JP6369778B2 - Measurement system, distribution board cabinet, distribution board - Google Patents

Description

  The present invention generally includes a measurement system, a cabinet of a distribution board, a distribution board, and more specifically, a measurement device that measures a value related to power as a measurement value for each of a plurality of electric circuits to which power is distributed by the distribution board. The measurement system, distribution cabinet, and distribution panel.

  Conventionally, in addition to the main breaker and multiple branch breakers, multiple current sensors (branch current sensors) that measure the current value supplied to the electrical equipment via the branch breaker for each branch breaker are housed in the box. An electrical panel has been proposed (see, for example, Patent Document 1). In Patent Document 1, a measurement control unit that receives data (current values) from the plurality of branching current sensors is housed in a box of a distribution board.

  The measurement control unit has an operation input unit for changing the setting of the branch breaker. The operation input unit is used to change various settings in the measurement control unit. For example, this measurement control unit switches the branch breaker that is the target for setting the rated voltage value every time the operation input unit is operated. Here, the measurement control unit has a plurality of branching indicator lights that correspond one-to-one with a plurality of branch breakers. The measurement control unit displays the specified branch breaker by changing the lighting state of the branch indicator light corresponding to the branch breaker specified as the target for setting the rated voltage value from the lighting state of the other branch indicator lights. I do.

  Furthermore, the measurement control unit described in Patent Document 1 sets the magnitude of the rated voltage value of the branch breaker every time the operation input unit is operated in a state where the branch breaker for which the rated voltage value is set is specified. Select from “100V” and “200V”. At this time, the measurement control unit changes the lighting state of the three main indicator lamps according to the selected rated voltage value.

JP 2009-131010 A

  However, since the measurement control unit described in Patent Document 1 requires a plurality of branch indicator lamps that correspond one-to-one with a plurality of branch breakers in order to display a branch breaker designated as a setting target, The space occupied by the branching indicator light in the distribution board becomes relatively large. Moreover, even when the number of branch breakers that can be installed on the distribution board is less than the maximum number of branch breakers, the branch indicator light must be installed according to the maximum number of branch breakers. The indicator light can be wasted.

  In addition, since this measurement unit displays the setting contents according to the lighting state of the three main indicator lamps, the setting items are limited to relatively simple items such as rated voltage values, and more various items can be set. Is unsuitable.

  The present invention has been made in view of the above reasons, and is intended to save the space occupied by the display unit for displaying the setting object in the distribution board, and to measure more various items. The purpose is to provide a distribution board cabinet and distribution board.

The measurement system of the present invention is attached to a distribution board that distributes electric power to a plurality of electric circuits, and measures a value related to electric power as a measurement value for each of the plurality of electric circuits, and each of the plurality of electric circuits A setting device configured to set measurement information used for measurement in the measurement device, the setting device storing a storage unit that stores the measurement information, and an input unit that outputs input information corresponding to an operation input from the outside. A setting unit that sets the measurement information stored in the storage unit according to the input information, and a display that displays the measurement information being set by the setting unit using at least one of letters, numbers, and symbols. And a selection unit that alternatively selects an electric circuit to be set by the setting unit from the plurality of electric circuits according to the input information, and the display unit is being set by the setting unit The total of And information, and a path selected by the selecting section among the plurality of paths, characterized in that it is configured to alternatively display using at least one of the letters and numbers and symbols .

  In this measurement system, the distribution board includes a main breaker and a plurality of branch breakers attached to a cabinet, and the plurality of branch breakers connect the plurality of electric circuits from a conductive bar electrically connected to the main breaker. The measurement device has a plurality of current sensors for measuring a current value flowing through each of the plurality of branch breakers on a substrate attached to the conductive bar, and outputs each of the plurality of current sensors. The measurement value for each of the plurality of electric circuits is measured, and the selection unit selectively selects a current sensor from the plurality of current sensors, and thereby outputs the current sensor from the output of the current sensor. It is desirable that the electric circuit on which the measured value is measured is selected as a setting target in the setting unit.

  Further, in this measurement system, the measurement device includes a plurality of current sensors that are attached to the electric wires constituting each of the plurality of electric circuits and that measure current values flowing through the electric wires, and each of the plurality of current sensors. The measurement value for each of the plurality of electric circuits is measured from the output, and the selection unit selectively selects a current sensor from the plurality of current sensors, thereby obtaining an output from the current sensor. It is preferable that the electric circuit on which the measurement value is measured is selected as a setting target in the setting unit.

  In this measurement system, it is more desirable that the measurement information is information representing at least one of a voltage value to be applied and a type of device to be connected with respect to a target electric circuit among the plurality of electric circuits.

  The cabinet of the distribution board according to the present invention is characterized in that at least the measuring device and the storage unit of the measuring system are attached.

  In the distribution board according to the present invention, a plurality of branch breakers for branching the plurality of electric circuits from a main breaker and a conductive bar electrically connected to the main breaker are attached to the above distribution board cabinet. It is characterized by that.

  The present invention has a display unit that displays measurement information being set by a setting unit using at least one of letters, numbers, and symbols, and the display unit is an electric circuit selected by a selection unit among a plurality of electric circuits. Is displayed using at least one of letters, numbers, and symbols. Therefore, the present invention has an advantage that the space occupied in the distribution board by the display unit for displaying the setting object can be saved, and more various items can be set.

1 is a schematic diagram of a distribution board according to Embodiment 1. FIG. 1 is a front view of a distribution board according to Embodiment 1. FIG. 1 is a front view of a setting device according to a first embodiment. FIG. 6 is an explanatory diagram of the operation of the setting device according to the first embodiment. It is the schematic of the principal part of the distribution board which concerns on Embodiment 2. FIG.

(Embodiment 1)
The measurement system 1 according to the present embodiment includes a measurement device 2 and a setting device 3 as shown in FIG.

  The measuring device 2 is attached to the distribution board 4 that distributes the power to the plurality of electric circuits 10, 10,..., And measures a value related to the electric power for each of the plurality of electric circuits 10, 10,. The setting device 3 sets measurement information used for measurement by the measurement device 2 for each of the plurality of electric paths 10, 10.

  The setting device 3 includes a storage unit 31, an input unit 32, a setting unit 33, a display unit 34, and a selection unit 35.

  The storage unit 31 stores the measurement information. The input unit 32 outputs input information corresponding to an operation input from the outside. The setting unit 33 sets the measurement information stored in the storage unit 31 according to the input information. The display unit 34 displays the measurement information being set by the setting unit 33 using at least one of letters, numbers, and symbols. The selection unit 35 alternatively selects the electric circuit 10 to be set by the setting unit 33 from the plurality of electric circuits 10, 10... According to the input information.

  The display unit 34 is configured to display the electric circuit 10 selected by the selection unit 35 among the plurality of electric circuits 10, 10... Using at least one of letters, numbers, and symbols.

  Here, the distribution board 4 may have a main breaker 41 and a plurality of branch breakers 43, 43. The plurality of branch breakers 43, 43... Branch the plurality of electric paths 10, 10... From the conductive bar 42 electrically connected to the main breaker 41.

  In this case, the measuring device 2 has a plurality of current sensors 22, 22... That measure current values flowing through the plurality of branch breakers 43, 43... On the substrate 21 (see FIG. 2) attached to the conductive bar 42. It is preferable. In this case, the measuring device 2 measures the measured values for each of the plurality of electric circuits 10, 10... From the outputs of the plurality of current sensors 22, 22. Further, in this case, the selection unit 35 selectively selects the current sensor 22 from the plurality of current sensors 22, 22..., Thereby selecting the electric circuit 10 in which the measurement value is measured from the output of the current sensor 22. The setting unit 33 is configured to be selected as a setting target.

  In the measurement system 1, the measurement information is information representing at least one of a voltage value to be applied and a type of device to be connected to the target electric circuit 10 among the plurality of electric circuits 10, 10. Preferably there is.

  In the measurement system 1, the setting device 3 further includes a display control unit 36 that causes the display unit 34 to display at least one of error information indicating an abnormality of the measurement device 2 and maintenance information regarding maintenance of the measurement device 2. It is preferable.

  Moreover, it is preferable that at least the measuring device 2 and the storage unit 31 in the measurement system 1 are attached to the cabinet 44 of the distribution board 4 according to the present embodiment.

  Furthermore, the distribution board 4 according to the present embodiment has a plurality of electrical circuits 10, 10... Branched from the main breaker 41 and the conductive bar 42 electrically connected to the main breaker 41 to the cabinet 44. The branch breakers 43, 43... Are preferably attached.

  Hereinafter, the configuration of the measurement system 1, the cabinet 44 of the distribution board 4, and the distribution board 4 according to the present embodiment will be described in detail. However, the configuration described below is only an example of the present invention, and the present invention is not limited to the following embodiment, and the technical idea according to the present invention is not deviated from this embodiment. Various changes can be made in accordance with the design or the like as long as they are not.

  First, the distribution board 4 will be described. In addition, in this embodiment, although the case where the distribution board 4 is used with a detached house is illustrated, not only this example but the distribution board 4 is used for each dwelling unit of an apartment house, an office, a store, etc. May be. In the following description, the upper, lower, left, and right (upper, left, and right in FIG. 2) in a state where the distribution board 4 is attached to the wall will be referred to as the upper, lower, left, and right. It is not intended to limit the mounting direction.

  As shown in FIG. 2, the distribution board 4 includes a cabinet 44 attached to a wall of a house or the like, and stores a main breaker 41 and a plurality of branch breakers 43, 43. The cabinet 44 is formed in a thin box shape in which the front view is a horizontally long rectangular shape and the front surface is open. An openable / closable lid (not shown) is attached to the front surface of the cabinet 44.

  The main breaker 41 is electrically connected to the primary side of a single-phase three-wire service line 45 (see FIG. 1) of a system power supply (commercial power supply). On the secondary side of the main breaker 41, a conductive bar 42 which is a long plate shape long in the left-right direction and made of a conductive member is electrically connected.

  Here, since a single-phase three-wire system is assumed as a power distribution method, the conductive bar 42 includes a neutral electrode (N phase), a first voltage electrode (L1 phase), and a second voltage electrode (L2 phase). ). That is, three conductive bars 42 are provided. These three conductive bars 42 are arranged on the right side of the main breaker 41 and are fixed to the cabinet 44.

  The plurality of branch breakers 43, 43... Are attached to the right region of the main breaker 41 in the cabinet 44. More specifically, the plurality of branch breakers 43, 43... Are divided into an upper side and a lower side of the conductive bar 42 of the neutral electrode, respectively (in the example of FIG. 2, 10 on the upper side and 13 on the lower side). Are arranged side by side in the horizontal direction.

  Each branch breaker 43 has a primary side terminal (not shown) and a secondary side terminal 431. The primary side terminal is electrically connected to the conductive bar 42, and the secondary side terminal 431 includes a plurality of terminals. Each of the electric circuits 10, 10... Is connected. Each branch breaker 43 is formed in a contracted dimension. Here, the agreement type dimension means a dimension (and shape) of a circuit breaker for a light distribution board in accordance with “JIS C 8201-2-1”.

  Each branch breaker 43 has an insertion port (not shown) into which the conductive bar 42 is inserted on the surface facing the conductive bar 42. Here, the conductive bars 42 of the first voltage electrode and the second voltage electrode have connection terminals (not shown) protruding upward and downward at positions corresponding to the plurality of branch breakers 43, 43. Have. Three insertion ports are provided in each branch breaker 43 so as to correspond to each of the three conductive bars 42, and the primary terminal is connected to two of the three insertion ports. It is provided so as to be exposed in the entrance. Thereby, in the state where each branch breaker 43 is attached to the cabinet 44, the conductive bar 42 is inserted into the insertion port, and the primary side terminal is electrically connected to the conductive bar 42. A connection terminal is inserted into the insertion port corresponding to the conductive bar 42 of the first voltage electrode and the second voltage electrode.

  The branch breaker 43 connected to the neutral electrode and the first voltage electrode has a primary terminal exposed in each insertion port corresponding to the conductive bar 42 of the neutral electrode and the conductive bar 42 of the first voltage electrode. Is provided. Further, the branch breaker 43 connected to the neutral electrode and the second voltage electrode is exposed in each insertion port corresponding to the conductive bar 42 of the neutral electrode and the conductive bar 42 of the second voltage electrode on the primary side terminal. It is provided to do. The branch breaker 43 connected to the first voltage electrode and the second voltage electrode has a primary terminal in each outlet corresponding to the conductive bar 42 of the first voltage electrode and the conductive bar 42 of the second voltage electrode. It is provided so as to be exposed.

  In the present embodiment, below the conductive bar 42 of the neutral electrode, the conductive bar 42 extends from the near side (opposite to the wall) in the depth direction to the neutral electrode, the first voltage electrode, and the second voltage electrode. Arranged in order of voltage poles. On the upper side of the conductive bar 42 of the neutral electrode, the conductive bar 42 is arranged so that the neutral electrode, the second voltage electrode, and the first voltage electrode are arranged in this order from the front side (the side opposite to the wall) in the depth direction. Is done. Therefore, the branch breaker 43 is connected to the neutral pole and the first voltage pole when attached to the upper side of the conductive bar 42 when the branch breaker 43 has the primary side terminals in the respective insertion ports at both ends in the depth direction. When attached to the side, it is connected to the neutral electrode and the second voltage electrode.

  The sensor block 20 of the measuring device 2 is attached between the branch breaker 43 and the conductive bar 42, which will be described later.

  In the electric circuit 10 connected to the secondary terminal 431 of each branch breaker 43, there is one load device such as a lighting device or a hot water supply facility, a plug connection device outlet, a wall switch or the like as a load. Connected as above.

  In addition, the distribution board 4 is electrically connected between a distributed power source (not shown) such as a photovoltaic power generation apparatus that allows reverse power flow to the power system and the primary side of the main breaker 41. A connected primary interconnection breaker (not shown) is attached. The primary interconnection breaker is arranged on the left side of the main breaker 41. The primary interconnection breaker operates to disconnect (disconnect) the distributed power source from the power system, for example, when power supply from the system power source is stopped or when an abnormality occurs in the system power source or the distributed power source.

  Further, a communication adapter 47 having a communication function with a controller (not shown) of a HEMS (Home Energy Management System) is attached to the distribution board 4. Here, the controller of the HEMS has a function of controlling a display terminal (not shown) to visualize (visualize) the measurement result in the measurement system 1 and controlling the device based on the measurement result. It is installed outside the distribution board 4. According to this controller, it becomes possible to manage the state of power consumption in the device, and wasteful consumption of power can be suppressed.

  The communication method between the communication adapter 47 and the controller may be, for example, wireless communication using radio waves as a medium, or wired communication such as a wired LAN (Local Area Network). The communication adapter 47 is arranged on the left side of the primary interconnection breaker. In the cabinet 44, an installation space for attaching another adapter is secured above and below the communication adapter 47, respectively.

  In short, in the present embodiment, the distribution board 4 has at least a main breaker 41, a plurality of branch breakers 43, 43..., A primary interconnection breaker, and a mounting space for attaching the communication adapter 47 as an internal unit in the cabinet 44. Have. In a state where these internal units are attached, the communication adapter 47, the primary interconnection breaker, the main breaker 41, and the plurality of branch breakers 43, 43,...

  Next, the configuration of the measurement system 1 will be described.

  The measurement system 1 includes a measurement device 2 that measures a value related to electric power as a measurement value for each of the plurality of electric paths 10, 10. Further, the measurement system 1 includes a setting device 3 that sets measurement information used for measurement by the measurement device 2 for each of the plurality of electric paths 10, 10.

  In the present embodiment, the measurement device 2 includes a sensor block 20 attached to the conductive bar 42 and a measurement unit 23 electrically connected to the sensor block 20.

  The sensor block 20 has a plurality of current sensors 22, 22... (Refer to FIG. 1) for measuring a current value flowing through each of the plurality of branch breakers 43, 43. . In the sensor block 20, a through hole penetrating in the thickness direction of the substrate 21 is formed at a position corresponding to each connection terminal of the conductive bar 42 of the first voltage electrode and the second voltage electrode. Thereby, in a state where the sensor block 20 is attached between the branch breaker 43 and the conductive bar 42, each connection terminal of the conductive bar 42 of the first voltage electrode and the second voltage electrode is connected to each of the sensor blocks 20. The branch breaker 43 is connected through the through hole.

  In the sensor block 20, current sensors 22 are formed around the respective through holes in the substrate 21. Here, each current sensor 22 is a Rogowski coil that is composed of an air-core coil that does not use a core (coreless) and that generates an output corresponding to the current passing through the through hole. The sensor block 20 calculates a current value flowing through each of the plurality of branch breakers 43, 43... Based on the output of each current sensor 22, and outputs the calculated current value to the measurement unit 23 by an electric signal. The current value flowing through each of the plurality of branch breakers 43, 43... Is the same as the current value flowing through each of the plurality of electric circuits 10, 10... Connected to the plurality of branch breakers 43, 43.

  However, the current sensor 22 does not have to be provided around all the through holes. In the present embodiment, the current sensor 22 is provided only around the back side (wall side) through hole of the pair of through holes arranged in the depth direction. Is provided. Thereby, the current sensor 22 measures the current value of the first voltage electrode when attached to the upper side of the conductive bar 42, and measures the current value of the second voltage electrode when attached to the lower side. Become.

  The measurement unit 23 is attached to an attachment space provided below the main breaker 41 in the cabinet 44. The measurement unit 23 is electrically connected to the sensor block 20, and acquires an electric signal from the sensor block 20, thereby measuring a current value flowing through each of the plurality of electric paths 10, 10.

  The measurement unit 23 uses the current value flowing through each of the plurality of electric circuits 10, 10,... And the voltage value between the lines of the plurality of electric circuits 10, 10,. Calculate power. Here, the measurement unit 23 measures at least one of the instantaneous power, which is the product of the current value and the voltage value, and the power amount obtained by integrating the instantaneous power over a predetermined time as a measurement value for each electric circuit 10. .

  In the present embodiment, the measurement unit 23 is connected to the secondary terminal of one of the branch breakers 43, and power for power supply is supplied via the branch breaker 43. Furthermore, the measurement unit 23 is electrically connected to the communication adapter 47, outputs the measurement value to the communication adapter 47 by communication, and supplies power for power supply to the communication adapter 47.

  Note that the measurement unit 23 measures not only the plurality of branch breakers 43, 43... But also, for example, the current value flowing through the main breaker 41 or the primary interconnection breaker, and the electric power passing through the main breaker 41 or the primary interconnection breaker A value may be obtained as a measured value. In this case, the measuring device 2 may be connected to a current sensor (not shown) composed of a current transformer (CT), and the current sensor may measure the current value passing through the main breaker 41 and the primary interconnection breaker.

  Further, the setting device 3 functions to set measurement information for each of the plurality of electric circuits 10, 10. The measurement information is information used for measurement by the measurement device 2 and is information representing, for example, a voltage value applied to each electric circuit 10. In the present embodiment, the measurement information is information representing at least one of the applied voltage value and the type of device to be connected to the target electric circuit 10 among the plurality of electric circuits 10, 10.

  More specifically, the measuring device 2 uses not only the current value measured by the sensor block 20 but also the voltage value between the lines of each electric circuit 10 when obtaining the measurement value. Therefore, this voltage value is preset by the setting device 3 as measurement information. In the single-phase three-wire system, the voltage of the electric circuit 10 connected to the neutral electrode and the first voltage electrode or the second voltage electrode is “100V”, and the first voltage electrode and the second voltage electrode are The voltage of the connected electric circuit 10 is “200V”. Therefore, the setting device 3 selects an applied voltage value for each electric circuit 10 from two types of “100 V” and “200 V”.

  In addition, the devices connected to the electric circuit 10 include various types of devices such as equipment such as a hot water supply device, a solar power generation device, and a power storage device. The electric circuit 10 to which the equipment is connected, the electric circuit 10 to which the photovoltaic power generation apparatus is connected, and the electric circuit 10 to which the power storage apparatus is connected have different power supply directions. In other words, power is supplied from the distribution board 4 to the equipment (equipment equipment) in the electric circuit 10 to which the equipment is connected, whereas in the electric circuit 10 to which the photovoltaic power generation apparatus is connected, the equipment (solar power is supplied). Electric power is supplied from the photovoltaic power generation device toward the distribution board 4. Furthermore, in the electric circuit 10 to which the power storage device is connected, since the direction of power is different between charging and discharging of the storage battery, power is supplied bidirectionally between the distribution board 4 and the device (power storage device). The Therefore, the setting device 3 selects the type (use) of the connected device for each electric circuit 10 from “photovoltaic power generation”, “power storage device”, and “facility device”.

  However, the measurement information is not limited to the voltage value and the type of device, but may be various information used for measurement by the measurement device 2. For example, the measurement information includes information such as the number of circuit paths 10 (number of circuits) that can be measured by the sensor block 20, whether the current sensor 22 is valid or invalid, and voltage phases (L1 phase, L2 phase). May be.

  Here, in the single-phase three-wire system, the voltage phase of the electric circuit 10 connected to the neutral electrode and the first voltage electrode is the L1 phase, and the electric circuit connected to the neutral electrode and the second voltage electrode. The ten voltage phases are L2 phases. Therefore, the setting device 3 sets the voltage phase for the electric circuit 10 having an applied voltage value of 100 V among the plurality of electric circuits 10, 10.

  However, the voltage phases of the plurality of branch breakers 43, 43,... Are, for example, L1 phase for the upper branch breaker 43 of the conductive bar 42 and L2 phase for the lower branch breaker 43. When separated by the side, the setting of the voltage phase can be omitted. In other words, in this case, the electric circuit 10 corresponding to the sensor block 20 attached to the upper side of the conductive bar 42 is all L1 phase, and the electric circuit 10 corresponding to the sensor block 20 attached to the lower side is all L2 phase. It is determined for each sensor block 20. Therefore, the setting of the voltage phase for each electric circuit 10 can be omitted.

  Furthermore, the setting device 3 may be configured to be able to set items other than the measurement information as described above. Items that can be set by the setting device 3 include, for example, whether the limiter that limits the upper limit value of the measured value is valid or invalid, or whether the peak alarm that is notified when the current value reaches the rated value is valid or invalid. There are other peak alarm rating values. In addition, when a pulse signal corresponding to the flow rate is input from the water meter or gas meter to the communication adapter 47 or the measurement unit 23, an item for which a conversion value (conversion rate) per pulse can be set by the setting device 3 May be included.

  In the present embodiment, the setting device 3 is integrated with the communication adapter 47 by sharing the housing with the communication adapter 47. Further, since the communication adapter 47 is electrically connected to the measurement unit 23, the setting device 3 is also electrically connected to the measurement unit 23. Therefore, the setting device 3 can exchange data with the measurement unit 23 and operates by receiving power supply from one of the branch breakers 43 via the measurement unit 23.

  More specifically, as shown in FIG. 1, the setting device 3 includes a storage unit 31 that stores measurement information, an input unit 32 that outputs input information according to an operation input from the outside, and measurement information as input information. And a setting unit 33 for setting according to Further, the setting device 3 displays the display unit 34 that displays the measurement information being set by the setting unit 33 and the electric circuit 10 to be set by the setting unit 33 from among a plurality of electric circuits 10, 10. And a selection unit 35 for selecting alternatively. The display unit 34 displays the measurement information being set by the setting unit 33 using at least one of letters, numbers, and symbols. Further, the display unit 34 displays the electric circuit 10 selected by the selection unit 35 among the plurality of electric circuits 10, 10,... Using at least one of letters, numbers, and symbols.

  In the present embodiment, the setting device 3 is divided into an interface 310 for accepting operation input by the user and presenting information to the user, and a setting block 320 for performing internal processing. The input unit 32 and the display unit 34 constitute an interface 310, and the storage unit 31, the setting unit 33, the selection unit 35, and a display control unit 36 described later constitute a setting block 320. The setting block 320 has a microcomputer (microcomputer) as a main component and executes functions of the storage unit 31, the setting unit 33, the selection unit 35, and the display control unit 36 by executing a predetermined program. The program may be provided through an electric communication line or may be provided by being stored in a storage medium such as a memory card.

  The setting device 3 holds (stores) the set measurement information in the storage unit 31. Therefore, the measurement device 2 can use the set measurement information at the time of measurement by referring to the measurement information in the storage unit 31.

  As shown in FIG. 3, the setting device 3 has the input unit 32 and the display unit 34 at positions exposed from the front surface of the housing 30. That is, the input unit 32 is provided on the front side of the housing 30 so that the housing 30 can be operated from the front in a state where the housing 30 is attached to the cabinet 44 of the distribution board 4. Similarly, the display unit 34 is provided on the front side of the housing 30 so that the housing 30 can be viewed from the front in a state where the housing 30 is attached to the cabinet 44 of the distribution board 4.

  In the present embodiment, the input unit 32 has eight buttons. The first button is a “+10” button 321, the second button is a “−10” button 322, the third button is a “+” (plus) button 323, and the fourth button is a “−” (minus) button 324. is there. These first to fourth buttons (321 to 324) are used when selecting items to be set and referred to. The fifth button is a “reference” button 325, and the sixth button is a “setting” button 326. These fifth and sixth buttons (325, 326) refer to the selected item and perform a setting operation. Used when. The seventh button is a “▲” (up cursor) button 327, the eighth button is a “▼” (down cursor) button 328, and these seventh and eighth buttons (327, 328) change setting contents. Used when.

  Each of these buttons (321 to 328) constitutes an operator of a push button type switch. That is, the input unit 32 operates a switch using the “+10” button 321 as an operator when the “+10” button 321 is pressed, and sets the “−10” button 322 as an operator when the “−10” button 322 is pressed. Will be operated. Here, each switch of the input unit 32 is a momentary switch and is turned on only while each button (operator) is pressed.

  The display unit 34 is configured to display at least one of letters, numbers, and symbols. In the present embodiment, the display unit 34 includes a 7-digit LED (light emitting diode) for two digits as an example. Thereby, the display unit 34 can display up to a two-digit number if it is a number. However, the display unit 34 is not limited to a 7-segment LED, and may be a 16-segment LED, a dot matrix LED, a liquid crystal display, or the like.

  As described above, the display unit 34 displays the measurement information being set by the setting unit 33 or the electric circuit 10 selected by the selection unit 35 using at least one of letters, numbers, and symbols. Or Therefore, the user can confirm the measurement information being set and the selected electric circuit 10 by confirming the display on the display unit 34. That is, the user can set the measurement information while visually confirming the setting contents by using the input unit 32 and the display unit 34 of the setting device 3 as an interface.

  Furthermore, in the present embodiment, the setting device 3 further includes a display control unit 36 that causes the display unit 34 to display at least one of error information indicating an abnormality of the measurement device 2 and maintenance information regarding maintenance of the measurement device 2. doing. Here, the error information and the maintenance information may include not only information related to the measuring device 2 but also information related to the communication adapter 47. The error information is information indicating, for example, a communication abnormality, a frequency abnormality, and an error in mounting direction of the current transformer (CT). The maintenance information is information indicating the state, version, and the like of the communication adapter 47 and the measurement unit 23. The display control unit 36 displays these error information and maintenance information on the display unit 34 by a code using at least one of letters, numbers, and symbols.

  The setting device 3 according to the present embodiment may be used not only for setting the measuring device 2 but also for setting the communication adapter 47, for example.

  Next, an example of setting measurement information using the setting device 3 of the present embodiment will be described with reference to FIG. FIG. 4 shows the display content (portion where the dot area is lit) of the display unit 34 in each state being set. In the example of FIG. 4, the display unit 34 is “b1” for the first distribution board, “b2” for the second distribution board, and “C1” to “C8” or “01” to “01” for each electric circuit 10. 43 "is displayed. Further, the display unit 34 sets the voltage value 100V to “V1”, the voltage value 200V to “V2”, the invalidity “oF”, the validity “on”, the L1 phase “L1”, the L2 phase “L2”, and the limiter. Is displayed as “LM” and the peak alarm is displayed as “PA”.

Here, it is assumed that the setting items are hierarchized into four layers of “hierarchy 1” to “hierarchy 4” as shown in FIG. In FIG. 4, “tier 1”, “tier 2”, “tier 3”, and “tier 4” are shown in order from the left. In “Level 1”, the distribution board 4 is selected from the first distribution board and the second distribution board.

  In “Level 2”, for the distribution board 4 selected in “Level 1”, the circuit 10 to be set or the limiter or peak alarm is selected as the setting target. Here, the user operates the “+10” button 321 and the “+” button 323 and the “−10” button 322 and the “−” button 324 to select the setting target. In short, in “hierarchy 2”, the selection unit 35 selects the electric circuit 10 to be set by the setting unit 33 from the plurality of electric circuits 10, 10... According to the input information from the input unit 32. It will be selected alternatively. At this time, the display unit 34 displays the electric circuit 10 selected by the selection unit 35 using at least one of letters, numbers, and symbols.

  When one of the electric circuits 10 is selected as a setting target in “Level 2”, the voltage value (100 V, 200 V), the type of device to be connected (use designation), and the validity of this electric circuit 10 are selected in “Level 3”. , Invalid another is selected. Here, the user operates the “▲” button 327 and the “▼” button 328 to select an item. In short, in “hierarchy 3”, the setting unit 33 sets the measurement information according to the input information from the input unit 32. At this time, the display unit 34 displays the measurement information being set by the setting unit 33 using at least one of letters, numbers, and symbols.

  In addition, when the limiter is selected in “hierarchy 2”, whether the limiter is invalid or valid is selected in “hierarchy 3”. When the peak alarm is selected in “Level 2”, the rated value of the peak alarm and whether valid or invalid is selected in “Level 3”. Here, the user operates the “▲” button 327 and the “▼” button 328 to select an item.

  Further, for the electric circuit 10 for which the voltage value 100V is selected in “hierarchy 3”, the voltage phase (L1 phase, L2 phase) is selected in “hierarchy 4”. Here, the user operates the “▲” button 327 and the “▼” button 328 to select an item. In short, in “hierarchy 4”, the setting unit 33 sets the measurement information according to the input information from the input unit 32. At this time, the display unit 34 displays the measurement information being set by the setting unit 33 using at least one of letters, numbers, and symbols.

  The setting device 3 automatically shifts from “hierarchy 1” to “hierarchy 2” for a certain time (for example, 1 second) if there is no operation of the input unit 32, and thereafter the “setting” button 326 is pressed. Are moved in the order of “hierarchy 2”, “hierarchy 3”, and “hierarchy 4”. When the “setting” button 326 is pressed in the lowest layer (“hierarchy 4” for the electric circuit 10 in which the voltage value of 100 V is selected is “hierarchy 3”), the setting device 3 moves to “hierarchy 2”. To do. Further, when the “+” button 323 is pressed in “Level 2” of the first distribution board, the setting device 3 shifts to a state where the second distribution board is selected in “Level 1”. When the “+” button 323 is pressed in “Level 2” of the distribution board of No. 2, the currently selected item is confirmed and the setting process is terminated.

  Note that the setting device 3 is configured to start the setting process as described above when a predetermined condition such as turning on the power or pressing and holding the “set” button 326 is satisfied. Good. The setting device 3 may perform initial setting prior to the setting process as described above. In the initial setting, the setting device 3 selects, for example, the configuration of the distribution board (such as the number of electric circuits 10 that can be measured by the sensor block 20).

  In the above example, the case where one current sensor 22 corresponds to one electric circuit 10 has been described, but a plurality of current sensors 22, 22. For example, in a grid interconnection breaker (not shown) to which a solar power generation device, a fuel cell, and a power storage device are connected, 3P3E (number of poles 3, number of elements 3) and the horizontal dimension is a branch breaker. There are 43 breakers in size (3 pieces). When this type of breaker is attached to the conductive bar 42, the current value flowing through the electric circuit 10 connected to the breaker can be measured by the three current sensors 22, 22, and 22 corresponding to the breaker.

  In this type of breaker, the primary terminal of the neutral electrode (N phase), the primary terminal of the first voltage electrode (L1 phase), and the primary terminal of the second voltage electrode (L2 phase) They are provided at different positions in the left-right direction. Therefore, the three current sensors 22, 22, and 22 corresponding to this breaker individually measure the current values of the N phase, the L1 phase, and the L2 phase. Therefore, when the measurement device 2 performs measurement in the L1 phase, for example, it is necessary to perform measurement using only one of the three current sensors 22, 22, and 22 corresponding to the breaker. In this case, for the three current sensors 22, 22, and 22, the setting device 3 sets the type of equipment to be connected to “solar power generation device”, for example, and actually measures the current value in the measurement device 2. The largest current value may be adopted.

  In addition, the setting device 3 sets, for example, a “photovoltaic power generation device” for the current sensor 22 corresponding to the L1 phase among the three current sensors 22, 22, 22, and the other two currents. The sensors 22 and 22 may be “invalid”. Alternatively, the setting device 3 stores in advance the relationship between the type of device to be connected and the current sensor 22 that performs measurement, and performs measurement when the type of device to be connected is, for example, “solar power generation device”. The current sensor 22 may be specified.

  According to the measurement system 1 of the present embodiment described above, the display unit 34 displays the measurement information being set by the setting unit 33 using at least one of letters, numbers, and symbols. , 10... Are not required. Therefore, the measurement system 1 can relatively reduce the space that the display unit 34 occupies in the distribution board 4 (the cabinet 44 thereof), and it is not necessary to provide indicator lights according to the maximum number of branch breakers 43. There is no possibility that some indicator lights are wasted.

  Moreover, since the measurement system 1 displays the measurement information being set by the setting unit 33 using the display unit 34 using at least one of letters, numbers, and symbols, only the relatively simple items such as voltage values are displayed. In addition, various items such as the type of connected device can be set.

  In short, the measurement system 1 according to the present embodiment saves the space occupied by the display unit 34 for displaying the setting target in the distribution board 4 (the cabinet 44), and sets more various items. There is an advantage that it can respond to.

  Moreover, according to the configuration in which the setting device 3 is attached to the cabinet 44 of the distribution board 4, the user can set all measurement information within the distribution board 4, and uses a dedicated setting terminal or the like. There is no need.

  Moreover, in this embodiment, the measuring device 2 has a plurality of current sensors 22, 22... On the substrate 21 attached to the conductive bar 42, and a plurality of electric paths 10 from the outputs of the plurality of current sensors 22, 22. , 10... Are measured. Therefore, even when the current sensors 22, 22... Are provided for all of the plurality of branch breakers 43, 43..., The plurality of current sensors 22, 22. Further, it is possible to save the labor of construction as compared with the case where a current sensor such as a current transformer is individually provided for each of the plurality of electric circuits 10, 10.

  In the present embodiment, the measurement information is information representing at least one of a voltage value to be applied and a type of device to be connected to the target electric circuit 10 among the plurality of electric circuits 10, 10. Therefore, the setting device 3 can individually set the voltage value and the type of connected device for each electric circuit 10, and can cope with the case where the voltage value and the type of connected device are different for each electric circuit 10. it can.

  Furthermore, in the present embodiment, the setting device 3 further includes a display control unit 36 that causes the display unit 34 to display at least one of error information indicating an abnormality of the measurement device 2 and maintenance information regarding maintenance of the measurement device 2. ing. Therefore, the setting device 3 can utilize the display unit 34 even when it is not used for setting measurement information.

  Further, the cabinet 44 of the distribution board 4 according to the present embodiment is provided with at least the measuring device 2 and the storage unit 31 in the measuring system 1 described above. Therefore, the measurement device 2 only needs to refer to measurement information stored in the storage unit 31 when performing measurement, and does not need to exchange measurement information with the outside of the cabinet 44.

  By the way, as a first modification of the present embodiment, the setting device 3 includes an interface 310 (input unit 32 and display unit 34) and a setting block 320 (storage unit 31, setting unit 33, selection unit 35, and display control unit). 36) and may be provided separately. In this case, the setting block 320 may be attached to the cabinet 44 of the distribution board 4, and the interface 310 may be provided outside the cabinet 44. Thereby, the user can set measurement information even from outside the distribution board 4.

  Furthermore, the measurement system 1 may use a general-purpose portable terminal such as a smartphone or a tablet terminal as the interface 310, for example. In this case, measurement information can be set using the interface 310 by performing communication between the mobile terminal used as the interface 310 and the setting block 320 in the cabinet 44.

  As a second modification, the setting device 3 may be a separate body from the communication adapter 47. In this case, the setting device 3 is attached to the cabinet 44 of the distribution board 4 separately from the communication adapter 47.

  As a third modification, the setting device 3 includes a setting block 320 (a storage unit 31, a setting unit 33, a selection unit 35, and a display control unit 36) in which at least the storage unit 31 is integrated with the measurement unit 23. Also good. In this case, the entire setting block 320 may be integrated with the measurement unit 23, and the interface 310 (the input unit 32 and the display unit 34) may be further integrated.

(Embodiment 2)
The measurement system 1 according to the present embodiment is different from the measurement system 1 according to the first embodiment in the configuration for measuring the measurement values of each of the plurality of electric circuits 10, 10. Hereinafter, the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.

  As shown in FIG. 5, the measurement system 1 according to the present embodiment includes a plurality of currents that measure current values flowing through the electric wires that are attached to the electric wires constituting each of the electric circuits 10, 10. It has sensors 24, 24. The measuring device 2 measures the measured values for each of the plurality of electric circuits 10, 10... From the outputs of the plurality of current sensors 24, 24.

  Further, the selection unit 35 selectively selects the current sensor 24 from the plurality of current sensors 24, 24... To set the electric circuit 10 in which the measurement value is measured from the output of the current sensor 24. It is comprised so that it may select as a setting object in.

  The current sensor 24 in the present embodiment is, for example, a current transformer (CT), and is individually attached to each of the plurality of electric circuits 10, 10. The plurality of current sensors 24, 24... Are electrically connected to the measurement unit 23.

  According to the measurement system 1 having the configuration described above, even if the distribution board 4 does not support the attachment of the sensor block, by attaching the current sensor 24 to each electric circuit 10, Measurement becomes possible.

  Note that the configuration of the measurement system 1 according to the present embodiment may be combined with the sensor block 20 described in the first embodiment. That is, the measurement system 1 has both a plurality of current sensors 22, 22... Provided on the substrate 21 and a plurality of current sensors 24, 24. The structure which measures a measured value may be sufficient.

  Other configurations and functions are the same as those of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Measuring system 2 Measuring apparatus 3 Setting apparatus 4 Distribution board 10 Electric circuit 21 Board | substrate 22, 24 Current sensor 31 Memory | storage part 32 Input part 33 Setting part 34 Display part 35 Selection part 36 Display control part 41 Master breaker 42 Conductive bar 43 Branch breaker 44 cabinets

Claims (6)

A measuring device that is attached to a distribution board that distributes power to a plurality of electrical paths, and that measures a value related to power as a measured value for each of the plurality of electrical paths;
A setting device for setting measurement information used for measurement by the measurement device for each of the plurality of electric circuits,
The setting device includes:
A storage unit for storing the measurement information;
An input unit that outputs input information corresponding to an operation input from the outside;
A setting unit configured to set the measurement information stored in the storage unit according to the input information;
A display unit that displays the measurement information being set by the setting unit using at least one of letters, numbers, and symbols;
A selection unit that selectively selects an electric circuit to be set in the setting unit from the plurality of electric circuits according to the input information;
The display unit includes: the measurement information being set by the setting unit, and a path selected by the selecting section among the plurality of paths, alternatively with at least one of the letters and numbers and symbols A measurement system characterized by being displayed on the screen. The distribution board has a main breaker and a plurality of branch breakers attached to the cabinet, and the plurality of branch breakers branch the plurality of electric circuits from a conductive bar electrically connected to the main breaker,
The measuring device has a plurality of current sensors for measuring a current value flowing through each of the plurality of branch breakers on a substrate attached to the conductive bar, and the plurality of electric paths from the outputs of the plurality of current sensors. Measuring the measured values for each of the
The selection unit selectively selects a current sensor from among the plurality of current sensors, thereby selecting an electric circuit on which the measurement value is measured from an output of the current sensor as a setting target in the setting unit. It is comprised as follows. The measuring system of Claim 1 characterized by the above-mentioned. The measuring device includes a plurality of current sensors that are attached to electric wires constituting each of the plurality of electric circuits and that measures a current value flowing through the electric wires, and outputs each of the plurality of electric circuits from outputs of the plurality of current sensors. Measuring the measured values for each,
The selection unit selectively selects a current sensor from among the plurality of current sensors, thereby selecting an electric circuit on which the measurement value is measured from an output of the current sensor as a setting target in the setting unit. It is comprised as follows. The measuring system of Claim 1 characterized by the above-mentioned. The measurement information is information representing at least one of a voltage value to be applied and a type of a connected device with respect to a target electric circuit among the plurality of electric circuits. The measurement system according to any one of the above. A cabinet of a distribution board, wherein at least the measurement device and the storage unit of the measurement system according to any one of claims 1 to 4 are attached. A plurality of branch breakers for branching the plurality of electric paths from a main breaker and a conductive bar electrically connected to the main breaker are attached to the cabinet of the distribution board according to claim 5. Distribution board to do.

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