JP2020120492A - Distribution board - Google Patents

Abstract

To improve safety for supplying power to a power consumer.SOLUTION: A distribution board connects a power system with an external device, and comprises: a first housing chamber which accommodates a device to be managed by a power supplier; a first door provided at the first housing chamber; a first key for the power supplier provided at the first door; a second housing chamber which accommodates a device to be managed by a power consumer; a second door provided at the second housing chamber; and a second key for the power consumer provided at the second door. The first key is different from the second key.SELECTED DRAWING: Figure 1

Description

The present invention relates to a switchboard that connects a power system to an external device.

With the liberalization of electricity, the number of companies supplying electricity is increasing in addition to major electric power companies. Those companies generate and sell renewable energy such as solar power generation represented by mega solar. In addition, as an individual, the power generated by solar power generation is sold to an electric power company for personal use, storage of electricity, etc.

When buying and selling the generated electric power to an electric power company or a new electric power company, it is necessary to connect to the electric power system, and DC-AC conversion and boosting are required. For stable supply of this electric power, it is necessary to install peripheral equipment such as a power conditioner, junction box, watt-hour meter, circuit breaker, and step-up transformer. These devices are stored in boxes or boards, and are managed by a company or a management company entrusted to the company. It is possible to add value in the flow of power supply and usage. When the person who generated electricity and the person who uses and sells the generated electricity do not match, it is necessary to establish a boundary line for management.

This also applies to the ground transformers installed on the road by the electric power company. When installing digital signage (electronic signboards), Wi-Fi base stations, and storage batteries for emergency charging on the road, Since electric power is required, it is necessary to install it around the ground transformer or inside the ground transformer considering the ease of wiring. The person who operates these devices and the electric power company may be different, and management is different. In establishing this boundary, it is important to consider safety in use and ease of introduction, management, and operation.

Japanese Patent Application Laid-Open No. 2004-242242 discloses that "a monitoring control device includes a functional cabinet, a functional unit, and a control cabinet. The functional cabinet includes a plurality of frame portions having a predetermined accommodation size and at least a part of the frame portions. It has a door that can open and close the opening. The functional unit is housed in the frame part in a replaceable manner and includes circuits and parts of the functional unit. The control cabinet is arranged next to the functional cabinet and housed in the frame part. Has a supervisory control function for supervising and controlling the functional unit" (refer to the summary).

JP, 2017-184468, A

When users are used by two or more companies in a switchboard, a person who supplies electric power and power (hereinafter referred to as a power supplier) and a person who manages and operates electronic devices (hereinafter referred to as a power consumer) It is necessary to provide a separate space for safety and management.

In Patent Document 1, as a result of user authentication based on the authentication information for unlocking the functional unit input on the touch panel, if the user who has the access authority to the functional unit opens the door of the functional unit. Although it is described that it is open (see claim 2), the safety of the electric power supplier and the electric power consumer is not considered.

An object of the present invention is to improve safety for supplying power to a power consumer.

In order to solve the above problems, the present invention provides a door having a different key for a power supplier and a power consumer, and installs it in a space used by the power consumer outside a space used by the power consumer or a switchboard. A device for monitoring or controlling the electric power of the specified electronic device is arranged.

To give an example of the "switchboard" of the present invention,
A switchboard for connecting an electric power system and an external device, the first storage chamber containing a device managed by a power supplier, a first door provided in the first storage chamber, and the first door. A first key for a power supplier, a second accommodation chamber accommodating a device managed by an electric power consumer, a second door provided in the second accommodation chamber, and a second door. And a second key for a power consumer provided on the door, wherein the first key and the second key are different.

According to the present invention, it is possible to safely supply electric power to the electric power consumer from the inside of the switchboard.
Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

The figure which shows the switchboard of Example 1. The figure which shows the inside of the switchboard by the side of an electric power consumer of Example 1. The figure which shows the switchboard of Example 2. The figure which shows the modification of the switchboard of Example 2. The figure which shows the switchboard which installed the electronic device in the door surface of Example 3. The figure which shows the inside of the switchboard by the side of an electric power consumer which installed the electronic device in the door surface of Example 3. The figure which shows the other example in the switchboard of the electric power consumer side which installed the electronic device in the door surface of Example 4. The figure which shows the other example in the switchboard of the electric power consumer side which installed the electronic device in the door surface of Example 5. The figure which shows an example of the conventional switchboard.

Before describing the embodiments of the present invention, a conventional switchboard will be described. FIG. 9 shows an example of a conventional switchboard and an apparatus in which electronic devices are integrally attached to the upper part of the switchboard. In the figure, reference numeral 101 denotes a switchboard main body, and reference numeral 102 denotes an electronic device to which power is supplied from the switchboard. In the illustrated example, the electronic device 102 includes a display panel 104 such as a liquid crystal panel, and is an example of digital signage. The switchboard main body 101 is provided with a high-voltage side door 106 and a low-voltage side door 107. Inside the high-voltage side door 106, high-voltage side devices such as a primary cable and a switch are housed. The low-voltage side equipment such as a transformer and a protective device is housed in the. The terminals on the primary side of the transformer are located inside the high-voltage side door 106, and the terminals on the secondary side of the transformer are located inside the low-voltage side door 107. The high voltage side door 106 and the low voltage side door 107 are provided with a key 103 managed by the power supplier.

In the switchboard of FIG. 9, the high-voltage side door 106 and the low-voltage side door 107 are managed by the power supplier, and do not have a space managed by the power consumer. INDUSTRIAL APPLICABILITY The present invention provides a space on a switchboard managed by a power consumer to improve safety for supplying power to the power consumer.

Embodiments of the present invention will be described below with reference to the drawings. In each of the drawings for describing the embodiments, elements having the same function are designated by the same name and reference numeral, and repeated description thereof will be omitted.

FIG. 1 shows a switchboard according to a first embodiment of the present invention. The switchboard of the first embodiment is an example in which an electronic device 102, which is an externally connected device, is integrally installed on an upper part of a switchboard body 101. The switchboard main body 101 is provided with a high-voltage side door 106 for a power supplier, a low-voltage side door 107 for a power supplier, and a power consumer door 108. Inside the high-voltage side door 106 for the power supplier, high-voltage side devices such as a primary cable and a switch managed by the power supplier are accommodated, and inside the low-voltage side door 107 for the power supplier, power supply is performed. It houses low voltage equipment such as transformers and secondary terminals of transformers that are controlled by the operator. A storage room managed by the power consumer is provided inside the power consumer door 108, and a low-voltage side device managed by the power consumer is housed therein. The high voltage taken in from the power system is transformed into a low voltage by the transformer, and the secondary side terminal of the transformer passes through the door 108 for the electric power consumer to supply electric power to the electronic device 102 which is an externally connected device. A first key 103 for a power supplier is attached to the high-voltage side door 106 for a power supplier and a low-voltage side door 107 for a power supplier, and a first key 103 for a power supplier is attached to a power consumer door 108. A second key 105 for electric power consumers, which is different from the key 103, is attached.

FIG. 2 is a diagram showing a state in which the power consumer door 108 of FIG. 1 is opened and closed. A protection device 109 such as a fuse or an earth leakage breaker for protecting the electric power supplied from the electric power supplier is installed in the accommodation room inside the electric power consumer door 108. The protective device 109 can be installed inside the high-voltage side door 106 for the power supplier and the low-voltage side door 107 for the power supplier for maintenance by the power supplier side. In addition, a meter (power measuring device for measuring the power consumption of the external connection device) 110 for accurately grasping the power consumption of the power consumer is installed inside the door 108 for the power consumer. Electric power is supplied to the external electronic device 102 through the protective device 109 and the meter 110. Although not shown in FIG. 2, it is preferable to provide a wireless communication unit for wirelessly communicating the measurement result of the meter 110, which is a power measuring device, and the state of the protection device 109 to an external management device.

The first key 103 and the second key 105 are not limited to physical keys, and any key such as an electronic lock, a card key, or a personal identification number key can be used. When the second key 105 provided on the power consumer door 108 is an electronic lock, power may be supplied from the secondary side of the transformer.

In FIGS. 1 and 2, the device in which the electronic device 102 and the switchboard main body 101 are integrated has been described as an example, but the electronic device 102 may be separated from the switchboard main body 101 and the two may be connected by a cable or the like. As the external connection device, various devices such as a digital signage, a Wi-Fi base station, and a storage battery for emergency charging can be used.

In addition, in FIGS. 1 and 2, an example of a ground transformer that supplies electric power transformed from the power system to the electronic device 102 such as a digital signage has been described in mind, but in the case of a solar power generation panel (power conditioner) For example, each device may be housed as follows. That is, a meter or the like for accurately grasping the power generation amount of the solar power generation is installed inside the power consumer door 108. Then, an inverter device for converting direct current to alternating current and a transformer for converting low voltage to high voltage are provided inside the low voltage side door 107 for the power supplier, and the system side is provided inside the high voltage side door 106 for the power supplier. Install a circuit breaker or system side cable. Alternatively, when the photovoltaic power generator manages the inverter device and the transformer, these may be arranged inside the door 108 for the electric power consumer.

According to the present embodiment, the switchboard is provided with the accommodation room for accommodating the equipment managed by the power supplier and the accommodation room for accommodating the equipment managed by the power consumer to accommodate the equipment managed by the power supplier. Since the key for the door of the accommodation room and the key for the door of the accommodation room that houses the equipment managed by the power consumer are different keys, the power supplier and the power consumer can manage their own equipment reliably. It is possible to improve the safety for supplying electric power to electric power consumers.

Further, by providing a protective device such as a fuse or an earth leakage breaker in the accommodation room that accommodates the device managed by the power consumer, the safety of the device used by the power consumer can be improved. Further, by providing a power measuring device that measures the amount of power used by the external connection device in the accommodation room that accommodates the device managed by the power consumer, it is possible to accurately grasp the amount of power used by the power consumer.

FIG. 3 shows a switchboard according to a second embodiment of the present invention. FIG. 3 shows an example of an apparatus in which an electronic device 111 is integrally attached to the left side of the switchboard body 101. When the electronic device is installed on the left side of the switchboard, the power consumer door 108 is placed on the left side of the switchboard, which is the electronic device side. The arrangement of each device in the switchboard main body 101 is the same as that in the first embodiment, the high voltage taken from the power system is transformed into a low voltage by the transformer, and the secondary side terminal of the transformer is used to the inside of the power consumer door 108. The electric power is supplied to the electronic device 111 which is an externally connected device. The left side of the switchboard body 101 is provided with a hole for allowing a cable for power supply to pass through from the inside of the power consumer door 108. Similar to the first embodiment, the first key 103 for the power supplier is attached to the high-voltage side door 106 for the power supplier and the low-voltage side door 107 for the power supplier, and the power consumer door 108 is A second key 105 for electric power consumers, which is different from the first key 103 for electric power suppliers, is attached.

FIG. 4 shows a modification of the switchboard according to the second embodiment of the present invention. This modification is an example of an apparatus in which the electronic device 112 is integrally attached to the right side of the switchboard body 101. When the electronic device is installed on the right side of the switchboard, the power consumer door 108 is placed on the right side of the switchboard, which is the electronic device side. The inside of the door 108 for power consumers of the switchboard is similar to the case where the electronic device of FIG. 3 is installed on the left side, and the high voltage taken in from the power system is transformed into a low voltage by the transformer, and the secondary side of the transformer. Power is supplied from the terminal to the external electronic device 112, which is an externally connected device, through the inside of the power consumer door 108. On the right side of the switchboard main body 101, a hole is provided through which the power supply cable is inserted from the inside of the power consumer door 108. Similar to the first embodiment, the first key 103 for the power supplier is attached to the high-voltage side door 106 for the power supplier and the low-voltage side door 107 for the power supplier, and the power consumer door 108 is A second key 105 for electric power consumers, which is different from the first key 103 for electric power suppliers, is attached.

FIG. 5 shows a switchboard according to a third embodiment of the present invention. In the first and second embodiments, the electronic device 102 is installed outside the switchboard, but in this embodiment, the display panel 104, which is an electronic device, is installed inside the switchboard.

As shown in the figure, the display panel 104, which is an electronic device, is attached to the power consumer door 208. Inside the high-voltage side door 206 for the power supplier, high-voltage side devices such as a primary cable and a switch, which are managed by the power supplier, are housed, and inside the low-voltage side door 207 for the power supplier, power is supplied. Contains low-voltage equipment such as transformers and transformer secondary terminals that are controlled by the supplier. In addition, a storage room managed by the power consumer is provided inside the door 208 for the power consumer, and a low-voltage side device managed by the power consumer is housed therein. Then, similarly to the first embodiment, the first key 103 for the power supplier is attached to the high-voltage side door 206 for the power supplier and the low-voltage side door 207 for the power supplier, and the first key 103 for the power supplier is attached to the door 208 for the power consumer. Is attached with a second key 105 for a power consumer, which is different from the first key 103 for a power supplier.

FIG. 6 is a diagram showing a state in which the power consumer door 208 of FIG. 5 is opened and closed. Inside the door 208 for electric power consumers, as in FIG. 2, a protection device 109 such as a fuse or an earth leakage breaker for protecting the supplied electric power is installed. In addition, a meter 110 for accurately grasping the power consumption of the power consumer is installed in the power consumer door 208. Further, an electronic device 211 that performs electronic control such as digital signage and wireless communication such as display data is installed.

In this embodiment, the high voltage taken from the power system is transformed into a low voltage by a transformer, passes through the secondary side terminal of the transformer through the electricity demand door 208, and is connected to the electricity demand door 208 by an external connection. Electric power is supplied to the display panel 104 which is a device. Although the display panel 104 is attached to the electric power consumer door 208 in FIG. 5, in the case of a Wi-Fi base station or the like, the electronic device may be arranged in the accommodation room inside the electric power consumer door 208. ..

According to the present embodiment, in addition to the effect described in the first embodiment, by mounting an electronic device such as a display panel on the door of the switchboard itself or the storage chamber inside the door, the space occupied by the device can be reduced. Also, wiring to electronic equipment becomes easy.

FIG. 7 shows a switchboard according to a fourth embodiment of the present invention. In the present embodiment, as shown in the figure, a door opening/closing detection sensor 213 is installed in the accommodation chamber inside the power consumer door 208 to prevent unintended opening/closing of the door. In addition, an alarm device 215 that issues an alarm when an abnormality in opening and closing the door is detected is installed. Further, a monitoring camera 214 for monitoring the inside of the accommodation chamber is installed. Further, it is preferable to provide wireless communication means for wirelessly communicating the state of the accommodation room observed by the door opening/closing detection sensor 213, the alarm device 215, and the monitoring camera 214 to an external management device.

According to the present embodiment, in addition to the effects described in the first embodiment, a door opening/closing detection sensor, an alarm device, and a monitoring camera are installed, so that an abnormality in the power consumer door and the inside of the accommodation chamber can be detected. And can give an alarm.

FIG. 8 shows a switchboard according to a fifth embodiment of the present invention. In the present embodiment, as shown in the figure, a cooling fan 217 is installed inside the storage chamber inside the power consumer door 208. As a result, it is possible to take measures against the temperature rise in the switchboard by increasing the number of electronic devices installed such as the protection device and the meter. In addition, a storage battery 216 for emergency or quick charging is installed.

101...Switchboard body
102...Electronic equipment
103... Key for power supplier
104... Display panel
105... Key for electricity consumers
106…High voltage side door for power supplier
107...Low voltage side door for power supplier
108... Door for electricity consumers
109…Protective device
110…Meter (power measuring device)
111… Electronic equipment for installation on the left side of the switchboard
112…Electronic equipment for installation on the right side of the switchboard
201...Switchboard body
206… High voltage side door for power supplier
207...Low voltage side door for power supplier
208... Door for electricity consumers
211...Electronic equipment
213… Door open/close sensor
214... Surveillance camera
215... Alarm device
216... Storage battery
217... Cooling fan

Claims (15)

A switchboard that connects the power system to an external device,
A first accommodation room accommodating equipment managed by the power supplier;
A first door provided in the first storage chamber;
A first key for the power supplier provided on the first door;
A second accommodation room accommodating equipment managed by the electric power consumer;
A second door provided in the second storage chamber;
A second key for a power consumer provided on the second door;
Equipped with
A switchboard in which the first key and the second key are different. The switchboard according to claim 1,
A switchboard comprising a power measuring device and/or a protection device for measuring the amount of power of the external device in the second storage chamber. The switchboard according to claim 2,
A power distribution board provided with wireless communication means for wirelessly communicating the measurement result of the power measuring device and/or the state of the protection device to an external management device in the second storage chamber. The switchboard according to claim 1,
A switchboard comprising at least one of a sensor for door opening/closing detection, a warning alarm, a surveillance camera, and a wireless communication means for wirelessly communicating the state of the second storage chamber to an external management device in the second storage chamber. The switchboard according to claim 1,
A switchboard having a cooling fan in the second storage chamber. The switchboard according to claim 1,
The switchboard which equips the 2nd door of the said 2nd accommodation chamber with a display panel. The switchboard according to claim 1,
A switchboard including the external device in the second storage chamber. The switchboard according to claim 1,
A switchboard comprising a transformer for transforming a high voltage and a low voltage in the first accommodation chamber. The switchboard according to claim 8,
The second key is an electronic lock, and a switchboard to which power is supplied from the secondary side of the transformer. The switchboard according to claim 1, wherein the switchboard is a ground transformer including a transformer in the first accommodation chamber. The switchboard according to claim 1 is a switchboard for photovoltaic power generation. The switchboard according to claim 1, wherein the switchboard is configured integrally with the external device. A switchboard that has a transformer that transforms and outputs a first voltage to a second voltage lower than the first voltage, the switchboard supplying power to electronic equipment,
A first door for a first user to access a terminal for outputting the second voltage of the transformer or a device including a transformer and a switch, and
A first key provided on the first door,
A second door for a second user to access a wiring connected to the terminal for outputting the second voltage or the terminal for outputting the second voltage,
A second key provided on the second door, which is different from the first key;
In the area within the second door, any one or more of a device for measuring the power supplied to the electronic device, a fuse, an earth leakage breaker or a wireless communication means for transmitting the state of the electronic device,
Switchboard with. The switchboard according to claim 13,
The electronic device is provided in the area within the second door or the second door,
Supplying power to the electronic device inside the switchboard from the terminal that outputs the second voltage,
At least one of a device for measuring the electric power supplied to the electronic device, a fuse, an earth leakage breaker, or a wireless communication means for transmitting the state of the internal electronic device to the area or door surface in the second door. Switchboard with. The switchboard according to claim 13,
The second key is an electronic lock, and a switchboard to which power is supplied from the secondary side of the transformer.

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