CN212723188U - Arc fault monitoring device - Google Patents
Arc fault monitoring device Download PDFInfo
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- CN212723188U CN212723188U CN202021305545.0U CN202021305545U CN212723188U CN 212723188 U CN212723188 U CN 212723188U CN 202021305545 U CN202021305545 U CN 202021305545U CN 212723188 U CN212723188 U CN 212723188U
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Abstract
The embodiment of the utility model discloses electric arc fault monitoring device, this electric arc fault monitoring device includes: the monitoring system comprises an arc fault monitoring module, a monitoring host, a switching mechanism and an alarm module, wherein the arc fault monitoring module is electrically connected with the switching mechanism, the arc fault monitoring module is electrically connected with a module to be monitored, the arc fault monitoring module is in communication connection with the monitoring host, and the monitoring host is respectively electrically connected with the switching mechanism and the alarm module; the arc fault monitoring module is used for monitoring whether a module to be monitored has a fault arc or not, generating an alarm signal when the fault arc occurs and sending the alarm signal to the monitoring host, and the monitoring host is used for controlling the switching mechanism to be switched off and/or controlling the alarm module to give an alarm when receiving the alarm signal. Whether the electric equipment has the fault arc can be monitored in real time through the device, and an alarm signal is sent out and the electric equipment line is disconnected when the fault arc is monitored, so that the safety of the electric equipment line is ensured, and the occurrence of electrical fire and the like is prevented.
Description
Technical Field
The embodiment of the utility model provides a relate to life power consumption safety technical field, especially relate to an electric arc fault monitoring device.
Background
In a low-voltage distribution system of a building, electrical fire is often caused by gas breakdown or electrical connection looseness caused by electrical insulation aging, damage, air moisture and the like of electrical equipment, power transmission lines and the like, and the life safety of people is seriously influenced. The main cause of fire is the occurrence of a fault arc when gas breakdown or loose electrical connection is caused. Therefore, how to detect the fault arc and take effective protection measures becomes an important problem for preventing and controlling the electrical fire.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric arc fault monitoring device can real-time supervision consumer whether break down the electric arc through the device to send alarm signal and disconnection consumer circuit when monitoring the trouble electric arc.
An embodiment of the utility model provides an electric arc fault monitoring device, this electric arc fault monitoring device includes: the monitoring system comprises an arc fault monitoring module, a monitoring host, a switching mechanism and an alarm module, wherein the switching mechanism is electrically connected with a power transmission line, the arc fault monitoring module is electrically connected with the switching mechanism, the arc fault monitoring module is electrically connected with a module to be monitored, the arc fault monitoring module is in communication connection with the monitoring host, and the monitoring host is respectively and electrically connected with the switching mechanism and the alarm module;
the arc fault monitoring module is used for monitoring whether a module to be monitored has a fault arc or not, generating an alarm signal when the fault arc occurs and sending the alarm signal to the monitoring host, and the monitoring host is used for controlling the switching mechanism to be switched off and/or controlling the alarm module to give an alarm when receiving the alarm signal.
Optionally, the arc fault monitoring device further comprises a plurality of arc fault monitoring groups, each arc fault monitoring group is connected with a networking communication module, each networking communication module is connected with each other through a 485 bus, and each networking communication module is connected with the monitoring host through a 485 bus.
Optionally, each arc fault monitoring group includes a plurality of the arc fault monitoring modules, and each of the arc fault monitoring modules is connected to each other through a 485 bus.
Optionally, the arc fault monitoring module includes a voltage and current detection unit and a control unit, wherein the voltage and current detection unit is electrically connected to the control unit, and the control unit is electrically connected to the monitoring host; the voltage and current detection unit is used for detecting the voltage waveform and the current waveform of the module to be monitored, and the control unit is used for judging whether the voltage waveform and the current waveform detected by the voltage and current detection unit are abnormal or not.
Optionally, the arc fault monitoring module further includes an operational amplification unit and an analog-to-digital signal conversion unit, the operational amplification unit is electrically connected to the voltage and current detection unit and the analog-to-digital signal conversion unit, respectively, and the analog-to-digital signal conversion unit is electrically connected to the control unit; the operational amplification unit is used for amplifying the signal output by the voltage and current detection unit.
Optionally, the voltage and current detection unit is a voltage transformer and a current transformer.
Optionally, the control unit is a single chip microcomputer.
Optionally, the operational amplification unit is an operational amplifier.
Optionally, the arc fault monitoring module further includes a serial communication module, and the serial communication module is electrically connected to the control unit and the monitoring host, respectively.
Optionally, the switching mechanism is a circuit breaker.
The utility model discloses a provide an electric arc fault monitoring device, this electric arc fault monitoring device includes: the monitoring system comprises an arc fault monitoring module, a monitoring host, a switching mechanism and an alarm module, wherein the switching mechanism is electrically connected with a power transmission line, the arc fault monitoring module is electrically connected with the switching mechanism, the arc fault monitoring module is electrically connected with a module to be monitored, the arc fault monitoring module is in communication connection with the monitoring host, and the monitoring host is respectively and electrically connected with the switching mechanism and the alarm module; the arc fault monitoring module is used for monitoring whether a module to be monitored has a fault arc or not, generating an alarm signal when the fault arc occurs and sending the alarm signal to the monitoring host, and the monitoring host is used for controlling the switching mechanism to be switched off and/or controlling the alarm module to give an alarm when receiving the alarm signal. Whether the electric equipment has the fault arc can be monitored in real time through the device, and when the fault arc is monitored, an alarm signal is sent out and the electric equipment line is disconnected, so that the safety of the electric equipment line is ensured, and safety accidents such as electrical fire and the like are prevented.
Drawings
Fig. 1 is a block diagram of an arc fault monitoring apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an arc fault monitoring apparatus according to a second embodiment of the present invention;
fig. 3 is a block diagram of an arc fault monitoring apparatus according to a third embodiment of the present invention;
fig. 4 is an application schematic diagram of an arc fault monitoring apparatus according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a block diagram of an arc fault monitoring apparatus according to an embodiment of the present invention, referring to fig. 1, including: the monitoring system comprises an arc fault monitoring module 100, a switching mechanism 10, a monitoring host 20 and an alarm module 30, wherein the switching mechanism 10 is electrically connected with a power transmission line L0, the arc fault monitoring module 100 is electrically connected with the switching mechanism 10, the arc fault monitoring module 100 is electrically connected with a module to be monitored 40, the arc fault monitoring module 100 is in communication connection with the monitoring host 20, and the monitoring host 20 is respectively and electrically connected with the switching mechanism 10 and the alarm module 30;
the arc fault monitoring module 100 is configured to monitor whether a module to be monitored has a fault arc, generate an alarm signal when the fault arc occurs, and send the alarm signal to the monitoring host 20, where the monitoring host 20 is configured to control the switching mechanism 10 to be turned off and/or control the alarm module 30 to alarm when receiving the alarm signal.
The module to be monitored can be power-consuming equipment and circuits such as power distribution equipment, circuits, lighting systems, lighting lamps and power strip. The alarm module 30 may be a sound and light alarm module. The switching mechanism 10 may be a circuit breaker, a relay switch, or the like. The switching mechanism 10 is used for controlling the switching mechanism 10 to be switched off by the monitoring host 20 when the arc fault monitoring module 100 monitors that the module to be monitored has a fault arc, so as to protect the module to be monitored and the circuit thereof.
In the technical solution of this embodiment, the operating principle of the arc fault monitoring apparatus is as follows: referring to fig. 1, the switching mechanism 10 is electrically connected to a power line L0, the arc fault monitoring module 100 is connected between the switching mechanism 10 and the module to be monitored 40, the arc fault monitoring module is connected to the monitoring host 20 through a 485 bus, and the monitoring host 20 is electrically connected to the switching mechanism 10 and the alarm module 30. The arc fault monitoring module 100 monitors whether a fault arc occurs in the module to be monitored 40 and the line thereof which are correspondingly connected with the arc fault monitoring module 100 in real time, when the arc fault monitoring module 100 detects that the fault arc occurs in the module to be monitored 40, the arc fault monitoring module 100 generates an alarm signal and sends the alarm signal to the monitoring host 20, and the monitoring host 20 controls the switching mechanism 10 to be switched off and controls the alarm module 30 to alarm after receiving the alarm signal. Therefore, whether the electric equipment has the fault arc or not can be monitored in real time through the device, and when the fault arc is monitored, an alarm signal is sent out and the electric equipment line is disconnected, so that the safety of the electric equipment line is ensured, and safety accidents such as electrical fire and the like are prevented.
The technical solution of this embodiment is to provide an arc fault monitoring apparatus, which includes: the monitoring system comprises an arc fault monitoring module, a monitoring host, a switching mechanism and an alarm module, wherein the switching mechanism is electrically connected with a power transmission line, the arc fault monitoring module is electrically connected with the switching mechanism, the arc fault monitoring module is electrically connected with a module to be monitored, the arc fault monitoring module is in communication connection with the monitoring host, and the monitoring host is respectively and electrically connected with the switching mechanism and the alarm module; the arc fault monitoring module is used for monitoring whether a module to be monitored has a fault arc or not, generating an alarm signal when the fault arc occurs and sending the alarm signal to the monitoring host, and the monitoring host is used for controlling the switching mechanism to be switched off and/or controlling the alarm module to give an alarm when receiving the alarm signal. Whether the electric equipment has the fault arc can be monitored in real time through the device, and when the fault arc is monitored, an alarm signal is sent out and the electric equipment line is disconnected, so that the safety of the electric equipment line is ensured, and safety accidents such as electrical fire and the like are prevented.
Example two
Fig. 2 is a schematic structural diagram of an arc fault monitoring apparatus provided in the second embodiment of the present invention, and referring to fig. 2, the arc fault monitoring apparatus further includes a plurality of arc fault monitoring groups, such as the arc fault monitoring group 210, the arc fault monitoring group 220, the arc fault monitoring group 230, the arc fault monitoring group 240, the arc fault monitoring group 250, and the arc fault monitoring group 260 in fig. 2. Each arc fault monitoring group is connected to a networking communication module, for example, the arc fault monitoring group 210 in fig. 2 is connected to the networking communication module 213, the arc fault monitoring group 220 is connected to the networking communication module 223, the arc fault monitoring group 230 is connected to the networking communication module 233, the arc fault monitoring group 240 is connected to the networking communication module 243, the arc fault monitoring group 250 is connected to the networking communication module 253, and the arc fault monitoring group 260 is connected to the networking communication module 263. Each networking communication module is connected with the monitoring host through a 485 bus, and each networking communication module is connected with the monitoring host through a 485 bus, for example, the networking communication module 213, the networking communication module 223 and the networking communication module 233 are connected through a 485 bus and connected with the monitoring host 20 through a 485 bus, and the networking communication module 243, the networking communication module 253 and the networking communication module 263 are connected through a 485 bus and connected with the monitoring host 20 through a 485 bus.
Optionally, with continued reference to fig. 2, each arc fault monitoring group includes a plurality of arc fault monitoring modules, each arc fault monitoring module connected to each other by a 485 bus.
For example, referring to fig. 2, the arc fault monitoring group 210 includes arc fault monitoring modules 211, …, and 212, and the arc fault monitoring group 220 includes arc fault monitoring modules 221, …, and arc fault monitoring module 222, wherein the arc fault monitoring module 211 and the arc fault monitoring module 212 are connected by a 485 bus, and the arc fault monitoring module 221 and the arc fault monitoring module 222 are connected by a 485 bus.
EXAMPLE III
Fig. 3 is a block diagram of an arc fault monitoring apparatus provided in the third embodiment of the present invention, and referring to fig. 3, the arc fault monitoring module includes a voltage and current detection unit 110 and a control unit 120, wherein the voltage and current detection unit 110 is electrically connected to the control unit 120, and the control unit 120 is electrically connected to the monitoring host 20; the voltage and current detection unit 110 is configured to detect a voltage waveform and a current waveform of the module 10 to be monitored, and the control unit 120 is configured to determine whether the voltage waveform and the current waveform detected by the voltage and current detection unit 110 are abnormal.
The control unit 120 stores an abnormal voltage waveform and an abnormal current waveform during a fault arc which occurs in history, and in the monitoring process, the control unit 120 compares the voltage waveform of the module to be monitored 40 detected by the voltage and current detection unit 110 with the abnormal voltage waveform during the fault arc which occurs in history to see whether the voltage waveforms are abnormal or not; the current waveform of the module to be monitored 40 detected by the voltage and current detection unit 110 is compared with the abnormal current waveform during the fault arc which occurs in history to see whether the current waveform is abnormal.
Optionally, referring to fig. 3, the arc fault monitoring module further includes an operational amplification unit 130 and an analog-to-digital signal conversion unit 140, the operational amplification unit 130 is electrically connected to the voltage and current detection unit 110 and the analog-to-digital signal conversion unit 140, respectively, and the analog-to-digital signal conversion unit 140 is electrically connected to the control unit 120; the operational amplifier 130 is configured to amplify the signal output by the voltage/current detector 110.
The operational amplifier unit 130 is configured to amplify the voltage signal and the current signal collected by the voltage and current detection unit 110, so as to improve the stability of signal transmission. The analog-to-digital signal conversion unit 140 is configured to convert the analog signal output by the operational amplification unit 130 into a digital signal and output the digital signal to the control unit 120.
Alternatively, the voltage current detection unit 110 is a voltage transformer and a current transformer.
The voltage transformer is used for detecting the output voltage waveform of the module to be monitored, and the current transformer is used for detecting the output current waveform of the module to be monitored.
Optionally, the control unit 120 is a single chip microcomputer.
The control unit 120 may also be a PLC (Programmable Logic Controller).
Alternatively, the operational amplification unit 130 is an operational amplifier.
Optionally, the arc fault monitoring module further includes a serial communication module 150, and the serial communication module 150 is electrically connected to the control unit 120 and the monitoring host 20, respectively.
Optionally, the serial port communication module 150 is a 485 communication module.
The serial port communication module 150 may be a full-duplex 485 chip.
In the technical solution of this embodiment, the implementation process of the arc fault monitoring module is as follows: referring to fig. 3, the switching mechanism 10 is connected between the module to be monitored 40 and the power transmission line L, N, the voltage/current detection unit 110 is connected between the switching mechanism 10 and the module to be monitored 40, the voltage/current detection unit 110 detects the output voltage waveform and the current waveform of the module to be monitored 40 in real time, amplifies the detected voltage waveform and current waveform by the operational amplification unit 130 and outputs the amplified voltage waveform and current waveform to the analog-digital signal conversion unit 140, the analog-digital signal conversion unit 140 converts the signals into digital quantity signals and outputs the digital quantity signals to the control unit 120, the control unit 120 compares the voltage waveform with the historical abnormal voltage waveform during fault arc to see whether the voltage waveform is abnormal, compares the current waveform with the historical abnormal current waveform during fault arc to see whether the current waveform is abnormal, and when the abnormal voltage waveform and/or abnormal current waveform are/is/are, the control unit 120 sends an alarm signal and outputs the alarm signal to the monitoring host 20 through the serial port communication module 150, the monitoring host controls the switching mechanism 10 to be disconnected after receiving the alarm signal, so that the module to be monitored 40 is disconnected from the power transmission line to protect the module to be monitored 40 and circuits thereof, and meanwhile, the monitoring host 20 controls the alarm module 30 to send an alarm signal to warn relevant personnel. Therefore, whether the electric equipment has the fault arc or not can be monitored in real time through the device, and when the fault arc is monitored, an alarm signal is sent out and the electric equipment line is disconnected, so that the safety of the electric equipment line is ensured, and safety accidents such as electrical fire and the like are prevented.
Fig. 4 is an application schematic diagram of an arc fault monitoring apparatus provided in the third embodiment of the present invention, referring to fig. 4, the switching mechanism 10 can be a circuit breaker 11, the circuit breaker 11 and the arc fault monitoring module 100 have a plurality of, and the module to be monitored can be power consumers and lines such as power distribution equipment, lines, lighting system, lighting lamps, power strip, etc., for example, the power distribution 1, the lighting 2 and the socket 3 in fig. 4. For example, referring to fig. 4, a circuit breaker 11 is electrically connected to the arc fault monitoring modules 100, each circuit breaker 11 is electrically connected to the monitoring host 20, an arc fault monitoring module 100 is connected in series between a circuit breaker 11 and a module to be monitored, each arc fault monitoring module 100 is communicatively connected to the monitoring host 20, for example, the arc fault monitoring module is connected to the monitoring host 20 through a 485 bus, and the alarm module 30 is electrically connected to the monitoring host 20. Each arc fault monitoring module 100 monitors whether a fault arc occurs in a module to be monitored and a line thereof which are correspondingly connected with the arc fault monitoring module in real time, when the arc fault monitoring module detects that the fault arc occurs in the module to be monitored, the arc fault monitoring module generates an alarm signal and sends the alarm signal to the monitoring host 20, and the monitoring host 20 controls the circuit breaker 11 to be disconnected and controls the alarm module 30 to alarm after receiving the alarm signal. Therefore, whether the electric equipment has the fault arc or not can be monitored in real time through the device, and when the fault arc is monitored, an alarm signal is sent out and the electric equipment line is disconnected, so that the safety of the electric equipment line is ensured, and safety accidents such as electrical fire and the like are prevented.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An arc fault monitoring device, comprising: the monitoring system comprises an arc fault monitoring module, a monitoring host, a switching mechanism and an alarm module, wherein the switching mechanism is electrically connected with a power transmission line, the arc fault monitoring module is electrically connected with the switching mechanism, the arc fault monitoring module is electrically connected with a module to be monitored, the arc fault monitoring module is in communication connection with the monitoring host, and the monitoring host is respectively and electrically connected with the switching mechanism and the alarm module;
the arc fault monitoring module is used for monitoring whether a module to be monitored has a fault arc or not, generating an alarm signal when the fault arc occurs and sending the alarm signal to the monitoring host, and the monitoring host is used for controlling the switching mechanism to be switched off and/or controlling the alarm module to give an alarm when receiving the alarm signal.
2. The arc fault monitoring device of claim 1, further comprising a plurality of arc fault monitoring groups, wherein each arc fault monitoring group is connected with a networking communication module, each networking communication module is connected with each other through a 485 bus, and each networking communication module is connected with the monitoring host through a 485 bus.
3. The arc fault monitoring device of claim 2, wherein each arc fault monitoring group comprises a plurality of the arc fault monitoring modules, and each arc fault monitoring module is connected to each other by a 485 bus.
4. The arc fault monitoring device of claim 1, wherein the arc fault monitoring module comprises a voltage current detection unit and a control unit, wherein the voltage current detection unit is electrically connected with the control unit, and the control unit is electrically connected with the monitoring host; the voltage and current detection unit is used for detecting the voltage waveform and the current waveform of the module to be monitored, and the control unit is used for judging whether the voltage waveform and the current waveform detected by the voltage and current detection unit are abnormal or not.
5. The arc fault monitoring device of claim 4, wherein the arc fault monitoring module further comprises an operational amplification unit and an analog-to-digital signal conversion unit, the operational amplification unit is electrically connected with the voltage current detection unit and the analog-to-digital signal conversion unit respectively, and the analog-to-digital signal conversion unit is electrically connected with the control unit; the operational amplification unit is used for amplifying the signal output by the voltage and current detection unit.
6. The arc fault monitoring device of claim 4, wherein the voltage current detection unit is a voltage transformer and a current transformer.
7. The arc fault monitoring device of claim 4, wherein the control unit is a single chip microcomputer.
8. The arc fault monitoring device of claim 5, wherein the operational amplification unit is an operational amplifier.
9. The arc fault monitoring device of claim 4, wherein the arc fault monitoring module further comprises a serial communication module, and the serial communication module is electrically connected with the control unit and the monitoring host respectively.
10. The arc fault monitoring device of claim 1, wherein the switching mechanism is a circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305545.0U CN212723188U (en) | 2020-07-06 | 2020-07-06 | Arc fault monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305545.0U CN212723188U (en) | 2020-07-06 | 2020-07-06 | Arc fault monitoring device |
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| CN212723188U true CN212723188U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300337A (en) * | 2021-05-24 | 2021-08-24 | 深圳供电局有限公司 | Feeder protection warning system on same generating line in transformer substation |
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2020
- 2020-07-06 CN CN202021305545.0U patent/CN212723188U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300337A (en) * | 2021-05-24 | 2021-08-24 | 深圳供电局有限公司 | Feeder protection warning system on same generating line in transformer substation |
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