioner 42 are memorize | stored in time series. Similarly, the equipment controller 100 monitors the signals output from the power measuring units 70 to 73, and consumes power for the entire tenant, power for the lighting equipment 41, power for the air conditioning equipment 42, and power for the home appliance 43. The power is stored in time series. Along with the above operation, the facility controller 100 displays the power consumption in each facility and the operating status of the equipment constituting each facility on the display unit 104.

  The facility controller 100 can predict the future power consumption of each facility from the power consumption history when the above-described storage of the power consumption is continuously performed for a certain period. When the facility controller 100 predicts future power consumption, for example, the facility controller 100 displays a curve indicating the transition of power consumption on the display unit 104.

  FIG. 4 shows, as an example, a transition curve indicating the transition of power consumption measured by the power measurement unit 70. This transition curve shows the transition of power up to the current time t1 with a solid line, and shows the transition of power after the current time t1 with a broken line. The user can confirm the future power transition indicated by the broken line from the transition curve displayed on the display unit 104.

  FIG. 4 shows a transition curve representing the transition of the power consumption of the entire tenant. The user can display the amount of power stored in the power storage unit 20 on the display unit 104 by an operation via the input unit 105. It is possible to display the transition, the transition of power generated by the power generation unit 30, the transition of the power consumption of each of the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43, and the like. Thereby, the user can confirm the future power consumption of each electric equipment.

  By confirming the future power consumption by the user, it becomes easy for the user to operate and select the equipment and adjust the output from the equipment.

  In addition, the facility controller 100 creates a discharge plan for the power storage unit 20 from the amount of power stored in the power storage unit 20 and the future power consumption of each electrical facility. This discharge plan is a plan in which a time zone in which the power consumption reaches a peak is calculated from the prediction result of the future power consumption, and the power stored in the power storage unit 20 is discharged in the calculated time zone. Thereby, it becomes possible to avoid that the maximum value of the power consumption in each tenant exceeds the contract power.

  In addition, the equipment controller 100 creates an operation plan for the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43 based on the prediction result of the future power consumption. In this operation plan, a time zone in which the power consumption reaches a peak is calculated from the prediction result of the future power consumption, and the facilities 41 to 43 are configured so that the power consumption does not exceed the contract power in the calculated time zone. It is for controlling the output of. Control of the output of the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43 decreases the output of each equipment or each equipment in accordance with the priority given in advance for each equipment or for each equipment constituting the equipment. It is possible to make it.

In the present embodiment, the facility controllers 100 of the tenants 10 ₁ to 10 _N can communicate with each other. For this reason, the facility controllers 100 of the tenants 10 ₁ to 10 _N operate in cooperation with each other, thereby accommodating power stored in the power storage unit 20 or power generated by the power generation unit between tenants. be able to.

  Specifically, when the prediction result of the future power consumption is calculated for each tenant 10, the amount of power consumed during the tenant's business hours is calculated based on the prediction result, It is conceivable to distribute the power stored in the power storage unit 20 of each tenant 10 at a ratio proportional to the amount of power.

  As described above, in the present embodiment, the facility controller 100 calculates the time zone in which the power consumption peaks from the predicted power consumption of each facility of the tenant 10. And the electrical storage unit 20 is controlled so that the electric power stored in the electrical storage unit 20 is discharged in the calculated time zone. This makes it possible to avoid the maximum power consumption of each tenant from exceeding contract power.

In the present embodiment, the facility controllers 100 of the tenants 10 ₁ to 10 _N communicate with each other. Thereby, the electric power stored in the power storage unit 20 can be accommodated between the tenants 10 ₁ to 10 _N.

  In the present embodiment, the equipment controller 100 stores a history of power consumption of the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43 installed in the tenant 10. For this reason, the transition of the past power consumption can be displayed on the display unit 104. The facility controller 100 also predicts and displays future power consumption based on the power consumption history. For this reason, the user can easily select the equipment to be operated or determine the priority order of the equipment to be operated.

  In the present embodiment, the facility controller 100 predicts future power consumption based on the power consumption history. For this reason, the operation of the lighting equipment 41, the air conditioning equipment 42, and the home appliance equipment 43 can be realized without impairing the comfort in consideration of the prediction result and the power stored in the power storage unit 20. According to this, the peak of power consumption is reduced due to the use of the stored electric power, and it is possible to operate a device with a margin.

  When power stored in the power storage unit 20 is used, power loss occurs during livestock charging and discharging. Therefore, it is desirable to operate each facility without charging and discharging the power storage unit 20 as much as possible. Therefore, the power storage unit 20 can be efficiently operated by using the power stored in the power storage unit 20 only when the peak of power consumption in the tenant exceeds the contract power.

  Further, the facility controller 100 can control the power generation unit 30 and the power storage unit 20. For this reason, for example, only when the output from the power generation unit 30 is small or unstable, each facility can be operated stably and efficiently by causing the power storage unit 20 to perform discharge.

  In the present embodiment, the facility controllers 100 installed in the tenant 10 can communicate with each other. For this reason, when each facility controller 100 predicts future power consumption, power can be interchanged between the tenants 10. Thereby, it becomes possible to operate each equipment efficiently in the entire building or facility where the tenant 10 is located.

  In the present embodiment, each tenant's facility controller 100 calculates a time period during which power consumption peaks, and discharge by the power storage unit 20 is performed during a time period during which power consumption peaks. Thereby, the peak of power consumption becomes small, and it can avoid that the electric power used in the building and the whole facility where a tenant occupies exceeds contract electric power, for example.

  For this reason, while realizing a comfortable environment with air-conditioning equipment or the like, it is possible to keep the power rate during peak hours low. In addition, incentives from electric power companies can be expected. This incentive includes a discount on electricity charges.

  In the above embodiment, the facility controller 100 stores information indicating the operating status of each of the power storage unit 20, the power generation unit 30, the lighting facility 41, the air conditioning facility 42, and the home appliance 43. For this reason, the facility controller 100 can predict the amount of power required during the peak time period. For this reason, necessary electric power can be efficiently stored in the power storage unit 20.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment. Hereinafter, modifications of the embodiment will be described.

<< Modification 1 >>
In the above-described embodiment, the amount of power stored in the power storage unit 20 is displayed. However, the facility controller 100 determines whether the power storage unit 20 can calculate the amount of power stored in the power storage unit 20 and the future power consumption. The time that 20 can be discharged may be calculated and displayed. For example, “How many hours can the power storage unit 20 maintain the discharge when the tenant's facilities are operated in the current state” or “When the commercial power system is blacked out, the residents in the tenant It is conceivable that the operationable time of the power storage unit 20 is predicted and displayed, such as “how long can the power storage unit 20 maintain the discharge if it is concentrated at a location”.

  Specifically, the facility controller 100 holds a power generation history of the power generation unit 30, a history regarding the operating state of the facility equipment, or a history regarding power consumption of each electrical facility. For this reason, for example, the transition of power consumption can be predicted in consideration of the outside air temperature measured by the temperature sensor, weather information acquired via a network such as the Internet, and the like. The facility controller 100 predicts and displays the operation possible time of the power storage unit 20 from the prediction result, the amount of power stored in the power storage unit 20, and the generated power of the power generation unit 30.

  In addition, the facility controller 100 considers the priority given to each facility when it is necessary to operate the tenant facility beyond the operable time of the power storage unit 20 at the time of a power failure or the like. Reduce the output of the equipment or shut down the equipment. Thereby, the electric power stored in the power storage unit 20 can be used effectively. In this case, the facility controller 100 may provide the user with an optimal operation method for each facility.

<< Modification 2 >>
The facility controller 100 may present optimum operating conditions for the air conditioning equipment 42 and the lighting equipment 41 according to the amount of power stored in the power storage unit 20 and the power generation status of the power generation unit 30. Further, the equipment controller 100 may control the air conditioning equipment 42 and the lighting equipment 41 according to the optimum operating conditions of the air conditioning equipment 42 and the lighting equipment 41.

  Specifically, the equipment controller 100 may provide an operating condition in which economy is more important than comfort in consideration of the amount of power stored in the power storage unit 20 and the power generation status of the power generation unit 30. . Since comfort and economy are in a trade-off relationship, the equipment can be operated in accordance with the user's intention by presenting the above operating conditions. In an emergency such as a power failure, an operating condition that considers urgency may be presented.

  As described above, by providing operation conditions according to various situations, the user can easily operate the equipment according to the situations.

<< Modification 3 >>
In the said embodiment, the case where the electric power generation unit 30 which produces electric power using sunlight was installed in the tenant 10 was demonstrated. Not limited to this, a power generation unit using wind power or the like may be installed. In this case, since the output from the power generation unit 30 may become unstable, the facility controller 100 controls the output from the power storage unit 20 so as to compensate for fluctuations in the output from the power generation unit 30. It is good. Thereby, it becomes possible to supply electric power stably to a tenant's equipment.

  Further, the facility controller 100 may store necessary power in the power storage unit 20 at night in consideration of a prediction result of the power generation amount of the power generation unit 30 and a weather forecast. The facility controller 100 discharges so that the peak of power consumption is low based on the prediction result of the power generation amount of the power generation unit 30 and the operation history of each facility of the tenant, thereby improving comfort and economy. Both can be achieved.

  In the above embodiment, the case where the equipment controller 100 is a computer has been described. The equipment controller 100 is not limited to this, and the hardware such as the integrated control unit 100a, the power management control unit 100b, and the equipment control unit 100c that share and execute the processing executed by the CPU 101 as shown in FIG. It may be comprised including.

  The power management control unit 100b is connected to the power storage unit 20, the power generation unit 30, and the power measurement units 70 to 73. Then, information such as the amount of power stored in the power storage unit 20, power generated by the power generation unit 30, power consumption in each electrical facility is acquired and output to the auxiliary storage unit 103 and the integrated control unit 100 a. .

  The equipment control unit 100 c is connected to the control device 23 of the power storage unit 20, the control device 33 of the power generation unit 30, the remote control 51 a of the lighting equipment 41, and the remote control 52 a of the air conditioning equipment 42. And control of each installation is performed based on the instruction | indication from the integrated control part 100a. In addition, information indicating the operation status of each facility is output to the auxiliary storage unit 103.

  Based on the information output from the power management control unit 100b, the history of each information stored in the auxiliary storage unit 103, and the instruction from the user input via the input unit 105, the integrated control unit 100a Various commands are output to the control unit 100c. Thereby, control of each facility of the tenant 10 is realized. Further, the integrated control unit 100a displays the history stored in the auxiliary storage unit 103, the prediction result of the future power consumption, and the like on the display unit 104 as necessary.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The power supply switching device of the present invention is suitable for switching between a commercial power supply and a power supply installed in a home. Moreover, the switchboard of this invention is suitable for distribution of the electric power to a load.

DESCRIPTION OF SYMBOLS 10 Tenant 20 Power storage unit 21 Inverter 22 Battery 23 Control device 30 Power generation unit 31 Inverter 32 Solar panel 33 Control device 41 Lighting equipment 42 Air conditioning equipment 43 Home appliance 51 Lighting equipment 51a Remote control 52 Air conditioning unit 52a Remote control 70-73 Power measurement unit 100 Equipment controller 100a Integrated control part 100b Power management control part 100c Equipment control part 101 CPU
102 Main storage unit 103 Auxiliary storage unit 104 Display unit 105 Input unit 106 Interface unit 107 System bus

Claims (10)

Display means for displaying the power consumed by each of the plurality of electrical facilities connected to the commercial power system and the power supplied to the electrical facilities from the power facility linked to the commercial power system;
Control means for controlling the electrical equipment and the power equipment;
Equipment controller with. The power equipment is
A power generation unit for generating electric power;
Power storage means for storing the power generated by the power generation unit;
With
The facility controller according to claim 1, wherein the display unit displays a charge state and a discharge state of the power storage unit. The power generation unit is a solar cell panel,
The facility controller according to claim 2, wherein the display unit displays a power generation state of the solar cell panel.   The equipment controller according to claim 2 or 3, wherein the control means controls charging and discharging of the power storage means.   The equipment controller according to any one of claims 2 to 4, wherein the control means controls the power generation unit. When the commercial power system is blacked out, it includes processing means for determining an optimal operation method of the electrical equipment according to the amount of power stored in the power storage means and the demand for the electrical equipment,
The equipment controller according to claim 2, wherein the display unit displays the operation method.   The equipment controller according to claim 1, wherein the electrical equipment is an air conditioner. Storage means for storing a history of power consumption of the equipment,
The control means predicts power consumption by the electrical facility on the next day based on the history, and controls power stored in the power storage means from the commercial power system at night based on the predicted result. The equipment controller according to any one of 2 to 7. The storage means stores a history of power generated by the power generation unit,
The control means predicts power generated by the power generation unit on the next day based on the history, and controls power stored in the power supply means from the commercial power system at night based on the predicted result. The equipment controller according to 8. A power facility linked to the commercial power system and supplying power to the electrical facility;
The equipment controller according to any one of claims 1 to 9,
A distributed power supply system comprising:

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