JP3783929B2 - Energy saving effect estimation method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an energy saving effect estimation method and an apparatus thereof, and more specifically, relates to a method and an apparatus for estimating an energy saving effect in an initial first period when energy saving operation control of various power devices is started.
[0002]
[Prior art]
2. Description of the Related Art Buildings that perform energy-saving operation control of various power devices have been increasing in order to meet the demand for energy saving. In addition, an increasing number of buildings are considering introducing energy-saving operation control for various types of power equipment.
[0003]
And corresponding to these, the importance of the performance verification (commissioning) which evaluates how much the energy-saving effect at the time of introducing energy-saving operation control is increasing.
[0004]
In order to meet this importance, conventionally, the energy saving amount resulting from the energy saving operation control is calculated from the power consumption amount when the energy saving operation control is applied and the power consumption amount when the energy saving operation control is not applied. Is adopted.
[0005]
In particular,
(1) A method for macro management of energy consumption efficiency by collecting and analyzing energy trend data and data such as outside air temperature that seems to be related to energy consumption over a long period of time (“Building Energy Conservation Management Method” Japan Building Energy Comprehensive Management Technology Association, Energy Conservation Management Method Chapter 5, p.258), and
(2) If energy conservation operation control has not been applied in the past (for example, the previous year) and data corresponding to this period has not been collected, energy conservation for a certain period in this year when energy conservation operation control is applied Establish an operation control non-applicable period, and from the relationship obtained during that period, calculate the power consumption when this year's energy-saving operation control is not applied, and apply this year's energy-saving operation control. Method for calculating energy saving amount from power consumption amount (refer to Japanese Patent Laid-Open No. 11-328152)
Has been proposed.
[0006]
[Problems to be solved by the invention]
When energy-saving operation control is applied, the power consumption is detected at a relatively short time interval (for example, every hour or every 30 minutes) in order to increase the energy saving effect by performing fine control, Prior to the introduction of energy-saving operation control, detection of the power consumption at such short time intervals is not performed.
[0007]
Therefore, when the above method (1) is adopted, the power consumption calculated from the relationship between the past power consumption and the outside air information such as the outside temperature becomes inaccurate, and the calculation accuracy of the energy saving amount is reduced. It will be lower. In other words, it cannot be applied when the amount of power consumption at relatively short time intervals is not collected.
[0008]
When the above method (2) is adopted, it is necessary to provide a period during which the energy saving operation control is not applied for the performance verification although the energy saving operation control can be applied. Cannot be achieved.
[0009]
In addition, a method of calculating an energy saving amount using a simulation has been proposed (see Japanese Patent Application Laid-Open No. 11-328152). However, in order to actually apply a simulation model, when energy saving operation control is applied, and energy saving Since correction (coefficient adjustment) based on performance data when operation control is not applied is necessary, a period during which energy-saving operation control is not applied must be provided, and sufficient energy saving cannot be achieved.
[0010]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-mentioned problems, and does not require power consumption for each relatively short time interval in the past, and also estimates an energy saving effect without providing a period during which energy saving operation control is not applied. It is an object to provide a method and apparatus that can be used.
[0011]
[Means for Solving the Problems]
The energy-saving effect estimation method according to claim 1 is a method for estimating an energy-saving effect in an initial first period when energy-saving operation control of various power devices is started, and includes a first period for each second period in the corresponding period. Collecting power consumption and storing it in a memory; calculating an approximate expression of the first power consumption and outside air information from the first power consumption and outside air information stored in the memory; The second case where it is assumed that the outside air information for each second period in the third period in which the energy saving operation control preceding the first period is not performed and the energy saving operation is performed using the approximate expression. Calculating the power consumption and storing it in the memory, calculating the energy saving rate based on the actual power consumption in the third period and the second power consumption, In this method, the energy saving amount by the energy saving operation is calculated from the calculated energy saving rate and the first power consumption amount.
[0012]
The energy saving effect estimation method according to claim 2 divides the first power consumption amount stored in the memory into a weekday power consumption amount and a non-weekday power consumption amount, and the outside air information corresponding to the divided power consumption amount. Thus, an approximate expression between the first power consumption amount and the outside air information corresponding to weekdays and non-weekdays is calculated and stored in the memory.
[0013]
The energy saving effect estimation method according to claim 3 divides the first power consumption stored in the memory for each season, and uses the classified power consumption and the corresponding outside air information to calculate the first power consumption for each season. This is a method of calculating an approximate expression between the quantity and outside air information and storing it in a memory.
[0014]
The energy saving effect estimation method according to claim 4 is a method of acquiring the actual power consumption amount of the third period preceding the first period from the electric power company.
[0015]
The energy saving effect estimation method according to claim 5 is a method in which the third period is a period longer than one year, and the energy saving rate for each year in the third period is displayed in time series.
[0016]
The energy-saving effect estimation apparatus according to claim 6 is an apparatus that estimates an energy-saving effect in an initial first period when energy-saving operation control of various electric power devices is started, and includes a first value for each second period in the corresponding period. An approximate expression of the first power consumption amount and the outside air information is calculated from the power consumption collecting means for collecting the power consumption amount and storing it in the memory, and the first power consumption amount and the outside air information stored in the memory. The approximate expression calculating means stored in the memory and the second power consumption when assuming that the energy saving operation was performed in the third period preceding the first period were obtained from the weather company, A power consumption calculating means for calculating and storing in the memory using outside air information for each second period and the calculated approximate expression, and a fourth period longer than the second period in the third period The energy saving rate calculating means for calculating the energy saving rate when assuming that the energy saving operation was performed based on the actual power consumption and the calculated second power consumption, and the calculated energy saving rate and the first Energy saving amount calculation means for calculating the energy saving amount by energy saving operation from the power consumption amount is included.
[0017]
The energy saving effect estimation apparatus according to claim 7, as the approximate expression calculating means, classifies the first power consumption stored in the memory into a power consumption on weekdays and a power consumption on non-weekdays, and An approximation formula of the first power consumption amount corresponding to weekdays and non-weekdays and the outside air information is calculated from the electric energy and the corresponding outside air information and stored in the memory.
[0018]
The energy-saving effect estimation apparatus according to claim 8, as the approximate expression calculation unit, divides the first power consumption amount stored in the memory for each season, and uses the classified power consumption amount and the corresponding outside air information to calculate the season What approximates a 1st power consumption for every and an external air information, and memorize | stores it in memory is employ | adopted.
[0019]
The energy saving effect estimation apparatus according to claim 9 employs, as the energy saving rate calculation means, an apparatus that obtains the actual power consumption amount of the third period preceding the first period from the electric power company.
[0020]
The energy saving effect estimation apparatus according to claim 10, wherein the third period is a period longer than one year, and employs an energy saving rate calculation unit that calculates an energy saving rate for each year in the third period. It further includes time series display means for displaying the energy saving rate for each year in a time series.
[0021]
[Action]
In the energy saving effect estimation method according to claim 1, when estimating the energy saving effect in the first first period when the energy saving operation control of various electric power devices is started, the first consumption for each second period in the corresponding period. Collecting the power amount and storing it in the memory, calculating an approximate expression of the first power consumption amount and the outside air information from the first power consumption amount and the outside air information stored in the memory, and storing them in the memory; The second case where it is assumed that the outside air information for each second period in the third period in which the energy saving operation control preceding the first period is not performed and the energy saving operation is performed using the approximate expression. Calculating the power consumption and storing it in the memory, calculating the energy saving rate based on the actual power consumption in the third period and the second power consumption, Since the energy saving amount by the energy saving operation is calculated from the calculated energy saving rate and the first power consumption amount, the first consumption for each second period only after starting the energy saving operation control of various power devices. It is only necessary to collect the amount of power, and the energy saving effect can be estimated without requiring the amount of power consumption for each relatively short time interval in the past and without providing a period during which the energy saving operation control is not applied.
[0022]
According to the energy saving effect estimation method of claim 2, the first power consumption amount stored in the memory is classified into a power consumption amount on weekdays and a power consumption amount on non-weekdays, and corresponds to the classified power consumption amount. Since the approximate expression of the first power consumption and the outside air information corresponding to weekdays and non-weekdays is calculated from the outside air information and stored in the memory, the weekdays and the non-weekdays whose trends in the power consumption greatly differ. It is possible to obtain an approximate expression with high accuracy corresponding to each of the above, and to improve the estimation accuracy of the energy saving effect.
[0023]
If it is the energy-saving effect estimation method of Claim 3, the 1st power consumption memorize | stored in memory will be divided for every season, and the 1st for every season will be calculated from the classified external power information and the corresponding outdoor air information. Since the approximate expression of power consumption and outside air information is calculated and stored in the memory, a highly accurate approximate expression can be obtained corresponding to each of the seasons with significantly different power consumption trends, saving energy. The estimation accuracy of the effect can be increased.
[0024]
If it is the energy-saving effect estimation method of Claim 4, since the actual power consumption of the 3rd period preceding the 1st period is acquired from an electric power company, the actual power consumption can be acquired easily. As a result, the same action as in any one of claims 1 to 3 can be achieved.
[0025]
In the energy saving effect estimation method according to claim 5, the third period is a period longer than one year, and the energy saving rate for each year in the third period is displayed in time series. When the power equipment is renewed at any time in the period, the effect of the power equipment renewal can be easily estimated, and the same effect as any one of claims 1 to 4 can be achieved. Can do.
[0026]
If it is an energy-saving effect estimation apparatus of Claim 6, when estimating an energy-saving effect in the first 1st period which started the energy-saving operation control of various electric power equipment, the 2nd period in an applicable period by a power consumption collection means The first power consumption amount is collected and stored in the memory, and the approximate expression calculation means calculates the first power consumption amount and the outside air information from the first power consumption amount and the outside air information stored in the memory. The approximate expression is calculated and stored in the memory, and the second power consumption when the energy saving operation is assumed to have been performed in the third period preceding the first period by the power consumption calculation means is calculated by the weather company. Is calculated using the outside air information for each second period in the third period and the calculated approximate expression, and is stored in the memory. Based on the actual power consumption for each fourth period longer than the second period and the calculated second power consumption in the period, the energy saving rate is calculated when it is assumed that the energy saving operation was performed. The energy saving amount calculation means can calculate the energy saving amount by the energy saving operation from the calculated energy saving rate and the first power consumption amount.
[0027]
Therefore, it is only necessary to collect the first power consumption for each second period only after starting the energy-saving operation control of various power devices, without requiring the power consumption for each relatively short time interval in the past, Moreover, the energy saving effect can be estimated without providing a period during which the energy saving operation control is not applied.
[0028]
In the energy saving effect estimation apparatus according to claim 7, as the approximate expression calculating unit, the first power consumption stored in the memory is classified into a power consumption on weekdays and a power consumption on non-weekdays. The power consumption and the outside air information corresponding to the first power consumption and the outside air information corresponding to weekdays and non-weekdays are calculated and stored in the memory. A high-accuracy approximate expression can be obtained corresponding to each of weekdays and non-weekdays whose amount trends are significantly different, and the estimation accuracy of the energy saving effect can be increased.
[0029]
In the energy saving effect estimation apparatus according to claim 8, as the approximate expression calculating means, the first power consumption stored in the memory is classified for each season, and the classified power consumption and the corresponding outside air information are used. Because it uses the one that calculates the approximate expression of the first power consumption for each season and the outside air information and stores it in the memory, the accuracy corresponding to each season with significantly different power consumption trends A high approximation formula can be obtained, and the estimation accuracy of the energy saving effect can be increased.
[0030]
If it is an energy-saving-effect estimation apparatus of Claim 9, since the thing which acquires the performance power consumption of the 3rd period preceding a 1st period from an electric power company is employ | adopted as the said energy-saving rate calculation means, a track record The amount of power consumption can be easily obtained, and as a result, the same operation as any one of claims 6 to 8 can be achieved.
[0031]
If it is an energy-saving effect estimation apparatus of Claim 10, 3rd period is a period longer than 1 year, and employ | adopts what calculates the energy-saving rate for every year in a 3rd period as an energy-saving rate calculation means. Since it employs a device that further includes a time series display means for displaying the calculated energy saving rate for each year in a time series, when there is a renewal of power equipment at any time in the third period The effect of updating the power equipment can be easily estimated, and the same operation as any one of claims 6 to 9 can be achieved.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an energy saving effect estimation method and apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.
[0033]
FIG. 1 is a schematic block diagram showing an energy saving operation control system in which an embodiment of the energy saving effect estimation apparatus of the present invention is incorporated.
[0034]
This energy-saving operation control system includes a target property 1 such as a building subject to energy-saving operation control, a remote monitoring center 2 for instructing energy-saving operation control for each target property 1, estimation of energy-saving effect, etc., a weather company 3, Each of the target properties 1, the weather company 3 and the remote monitoring center 2 have a network 4 for sending and receiving data.
[0035]
FIG. 2 is a block diagram schematically showing one embodiment of the energy saving effect estimation apparatus of the present invention.
[0036]
This energy-saving effect estimation device includes a non-control-time power consumption holding unit 51 that holds past power consumption (power consumption when energy-saving operation control is not applied), and weather information that holds current and past weather information. A holding unit 52, a control-time power consumption detection holding unit 53 that detects and holds the power consumption amount when applying energy-saving operation control every predetermined time (for example, every 30 minutes or every hour), and the past Power consumption amount, meteorological information, and energy consumption when the energy saving operation control is applied, an analysis processing unit 54 that calculates a power saving effect by performing a predetermined analysis process by inputting a power consumption amount, and energy saving that holds the calculated energy saving effect And an effect holding portion 55.
[0037]
FIG. 3 is a block diagram showing in detail the configuration of the analysis processing unit.
[0038]
The analysis processing unit 54 calculates the first power consumption every first predetermined time (for example, every 30 minutes) and the outside air information (outside air temperature, outside air humidity, discomfort index, etc.) at the time of applying the energy saving operation control. An approximate expression calculation unit 56 that calculates an approximate expression between the power consumption amount 1 and the outside air information and stores the approximate expression in a memory (not shown), and a second when it is assumed that the energy saving operation was performed in the period before the energy saving operation control is started. A power consumption amount calculation unit 57 that calculates the amount of power consumption using the outside air information every second predetermined time (for example, every hour) and the calculated approximate expression, and stores it in the memory, and energy saving operation control When it is assumed that energy-saving operation was performed based on the actual power consumption every third predetermined time (for example, every month) and the calculated second power consumption in the period before the start That the energy saving rate calculation unit 58 for calculating the energy saving rate, and a calculated energy saving rate and first power consumption, and a saving energy quantity calculating unit 59 for calculating the energy savings due to energy-saving operation.
[0039]
The first power consumption amount is used for finely performing energy saving operation control, and is integrated and converted into a power consumption amount for every second predetermined time and used for calculating an approximate expression. Further, the second power consumption amount is integrated for calculation of the energy saving rate and converted into a power consumption amount for every third predetermined time.
[0040]
Next, an embodiment of the energy saving effect estimation method of the present invention will be described with reference to the flowchart shown in FIG.
[0041]
In step SP1, outside air information is collected for each second predetermined period when energy-saving operation control is applied (for example, this year), and in step SP2, power consumption for each second predetermined period when energy-saving operation control is applied is calculated. In step SP3, based on the collected outside air information and power consumption, the relationship between the power consumption for each second predetermined period and the outside air information for each second predetermined period when applying energy saving operation control is defined. An approximate expression (power consumption estimation expression) is calculated. Specifically, the relationship between power consumption P and outside air information is:
P = P (temperature, humidity, discomfort index, ...)
It is generally considered to be multi-variable and non-linear, but for example,
P = a × T + b
(Where T is the outside air temperature, a and b are coefficients)
(See FIG. 5).
[0042]
Further explanation will be given.
[0043]
The detection results of the outside air temperature and power consumption (average power consumption) for each time period (for example, every 30 minutes, every hour, etc.) are given as shown in FIG. 6, and in a predetermined period (for example, 8:00 to 18:00) When the detection results of outside temperature and power consumption (average power consumption) are given as shown in FIG.
P = 6.4911T + 9.1475
P = 0.8171T + 14.517
An approximate expression expressed as follows is obtained.
[0044]
The coefficients a and b can be determined by multiple regression analysis based on a plurality of data sets of power consumption and outside air temperature.
[0045]
In addition, for example, when the operating status of the power equipment is greatly different between weekdays and holidays, it is preferable to obtain an approximate expression corresponding to weekdays and an approximate expression corresponding to holidays. Further, when the operating status of the power equipment varies greatly depending on the season, or when the operating status of the power equipment varies greatly depending on the month, it is preferable to obtain an approximate expression corresponding to the season and an approximate expression corresponding to the month. Furthermore, it is preferable to obtain an approximate expression corresponding to the case where heating is performed and the case where cooling is performed.
[0046]
Next, in step SP4, outside air information is collected every second predetermined period when energy-saving operation control is not applied (for example, the previous year), and in step SP5, the outside air information collected in step SP4 and the calculated approximate expression Based on the above, the power consumption amount estimated value for each second predetermined period when the energy saving operation control is virtually applied is calculated, and in step 6, the calculated power consumption amount estimated value is integrated to obtain the third It converts into the power consumption amount estimated value for every predetermined time. However, it is also possible to convert into a power consumption amount estimated value every predetermined time (for example, every year) longer than the third predetermined time.
[0047]
Thereafter, in step SP7, the power consumption amount for each third predetermined period when energy-saving operation control is not applied (for example, the previous year) is collected. In step SP8, the power consumption amount estimated value for each third predetermined time and the step An energy saving rate for each third predetermined time is calculated from the power consumption collected in SP7. However, it is also possible to calculate the energy saving rate every predetermined time (for example, every year) longer than the third predetermined time.
[0048]
Here, the energy saving rate can be calculated by calculating energy saving amount / non-control power consumption amount = (non-control power consumption amount-control power consumption amount) / non-control power consumption amount.
[0049]
Finally, in step SP9, an energy saving amount (energy saving effect) is calculated from the calculated energy saving rate and the collected power consumption amount for each second predetermined period when the energy saving operation control is applied (for example, this year), A series of processing is finished as it is.
[0050]
Here, the energy saving amount can be calculated, for example, by calculating the amount of power consumption during control * energy saving rate / (1−energy saving rate).
[0051]
In addition, as the approximate expression, for example, an expression that calculates the power consumption for each desired time such as every hour, every predetermined time (for example, an air conditioning time zone), every day, or the like can be adopted. However, in these cases, as the outside air temperature, an outside air temperature every hour, an average value of the outside air temperature for a predetermined time, and an average value of the outside air temperature every day are adopted.
[0052]
The approximate expression is given by P = a × T + b, but P = a × T ² It is possible to employ + b. Furthermore, as an approximate expression, P = a1 × T + a2 × H + b (where T is the outside air temperature and H is the outside air humidity) can be employed, and in this case, the outside air discomfort index is employed instead of the outside air temperature. It is also possible.
[0053]
By performing the above series of processing, it is possible to obtain an accurate power consumption estimation formula when applying energy-saving operation control based on fine power consumption and outside air temperature, and for the obtained power consumption estimation formula By applying past outside air information, it is possible to calculate the power consumption when it is assumed that energy-saving operation control is applied during the relevant period, and by comparing with the actual power consumption, the energy-saving rate can be calculated. Can be calculated.
[0054]
Then, by applying this energy saving rate when applying energy saving operation control, it is possible to calculate the energy saving amount (energy saving effect).
[0055]
That is, even when the past power consumption is not obtained in detail, the energy saving amount (energy saving effect) can be estimated with high accuracy without providing a period during which the energy saving operation control is not applied when the energy saving operation control is applied. it can.
[0056]
Further, another embodiment of the energy saving effect estimation method of the present invention will be described with reference to the flowchart shown in FIG.
[0057]
In step SP1, outside air information is collected for each second predetermined period when energy-saving operation control is applied (for example, this year), and in step SP2, power consumption for each second predetermined period when energy-saving operation control is applied is calculated. In step SP3, based on the collected outside air information and power consumption, the relationship between the power consumption for each second predetermined period and the outside air information for each second predetermined period when applying energy saving operation control is defined. An approximate expression (power consumption estimation expression) is calculated.
[0058]
Next, in step SP4, outside air information is collected every second predetermined period of the past N years (N years where energy-saving operation control is not applied), and in step SP5, the outside air information collected in step SP4 is calculated. On the basis of the approximate expression, an estimated power consumption amount for each second predetermined period when energy-saving operation control is virtually applied in the past N years is calculated. The values are integrated and converted into a power consumption amount estimated value for each third predetermined time. However, it is also possible to convert into a power consumption amount estimated value every predetermined time (for example, every year) longer than the third predetermined time.
[0059]
Thereafter, in step SP7, the power consumption for the third predetermined period of the past N years (N years for which energy saving operation control is not applied) is collected, and in step SP8, the energy saving operation for each year of the past N years is collected. The energy saving rate when the control is virtually applied is calculated, and in step SP9, the average value of the energy saving rate for each year of the past N years is calculated (see FIG. 9).
[0060]
Finally, in step SP10, an energy saving amount (energy saving effect) is calculated from the average value of the calculated energy saving rate and the collected outside air information for each second predetermined period when the energy saving operation control is applied (for example, this year). Then, the series of processing ends.
[0061]
Therefore, when this embodiment is adopted, it is possible to accurately estimate the energy saving amount (energy saving effect) when energy saving operation control is applied by reducing the variation in energy saving rate from year to year. The same effect as that of the embodiment can be achieved.
[0062]
Furthermore, still another embodiment of the energy saving effect estimation method of the present invention will be described with reference to the flowchart shown in FIG.
[0063]
In step SP1, outside air information is collected for each second predetermined period when energy-saving operation control is applied (for example, this year), and in step SP2, power consumption for each second predetermined period when energy-saving operation control is applied is calculated. In step SP3, based on the collected outside air information and power consumption, the relationship between the power consumption for each second predetermined period and the outside air information for each second predetermined period when applying energy saving operation control is defined. An approximate expression (power consumption estimation expression) is calculated.
[0064]
Next, in step SP4, outside air information is collected every second predetermined period of the past N years (N years where energy-saving operation control is not applied), and in step SP5, the outside air information collected in step SP4 is calculated. On the basis of the approximate expression, an estimated power consumption amount for each second predetermined period when energy-saving operation control is virtually applied in the past N years is calculated. The values are integrated and converted into a power consumption amount estimated value for each third predetermined time. However, it is also possible to convert into a power consumption amount estimated value every predetermined time (for example, every year) longer than the third predetermined time.
[0065]
Thereafter, in step SP7, the power consumption for the third predetermined period of the past N years (N years for which energy saving operation control is not applied) is collected, and in step SP8, the energy saving operation for each year of the past N years is collected. The energy saving rate when the control is virtually applied is calculated.
[0066]
In step SP9, the update history of the power equipment for the past N years is collected, and in step SP10, the energy saving rate (energy trend) for the past N years is displayed in time series (see FIG. 11).
[0067]
Although not shown in the flowchart, since it is possible to easily grasp the update timing of the power equipment from the time series display, only the energy saving rate of the year after the update of the latest power equipment is used. Similar to the processing, the average value of the energy saving rate can be calculated, and the energy saving amount (energy saving effect) can be calculated.
[0068]
Therefore, when this embodiment is adopted, it is possible to accurately estimate the energy saving amount (energy saving effect) when applying the energy saving operation control by eliminating the inaccuracy of the energy saving rate due to the update of the power equipment. In addition, the same operation as the embodiment of FIG. 8 can be achieved. In addition, by calculating and displaying the energy conservation rate going back to the past, including when the power equipment is renewed, it is possible to determine the power consumption trend (energy consumption trend) regardless of the climatic conditions. Can be estimated.
[0069]
Further explanation will be given.
[0070]
Energy trends can be estimated by retroactively applying approximate formulas created from this year's data. If the power equipment for energy saving has been updated in the past, it is possible to estimate retrospectively the extent of the energy saving effect by comparing the previous and next years. As a result, for example, what has been introduced as a 10% energy-saving facility can be evaluated retroactively in the past, which can be used for future power facility replacement plans.
[0071]
Even if there is no change in the power equipment, if the operation method is reviewed, the effect can be quantitatively evaluated, which can be used for future operation plans.
[0072]
If there is no change in the power equipment and the operation method is constant, it is possible to estimate the aging of the power equipment from the energy trend (for example, the trend when it gradually deteriorates), and for future power equipment review Can be useful.
[0073]
Furthermore, still another embodiment of the energy saving effect estimation method of the present invention will be described with reference to the flowchart shown in FIG.
[0074]
In step SP1, outside air information is collected for each second predetermined period when energy-saving operation control is applied (for example, this year), and in step SP2, power consumption for each second predetermined period when energy-saving operation control is applied is calculated. In step SP3, it is determined whether each day is a weekday or a holiday. If it is determined that the day is a weekday, in step SP4, energy saving operation control on weekdays is performed based on the collected outside air information and power consumption. An approximate expression (power consumption estimation expression) that defines the relationship between the power consumption for each second predetermined period and the outside air information for each second predetermined period when applied is calculated. On the other hand, if it is determined that it is a holiday, in step SP5, based on the collected outside air information and the power consumption amount, the power consumption amount and the second power consumption amount for each second predetermined period when the energy saving operation control is applied on a holiday. An approximate expression (power consumption estimation expression) that defines the relationship with the outside air information for each predetermined period of 2 is calculated.
[0075]
Next, in step SP6, outside air information is collected every second predetermined period when energy-saving operation control is not applied (for example, the previous year), and in step SP7, calendar information when energy-saving operation control is not applied (for example, the previous year) is collected. In step SP8, based on the outside air information collected in step SP6, the collected calendar information, and the calculated approximate expression, the second time when the energy-saving operation control is virtually applied in the previous year is collected. A power consumption estimated value for each predetermined period is calculated, and in step 9, the calculated power consumption estimated value is integrated and converted into a power consumption estimated value for a third predetermined time. However, it is also possible to convert into a power consumption amount estimated value every predetermined time (for example, every year) longer than the third predetermined time.
[0076]
Thereafter, in step SP10, the power consumption amount for each third predetermined period when energy-saving operation control is not applied (for example, the previous year) is collected. In step SP11, the power consumption amount estimated value for each third predetermined time and the step An energy saving rate for each third predetermined time is calculated from the power consumption collected in SP10. However, it is also possible to calculate the energy saving rate every predetermined time (for example, every year) longer than the third predetermined time.
[0077]
Finally, in step SP12, an energy saving amount (energy saving effect) is calculated from the calculated energy saving rate and the collected outside air information for each second predetermined period when the energy saving operation control is applied (for example, this year). A series of processing ends.
[0078]
Therefore, when this embodiment is adopted, it is possible to accurately calculate the energy saving amount (energy saving effect) even when the operating status of the power equipment is significantly different between weekdays and holidays.
[0079]
FIG. 13 is a block diagram showing another embodiment of the energy saving effect estimation apparatus of the present invention.
[0080]
This energy-saving effect estimation device collects and holds this year's outdoor air information storage unit 61 that collects and holds this year's outdoor air information from the weather company 3 through the network 4, and collects and holds the previous year's outdoor air information from the weather company 3 through the network 4. Year-round outdoor air information storage unit 62 and the target property 1 through the network 4 to collect and hold a power consumption measurement value every first predetermined time or second predetermined time of the current year A measured value storage unit 63, a previous year power consumption storage unit 64 that collects and holds actual power consumption every third predetermined time of the previous year by receiving a bill from the target property 1 through the network 4, or a book With this year's outdoor air information held in the year's outdoor air information storage unit 61 and the current year's power consumption measurement value held in the current year power consumption measurement value storage unit 63 as inputs, Energy saving application relation formula creating unit 65 that creates an approximation formula that defines the relationship between power consumption and outside air information when energy operation control is applied, and the previous year outside air information and creation stored in the previous year outside air information storage unit 62 Based on the approximate expression, the virtual energy saving application power consumption calculation unit 66 that calculates the power consumption for the second predetermined time when it is assumed that the energy saving operation control was applied in the previous year, and the calculated first A predetermined period integration unit 67 for calculating the power consumption amount for every third predetermined time by integrating the power consumption amount for every predetermined time of 2, and the third year of the previous year held in the previous year power consumption storage unit 64 Based on the actual power consumption per predetermined time and the power consumption per third predetermined time calculated by the predetermined period integration unit 67, it is possible to save energy when it is assumed that the energy saving operation control is applied. A virtual energy saving applied during the energy saving ratio calculation unit 68 for calculating the Energy rate, year to calculate the energy savings of this year based on the calculated energy saving rate and a energy-saving amount calculation unit 69.
[0081]
When the energy saving effect estimation apparatus having this configuration is employed, the same operation as that performed when the processing of the flowchart of FIG. 4 is performed can be achieved.
[0082]
FIG. 14 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
[0083]
This energy-saving effect estimation device collects outdoor air information storage unit 61 of this year through the network 4 from the weather company 3 and collects outdoor air information of the past N years from the weather company 3 through the network 4. Collecting and holding power consumption measured values for the first predetermined time or second predetermined time of the current year from the target property 1 through the network 4 and the past N years outside air information storage unit 62 ′ The past N years that collect and hold the actual power consumption every third predetermined time in the past N years by receiving this year's power consumption measured value storage unit 63 and the target property 1 through the network 4 or receiving the invoice This year's power consumption measurement unit 64 'and this year's outdoor air information held in this year's outdoor air information storage unit 61 and this year's power consumption measurement value storage unit 63 hold this year's power consumption measurement. With the value as an input, the energy saving application relational expression creating unit 65 that creates an approximate expression that defines the relationship between the power consumption and the outside air information when energy saving operation control is applied, and the past N years outside air information storage unit 62 ′ are held. When virtual energy saving is applied based on the outside air information for the past N years and the calculated approximate expression, the power consumption is calculated every second predetermined time when it is assumed that energy saving operation control has been applied in the past N years A power consumption calculation unit 66, a predetermined period integration unit 67 for calculating the power consumption for each third predetermined time by integrating the calculated power consumption for each second predetermined time, and power consumption for the past N years Energy saving based on the actual power consumption for every third predetermined time in the past N years held in the quantity storage unit 64 ′ and the power consumption for every third predetermined time calculated by the predetermined period integration unit 67 Operation control Energy saving rate calculation unit 68 ′ that calculates the energy saving rate when applied in the past N years when it is assumed to be applied, and the average energy saving rate for the past N years that calculates an average value based on the calculated energy saving rate for the past N years It has the value calculation part 60, and this year energy saving amount calculation part 69 which calculates the energy saving amount of this year based on the calculated average value.
[0084]
When the energy saving effect estimation apparatus having this configuration is employed, the same operation as that performed when the processing of the flowchart of FIG. 8 is performed can be achieved.
[0085]
FIG. 15 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
[0086]
This energy-saving effect estimation device collects outdoor air information storage unit 61 of this year through the network 4 from the weather company 3 and collects outdoor air information of the past N years from the weather company 3 through the network 4. Collecting and holding power consumption measured values for the first predetermined time or second predetermined time of the current year from the target property 1 through the network 4 and the past N previous year outside air information storage unit 62 ′ The past N years that collect and hold the actual power consumption every third predetermined time in the past N years by receiving this year's power consumption measured value storage unit 63 and the target property 1 through the network 4 or receiving the invoice This year's power consumption storage unit 64 ′ and this year's outdoor air information held in this year's outdoor air information storage unit 61 and this year's power consumption amount held in this year's power consumption measurement value storage unit 63. Using a constant value as an input, it is held in an energy saving application time relation creating unit 65 that creates an approximate expression that defines the relationship between power consumption and outside air information when energy saving operation control is applied, and in the past N years outside air information storage unit 62 ′. When virtual energy saving is applied based on the outside air information for the past N years and the calculated approximate expression, the power consumption is calculated every second predetermined time when it is assumed that energy saving operation control has been applied in the past N years A power consumption calculation unit 66, a predetermined period integration unit 67 for calculating the power consumption for each third predetermined time by integrating the calculated power consumption for each second predetermined time, and power consumption for the past N years Energy saving based on the actual power consumption for every third predetermined time in the past N years held in the quantity storage unit 64 ′ and the power consumption for every third predetermined time calculated by the predetermined period integration unit 67 Driving system The past N-year energy saving rate calculation unit 68 ′ that calculates the energy saving rate when applied to the past N years, the past N-year facility history storage unit 70 that holds the past N-year power facility history information, A past N-year energy saving rate time series display unit 71 that displays the energy saving rate for the past N years in a time series based on the energy saving rate for N years and the history information of the power equipment for the past N years.
[0087]
When the energy saving effect estimation apparatus having this configuration is employed, the same operation as that performed when the processing of the flowchart of FIG. 10 is performed can be achieved.
[0088]
FIG. 16 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
[0089]
This energy-saving effect estimation device collects and holds this year's outdoor air information storage unit 61 that collects and holds this year's outdoor air information from the weather company 3 through the network 4, and collects and holds the previous year's outdoor air information from the weather company 3 through the network 4. Year-round outdoor air information storage unit 62 and the target property 1 through the network 4 to collect and hold a power consumption measurement value every first predetermined time or second predetermined time of the current year A measured value storage unit 63, a previous year power consumption storage unit 64 that collects and holds actual power consumption every third predetermined time of the previous year by receiving a bill from the target property 1 through the network 4, or a book This year holiday information storage unit 72 that holds year holiday information, holiday information held in this year holiday information storage unit 72, and this year held in this year's outdoor air information storage unit 61 Approximate expression that defines the relationship between the power consumption amount and the outside air information when energy-saving operation control is applied, using the outdoor air information and the current year power consumption amount measurement value stored in the yearly power consumption measurement value storage unit 63 as inputs. Are stored in the energy saving application weekday / holiday relation formula creating unit 65 ′, which corresponds to holidays and weekdays, the previous year holiday information storage unit 73 holding holiday information for the previous year, and the previous year outside air information storage unit 62. Based on the previous year's outdoor air information, the previous year's holiday information held in the previous year's holiday information storage unit 73 and the approximate expression created corresponding to the holiday and weekdays, assuming that the energy saving operation control was applied to the previous year. A virtual energy saving applied power consumption calculation unit 66 ′ that calculates the power consumption for each second predetermined time, and the calculated power consumption for each second predetermined time are integrated to calculate the power consumption for each third predetermined time. A predetermined period integration unit 67 for calculating the power consumption, and a third power calculated by the actual power consumption every third predetermined time of the previous year held in the previous year power consumption storage unit 64 and the predetermined period integration unit 67. The virtual energy saving application energy saving rate calculation unit 68 that calculates the energy saving rate when it is assumed that the energy saving operation control is applied based on the power consumption amount for each predetermined time of the current year based on the calculated energy saving rate It has an energy saving amount calculation unit 69 for calculating the energy saving amount this year.
[0090]
When the energy saving effect estimation apparatus having this configuration is employed, the same operation as that performed when the processing of the flowchart of FIG. 12 is performed can be achieved.
[0091]
When the above embodiment is adopted, the correction based on the outside air information is performed, so that the effect of applying the energy saving operation control can be accurately estimated without being influenced by the climate.
[0092]
In addition, by adopting nearby AMeDAS data, it is not necessary to install a separate sensor, and it is possible to easily obtain outside air information every hour retroactively.
[0093]
【The invention's effect】
The invention of claim 1 only needs to collect the first power consumption for each second period only after starting the energy saving operation control of various power devices, and the power consumption for each relatively short time interval in the past. The energy-saving effect can be estimated without providing a period during which energy-saving operation control is not applied.
[0094]
The invention of claim 2 is unique in that it can obtain a high-accuracy approximate expression corresponding to each of weekdays and non-weekdays with significantly different power consumption trends, and can improve the estimation accuracy of the energy saving effect. There is an effect.
[0095]
The invention according to claim 3 has a specific effect that an approximate expression with high accuracy can be obtained corresponding to each of the seasons in which the power consumption trend is significantly different, and the estimation accuracy of the energy saving effect can be improved. .
[0096]
The invention of claim 4 can easily acquire the actual power consumption, and as a result, has the same effect as any one of claims 1 to 3.
[0097]
The invention of claim 5 can easily estimate the effect of updating the power equipment when the power equipment is updated at any time in the third period. There is an effect similar to either.
[0098]
The invention of claim 6 only needs to collect the first power consumption for each second period only after starting the energy saving operation control of various power devices, and the power consumption for each relatively short time interval in the past. The energy-saving effect can be estimated without providing a period during which energy-saving operation control is not applied.
[0099]
The invention of claim 7 is unique in that it can obtain a high-accuracy approximate expression corresponding to each of weekdays and non-weekdays with significantly different power consumption trends, and can improve the estimation accuracy of the energy saving effect. There is an effect.
[0100]
The invention of claim 8 has a specific effect that it is possible to obtain a high-accuracy approximate expression corresponding to each of the seasons with significantly different power consumption trends, and to improve the estimation accuracy of the energy saving effect. .
[0101]
According to the ninth aspect of the present invention, the actual power consumption can be easily obtained, and as a result, the same effect as any of the sixth to eighth aspects can be obtained.
[0102]
The invention of claim 10 can easily estimate the effect of updating the power equipment when the power equipment is updated at any time in the third period. There is an effect similar to either.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing an energy saving operation control system in which an embodiment of an energy saving effect estimation device of the present invention is incorporated.
FIG. 2 is a block diagram schematically showing one embodiment of an energy saving effect estimation apparatus of the present invention.
FIG. 3 is a block diagram showing in detail the configuration of an analysis processing unit.
FIG. 4 is a flowchart illustrating an embodiment of the energy saving effect estimation method of the present invention.
FIG. 5 is a diagram showing an example of an approximate expression showing the relationship between outside air temperature and power consumption.
FIG. 6 is a diagram illustrating a detection result of a relationship between an outside air temperature and average power consumption for each time period.
FIG. 7 is a diagram illustrating a detection result of a relationship between outside air temperature and average power consumption in a predetermined period.
FIG. 8 is a flowchart illustrating another embodiment of the energy saving effect estimation method of the present invention.
FIG. 9 is a diagram illustrating an example of an estimated value and an average value of an energy saving rate.
FIG. 10 is a flowchart for explaining still another embodiment of the energy saving effect estimation method of the present invention.
11 is a diagram showing an example of time-series display according to the embodiment of FIG.
FIG. 12 is a flowchart for explaining still another embodiment of the energy saving effect estimation method of the present invention.
FIG. 13 is a block diagram showing another embodiment of the energy saving effect estimation apparatus of the present invention.
FIG. 14 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
FIG. 15 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
FIG. 16 is a block diagram showing still another embodiment of the energy saving effect estimation apparatus of the present invention.
[Explanation of symbols]
3 Meteorological companies 63 This year's power consumption measured value storage
65 Energy saving application formula
66 Power consumption calculator when applying virtual energy saving
68 Energy saving rate calculation part when applying virtual energy saving
68 'Energy saving rate calculation part when applying energy saving in the past N years
69 Energy saving rate calculation part this year
71 Past N years energy saving rate time series display

Claims (10)

It is a method for estimating the energy saving effect in the first period when the energy saving operation control of various power devices is started,
Collecting the first power consumption amount for each second period in the corresponding period and storing it in the memory;
An approximate expression of the first power consumption amount and the outside air information is calculated from the first power consumption amount and the outside air information stored in the memory, and is stored in the memory.
The second case where it is assumed that the outside air information is acquired for each second period in the third period in which the energy saving operation control preceding the first period is not performed and the energy saving operation is performed using the approximate expression. Calculate power consumption and store it in memory,
An energy saving rate is calculated based on the actual power consumption amount and the second power consumption amount in the third period,
An energy saving effect estimation method, characterized in that an energy saving amount by energy saving operation is calculated from the calculated energy saving rate and the first power consumption amount. The first power consumption amount stored in the memory is divided into a power consumption amount on weekdays and a power consumption amount on non-weekdays, and it corresponds to weekdays and non-weekdays based on the classified power consumption and the corresponding outside air information. The energy saving effect estimation method according to claim 1, wherein an approximate expression between the first power consumption amount and outside air information is calculated and stored in a memory. The first power consumption stored in the memory is classified for each season, and an approximate expression of the first power consumption for each season and the outside air information is calculated from the classified power consumption and the corresponding outside air information. The energy saving effect estimation method according to claim 1, which is stored in a memory. The energy-saving effect estimation method according to any one of claims 1 to 3, wherein an actual power consumption amount in a third period preceding the first period is acquired from an electric power company. The energy saving effect estimation method according to any one of claims 1 to 4, wherein the third period is a period longer than one year, and the energy saving rate for each year in the third period is displayed in time series. An apparatus for estimating the energy saving effect in the first period when the energy saving operation control of various power devices is started,
Power consumption collecting means (63) for collecting the first power consumption amount for each second period in the corresponding period and storing it in the memory;
An approximate expression calculating means (65) for calculating an approximate expression of the first power consumption amount and the outside air information from the first power consumption amount and the outside air information stored in the memory and storing the approximate expression in the memory;
Every 2nd period in the 3rd period which acquired the 2nd power consumption in the 3rd period preceding the 1st period when it assumed that the energy saving operation was performed from the weather company (3) Power consumption calculating means (66) for calculating and storing in the memory using the outside air information and the calculated approximate expression;
Energy saving rate when assuming that the energy saving operation was performed based on the actual power consumption and the calculated second power consumption for each fourth period longer than the second period in the third period Energy saving rate calculating means (68) (68 ') for calculating
An energy saving effect estimation device comprising: an energy saving amount calculating means (69) for calculating an energy saving amount by energy saving operation from the calculated energy saving rate and the first power consumption amount. The approximate expression calculating means (65) classifies the first power consumption stored in the memory into a power consumption on weekdays and a power consumption on non-weekdays, and the outside air information corresponding to the classified power consumption. The energy saving effect estimation apparatus according to claim 5, wherein an approximate expression of the first power consumption and outside air information corresponding to weekdays and non-weekdays is calculated and stored in a memory. The approximate expression calculating means (65) classifies the first power consumption stored in the memory for each season, and uses the classified power consumption and the corresponding outside air information to calculate the first power consumption for each season. 6. The energy saving effect estimation apparatus according to claim 5, wherein an approximate expression between the amount and the outside air information is calculated and stored in a memory. The said energy saving rate calculation means (68) (68 ') acquires the actual power consumption of the 3rd period preceding the 1st period from an electric power company. The energy-saving effect estimation apparatus described. The third period is a period longer than one year, and the energy saving rate calculation means calculates the energy saving rate for each year in the third period, and calculates the calculated energy saving rate for each year in time series. The energy-saving effect estimation apparatus according to any one of claims 6 to 9, further comprising time series display means (71) for displaying automatically.

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