JP2015061395A - Energy utilization support system, method of supporting the same and support program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy utilization support system capable of performing occasionally appropriate operation while reducing total energy consumption amount at a constant ratio.SOLUTION: The energy utilization support system regularly measures energy consumption amount of each of plural energy utilization apparatuses in a facility to be managed; acquires a piece of meteorological information including a weather forecast; accumulates the measurement result of the energy consumption amount together with the meteorological information; predicts the long-term energy consumption of the plural energy utilization apparatuses from previous result based on the accumulated information and the meteorological forecast; determines an operation target for reducing the energy consumption based on the energy consumption prediction result; creates a long-term operation plan of each of the plural energy utilization apparatuses based on the operation target; and creates a short-term operation plan by dividing the long-term operation plan. When the measurement result is expected to exceed an allowable range, the energy utilization support system corrects the short-term operation plan to be within the allowable range while considering the long-term operation plan.

Description

  Embodiments of the present invention relate to an energy use support technology for achieving appropriate use for a user while realizing a demand for power saving in energy management of a building such as a building.

  In recent years, as an energy management system for buildings such as buildings, a system for monitoring the energy usage status of electric devices such as air conditioners and lighting facilities has been put into practical use. According to this system, by monitoring the energy usage status, it is always judged whether there is any uselessness, and so-called energy saving operation is performed to reduce peak energy consumption.

  By the way, in order to realize further energy saving, we will reduce energy consumption by supplementing the energy used by buildings with renewable energy such as solar power generation and policies that set annual energy consumption per floor area. Etc. are being promoted.

  However, in order to comply with the regulation value of annual energy consumption per floor area, simply performing a 10% reduction compared to the previous year, it is necessary to refrain from air conditioning unpleasantly on a hot day, or use of air conditioning In the few seasons, there was a case where it was practically impossible to do so, for example, there was no room for reduction unless the operation of equipment necessary for work was reduced. There is also the challenge of over-savings because you don't know exactly whether you can achieve your goals throughout the year. Moreover, in the operation combined with renewable energy such as solar power generation and wind power generation, it is necessary to operate in accordance with the power generation amount throughout the year including the prediction of the power generation amount.

Japanese Patent No. 3324265

  As described above, in the conventional energy saving measures, since a method of uniformly reducing at a constant rate is adopted, appropriate operation from time to time is difficult.

  An object of the present embodiment is to provide an energy use support system, a support method thereof, and a support program that can realize appropriate operation from time to time while reducing the amount of energy used at a constant rate as a whole. .

  The energy utilization support system according to the present embodiment includes a measurement unit, a weather information acquisition unit, a storage unit, a prediction unit, a target determination unit, a long-term plan planning unit, and a short-term plan planning unit. The measuring means periodically measures the amount of energy used by each of the plurality of energy using devices. The weather information acquisition means acquires weather information including a weather forecast. The accumulating unit accumulates the measurement result of the measuring unit together with the weather information. The prediction means performs long-term energy use prediction of the plurality of energy use devices from past results based on the stored information of the storage means and long-term weather prediction obtained by the weather information acquisition means. The target determining means determines an operation target for energy reduction from the prediction result of the prediction means. The long-term planning means creates a long-term operation plan for each of the plurality of energy utilization devices based on the operation target. The short-term planning means divides the long-term operation plan to create a short-term operation plan. The short-term planning means predicts whether the measurement result of the measuring means exceeds an allowable range when creating the short-term operation plan, and if it is predicted to exceed the allowable range, the long-term operation plan In consideration of the plan, the short-term operation plan is modified to be within an allowable range.

The block diagram which shows the whole structure of the energy utilization assistance system which concerns on embodiment. The flowchart which shows the whole flow for implementing the operation | movement about the system which concerns on embodiment. The flowchart which shows the detail of the process of the target data analysis part of the system which concerns on embodiment. The long-term operation plan of monthly energy usage throughout the year, actual results for this year, and PV power generation generated by the target data analysis unit of the system according to the embodiment, last year results for comparison (or past average results) The time chart which shows the example displayed with. The time chart which shows the example which displayed the result and plan of the energy usage-amount of every hour of the system which concerns on embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the overall configuration of the energy utilization support system according to the present embodiment. The system shown in FIG. 1 measures the amount of electric power generated and consumed by main energy power generation and consumption equipment (for example, photovoltaic (PV: Photovoltaic) power generation equipment, air conditioning equipment, lighting, OA equipment, etc.) provided in the building. Energy usage monitoring unit 12 for collecting the measurement results of each watt hour meter 111-11n, and monitoring the energy usage status in consideration of weather data including various weather information, etc. It comprises a display / operation terminal 13 that displays the monitoring result of the energy utilization monitoring unit 12 and issues a control instruction. On the other hand, the energy usage monitoring unit 12 and the display / operation terminal 13 cooperate with the building control unit 14 that controls the energy power generation / consumption equipment of the building.

  The energy usage monitoring unit 12 includes a data collection unit 121, a data storage unit 122, a target data analysis unit 123, and a display data generation unit 124. For example, the data collection unit 121 collects the measurement results (energy consumption, power generation data) of the watt-hour meters 111 to 11n together with weather data distributed through the external communication network. The data storage unit 122 stores the collection result of the data collection unit 121 in association with the weather data information. The target data analysis unit 123 analyzes the stored data of the data storage unit 122 in accordance with the power saving target data specified through the building control unit 14, and creates an operation plan for the next day and thereafter. The display data generation unit 124 generates display data to be presented to the user in a predetermined form for the energy consumption / power generation results indicated by the storage result of the data storage unit 122 and the operation plan obtained by the target data analysis unit 123. To do.

  The display / operation terminal 13 displays the display data generated by the display data generation unit 124 in response to a user request, and sends input information operated by the user to the building control unit 14 in accordance with the display content.

  The building control unit 14 is a control operation / screen generation unit 141 that accepts screens to the operator and receives control operations, and an automatic control that automatically controls air conditioning equipment and lighting according to room temperature and illuminance set according to the operation plan. Unit 142, and a building system control unit 143 that performs control communication with the energy generation / consumption equipment of the building, and performs automatic control according to an optimal operation plan with the support of the energy use support system. Cooperation between the energy use monitoring unit 12 and the building control unit 14 is performed by an operator's operation or by communicating between systems. Further, the energy usage monitoring unit 12 may be integrated with the building control unit 14.

  With reference to the flowchart shown in FIG. 2, the overall flow for implementing the operation in the energy utilization support system according to the present embodiment will be described. In FIG. 2, first, energy consumption / power generation data from each of the watt-hour meters 111 to 11n and weather data are periodically collected and stored through an external communication network (step S11). Next, the display data generation unit 124 generates display data for the actual energy use status (consumption) and the actual power generation based on the accumulated data (step S12). Further, the target data analysis unit 123 analyzes the data stored in the data storage unit 122 and generates an operation plan for the next day (step S13). On the day of operation, the display / operation terminal 13 receives an operator's instruction input to set and operate the air conditioning set temperature and illumination illuminance according to the operation plan (or receive automatic control of air conditioning, lighting, etc.) (Step S14). Here, the target data analysis unit 123 determines whether or not there is a change such as a large temperature rise according to the weather forecast in the morning of the day based on the weather data. If there is a change, the analysis is performed again. The plan is reviewed and corrected (step S15). Then, the building control unit 14 is instructed to modify and operate the set temperature in accordance with the revised / corrected operation plan (step S16). Thereafter, the operation results are confirmed, and the next day operation plan for achieving the annual target is performed (step S17). Continue operation by repeating the above procedure.

  Details of the processing of the target data analysis unit 123 will be described with reference to the flowchart shown in FIG. In FIG. 3, first, the correlation between the input condition and the energy usage amount is calculated from the past results (step S21), and long-term energy usage prediction data such as one year per month is generated (step S22). Further, long-term (annual) energy use prediction data is corrected from the temperature prediction based on the long-term weather forecast (step S23).

  Next, the annual energy usage per floor area is calculated, and the annual target reduction rate / reduction is calculated as a reduction target from the usage (step S24). Based on this, as a long-term operation plan, the reduction amount is allocated to the remaining schedule of the year (step S25). At this time, instead of simply assigning the energy use amount, the difference between the comfortable temperature for each season is assigned based on the correlation between the set temperature and the energy use amount.

  Subsequently, an operation plan for the next day is generated based on a weather forecast several days ahead from the next day (step S26). In this case, first, the energy use prediction is performed by the weather forecast of the next day, and the difference from the energy use plan assigned in the plan throughout the year is calculated. If energy usage is likely to increase, such as on extremely hot days or extremely cold days, based on weather forecasts a few days ahead, even if the usage temporarily increases, it can be offset by the recovered weather, Generate an operation plan that reduces comfort degradation. In addition, from the relationship between temperature and sunshine, an operation plan that suppresses the decrease in comfort is generated even when the energy consumption can be offset by power generation using solar power generation or the like.

  In FIG. 4, the long-term operation plan A, current year result B, and PV power generation C of the monthly energy usage throughout the year generated by the target data analysis unit 123 are compared with the previous year results (or past An example of displaying together with (average performance) D is shown. FIG. 4 shows an example in which an operation plan A for energy utilization for the remaining period of the current fiscal year is displayed following the actual result B of the current fiscal year, with April as the present. By taking into account seasonal temperature fluctuations, it is possible to confirm a plan to reduce paced energy use.

  FIG. 5 shows a display example of the results and plans of the energy usage amount for each hour. In FIG. 5, E is the operational target, F is the actual result, G is the PV power generation, H is the actual value for the same period of the previous year for comparison. For example, up to the standard value (for example, tax reduction target value) at 10:00 on that day The actual value and the energy usage operation plan for the remaining time are displayed. Incorporating sunlight and temperature changes due to weather forecasts into the planning of this operation plan, the energy usage operation plan that suppresses the decline in comfort is displayed, and the setting information for achieving the operation plan such as the recommended set temperature is displayed. To do. In addition, by transmitting this setting information to the building control unit 14, cooperative control is performed to automate the reduction of energy use.

  In the above embodiment, for the calculation of the correlation between the energy usage amount and the temperature, the demand forecasting technique used in the supply / demand adjustment of the electric power company, etc. is used, and the survey request such as the multiple regression analysis and the neural network is used. Can be assumed. Moreover, the method of calculating from the heat capacity of a building, heat insulation, and the efficiency of air-conditioning equipment is also possible.

  Therefore, according to the energy utilization support system having the above configuration, the operation plan is sequentially revised based on the change in weather and the forecast judgment, so that while reducing the energy consumption at a constant rate as a whole, Appropriate operation from time to time can be realized.

  In the support system of the above embodiment, the energy usage monitoring unit 12 may be integrated with the building control unit 14, but the energy usage monitoring unit 12 is located at a place different from the building to be managed. It arranges and connects with electricity meter 111-11n and building control part 14 through a network, collects the measurement result and weather data of electricity meter 111-11n, and controls display / control terminal 13 and building control part 14 remotely It is also possible to do. Further, under the control of a large number of buildings, the energy usage monitoring unit 12 can centrally execute control instruction processing for each building.

  Moreover, in the said embodiment, although the building was made into the control object, it cannot be overemphasized that various facilities other than a building are applicable as a management object facility.

  Moreover, the said embodiment is not limited as it is, In an implementation stage, it can change and implement a component within the range which does not deviate from the summary. Moreover, an appropriate combination of a plurality of constituent elements disclosed in the above embodiment may be used. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

111-11n electricity meter,
12 Energy usage monitoring department,
121 data collection unit,
122 data storage unit,
123 Target Data Analysis Department,
124 display data generation unit,
13 Display / operation terminal,
14 Building control unit,
141 control operation / screen generation unit,
142 automatic control unit,
143 Building system control unit.

Claims (15)

A measuring means for periodically measuring the energy usage of each of the plurality of energy using devices;
Weather information acquisition means for acquiring weather information including weather forecast;
Accumulating means for accumulating the measurement results of the measuring means together with the weather information;
Prediction means for performing long-term energy utilization prediction of the plurality of energy utilization devices from past results based on accumulated information of the accumulation means and long-term weather prediction obtained by the weather information acquisition means;
Target determination means for determining an operation target for energy reduction from the prediction result of the prediction means;
A long-term planning means for creating a long-term operation plan for each of the plurality of energy utilization devices based on the operation target;
Comprising short-term planning means for dividing the long-term operation plan and creating a short-term operation plan;
The short-term planning means predicts whether the measurement result of the measuring means exceeds an allowable range when creating the short-term operation plan, and if it is predicted to exceed the allowable range, the long-term operation plan An energy utilization support system that corrects the short-term operation plan so as to be within an allowable range in consideration of the plan. The short-term planning means divides the long-term operation plan into the short-term operation plan, and sets the operation target for energy reduction to the user's request for the allowable range of each short-term operation plan. The energy use support system according to claim 1, which is allocated. The short-term planning means considers the frequency of weather changes for each period of time as the long-term operation plan, and considers the difference in weather temperature as the short-term operation plan, and each of the operation targets for energy reduction. The energy use support system according to claim 1, wherein the minutes are distributed in accordance with a user's request. The energy usage support system according to claim 1, further comprising linkage means for transmitting air conditioning control data to the control system of the plurality of energy usage devices in accordance with the short-term operation plan so as to link control related to operation. The plurality of energy utilization devices include a power generation facility based on renewable energy,
The prediction means predicts the power generation amount of the power generation facility from the past performance in the power generation amount of the power generation facility and the long-term weather prediction,
The energy use support system according to claim 1, wherein the long-term planning means creates a long-term operation plan of the energy-using device based on a power generation amount prediction result of the power generation facility. Periodically measure the energy usage of each of the multiple energy-using devices,
Get weather information including weather forecast,
Accumulated energy usage measurement results of the energy usage device together with the weather information,
Perform long-term energy use prediction of the plurality of energy using devices from past results and weather prediction based on the accumulated information,
Determine operational targets for energy reduction from the energy use prediction results,
Create a long-term operation plan for each of the plurality of energy utilization devices based on the operation target,
The short-term operation plan shall be created by dividing the long-term operation plan,
When creating the short-term operation plan, the short-term plan predicts whether or not the measurement result exceeds the allowable range, and if the measurement result is predicted to exceed the allowable range, the long-term operation plan is considered. The energy use support method for correcting the short-term operation plan so as to be within an allowable range. When the short-term plan is divided, the short-term operation plan is divided into the short-term operation plans. The energy use support method according to claim 6, which is allocated. The planning of the short-term plan considers the frequency of changes in weather for each period of time as the long-term operation plan, and considers the difference in weather temperature as the short-term operation plan. The energy use support method according to claim 6, wherein the minutes are allocated according to the user's request. Furthermore, the energy usage assistance method of Claim 6 which transmits the air-conditioning control data to the control system of these several energy utilization apparatus according to the said short-term operation plan, and cooperates control regarding operation. The plurality of energy utilization devices include a power generation facility based on renewable energy,
The prediction means predicts the power generation amount of the power generation facility from the past performance in the power generation amount of the power generation facility and the long-term weather prediction,
The energy use support method according to claim 6, wherein the long-term planning means creates a long-term operation plan of the energy-using device based on a power generation amount prediction result of the power generation facility. An energy use support program that can be executed by a computer and that supports the operation of each of a plurality of energy use devices to reduce the amount of energy used.
A measurement instruction for periodically measuring the amount of energy used by each of the plurality of energy using devices;
A weather information acquisition command for acquiring weather information including a weather forecast;
An accumulation command for accumulating the measurement result together with the weather information;
A prediction command for performing a long-term energy usage prediction of the plurality of energy-using devices from a past performance based on the information stored by the storage command and a long-term weather prediction obtained by the weather information acquisition command;
A target determination command for determining an operation target for energy reduction from a prediction result of the prediction command;
A long-term planning instruction for creating a long-term operation plan for each of the plurality of energy utilization devices based on the operation target;
A short-term planning instruction that divides the long-term operation plan and creates a short-term operation plan; and
The short-term planning instruction, when creating the short-term operation plan, predicts whether or not the measurement result exceeds an allowable range, and if it is predicted to exceed the allowable range, the long-term operation plan is considered. An energy utilization support program for correcting the short-term operation plan so as to be within an allowable range. When the short-term operation plan divides the long-term operation plan and sets up the short-term operation plan, the operation target for energy reduction is matched with the user's request for the allowable range of each short-term operation plan. The energy use support program according to claim 11, which is distributed. The short-term plan drafting instruction considers the frequency of weather changes for each period of time as the long-term operation plan, and considers the difference in weather temperature as the short-term operation plan. The energy use support program according to claim 11, wherein the minutes are distributed according to the user's request. The energy use support program according to claim 11, further comprising a cooperation command for transmitting air conditioning control data to a control system of the plurality of energy use devices in accordance with the short-term operation plan so as to link control related to operation. When the plurality of energy utilization devices include a power generation facility based on renewable energy,
The prediction command causes the power generation amount of the power generation facility to be predicted from past results and the long-term weather prediction of the power generation facility,
12. The energy use support program according to claim 11, wherein the long-term planning instruction causes a long-term operation plan of the energy-using device to be created based on a power generation amount prediction result of the power generation facility.