JP2008202983A - Electric power monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric power monitoring system for making it easy to obtain a change in generated energy during each of prescribed totalization periods. <P>SOLUTION: A power conditioner 51 converts DC electric power input thereinto from a solar cell 50 into an AC current to output it to the commercial system side while measuring generated energy of the solar cell 50 to output it to a control part 2c. The control part 2c includes: a sold/bought electric energy measurement means 2d for determining whether electricity is being sold or being bought based on electric energy usage through each of branch breakers Bmn and input from the control part 2c, and on the generated energy of the solar cell 50 to measure sold energy if electricity is being sold; an intra-period sold/bought electric energy calculation means 2e for finding intra-period sold electric energy within the respective totalization periods each time the prescribed totalization period elapses based on the results of measurement made by the measurement means 2d, and an image data generation means 2f for together comparing intra-period sold electric energy found as to a plurality of totalization periods to generate image data for displaying a message showing the results of comparison while transmitting the image data to a terminal device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power monitoring system.

  Conventionally, the amount of commercial power consumed in each home or the like 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 that can measure the main power amount in the distribution board at home and monitor the measurement result on the web screen, and in this system, it can be compared with the power consumption of other homes (for example, , See Patent Document 1).

In recent years, a grid-connected system that sells surplus power by introducing a power generation system using a solar cell into a general household has been spreading.
Japanese Patent No. 3551302

  Usually, in a home, a main electric circuit is branched into a plurality of branch electric circuits via a branch breaker in a distribution board, and various electric devices are connected to each branch electric circuit. For example, one branch electric circuit is allocated to a plurality of electric devices (lighting fixtures and outlets) installed in one room, and recently, one electric device (for example, an air conditioner (air conditioner), a floor heater, and an IH device) Etc.) is assigned one branch circuit.

  However, in the system of Patent Document 1, the power consumption in each home is monitored in a lump, but the power consumption for each branch circuit is not grasped.

  In addition, some grid-connected systems using photovoltaic power generation display the amount of power generated or sold, but they simply display the amount of power generated or sold so far, and are sold during a predetermined counting period. The change in energy could not be displayed.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a power monitoring system capable of easily grasping a change in power generation amount for each predetermined counting period.

  In order to achieve the above object, the invention of claim 1 is provided in a main breaker to which a commercial power source is connected on the primary side, and a branch circuit that branches from the secondary side of the main breaker and supplies electric power to the electrical equipment. A plurality of branch breakers, an electric power consumption measuring unit that measures the electric usage supplied through each branch breaker for each branch breaker, and an electric power for each branch breaker based on the measurement results of the electric power consumption measuring unit. A terminal device for generating information on various electric usage amounts including usage amounts, and for transferring information between the control unit and displaying information on various electric usage amounts on the image display means according to operation inputs And a power converter that converts DC power input from the solar cell to AC and outputs it to the commercial system side, and a power converter provided between the secondary side of the main breaker and the output side of the power converter Connected to or disconnected from the commercial system A power generation amount measurement unit that measures the amount of power generated by the solar cell, and a control unit that measures the amount of power sold based on the measurement results of the power consumption measurement unit and the power generation amount measurement unit. Electricity measurement means, intra-period electricity sales calculation means for obtaining the electricity sales amount within each period for each aggregation period based on the measurement results of the electricity measurement means, and intra-period electricity sales during multiple aggregation periods Image data generation means for displaying a message indicating the comparison result by comparing the amount of electricity sold within the period calculated by the calculation means, and comprising image data generation means for transmitting the image data to the terminal device, and a terminal The apparatus is characterized in that the image data received from the control unit is displayed on the image display means.

  According to a second aspect of the present invention, in the first aspect of the invention, the control unit causes the image data generation means to transmit the image data displaying a message indicating the comparison result of the amount of power sold during the period to the terminal device, and A feature is that, when a certain time has elapsed after transmission, monitor screen data representing a monitor screen for displaying electricity usage is generated, and the monitor screen data is transmitted to the terminal device that transmitted the image data. To do.

  According to a third aspect of the present invention, in the first aspect of the present invention, in the first aspect, the terminal device generates a confirmation signal in response to an operation, and when the confirmation signal is generated by the operation means, the confirmation signal is transmitted to the control unit. A transmission unit, and the control unit receives the confirmation signal from the terminal device after transmitting the image data displaying the message indicating the comparison result of the in-period power sales amount from the image data generation unit, The present invention is characterized in that monitor screen data representing a monitor screen for displaying electricity usage is generated, and the monitor screen data is transmitted to the terminal device that has transmitted the confirmation signal.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the control unit includes a storage unit in which a plurality of types of messages including information related to energy saving are registered in advance. When the image data indicating the comparison result is not transmitted, message display image data for displaying a message registered in the storage unit is generated, and the message display image data is transmitted to the terminal device. Features.

  According to the first aspect of the present invention, the in-period electricity sales amount calculating means of the control unit obtains the in-period electricity sales amount in each aggregation period for each predetermined aggregation period, and the image data generating means is a period in a plurality of aggregation periods. Since the image data indicating the comparison result is generated by comparing the amount of electricity sold in the house and the image data is transmitted to the terminal device, the change in the amount of electricity sold during the period can be visually observed based on the image data displayed on the terminal device. It is effective that it can grasp easily.

  According to the second aspect of the present invention, even if the user does not intentionally perform any operation, the image display means of the terminal device can display the image data for a certain period of time and then switch to the monitor screen.

  According to the invention of claim 3, since the image data is displayed on the image display means until the user operates the operation means of the terminal device, the message for informing the change in the power sale amount for each counting period. Can be switched to the monitor screen by operating the operating means of the terminal device.

  According to the fourth aspect of the present invention, when the image data generating means has not transmitted the image data for displaying the message indicating the comparison result of the amount of electric power sold within the period, the control unit is connected to the image display means of the terminal device. Since the message registered in the storage means is displayed, the message registered in advance in the storage means can be provided to the user. If information related to energy saving is displayed as the message here, this information can be used to reduce the amount of electricity used. Further, if a seasonal message (such as the meaning of a calendar) or various event information is registered as the message, various information can be transmitted to the user using the terminal device.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 2, the power monitoring system of the present embodiment includes an integrated management panel 1 installed in the house, an electric line Lp for supplying commercial power, and an information transmission line Lj (enhanced category 5 or category 6 LAN cable). ) To the integrated management panel 1, and the integrated management panel 1 supplies a plurality of lighting devices, air conditioners (air conditioners), floor heaters, IH devices, etc. An electrical device Xmn (subscripts m and n are integers greater than or equal to 1. m, n = 1, 2,..., And so on) and a plurality of devices connected to the integrated management panel 1 via the LAN cable Li ( In the illustrated example, two terminal devices (terminal devices having a web browser function such as a personal computer PC and a display control device CV), a solar cell 50, and DC power input from the solar cell 50 are used. A power conditioner 51 to be output to the commercial system side into a flow, and a grid interconnection breaker 52, which interconnects or disconnection to the grid the power conditioner 51.

  In this system, the integrated management panel 1 and the terminal device constitute a home network using general-purpose communication protocols (TCP / IP, UDP, HTTP, etc.). This home network is a local area network (LAN) compliant with the 100BASE-TX (IEEE 802.3u) standard, and in the integrated management panel 1, an integrated device TM, which will be described later, corresponds to a layer 2 switch or a layer 3 switch. Terminal devices (personal computer PC and display control device CV) corresponding to network terminals are connected by star wiring. Further, the integrated device TM has an Internet connection function corresponding to the type of line for connecting to the Internet (telephone line, CATV line, optical fiber line, etc.), and the home network is connected to the Internet as an external network. The The display control device CV may be a net television having a web browser function.

  A center device (center server) SV installed at a remote location away from the house is connected to the home network through the Internet. As will be described later, a laptop personal computer, a mobile phone, By performing data communication via the Internet between a portable terminal device (portable terminal PT) having a web browser function such as a PDA (Personal Digital Assistance) and the center device SV, for example, using the portable terminal PT It is possible to control and monitor home electrical equipment from the outside.

  The center device SV is composed of a general-purpose computer device having a network function. The center device SV is a message addressed to the integrated management panel 1 transmitted from the portable terminal PT through the Internet, or a terminal device that does not belong to the home network from the integrated management panel 1 (see FIG. (Not shown) has a function of relaying a message transmitted to the destination. However, since the portable terminal PT and the center device SV having the Internet connection function as described above are well known in the art, the detailed illustration and description thereof are omitted.

  The solar battery 50 is a panel formed by arranging a large number of solar cells (elements that photoelectrically convert energy from sunlight and convert it into electrical energy), and is used as a DC power source.

  The power conditioner 51 includes an inverter and converts DC power generated by the solar cell 50 into AC power. The AC power converted by the power conditioner 51 is supplied to a plurality of electric devices Xmn serving as loads, and surplus power (electric power not consumed by the plurality of electric devices Xmn serving as loads) is purchased from the power company. Therefore, the power conditioner 51 has a function of converting DC power generated by the solar cell 50 into AC power so as to have substantially the same frequency, voltage, and phase as those of the commercial power supply. The power conditioner 51 includes an output voltage and output current detection unit (not shown), and also has a function of detecting the amount of power generated by the solar cell 50 based on the detection result of the output voltage and output current. . Here, the power conditioner 51 constitutes a power conversion unit and a power generation amount measurement unit.

  The interconnection breaker 52 is provided between the power conditioner 51 and a main breaker Bs, which will be described later, and supplies power from the power conditioner 51 to the commercial system, and the power from the power conditioner 51 becomes abnormal. In such a case (when a short circuit, ground fault, etc.), the power conditioner 51 is promptly disconnected to protect the safety on the system side.

  As shown in FIG. 1, the integrated management panel 1 has a main breaker Bs that receives commercial power supplied to the house from the outside on the primary side, and a plurality of branches that are inserted into the electric circuit branched from the secondary side of the main breaker Bs. A breaker Bmn (m = 1, 2,..., N = 1, 2,...), An energy management unit 2, an integrated device TM, and an electric device controller C1. And each electric circuit Lpmn (m = 1, 2, ..., n = 1,2, ...) branched via the branch breaker Bmn is led out of the integrated management panel 1, and is connected to each electric circuit Lpmn. Operation power is supplied to Xmn (m = 1, 2,..., N = 1, 2,...).

  The energy management unit 2 is supplied via the trunk breaker Bs by converting the measured value of the trunk current into the electric energy by the trunk current detection part CTs that periodically measures the trunk current value flowing through the trunk breaker Bs. And a branch current detector CTmn (m = 1, 2,..., N = 1) that periodically detects the value of the branch current flowing through each branch breaker Bmn for each branch breaker. , 2,..., The main power amount calculated by the power calculation unit 2a and the branch current measured by each branch current detection unit CTmn are input and supplied via each branch breaker Bmn based on each branch current. A calculation unit 2b for calculating the branch power amount, and image data representing the main power amount and each branch power amount based on the main power amount and the branch power amount input from the calculation unit 2b. And a control unit 2c for generating to the image data. The above-described main current detection unit CTs and the power calculation unit 2a constitute a used power amount measurement unit that measures the main power amount, and the branch current detection unit CTmn and the calculation unit 2b measure the branch power amount. A quantity measuring unit is configured.

  The control unit 2c stores in advance the data of the branch breaker Bmn that performs power amount detection (branch breaker name: branch 1, branch 2,..., Etc.), and the main power amount and branch power for each branch circuit. A function (web server) that creates web content (web page) as image data for displaying various amounts of electricity used, such as amounts, and provides (distributes) desired web content to the terminal device in response to a request from the terminal device The integrated device TM in the integrated management panel 1 and the electric device controller C1 are connected via a LAN cable. In this case, the control unit 2c stores, as data of the branch breaker Bmn, the name of the electric device connected to the branch breaker Bmn and the information on the place where it is used. In the case of a branch breaker provided individually for the circuit, the name of the corresponding device is stored. In addition, in the case of a branch breaker in which an unspecified electrical device may be connected instead of a single circuit, the name of the electrical device that may be connected to each branch breaker (for example, a lighting fixture, a television, a water heater) Etc.) and the main place of use, and the name of the electrical equipment (for example, hot carpet or iron) that the user is likely to use by connecting to each branch breaker and the place of use are set. preferable.

  Further, the control unit 2c determines whether it is in a power sale state or a power purchase state based on the power consumption input from the calculation unit 2b and the power generation amount input from the power conditioner 51, and the power sale state Power purchase amount measuring means 2d (power sale amount measurement means) that measures the amount of power purchase in the case of a power purchase state, and a predetermined counting period (for example, 1) based on the measurement result of the power sale power measurement means 2d. Intra-period sales power calculation means 2e (intra-period power sales calculation) for obtaining the intra-period electricity sales amount Ps or intra-period electricity purchase amount Pb in each counting period every day, week, month, month, or year. Means) and the intra-period power sales amount Ps or the intra-period power purchase amount Pb calculated by the intra-period sales power calculation means 2e in a plurality of counting periods, and image data for displaying a message indicating the comparison result. Image data generating means 2f for generating web content (web page) and transmitting (distributing) the image data (web page) to the terminal device TU via the integration device TM, and electricity connected to each branch breaker Bmn Device Xmn information (usage, installation location, stop branch current, etc.), energy-saving information, seasonal messages (calendar meaning, etc.) or multiple types of messages including various event information are registered in advance Storage means 2g.

  On the other hand, a plurality of rooms Rn (n = 1, 2,...) Such as a living room, a bedroom, and a child room are provided in the house, and the house includes three rooms R1, R2, and R3 in FIGS. As an example, an electric device provided in the room R1 is referred to as X1n, an electric device provided in the room R2 is referred to as X2n, and an electric device provided in the room R3 is referred to as X3n (n = 1, 2,...). Then, the branch breaker B1n (n = 1, 2,...) In the integrated management panel 1 is connected to each electric device in the room R1 via an electric circuit Lp1n (n = 1, 2,...) As shown in FIG. X1n is individually supplied with 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 electric circuit Lp3n (n = 1, 2,...). The branch breaker B20 supplies power to the plurality of electric devices X2n (n = 1, 2,...) In the room R2 through the electric circuit Lp20. The power is supplied collectively in correspondence with n. That is, the branch breakers B1n and B3n supply power for each electric device, and the branch breaker B20 supplies power for each room.

  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. 4 shows a detailed configuration around the main breaker Bs, the branch breaker Bmn, and the branch current detection unit CTmn, and is provided in the branch circuit Lp (consisting of the branch paths 12a and 12b) branched from the main breaker Bs and the main circuit 11. A plurality of sensors Smn (m = 1, 2,..., N = 1, 2,...) For detecting each branch current in the integrated management panel 1 including the branch breakers Bmn and the detection outputs of the sensors Smn. A plurality of sensor units Amn (m = 1, 2,..., N = 1, 2,...) That generate detection data, and branch current detection data are collected from each sensor unit Amn, and the collected detection data is detected as detection information. And a transmission path 6 for connecting the sensor unit Amn to the measurement control unit Ka in a chain shape, and exposed to the outside of the integrated management panel 1. And a display unit Kb for displaying detection information outputted from the provided measurement control unit Ka to the user. The sensor Smn, the sensor unit Amn, and the measurement control unit Ka constitute the above-described branch current detection unit 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 which is connected to a branch path 12a and one end of the main path 11 is connected to the neutral pole 11c of the branch path 12b.

  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 lines 12a and 12b are all formed from conductive metal plates, and the width, thickness, etc. of the main electric circuit 11 and the branch lines 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. 5, 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 7b penetrating through the printed circuit board 7 are formed so as to surround the through holes 7a in the periphery of each through hole 7a. 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 circuit 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. 5, the sensor S11 is a current sensor having a Rogowski coil composed of a coil line 20 formed on the printed circuit board 7, and outputs a differential form of current as a detection output. The coil line 20 is formed on a pattern 21a (shown by a solid line in FIG. 5) formed on the surface of the printed circuit board 7 through a through hole 7b in the periphery of the insertion hole 7a in the printed circuit board 7 and on the back surface of the printed circuit board 7. The coil portion 21 is formed by connecting a pattern 21b (shown by a dotted line in FIG. 5). Further, the end of the coil portion 21 is connected to one end side of a return line 22 (shown by a one-dot broken line in FIG. 5) through the through hole 7 c, and the other end side of the return line 22 is the end of the coil portion 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. 4, the transmission path 6 connects the sensor unit Amn to the measurement control unit Ka using three lines including 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 60 in the measurement control unit Ka and each sensor unit Amn. And used as a voltage reference for the data transmission line 61. 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 housing of the panel 1, the sensor Smn can be arranged efficiently. Further, 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 it can be reduced in size and weight, and there is an advantage that there is no saturation due to the iron core. Thus, it is possible to obtain a current sensor having a wide dynamic range and capable of detecting a large current.

  FIG. 6 shows another structure of the sensor Smn, which includes a toroidal coil 31 formed on the printed circuit board 7. The toroidal coil 31 includes 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, which are the same printed circuit board 7. Doubled on top and connected in series. Each of the advance coil 32 and the return coil 33 includes a radial line 34 formed radially from the insertion hole 7a for the branch path 12b penetrating the printed circuit board 7 on the front and back surfaces of the printed circuit board 7, and the plurality of radial lines. 34 are formed by connecting portions 35 provided on the front and back surfaces at equal intervals on the outer periphery connecting the 34, and through holes 36 that electrically connect the radial lines 34 and the connecting portions 35 on the front and back surfaces. In FIG. 6, these radial lines 34 and connecting portions 35 are formed on the front surface side of the printed circuit board 7 with thick solid lines, and those formed on the back surface side with white solid lines (double lines), respectively. Show.

  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 the connecting portion between the two coils. The front side and the back side 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 far from and close 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 through holes 36c and 36d are arranged symmetrically with respect to a straight line connecting the through holes 36a and 36b. Further, 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 specific because of restrictions on the production of the printed circuit board (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 connecting 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 connecting portion 35, for example, the return coil 33 indicates the through hole 36 c or 36 d, and the advance coil 32 has the return coil 33. Of the lead coil 32 corresponding to the through-hole 36c or 36d of the lead coil 32 extending in the circumferential direction, and electrically connects the plurality of radial lines 34 to each other. 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 connecting portion 35 is formed so as to avoid the adjacent radial line 34, and the coil pattern by the connecting 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. Yes. With the above configuration, the conductor portion (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. In the current measurement using the sensor Smn, the conductor to be measured through which the current to be measured flows is passed through the insertion hole 7a, and the magnetic flux of the magnetic field due to this current is generated by passing through the cross-sectional areas of both the coils 32 and 33. The induced current will be detected.

  FIG. 7 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.

  Next, the integrated device TM in FIG. 1 is connected to the control unit 2c in the panel, the electrical device controller C1, the personal computer PC outside the panel, and the display control device CV via a LAN cable, and the center device SV and the like via the Internet. It is connected to a portable terminal PT such as a cellular phone or other terminal device, and has packet processing function, path switching function, network security function, UPnP (Universal Plug and Play) control point function, etc. In this way, data transmission / reception in the network is controlled.

  Further, as shown in the block diagram of FIG. 8, the above-described terminal device TU includes a transmission / reception unit 71 that exchanges data with the integrated device TM, and an image display unit 72 that includes a touch panel such as a liquid crystal display with a touch switch. And a control unit 73 that performs overall control of the transmission / reception unit 71, the image display unit 72, and the like.

  Further, the electric device controller C1 in FIG. 1 has an interface function with the integrated device TM and an interface function with the electric device Xmn conforming to the Japan Electric Manufacturers Association (JEMA) unified standard. When the electric device controller C1 receives a control request message from the terminal device TU via the integrated device TM, the electric device controller C1 individually controls each electric device Xmn via the information transmission path Lj and operates (in the case of a lighting fixture). Is switched on and off (in the case of lighting fixtures) a function (control function), and when a monitoring request message is received from the terminal device TU via the integrated device TM, each electric power is transmitted via the information transmission path Lj. The terminal which is the source of the request message and obtains the operation status (operation [lit] or stop [extinction]) of the device Xmn individually, and the response to the control request and the monitoring request (operation status of each electrical device Xmn) It has a function (monitoring function) for transmitting to the device TU via the integrated device TM. In addition, the electric device controller C1 stores in advance device name information of the electric device Xmn under its control, name information of the room Rn, etc., and displays the name and operation state of the electric device Xmn with characters and symbols. It also has a function (web server function) for creating web content (web page) and providing (distributing) the web content to the terminal device TU in response to a request from the terminal device TU.

  Incidentally, FIG. 9 shows an example of a screen displayed on the display screen 72a when the terminal device TU is started up or in a state where the terminal device TU is switched to the top screen of the control panel. The title bar TB indicating the panel) is displayed, and on the lower side thereof, the operation / stop state of each electric device Xmn is switched to a preset state in accordance with each scene of “at home”, “outing”, and “good night” Scene selection buttons B1, B2, and B3 are displayed. Below the scene selection buttons B1, B2, and B3, a display unit W1 that displays information distributed from the center device SV (for example, weather forecasts in the surrounding area) with pictures and characters is arranged. The page includes a previous page button B4 and a next page button B5 for shifting to the previous page or the next page, and a menu button B6 for shifting to the menu screen.

  Then, when the user touches the menu button B6 on the initial screen of FIG. 9, the control unit 73 of the terminal device TU controls the transmission / reception unit 71 to transmit a display request for the menu screen to the integrated device TM. Upon receiving the menu screen display request transmitted from the terminal device TU, the integrated device TM returns a web page for displaying the menu screen to the terminal device TU that is the transmission source of the display request, and the terminal device TU The web page received by the transmission / reception unit 71 is displayed on the display screen 72 a of the image display unit 72. 10A and 10B show an example of a menu screen displayed on the display screen 72a of the image display unit 72 of the terminal device TU. Title bars TB1 and TB2 for displaying screen names (for example, “menu (1/2)” and “menu (2/2)”) are displayed on the upper side of the menu screen, and a desired menu is selected in the center of the screen. Menu selection buttons (selection buttons BT1 to BT4 on the screen of FIG. 10A, selection buttons BT5 and BT6 on the screen of FIG. 10B), and the previous page that transitions to the previous page or the next page at the bottom of the screen Button BT7 and next page button BT8 are respectively displayed. Each menu selection button BT1 to BT6 is displayed with characters (“remote control”, “wireless remote control”, “eco monitor”, etc.) indicating the contents of the corresponding menu, and the next page button BT8 is displayed on the screen of FIG. When the touch operation is performed, the display screen of the image display unit 72 is switched to the menu screen of FIG. 7B through the same processing as described above, and when the previous page button BT7 is further touched on the screen of FIG. The display screen of the image display unit 72 can be switched to the menu screen shown in FIG.

  In the power monitoring system of the present embodiment, the menu of FIG. 10A displayed on the image display unit 72 in the terminal device TU such as the personal computer PC in the house, the display control device CV, or the portable terminal PT connected to the Internet. When the user performs a touch operation on the selection button BT3 for selecting the eco monitor screen on the screen, the control unit 71 sends a power real monitor request from the transmission / reception unit 71 to the energy management unit 2 via the integrated device TM according to the touch operation. When the control unit 2c of the energy management unit 2 receives the power real monitor request via the integrated device TM when the message is transmitted, the control unit 2c receives the main power amount input from the calculation unit 2b and the branch power for each branch breaker Bmn. Based on the amount of power, the main power and the current value of branch power for each branch breaker Bmn It generates image data for power real monitor for displaying, via the integrating device TM image data generated power real monitor, and transmits to the terminal device TU that has transmitted the power real monitoring request.

  In the terminal device TU that has received the power real monitor image data, the control unit 73 controls the display of the image display unit 72 to display the power real monitor image data on the display screen of the image display unit 72. It is possible to monitor the current value of the power amount and the branch power amount for each branch breaker Bmn. FIG. 11A is an example of a power real monitor image displayed on the display screen 72a of the image display unit 72 of the terminal device TU. In the power real monitor screen (energy management top screen) of FIG. 11A, a title bar TB3 indicating the name of the screen (for example, “Eco-monitor (1/2)”) is displayed at the upper side of the screen, and at the center of the screen. The display unit SY1 that shows the electricity charges for the current month (data of yesterday and today) and the pictogram P1 that shows the electric equipment that consumed the most electricity yesterday are displayed. A next page button BT9 and a menu button BT10 for transition are respectively displayed.

  By the way, the electric device Xmn connected to the branch breaker Bmn is not only one that consumes zero power when stopped, such as a lighting fixture, but also one that generates standby power even when stopped, such as a television or an air conditioner. Some of them are always working without stopping, such as refrigerators. Therefore, even when the electric device Xmn is in a stopped state, a branch current may flow through the branch breaker Bmn to which the electric device Xmn is connected. Therefore, for each branch breaker Bmn, the power supply of the electric device connected to the branch breaker A branch current in a stop state with the switch turned off (hereinafter referred to as a stop-time branch current) is set in advance. In addition, when the branch breaker Bmn is connected to the outlet in the room Rn, various electric devices may be connected to the outlet. Therefore, the branch current when the branch circuit is stopped is the stop state of the electric device. The sum of the standby current consumed by the electric current and the operating current of an electric device such as a refrigerator that does not normally stop.

  Therefore, in the terminal device TU, by operating a setting screen (not shown), the branch current setting image at the time of the setting target branch breaker Bmn is displayed, and the power switch of the electric device connected to the target branch breaker Bmn is turned on. When the setting button displayed on the screen is touch-operated in a state where it is turned off (except that it is always in an operating state such as a refrigerator), the control unit 73 of the terminal device TU receives energy management from the transmission / reception unit 71. The unit 2 is caused to transmit a setting request signal for setting a branch current when the branch breaker Bmn to be set is stopped. At this time, when the control unit 2c of the energy management unit 2 receives the stop branch current setting request signal via the integrated device TM, the detection value of the branch current of the setting target branch breaker Bmn is obtained via the calculation unit 2b. Then, the branch current detection value is set in the storage means 2g as a branch current when the branch breaker Bmn is stopped (amount of electricity used when stopped). This process is performed for all branch breakers Bmn, and a stop-time branch current is set for each branch breaker Bmn.

  Also, once the stop branch current of each branch breaker Bmn is set by the controller 2c, the stop branch current is updated by executing the processing described below. In the control unit 2c, the branch current detection value of the setting target branch breaker Bmn registered in the storage unit 2g and the current stop branch current are sequentially compared, and the branch current detection value is determined from the stop branch current. If the branch current detection value is equal to or greater than the stop branch current, the branch current detection value at this time is set to the storage means 2g. The stop branch current can be set to an appropriate value at any time.

  The control unit 2c acquires the branch current detection value for each branch breaker Bmn via the calculation unit 2b, and the branch current detection value of each branch breaker Bmn and the branch breaker Bmn read from the storage unit 2g. When the difference obtained by subtracting the stop branch current value from the branch current detection value is equal to or greater than a certain value, the one or more electrical devices Xmn connected to the branch breaker Bmn When it is determined that the operating state is present and the difference obtained by subtracting the steady branch current value from the branch current detection value is smaller than a certain value, it is determined that the electrical device Xmn connected to the branch breaker is in a stopped state.

  Further, data indicating the current power generation amount by the solar cell 50 is input from the power conditioner 51 to the control unit 2c of the energy management unit 2, and the power purchase / purchase power measuring means 2d receives the power generation amount data and the calculation unit 2b. Based on the amount of power used for each branch breaker Bmn input from, it is determined that the power is sold if the amount of power generation exceeds the amount of power used, and the state of power purchase if the amount of power generation is less than the amount of power used. In the power sale state, the difference obtained by subtracting the used power amount from the power generation amount is obtained as the power sale amount. In the power purchase state, the difference obtained by subtracting the power generation amount from the used power amount is obtained as the power purchase amount.

  Moreover, the control part 2c is provided with the time measuring part (not shown) which time-measures the present time, and based on the time measurement result and the measurement result of the electric power sales measurement means 2d, the electric power sales calculation means 2e within a period is predetermined. Each time the total period elapses, the power sales amount and the power purchase amount in each total period are integrated, and the integration results (power generation amount, power purchase amount Ps within period and power purchase amount Pb within period) are stored in the storage means 2g. It has become.

  As described above, the control unit 2c obtains the in-period electricity sales amount Ps and the in-period electricity purchase amount Pb in each aggregation period every time a predetermined aggregation period elapses, and stores it in the storage unit 2g, but the image data generation unit 2f. Then, the in-period electricity sales amount and the in-period electricity purchase amount in a plurality of (for example, two consecutive) aggregation periods are read from the storage unit 2g, respectively, and the read in-period electricity sale amount Ps or in-period electricity purchase amount Pb is compared, respectively. Image data for displaying a message indicating the comparison result is generated, and the image data is transmitted to the terminal device TU. For example, when the intra-period trading power calculation means 2e obtains an integrated value of the electric power sales amount and the electric power purchase amount every day (electrical power sales amount Ps within the period and electric power purchase amount Pb within the period), the image data generation means 2f has a predetermined time every day. Then, the storage unit 2g reads out the electricity sales amount Ps2 in the previous day and the electricity sales amount Ps1 in the previous day, compares them, and generates image data for displaying a message indicating the comparison result. The generated image data is transmitted to the terminal device TU via the integration device TM.

  In the terminal device TU, the screen of FIG. 9 is switched to the top screen of the control screen, the screen of FIG. 10 is switched to the menu screen, and the screen of FIG. When the image data for displaying the above message is transmitted from the energy management unit 2 while these screens are displayed, the sub screens for displaying the above message are overlapped. Display (pop-up display), and the user can be informed of the result of comparing the amount of electricity sold within two periods in two consecutive counting periods. FIG. 11B is an example of a screen that displays a message indicating the comparison result. If yesterday's intra-period electricity sales amount Ps2 increases by more than a predetermined threshold (for example, x% of yesterday's intra-period electricity sales amount Ps1) compared to yesterday's intra-period electricity sales amount Ps1, a message to that effect is displayed. For example, the sub-screen G1 displays a message M1 such as “A lot of power was generated yesterday” and a confirmation button BT11 for performing a confirmation operation. By displaying such a message M1 on the terminal device TU, in order to increase the amount of power sold, the user can be enlightened to suppress the amount of power used by the electrical device Xmn, and energy saving and the amount of power purchased can be suppressed. Can do. In the above example, the amount of electricity sold Ps1 within the period of the day before the previous day and the amount of electricity sold Ps2 within the period of the previous day are compared. When the amount of electricity sold Ps within the period is compared on a daily basis, the weather is stable every day. An accurate comparison can only be made during a certain period. However, even if the weather is not stable every day, the amount of power generated by the solar cell 50 decreases and the amount of electricity sold decreases or the amount of electricity purchased increases on bad days. It is possible to give the user consciousness and help to raise energy conservation. Note that the period for comparing the amount of electricity sold within the period and the content of the message to be displayed are not limited to the above form, but multiple (two or more) aggregation sections that are continuous in units of weeks, months, or months The amount of electricity sold during the period may be compared, and a message for displaying the comparison result may be set appropriately according to the content to be presented to the user. Further, the message M1 indicating the comparison result of the amount of electricity sold during the period is not limited to the above contents, and may be set as appropriate according to the period and result to be compared. You may make it display on a screen.

  Here, when the user confirms the content of the message M1 and performs a touch operation on the confirmation button BT11 as an operation unit, the control unit 73 of the terminal device TU displays a confirmation signal generated according to the operation of the confirmation button BT11. The data is transmitted from the transmission / reception unit 71 serving as a transmission unit to the energy management unit 2 via the integrated device TM. At this time, the control unit 2c of the energy management unit 2 receives the confirmation signal transmitted from the terminal device TU, generates power real monitor image data for displaying electricity usage, and generates the generated power real monitor image. Since the data is transmitted to the terminal device TU that is the transmission source of the confirmation signal, the terminal device TU can close the sub-screen G1 and switch to the power real monitor screen. In this case, until the user operates the confirmation button BT11 displayed on the display screen of the terminal device TU, the above-described sub-screen G1 is displayed as a pop-up, and thus the user may miss the display of the sub-screen G1. In addition, it is possible to switch to the power real monitor screen by touching the confirmation button BT11 of the terminal device TU.

  By the way, in this system, when a predetermined counting period elapses, the control unit 2c of the energy management unit 2 compares the amount of electric power sold in the period in a plurality of counting periods, and the image data of the sub-screen G1 that displays a message indicating the comparison result is displayed. It is transmitted from the image data generating means 2f to the terminal device TU via the integration device TM and displayed on the image display unit 72 of the terminal device TU. After that, when the control unit 2c receives a confirmation signal transmitted from the terminal device TU in response to an operation on the terminal device TU, the control unit 2c switches the display screen of the terminal device TU to a power real monitor screen that displays the amount of electricity used. However, when a certain period of time has elapsed since the image data of the child screen G1 was transmitted to the terminal device TU, power real monitor image data is generated and the image data is transmitted to the child screen via the integration device TM. You may make it transmit to the terminal device TU which transmitted the image data of G1. In this case, even if the user does not intentionally perform any operation, a message indicating the comparison result of the in-period electricity sales amount Ps is displayed on the image display unit 72 of the terminal device TU for a certain period of time, and then the electricity usage amount is displayed. Since the display is switched to the monitor screen to be displayed, various types of electricity usage can be continuously monitored.

  Still further, the control unit 2c of the energy management unit 2 is registered in advance in the storage unit 2g when image data for displaying a message indicating the comparison result of the in-period power sales amount Ps is not transmitted to the terminal device TU. Select and read an arbitrary message from multiple types of messages (for example, information related to energy saving, seasonal messages, and various event information), and generate message display image data to display the read messages. The message display image data may be transmitted to the terminal device TU via the integrated device TM. FIG. 11C shows an example of message display image data. A small screen G2 including the message M2 and the screen title TL1 is displayed in a pop-up on the image display unit 72, and the message M2 is presented to the user. Thus, information useful for energy saving, messages such as seasonal messages (such as the meaning of the calendar), and various event information can be transmitted to the user. In addition, although the case where image data of the sub-screen G2 is transmitted from the control unit 2c of the energy management unit 2 has been described, the contents of the sub-screen G2 (for example, a ranking that compares the amount of electricity used with other dwelling units is displayed. In some cases, the image data of the child screen G2 may be transmitted from the center device SV to the terminal device TU via the integration device TM.

  When the user performs a touch operation on the confirmation button BT12 while the sub-screen G2 is displayed, a confirmation signal generated in response to the operation of the confirmation button BT12 is transmitted from the terminal device TU via the integrated device TM. 2, the control unit 2 c receives the confirmation signal transmitted from the terminal device TU, generates power real monitor image data, and transmits the power real monitor image data to the terminal device TU via the integration device TM. Therefore, the display of the child screen G2 can be terminated and switched to the power real monitor screen.

  Further, when the user operates the terminal device TU to request a screen for monitoring the power generation state of solar power generation and the amount of power used, the control unit 2c responds to a request from the terminal device TU as shown in FIG. A web page is created as image data for displaying a monitor screen as shown in FIG. 5 and is transmitted to the terminal device TU that has transmitted the monitor request via the integration device TM. FIG. 12A is an example of a photovoltaic power generation monitor image displayed on the display screen 72a of the image display unit 72 of the terminal device TU, and the name of the screen (“photovoltaic power generation monitor”) is shown on the upper side of the screen. A title bar TB4 is displayed, and a pictogram P2 indicating today's weather is displayed on the lower right of the title bar TB4 based on weather information distributed from the center device SV. In the center of the screen, displays M3 and M4 indicating the current power consumption (electric consumption) and today's power consumption, and displays M5 and M6 indicating the current power generation and today's power generation, A display M7 indicating the amount of power sold or purchased today is displayed respectively, and a power generation transition button BT14 for switching to a screen indicating a power generation transition at the bottom of the screen, and a return button BT15 for returning to the screen of FIG. And are displayed. This solar power generation monitor screen displays the current electricity consumption (consumption), power generation, today's electricity usage, power generation, purchased power, etc. The amount of electricity used and the amount of power generated can be ascertained.

  Further, when the user touches the power generation transition button BT14 in a state where the screen of FIG. 12A is displayed on the image display unit 72 of the terminal device TU, the energy management unit is connected from the terminal device TU via the integrated device TM. A power generation transition display request is transmitted to 2. At this time, the control unit 2c of the energy management unit 2 reads the power generation amount stored in the storage unit 2g in response to a display request from the terminal device TU, for example, image data (web Page) and the image data is transmitted to the terminal device TU that is the transmission source of the display request via the integrated device TM. FIG. 12B is an example of a screen for displaying the yesterday and today's power generation results in a graph. A title bar TB5 indicating the name of the screen (today and yesterday's power generation results) is displayed on the upper side of the screen, and the center of the screen is displayed. Is displayed with a graph G3 indicating the power generation results, and a previous page button BT16, a next page button BT17, and a return button BT18 are displayed on the lower side of the screen. In addition, the broken line a in the graph G3 is yesterday's power generation performance, the solid line b is today's power generation performance, and shows the change in power generation performance in the time zone from 6 am to 6 pm.

  Further, when the next page button BT17 is touch-operated in a state where the screen of FIG. 12B is displayed on the image display unit 72 of the terminal device TU, between the terminal device TU and the control unit 2c of the energy management unit 2. The same processing as described above is performed, and a screen showing the power generation performance of this month and last month is displayed on the image display unit 72 of the terminal device TU. FIG. 12C is an example of a screen that displays the power generation results of this month and last month as a graph. A title bar TB6 indicating the name of the screen (power generation results of this month and last month) is displayed on the upper side of the screen. Is displayed a graph G4 indicating the power generation results. In addition, the broken line c in the graph G4 is the power generation result of last month, the solid line d is the power generation result of this month, and the power generation result every day is displayed as a line graph.

  Furthermore, when the next page button BT17 is touched in a state where the screen of FIG. 12C is displayed on the image display unit 72 of the terminal device TU, between the terminal device TU and the control unit 2c of the energy management unit 2. The same processing as described above is performed, and a screen showing the power generation results of this year and last year is displayed on the image display unit 72 of the terminal device TU. FIG. 12 (d) is an example of a screen that displays the power generation results for this year and last year. A title bar TB7 indicating the name of the screen (power generation results for this year and last year) is displayed on the upper side of the screen. A graph G5 indicating the power generation performance is displayed. In addition, the broken line e in the graph G5 is the power generation result of last year, the solid line f is the power generation result of this year, and the monthly power generation result is displayed in a line graph.

  As described above, in this system, the control unit 2c of the energy management unit 2 displays a graph for comparing the power generation amounts in a plurality of total periods (for example, two consecutive total periods) according to the operation of the terminal device TU. Since the page is generated and transmitted to the terminal device TU via the integrated device TM, the user visually grasps the transition of the power generation amount based on the graph displayed on the image display unit 72 of the terminal device TU. You can also

  In the above-described embodiment, the terminal device TU has a touch panel, and a desired operation is performed by touching a switch displayed on the screen. However, the operation means is limited to the touch switch. Instead, a desired operation may be performed using an operation unit provided in the main body of the terminal device TU, and when the terminal device TU is a television, a desired operation may be performed using a television remote controller. good.

It is a block diagram which shows each structure of the power monitoring system of this embodiment. It is a system diagram which shows a structure same as the above. It is a wiring diagram of the electric equipment in a house 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 block diagram of a terminal device same as the above. It is an example figure of the display screen of a terminal device same as the above. (A) (b) is an example figure of a display screen of a terminal unit same as the above. (A)-(c) is an example figure of the display screen of a terminal device same as the above. (A)-(d) is an example figure of the display screen of a terminal device same as the above.

Explanation of symbols

2 Energy management unit 2b Calculation unit (Power consumption measurement unit)
2c Control unit 2d Trading power measurement means 2e Trading power calculation means within period 2f Image data generation means 2g Storage means 50 Solar cell 51 Power conditioner 52 Link breaker 72 Image display section (image display means)
TU terminal device CTmn Branch current detector (power consumption measuring unit)
CV display control device PC PC PT Mobile terminal Bs Main breaker Bmn Branch breaker Lpmn Electric circuit (branch circuit)
Xmn electrical equipment

Claims (4)

Supply via the main breaker connected to the commercial power source on the primary side, multiple branch breakers each provided on the branch circuit that branches from the secondary side of the main breaker and supplies power to the electrical equipment, and each branch breaker Power consumption measurement unit that measures the amount of electricity used for each branch breaker, and control that generates information on various types of electricity usage including the amount of electricity used for each branch breaker based on the measurement results of the power consumption measurement unit The terminal device that exchanges information between the control unit and the control unit and displays various types of electricity usage information on the image display means according to the operation input, and converts the DC power input from the solar cell into AC. A power conversion unit that outputs to the commercial system side, and an interconnection breaker that is provided between the secondary side of the main breaker and the output side of the power conversion unit, and connects or disconnects the power conversion unit to the commercial system. Prepared,
A power generation amount measuring unit for measuring the power generation amount of the solar cell, a power sale amount measuring means for measuring a power sale amount based on the measurement results of the power consumption measurement unit and the power generation amount measurement unit, and a power sale amount measurement are provided in the control unit. Based on the measurement results of the means, the amount of electricity sold within the period for determining the amount of electricity sold within each period during each aggregation period, and the period calculated by the means for calculating electricity sold within the period during multiple aggregation periods Image data for displaying a message indicating a comparison result by comparing the amount of electricity sold in the house, and including image data generation means for transmitting the image data to the terminal device,
The terminal device causes the image display unit to display the image data received from the control unit.   The control unit causes the image data generating means to transmit the image data for displaying a message indicating the comparison result of the amount of power sold within the period to the terminal device, and when a certain time has elapsed since the image data was transmitted, 2. The power monitoring system according to claim 1, wherein monitor screen data representing a monitor screen for displaying a quantity is generated, and the monitor screen data is transmitted to the terminal device that transmitted the image data.   The terminal device is provided with an operation unit that generates a confirmation signal in response to an operation, and a transmission unit that transmits the confirmation signal to the control unit when the confirmation signal is generated by the operation unit. When the confirmation signal is received from the terminal device after transmitting the image data displaying the message indicating the comparison result of the amount of electricity sold during the period from the data generation means to display the amount of electricity used The power monitoring system according to claim 1, wherein monitor screen data representing a monitor screen is generated, and the monitor screen data is transmitted to the terminal device that has transmitted the confirmation signal.   The control unit has a storage means in which a plurality of types of messages including information related to energy saving are registered in advance, and when the image data displaying the message indicating the comparison result of the amount of power sold within the period is not transmitted, 4. The message display image data for displaying a message registered in the storage means is generated, and the message display image data is transmitted to the terminal device. The power monitoring system described in 1.

Images