JP4130134B2 - Device for calculating power consumption per unit time for each operation mode of equipment in facility and device for calculating power consumption of equipment in facility - Google Patents

Description

【００２４】
表１において、各記号の意味は、次の通りである。
【００２５】
ｘ_Ni：ｉで特定される所定時間単位（３０分）中にショーケース群２１の運転モードが冷却モード（Ｎ）であった時間
ｘ_Di：ｉで特定される所定時間単位（３０分）中にショーケース群２１の運転モードが霜取りモード（Ｄ）であった時間
ｘ_Li：ｉで特定される所定時間単位（３０分）中に空調機１２の運転モードが弱風モード（Ｌ）であった時間
ｘ_Mi：ｉで特定される所定時間単位（３０分）中に空調機１２の運転モードが中風モード（Ｍ）であった時間
ｘ_Hi：ｉで特定される所定時間単位（３０分）中に空調機１２の運転モードが強風モード（Ｈ）であった時間
ｙ_i ：ｉで特定される所定時間単位（３０分）中のトータル測定電力量
【００２６】
（２）ショーケース群２１および空調機（室内機）１２およびそれぞれの各運転モード毎の１分間当たりの消費電力量を未知数Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H とする。
【００２７】
Ｗ_N ：ショーケース群２１が冷却モード（Ｎ）で運転されている場合の１分間当たりの消費電力量
Ｗ_D ：ショーケース群２１が霜取りモード（Ｄ）で運転されている場合の１分間当たりの消費電力量
Ｗ_L ：空調機（室内機）１２が弱風モード（Ｌ）で運転されている場合の１分間当たりの消費電力量
Ｗ_M ：空調機（室内機）１２が中風モード（Ｍ）で運転されている場合の１分間当たりの消費電力量
Ｗ_H ：空調機（室内機）１２が強風モード（Ｈ）で運転されている場合の１分間当たりの消費電力量
【００２８】
ショーケース群２１および空調機（室内機）１２それぞれの各運転モード毎の１分間当たりの消費電力量を未知数Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H とすると、次式（１）の関係式が成り立つ。
【００２９】
【数１】

【００３０】
各所定時間単位毎に得られたデータ（表１参照）毎に、上記式（１）の関係式が得られるので、得られた複数の関係式をもとにして、未知数Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H を行列演算（重回帰分析）によって求める。
【００３１】
つまり、次式（２）の関係式が成り立つ。
【００３２】
【数２】

【００３３】
上記式（２）において、各記号の意味は、次の通りである。
【００３４】
Ｓ² ｘ_N ：ｘ_N の分散
Ｓ² ｘ_D ：ｘ_D の分散
Ｓ² ｘ_L ：ｘ_L の分散
Ｓ² ｘ_M ：ｘ_M の分散
Ｓ² ｘ_H ：ｘ_H の分散
Ｓａｂ ：ａとｂとの共分散（例えば、Ｓｘ_N ｘ_D は、ｘ_N とｘ_D との共分散）
【００３５】
したがって、次式（３）に基づいて、未知数Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H を求めることができる。
【００３６】
【数３】

【００３７】
以下、具体例について説明する。
【００３８】
表２は、所定時間単位毎に得られた、空調機（室内機）１２およびショーケース群２１の各運転モード別の運転時間と、トータル測定電力量の具体例を示している。
【００３９】
【表２】

【００４０】
ショーケース群２１および空調機（室内機）１２それぞれの各運転モード毎の１分間当たりの消費電力量をＷ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H とすると、上記式（２）に基づいて、表２から次式（４）の関係式が成り立つ。
【００４１】
【数４】

【００４２】
また、上記式（３）に基づいて、Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H は、次式（５）式で表される。
【００４３】
【数５】

【００４４】
上記式（５）を解くと、Ｗ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H は、次のようになる。
Ｗ_N ＝４．９３７３７≒４．９
Ｗ_D ＝１２．０３１３１≒１２．０
Ｗ_L ＝１０．０１３５６≒１０．０
Ｗ_M ＝１４．８２６３１≒１４．８
Ｗ_H ＝２０．０９１３４≒２０．１
【００４５】
得られたＷ_N 、Ｗ_D 、Ｗ_L 、Ｗ_M 、Ｗ_H と、ショーケース群２１および空調機（室内機）１２それぞれの上記各所定時間単位の各運転モード毎の動作時間との積算から各運転モード毎の推定消費電力量を求めると、表３のようになる。
【００４６】
【表３】

【００４７】
表３から、ショーケース群２１および空調機（室内機）１２それぞれの上記各所定時間単位の推定消費電力量を、各運転モード毎の推定消費電力量の和算により求める。
【００４８】
【発明の効果】
この発明によれば、簡易な方法で施設内の各機器の電力使用量を推定することができるようになる施設内機器の各運転モード毎の単位時間当たりの消費電力量算出装置および施設内機器の消費電力量算出装置が実現する。
【図面の簡単な説明】
【図１】施設内電気機器システムの構成を示すブロック図である。
【図２】各機器の運転モードの種類を説明するための説明図である。
【図３】各機器（機器群）の各運転モード毎の１分間当たりの消費電力量を算出する方法を説明するために想定した施設内電気機器システムの構成を示すブロック図である。
【図４】各機器（機器群）の所定時間（３０分）毎の電力消費量の算出方法を示すフローチャートである。
【符号の説明】
１１ 空調機（室外機）
１２〜１３ 空調機（室内機）
２１、２２ ショーケース群
２３ 冷凍機
１００ 分電盤
２００ 施設内統合コントローラ[0001]
BACKGROUND OF THE INVENTION
This invention relates to power consumption calculation device power consumption calculation device and facility equipment per unit time of each operation mode of the facility in the device.
[0002]
[Prior art]
When power management for the purpose of energy saving is performed in stores such as supermarkets and coin laundry facilities, it is necessary to individually measure the power consumption of many devices with large power consumption installed in them. .
[0003]
However, due to the ease of measurement and the small amount of power used by a single device, it is common to measure the overall power on the switchboard or to measure the power by system. .
[0004]
[Problems to be solved by the invention]
[0005]
The present invention provides an apparatus for calculating power consumption per unit time for each operation mode of equipment in a facility and the consumption of equipment in the facility, so that the power consumption of each equipment in the facility can be estimated by a simple method. An object of the present invention is to provide an electric energy calculation device .
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, in the power consumption calculation device per unit time for each operation mode of the equipment in the facility, the total power consumption of each device in a predetermined time unit is measured for each predetermined time unit. first means, at every predetermined time unit, for each device, the calculation of the second means, and measurement results by a plurality of times of the first means and second means for calculating the operating mode-specific operating time in the predetermined time in the unit Based on the results, there is provided a third means for obtaining a power consumption per unit time for each device by operation mode using a matrix operation.
[0007]
According to a second aspect of the present invention, in the power consumption calculation device for equipment in a facility, a first means for measuring a total sum of power consumption of each device in a predetermined time unit for each predetermined time unit, for each predetermined time unit , For each device , based on the second means for calculating the operation time for each operation mode within the predetermined time unit, and the measurement results of the first means for a plurality of times and the calculation results of the second means, The third means for obtaining the power consumption per unit time for each operation mode using a matrix operation, the power consumption per unit time for each operation mode obtained by the third means, A fourth means for calculating the power consumption amount within the predetermined time unit for each device based on the calculation results of the two means is provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
FIG. 1 shows an in-facility electrical device system provided in a store such as a supermarket or a facility such as a coin laundry.
[0010]
The electric power from the distribution board 100 is distributed to a plurality of systems A and B. In this example, an air conditioner (outdoor unit) 11 and three air conditioners (indoor units) 12, 13, and 14 are connected to the system A. A first showcase group 21, a second showcase group 22, and a refrigerator 23 are connected to the system B. The refrigerator 23 has two compressors (C1, C2).
[0011]
As shown in FIG. 2A, the operation mode of the air conditioner (outdoor unit) 11 includes a stop mode (OFF), a cooling low capacity mode, a cooling medium capacity mode, a cooling high capacity mode, and a low heating mode. There are capacity mode, medium capacity mode of heating and high capacity mode of heating.
[0012]
As shown in FIG. 2B, the operation modes of the air conditioners (indoor units) 12, 13, and 14 include a stop mode (OFF), a low wind mode, a medium wind mode, and a strong wind mode.
[0013]
As shown in FIG. 2C, the operation modes of the showcases included in the first showcase group 21 and the second showcase group 22 include a normal mode and a defrosting mode. Defrosting is performed in a time-sharing manner for each showcase group 21, 22. For example, when defrosting is started from 13:00 on the showcases in the first showcase group 21, the first showcase group until the internal temperature reaches the upper limit or the maximum defrost time has elapsed. 21 defrosting is carried out.
[0014]
As shown in FIG. 2D, the operation mode of the refrigerator 23 includes a stop mode (OFF), a C1 operation mode in which only the first compressor C1 is operating, and only a second compressor C2 in operation. There are C2 operating modes and C1, C2 operating modes in which both compressors C1, C2 are operating.
[0015]
Information on the operation mode (operation state) of each device is collected at a short sampling interval by the in-facility integrated controller 200 connected to a controller (not shown) provided in each device. Further, the in-facility integrated controller 200 measures and collects the total power consumption of each system from the distribution board 100 every predetermined time unit (30 minutes).
[0016]
By the way, if the power consumption amount of each device (device group) per predetermined time unit (30 minutes) is known, the power consumption amount per minute (per unit time) for each operation mode of each device (device group) is known. It becomes possible to calculate based on information regarding the operation mode of each device (device group) within a predetermined time unit (30 minutes).
[0017]
In this embodiment, as shown in FIG. 4, the in-facility integrated controller 100 includes the total power consumption of each system obtained from the distribution board 200 every predetermined time unit (30 minutes) and each predetermined time unit. Based on the information about the operation mode of each device (device group) collected within a predetermined time unit collected in step 1, the power consumption in units of 1 minute for each operation mode of each device (device group) is matrix-calculated (Multiple regression analysis) is used for calculation (step 1 in FIG. 4). Then, based on the obtained power consumption per minute for each operation mode of each device (device group) and information on the operation mode of each device (device group), the predetermined of each device (device group) is determined. The power consumption for each time unit (30 minutes) is calculated (step 2 in FIG. 4).
[0018]
Hereinafter, a method for calculating the power consumption per minute for each operation mode of each device (device group) will be described.
[0019]
Here, for convenience of explanation, as shown in FIG. 3, it is assumed that only the air conditioner (indoor unit) 12 is connected to the system A and only the showcase group 21 is connected to the system B.
[0020]
(1) For the air conditioner (indoor unit) 12 and the showcase group 21, for each air conditioner (indoor unit) 12 and the showcase group 21, based on information about each operation mode within a predetermined time unit (30 minutes). The operation time for each operation mode is obtained. Further, the sum of power consumption in the predetermined time unit (30 minutes) for each system obtained from the distribution board 100 (hereinafter referred to as total measured power amount), that is, in the predetermined time unit (30 minutes). The total amount of power consumption of the air conditioner (indoor unit) 12 and the showcase group 21 is obtained.
[0021]
Such an operation is repeated every predetermined time unit.
[0022]
Table 1 shows the operation time and the total measured power amount for each operation mode of the air conditioner (indoor unit) 12 and the showcase group 21 obtained for each predetermined time unit.
[0023]
[Table 1]

[0024]
In Table 1, the meaning of each symbol is as follows.
[0025]
x _Ni: predetermined time unit specified by i (30 min) time mode of operation of the showcase group 21 was cooling mode (N) in x _Di: a predetermined time unit (30 min) specified by i in During the predetermined time unit (30 minutes) specified by the time x _Li : i when the operation mode of the showcase group 21 was the defrosting mode (D), the operation mode of the air conditioner 12 was the low wind mode (L). time x _Mi: i at time operation mode of the air conditioner 12 in a predetermined time unit (30 min) specified was paralytic mode (M) x _Hi: predetermined time unit (30 min) specified by i Time y _i during which the operation mode of the air conditioner 12 was the strong wind mode (H): Total measured electric energy during a predetermined time unit (30 minutes) specified by i
(2) _Let the unknowns W _N , W _D , W _L , W _M , and W _H be the power consumption per minute for the showcase group 21, the air conditioner (indoor unit) 12, and each operation mode.
[0027]
W _N : Power consumption per minute when the showcase group 21 is operated in the cooling mode (N) W _D : Per minute when the showcase group 21 is operated in the defrost mode (D) Power consumption W _L : power consumption per minute when the air conditioner (indoor unit) 12 is operated in the low wind mode (L) W _M : air conditioner (indoor unit) 12 is in the medium wind mode (M Energy consumption per minute in the case of being operated in) W _H: Energy consumption per minute when the air conditioner (indoor unit) 12 is operated in the strong wind mode (H) the
_Assuming that the power consumption per minute for each operation mode of the showcase group 21 and the air conditioner (indoor unit) 12 is unknown numbers W _N , W _D , W _L , W _M , W _H , the following equation (1) The following relational expression holds.
[0029]
[Expression 1]

[0030]
Since the relational expression of the above formula (1) is obtained for each data (see Table 1) obtained for each predetermined time unit, the unknowns W _N , W _D are obtained based on the obtained plural relational expressions. , W _L , W _M , and W _H are obtained by matrix operation (multiple regression analysis).
[0031]
That is, the following relational expression (2) holds.
[0032]
[Expression 2]

[0033]
In the above formula (2), the meaning of each symbol is as follows.
[0034]
S ² x _N : x _N dispersion S ² x _D : x _D dispersion S ² x _L : x _L dispersion S ² x _M : x _M dispersion S ² x _H : x _H dispersion Sab: a and b (For example, Sx _N x _D is the covariance of x _N and x _D )
[0035]
Therefore, unknowns W _N , W _D , W _L , W _M , and W _H can be obtained based on the following equation (3).
[0036]
[Equation 3]

[0037]
Hereinafter, specific examples will be described.
[0038]
Table 2 shows specific examples of the operation time and the total measured electric energy for each operation mode of the air conditioner (indoor unit) 12 and the showcase group 21 obtained for each predetermined time unit.
[0039]
[Table 2]

[0040]
When the power consumption per minute for each operation mode of each of the showcase group 21 and the air conditioner (indoor unit) 12 is W _N , W _D , W _L , W _M , W _H , Based on Table 2, the following relational expression (4) is established.
[0041]
[Expression 4]

[0042]
Based on the above formula (3), W _N , W _D , W _L , W _M , and W _H are expressed by the following formula (5).
[0043]
[Equation 5]

[0044]
Solving the above equation (5), W _N , W _D , W _L , W _M , and W _H are as follows.
W _N = 4.993737≈4.9
W _D = 12.03131 ≒ 12.0
W _L = 10.01356≈10.0
W _M = 14.82631≈14.8
W _H = 20.09134≈20.1
[0045]
From the integration of the obtained W _N , W _D , W _L , W _M , W _H and the operation time for each operation mode of each predetermined time unit of the showcase group 21 and the air conditioner (indoor unit) 12 respectively. Table 3 shows the estimated power consumption for each operation mode.
[0046]
[Table 3]

[0047]
From Table 3, the estimated power consumption for each predetermined time unit for each of the showcase group 21 and the air conditioner (indoor unit) 12 is obtained by summing the estimated power consumption for each operation mode.
[0048]
【The invention's effect】
According to the present invention, an apparatus for calculating power consumption per unit time for each operation mode of equipment in a facility and equipment in the facility that can estimate the power consumption of each equipment in the facility by a simple method. power consumption calculation apparatus is realized.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an in-facility electrical device system.
FIG. 2 is an explanatory diagram for explaining types of operation modes of each device;
FIG. 3 is a block diagram showing a configuration of an in-facility electrical device system assumed to explain a method of calculating a power consumption per minute for each operation mode of each device (device group).
FIG. 4 is a flowchart showing a method of calculating power consumption for each predetermined time (30 minutes) of each device (device group).
[Explanation of symbols]
11 Air conditioner (outdoor unit)
12-13 Air conditioner (indoor unit)
21, 22 Showcase group 23 Refrigerator 100 Distribution board 200 Facility integrated controller

Claims (2)

In the power consumption calculation device per unit time for each operation mode of equipment in the facility,
A first means for measuring the total power consumption of each device in a predetermined time unit for each predetermined time unit;
Based on a predetermined time unit, for each device, a second means for calculating the operating mode-specific operating time in the predetermined time in the unit, as well as measurement results by a plurality of times of the first means and the calculation result of the second means Then, the third means for obtaining the power consumption per unit time for each device for each operation mode using a matrix operation,
An apparatus for calculating power consumption per unit time for each operation mode of equipment in a facility. In the power consumption calculation device for equipment in the facility,
A first means for measuring the total power consumption of each device in a predetermined time unit for each predetermined time unit;
Based on a predetermined time unit, for each device, a second means for calculating the operating mode-specific operating time in the predetermined time in the unit, as well as measurement results by a plurality of times of the first means and the calculation result of the second means Then, the third means for obtaining the power consumption per unit time for each device for each operation mode using a matrix operation,
Based on the power consumption per unit time for each operation mode obtained by the third means and the calculation result of the second means, the power consumption within the predetermined time unit for each equipment is calculated. A power consumption amount calculation device for equipment in a facility, comprising: a fourth means.

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