JP2008092680A - Energy management apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy management apparatus which can manage electric power consumption at each branched power line to facilitate the promotion of awareness for energy saving. <P>SOLUTION: The calculating section 2b of the energy management apparatus 2 integrates a branched electric power amount corresponding to each branched power line Lpmn, compares a target value corresponding to each branched power line Lpmn with the integrated value of the branched power amount for a fixed period of time, and when there is any branched power line Lpmn with its integrated value exceeding the target value, a reporting process is carried out through the control unit 2c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an energy management device that manages the amount of electricity used in a dwelling unit.

  Conventionally, the monthly amount of commercial power consumed in each home (dwelling unit) can be confirmed with an invoice sent from the power supply company or with web content created by the power supply company.

On the other hand, there is a system in which the main power amount can be measured in a home distribution board, and the measurement result can be monitored on a web screen. Further, in this system, the power consumption amount of other homes can be compared. (For example, refer to Patent Document 1).
Japanese Patent No. 3551302 (paragraph 0013, FIG. 1)

  However, in the system disclosed in Patent Document 1, although it is possible to compare with the power consumption of other households, the power currently used in each household (dwelling unit) is a power consumption suitable for energy saving. This is because the target value, which is an index for achieving energy conservation, is not known in each household, so it is only a comparison of power consumption in other households, and the actual power consumption contributes effectively to energy conservation. There was a problem of not knowing whether it was.

  On the other hand, for example, if efforts are made to reduce the usage time of electrical equipment in order to reduce the electricity usage fee for the current month from the previous month's electricity usage fee, it will lead to energy savings, but the user himself will manage the usage time etc. There is a problem that it must be managed with a sense of purpose and requires some effort.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an energy management apparatus capable of managing the amount of electricity used for each branch power path and facilitating energy saving. is there.

   In order to achieve the above-mentioned object, in the invention of the energy management device according to claim 1, the electricity usage of the corresponding branch power path is provided for each branch power path branched from the main power path via the branch breaker. Measuring means for measuring, and means for notifying when the measurement result of the measuring means satisfies a predetermined condition of the amount of electricity used corresponding to each branch power path, are provided.

  According to the invention of the energy management device of claim 1, based on the measurement result of the electricity usage for each branch power path, the electricity usage of the electrical equipment such as an air conditioner connected to the branch power path alone, Notification corresponding to the amount of electricity used for each room where the branch power path is wired can be made. As a result, the amount of electricity used can be managed finely, and energy saving can be facilitated.

  According to the invention of claim 2, in the invention of claim 1, for each branch power path, the target of electricity usage per fixed period based on history information of the electricity usage in each branch power path. Means is provided for automatically setting a value as the predetermined condition.

  According to the invention of the energy management device of claim 2, it is possible to manage the amount of electricity used for a certain period, save the user from setting the target value, and set a fine target value for each branch power path. .

  In the invention of the energy management device of claim 3, in the invention of claim 1 or 2, in the invention of claim 1 or 2, for each branch power path, a target value of electricity usage per fixed period set as a predetermined condition for each branch power path, and for each branch power path Based on the difference from the amount of electricity used by the measuring means provided, the estimated value of the usable time of the electrical equipment connected to the branch power path from the time of measurement to the remaining period with respect to the predetermined period Means is provided for displaying in branch breaker units.

  According to the invention of the energy management device of claim 3, the status for achieving the energy saving target can be displayed in an easy-to-understand manner, so that it is easy for the user to grasp the status of achieving the target, and further energy saving is promoted. It becomes possible.

  The present invention related to the energy management device is based on the measurement result of the electricity usage amount for each branch power path, so that the electricity usage amount of an electrical device such as an air conditioner connected to the branch power path alone, The notification corresponding to the amount of electricity used for each room to be wired can be made. As a result, it is possible to manage the amount of electricity used finely, and the effect of facilitating energy saving is facilitated.

   Hereinafter, the present invention will be described in detail according to an embodiment.

  As shown in FIG. 2, the power monitoring system using the energy management device of the present embodiment includes an integrated management panel 1 installed in a detached house or a dwelling unit of a housing complex, a branch power path Lp that supplies commercial power, and Lighting equipment, air conditioner (air conditioner), which is connected to the integrated management panel 1 through the information transmission path Li (enhanced category 5 or category 6 LAN cable) and the integrated management panel 1 supplies, controls and monitors power A plurality of electrical devices Xmn (m = 1, 2,..., N = 1, 2,...) Installed in dwelling units such as floor heaters and IH devices, and the integrated management panel 1 are connected via a LAN cable Li. A plurality of (two in the illustrated example) network terminals (personal computers (hereinafter referred to as personal computers) equipped with a web browser function) and networks equipped with a web browser function And the integrated control panel 1 and the network terminal constitute a residential network using general-purpose communication protocols (TCP / IP, UDP, HTTP, etc.). Yes.

  This dwelling unit network is, for example, a local area network (LAN) compliant with the 100BASE-TX (IEEE 802.3u) standard, and is connected to a later-described integrated device TM corresponding to a layer 3 switch in the integrated management panel 1 to a network terminal. (Personal computer PC and display control device CV) are connected by star wiring.

  The integrated device TM has an Internet connection function corresponding to the type of line (telephone line, CATV line, optical fiber line, etc.) for connecting to the Internet, and the dwelling unit network connects to the Internet as an external wide area network. Is done.

  A center server SV installed in a remote place away from the house is connected to the dwelling network through the Internet. As will be described later, a laptop PC, a mobile phone, a PDA (Personal Digital Assistance) that can be connected to the Internet. ), Etc., by performing data communication via the Internet between a portable network terminal (mobile terminal PT) having a web browser function and the center server SV, it is possible to control and monitor the electrical equipment in the dwelling unit from the outside. It can be carried out.

  The center server SV is composed of a general-purpose computer device having a network function. The center server SV is a message addressed to the integrated management panel 1 transmitted from the portable terminal PT through the Internet, and is addressed to a network terminal that does not belong to the residential network from the integrated management panel 1. Web server function for relaying messages sent to However, since the portable terminal PT and the center server SV having the Internet connection function as described above are well known in the art, the detailed illustration and description thereof are omitted.

  The integrated management panel 1 has both a function as a distribution board and a function as a housing information panel. As shown in FIG. 1, the main breaker that receives commercial power supplied from the outside to the dwelling unit on the primary side. Bs, a plurality of branch breakers Bmn inserted in a power path branched from the secondary side of the main breaker 1, an energy management device 2, an integrated device TM, and an electric device controller C1.

  Each branch power path Lpmn branched via the branch breaker Bmn is led out of the integrated management panel 1 and connected to each electric device Xmn to supply operation power.

  The energy management device 2 detects the amount of electricity used in the entire dwelling unit, detects the amount of electricity used in each electrical device Xmn via each branch breaker Bmn, and branches the detection data. A main current / voltage detection that has a web server function for generating web contents (web pages) to be displayed for each breaker Bmn (branch power path Lpmn) and periodically measures the value of the main current flowing through the main breaker Bs. Section CTV, power calculation section 2a that calculates the power of the entire dwelling unit (main power) supplied from the main current / voltage via main trunk breaker Bs, and the value of branch current flowing through each branch breaker Bmn. The information on the main power calculated by the branch current detection unit CTmn detected every time and the power calculation unit 2a A process for calculating and accumulating the power (hereinafter referred to as the main power amount) at a constant time interval is performed, and the branch current value measured by each branch current detector CTmn is input to each branch current value and the branch power path Lpmn. Based on the power factor information of the connected electrical equipment and the voltage of the branch power path Lpmn, the amount of power supplied from each branch power path Lpmn to the electrical equipment (hereinafter referred to as branch power quantity) is associated with each branch breaker Bmn. A calculation unit 2b that performs calculation and integration at time intervals, and stores and holds the main power amount and the integrated value of each branch power amount as history information of the main electricity use amount and the branch electricity use amount, and is input from the operation unit 2b Based on the information on the main power amount and the branch power amount, the web content indicating the main power amount (and main power usage amount) and the branch power amount (and the branch electric power usage amount) and the notification described later And a control unit 2c for generating an E blanking content.

  When the configuration of the calculation unit 2b is described in detail, the calculation unit 2b sets the upper limit value of branch electricity usage for a certain period (one day unit, one month unit, etc.) for each branch power path Lpmn connected to each branch breaker Bmn. Is set as a target value (predetermined condition) for this, and when this target value is compared with the branch electric energy accumulated every moment, when the branch electricity usage exceeds the target value before the day passes, A function of giving an instruction to create a web content for notifying the branch power path Lpmn (branch breaker Bmn) exceeding the target value to the control unit 2c, and the target value at the beginning of each month, for example, the main electricity usage of the previous month And a target value setting function that is automatically set based on the history information. The arithmetic unit 2b has a clock unit (not shown) for obtaining calendar information for setting the target value at the beginning of each month and for storing history information of the main electricity usage and the branch electricity usage. It shall be built-in.

  Further, the configuration of the control unit 2c will be described in detail. The control unit 2c stores in advance the data of the branch breaker Bmn for detecting the electric energy (name of the branch breaker: branch 1, branch 2,...). Web content is created as image data (for example, image data for branch power monitor) for displaying the main power amount and branch power amount in real time, or an event occurs that the above-mentioned branch electricity usage exceeds the target value Has a function (web server function) for creating (providing) (delivering) the web content to the network terminal in response to a request from the network terminal. Connected.

  In addition to the network terminal, the integrated device TM in the integrated management panel 1 and the electric device controller C1 are connected to the LAN cable.

  In the dwelling unit, a plurality of rooms Rn (n = 1, 2,...) Such as a living room, a bedroom, and a child room are provided. In FIGS. 1 and 2, for example, three rooms R1, R2, and R3 are provided. As provided, the electrical device provided in the room R1 is referred to as X1n, the electrical device provided in the room R2 is referred to as X2n, and the electrical device provided in the room R3 is referred to as X3n (n = 1, 2,...).

  Here, in general, branch power paths Lpmn are wired according to usage and room to fixed equipment such as air conditioning equipment and floor heating equipment, power outlets, lighting fixtures, etc. at the time of construction, and branch breakers corresponding to the branch power paths Lpmn The Bmn is uniquely determined to correspond to which application (connected electrical device) in which room.

  For example, the branch breaker B1n (n = 1, 2,...) In the integrated management panel 1 is connected to the electric device X1n in the room R1 or the power outlet circuit via the branch power path Lp1n (n = 1, 2,...). The power is individually supplied in a 1: 1 correspondence, and the branch breaker B3n (n = 1, 2,...) Is connected to each electric device X3n in the room R3 via the branch power path Lp3n (n = 1, 2,...). In addition, the branch breaker B20 supplies power to the electrical circuit for the power outlet individually in a 1: 1 correspondence. Similarly, the branch breaker B20 is connected to the electrical equipment X2n in the room R2 and the electrical circuit for the power outlet via the branch power path Lp20. Power is supplied collectively in response.

  In FIG. 1 and FIG. 2, the branch current detectors for detecting the branch currents of the branch breakers B1n and B3n are referred to as CT1n and CT3n, and the branch current detector for detecting the branch current of the branch breaker B20 is referred to as CT20.

  FIG. 3 shows a detailed configuration around the main breaker Bs, the branch breaker Bmn, and the branch current detector CTmn. The main breaker Bs and the branch breaker Bmn provided on the branch circuit Lp (12a, 12b) branching from the main circuit 11 are shown. In the integrated management panel 1 comprising: a plurality of sensors Smn for detecting each branch current; a plurality of sensor units Amn for generating detection data based on the detection output of each sensor Smn; and a branch current from each sensor unit Amn. A measurement control unit Ka that collects detection data, outputs the collected detection data as detection information, and a transmission path 6 that connects the sensor units Amn to the measurement control unit Ka in a chain shape, and the outside of the integrated management panel 1 A display unit that is exposed to display detection information output from the measurement control unit Ka to the user. It has a door Kb. The sensor Smn, the sensor unit Amn, and the measurement control unit Ka constitute the branch current detector CTmn.

  Then, the plurality of sensor units Amn are connected in a chain shape (in a daisy chain) by the transmission path 6, and the measurement control unit Ka is configured to output a trigger signal to the sensor unit A11 at the starting end, and each sensor unit Amn is When the trigger signal is received, detection data is generated and transmitted to the measurement control unit Ka, and thereafter, the trigger signal is output to the terminal side (next stage) sensor unit. The branch breakers B1n to B2n to B3n and the sensors S1n to S2n to S3n are assigned serial numbers (No1, No2, No3,...) In this order.

  And the low voltage distribution line 100 is connected to the primary side of the main breaker Bs, the main electric circuit 11 is connected to the secondary side terminal of the main circuit breaker Bs, and the branch electric circuit Lpmn is the voltage poles 11a and 11b of the main electric circuit 11. One end of the branch circuit 12a is connected to one end of the main circuit 11 and the branch circuit 12b is connected to the neutral pole 11c of the main circuit 11 at one end.

  The main breaker Bs includes a power supply side terminal (not shown) connected to the voltage electrodes 101 and 102 of the low voltage distribution line 100, a power supply side terminal (not shown) connected to the neutral electrode 103, and the voltage electrodes 101, Two load-side terminals (not shown) that are voltage poles corresponding to the power-side terminals connected to 102 and neutral poles that correspond to the power-side terminals connected to the neutral electrode 103 When a load side terminal (not shown), a power source side terminal and a load side terminal are energized, an operation handle H1 is provided which is positioned on the on side. The main breaker Bs is configured to shut off between the terminals when the overcurrent is generated between the power supply side terminal and the load side terminal and to position the operation handle H1 on the off side.

  The branch breaker Bmn is a power source for electrically connecting a branch path terminal portion (not shown) to which the other ends of the branch paths 12a and 12b can be connected, and a load side power line (not shown). A line terminal portion (not shown) and an operation handle H2 which is normally positioned on the side are provided. The branch breaker Bmn is configured to cut off between these terminals when an overcurrent is generated between the branch path terminal and the power line terminal and to position the operation handle H2 on the off side. Has been. Note that the main breaker Bs and the branch breaker Bmn may be configured to cut off the circuit not only for the overcurrent but also for the occurrence of a short-circuit current.

  On the other hand, the main electric circuit 11 and the branch electric circuits 12a and 12b are both made of a conductive metal plate, and the width, thickness, etc. of the main electric circuit 11 and the branch electric circuits 12a, 12b have a maximum current capacity that matches the maximum rated current of the main circuit breaker. Is set.

  Next, the sensor Smn, the sensor unit Amn, the measurement control unit Ka, the display unit Kb, and the transmission path 6 will be described. Here, the sensor Smn, the sensor unit Amn, and the transmission path 6 are formed and integrated on the printed circuit board 7, and the printed circuit board 7 will be described first.

  The printed circuit board 7 has a multilayer structure formed by laminating a plurality of insulating plates (that is, a multilayer circuit board), and as shown in FIG. 4, the insertion hole 7a for the branch path 12b penetrating the printed circuit board 7 on the front and back sides. There are multiple. In the printed circuit board 7, a plurality of through holes 7 b penetrating the printed circuit board 7 on the front and back sides are formed in the periphery of each insertion hole 7 a so as to surround the insertion holes 7 a. Furthermore, a plurality of through holes 7c penetrating from the front surface to the middle layer (a layer between the front surface and the back surface) are formed in the periphery of each insertion hole 7a in the printed board 7. A sensor Smn and a sensor unit Amn are mounted on the surface of the printed circuit board 7 and a transmission path 6 is formed. The sensor unit Amn may be configured by individually mounting necessary electronic components such as discrete semiconductors on a printed circuit board, or may be an integrated (integrated) necessary electronic component. . The printed board 7 is not limited to the multilayer board as described above, and a double-sided board may be used.

  The sensor Smn is a current sensor for detecting the current value of the branch path 12b corresponding to each branch breaker Bmn, that is, the current value flowing through the branch breaker Bmn. Since such a sensor Smn has the same configuration, only the sensor S11 will be described in detail.

  As shown in FIG. 4, the sensor S11 is a current sensor having a Rogowski coil composed of the coil line 20 formed on the printed circuit board 7, and outputs a differential form of the current as a detection output. The coil line 20 is formed on a pattern 21 a (shown by a solid line in FIG. 4) formed on the surface of the printed circuit board 7 through a through hole 7 b around the insertion hole 7 a of the printed circuit board 7 and on the back surface of the printed circuit board 7. And a coil portion 21 formed by connecting a pattern 21b (shown by a dotted line in FIG. 4). Furthermore, the end of the coil part 21 is connected to one end side of the return line 22 (shown by a one-dot broken line in FIG. 4) via the through hole 7c, and the other end side of the return line 22 is the end of the coil part 21. It is formed in the middle layer of the printed circuit board 7 so as to return from the side to the start end side of the coil portion 21 through the coil portion 21. That is, in the sensor S11, the start end side of the coil portion 21 and the other end side of the return wiring 22 are used as input terminals, respectively.

  Next, the sensor unit Amn generates detection data based on the detection output of the sensor Smn. The sensor unit Amn generates detection data including an effective value of the current value based on the detection output acquired from the sensor Smn, and starts operation. When the trigger signal is received, the detection data is modulated into a transmission signal and transmitted to the measurement control unit Ka. Furthermore, after transmitting the detection data, a trigger signal is output to the next sensor unit Amn.

  The measurement control unit Ka demodulates the transmission signal output by the sensor unit Amn, extracts detection data, and sequentially outputs the received detection data to the calculation unit 2b, and a trigger for collecting the detection data from the sensor unit. A function of outputting a signal to the sensor unit A11 at the start, and a function of generating display data corresponding to the detection data and outputting the display data to the display unit Kb.

  The display unit Kb includes, for example, a plurality of LEDs corresponding to each branch breaker Bmn, and the number of the branch breaker Bmn and the current corresponding to the branch breaker Bmn based on the display data output from the measurement control unit Ka. The value is displayed by turning off, blinking, turning on, or changing the color of the LED, and is provided in the integrated management panel 1 with the LED exposed to the outside of the integrated management panel 1.

  As shown in FIG. 3, the transmission path 6 connects the sensor unit Amn to the measurement control unit Ka using three lines of a trigger transmission line 60, a data transmission line 61, and a ground line 62. Here, the trigger transmission line 60 includes a connection line 60a for connecting the trigger signal output from the measurement control unit Ka to the sensor unit A11 at the start end in a one-to-one relationship, and a trigger signal sequentially transmitted from the sensor unit on the end side ( It consists of feed connection lines 60b to 60p that are connected one-to-one to the sensor unit of the next stage, and connects the sensor units Amn to the measurement control unit Ka in a chain shape.

  The data transmission line 61 connects detection data output from each sensor unit Amn to the measurement control unit Ka, and the ground line 62 is a trigger transmission line in the measurement control unit Ka and each sensor unit Amn. 60 and data transmission line 61 is used as a voltage reference. For the ground line 62, the illustration of the connection portion with the sensor unit Amn is omitted for simplification of the drawing.

  As described above, when the coil line 20 formed on the printed circuit board 7 is used as the sensor Smn, the integrated management in which the space that can be used by the main breaker Bs, the branch breaker Bmn, the main electric circuit 11, the branch electric circuits 12a, 12b, and the like is narrowed. Even in the casing of the panel 1, there is an effect that the sensor Smn can be arranged efficiently. In addition, the sensor Smn does not get in the way when the integrated management panel 1 is constructed, and the workability of the integrated management panel 1 is not impaired. Further, since such a sensor Smn has an air core, there is no iron core (magnetic core), so that there is an advantage that it can be reduced in size and weight, and there is no saturation due to the iron core. As a result, it is possible to obtain a current sensor having a wide dynamic range and capable of detecting a large current.

  FIG. 5 shows another structure of the sensor Smn, which includes a toroidal coil 31 formed on the printed circuit board 7. The toroidal coil 31 has a winding coil 32 (hereinafter referred to as a leading coil) in the winding direction and a rewinding coil 33 (hereinafter referred to as a return coil) in the rewinding direction. They are doubled and connected continuously in series. The advance coil 32 and the return coil 33 are displayed at equal pitch intervals on the outer circumference connecting the radial lines 34 and the radial lines 34 formed radially from the insertion holes 7a on the front and back surfaces of the printed circuit board 7. It is formed by a connection portion 35 provided on the back surface, and a through hole 36 that electrically connects the front and back radial lines 34 and the connection portion 35 electrically. In FIG. 5, these radial lines 34 and connection portions 35 are indicated by dark solid lines on the front surface side of the printed circuit board 7, and are indicated by white solid lines on the back surface side.

  The connecting portion 35 is formed so as to avoid adjacent radial lines on both the front and back surfaces. In addition, the connecting portion 35 connects the front side coil and the back side coil of the connecting portion 35 at the connecting portion by the through hole 36a in the advance coil 32 and the return coil 33, and this connecting portion sandwiches both the connecting portions. The front surface side and the back surface side of the coil are arranged so as to be approximately equal in length.

  The same number of through holes 36a and 36b are arranged at equal intervals on the circumference on the side farther and closer to the insertion hole 7a having the center 7d of the insertion hole 7a as the center. Through holes 36c and 36d for connecting the front and back radial lines 34 and the connecting portions 35 (35b) are provided at the boundary portions which are the ends of the front and back radial lines 34 and the connecting portions 35 (35b). The 36c and 36d are arranged symmetrically with respect to a straight line connecting the through holes 36a and 36b. Further, the through holes 36a and 36d (on the circumference of the radius R2) on the circumference connecting the connecting portion 35 and the through holes 36a (on the circumference of the radius R1) existing on the outermost circumference are externally connected. In order to suppress the influence on the magnetic field, it is desirable that the difference between the radii R1 and R2 is as small as possible. The difference between the radii R1 and R2 is more specific because of restrictions on the printed circuit board manufacturing (line width, throughland diameter). 1 mm or less.

  The radial lines 34 are arranged on the printed circuit board 7 at a constant pitch radially about the center 7d of the insertion hole 7a. The conductor part which comprises the radial line 34 and the connection part 35 is formed with the copper foil in the printed circuit board 7, and this copper foil can be formed by etching the double-sided printed circuit board which consists of an epoxy resin containing glass, for example. .

  The connection portion 35 is an end portion on the outer peripheral side of the radial line 34 (here, a boundary portion between the radial line 34 and the connection portion 35, for example, the return coil 33 indicates the through hole 36 c or 36 d, , Which extends in a circumferential direction from the radial line 34 of the advance coil 32 corresponding to the through-hole 36c or 36d of the return coil 33, and electrically connects the plurality of radial lines 34. And through the through-hole 36 (36a-36d), the edge part and the connection part 35 of the some radial line 34 formed in the front and back both surfaces of the printed circuit board 7, and the edge part of the radial line 34 in an opposite surface And the coil which winds the printed circuit board 7 by a conductor part is formed by connecting with the connection part 35 in series electrically.

  The advance coil 32 is electrically connected to the radial line 34 on the front side and the back side and the connection part 35a of the advance coil 32 through the through hole 36a with a through hole 36a provided at an intermediate position of the connection part 35a as a connecting part. To form a coil of one turn. Similarly, the return coil 33 forms a one-turn coil by electrically connecting the radial line 34 on the front side and the back side and the connecting portion 35b of the return coil 33 to each other through the through holes 36 (36a, 36c, 36d). . And the pitch of the coil | winding coil of this advance coil 32 and the return coil 33 is formed equally. Further, the connection portion 35 is formed so as to avoid the adjacent radial line 34, and the coil pattern formed by the connection portion 35 and the radial line 34 of both the coils 32 and 33 is formed in the same shape on the front and back of the printed circuit board 7. ing. With the above configuration, the conductor (conductor film) forming the coil of the toroidal coil 31 is formed substantially symmetrically and uniformly with respect to the central axis of the center 7d of the insertion hole 7a of the printed circuit board 7. In the current measurement using the sensor Smn, a measured conductor through which a current flows is passed through the insertion hole 7a, and an induced current generated by the magnetic flux of the magnetic field caused by this current passing through the cross-sectional areas of the coils 32 and 33 is generated. To detect.

  FIG. 6 is a partially exploded perspective view showing the arrangement of the main breaker Bs, the branch breaker Bmn, the branch current detection unit CTmn and the like in the integrated management panel 1, and a current sensor block SB is arranged beside the main breaker Bs. The sensor block SB is configured by attaching the printed circuit board 7 on which the sensor Smn, the sensor unit Amn, and the transmission path 6 are formed to face both sides of the long block body SB1 in the short side direction. A plurality of branch breakers Bmn are juxtaposed along the longitudinal direction on both sides of the current sensor block SB, and each branch breaker Bmn is arranged such that the branch path terminal portion faces each sensor Smn. Thus, the wiring work between the branch breaker Bmn and the sensor Smn can be easily performed. Further, above the current sensor block SB, a display unit Kb is attached to a bracket 41 on a rectangular frame provided via a spacer 40, and each LED of the display unit Kb is exposed outside the integrated management panel 1, The approximate value of each branch current is displayed.

  The integrated device TM shown in FIG. 1 is connected to a control unit 2c in the panel, an electric device controller C1, a personal computer PC outside the panel, and a display control device CV via a LAN cable, and a center server SV or a mobile phone through the Internet. Connected to the telephone MP or other network terminal, it has packet processing function, path switching function, network security function, UPnP (Universal Plug and Play) control point function, etc. I control the giving and receiving.

  The electric device controller C1 has an interface function between the integrated device TM and the electric device Xmn conforming to the unified standard of the Japan Electrical Manufacturers' Association (JEMA), and has received a control request message from the network terminal via the integrated device TM. Sometimes each electric device Xmn is individually controlled via the control cable Lj to switch between operation (lighting for lighting fixtures) and stop (lighting off for lighting fixtures) and monitoring from the network terminal via the integrated device TM When the request message is received, the operation state (operation <lighting> or stop <lighting>) of each electric device Xmn is individually acquired via the control cable Lj, and a response to each control request or monitoring request (each electric device) Xmn (operating state) message is sent to the network terminal that is the source of the request message via the integrated device TM (control supervision) Visual function).

  In addition, the electrical device controller C1 stores in advance device name information of the electrical device Xmn under its control, creates web content for displaying the name and operation state of the electrical device Xmn with characters and symbols, It also has a function (web server function) for providing (distributing) the web content to the network terminal in response to a request from the network terminal.

  In the power monitoring system configured as described above, a power monitoring request message is transmitted to the energy management device 2 from a personal computer PC in the dwelling unit, a display control device CV, or a network terminal such as a portable terminal PT connected to the Internet. When the control unit 2c of the energy management device 2 receives the power monitor request via the integration device TM, the power monitor image data generated by the control unit 2c has been transmitted via the integration device TM. Send to the network terminal.

  In network terminals such as personal computers PC, display control devices CV, and portable terminals PT that have received image data, the image data is displayed on the monitor screen of each network terminal, and the main power and the branch power for each branch breaker Bmn are monitored. it can. FIG. 7 shows a branch power monitor image displayed on the network terminal, and the branch power amount for each branch breaker Bmn is represented by a bar graph G1. In addition to the power graph display, the power monitor screen displays the date and time, the menu button that transitions to the menu screen, the previous page button and the rear page button that transition to the previous page and the subsequent page, and the past power amount. A history button for displaying data is provided.

  In this way, since the user can monitor the amount of power supplied for each branch breaker Bmn at any time using the network terminal, it is possible to identify the branch power system that is wasting power consumption, and the user can specify Energy saving can be easily achieved by performing specific operations such as stopping and turning off the electrical device Xmn connected to the branched power system.

  Furthermore, in this embodiment, the calculation unit 2b of the energy management device 2 compares the branch electricity usage amount in each branch power path Lpmn with the target value, and the main electricity usage amount exceeds the target value in this comparison. The calculation unit 2b notifies the control unit 2c so as to notify that it has exceeded. As a result, the control unit 2c creates a web content for notifying that the main electricity usage amount exceeds the target value, and transmits the power monitor request from the net terminal via the integrated device TM. Web content for notifying that the usage amount of the main electricity exceeds the target value is distributed. FIG. 8A shows a notification image displayed on the network terminal. In this image, a name (for example, a living air conditioner) indicating the installation location and type of the electric device Xmn corresponding to the branch power path Lpmn is included. A message is displayed.

  When the user who has seen the notification image clicks the confirmation button BT1 on the screen to notify the control unit 2c of the energy management device 2 through the web content that the confirmation has been made, the control unit 2c starts the electrical operation from the notification page. The device controller C1 is instructed to create web content that is an operation screen corresponding to the electrical device Xmn as shown in FIG. 8B, and the electrical device controller C1 transmits the created web content to the network terminal. It will be delivered in response to requests from.

  The user operates the operation button of the corresponding electric device Xmn (for example, a living air conditioner) on the operation screen displayed on the network terminal, stops the operation, stops the further increase in the amount of electricity used, and saves energy.

  The calculation unit 2b of the energy management device 2 performs the comparison process between the above-described target value and the branch electricity usage on a daily basis. On the other hand, for example, each branch electricity usage is accumulated in units of months and stored as history information in the calculation unit 2b. The target corresponding to each branch electricity usage of the current month based on the information of each branch electricity usage of the previous month stored at the time of month switching based on the calendar information of the clock part A process of calculating the value and updating the target value is performed. In this case, for example, when a target value used for daily comparison processing is set in units of one day, the target value is calculated based on historical information in units of one month. Further, the target value is set so as to be appropriately reduced to 1%, 5%, etc. with respect to the target value of the previous month in order to promote energy saving.

  As the history information used for setting the target value, the previous month's history information stored in the calculation unit 2b is used, but the history information is stored on the last day of each month in consideration of the capacity of the storage unit of the calculation unit 2b. May be transferred to the center server SV and stored, and the history information stored in the center server SV may be referred to when the target value is set.

  In the first year of installation, the target value is set based on the previous month's history information, but if one year has passed, the target value may be set using the same month's history information of the previous year. The target value can be set with high accuracy in consideration of seasonality.

  Further, when considering the use of electrical equipment with seasonality such as air conditioning equipment, the target value may be set based on the history information of the same month of the previous year. Also in this case, the history information may be stored in the center server SV in consideration of the storage capacity of the calculation unit 2b of the energy management device 2.

  In addition, the center server SV collects history information at each unit, and has a function of grouping common units with common localities (for example, prefectures, municipalities) to divide the history information into regions, thereby managing energy. When there is a history information reference request for setting a target value from the device 2, the history information of other dwelling units corresponding to the area to which the energy management device 2 is installed is sent to the energy management device 2. In the calculation unit 2b of the energy management device 2 that is trying to set the target value by providing it via the Internet and the integrated device TM of the dwelling unit, the master of the history information received from the center server SV at the dwelling unit in the same region For example, an average value may be calculated from the amount of electricity used, and the target value may be set based on the calculated value. . As a result, it is possible to accurately set a target value in consideration of weather such as temperature and rainfall, and regional characteristics with similar lifestyles. The history information in this case may be history information for the previous month or history information for the same month of the previous year.

  The center server SV has a function for grouping the dwelling units having the same family structure and dividing the collected history information according to the family structure, for example, based on the information of the family structure (number of households and age structure of each household) of each dwelling unit. If there is a reference request for history information to set a target value from the energy management device 2, the history information of other dwelling units having the same family structure as the unit where the energy management device 2 is installed is stored in the energy management device. You may make it give with respect to the apparatus 2 via the internet and the integrated apparatus TM of the said dwelling unit. The history information in this case may be history information of the previous month or history information of the same month of the previous year.

  By the way, when the amount of electricity used in the branch power path Lpmn exceeds the target value as described above, the user manually stops the operation of the corresponding electric device Xmn using the net terminal. Instead of the confirmation button BT1, the operation stop button BT2 is displayed on the notification image as shown in FIG. 8C, and when the user clicks the operation stop button BT2, the energy management device 2 corresponds to this. The control unit 2c may make a request to the electric device controller C1 to stop the operation of the electric device Xmn connected to the branch power path Lpmn. Thus, the electric device controller C1 performs control to stop the operation of the electric device Xmn, and energy saving can be achieved without bothering the user's own hands.

  In the above-described case, the target value is notified when the amount of branch electricity usage exceeds, but in this embodiment, in addition to this, for example, one month is divided into three periods, and each period is divided. Is created by the mail creation function provided in the control unit 2c of the energy management apparatus 2 in advance when the branch electricity usage is about to exceed the target value. You may make it notify by an e-mail.

  FIG. 9A is an example of an e-mail sent to a portable terminal PT such as a cellular phone. In this case, the name of the electric device Xmn connected to the corresponding branch power path Lpmn is described in the item “Sub”. At the same time, the message “I am going to exceed the target by the 10th of this month” and the URL of the website displaying the detailed information are described. When the user receives this e-mail, it is set by logging in to the website from the displayed URL and browsing the contents of the website displaying detailed information as shown in FIG. 9B. You can know the target value and the actual amount of electricity used. This website is constructed by the web server function of the control unit 2c of the energy management device 2, and information for the detailed display is acquired from the calculation unit 2c.

  In the web content shown in FIG. 9B, the target value and the actual value are displayed as a bar graph in which “*” is horizontally arranged, and the target value for this month is displayed as a numerical value.

  Thus, the user who viewed the web content can promote energy saving by refraining from using the electric device Xmn so as to reduce the amount of electricity used. In addition, it is possible to log in to the website arbitrarily, and if necessary, the user can know the actual value and the target value of the current electricity consumption.

  9A and 9B correspond to the portable terminal PT, but for a network terminal such as a display control device CV or a personal computer PC, it is shown in FIG. The target value and the actual value are displayed as a bar graph as a web content to notify in advance when the branch electricity usage is about to exceed the target value so that the target value and the actual value can be compared at a glance Web content is created by the control unit 2c.

  When the user operates the confirmation button BT3 on this screen, the control unit 2c that has received the operation information creates web content for displaying the expected usable time and distributes it to the network terminal. That is, when the control unit 2c receives the operation information, the calculation unit 2b determines from the difference between the target value and the actual value until the amount of electricity used by the electric device Xmn connected to the branch power path Lpmn reaches the target value. Instructs to calculate the available time. The calculation unit 2b calculates a usable time from the difference value based on, for example, the amount of electricity used per hour of the electric device Xmn, and gives this time information to the control unit 2c. Based on the time information from the calculation unit 2b, the control unit 2c creates web content for displaying the expected usable time as shown in FIG. 10B, and distributes the web content to the network terminal.

  Thus, the user who sees the expected usable time display in FIG. 10B refrains from using the electric device Xmn from the displayed information on the electric device Xmn, or stops operating until the target value is reached. It will be possible to take action to save energy such as

It is a block diagram which shows each structure of the electric power monitoring system using one Embodiment. It is a system diagram which shows a structure same as the above. It is a block diagram which shows a part circuit in the integrated management board same as the above. It is a top view which shows a sensor same as the above. It is a top view which shows another sensor same as the above. It is a partially exploded perspective view which shows the inside of an integrated management board same as the above. It is a top view which shows the image for branch power monitors for every branch breaker same as the above. (A) is a display example diagram of an example of web content for notification on the above-described network terminal, (b) is a display example diagram of an example of web content for an operation screen on the network terminal, and (d) is a network terminal. It is a display example figure of another example of the web content for information. (A) is a description example diagram of an e-mail addressed to a mobile terminal for advance notification of exceeding the target value, and (b) is an example display screen of mobile terminal web content for prior notification of exceeding the target value. . (A) is a display example diagram of web content for a network terminal such as a display control device for prior notification of exceeding the target value, and (b) is a display example diagram of web content for displaying the expected usable time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Integrated management board 2 Energy management apparatus Bs Master breaker Bm Branch breaker CTV Main current / voltage detection part CTmn Branch current detection part 2a Electric power calculation part 2b Operation part 2c Control part TM Integrated apparatus C1 Electric equipment controller PC Personal computer CV Display control device PT Mobile terminal Xmn Electric equipment SV Center server

Claims (3)

A measuring means provided for each branch power path branched from the main power path via the branch breaker and measuring the electricity usage of the corresponding branch power path, and the measurement result of the measuring means correspond to each branch power path. An energy management device comprising: a notification regarding the branch power path or a means for controlling the operation of the electrical device when a predetermined condition for the amount of electricity used set is satisfied. For each of the branch power paths, there is provided means for automatically setting the target value of the electricity usage per fixed period as the predetermined condition based on the history information of the electricity usage on each branch power path. The energy management apparatus according to claim 1. Measurement time point based on the difference between the target value of electricity usage per fixed period set as a predetermined condition for each branch power path and the electricity usage measured by the measuring means provided for each branch power path 2. A means for displaying an expected value of usable time of the electrical equipment connected to the branch power path from the first to the remaining period for the predetermined period for each branch breaker. Or the energy management apparatus of 2.

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