JP6443910B2 - Apparatus and method for estimating power consumption - Google Patents

Description

  The present invention estimates the amount of power used in a building by use by obtaining information on the amount of power used by the entire building and the total floor area by use in the building for buildings used in communications and other industries. The present invention relates to an apparatus and a method.

  From the perspective of reducing energy costs and mitigating climate change associated with carbon dioxide emissions, reducing the amount of electricity used by companies is an urgent issue. For buildings with clear uses, such as factories, it is easy to take reduction measures because the use of power is clear. On the other hand, in buildings where both business use and office use are mixed, such as communication buildings, only the amount of power used for the entire building can be grasped. Hateful.

  Therefore, by placing sensors on distribution lines or distribution boards when the purpose is to take measures to reduce the amount of power used in buildings such as telecommunication buildings where business uses and office uses are mixed. A method for grasping the amount of power used has been proposed (Patent Document 1).

JP2013-161155A

  However, in the method disclosed in Patent Document 1, the amount of electric power used for each use in the building is grasped by arranging the sensor on the distribution line or the distribution board. In addition, there is a problem that the maintenance work of the sensor takes cost and time.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a power consumption estimation apparatus and method capable of grasping the power consumption for each application at low cost and in a short time. .

The estimation apparatus for the amount of used electric power according to the present invention includes a used electric energy input means for acquiring information on the total used electric energy of a building to be analyzed, and the total floor space relating to the internal space as the internal space information of the building. A space information input means for each use for acquiring an area, a skin area, a heat insulation parameter indicating a heat insulation efficiency, and a reference temperature for each use, and the power consumption per unit area for each equipment as the equipment information of the building Equipment capacity, operating time during analysis period, operating rate during analysis period, converted calorific value, lighting capacity indicating power consumption per unit area for lighting equipment, and lighting time during analysis period And facility equipment information input means for acquiring the coefficient of performance indicating the energy consumption efficiency of the air conditioning equipment for each space, and outside air temperature information input means for acquiring information on the outside temperature From said spatial information and the equipment information and information of the outside air temperature, and an electric power consumption calculating means for calculating the amount of electric power used for each application using a predetermined correlation formula, prior Symbol power usage calculation means, The total floor area of the space used for the calculation object application is S [m ² ], the outer skin area of the space used for the calculation object application is Scr [m ² ], and the space used for the calculation object application Β [m ² · ° C.], the reference temperature of the space used for the calculation target is Tref [° C.], the predetermined temperature coefficient is α [kWh / m ² ], the calculation target use The capacity of the equipment per unit area of the space used is Pc [kW / m ² ], the operating time during the analysis target period of the equipment of the space used for the calculation target is calculated t Analysis period of equipment in the space used for the target application The operating ratio R in, the heating equivalence of the equipment of space used for the calculation object applications H [kWh / m ^2], the per unit area of the space used for the calculation target applications The lighting capacity is Pi [kW / m ² ], the lighting time during the analysis target period of the lighting device in the space used for the calculation target application is ti [h], and the air conditioning device in the space used for the calculation target application When the coefficient of performance indicating the energy consumption efficiency of COP is COP and the outside air temperature during the analysis target period is Ta [° C.], the power consumption P [kWh] used for the calculation target is given by a predetermined correlation formula P = [ (Pc × t × R) + (H / COP) + {Scr × (Ta−Tref) × α} / {β × COP} + (Pi × ti)] × S Is.
Further, in one configuration example of the power consumption estimation device according to the present invention, the power consumption calculation means subtracts the sum of the power consumption by application from the total power consumption, thereby calculating the correlation equation. It is characterized in that the amount of electric power used is calculated for applications where is not set.

Further, the present invention is a method in which an estimation device including a power consumption input means, a spatial information input means for each use, facility equipment information input means, an outside air temperature information input means, and a power consumption calculation means estimates the power consumption. The power consumption input means obtains information on the power consumption of the entire building to be analyzed, and the space information input means for each usage uses the spatial information inside the building. As for the internal space, the space information input step for each use for acquiring the total floor area, the outer skin area, the heat insulation parameter indicating the heat insulation efficiency, and the reference temperature for each use, and the equipment information input means are the facilities of the building. As equipment information, the equipment capacity indicating the power consumption per unit area for each equipment, the operating time during the analysis target period, the operation rate during the analysis target period, and the heat generation And an equipment information input step for acquiring, for each lighting space, lighting capacity indicating power consumption per unit area, lighting time during the analysis target period, and coefficient of performance indicating energy consumption efficiency of the air conditioning equipment, respectively. The outside air temperature information input means acquires outside air temperature information, and the power consumption calculation means uses a predetermined amount from the space information, the equipment information, and the outside temperature information. look including the power usage calculation step of calculating the application by the power usage by using the correlation equation, the electric power consumption calculating step, the floor space of the space used for the calculation object application S [m ² ], the skin area of the space used for the calculation object application Scr [m ^2], the adiabatic parameter space that is used to calculate the target application β [m ² · ℃], use to be calculated To the reference temperature Tref of space used [° C.], a predetermined temperature coefficient α [kWh / m ^2], the equipment capacity Pc [kW per unit area of the space used for the calculation target applications / M ² ], t [h] during the analysis target period of the space equipment used in the calculation target application, t [h], during the analysis target period of the space equipment used in the calculation target application The operating rate is R, the calorific value converted value of the facility equipment in the space used for the calculation target application is H [kWh / m ² ], and the illumination capacity per unit area of the space used for the calculation target application Pi [kW / m ² ], the lighting time during the analysis target period of the lighting equipment in the space used for the calculation target application ti [h], the energy of the air conditioning equipment in the space used for the calculation target application The COP that shows the consumption efficiency When the outside air temperature during the elephant period is Ta [° C.], the power consumption calculating means calculates the power consumption P [kWh] for the intended use as a predetermined correlation equation P = [(Pc × t × R) + (H / COP) + {Scr × (Ta−Tref) × α} / {β × COP} + (Pi × ti)] × S. is there.

  According to the present invention, when analyzing the amount of power used for each use (business) in a building intended for power saving, information on the total power consumption of the building to be analyzed and the inside of the building By acquiring the spatial information, it is possible to calculate the amount of power used for each application in the building according to a predetermined correlation formula, so there is no need for a sensor that measures the amount of power used for each application in the building. Therefore, it is possible to grasp the amount of power used for each application at low cost and in a short time even if it is not a power management expert. As a result, it is possible to provide a user of the estimation device with a guideline for power saving of the building to be analyzed.

It is a block diagram which shows the structure of the estimation apparatus of the used electric energy which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the estimation apparatus of the used electric energy which concerns on embodiment of this invention.

[Principle of the Invention]
In order to achieve the above-described object, the power consumption estimation apparatus of the present invention uses the power of the entire building to support the planning of a measure that is considered to reduce the power consumption of the building intended to save power. The amount of electric power used is estimated for each use in the target building by acquiring information on the amount and the total floor area by use in the building.

Next, a method for calculating the amount of power used for each application in the building will be described. Let Pn be the amount of power used for use n in the building, and Sn be the total floor area of the space used for use n in the building. Since it is known that there is a correlation between the area of the building and the amount of power used by the survey of single-use buildings, the estimated value Pn of the amount of power used for usage n in the building can be expressed by the following equation: .
Pn = F (Sn) (1)

The total floor area Sn is available information. A specific example of the correlation formula F between the total floor area Sn and the power consumption Pn will be described later. From Formula (1), the estimated value Pall of the power consumption of the entire building can be expressed by the following formula.
Pall = ΣF (Sn)
= F (P1) + F (P2) +... + F (Pn) (2)

Assuming that the actual measurement value of the power consumption of the entire building is P, the estimated value Px of the power consumption for applications whose general correlation equation is unknown can be calculated by the following equation.
Px = P−ΣF (Sn) (3)

  The actual measurement value P of the power consumption of the entire building is available information. In this way, the estimated power consumption Pn can be calculated for each use in the building, and for the usage power Px for the usage whose correlation equation is unknown, the power usage is determined from the actual measured power consumption P of the entire building. It can be calculated by subtracting the sum of the estimated value Pn of the quantity.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited by this description. FIG. 1 is a block diagram showing a configuration of a power consumption estimation apparatus according to an embodiment of the present invention. The power consumption estimation device includes a power consumption input unit 1 that acquires information on the total power consumption of a building to be analyzed, and a spatial information input unit 2 by use that acquires spatial information inside the building by use. And an equipment information input section 3 that acquires equipment information of the building, an outside air temperature information input section 4 that acquires information on the outside air temperature, and a power consumption calculation section 5 that calculates the amount of power used in the building for each application. And a power consumption output unit 6 that outputs information on the power consumption calculated by the power consumption calculation unit 5 to the outside.

  Hereinafter, the operation of the estimation apparatus of the present embodiment will be described with reference to FIG. First, the used electric energy input unit 1 acquires information on the used electric energy P [kWh] in the analysis target period of the entire building to be analyzed (step S1 in FIG. 2). Information on the power consumption P [kWh] of the entire building can be obtained from a sensor (not shown) provided in the building to be analyzed, or input by the user of the estimation device by operating the estimation device. It is also possible to obtain a value.

The use-specific space information input unit 2 acquires the use-specific space information in the building to be analyzed (step S2 in FIG. 2). As the space information for each use in the building, the total floor area S [m ² ] of the space, the outer skin area Scr [m ² ], the predetermined temperature coefficient α [kWh / m ² ], and the thermal insulation efficiency of the space are shown. There is an adiabatic parameter β [m ² · ° C.] and a space reference temperature Tref [° C.]. With respect to these spatial information, values preset in the application-specific spatial information input unit 2 can be acquired, and values input by the user by operating the estimation device can also be acquired. The application-specific spatial information input unit 2 acquires the spatial information for each application.

The equipment information input unit 3 acquires equipment information in the building to be analyzed (step S3 in FIG. 2). As equipment information in the building, OA equipment capacity Pcoa [kW / m ² ] indicating the power consumption of OA (Office Automation) equipment per unit area by space, and operation of OA equipment by space during the analysis target period The time toa [h], the operating rate Roa during the analysis target period of the OA equipment by space, the heat generation amount conversion value Hoa [kWh / m ² ] of the OA equipment by space, and the energy consumption efficiency of the air conditioning equipment by space Period COP (Coefficient Of Performance), which is a coefficient of performance, lighting capacity Pi [kW / m ² ] indicating the power consumption of the lighting device per unit area by space, lighting time ti during the analysis target period of the lighting device by space [H], communication equipment capacity Pco [kW / m ² ] indicating the power consumption of the communication equipment per unit area by space, operating time tco [h] during the analysis target period of the communication equipment by space, Analysis of communication equipment There are an operation rate Rco during the target period, and a calorific value converted value Hco [kWh / m ² ] of communication equipment by space.

  The equipment / equipment information input unit 3 may obtain equipment / equipment information from a management system (not shown) that manages the equipment / equipment in the building, or obtains a value preset in the equipment / equipment information input unit 3. Alternatively, a value input by the user operating the estimation device may be acquired.

  The outside air temperature information input unit 4 acquires information on the outside air temperature Ta [° C.] during the analysis target period (step S4 in FIG. 2). The outside air temperature information input unit 4 may obtain information on the outside air temperature Ta [° C.] from a temperature sensor (not shown) provided in the building or from an external weather forecast system (not shown). Also good.

Next, the power consumption calculation unit 5 calculates the power consumption in the building to be analyzed for each application (step S5 in FIG. 2).
First, the power consumption calculation unit 5 uses the correlation formula between the total floor area S1 [m ² ] of the space used for office use and the power use P1 [kWh] for office use for the power consumption in the analysis target period. The quantity estimated value P1 [kWh] is calculated. Specifically, the power consumption calculation unit 5 includes the total floor area S1 [m ² ] of the space used for office use, the outer skin area Scr1 [m ² ] of the space used for office use, and the temperature coefficient. α [kWh / m ² ], heat insulation parameter β1 [m ² · ° C.] of space used for office use, reference temperature Tref 1 [° C.] of space used for office use, and used for office use OA equipment capacity Pcoa1 [kW / m ² ] per unit area of space, operating time toa1 [h] during analysis target period of OA equipment used for office use, and space used for office use The operating rate Roa1 during the analysis period of the OA equipment, the heat generation conversion value Hoa1 [kWh / m ² ] of the OA equipment in the space used for office use, and the energy consumption of the air conditioning equipment in the space used for office use COP1 showing efficiency and office use And lighting capacity per unit area of the space used Pi1 [kW / m ^2], and lighting time during the analysis period of the lighting apparatus of space used for office applications ti1 [h], the outside air during the analysis period From the temperature Ta [° C.], the estimated value P1 [kWh] of the electric energy used for office use in the building is calculated by the following equation.
P1 = [(Pcoa1 × toa1 × Roa1)
+ (Hoa1 / COP1)
+ {Scr1 × (Ta−Tref1) × α} / {β1 × COP1}
+ (Pi1 × ti1)] × S1 (4)

  The first term in [] in equation (4) indicates the power consumption required for the operation of the OA equipment, and the second term indicates the power consumption of the air conditioning equipment required to absorb the heat generated by the OA equipment. The third term indicates the power consumption of the air-conditioning equipment necessary to keep the space used for office use at the reference temperature Tref1, and the fourth term indicates the power consumption required for lighting the lighting.

Next, the power consumption calculation unit 5 uses the analysis target period using a correlation formula between the total floor area S2 [m ² ] of the space used for communication and the power consumption P2 [kWh] for communication. The estimated value P2 [kWh] of the electric energy is calculated. Specifically, the power consumption calculation unit 5 includes a total floor area S2 [m ² ] of a space used for communication purposes, a skin area Scr2 [m ² ] of a space used for communication purposes, and a temperature coefficient. α [kWh / m ² ], space insulation parameter β2 [m ² · ° C.] used for communication, space reference temperature Tref 2 [° C.] used for communication, and used for communication The communication equipment capacity Pco2 [kW / m ² ] per unit area of the space, the operating time tco2 [h] during the analysis target period of the communication equipment of the space used for the communication use, and the space used for the communication use The operating rate Rco2 during the analysis period of the communication equipment, the calorific value converted value Hco2 [kWh / m ² ] of the communication equipment in the space used for communication, and the energy consumption of the air conditioning equipment in the space used for communication COP2 which shows efficiency, and analysis period Since the outside air temperature Ta [° C.] in, estimates of the amount of power used for communication purposes in the building P2 the [kWh] calculated by the following equation.
P2 = [(Pco2 × tco2 × Rco2)
+ (Hco2 / COP2)
+ {Scr2 × (Ta−Tref2) × α} / {β2 × COP2}] × S2
... (5)

  The first term in [] in equation (5) indicates the power consumption required for the operation of the communication equipment, and the second term indicates the power consumption of the air conditioning equipment required to absorb the heat generated by the communication equipment. The 3rd term has shown the power consumption of the air-conditioning equipment required in order to keep the space used for a communication use at the reference temperature Tref2.

  Note that the correlation formulas of the formulas (4) and (5) are derived and set in advance from the survey of the building to be analyzed or the survey of the standard building. Further, since the electric power consumptions P1 and P2 are calculated for the analysis target period (for example, 1 hour unit, 1 day unit, 1 month unit), the outside air temperature Ta changes during the analysis target period. Therefore, for example, when calculating the power consumption P1 in units of one day, the power consumption P1 in units of one hour is calculated according to the time according to the equation (4) using the information of the outside air temperature Ta for each time of the day, The calculated power consumption P1 for each hour may be integrated to obtain the power consumption P1 for each day. Similarly, when calculating the power consumption P2 in units of one day, the power consumption P2 in units of one hour is calculated according to the time according to the equation (5) using the information of the outside air temperature Ta for each time of the day, What is necessary is just to obtain | require the electric power consumption P2 of the daily unit by integrating | accumulating the electric power consumption P2 of the calculated each time. The same applies to the case where the electric power consumption P1 and P2 for each month is obtained.

Subsequently, the power consumption calculation unit 5 calculates an estimated value Pall [kWh] of the power consumption of the entire building to be analyzed by the following equation.
Pall = P1 + P2 (6)

Finally, the power consumption calculation unit 5 uses the estimated value Pall [kWh] of the power consumption of the entire building and the power consumption P [kWh] of the entire building acquired by the power consumption input unit 1 From the following equation, an estimated value Px [kWh] of the amount of power used in the analysis target period of the application whose correlation equation is unknown is calculated by the following equation.
Px = P-Pall (7)
In addition, examples of applications for which the correlation formula is unknown include, for example, rooms that are used for multiple purposes, rooms that have been used for a different period, rooms that are divided into multiple uses in the room, etc. Is mentioned. In this way, the power consumption calculation unit 5 can calculate the power consumption in the building for each application.

  Next, the power consumption output unit 6 outputs the value of the power consumption for each application calculated by the power consumption calculation unit 5 to the outside (step S6 in FIG. 2). As an output method, for example, a method of displaying a value of power consumption on a monitor display and presenting it to the user, a method of printing a value of power consumption using a printer and presenting it to the user, and information on the power consumption There is a method to send to the outside.

  As described above, in the present embodiment, when analyzing the power consumption for each use (business) in the building for the building intended to save power, the power consumption P of the entire building and the usage in the building are analyzed. By acquiring information related to the separate floor area S, the amount of power used can be calculated for each use in the building according to a predetermined correlation formula. Therefore, it is possible to grasp the amount of electric power used for each application at low cost and in a short time even if it is not a power management specialist. As a result, it is possible to provide a user of the estimation device with a guideline for power saving of the building to be analyzed.

  The power consumption estimation device described in the present embodiment can be realized by a computer having a CPU (Central Processing Unit), a storage device, and an interface, and a program for controlling these hardware resources. The CPU executes the processing described in the present embodiment in accordance with a program stored in the storage device.

  The present invention can be applied to a technique for estimating the amount of power used.

  DESCRIPTION OF SYMBOLS 1 ... Used electric energy input part, 2 ... Spatial information input part according to use, 3 ... Equipment information input part, 4 ... Outside temperature information input part, 5 ... Used electric energy calculation part, 6 ... Used electric energy output part.

Claims (4)

A power consumption input means for obtaining information on the power consumption of the entire building to be analyzed;
As the spatial information inside the building, the space information input means for each use for acquiring the total floor area, the outer skin area, the heat insulation parameter indicating the heat insulation efficiency, and the reference temperature for each internal space,
As the facility equipment information of the building, the facility equipment capacity indicating the power consumption per unit area, the operation time during the analysis target period, the operation rate during the analysis target period, the calorific value conversion value, and the lighting equipment regarding each equipment device The facility capacity information input means for acquiring the lighting capacity indicating the power consumption per unit area, the lighting time during the analysis target period, and the coefficient of performance indicating the energy consumption efficiency of the air conditioner, for each space;
Outside temperature information input means for acquiring outside temperature information;
Using the space information, the equipment information and the information on the outside air temperature, a power consumption calculation means for calculating the power consumption for each application using a predetermined correlation equation ,
The power consumption calculating means calculates the total floor area of the space used for the calculation target application by S [m ² ], the outer skin area of the space used for the calculation target application by Scr [m ² ], and calculates The heat insulation parameter of the space used for the target application is β [m ² · ° C.], the reference temperature of the space used for the calculation target application is Tref [° C.], and the predetermined temperature coefficient is α [kWh / m]. ² ], the capacity of the equipment per unit area of the space used for the calculation target application is Pc [kW / m ² ], and the operation during the analysis target period of the equipment of the space used for the calculation target The time is t [h], the operating rate during the analysis target period of the space equipment used for the calculation target application is R, and the calorific value converted value of the space equipment used for the calculation target is H [kWh / m ^2], a single space that is used to calculate the target application The lighting capacity per area Pi [kW / m ^2], the lighting time during the analysis period of the lighting apparatus of space used for the calculation object application ti [h], is used to the calculation target applications When the coefficient of performance indicating the energy consumption efficiency of the air conditioner in the space is COP and the outside air temperature during the analysis target period is Ta [° C.], the power consumption P [kWh] used for the calculation target is a predetermined correlation Calculate using the formula P = [(Pc × t × R) + (H / COP) + {Scr × (Ta−Tref) × α} / {β × COP} + (Pi × ti)] × S. A device for estimating the amount of power used. In the estimation apparatus of the electric energy used of Claim 1 ,
The power consumption calculation means calculates the power consumption of an application for which the correlation formula is not set by subtracting the sum of the power consumption for each application from the total power consumption. A device for estimating the amount of power used. A method of estimating the amount of power used by an estimation device comprising a power consumption input means, space information input means for each application, equipment information input means, outside air temperature information input means, and power consumption calculation means,
The used electric energy input means obtains information on the used electric energy of the entire building to be analyzed, and used electric energy input step;
The use-specific space information input means acquires the total floor area, the outer skin area, the heat insulation parameter indicating the heat insulation efficiency, and the reference temperature related to the internal space, as the space information inside the building, for each use. An input step;
The facility equipment information input means, as the facility equipment information of the building, for each facility equipment, equipment equipment capacity indicating power consumption per unit area, operation time during the analysis target period, operation rate during the analysis target period, and Facility equipment that obtains a calorific value conversion value, lighting capacity that indicates power consumption per unit area for lighting equipment, lighting time during the analysis target period, and coefficient of performance that indicates energy consumption efficiency of the air conditioning equipment for each space An information input step;
The outside air temperature information input means for obtaining outside air temperature information; and
The electric power consumption calculating means, from said spatial information and the equipment information and the outside air temperature information, see contains a power usage calculation step of calculating the amount of electric power used for each application using a predetermined correlation formula,
The power consumption calculation step calculates the total floor area of the space used for the calculation target application by S [m ² ], the outer skin area of the space used for the calculation target application by Scr [m ² ], and calculates The heat insulation parameter of the space used for the target application is β [m ² · ° C.], the reference temperature of the space used for the calculation target application is Tref [° C.], and the predetermined temperature coefficient is α [kWh / m]. ² ], the capacity of the equipment per unit area of the space used for the calculation target application is Pc [kW / m ² ], and the operation during the analysis target period of the equipment of the space used for the calculation target The time is t [h], the operating rate during the analysis target period of the space equipment used for the calculation target application is R, and the calorific value converted value of the space equipment used for the calculation target is H [kWh / m ^2], the space used for the calculation target applications The lighting capacity Pi [kW / m ^2] per unit area, the lighting time during the analysis period of the lighting apparatus of space used for the calculation object application ti [h], is used to the calculation target applications When the coefficient of performance indicating the energy consumption efficiency of the air-conditioning equipment in the space is COP and the outside air temperature during the analysis target period is Ta [° C.], the power consumption calculation means uses the power consumption for the calculation target application P [kWh] is converted into a predetermined correlation formula P = [(Pc × t × R) + (H / COP) + {Scr × (Ta−Tref) × α} / {β × COP} + (Pi × ti). ] The calculation method of used electric energy characterized by including the step calculated using * S. In the estimation method of the electric energy used of Claim 3 ,
In the used power amount calculating step, the used power amount calculating means subtracts the sum of the used power amount for each use from the total used power amount, so that the used power for the use in which the correlation formula is not set. A method for estimating the amount of power used, comprising the step of calculating the amount.

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