JP2017070071A - Distribution board management system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide distribution board management system and program that can correct information representing the type of a branch circuit while suppressing increase of the number of components of a branch breaker.SOLUTION: A distribution board management system includes a determination device 3, a storage device 12, and a setting device 13. The determination device 3 determines which one of a first branch circuit and a second branch circuit each of plural branch circuits 5 is. The storage device 12 stores identification information for identifying which one of the first branch circuit and the second branch circuit each of the plural branch circuits 5 is. The setting device 13 rewrites the identification information stored in the storage device 12 according to a determination result of the determination device 3 for branch circuits 5 out of the plural branch circuits 5, for which the determination result of the determination device 3 and the identification information stored in the storage device 12 are different from each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a distribution board management system and a program.

  2. Description of the Related Art Conventionally, an energy management system including a memory medium that stores identification information for identifying types of a plurality of branch breakers (wiring breakers) in a distribution board in association with branch circuits connected to each branch breaker has been proposed. (For example, refer to Patent Document 1). Here, the type of branch circuit (branch breaker) includes “voltage” (100 [V] or 200 [V]). In this energy management system, the type (“voltage”) of the branch circuit stored in the memory medium is used when calculating the power consumption based on the measured current.

  The system described in Patent Document 1 is provided with a read / write circuit that reads identification information from each of a plurality of branch breakers mounted on a distribution board and writes the information to a memory medium. The read / write circuit has a detection unit that reads a signal indicating identification information from an information carrier such as an RF (Radio Frequency) tag provided in each branch breaker in a contact or non-contact manner.

Japanese Patent Laying-Open No. 2015-89232

  In the system described in Patent Document 1 described above, each branch breaker is provided with an information carrier. Therefore, compared with a general branch breaker, the number of parts of the branch breaker is increased by the amount of the information carrier. In particular, when the number of branch circuits increases, the number of information carriers increases accordingly, which may lead to a significant increase in the number of parts of the distribution board as a whole.

  The present invention has been made in view of the above problems, and an object thereof is to provide a distribution board management system and a program capable of correcting information representing the type of branch circuit while suppressing an increase in the number of parts of the branch breaker. And

  The distribution board management system of the present invention is used for a distribution board that is electrically connected to a power line having a first electric wire, a second electric wire, and a third electric wire, and distributes power from the power line to a plurality of branch circuits. The plurality of branch circuits include a first branch circuit electrically connected to one of the first electric wire and the second electric wire and the third electric wire, and the first electric wire and the second electric wire. A determination device for determining whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit; A storage device for storing identification information for identifying whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit; and the determination device among the plurality of branch circuits And the identification information stored in the storage device For composed branch circuit, characterized by comprising a setting device for rewriting the identification information stored in the storage device in response to the determination result.

  The program of the present invention is a distribution board electrically connected to a power line having a first electric wire, a second electric wire, and a third electric wire, wherein one of the first electric wire and the second electric wire and the first electric wire. A plurality of branch circuits classified into two types, a first branch circuit electrically connected to three wires and a second branch circuit electrically connected to the first wires and the second wires; A determination result of a determination device for determining whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit, a computer used with a distribution board for distributing power from a power line; The identification information stored in a storage device that stores identification information for identifying whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit is different from the identification information. At least one of the plurality of branch circuits For 岐回 path, to function as a setting device to rewrite the identification information stored in the storage device in response to the determination result.

  The distribution board management system of the present invention has an advantage that information indicating the type of branch circuit can be corrected while suppressing an increase in the number of parts of the branch breaker.

  The program of the present invention has an advantage that information representing the type of branch circuit can be corrected while suppressing an increase in the number of parts of the branch breaker.

It is a block diagram which shows the structure of the distribution board management system which concerns on embodiment. It is a block diagram which shows the structure of the distribution board which concerns on embodiment. FIG. 3A is a waveform diagram showing a current waveform when the energization state of the first branch circuit is changed from OFF to ON, and FIG. 3B is a waveform diagram showing a differential waveform. FIG. 4A is a waveform diagram showing a current waveform when the energization state of the second branch circuit changes from off to on, and FIG. 4B is a waveform diagram showing a differential waveform.

  The following embodiments relate to a distribution board management system and program, and in particular, a distribution board management system and program used for a distribution board connected to a power line having a first electric wire, a second electric wire, and a third electric wire. About.

  The distribution board management system of this embodiment is a system for correcting identification information (information indicating the type of branch circuit) set for each of a plurality of branch circuits, which is used in the distribution board.

  For example, in the case of a single-phase three-wire distribution system, as shown in FIG. 1, the distribution board includes a first voltage line 41 (L1), a second voltage line 42 (L2), and a neutral line 43 (N). Are electrically connected to the power line 4. In this case, the first voltage line 41 constitutes a “first electric wire”, the second voltage line 42 constitutes a “second electric wire”, and the neutral wire 43 constitutes a “third electric wire”.

  The distribution board distributes the AC power from the power line 4 to a plurality (seven in this embodiment) of branch circuits 51 to 57. Therefore, the plurality of branch circuits 51 to 57 include a “first branch circuit” electrically connected to one of the first voltage line 41 and the second voltage line 42 and the neutral line 43, and the first voltage line. There are two types: a “second branch circuit” electrically connected to 41 and the second voltage line 42. In the following description, each of the plurality of branch circuits 51 to 57 is also referred to as a “branch circuit 5” unless the branch circuits 51 to 57 are particularly distinguished. In addition, the “branch circuit” referred to here is a branch breaker, a wiring path connected to the secondary side of the branch breaker, a wiring device (outlet, wall switch, etc.), and various devices (lighting device, cooking appliance, etc.) Is included.

  Here, if the voltage between the first voltage line 41 or the second voltage line 42 and the neutral line 43 is 100 [V] (effective value), the “first branch circuit” has 100 [V]. V] is applied, and 200 [V] is applied to the “second branch circuit”. The distribution board management system has a function of determining which of the two types of branch circuits (the first branch circuit and the second branch circuit) with different applied voltages corresponds to each of the plurality of branch circuits 5. ing. In addition, the distribution board management system has a function of automatically rewriting the identification information stored in the storage device in advance for a branch circuit in which the determination result by the determination function is different from the identification information stored in the storage device in advance. Have.

  That is, the distribution board management system of the present embodiment includes a determination device 3, a storage device 12, and a setting device 13, as shown in FIG. The determination device 3 determines whether each of the plurality of branch circuits 5 is a “first branch circuit” or a “second branch circuit”. The storage device 12 stores identification information for identifying whether each of the plurality of branch circuits 5 is a “first branch circuit” or a “second branch circuit”. The setting device 13 stores the branch circuit 5 in which the determination result of the determination device 3 and the identification information stored in the storage device 12 among the plurality of branch circuits 5 are different depending on the determination result. Rewrite the identification information.

  By the way, in recent years, a power measurement system that measures at least one of power consumption and power consumption as a measured value for each of the plurality of branch circuits 5 has become widespread. In a general power measurement system, the power consumption in each of the plurality of branch circuits 5 is determined from the voltage value applied to each of the plurality of branch circuits 5 and the current value flowing through each of the plurality of branch circuits 5. And power consumption is required. Therefore, when the plurality of branch circuits 5 include two types of branch circuits having different applied voltages as described above, in the power measurement system, in order to accurately determine the power consumption and the power consumption amount, the plurality of branches Each type of the circuit 5 needs to be set correctly. That is, for each of the plurality of branch circuits 5, information indicating whether the applied voltage is 100 [V] or 200 [V] (hereinafter referred to as “voltage classification”) needs to be set correctly. Therefore, when the supply voltage to the device included in the branch circuit 5 is changed, it is necessary to correct the voltage classification of the branch circuit 5.

  Therefore, in the present embodiment, a distribution board management system for automatically correcting information representing each type of the plurality of branch circuits 5, that is, identification information (voltage classification) is applied to the power measurement system. The distribution board management system will be described by taking as an example a case where the voltage classification is automatically corrected for the branch circuit 5 that needs to be corrected. However, the application of the distribution board management system of the present embodiment is not limited to the power measurement system as long as it is an application that automatically corrects information representing each type of the plurality of branch circuits 5.

  Hereinafter, the distribution board management system of this embodiment will be described in detail. However, the configuration described below is merely an example of the present invention, and the present invention is not limited to the following embodiment. Therefore, various modifications other than this embodiment can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  In this embodiment, the distribution board management system is applied to a power measurement system for measuring at least one of power consumption and power consumption in a customer facility, and setting of voltage classification for each of a plurality of branch circuits 5 And used for correction. The term “customer facility” as used herein means a facility of an electric power consumer, not only a facility that receives power supply from an electric power company such as an electric power company, but also a private power generation facility such as a solar power generation facility. Includes facilities that receive power. In this embodiment, a detached house will be described as an example of a customer facility.

  First, a basic configuration of a power measurement system 1 to which a distribution board management system is applied will be described with reference to FIG.

  As shown in FIG. 1, the power measurement system 1 of the present embodiment includes a measurement device 2, a determination device 3, a calculation device 11, a storage device 12, a setting device 13, and an input device 14. . The measuring device 2 measures a first current I1 flowing through the first voltage line 41, a second current I2 flowing through the second voltage line 42, and a branch current flowing through each of the plurality of branch circuits 5. That is, the measuring device 2 measures a branch current flowing through each of at least the plurality of branch circuits 5. The determination device 3 uses the measurement result of the measurement device 2 to determine whether each of the plurality of branch circuits 5 is a “first branch circuit” or a “second branch circuit”. The computing device 11 computes power consumption and power consumption. The storage device 12 stores each voltage division of the plurality of branch circuits 5. The setting device 13 sets the voltage classification for each of the plurality of branch circuits 5. The input device 14 outputs a permission signal S1 to the setting device 13 in accordance with the operation of the worker.

  Furthermore, the power measurement system 1 includes a plurality of current sensors 21, 22, 201 to 207 in order to measure currents at a plurality of locations. Here, the components of the power measurement system 1 are the same as the components of the distribution board management system except for the arithmetic device 11. That is, the distribution board management system of the present embodiment includes a measuring device 2, a determination device 3, a storage device 12, a setting device 13, an input device 14, and a plurality of current sensors 21, 22, 201 to 207. The plurality of current sensors 21, 22, 201 to 207 may be included in the measuring device 2.

  In the present embodiment, the above-described components constituting the power measurement system 1 are accommodated in a cabinet 60 (see FIG. 2) of the distribution board 6 (see FIG. 2).

  A pair of (main) current sensors 21 and 22 and a plurality of (branch) current sensors 201 to 207 are electrically connected to the measuring device 2. The pair of current sensors 21 and 22 are provided in a one-to-one correspondence with the first voltage line 41 and the second voltage line 42, and the plurality of current sensors 201 to 207 correspond to the plurality of branch circuits 5 on a one-to-one basis. Is provided. Thereby, in the measuring device 2, the first current I1 flowing through the first voltage line 41 can be measured from the output of the current sensor 21, and the second current I2 flowing through the second voltage line 42 is measured from the output of the current sensor 22. Is possible. Further, the measuring device 2 can measure a current flowing through each of the plurality of branch circuits 5 (hereinafter referred to as “branch current”) from the outputs of the plurality of current sensors 201 to 207. Hereinafter, each of the plurality of current sensors 201 to 207 is also referred to as “current sensor 20” unless the current sensors 201 to 207 for measuring the branch current are particularly distinguished.

  Hereinafter, the branch current flowing through the branch circuit 51, that is, the branch current measured by the current sensor 201 is referred to as “branch current I11”. Similarly, a branch current flowing through the branch circuit 5n (n is a natural number), that is, a branch current measured by the current sensor 20n (n is a natural number) is referred to as “branch current I1n”.

  The determination device 3 is electrically connected to the measurement device 2, and using the measurement result of the measurement device 2, each of the plurality of branch circuits 5 includes a “first branch circuit” and a “second branch circuit”. Determine which is. The measurement result of the measurement device 2 here is a measurement result of each current (first current I1, second current I2, and branch current) in the measurement device 2, and is, for example, an effective value or a current waveform.

  Here, the determination device 3 has, for example, a microcomputer as a main component, and implements various functions by executing a program recorded in the memory of the microcomputer by a CPU (Central Processing Unit). The program may be recorded in advance in a memory of a microcomputer, may be provided by being recorded on a recording medium such as a memory card, or may be provided through an electric communication line. The determination operation of the determination device 3 will be described later.

  In the present embodiment, the determination device 3 is configured so that each type of the plurality of branch circuits 5 is at least when the distribution board management system (power measurement system 1) is activated (or restarted), that is, when the power is turned on. Determine. The determination device 3 once determines whether it is the “first branch circuit” or the “second branch circuit”, and thereafter the “first branch circuit” and the “second branch” are periodically determined. It is configured to determine which is a “circuit”. Thereby, the determination apparatus 3 can reduce the processing load (calculation load) related to determination.

  The arithmetic device 11 is electrically connected to the measuring device 2 and uses at least one of the power consumption and the power consumption amount as a measured value for each of the plurality of branch circuits 5 using the measurement result of the measuring device 2. measure. The measured value may be power consumption representing instantaneous power, or may be power consumption representing power consumption (usage) for a certain period of time. Further, the measured value may be both power consumption and power consumption. In the present embodiment, as an example, the measured value is a power consumption amount obtained by integrating power consumption for a certain time (for example, 1 minute).

  The arithmetic device 11 monitors the line voltage of the power line 4 (the first voltage line 41, the second voltage line 42, and the neutral line 43). The computing device 11 is composed of, for example, a microcomputer, and obtains a measured value by computing using a line voltage and a branch current. In addition, in the arithmetic unit 11, the structure which calculates | requires not only the measured value about each of several branch circuit 5 but the total power consumption of a consumer facility as a measured value may be sufficient.

  The storage device 12 stores, for each of the plurality of branch circuits 5, whether it is a “first branch circuit” or a “second branch circuit”. In other words, the storage device 12 stores each voltage division of the plurality of branch circuits 5 (information indicating whether the applied voltage is 100 [V] or 200 [V]). That is, among the plurality of branch circuits 51 to 57, for the branch circuits 51 to 54 that are “first branch circuits”, the voltage classification of 100 [V] is stored in association with each other, and the “second branch circuit” is stored. For certain branch circuits 55 to 57, the voltage classification of 200 [V] is stored in association with each other. Here, in the present embodiment, the voltage classification stored in the storage device 12 in association with each of the plurality of branch circuits 55 to 57 is identification information, and is information representing the type of the branch circuit 5.

  In this embodiment, a circuit number (1, 2, 3,...) Is used as an identification code for identifying each of the plurality of branch circuits 5, and an individual circuit number is assigned to each position of the branch breaker 62. For example, for the upper branch breaker 62, odd numbers (1, 3, 5, 7,...) Are assigned as circuit numbers sequentially from the main breaker 61 side. For the lower branch breaker 62, even numbers (2, 4, 6, 8,...) Are assigned as circuit numbers in order from the main breaker 61 side. And the memory | storage device 12 memorize | stores a voltage division in a table format for every identification code (circuit number) so that a voltage division (type of branch circuit, identification information) may correspond to the several branch circuit 5 on a one-to-one basis. In addition, how to assign the circuit number to the branch circuit 5 is not limited to the above-described example, and can be arbitrarily determined.

  The storage device 12 is electrically connected to the arithmetic device 11. In the arithmetic device 11, the measurement value can be obtained with high accuracy by correcting the arithmetic result in accordance with the voltage classification stored in the storage device 12.

  The setting device 13 is electrically connected to the storage device 12 and sets a voltage classification stored in the storage device 12. Here, the determination device 3 is electrically connected to the setting device 13, and the setting device 13 is configured to write the determination result of the determination device 3 in the storage device 12. That is, the setting device 13 receives the determination result in the determination device 3 that indicates whether each of the plurality of branch circuits 5 is the “first branch circuit” or the “second branch circuit”, and then stores the storage device. The voltage classification is written to 12. In addition, when the determination result of the determination device 3 is different from the voltage classification stored in the storage device 12, the setting device 13 rewrites the voltage classification stored in the storage device 12 according to the determination result. That is, when the setting device 13 needs to correct the voltage classification stored in the storage device 12, the setting device 13 sets the voltage classification stored in the storage device 12 to the correct voltage classification according to the determination result of the determination device 3. rewrite.

  The input device 14 has, for example, a push button switch, and outputs an enabling signal S1 to the setting device 13 when the operator operates the push button switch. When the determination result of the determination device 3 is different from the voltage classification stored in the storage device 12, the permission signal S1 sets the voltage classification stored in the storage device 12 to the correct voltage classification. It is a signal for permitting rewriting. That is, even if the determination result of the determination device 3 is different from the voltage classification stored in the storage device 12, the setting device 13 waits without performing a rewrite operation until the permission signal S1 is input, and permits the permission. When the signal S1 is input, a rewrite operation is performed. In other words, the setting device 13 rewrites the identification information when the determination result of the determination device 3 and the accumulated information stored in the storage device 12 are different for at least one branch circuit 5 among the plurality of branch circuits 5. It waits until the permission signal S1 to permit is input. And the setting apparatus 13 will rewrite the identification information memorize | stored in the memory | storage device 12 according to the determination result of the determination apparatus 3, if permission signal S1 is input.

  Next, the configuration of the distribution board 6 will be described with reference to FIG.

  As shown in FIG. 2, the distribution board 6 includes a main breaker 61 electrically connected to the power line 4 and a plurality of branch breakers 62 electrically connected to secondary terminals of the main breaker 61. 60. Further, the distribution board 6 includes a measurement unit 63, a setting unit 64, current sensors 21 and 22, and sensor units 23 and 24 in the cabinet 60.

  In the present embodiment, as an example, functions of the measurement device 2 and the determination device 3 among the components of the power measurement system 1 are provided in the measurement unit 63. Similarly, the functions as the storage device 12, the setting device 13, and the input device 14 are provided in the setting unit 64, and the functions as the arithmetic device 11 and the current sensors 201 to 207 are provided in the sensor units 23 and 24. .

  The primary side terminal of the main breaker 61 is electrically connected to the system power supply 7 (see FIG. 1) via the power line 4 of the three-wire system (first voltage line 41, second voltage line 42, and neutral line 43). It is connected. The secondary terminal of the main breaker 61 is connected to a three-pole conductive bar of L1, L2, and N. These three-pole conductive bars are electrically connected to the first voltage line 41 (L1), the second voltage line 42 (L2), and the neutral line 43 (N) on a one-to-one basis.

  The plurality of branch breakers 62 are electrically connected to the secondary terminal of the main breaker 61 by being connected to the conductive bar. The plurality of branch breakers 62 are divided into both sides (upper and lower) in the width direction of the conductive bar, and a plurality of branch breakers 62 are arranged.

  Here, among the plurality of branch breakers 62, the branch breakers 62 included in the branch circuits 51 to 54 that are “first branch circuits” include either one of the conductive bars L <b> 1 and L <b> 2 and the N conductive bars. It is connected. Further, among the plurality of branch breakers 62, the branch breakers 62 included in the branch circuits 55 to 57 which are “second branch circuits” are connected to the conductive bar L1 and the conductive bar L2. As a result, each of the branch circuits 51 to 54 serving as the “first branch circuit” is connected to one of the first voltage line 41 (L1) and the second voltage line 42 (L2) and the neutral line 43 (N). It will be electrically connected. In addition, each of the branch circuits 55 to 57 serving as the “second branch circuit” is electrically connected to the first voltage line 41 (L1) and the second voltage line 42 (L2).

  Here, the branch breaker 62 for 100 [V], that is, the branch breaker 62 of the branch circuit 5 classified as the “first branch circuit” is connected to the first voltage line 41 in a state where it is attached to the upper stage of the conductive bar. It is electrically connected to the neutral wire 43. On the other hand, when attached to the lower stage of the conductive bar, the branch breaker 62 for 100 [V] is electrically connected to the second voltage line 42 and the neutral line 43. Further, the branch breaker 62 for 200V, that is, the branch breaker 62 of the branch circuit 5 classified as the “second branch circuit”, regardless of the upper and lower stages of the conductive bar, is the first voltage line 41 and the second voltage line 42. And is electrically connected.

  Each of the pair of current sensors 21 and 22 and the pair of sensor units 23 and 24 is electrically connected to the measurement unit 63. As the current sensors 21, 22, 201 to 207, for example, a CT (Current Transformer) sensor, a Hall element, a magnetoresistive element such as a GMR (Giant Magnetic Resistances) element, a shunt resistance, or the like is used. In the present embodiment, as an example, each of the current sensors 21 and 22 includes a CT sensor. On the other hand, each of the plurality of current sensors 20 provided in the sensor units 23 and 24 is a Rogowski coil that includes an air-core coil that does not use a core (coreless) and generates an output corresponding to a current passing through the through hole. .

  The pair of current sensors 21 and 22 are attached to the power line 4 so as to measure the current of the power line 4 connected to the primary side terminal of the main breaker 61. Here, of the pair of current sensors 21 and 22, one (first) current sensor 21 is attached to the first voltage line 41, and the other (second) current sensor 22 is connected to the second voltage line 42. It is attached. Thereby, in the measuring device 2 provided in the measuring unit 63, the first current I1 flowing through the first voltage line 41 can be measured from the output of the current sensor 21, and the second voltage line 42 flows from the output of the current sensor 22. The second current I2 can be measured.

  Each of the pair of sensor units 23, 24 is arranged between the plurality of branch breakers 62 and the conductive bar so as to measure the current of each of the plurality of branch breakers 62 connected to the secondary terminal of the main breaker 61. It is attached. Each of the pair of sensor units 23, 24 includes a plurality of current sensors 20, and the plurality of current sensors 20 are attached to the plurality of branch breakers 62 so as to correspond one-to-one. Thereby, in the measuring device 2 provided in the measuring unit 63, the branch current flowing through each of the plurality of branch circuits 5 can be measured from the outputs of the pair of sensor units 23 and 24.

  In the present embodiment, the function as the arithmetic unit 11 is provided in the pair of sensor units 23 and 24. Therefore, the pair of sensor units 23 and 24 outputs the measured value (power consumption) obtained by the arithmetic unit 11 to the measuring unit 63 in addition to the branch current flowing through each of the plurality of branch circuits 5. It is configured.

  Here, the upper branch breaker 62 of the conductive bar is electrically connected to the first voltage line 41 regardless of whether it is for 100 [V] or 200 [V]. On the other hand, the lower branch breaker 62 of the conductive bar is electrically connected to the second voltage line 42 regardless of whether it is for 100 [V] or 200 [V]. Therefore, in the sensor unit 23 that measures the current of the upper branch breaker 62, the plurality of current sensors 20 are installed between the first voltage line 41 and the branch breaker 62, and the first voltage line 41 and the branch breaker 62 are arranged. Measure the current between. On the other hand, in the sensor unit 24 that measures the current of the lower branch breaker 62, the plurality of current sensors 20 are installed between the second voltage line 42 and the branch breaker 62, and the second voltage line 42 and the branch breaker 62 are arranged. Measure the current between.

  The setting unit 64 is electrically connected to the measurement unit 63. The setting unit 64 is provided with functions as the storage device 12, the setting device 13, and the input device 14. Therefore, in the setting unit 64, the voltage classification is automatically set using the determination result of the determination device 3 of the measurement unit 63.

  Here, in this embodiment, the setting unit 64 has a function as a communication adapter that communicates with the communication device 8 provided outside the distribution board 6 as shown in FIG. Wireless communication is performed with the device 8. The communication device 8 is connected to the server device 9 via a network 10 such as the Internet, for example, and the measured value of the arithmetic device 11 transmitted from the setting unit 64 and the voltage classification set by the setting device 13 are stored in the server. Transmit to device 9.

  As shown in FIG. 1, the server device 9 includes a storage device 91 and a rewriting device 92. The storage device 91 stores the measurement values of the arithmetic device 11 received from the setting unit 64 via the communication device 8 as storage information. That is, the storage device 91 stores at least one measured value of the power and the amount of power calculated using the branch current for each of the plurality of branch circuits 5 as storage information. When the voltage division of the branch circuit 5 is changed, the rewriting device 92 receives the voltage division set by the setting device 13 via the communication device 8 and stores the accumulated information (measurement value) accumulated in the accumulation device 91. The stored information of the corresponding branch circuit 5 is rewritten using the received voltage classification. That is, the rewriting device 92 identifies the branch circuit 5 having a different determination result from the determination device 3 and the identification information (voltage classification) stored in the storage device 12 among the plurality of branch circuits 5 according to the determination result. Rewrite accumulated information (measurement value) using information. The rewriting operation of the rewriting device 92 will be described later.

  Next, the determination operation of the determination device 3 in the power measurement system 1 of the present embodiment will be described with reference to FIGS. 3A, 3B, 4A, and 4B.

  In FIG. 3A, the horizontal axis represents the time axis, and the current waveform of the first current I1, the second current I2, and the branch current (here, “I11”) of the target circuit (here, the branch circuit 51) is represented. In FIG. 3B, with respect to the first current I1, the second current I2, and the branch current of the target circuit with the horizontal axis as the time axis, the difference between the current waveform in the second period T2 and the current waveform in the first period T1 (second A differential waveform consisting of a period T2-a first period T1) is shown. That is, the differential waveform shown in FIG. 3B is a current change of each of the first current I1, the second current I2, and the branch current of the target circuit. 4A and 4B are drawings corresponding to FIGS. 3A and 3B in the case where the target circuit is the branch circuit 55.

  First, in the branch circuit 51 that is the “first branch circuit”, the energization state changes from OFF to ON from the first period T1 (time t1 to t2) to the second period T2 (time t2 to t3). This will be described with reference to FIGS. 3A and 3B. Here, a case where the energization state of the branch circuit 51 is changed at time t2 which is a boundary between the first period T1 and the second period T2 is illustrated.

  In this case, as shown in FIG. 3A, the branch current I11 is zero in the first period T1 before time t2, and the branch current I11 having a specific waveform flows in the second period T2 after time t2. As a result, in the second period T2 after time t2, the first current I1 obtained by synthesizing the branch current I11 flows in the first voltage line 41 in the first period T1 before the time t2. become. On the other hand, the same second current I2 as in the first period T1 before the time t2 flows continuously through the second voltage line 42 also in the second period T2 after the time t2.

  In this case, the determination device 3 uses the measurement result of the measurement device 2 to change the current change (difference waveform) for each of the first current I1, the second current I2, and the branch current I11 as shown in FIG. 3B. Ask. Here, the current change of the branch current I11 coincides with the current change of the first current I1, and does not coincide with the current change of the second current I2. Therefore, the determination device 3 determines that the branch circuit 51 as the target circuit is the “first branch circuit”.

  Next, in the branch circuit 55 that is the “second branch circuit”, the energization state changes from OFF to ON from the first period T1 (time t1 to t2) to the second period T2 (time t2 to t3). This will be described with reference to FIGS. 4A and 4B. Here, a case where the energization state of the branch circuit 55 changes at time t2 that is a boundary between the first period T1 and the second period T2 is illustrated.

  In this case, as shown in FIG. 4A, the branch current I15 is zero in the first period T1 before time t2, and the branch current I15 having a specific waveform flows in the second period T2 after time t2. Accordingly, the first current I1 obtained by combining the branch current I15 flows in the first voltage line 41 in the second period T2 after the time t2 and the first current I1 in the first period T1 before the time t2. become. Further, similarly to the first voltage line 41 in the second voltage line 42, in the second period T2 after the time t2, the branch current I15 is combined with the second current I2 in the first period T1 before the time t2. The second current I2 flows.

  In this case, the determination device 3 uses the measurement result of the measurement device 2 to change the current change (difference waveform) for each of the first current I1, the second current I2, and the branch current I15 as shown in FIG. 4B. Ask. Here, the current change of the branch current I15 coincides with the current change of the first current I1, and also coincides with the current change of the second current I2. Therefore, the determination device 3 determines that the branch circuit 55 as the target circuit is the “second branch circuit”.

  By the way, after installing the power measurement system 1 described above, when 200 [V] equipment such as an air conditioner or an IH cooker is added, the voltage classification of the corresponding branch circuit 5 is changed from 100 [V] to 200 [V]. It is necessary to change to. In the conventional power measurement system, the operator changes the voltage classification by using a dip switch or a dedicated setting device, so that the change may be forgotten. In addition, if the voltage classification of the branch circuit is forgotten to be changed, an error occurs in the measured value (power or electric energy) calculated using the voltage classification. That is, in this case, an accurate measurement value cannot be obtained.

  Therefore, in the power measurement system 1 of the present embodiment, the voltage classification of the branch circuit 5 is automatically corrected, and the measurement is performed after the circuit configuration of the branch circuit 5 is changed and corrected to the correct voltage classification. Apply distribution board management system that can rewrite measured values to correct measured values. Details will be described below.

  When the power is turned on after changing the circuit configuration of one of the branch circuits 5 and the distribution board management system (power measurement system 1) is activated, the determination device 3 performs the “first operation” for each of the plurality of branch circuits 5. It is determined whether it is a “one branch circuit” or a “second branch circuit”. For example, when the branch circuit 51 that is the “first branch circuit” among the plurality of branch circuits 5 is changed to the “second branch circuit”, the determination device 3 performs the determination operation as described above, and the branch circuit 51 It is determined that 51 is a “second branch circuit”.

  The setting device 13 acquires the determination result of the determination device 3 and the identification information (voltage classification) of the branch circuit 51 stored in the storage device 12, and determines whether or not they match. Here, since the branch circuit 51 was the “first branch circuit” before the circuit configuration of the branch circuit 51 was changed, the storage device 12 stores “first branch circuit” as identification information of the branch circuit 51. 100 [V], which is a voltage classification corresponding to, is stored. Therefore, the setting device 13 uses the identification information stored in the storage device 12 as the determination result of the determination device 3 because the determination result of the determination device 3 and the identification information stored in the storage device 12 are different. Rewrite the identification information according to That is, the setting device 13 rewrites the voltage classification of the branch circuit 51 stored in the storage device 12 from 100 [V] to 200 [V]. With the above procedure, the setting device 13 automatically corrects the voltage division of the branch circuit 51 to the correct voltage division.

  Next, a procedure for rewriting the stored information (measured value) of the branch circuit 51 stored in the storage device 91 of the server device 9 will be described.

  The setting unit 64 performs wireless communication with the communication device 8 and transmits the corrected voltage classification of the branch circuit 51 set by the setting device 13 to the rewriting device 92 of the server device 9. Here, since it takes time until the setting device 13 corrects the voltage classification after changing the circuit configuration of the branch circuit 51, an error occurs in the measured value measured so far. Therefore, it is necessary to correct the measured value from when the circuit of the branch circuit 51 is changed until it is corrected to the correct voltage classification by the setting device 13. Therefore, the rewriting device 92 rewrites the measured value from when the circuit configuration of the branch circuit 51 is changed to when the setting device 13 corrects it to the correct voltage classification to the correct measured value using the corrected voltage classification. That is, the rewriting device 92 uses the identification information (corrected voltage classification) according to the determination result of the determination device 3 to change the circuit configuration of the branch circuit 51 and then corrects the correct voltage classification by the setting device 13. The storage information (measurement value) stored in the storage device 91 is rewritten up to this point.

  According to the distribution board management system of the present embodiment described above, the setting device 13 has a branch in which the determination result of the determination device 3 and the identification information stored in the storage device 12 among the plurality of branch circuits 5 are different. For the circuit 5, the identification information stored in the storage device 12 is rewritten.

  Therefore, according to this distribution board management system, by using the measurement result (current) in the measuring device 2, two types of branch circuits (first branch circuit, second branch) are obtained for each of the plurality of branch circuits 5. Circuit) can be automatically determined. According to this distribution board management system, the setting device 13 correctly identifies the branch circuit 5 among the plurality of branch circuits 5 in which the determination result and the identification information stored in the storage device 12 are different. Information can be rewritten. As a result, there is no need to add parts such as the information carrier described in Patent Document 1 to the branch breaker 62, and information (identification) indicating the type of the branch circuit 5 while suppressing an increase in the number of parts of the branch breaker 62. Information) can be corrected automatically.

  In particular, when this distribution board management system is applied to the power measurement system 1, the measurement device 2 for power measurement can be used to correct the identification information of the branch circuit 5. Therefore, by using the configuration of the existing power measurement system 1, it is possible to correct the identification information of the branch circuit 5 without adding new hardware resources. In the power measurement system 1, setting and correction of the type (voltage classification) of the branch circuit 5 are automated, thereby reducing forgetting to set and mistakes in setting compared to the case where the contractor manually sets. Can do.

  Further, as in the present embodiment, the setting device 13 preferably performs the rewriting operation according to the permission signal S1. That is, the setting device 13 waits until the permission signal S1 is input, and performs a rewrite operation when the permission signal S1 is input. According to this configuration, since the identification information is not rewritten until the permission signal S1 is input, it is possible to prevent the identification information from being rewritten without permission.

  Further, as in the present embodiment, it is preferable that the measuring device 2 further measures the branch current flowing through each of the plurality of branch circuits 5. The storage device 91 stores, for each of the plurality of branch circuits 5, at least one measured value of power and electric energy calculated using the branch current as stored information. The rewriting device 92 uses the identification information corresponding to the determination result for the branch circuit 5 in which the determination result of the determination device 3 and the identification information stored in the storage device 12 are different among the plurality of branch circuits 5. Rewrite. According to this configuration, the erroneous measurement value accumulated between the time when the circuit configuration of the branch circuit 5 is changed and the time when the setting device 13 corrects the correct identification information is automatically corrected to the correct measurement value. Can do.

  Further, when the setting device 13 is mainly a computer (including a microcomputer), the program recorded in the memory of the computer is a program for causing the computer used with the distribution board 6 to function as the setting device 13. The setting device 13 here rewrites the identification information stored in the storage device 12 according to the determination result for the branch circuit 5 in which the determination result of the determination device 3 and the identification information stored in the storage device 12 are different. . The determination device 3 determines the type of the branch circuit 5. The storage device 12 stores each type of the plurality of branch circuits 5.

  According to this program, functions equivalent to the distribution board management system of the present embodiment can be realized without using the dedicated measuring device 2, determination device 3, and setting device 13, and the number of parts of the branch breaker 62 is increased. The information indicating the type of the branch circuit 5 can be corrected while suppressing.

  In the present embodiment, the measurement device 2, the determination device 3, the arithmetic device 11, the storage device 12, and the setting device 13 are provided in the cabinet 60 of the distribution board 6. However, at least one of these devices is provided. May be provided in the communication device 8 or the server device 9 outside the cabinet 60. In addition, at least one of the measurement device 2, the determination device 3, the calculation device 11, the storage device 12, the setting device 13, the storage device 91, and the rewriting device 92 is distributed and exists as in the cloud (cloud computing). It may be realized by a computer.

  Furthermore, in the present embodiment, the determination device 3 determines the type of the branch circuit 5 based on the first current I1, the second current I2, and the current waveform of the branch current of the branch circuit 5, but the determination device 3 May determine the type of the branch circuit 5 based on the characteristic amount (for example, frequency spectrum) of each current. In this case, the determination device 3 may be configured to determine the type of the branch circuit 5 based on whether or not the intensity of any frequency of the branch current is included in the first current I1 and the second current I2. .

  In addition, the determination device 3 determines that the total amount of power consumed by each of the plurality of branch circuits 5 is the sum of the amount of power consumed by the first voltage line 41 and the amount of power consumed by the second voltage line 42. The type of the branch circuit 5 may be determined based on whether or not it matches. Further, the determination device 3 determines whether or not the sum of the effective values of the branch currents of the plurality of branch circuits 5 matches the sum of the effective value of the first current I1 and the effective value of the second current I2. The type of the branch circuit 5 may be determined.

  Further, the input device 14 is not limited to a push button switch. For example, when a touch panel is provided in the setting unit 64 (see FIG. 2), a switch displayed on the touch panel may be used as the input device 14. Further, the communication between the setting unit 64 and the communication device 8 is not limited to wireless communication, and may be wired communication.

  In the present embodiment, the case where the measurement device 2 measures the first current I1, the second current I2, and the branch current has been described. However, the measurement device includes the first voltage line 41, the second voltage line 42, and The branch circuit 5 may be configured to measure a physical quantity such as a voltage.

2 Measuring device 3 Determination device 4 Power lines 5, 51 to 57 Branch circuit 6 Distribution board 12 Storage device 13 Setting device 41 First voltage line (first electric wire)
42 Second voltage line (second electric wire)
43 Neutral wire (3rd electric wire)
91 Storage device 92 Rewriting device S1 Permission signal

Claims (4)

It is electrically connected to a power line having a first electric wire, a second electric wire, and a third electric wire, and is used for a distribution board that distributes power from the power line to a plurality of branch circuits,
The plurality of branch circuits include a first branch circuit electrically connected to one of the first electric wire and the second electric wire and the third electric wire, and an electric connection to the first electric wire and the second electric wire. There are two types of second branch circuit connected to
A determination device for determining whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit;
A storage device for storing identification information for identifying whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit;
Among the plurality of branch circuits, for the branch circuit in which the determination result of the determination device is different from the identification information stored in the storage device, the identification information stored in the storage device according to the determination result A distribution board management system comprising a setting device that rewrites the power distribution board.   The setting device permits rewriting of the identification information when the determination result of the determination device is different from the identification information stored in the storage device for at least one of the plurality of branch circuits. 2. The power distribution device according to claim 1, wherein the system waits until a permission signal is input and rewrites the identification information stored in the storage device according to the determination result when the permission signal is input. Panel management system. The determination device determines using a measurement result of a measurement device that measures at least a branch current flowing through each of the plurality of branch circuits,
For each of the plurality of branch circuits, an accumulation device that accumulates at least one measurement value of the electric power and the electric energy calculated using the branch current as accumulation information;
A rewriting device that rewrites the stored information using the identification information according to the determination result for a branch circuit in which the determination result is different from the identification information stored in the storage device among the plurality of branch circuits; The distribution board management system according to claim 1, further comprising: A distribution board electrically connected to a power line having a first electric wire, a second electric wire, and a third electric wire, wherein one of the first electric wire and the second electric wire and the third electric wire are electrically connected Distributes power from the power line to a plurality of branch circuits classified into two types: a connected first branch circuit and a second branch circuit electrically connected to the first electric wire and the second electric wire. The computer used with the distribution board
A determination result of a determination device that determines whether each of the plurality of branch circuits is the first branch circuit or the second branch circuit; and each of the plurality of branch circuits includes the first branch circuit and the second branch circuit The determination result for at least one branch circuit among the plurality of branch circuits that is different from the identification information stored in the storage device that stores identification information for identifying which is the second branch circuit And a program for causing the function to function as a setting device that rewrites the identification information stored in the storage device.

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