JP4310235B2 - Energy saving system - Google Patents

Description

  The present invention relates to an energy saving system that realizes energy saving by centrally managing the energy used by each consumer such as a building or a house at a management center, and in particular, energy that is installed in a building or house and performs monitoring control for energy saving. The present invention relates to a monitoring control device.

  Public energy suppliers such as electric power, gas, and water supply are obliged to be able to continuously supply energy that is supplied to various plants, manufacturing facilities, and transportation facilities, and energy that is supplied to buildings and houses. For this reason, energy suppliers are trying to secure energy supply facilities in anticipation of the maximum expected energy demand, but in recent years the energy demand temporarily exceeds the energy supply capacity depending on the date, season, and weather. Therefore, energy conservation has become an urgent issue. In addition, there is a demand for energy saving in order to prevent global warming.

  With regard to energy saving, large-scale customers of various plants and the like are promoting energy saving through various measures and improvements in the entire equipment and equipment. On the other hand, to save energy in buildings and houses, reduce the operating time of electrical equipment such as air conditioners and adjust temperature settings, prevent forgetting to turn off TVs and lighting equipment, and use gas and water in gas and water facilities We can cope with reduction of quantity.

  However, energy conservation measures in buildings and homes require minor adjustments and operations of energy-using devices by residents, and these adjustments and operations must be taken into account when and when energy conservation is required. It is difficult to perform accurately and effectively.

  Under such circumstances, energy saving systems have been proposed for effectively saving energy in buildings and houses by centralized management of a management center (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3). .

  In Patent Document 1, the total power amount in the power supply area is monitored by the energy management center installed in the power company, and when this total power amount exceeds the reference value, it is individually provided from the management center to the building or house. The functional configuration is such that the saving message is transmitted to the monitoring device via the communication network. The monitoring device is also provided with a power monitoring function for storing power consumption as trend data, and a power amount transmission function for determining a power rate when the management center receives the trend data.

  In Patent Document 2, the power consumption is collected at the energy management center as measurement data for each office building, and the total power demand is predicted based on the power consumption history pattern of each office building and the current weather. It is a system that commands power consumption control of each office building by electric power.

In Patent Document 3, a network connection is obtained between a service center and each building using a power line as a communication line, and the state of electricity use is confirmed at a remote location and control of power distribution equipment in the building is possible from a remote location.
JP 2002-133568 A JP 2002-209335 A Japanese Patent Laid-Open No. 2004-23966

(Problem 1)
In the energy saving system of Patent Document 1, an energy control command is transmitted to the energy monitoring control device only when the amount of energy used collected by the energy management device is equal to or greater than a set reference value. In this case, the use energy cannot be suppressed until the use energy amount exceeds the reference value, and an energy saving effect of a certain value or more cannot be obtained.

  Similarly, in Patent Document 2, it is possible to suppress energy early by transmitting a power consumption control command predicting the total demand power, but it is not possible to control the use energy until the predicted power consumption exceeds a reference value.

(Problem 2)
In the energy control systems of Patent Documents 1 to 3, when the energy monitoring control device receives an energy control command, the following operation or control is obtained.

  (A) The unnecessary energy device is stopped manually.

  (B) The energy device is forcibly stopped by automatically turning off an energy switch such as a switch.

  In the case of the above (a), although the use energy exceeds the reference value, a reduction in use energy is entrusted to humans, so a reliable control effect cannot be expected. On the other hand, in the case of (b), the energy device is automatically and forcibly stopped, which causes inconvenience and trouble for the user of the energy utilization device.

  The objective of this invention is providing the energy saving system which solved said subject.

  The present invention promotes energy use restraint by a consumer by transmitting energy use restraint information periodically created on the energy management device side based on a weather forecast or the like to the energy monitoring control device on the consumer side. In addition, energy use / related information of customers such as buildings and houses is individually collected by the energy monitoring and control device and transmitted to the energy management device. The energy management device issues an energy control command based on the energy use / related information. The energy monitoring control device transmits a priority to the energy control target device, and when the energy control command is given, the energy monitoring control device sequentially performs energy control according to the priority. With these functional configurations, the present invention solves the above-described problems and is characterized by the following configurations.

(1) An energy-saving system that centrally manages the energy used by each customer in buildings and houses equipped with various energy devices at a management center,
The management center is provided with an energy management device, the consumer is individually provided with an energy monitoring control device, the energy management device and each energy monitoring control device are provided with information communication means via a communication network,
Each of the energy monitoring control devices is
Energy usage related data collection / storage means for collecting and storing energy usage / related data consisting of energy usage data consumed by various energy devices and energy related data related to energy consumption;
Means for managing the priority of energy control preset for each energy device;
A group between the energy usage / related data collected in its own device and the energy usage / related data predicted from the past data stored in the energy usage-related data collecting / accumulating means and other energy monitoring and control devices An energy control command output means for outputting an energy control command when energy control is required in the consumer based on the managed energy use / related data;
When the energy control command output means outputs an energy control command, the energy control means performs energy control of the energy devices in the order of priority, and performs output control until energy control according to the energy control command can be executed;
It is provided with.

  As described above, according to the present invention, energy usage suppression information periodically created on the energy management device side is transmitted to the energy monitoring control device, so that energy usage suppression on the consumer side is promoted, that is, the energy consumption consumed is reduced. It can be suppressed in advance and the amount of energy used can be kept below the reference value as much as possible. Moreover, energy can be suppressed before the amount of energy used exceeds the reference value, and the energy saving effect can be enhanced.

  In addition, the energy monitoring / control device individually collects energy usage / related data and sends it to the energy management device. The energy management device sends an energy control command based on the energy usage / related data to the energy monitoring control device, Since the energy monitoring and control device sequentially performs energy control according to the priority set for the energy control target device, the energy control can be performed automatically without requiring the operation and judgment of the customer. The energy equipment can be controlled according to the demand and living environment.

  In addition to energy use data for various energy devices, the energy monitoring and control device collects energy-related data such as external environment data for buildings and houses, purchased energy data, and energy use necessity data for buildings. The equipment performs energy management considering these energy usage / related data, prediction data from past accumulated data, and group management energy data, making it optimal for residents compared to conventional energy management using only energy utilization data. While providing energy control, the energy saving effect can be further enhanced.

  In addition, the energy monitoring and control device enables independent energy control, so that the energy saving control function can be ensured even when communication network connection with the energy management device is impossible or difficult.

  In addition, the reference value for determining the necessity of energy control in the energy management device or energy monitoring and control device is to set the reference value determined based on the predicted annual energy usage value, thereby aiming to suppress the annual energy consumption. Energy control.

  FIG. 1 is an overall configuration diagram of an energy saving system showing an embodiment of the present invention. This system is an energy management system installed in a system management center such as an energy monitoring control device 100 and an energy supply source that are individually installed in buildings and houses A, B,. The energy monitoring and control device 100 and the energy management device 200 are equipped with a function for transmitting and receiving various information related to energy saving using a wireless or wired communication line (public line or dedicated line) 300.

  The energy monitoring and control device 100 configured by a computer and its input / output device includes at least an energy use suppression information acquisition / display function and a priority-based energy control function in software configuration.

  The energy management device 200 constituted by a computer and its input / output device transmits / receives energy use suppression information related to energy saving to / from each energy monitoring and control device 100, and centrally manages energy used by each building or house. A suppression function is provided in the software configuration.

  Hereinafter, the details of the functional configuration of the energy monitoring control device 100 and the energy management device 200 will be described in the case where power energy is an energy saving target. Note that the same functional configuration is realized when one or both of gas and water is included as an energy saving target.

(100) Energy Monitoring and Control Device FIG. 2 shows a functional block diagram of the energy monitoring and control device. The data collection unit 101 collects data of power energy currently being used by various energy utilization devices (air conditioners, lighting devices, televisions, etc.) ED installed in units of buildings and houses in an energy consumption data collection unit 101A. For this data collection, for example, the measured value of an ammeter provided for each indoor branch breaker is captured as digital data. The energy related data collection unit 101B of the data collection unit 101 collects energy related data related to energy use. This energy-related data includes external environmental data for buildings and houses (data related to building loads such as temperature, humidity, solar radiation, and illuminance), purchased energy data (unit price information on energy purchased in buildings and procurement of natural energy) Ratio, CO ₂ basic unit, etc.) and energy use necessity data in the building (usage status of each room in the building, etc.).

  The data accumulating unit 102 accumulates the energy use / related data collected by the data collecting unit 101 for each fixed period such as hourly, daily, weekly, and monthly.

  The communication unit 103 performs information communication for energy saving with the energy management apparatus 200 via the connected communication line 300. The communication unit 103 includes a data transmission unit 103A, an energy control command reception unit 103B, and an energy use suppression information reception unit 103C.

  The data transmission unit 103A transmits the energy usage / related data managed by the data storage unit 102 each time it is required for the designated external device (in this embodiment, the energy management device 200 corresponds). The energy control command receiving unit 103B receives an energy control command for energy control transmitted from a designated external device (which corresponds to the energy management device 200 in the present embodiment).

  When the energy control command received by the energy control command receiving unit 103 is input, the energy control priority management unit 104 may control which energy device has priority among the energy devices ED such as an air conditioner and a lighting device. Control priority information for determining Control priority information is registered in advance by an energy user (customer) such as a building manager or a resident of a house.

  The energy control unit 105 receives the energy control command by the receiving unit 103B, and based on the priority managed and determined by the energy control priority management unit 104 for the energy control command, the energy use device ED such as an air conditioner or lighting is used. The energy suppression is controlled in order from the device with the highest priority. For this control, the power of the energy utilization device is cut off, the temperature setting value of the air conditioner is adjusted, and the like.

  The energy usage suppression information receiving unit 103C receives and receives energy usage suppression information for suppressing the usage energy transmitted from a designated external device (in this embodiment, the energy management device 200 corresponds). The energy use suppression information is passed to the customer interface 106.

  The customer interface 106 is a man-machine interface having a screen for displaying information to the information input device / customer from the customer. Information to be input includes control priority information, and information to be displayed includes collected energy use related data, energy use suppression information, contents of energy control commands, control status, and the like.

(200) Energy Management Device FIG. 3 shows a functional block diagram of the energy management device. The communication unit 201 performs information communication for energy suppression with the energy monitoring control device 100 via the connected communication line. The communication unit 201 includes at least a data reception unit 201A, an energy control command transmission unit 201B, an energy usage suppression information transmission unit 201C, and an energy usage suppression information external data collection unit 201D.

  The data accumulation unit 202 collects and accumulates energy usage / related data received from each energy monitoring control device 100 by the data reception unit 201A. The accumulated data processing unit 205 centrally manages the energy usage / related data predicted from the past data accumulated by the data accumulation unit 202 and the energy usage / related data between the energy monitoring control devices, thereby enabling the mutual data validity. Energy management / related data managed in groups that can be used is generated and stored in the data storage unit 202. The data stored in the data storage unit 202 and the data processed by the stored data processing unit 205 are used for energy use suppression management and energy control management.

  The external data collection unit 201D for energy usage suppression information acquires external information (such as weather information) that can be used for energy usage suppression manually or automatically. The energy usage suppression information management unit 203 registers various information necessary for energy usage suppression collected by the energy usage suppression information external data collection unit 201D, and this information and the energy usage / relevance stored by the data storage unit 202 are registered. Based on the data processed by the data and accumulated data processing unit 205, energy use suppression information is generated, and management for transmitting this to each energy monitoring control device 100 through the energy use suppression information transmitting unit 201C is performed.

  The energy control command management unit 204 determines whether or not the use energy control is necessary based on the use energy collected from each energy monitoring control device 100 and stored in the data storage unit 202 and the data processed and managed by the processing unit 205. . For example, it is determined whether or not it is necessary to control the use energy based on a comparison between the total amount of the used energy information and the reference value or a comparison between the used energy information predicted from the history information of the total used energy information and the reference value. As the reference value, a reference value based on the estimated annual energy use can be used as well as a reference value based on the maximum value can be adopted. By using the predicted annual use value as a reference value, it is possible to realize an energy control command aimed at suppressing the annual energy consumption.

  The energy control command management unit 204 performs information management for transmitting an energy control command to each energy monitoring control device 100 via the energy control command transmission unit 201B when it is determined that use energy control is necessary.

  The energy saving process performed by the energy monitoring control device 100 and the energy management device 200 configured as described above will be described in detail below.

(1) Collection of energy data (energy use / related data) In this embodiment, energy use / related data used in each building or house is collected by the energy monitoring and control device 100, and each energy is stored in the energy management device 200. Grasp the energy usage status from the data collected from the monitoring and control device 100, take into account external information such as weather forecast, and based on the data processed by the accumulated data processing unit 205, energy use suppression and energy control for energy saving Perform batch management.

  FIG. 4 shows an energy use / related data collection process flow. The energy monitoring and control apparatus 100 collects energy-related data such as energy usage data and external environment data collected from each energy device at regular intervals (S1), and displays the collected energy usage / related data on the interface 106 (S2). Further, the data is stored in the data storage unit 102 (S3). When the accumulated data becomes a certain amount of transmission data such as 1 kWh (S4), for example, the data transmission unit 103A transmits energy usage / related data to the energy management apparatus 200 (S5).

  In the energy management apparatus 200, the data reception unit 201A receives the energy use / related data transmitted from the energy monitoring control apparatus 100 (S6), and stores the received energy use / related data in the data storage unit 202 (S7). .

(2) Use of energy use suppression information In the conventional energy saving method, only when the amount of energy used collected by the energy management device is equal to or greater than the set reference value, or when the predicted amount of energy used exceeds the reference value, An energy control command is transmitted to the energy monitoring control device. In this case, the use energy cannot be suppressed until the use energy amount exceeds the reference value, and an energy saving effect of a certain value or more cannot be obtained.

  In the present embodiment, the energy management apparatus 200 periodically creates energy use suppression information according to a preset creation time interval, and the information is periodically received and displayed by the energy monitoring control apparatus 100. Information is provided to residents of buildings and houses to encourage the reduction of energy consumption, and energy is suppressed so that the energy consumption is below the reference value as much as possible.

  As the energy use suppression information input means using an external information source in the energy management apparatus 200, the following two methods are used, but either method may be used.

(A) Manual input method A person in charge manually inputs information to the energy management apparatus 200. In this method, it is not necessary to install a special function for information input in the energy management apparatus and the configuration is simple, but labor for maintaining the maintainability and freshness of information is required.

(B) Automatic collection method The energy management apparatus 200 automatically collects information on energy use from a website or the like. This method does not require labor for maintaining the maintainability and freshness of information for automatic collection, but requires an automatic collection function.

  As the energy use suppression information input means using an external information source in the energy management apparatus 200, the type and content are not particularly defined as long as it is information that leads to suppression of energy use. Information that leads to the suppression of energy use includes data obtained from an external information source (external data for energy use suppression information), data obtained by processing the data, energy-related data transmitted from the energy monitoring and control device 100, or data thereof Is used as information on the suppression of energy use based on any one of the data obtained by processing the data, the data predicted based on the energy use data transmitted from the energy monitoring control device, or a combination thereof.

  Examples of energy-related data obtained from the external information source include weather information and air temperature information. An example of energy use suppression information based on these information is shown below.

(C) Weather information Weather information is managed by the energy management apparatus 200, and together with the weather information, for example, information on the optimal washing day from the viewpoint of energy utilization, “Now it is cloudy and it is raining in the afternoon. So if you do laundry tomorrow, you don't need to use a dryer. " The energy monitoring and control apparatus 100 displays these pieces of information on the customer interface 106 and notifies the customer of the optimal washing day from the viewpoint of energy use.

(D) Air temperature information The air temperature information is managed by the energy management device 200, and together with the air temperature information, for example, the most suitable air conditioner operation method from the viewpoint of energy use “What is the temperature now, let's raise the set temperature of the air conditioner” “What temperature is now, stop the air conditioner and open the window?” Is transmitted to the energy monitoring and control device 100. The energy monitoring and control apparatus 100 displays these pieces of information on the customer interface 106 and notifies the customer of the optimal air conditioner operation method from the viewpoint of energy use.

In addition, energy-related data used for the above-mentioned energy use restraint information includes purchased energy data (unit price information on energy purchased in buildings, natural energy procurement rate, CO ₂ basic unit, etc.), energy use in buildings Sex data (usage status of each room in the building) etc.

  Among these, as an example of energy use suppression information based on energy use necessity data in the building, it is clear that there is no person in the room that is the energy use necessity data transmitted from the energy monitoring control device to the energy management device However, when the energy of the room is being used in the energy usage data transmitted from the energy monitoring and control device to the energy monitoring device, “No energy is consumed even though there are no people in this room. "Please check for energy saving."

  In addition, as an example of energy usage restraint information based on data predicted from energy usage data, when the predicted energy consumption is larger than a certain standard, “the energy consumption as it is will exceed the energy saving standard. Create energy use restraint information such as “Please reduce energy consumption”.

  FIG. 5 shows a processing flow of energy use suppression information based on an external information source. In the energy management device 200, the external data for energy usage suppression information is registered in the energy usage suppression information management unit 203 manually or automatically, and energy usage suppression information is created (S11). Among these, in the automatic registration process, the energy usage suppression information management unit 203 requests the external data collection unit 201D for energy usage suppression information to collect information (S11A), and the external data collection unit 201D for energy usage suppression information uses the Internet or the like. Various information required for energy use suppression is collected (S11B), and various information collected by the energy usage suppression information management unit 203 is processed into energy usage suppression information and registered (S11C). By registering the energy usage suppression information, the energy usage suppression information transmitting unit 201C transmits the energy usage suppression information to the energy monitoring control device 100 (S12).

  In the energy monitoring control apparatus 100, the energy use suppression information transmitted from the energy management apparatus 200 is received by the receiving unit 103C (S13), and the received energy use suppression information is displayed on the customer interface 106 (S14).

  By displaying the energy use suppression information based on this external information, the consumer's awareness of suppressing the use energy is increased, and further, the device operation for suppressing the use energy is promoted to suppress the use energy.

  FIG. 6 shows a processing flow of energy use suppression information based on energy use related data and processing data. In the energy management device, energy use related data for energy use restraint information and its processing data are registered in the energy use restraint information management unit 203, and energy use restraint information is created (S15). In the registration of the energy usage suppression information, the energy usage suppression information transmitting unit 201C transmits the energy usage suppression information to the energy monitoring control device 100 (S16).

  In the energy monitoring and control apparatus 100, the energy usage suppression information transmitted from the energy management apparatus 200 is received by the receiving unit 103C (S17), and the received energy usage suppression information is displayed on the customer interface 106 (S18).

  By displaying the energy use suppression information based on the energy use related data and the processing data, the consumer is made aware of the suppression of the use energy, and further the device operation for use energy suppression is promoted to suppress the use energy.

(3) Control with priority of energy equipment In the present embodiment, when the amount of energy used collected by the energy management device exceeds the set reference value in spite of the implementation of the above method, the energy control command Is transmitted to the energy monitoring and control apparatus 100.

  When the energy monitoring control device 100 receives the energy control command, as described above, (a) the unnecessary energy device is stopped manually, (b) the energy device by automatically turning off the energy switch such as a switch. There is a control method that forcibly stops. In the case of (a), although the use energy exceeds the reference value, the energy reduction is entrusted to humans, so a reliable control effect cannot be expected. In the case of (b), the energy device is forcibly stopped although it is automatic, which causes inconvenience or trouble to the device user.

  In the present embodiment, a priority device selection function is provided in the energy control by the energy monitoring control device 100, and the energy device is controlled according to the priority level.

  The energy user of the building or house registers the control priority for the energy suppression control (information on which energy device may be controlled preferentially) in the management unit 104 of the energy monitoring control device 100 in advance. When the priority is registered, the consent of the energy user to the energy control is obtained, and there is no problem even if the energy monitoring and control device 100 automatically executes the energy control.

  The energy control method to be registered is the following two methods, but any one method may be used.

(E) OFF control method A control method that completely stops the operation of the energy device. Although this system has a simple control circuit configuration, it is not control friendly to equipment and users. (F) Continuous value control system A control system that continuously adjusts the operation of energy equipment. In this method, the configuration of the control circuit is complicated, but the control is gentle to devices and users. FIG. 7 shows a processing flow of control with priority of energy devices. In the energy management device 200, the energy control command management unit 204 determines the necessity of transmitting the energy control command based on the energy use / relevant data received from the energy monitoring control device 100 and the processed data (S21). When the energy control command needs to be transmitted (S22), the energy control command management unit 204 creates an energy control command (S23), and the energy control command transmission unit 201B sends the energy control command to the energy monitoring control device 100. Transmit (S24).

  In the energy monitoring control device 100, the energy control command receiving unit 103B receives the energy control command from the energy management device (S25), first sets the energy control priority N to 0 (reset state) (S26), and the energy control priority. N is increased to 1 (highest priority) (S27), and an energy device or energy control method with priority N is acquired from the energy control priority management unit 104, and the device is cut off or energy consumption is adjusted. (S28).

  Thereafter, the energy utilization data after the control is collected by the data collecting unit 101 (S29), and it is checked whether or not the energy suppression control according to the energy control command has been executed (S30). Increases the priority N by 1 and executes energy suppression control for the next priority energy device (S27 to S29), and ends the control when energy suppression control according to the energy control command can be executed (S31).

(4) Self-sustained energy control of energy monitoring and control device The above-described energy monitoring and control device shows a case where energy control is performed under the management of the energy management device, but this function can also be provided in the energy monitoring and control device.

  In other words, the energy monitoring / control device collects energy usage / related data collected in its own device, energy usage / related data predicted from past data accumulated in its own device, and energy managed in groups among other energy monitoring / controlling devices. An energy control command output function is provided for outputting an energy control command when energy control is required at the consumer based on the usage / related data.

  By providing this function, the energy saving control function can be ensured even when communication network connection with the energy management apparatus is impossible or difficult.

1 is an overall configuration diagram of an energy saving system showing an embodiment of the present invention. The energy monitoring control apparatus block diagram in embodiment. The energy management apparatus functional block diagram in embodiment. The processing flow of energy utilization related data collection in an embodiment. The processing flow of the energy use suppression information based on the external information in the embodiment. The processing flow of the energy use suppression information based on the energy use related data and the processing data in the embodiment. The processing flow of control with priority of the energy equipment in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Energy monitoring and control apparatus 200 Energy management apparatus 300 Communication network 101 Data collection part 102 Data accumulation part 103 Communication part 104 Energy control priority management part 105 Energy control part 201 Communication part 202 Data accumulation part 203 Energy use suppression information management part 204 Energy Control command management unit 205 Accumulated data processing unit

Claims (1)

An energy-saving system that centrally manages the energy used by each customer in buildings and houses equipped with various energy devices,
The management center is provided with an energy management device, the consumer is individually provided with an energy monitoring control device, the energy management device and each energy monitoring control device are provided with information communication means via a communication network,
Each of the energy monitoring control devices is
Energy usage related data collection / storage means for collecting and storing energy usage / related data consisting of energy usage data consumed by various energy devices and energy related data related to energy consumption;
Means for managing the priority of energy control preset for each energy device;
A group between the energy usage / related data collected in its own device and the energy usage / related data predicted from the past data stored in the energy usage-related data collecting / accumulating means and other energy monitoring and control devices An energy control command output means for outputting an energy control command when energy control is required in the consumer based on the managed energy use / related data;
When the energy control command output means outputs an energy control command, the energy control means performs energy control of the energy devices in the order of priority, and performs output control until energy control according to the energy control command can be executed;
An energy saving system characterized by comprising

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