JP2018082565A - Earthquake sensitive shutoff system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake sensitive shutoff system capable of immediately shutting off a particular electric circuit if an earthquake sensitive relay senses an earthquake even if the earthquake sensitive relay is in cooperation with a HEMS.SOLUTION: An earthquake sensitive relay 3 includes, in addition to a pseudo ground leakage output unit 35 for implementing delayed shutoff, an external communication unit 38 for immediately outputting an earthquake detection signal upon detecting an earthquake, and also includes a communication measuring unit 4 and an earthquake sensitive communication unit 5, which relays the output signal from the external communication unit 38 and transmitting it to a HEMS apparatus 11. The earthquake sensitive communication unit 5 includes a first output unit 53 for performing shutoff operation of a second breaker 2b included in a branch breaker 2 upon receiving the earthquake detection signal.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seismic isolation system that includes an earthquake-sensitive relay and interrupts an electric circuit when an earthquake of a predetermined seismic intensity or higher occurs.

In order to prevent the occurrence of energized fires, distribution boards that install a seismic device (seismic relay) on the distribution board and shut off the main breaker when an earthquake of a certain seismic intensity or more occurs are spreading. For example, in Patent Document 1, a seismic relay having an earth leakage output unit that generates a pseudo-leakage after a certain period of time after receiving an earthquake in the distribution board and shuts off the main breaker is installed. The whole was shut off.
On the other hand, there is a power management system that can display the power usage state in the dwelling unit by displaying the power usage state in the dwelling unit on the display means that constitutes a part of the HEMS by using the HEMS built in the dwelling unit (for example, Patent Documents). 2).
Here, HEMS is an abbreviation for Home Energy Management System. It communicates with home appliances and electrical equipment to “visualize” usage of electricity and gas on a monitor screen, etc., and “automatic control” of home appliances. It is a known system.

JP2015-173522A Japanese Patent Laying-Open No. 2015-171199

As mentioned above, the provision of a seismic relay enabled the main breaker to be shut off when an earthquake occurs, greatly resolving the problem of fire due to a short circuit in the indoor electrical circuit due to damage to the building caused by the earthquake. I was able to move forward.
Moreover, since the seismic relay of the above-mentioned patent document 1 has a signal output unit that outputs a signal immediately in response to the occurrence of an earthquake in addition to the leakage output unit, it immediately shuts off in response to the occurrence of an earthquake. For a circuit that is preferable, the electric circuit could be interrupted by the signal from the signal output unit.
However, when the HEMS and the seismic relay are linked to notify the occurrence of an earthquake to the outside, this signal output unit is used for linkage, and thus cannot be used as a signal for immediate interruption.

  Therefore, in view of such problems, the present invention provides a seismic interrupting system that can immediately shut off a specific electric circuit when the seismic relay detects an earthquake even when the seismic relay is linked with HEMS. It is intended to provide.

In order to solve the above problems, the invention of claim 1 is directed to a main circuit breaker for interrupting a main electric circuit connected to a commercial power source and a plurality of electric lines for interrupting a branch electric circuit connected to the secondary side of the main circuit breaker. The seismic relay system includes a branch breaker and a seismic relay that senses the occurrence of an earthquake. Has a signal output unit that immediately outputs an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher is detected, in addition to a delay cutoff output unit that performs delay cutoff, while relaying the output signal of the signal output unit to HEMS In addition to the function of transmitting to the equipment, the HE has a shut-off signal output unit that receives a seismic detection signal and shuts off a breaker with an external shut-off function that forms part of a branch breaker and shuts off by an external signal. Characterized in that it comprises an S communication means.
According to this configuration, even if the signal output unit of the seismic relay is used for communication with the HEMS, the HEMS communication means that relays the signal receives the earthquake detection signal of the seismic relay and shuts off the branch breaker. Since it has a signal output section, in addition to delay interruption, immediate interruption can also be implemented.
The HEMS device is one of the devices constituting the HEMS and is a device having a display / operation function such as a tablet terminal.

According to a second aspect of the present invention, in the configuration according to the first aspect, the signal output unit has a function of receiving a setting signal for setting the operation of the seismic relay in addition to the output of the earthquake detection signal from the outside. And the HEMS communication means connected to the external communication unit and communicated with the seismic communication unit having the cutoff signal output unit and the HEMS device, and obtained from the current sensor provided in each branch electric circuit It consists of a communication measurement unit that transmits power usage information to the HEMS device, and both the seismic communication unit and the communication measurement unit enable mutual communication and manage communication between the HEMS device and the seismic relay. Having a communication management unit and setting the predetermined seismic intensity and the time to delay delay with the HEMS equipment, set the seismic relay via the communication measurement unit and seismic communication unit Broadcast is transmitted, characterized in that the setting of the seismic relay is made.
According to this configuration, since the HEMS communication unit is configured by the seismic communication unit including the cutoff signal output unit and the communication measurement unit that transmits the power usage information of the branch circuit, the seismic relay and the HEMS device There is no need to provide a separate device for relaying communication. Moreover, since the setting of the seismic intensity for determining the occurrence of an earthquake and the time for delaying interruption can be performed by the HEMS device, the seismic relay can be set by a simple operation.

According to a third aspect of the present invention, in the configuration according to the second aspect, when the communication measurement unit receives the earthquake detection signal from the HEMS device, the communication measurement unit controls the seismic communication unit to output the cutoff signal from the cutoff signal output unit. It is characterized by.
According to this configuration, the seismic communication unit can immediately shut off a specific branch breaker in response to an earthquake detection signal transmitted from the outside even if the seismic relay does not sense an earthquake. It is preferable for safety.

According to a fourth aspect of the present invention, in the configuration according to the second or third aspect, an outlet unit with a cutoff function is provided in a part of the branch circuit, which has a cutoff function and enables a direct load connection. The seismic communication unit has an interruption signal output unit for receiving an earthquake detection signal and causing the outlet unit with an interruption function to be interrupted.
According to this configuration, when an earthquake occurs, the outlet unit with a shut-off function shuts off immediately, so other electrical equipment connected to a common branch circuit is also linked to turn off electrical equipment that requires immediate shut-off operation. This can solve the problem of turning off and is convenient.

  According to the present invention, even when the signal output unit of the seismic relay is used for communication with the HEMS, the HEMS communication means that relays the signal receives the earthquake detection signal of the seismic relay and shuts off the branch breaker. Since it has a signal output section, in addition to delay interruption, immediate interruption can also be implemented.

It is a system configuration figure showing an example of a seismic isolation system concerning the present invention. It is a block diagram of a seismic relay. It is a block diagram of a communication measurement unit. It is a block diagram of a seismic communication unit. It is connection explanatory drawing of an outlet socket control unit.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of a seismic isolation system according to the present invention, wherein 1 is a commercial power source comprising a drawn single-phase three-wire circuit (voltage phases X and Y and neutral phase N) on the primary side. The main breaker connected to the main circuit breaker 2 is a branch breaker for cutting off the individual branch circuits branched from the main electric circuit M formed on the secondary side of the main circuit breaker 1. A seismic relay that outputs an earthquake detection signal and generates a pseudo-leakage in the main circuit M, 4 is a communication measurement unit that transmits information on the power used in the dwelling unit to the external HEMS device 11, and 5 is output from the seismic relay 3. An earthquake-sensing communication unit 6 that shuts off a specific branch breaker 2 in response to an earthquake detection signal, and an outlet control unit 6 that shuts off a plurality of outlet units 12 with a cutoff function provided at the end of the branch circuit.

  Note that the outlet unit 12 with a blocking function includes a blocking mechanism section that blocks the electric circuit, and has a function of blocking the outlet output by an external operation (in this case, the operation of the seismic communication unit 5).

A plurality of branch breakers 2 are installed in accordance with the number of branch circuit lines, and a breaker group (first breaker 2a group) that is not controlled by an external signal, and a breaker group (first breaker group) that is controlled by the seismic communication unit 5 2 groups of breakers 2b).
For this reason, the first breaker 2a may be a branch breaker having a simple structure as compared with the prior art, but the second breaker 2b is an external unit having an external control terminal (not shown) for inputting a control signal of the seismic communication unit 5. Breaker with shut-off function.

  The seismic relay 3, the communication measuring unit 4, the seismic communication unit 5, and the outlet control unit 6 are assembled inside the distribution board B and constitute the main electric circuit M arranged on the secondary side of the main circuit breaker 1. Along with the first breaker 2a and the second breaker 2b, the seismic relay 3, the communication measuring unit 4, and the seismic communication unit 5 are connected to the bar 9 and supplied with power. Note that the outlet control unit 6 can be configured with only contacts that do not require a power source, and therefore may be disposed outside the distribution board B.

  The seismic relay 3 is connected to one voltage phase Y on the primary side of the main breaker 1 via the transmission line L1, and is connected to the seismic communication unit 5 via the transmission line L3. The seismic communication unit 5 is connected to the communication measurement unit 4 via the transmission line L4, and is connected to the outlet control unit 6 via the transmission line L6.

FIG. 2 shows a block diagram of the seismic relay 3. As shown in FIG. 2, the seismic relay 3 causes an acceleration sensor 31, a seismic intensity setting unit 33 for setting a seismic intensity to be determined as an occurrence of an earthquake, and generates a pseudo-leakage after a certain time from the occurrence of an earthquake, thereby causing the main breaker 1 to perform a delay cutoff operation Cut-off time setting unit 34 for setting time, pseudo-leakage output unit 35 for generating pseudo-leakage, buzzer 36a for issuing alarm sound, LED 36b for notifying light emission, test / reset button 37 for performing test / reset of earthquake detection operation, If it is determined that an earthquake has occurred, the seismic intensity of the earthquake is determined from the output of the external communication unit 38 and the acceleration sensor 31 that outputs a signal. If it is determined that the seismic intensity is greater than the set seismic intensity, it is determined that an earthquake has occurred and various control signals are output. In addition, an MCU (Micro Controller Unit) 39 for controlling the whole seismic relay 3 is provided.
The MCU 39 is a memory 39a such as a ROM or a RAM, and an integrated circuit incorporating peripheral functions such as I / O. The memory 39a has a delay cutoff time for generating, for example, a set seismic intensity threshold or a pseudo-leakage. Etc. are memorized.

  The pseudo-leakage output unit 35 is connected to one voltage phase Y of the main circuit M on the primary side of the main breaker 1 by the transmission line L1. Further, an external communication unit 38 is connected to the seismic communication unit 5 via the transmission line L3. The external communication unit 38 includes an interface circuit that transmits a predetermined signal from the outside to the MCU 39 in addition to the signal output to the outside.

  In the seismic relay 3, a seismic intensity (predetermined seismic intensity) is set by the seismic intensity setting unit 33 to output an earthquake detection signal. The interruption time setting unit 34 sets a time for delay interruption by generating a pseudo electric leakage. For example, when the MCU 39 determines that an earthquake has occurred, an earthquake detection signal is immediately output from the external communication unit 38, but for example, the pseudo-leakage output unit 35 outputs a certain time (for example, 3 minutes) after outputting the earthquake detection signal. After elapses, a pseudo-leakage signal for generating a pseudo-leakage in the main electric circuit M is output. When the earthquake detection signal is output, the buzzer 36a sounds and the LED 36b blinks.

  In addition to controlling the seismic relay 3 as a whole, the MCU 39 communicates with the external HEMS device 11 via the seismic communication unit 5 and the communication measurement unit 4, and detects seismic intensity information in addition to transmitting an earthquake detection signal. Is transmitted to the HEMS device 11. On the other hand, it is possible to set the seismic intensity as a threshold for outputting an earthquake detection signal from the HEMS device 11 and the time for delay interruption by generating a pseudo electric leakage.

  Here, the pseudo-leakage signal output from the pseudo-leakage output unit 35 of the seismic relay 3 will be described. By connecting the pseudo earth leakage output unit 35 to the primary side of the main breaker 1 via the transmission line L1, an electric circuit that does not pass through the main breaker 1 between the secondary side electric circuit and the primary side electric circuit of the main breaker 1 (simulated When the seismic relay 3 is turned on and energized, the main circuit breaker 1 determines that a leakage has occurred and performs a cut-off operation. This on operation is referred to as outputting a pseudo-leakage signal.

FIG. 3 shows a block diagram of the communication measurement unit 4. As shown in FIG. 3, the communication measurement unit 4 is installed in the main current sensor 13 for detecting the current flowing through the main breaker 1 and the branch current sensor 14 for detecting individual branch currents installed in the individual branch breakers 2. An input current information input unit 41, an internal communication IF 42 to which the seismic communication unit 5 is connected, an external communication IF 43 that communicates with the HEMS device 11 through, for example, a LAN, a communication measurement unit CPU 44 that controls the communication measurement unit 4 as a whole, etc. It has.
In addition, 21 is an extended measurement unit that measures the generated power and outputs data to a distributed power generation device such as solar power generation (not shown), and 22 is a pulse measurement unit that calculates the amount of water / gas used. The measurement unit is also connected to the internal communication IF 42, and the generated power information and water / gas usage data received by the communication measurement unit CPU 44 are transmitted to the HEMS device 11.

  In this way, the communication measurement unit 4 transmits power usage information, generated power information, and water / gas usage information to the connected external HEMS device 11. The communication measurement unit CPU 44 manages the communication between the HEMS device 11 and the seismic relay 3, and senses such as earthquake detection signals and seismic intensity information output from the seismic relay 3 received via the seismic communication unit 5. When the seismic information is transmitted to the HEMS device 11, the seismic communication unit 5 is received from the HEMS device 11 when a setting signal such as a predetermined seismic intensity setting for determining the occurrence of the earthquake of the seismic relay 3 or a delay operation time setting is received. Is transmitted to the seismic relay 3 via.

  FIG. 4 shows a block diagram of the seismic communication unit 5. As shown in FIG. 4, the seismic communication unit 5 includes a first communication IF 51 that communicates with the seismic relay 3 via the transmission line L3, a second communication IF 52 that communicates with the communication measurement unit 4 via the transmission line L4, In response to the detection signal, the first output unit 53 for immediately shutting off a specific branch breaker (group of second breakers 2b) 2, the second output unit 54 for shutting off the outlet unit 12 with the shut-off function, and the state An LED 55 for display, a seismic communication unit CPU 56 for controlling the seismic communication unit 5 and the like are provided.

The first output unit 53 is connected to the second breaker 2b via the transmission line L5, and the second output unit 54 is connected to the outlet control unit 6 via the transmission line L6. A plurality of outlet units 12 with a blocking function are connected via the outlet control unit 6 and their blocking operation is controlled.
The control signal output from the seismic communication unit 5 to the second breaker 2b is an a-contact signal, and the second breaker 2b receives the a-contact signal and performs a blocking operation.

  The seismic communication unit CPU 56 manages communication between the HEMS device 11 and the seismic relay 3, and performs a predetermined seismic intensity setting of the seismic relay 3 received from the HEMS device 11 via the communication measurement unit 4. A setting signal is transmitted to the seismic relay 3. At this time, the seismic relay 3 is converted into a signal that can be recognized and transmitted.

FIG. 5 is a connection explanatory diagram of the outlet control unit 6 and shows a specific connection between the seismic communication unit 5 and the individual outlet units 12 with a blocking function. The outlet control unit 6 has a function as a relay terminal block, and is connected to the outlet unit 12 with a cutoff function to be controlled by a transmission line L7.
Specifically, a b-contact signal is transmitted as a cutoff signal from the seismic communication unit 5 to the outlet control unit 6, and each output section of the outlet control unit 6 is connected in series. The b-contact signal is relayed and output. Is done. In response to this signal, each outlet unit 12 with a blocking function performs a blocking operation.

  The seismic isolation system configured as described above operates as follows in response to the occurrence of an earthquake. If an earthquake occurs in a state where commercial power is being supplied to the electrical equipment in the dwelling unit, the acceleration sensor 31 detects it and the MCU 39 determines the seismic intensity. When the determined seismic intensity is an earthquake equal to or greater than the seismic intensity set in advance by the seismic intensity setting unit 33 or the like as a threshold (for example, seismic intensity of 5 or less), the MCU 39 performs the following control.

First, an earthquake detection signal is immediately output from the external communication unit 38, the buzzer 36a rings, and the LED 36b blinks. Then, the output earthquake detection signal is transmitted to the seismic communication unit 5.
Thereafter, when a certain time (delay cut-off time) set in advance by the cut-off time setting unit 34 or the like has elapsed, the pseudo-fault leakage output unit 35 outputs a pseudo-fault. That is, the operation for generating a pseudo-leakage is started. As a result, the main breaker 1 is cut off, the main electric circuit M is cut off from the commercial power supply, and all branch electric circuits are cut off.

On the other hand, the seismic communication unit 5 that has received the earthquake detection signal receives the earthquake detection signal and outputs a blocking signal to the group of second breakers 2b connected to the first output unit 53 to perform a blocking operation. . In addition, a cutoff signal is output from the second output unit 54 to the outlet unit 12 with a cutoff function via the outlet control unit 6. As a result, before the main breaker 1 performs the shut-off operation, all the outlet units 12 with the shut-off function connected to the group of second breakers 2b and the outlet control unit 6 perform the shut-off operation.
Furthermore, the seismic communication unit 5 transmits earthquake occurrence information to the communication measurement unit 4. The communication measurement unit 4 that has received the earthquake occurrence information transmits the information to the HEMS device 11.

In this way, even if the external communication unit 38 of the seismic relay 3 is used for communication with the HEMS, if the seismic relay 3 senses an earthquake and outputs an earthquake detection signal, the seismic communication unit 5 is connected to the branch breaker 2. Since a shut-off signal for shutting off is output, in addition to delayed shut-off, immediate shut-off can be performed, and an electric stove or the like that is likely to cause a fire due to an earthquake can be shut off immediately.
And the HEMS communication means is comprised by the seismic communication unit 5 provided with the 1st output part 53 and the 2nd output part 54 which are interruption | blocking signal output parts, and the communication measurement unit 4 which transmits the use electric power information of a branch electric circuit. Therefore, it is not necessary to separately provide a device that relays communication between the seismic relay 3 and the HEMS device 11. Moreover, since the HEMS apparatus 11 can set the seismic intensity determined as the occurrence of an earthquake and the time for delaying interruption, the seismic relay can be set with a simple operation.
Further, since the outlet unit 12 with a shut-off function immediately shuts off when an earthquake occurs, other electrical equipment connected to a common branch circuit is also turned off in conjunction with the electrical equipment that requires immediate shut-off operation. It is easy to solve the problem.

The HEMS device 11 is installed in a meteorological agency that monitors the occurrence of an earthquake, and an external server (not shown) that outputs an earthquake occurrence signal corresponding to the earthquake detection signal output by the seismic relay 3 when an earthquake is detected. When an earthquake occurrence signal is transmitted from the external server to the HEMS device 11, the communication measurement unit 4 recognizes it and operates as follows.
The communication measurement unit CPU 44 outputs a signal for causing the seismic communication unit to perform an immediate shut-off control, and the seismic communication unit CPU 56 that has received this signal from the first output unit 53 and the second output unit 54. A shut-off signal is output to shut off the second breaker 2b and the outlet unit 12 with the shut-off function.
In this way, even if the seismic relay 3 does not detect an earthquake, the specific breaker (second breaker 2b group) and the outlet unit 12 with a shut-off function immediately shut off in response to information on occurrence of an earthquake from the outside. Therefore, even if a fault occurs in the seismic relay 3, the electric circuit to be immediately interrupted can be surely interrupted, which is preferable in terms of safety.

In the above embodiment, the communication measurement unit 4 and the seismic communication unit 5 are separated from each other, but may be configured integrally. In addition, although the outlet control unit 6 that shuts down the outlet unit 12 with the blocking function is provided, when there are few outlet units with the blocking function to be installed, the outlet units 12 with the blocking function are connected in series, and one end is sensed. You may connect directly to the seismic communication unit 5.
Further, the seismic relay 3 includes an external communication unit 38 for transmitting / receiving signals, but it may be a terminal only for outputting an earthquake detection signal, and can be immediately shut down upon occurrence of an earthquake. The device 11 can be notified of the occurrence of an earthquake.

  1 ... Main trunk breaker 2 .... Branch breaker 2a ... Second breaker (breaker with external shut-off function) 3 .... Seismic relay 4 .... Communication measuring unit 5 .... Seismic communication unit 6 ··· Outlet control unit, 11 ·· HEMS equipment, 12 ·· Outlet unit with cutoff function, 13 ·· Main current sensor, 14 ·· Branch current sensor, 33 ·· Seismic intensity setting unit, 34 ·· Offset time setting unit, 35..Pseudo-leakage output unit (delay cutoff output unit), 38..External communication unit (signal output unit), 39..MCU (signal control unit), 39a..Memory, 44..Communication measurement unit CPU (communication) Management unit), 53 ··· First output unit (cut-off signal output unit), 54 ··· Second output unit (cut-off signal output unit), 56 · · Seismic communication unit CPU (communication management unit), B ··· Electric board.

Claims (4)

A main circuit breaker for interrupting a main electric circuit connected to a commercial power source, a plurality of branch circuit breakers for interrupting a branch electric circuit connected to a secondary side of the main circuit breaker, and a seismic sensing relay for detecting an earthquake occurrence; When the seismic relay detects an earthquake of a predetermined seismic intensity or higher, the seismic shut-off system delays the main breaker after that,
While the seismic relay has a signal output unit that immediately outputs an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher is detected, in addition to the delay cutoff output unit that performs the delay cutoff.
In addition to the function of relaying the output signal of the signal output unit and transmitting it to the HEMS device, the breaker with an external cutoff function that receives the earthquake detection signal and forms a part of the branch breaker and shuts off by an external signal. A seismic-sensing cutoff system comprising a HEMS communication means having a cutoff signal output unit for shutting off the power. The signal output unit is an external communication unit having a function of receiving a setting signal for setting the operation of the seismic relay in addition to the output of the earthquake detection signal from the outside,
The HEMS communication means is connected to the external communication unit and includes the cutoff signal output unit;
A communication measuring unit that communicates with the HEMS device and transmits power usage information obtained from a current sensor provided in each branch circuit to the HEMS device;
Both the seismic communication unit and the communication measurement unit enable communication with each other, and have a communication management unit that manages communication between the HEMS device and the seismic relay,
When the setting of the predetermined seismic intensity and the delay cut-off time is performed by the HEMS device, setting information is transmitted to the seismic relay via the communication measurement unit and the seismic communication unit, and the seismic relay The seismic isolation system according to claim 1, wherein:   The seismic sensing device according to claim 2, wherein the communication measurement unit controls the seismic sensing communication unit to output a shut-off signal from the shut-off signal output unit when receiving the earthquake detection signal from the HEMS device. Shut-off system. A part of the branch circuit is connected to a socket unit with a cutoff function that has a cutoff function and enables direct connection of a load.
The seismic-sensing communication system according to claim 2 or 3, wherein the seismic-sensing communication unit has a shut-off signal output unit for receiving the seismic detection signal to shut off the outlet unit with a shut-off function.

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