JP2013181958A - Branch circuit connection determination system of panel board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To specify correspondence of connection between respective branch circuits and respective dedicated devices.SOLUTION: A power consumption display device 160 can specify correspondence of connection between the respective branch circuits and the respective dedicated devices by recognizing power consumption of dedicated devices 131-134 which are connected to branch circuits 1-4 on the basis of a branch circuit power load means correspondence table describing correspondence between the branch circuits 1-4 and the dedicated devices 131-134 which are connected to each of the branch circuits, which is stored in a memory unit 161, and the power consumption in the branch circuits 1-4, calculated by current measurement means 150, and determining whether or not the recognized power consumption of the dedicated devices 131-134 which are connected the branch circuits 1-4 matches to a power consumption model which regulates trends of the power consumption of the dedicated devices 131-134 for every type of the dedicated devices 131-134 and is stored in the memory unit 161.

Description

  The present invention relates to a system for confirming a correspondence relationship between a branch circuit of a distribution board and a dedicated device connected to the branch circuit, and in particular, a dedicated circuit connected to each of the branch circuits of the distribution board. The present invention relates to a branch circuit connection determination system for a distribution board that can determine whether or not a device is predetermined.

  The distribution board has a plurality of branch breakers for each power supply destination of the building, and a plurality of branch circuits are laid for each power supply destination from these branch breakers to supply power.

  These branch circuits are generally provided with an outlet at the end, but without an outlet at the end, only a dedicated device with high power consumption is directly connected to the branch circuit. Not a few.

  The dedicated device is, for example, an air conditioner, an IH cooker in the kitchen, an electric water heater such as Ecocute (registered trademark), or a vehicle such as EV (Electric Vehicle), HV (Hybrid Vehicle), or PHV (Plug-in Hybrid Vehicle). A vehicle charger or the like that is electrically connected to the vehicle and supplies power to the vehicle.

  Since these dedicated devices consume a large amount of power, it is not preferable to share power with other devices in the same branch circuit. Therefore, only one dedicated device is directly connected to one branch circuit.

  Recently, from the viewpoint of energy saving, the power consumption of a dedicated device connected to each branch circuit is displayed on a display device such as a display.

  FIG. 6 is a diagram illustrating an example in which the power consumption of the dedicated device connected to each branch circuit is displayed on the display device. In order to display the power consumption of each dedicated device as shown in FIG. 6, the correspondence relationship between each branch circuit and each dedicated device is stored in advance in the storage means of the power consumption display device 160 and stored. The power consumption of each dedicated device is determined based on the correspondence relationship between each branch circuit and each dedicated device and the power consumption measured by each branch circuit.

  However, if the actual connection between each branch circuit and each dedicated device does not match the stored correspondence relationship between each branch circuit and each dedicated device, the power consumption of each dedicated device is not accurately determined. Display is impossible.

  In that case, it is necessary to re-specify the connection between each branch circuit and each dedicated device, and to modify the stored correspondence relationship between each branch circuit and each dedicated device according to the actual connection.

  However, when a dedicated device as described above is directly connected to the branch circuit, each branch circuit passes through a concealed portion such as the back of the ceiling, and the connection to each dedicated device is identified by following each branch circuit. It is not possible.

  Therefore, it is conceivable to specify the connection between the branch circuit and the dedicated device from the power consumption of the dedicated device.

  Therefore, various techniques for determining whether or not the accumulated power amount is expected to exceed the target value have been proposed.

  For example, in the technology described in Patent Document 1, it is determined whether or not the accumulated power amount is expected to exceed the target value by determining whether or not the actual value of the accumulated power amount exceeds a determination threshold value, It has been proposed to notify the determination result.

JP 2010-223628 A

  However, in the technique described in Patent Document 1, it is determined whether or not the accumulated power amount is expected to exceed the target value by determining whether or not the actual value of the accumulated power amount exceeds the determination threshold. There was a problem that the connection between the branch circuit and the dedicated device could not be specified.

  The present invention has been made in consideration of the above-mentioned facts, and the branch of the distribution board that can determine whether or not the dedicated device connected to each of the branch circuits of the distribution board is predetermined. An object is to provide a circuit connection determination system.

  In order to achieve the above object, the invention according to claim 1 is provided in each of a plurality of branch circuits included in the distribution board, and a plurality of energization current detection means for detecting the current values of the energization currents of the plurality of branch circuits. Current measuring means for calculating the power consumption of each of the plurality of branch circuits from the current value detected by each of the plurality of energized current detection means, connected to each of the branch circuits and each of the branch circuits. A branch circuit power load means correspondence relationship related to the corresponding power load means and a power consumption model that prescribes the power consumption trend of the power load means for each type of power load means, Storage means for storing the power consumption in each branch circuit calculated by the current measurement means, the branch circuit power load means correspondence relationship stored in the storage means, and the current measurement means calculated Recognizing the power consumption of the power load means connected to each of the plurality of branch circuits based on the power consumption in each of the plurality of branch circuits, and connecting to each of the recognized plurality of branch circuits Determination means for determining whether or not the power consumption of the power load means being matched with a power consumption model stored in the storage means, and display means for displaying a determination result by the determination means, It is characterized by providing.

  According to the first aspect of the present invention, the energization current detection means detects the current value of the energization current of each branch circuit by being provided in each branch circuit in the distribution board.

  The current measurement means calculates the power consumption in each branch circuit based on the current value detected by the energization current detection means.

  The storage means is a branch circuit power load that associates the correspondence of each branch circuit with a dedicated device such as an air conditioner, IH cooker, electric water heater, or vehicle charger that is a power load means connected to each branch circuit. A means correspondence table is stored in advance, and a power consumption model that prescribes the tendency of power consumption of each dedicated device for each type of dedicated device is stored in advance.

  The storage means stores the power consumption in each branch circuit calculated by the current measurement means.

  The determination means is connected to each of the plurality of branch circuits based on the branch circuit power load means correspondence table stored in the storage means and the power consumption in each of the plurality of branch circuits calculated by the current measurement means. Recognize the power consumption of dedicated equipment.

  Further, the determination unit determines whether or not the power consumption amount of the dedicated device connected to each of the plurality of branch circuits matches the power consumption model stored in the storage unit.

  The display means is a display device such as an LCD (Liquid Crystal Display) that displays the result determined by the determination means.

  As in the invention described in claim 2, the display means displays the power consumption of the power load means connected to each of the plurality of branch circuits recognized by the determination means, and the If it is determined that the power consumption of the power load means connected to each of the recognized branch circuits does not match the power consumption model stored in the storage means, the mismatch branch circuit and An error may be displayed for the power load means. Thereby, it is possible to notify when there is an error in the connection between the branch circuit and the dedicated device.

  According to a third aspect of the present invention, the determination means includes a power of the power load means connected to each of the recognized branch circuits for a predetermined number of times or more within a predetermined period. When it is determined that the consumption does not match the power consumption model stored in the storage means, an error determination is made for the branch circuit and the power load means that do not match, and the display means displays the error determination. May be. As a result, it is possible to more strictly determine whether or not the connection between the branch circuit and the dedicated device is appropriate, and to notify the determination result.

  According to a fourth aspect of the present invention, the storage unit stores a time-series power consumption amount in a predetermined period among time-series power consumption amounts of the branch circuits calculated by the current measurement unit. The determination means is based on the time-series power consumption of each branch circuit stored in the storage means and the branch circuit power load means correspondence relationship stored in the storage means. The power load means connected to each of the plurality of branch circuits recognizes power consumption in time series in the predetermined period, and is connected to each of the recognized plurality of branch circuits You may make it determine whether the power consumption in the time series of the said power load means corresponds to the power consumption model memorize | stored in the said memory | storage means. As a result, waste of the storage area in the storage means can be prevented.

  In addition, as in the fifth aspect of the invention, the predetermined period may be at least one day, thereby enabling determination based on the power consumption of the dedicated device over a period of one day or more.

  In addition, as in the invention described in claim 6, the predetermined period may be changeable according to the season, whereby the power usage amount of the dedicated device having a different use frequency according to the season such as an air conditioner. It is possible to make a determination in consideration of

  As described above, according to the present invention, there is provided a distribution board branch circuit connection determination system capable of determining whether or not the dedicated device connected to each of the distribution board branch circuits is predetermined. Can be provided.

It is the schematic which shows an example of the branch circuit connection confirmation system of the distribution board which concerns on embodiment of this invention. It is a figure which shows an example of the power consumption in each branch circuit memorize | stored in the memory unit of the branch circuit connection confirmation system of the distribution board which concerns on embodiment of this invention. It is a figure which shows an example of the branch circuit power load means correspondence table memorize | stored in the memory unit of the branch circuit connection confirmation system of the distribution board which concerns on embodiment of this invention. It is a figure which shows an example of the power consumption model memorize | stored in the memory unit of the branch circuit connection confirmation system of the distribution board which concerns on embodiment of this invention. It is a flowchart which shows the process of the branch circuit connection confirmation system of the distribution board which concerns on embodiment of this invention. It is a figure which shows an example which is displaying on the display apparatus the power consumption of the dedicated apparatus connected to each branch circuit.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a branch circuit connection confirmation system 10 for a distribution board according to the present embodiment.

  In FIG. 1, the grid power supplied from the power company is supplied to the distribution board 120 via the main breaker 100.

  The distribution board 120 includes a plurality of branch breakers 121 to 124, the branch breaker 121 to the branch circuit 1, the branch breaker 122 to the branch circuit 2, the branch breakers to 123 to the branch circuit 3, and the branch breaker 124 to branch. Each corresponds to the circuit 4.

  A dedicated device is connected to each of the branch circuits 1 to 4. For example, an air conditioner 131 is connected to the branch circuit 1, an electric water heater 132 is connected to the branch circuit 2, and an IH cooker 133 is connected to the branch circuit 3. A vehicle charger 134 to which EV, HV or PHV is electrically connected is connected to the branch circuit 134.

  The branch circuits 1 to 4 are provided with current sensors 141 to 144 for measuring the current values of the respective branch circuits.

  The current sensors 141 to 144 are connected to a current measuring unit 150 that calculates the power consumption in each branch circuit from the current values of the branch circuits measured by the current sensors 141 to 144.

  In addition, a power consumption display device 160 is connected to the current measurement unit 150 by serial communication or the like.

  The power consumption display device 160 includes a memory unit 161 that stores the current value of each branch circuit calculated by the current measurement unit 150 and the power consumption in each branch circuit calculated from the current value.

  FIG. 2 is an example of power consumption in each branch circuit stored in the memory unit 161 of the branch circuit connection confirmation system for distribution boards according to the present embodiment. In the present embodiment, the current value of each branch circuit is measured every certain time, for example, every 10 minutes, and the power consumption in each branch circuit is calculated from the current value and stored in the memory unit 161.

  The current sensors 141 to 144, the current measurement unit 150, and the power consumption display device 160 use a current sensor, a current measurement unit, and a display device that are provided in a HEMS (Home Energy Management System) that controls power supplied to each branch circuit. May be.

  In this case, the current measurement unit 150 and the power consumption display device 160 can be integrated into the HEMS casing, and the power consumption display device 160 can include a touch panel that can also be used as an input device.

  In addition, in HEMS, not only the current value of each branch circuit but also the voltage value can be measured. Therefore, in the present embodiment, in addition to the current sensors 141 to 144, a means for measuring the voltage of each branch circuit is additionally provided. May be.

  In FIG. 2, the power consumption in each branch circuit is described. However, in addition to the current sensors 141 to 144, if a means for measuring the voltage of each branch circuit is additionally provided, this is the basis for calculating the power consumption. The current value and voltage value in each branch circuit may be described together and stored in the memory unit 161.

  The memory unit 161 also includes a branch circuit power load means correspondence table associated with each branch circuit and a dedicated device connected to each branch circuit, and the power consumption trend of each dedicated device. Are stored in advance.

  FIG. 3 is a diagram showing an example of a branch circuit power load means correspondence table stored in the memory unit 161 of the branch circuit connection confirmation system of the distribution board according to the present embodiment. In FIG. 3, the branch circuit 1 is connected to an air conditioner, the branch circuit 2 is connected to an electric water heater, the branch circuit 3 is connected to an IH cooker, and the branch circuit 4 is connected to a vehicle charger. Has been.

  FIG. 4 is a diagram showing an example of a power consumption model stored in the memory unit 161 of the branch circuit connection confirmation system for the distribution board according to the present embodiment. FIG. 4 shows the power consumption, the daily operation time, and the main operation time zone of the dedicated device connected to the branch circuit.

  Various methods can be considered to determine the items shown in FIG. 4. As an example, a result of a statistical investigation of the rated power consumption of each dedicated device, the usage status of each dedicated device, and the actual power consumption. It is conceivable to calculate from

  In the present embodiment, the power consumption in each branch circuit calculated by the current measurement unit 150 and the power consumption in each branch circuit calculated based on the branch circuit power load means correspondence table stored in the memory unit 161 are calculated. The power consumption of each dedicated device is recognized as the power consumption of the dedicated device connected to each branch circuit, and the recognized power consumption is described in the power consumption model stored in the memo unit 161. It is determined whether or not it matches the trend.

  Thereby, it is possible to determine whether or not the dedicated device actually connected to each branch circuit is as described in the branch circuit power load means correspondence table.

  Hereinafter, the operation of the branch circuit connection confirmation system for the distribution board according to the present embodiment will be described. FIG. 5 is a flowchart showing processing of the branch circuit connection confirmation system for the distribution board according to the present embodiment. Note that the flowchart of FIG. 5 is based on the assumption that the current measurement unit 150 and the power consumption display device 160 are integrated by using HEMS as described above.

  In step 100, current values in each branch circuit are measured using current sensors 141-144. In the present embodiment, it is assumed that data is stored in a format such as CSV (Comma-Separated Values) as will be described later. Therefore, the current value is measured at regular intervals. The fixed time may be affected by the processing capacity of the power measurement unit 150 or the power consumption display device 160, the capacity of the memory unit 161, or the like, but may be about 10 minutes.

  If you don't particularly consider storing data in CSV format, measure the current value of each branch circuit continuously instead of every fixed time, and record the measured current value as a single curve graph May be.

  In step 102, the current measurement unit 150 calculates the power consumption in each branch circuit from the current value of each branch circuit measured by the current sensors 141-144. Since the voltage value of the electric power supplied into the building is generally 100V, in this embodiment, the value obtained by multiplying the measured current value by 100V as the voltage value is used as the power consumption.

  However, as described above, a means for measuring the voltage of each branch circuit is separately provided, and the power consumption in each branch circuit is calculated by multiplying the voltage value measured in each branch circuit by the current value. Also good.

  In step 104, the calculated power consumption is stored in the memory unit 161. If the current value of each branch circuit is measured at regular time intervals, the power consumption in each branch circuit stored in the memory unit 161 is data as shown in FIG. 2 recorded in time series at regular time intervals. The memory unit 161 stores such data in a format such as CSV.

  The power usage calculated by the current measurement unit 150 may be stored in the memory unit 161 as long as the capacity of the memory unit 161 is allowed. However, the power usage in time series within a predetermined period may be stored. May be.

  The predetermined period can be of various lengths. For example, one day or the like is conceivable. If the predetermined period is one day, the memory unit 161 has 24 hours from the time when the current value was recently measured. The power consumption calculated based on the measured current value is stored.

  On the other hand, the power consumption calculated based on the current value measured 24 hours before the time when the current value was recently measured is sequentially deleted from the memory unit 161. Can be secured.

  The predetermined period is not limited to one day, and can be changed at any time via input means such as a HEMS touch panel, and may be changed according to the season, for example.

  In step 106, it is determined whether or not a unit time has elapsed since the start of measurement of the current value in step 100. The unit time is the power consumption amount of each branch circuit in time series sufficient to determine whether or not the dedicated device connected to each branch circuit is in the branch circuit power load means correspondence table in step 112 described later. Is the time accumulated in the memory unit 116.

  In this embodiment, it is determined whether the current value calculated from the current value in each branch circuit measured in time series matches the power usage trend of each dedicated device. This is because it is necessary to acquire the power consumption in each branch circuit in time series.

  In the present embodiment, the unit time may have various lengths. Among dedicated devices, for example, an electric water heater is used during a day, such as consuming electric power at night when the power rate is low. Since features are seen in the time zone, it can be one day, ie 24 hours.

  If the unit time is 24 hours, and the power usage data in each branch circuit stored in the memory unit 161 in step 104 is the past 24 hours, the memory unit 161 is connected to each branch circuit. Only the power consumption in each branch circuit necessary for determining whether or not the dedicated device is appropriate is stored, and the memory unit 161 can be operated more efficiently.

  In this step 106, when the unit time has elapsed from the start of current value measurement, the procedure is shifted to the next step 108. However, when the unit time has not elapsed since the start of current value measurement, the procedure is changed to step 100. The current value is measured again.

  In the next step 108, it is determined whether or not it is the first time to determine whether or not the dedicated device connected to each branch circuit is connected.

  In this embodiment, as will be described later, in step 114, the result of determining whether or not the dedicated device is connected in each branch circuit is stored in the memory unit 116 together with the determined date. Accordingly, if the memory of the determination result does not exist in the memory unit 116, the determination as to whether or not the dedicated device is connected in each branch circuit is considered to be the first time, and the procedure is shifted to step 112.

  In step 108, if the memory of the determination result already exists in the memory unit 116, the procedure is shifted to step 110.

  In step 110, the date / time of the determination result stored in the memory unit 116 is referred to and it is determined whether or not the unit time has elapsed since the previous determination.

  In step 110, when it is determined that the unit time has elapsed since the previous determination, the procedure is shifted to step 112, and when it is determined that the unit time has not elapsed since the previous determination, the procedure is changed to step 100. The current value is measured again.

  In step 112, the power consumption in each branch circuit calculated based on the branch circuit power load means correspondence table stored in the memory unit 116 and the power consumption in each branch circuit calculated by the current measuring means 150 is Recognized as the power consumption of the dedicated device connected to the branch circuit, and whether or not the recognized power consumption of the dedicated device connected to each branch circuit matches the power consumption model stored in the memory unit 116 Determine whether.

  Various methods can be considered, but as an example, the lower limit value and the upper limit value are set for the power consumption of each dedicated device as shown in FIG. It is determined whether or not the power consumption amount in the branch circuit falls between the lower limit value and the upper limit value of the power consumption amount in the power consumption model related to the dedicated device connected to the branch circuit.

  If the power consumption in the branch circuit is between the lower limit value and the upper limit value of the power consumption model, then, for example, from the transition of the power consumption for 24 hours stored in the memory unit 116, the daily operation It is conceivable to make a determination based on whether the time matches the power consumption model, and whether the main operating time zone matches the power consumption model.

  In step 112, the trend of power consumption in each branch circuit based on the branch circuit power load means correspondence table is recognized from the branch circuit power load means correspondence table and the power consumption model stored in the memory unit 116. Whether or not the connection of the dedicated device in each branch circuit is determined based on whether or not the recognized power consumption tendency of each branch circuit matches the actual power consumption of each branch circuit calculated by the current measurement unit 150. May be.

  In step 114, the result determined in step 112 and the date and time when the determination process is performed are stored in the memory unit 116.

  In step 116, the determined result is displayed on the power consumption display device 160. In step 116, when the power consumption amount of the dedicated device connected to each branch circuit matches the power consumption model stored in the memory unit 116, that fact may be displayed, or the dedicated device in each branch circuit may be displayed. You may make it display that the connection of an apparatus is normal.

  Further, if the connection is normal, there is no inconvenience for the power supply to the building, so that it is not necessary to display anything on the power consumption display device 160.

  Conversely, if there is a location that does not match the power consumption model in any of the branch circuits, the branch circuit and the dedicated device that do not match are displayed, and an error is displayed for the branch circuit and the dedicated device. It may be.

  After step 116, the determination process may be terminated, but it may be possible that the correspondence between each branch circuit and each dedicated device cannot be accurately determined with only one determination. Is returned to step 100, and the current value is measured again.

  The procedure after step 100 is repeated again, and the power consumption of the dedicated device connected to each of the branch circuits becomes a power consumption model more than a predetermined number of times within a predetermined period, for example, four times a month. When it is determined that they do not match, error determination may be performed for the branch circuit and the dedicated device that do not match, and the power consumption display device 160 may display the result of the error determination.

  The series of processes in FIG. 5 is performed when the power consumption of the dedicated device connected to each branch circuit does not match the power consumption model for a predetermined number of times or more within a predetermined period. The error may be considered deterministic and terminated.

  Or, in order to continuously monitor the soundness of the power supply after that, the series of processing of FIG. 5 is repeated unless the power supply of the branch circuit connection determination system of the distribution board of this embodiment is turned off. Also good.

  If the above-mentioned determination reveals that the dedicated device connected to the branch circuit is not as shown in the branch circuit power load means correspondence table, the branch circuit power load means correspondence table stored in the memory unit 161 This can be dealt with by rewriting the description.

  The rewriting of the branch circuit power load means correspondence table may be performed via a touch panel or the like provided in the HEMS, but it may be rewritten by connecting a device such as a PC to the HEMS.

  After the branch circuit power load means correspondence table is rewritten in accordance with the determination result, the power consumption display device 160 can appropriately display the power consumption of each dedicated device.

1, 2, 3, 4 Branch circuit 10 Branch circuit connection determination system of distribution board 100 Master breaker 120 Distribution board 121, 122, 123, 124 Branch breaker 131 Air conditioner 132 Electric water heater 133 IH cooker 134 Vehicle charger 141 142, 143, 144 Current sensor 150 Current measurement unit 160 Power consumption display device 161 Memory unit

Claims (6)

A plurality of energization current detection means provided in each of a plurality of branch circuits included in the distribution board, and detecting a current value of an energization current of the plurality of branch circuits,
Current measuring means for calculating the power consumption of each of the plurality of branch circuits from the current value detected by each of the plurality of energized current detecting means;
The branch circuit power load means correspondence relationship that correlates the correspondence between each of the branch circuits and the power load means connected to each of the branch circuits, and the tendency of the power consumption of the power load means A storage unit that stores in advance a power consumption model defined for each, and stores a power consumption amount in each branch circuit calculated by the current measurement unit;
Connected to each of the plurality of branch circuits based on the correspondence relationship of the branch circuit power load means stored in the storage means and the power consumption in each of the plurality of branch circuits calculated by the current measuring means. The power consumption of the power load means is recognized, and the power consumption of the power load means connected to each of the recognized branch circuits matches the power consumption model stored in the storage means. Determining means for determining whether to do;
Display means for displaying a determination result by the determination means;
A branch circuit connection determination system for a distribution board comprising:   The display means displays the power consumption of the power load means connected to each of the plurality of branch circuits recognized by the determination means, and is connected to each of the recognized plurality of branch circuits. 2. When it is determined that the power consumption of the power load means does not match the power consumption model stored in the storage means, an error is displayed for the mismatched branch circuit and power load means. Branch circuit connection determination system for distribution boards. The determination unit is configured to store a power consumption amount of the power load unit connected to each of the recognized branch circuits for a predetermined number of times or more within a predetermined period. When it is determined that it does not match the model, error determination is performed for the branch circuit and power load means that do not match,
The distribution panel branch circuit connection determination system according to claim 2, wherein the display unit displays the error determination. The storage means stores the power consumption in a time series in a predetermined period among the power consumption in a time series of each branch circuit calculated by the current measuring means,
The determination means is based on the time-series power consumption in the predetermined period of each branch circuit stored in the storage means and the branch circuit power load means correspondence relationship stored in the storage means. Recognizing the power consumption of the power load means connected to each of a plurality of branch circuits in time series in the predetermined period, and the power load connected to each of the recognized branch circuits The distribution board according to any one of claims 1 to 3, wherein it is determined whether or not power consumption in a time series in the predetermined period of the unit matches a power consumption model stored in the storage unit. Branch circuit connection determination system.   The distribution circuit branching circuit connection determination system according to claim 4, wherein the predetermined period is at least one day.   6. The distribution board branch circuit connection determination system according to claim 5, wherein the predetermined period can be changed according to a season.

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