CN112653109A - Automatic low-voltage zero line fault isolation device - Google Patents
Automatic low-voltage zero line fault isolation device Download PDFInfo
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- CN112653109A CN112653109A CN202011545779.7A CN202011545779A CN112653109A CN 112653109 A CN112653109 A CN 112653109A CN 202011545779 A CN202011545779 A CN 202011545779A CN 112653109 A CN112653109 A CN 112653109A
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- 238000002955 isolation Methods 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 40
- 230000002159 abnormal effect Effects 0.000 claims abstract description 23
- 238000010248 power generation Methods 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 12
- 230000005674 electromagnetic induction Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- RIMXLXBUOQMDHV-UHFFFAOYSA-N 1,2-dichloro-4-(2-chlorophenyl)benzene Chemical compound C1=C(Cl)C(Cl)=CC=C1C1=CC=CC=C1Cl RIMXLXBUOQMDHV-UHFFFAOYSA-N 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16547—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies voltage or current in AC supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a low-voltage zero line fault automatic isolation device which comprises a monitoring assembly, a receiving device and a touch device, wherein the monitoring assembly is used for monitoring the voltage of a tail end zero line in real time, the monitoring assembly comprises a first power taking component, a voltage monitoring component and a radio frequency signal transmitting component, the first power taking component is respectively electrically connected with the voltage monitoring component and the radio frequency signal transmitting component and is used for providing electric energy, the radio frequency signal transmitting component is used for transmitting an abnormal radio frequency signal to the receiving device when the voltage detection component detects that the voltage of the tail end zero line exceeds a preset threshold value, and the receiving device is electrically connected with the touch device and is used for enabling the touch device to trigger a low-voltage circuit breaker in a power distribution cabinet to cut off power when the. The invention can effectively prevent the occurrence of the burning-out event of the electric equipment caused by the zero line fault of the low-voltage single-phase meter user, protect the life and property safety of the user, reduce the cost expenditure of the maintenance equipment of a power grid company, reduce the low-voltage power failure time and improve the power supply reliability.
Description
Technical Field
The invention relates to the technical field of distribution network line isolation devices, in particular to a low-voltage zero line fault automatic isolation device.
Background
In the prior art, low-voltage lines of low-voltage transformer areas in an electric power system are all three-phase four-wire lines, after a zero line fault occurs, a rear-section zero line is communicated with a live wire through user equipment, the ground pole of the rear-section zero line is insufficient, zero line voltage cannot return to zero, the rear-section zero line is caused to have phase voltage of 220V, a single-phase meter user is equal to using 2 live wires, the line voltage reaches 380V, and electric equipment with rated voltage of 220V is burnt.
In each year, the event that a user burns out electric facilities frequently caused by the broken zero line of a low-voltage transformer area seriously causes fire disasters caused by the ignition of electric appliances, personal safety accidents and user property loss are caused, at present, corresponding equipment is not available for realizing the monitoring and automatic isolation of the low-voltage zero line fault, and the stable operation of a power system and the life and property safety of the user are difficult to guarantee.
Disclosure of Invention
In view of the above, the present invention provides an automatic isolating device for low-voltage zero line fault, which overcomes or at least partially solves the above problems of the prior art.
The monitoring assembly is used for monitoring the voltage of a tail end zero line in real time, the monitoring assembly comprises a first electricity taking component, a voltage monitoring component and a radio frequency signal transmitting component, the first electricity taking component is electrically connected with the voltage monitoring component and the radio frequency signal transmitting component respectively and used for providing electric energy, the radio frequency signal transmitting component is used for transmitting an abnormal radio frequency signal to the receiving device when the voltage detecting component detects that the voltage of the tail end zero line exceeds a preset threshold value, the receiving device is electrically connected with the touch device, and the receiving device is used for triggering a low-voltage circuit breaker in a power distribution cabinet to be disconnected and powered off when receiving the abnormal radio frequency signal.
Further, the first electricity taking part is one or more of an electromagnetic induction power generation device, a wind power generation device and a solar power generation device.
Further, the receiving device comprises a radio frequency fingerprint identification module, and the radio frequency fingerprint identification module is used for performing radio frequency fingerprint identification on the abnormal radio frequency signal when receiving the abnormal radio frequency signal, judging whether the abnormal radio frequency signal is sent out by the real monitoring component, and determining whether to trigger the touch device according to the judgment result.
Further, the radio frequency signal transmitting component includes a radio frequency signal adjusting module, and the radio frequency signal adjusting module is configured to periodically adjust the abnormal radio frequency signal characteristic value based on a preset rule.
Further, the receiving device further comprises a rule loading module and a communication module, the rule loading module is used for initiating a rule downloading request to the node server through the communication module when the receiving device receives an abnormal radio frequency signal, the node server is used for downloading a rule chain block and analyzing the block to obtain a preset rule when the node server receives the rule downloading request, and feeding the preset rule back to the rule loading module, the rule loading module is further used for loading the preset rule fed back by the node server to the radio frequency fingerprint identification module after receiving the preset rule, and the rule chain is a block chain stored with the preset rule.
Furthermore, the touch device comprises a second electricity taking component, an electricity storage circuit, a PCB and an action assembly, wherein the second electricity taking component, the electricity storage circuit and the PCB are electrically connected in sequence, a control chip and a battery are integrated on the PCB, and the action assembly is electrically connected with the PCB.
Further, the second electricity taking component is one or more of a thermoelectric generation piece, an electromagnetic induction generation device, a wind power generation device and a solar power generation device.
Further, the action subassembly includes electronic jar, electronic jar's active cell front end is provided with the straight-bar, the top of straight-bar is equipped with the bellying, electronic jar is connected with the PCB board electricity for the drive straight-bar is to the removal of low-voltage circuit breaker stop switch direction, triggers low-voltage circuit breaker stop switch through the bellying.
Furthermore, the top end of the straight rod is provided with a U-shaped portion, the inner sides of two ends of the U-shaped portion are rotatably connected with the rotating block, the protruding portion is arranged on the surface of the rotating block, the straight rod is further provided with an angle adjusting mechanism, and the angle adjusting mechanism is used for adjusting the angle of the rotating block to enable the protruding direction of the protruding portion to be perpendicular to or parallel to the length direction of the straight rod.
Compared with the prior art, the invention has the beneficial effects that:
according to the low-voltage zero line fault automatic isolation device, the voltage of the tail end zero line is monitored in real time through the monitoring assembly, meanwhile, the receiving device and the touch device are erected at the tail end zero line, when the monitoring assembly monitors that the voltage of the tail end zero line exceeds a set threshold value, the monitoring assembly sends a radio frequency signal to the receiving device, and the touch device triggers the low-voltage circuit breaker in the power distribution cabinet to cut off power failure, so that real-time monitoring and automatic isolation of low-voltage zero line faults are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an automatic low-voltage neutral fault isolation apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of an overall structure of a touch device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an actuating device according to another embodiment of the present invention.
Fig. 4 is a schematic side view of a part of an actuator according to another embodiment of the present invention.
In the figure, 1 is a monitoring assembly, 11 is a first electricity-taking component, 12 is a voltage detection component, 13 is a radio frequency signal transmitting component, 131 is a radio frequency signal adjusting module, 2 is a receiving device, 21 is a radio frequency fingerprint identification module, 22 is a regular loading module, 23 is a communication module, 3 is a touch device, 31 is a second electricity-taking component, 32 is an electricity storage circuit, 33 is a PCB board, 34 is an action assembly, 341 is an electric cylinder, 342 is a mover, 343 is a straight rod, 344 is a bulge, 345 is a U-shaped part, 346 is a rotating block, 347 is a connecting part, 348 is a tenon, 349 is a clamping groove.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to illustrate the invention and not to limit the scope of the invention.
Referring to fig. 1, the invention provides an automatic low-voltage zero line fault isolation device, which comprises a monitoring assembly 1, a receiving device 2 and a touch device 3. The monitoring assembly 1 is used for monitoring the voltage of a tail end zero line in real time, the monitoring assembly 1 comprises a first electricity taking component 11, a voltage monitoring component 12 and a radio frequency signal transmitting component 13, and the first electricity taking component 11 is electrically connected with the voltage monitoring component 12 and the radio frequency signal transmitting component 13 respectively and used for providing electric energy. The radio frequency signal transmitting part 13 is configured to send an abnormal radio frequency signal to the receiving device 2 when the voltage detecting part 12 detects that the voltage of the tail end zero line exceeds a preset threshold. The receiving device 2 is electrically connected with the touch device 3, and the receiving device 2 is used for triggering the touch device 3 to trigger the low-voltage circuit breaker in the power distribution cabinet to cut off power supply when receiving the abnormal radio-frequency signal.
As an alternative embodiment, the first power taking component 11 is one or more of an electromagnetic induction power generation device, a wind power generation device, or a solar power generation device. The electromagnetic induction generating device is installed on a power transmission line and used for acquiring electric energy in an electromagnetic induction mode and transmitting the electric energy to the voltage monitoring part 12 and the radio frequency signal transmitting part 13. The wind power generation device and the solar power generation device are respectively used for providing electric energy required by operation for the voltage monitoring component 12 and the radio frequency signal transmitting component 13 through wind power generation and solar power generation, so that when the monitoring assembly 1 is erected, the original circuit of the tail end zero line does not need to be changed, and the erection efficiency is improved.
Specifically, the receiving device 2 includes a radio frequency fingerprint identification module 21, and the radio frequency fingerprint identification module 21 is configured to perform radio frequency fingerprint identification on the abnormal radio frequency signal when receiving the abnormal radio frequency signal. In this embodiment, each monitoring component 1 corresponds to a radio frequency fingerprint one to one, and the corresponding monitoring component 1 can be determined by the radio frequency fingerprint. The radio frequency fingerprint identification module 21 identifies a radio frequency fingerprint of the received radio frequency signal to judge whether the radio frequency fingerprint corresponds to the real monitoring component 1, and if the radio frequency signal corresponds to the real monitoring component 1, a signal is sent to the touch device 3 to enable the touch device 3 to trigger the low-voltage circuit breaker in the power distribution cabinet to be powered off; if the rf signal does not correspond to any real monitoring component 1, the rf signal is disregarded. The radio frequency fingerprint identification module 21 performs radio frequency fingerprint identification on the radio frequency signal, so that unnecessary power failure caused by receiving and executing wrong or forged radio frequency signal instructions by the receiving device 2 can be effectively prevented.
In an optional embodiment of the present invention, the rf signal transmitting part 13 includes an rf signal adjusting module 131, which is configured to periodically adjust, based on a preset rule, an abnormal rf signal characteristic value, where the characteristic value includes a phase, an in-phase, a quadrature, a power, a DWT coefficient, a transient signal duration, an amplitude variance, a signal peak number, a difference between a normalized average value and a normalized maximum value of a transient power, and a difference between the normalized average value and the normalized maximum value of the signal peak. The abnormal radio frequency signal characteristic value is used for generating an abnormal radio frequency signal radio frequency fingerprint, and the radio frequency signal adjusting module adjusts the radio frequency signal characteristic value based on a preset rule every time, so that the radio frequency signal transmitted by the radio frequency signal transmitting component 13 can be periodically changed.
Meanwhile, the receiving device 2 further includes a rule loading module 22 and a communication module 23, the rule loading module 22 is configured to obtain a preset rule and load the preset rule to the radio frequency fingerprint identification module 21, so that when the receiving device 2 receives a radio frequency signal, the radio frequency fingerprint identification module 21 can identify the radio frequency fingerprint according to the loaded preset rule, and thus the radio frequency fingerprint identification module 21 can identify the corresponding monitoring component 1 based on the radio frequency signal that changes periodically. In some embodiments, the preset rule is pre-stored in the remote database, when the preset rule is updated, the remote database sends an update prompt message to the rule loading module 22 through the communication module 23, and the rule loading module 22 initiates a rule downloading request to the remote database through the communication module 23 to download the preset rule to the local.
In other embodiments, the rule loading module 22 is configured to initiate a rule downloading request to the node server through the communication module 23 when the receiving device 2 receives an abnormal radio frequency signal. The node server is configured to download the rule chain block and analyze the block to obtain a preset rule when receiving a rule download request from the rule loading module 22, and feed back the preset rule to the rule loading module 22, and the rule loading module 22 loads the preset rule fed back by the node server to the radio frequency fingerprint identification module after receiving the preset rule. The rule chain is a block chain stored with preset rules, specifically, each block in the rule chain stores the preset rules of different zones, a user can write new preset rules into the block through the node server and add corresponding blocks into the rule chain, when the rule chain is updated, a consensus process is performed among all the node servers, and as the rule chain has the effects that the rule chain cannot be tampered and the data of the rule chain is transparently disclosed among all the node servers, a malicious user can be prevented from generating corresponding radio frequency signals by tampering the preset rules, and the condition that the trigger device 3 is deceived to execute a power-off instruction occurs, so that the stable operation of the power network is guaranteed.
As an alternative embodiment, the touch device 3 includes a second power-taking component 31, an electric storage circuit 32, a PCB 33 and an action assembly 34, the second power-taking component 31, the electric storage circuit 32 and the PCB 33 are electrically connected in sequence, a control chip and a battery are integrated on the PCB 33, and the action assembly 34 is electrically connected to the PCB 33.
The second electricity taking component 31 is one or more of a thermoelectric power generation sheet, an electromagnetic induction power generation device, a wind power generation device or a solar power generation device.
Specifically, the hot end of the thermoelectric generation piece is attached to the high-voltage transmission line or the high-power equipment, the cold end of the thermoelectric generation piece can be provided with the heat dissipation fins, and the thermoelectric generation piece converts heat generated in the operation process of the high-voltage transmission line or the high-power equipment into electric energy through a thermoelectric generation effect. The electromagnetic induction power generation device can be arranged on a power transmission line and generates electric energy based on the principle of electromagnetic induction power generation. The wind power generation device and the solar power generation device are used for generating power through wind energy and solar energy respectively. The electric energy generated by the second electricity taking part 31 is boosted and rectified by the electric storage circuit 32, and then input to the PCB 33 and stored in the battery. The second power taking component 31 can provide electric energy required by operation for the touch device on the basis of not directly accessing to the original circuit of the power distribution cabinet, so that the installation convenience is improved.
The action assembly 34 is used for executing the action of triggering the low-voltage circuit breaker to stop the switch. As an alternative embodiment, as shown in fig. 2, the action assembly 34 includes an electric cylinder 341, a straight rod 343 is disposed at a front end of a mover 342 of the electric cylinder 341, and a protrusion 344 is disposed at a top end of the straight rod 343. The electric cylinder 341 is electrically connected to the PCB 33 so that the PCB 33 can control the operation of the electric cylinder 341. When the PCB 33 receives the transmission signal of the receiving device 2, the electric cylinder 341 is controlled to drive the straight rod 343 to move towards the stop switch of the low-voltage circuit breaker, and the stop switch of the low-voltage circuit breaker is pressed by the protrusion 344, so that the low-voltage circuit breaker is disconnected and powered off.
As a further alternative, as shown in fig. 3 and 4, a U-shaped portion 345 is provided at the top end of the straight rod 343, the insides of both ends of the U-shaped portion 345 are rotatably connected to the rotating blocks 346, and the protrusions 344 are provided on the surfaces of the rotating blocks 346. The straight rod 343 is further provided with an angle adjusting mechanism for adjusting the angle of the rotating block 346, so that the protruding direction of the protruding part 344 is perpendicular to or parallel to the length direction of the straight rod 343. When the low-voltage circuit breaker stop switch is a push type switch, the angle of the rotating block 346 can be adjusted through the angle adjusting mechanism, so that the protruding direction of the protruding portion 344 is parallel to the length direction of the straight rod 343, the electric cylinder 341 is arranged on the inner side wall of the power distribution cabinet facing the low-voltage circuit breaker, and the electric cylinder 341 can drive the straight rod 343 to move towards the stop switch until the protruding portion 344 presses the stop switch to disconnect the power failure.
When the low-voltage circuit breaker stop switch adopts a vertical toggle switch, the angle of the rotating block 346 can be adjusted by the angle adjusting mechanism, so that the protruding direction of the protruding part 344 is perpendicular to the length direction of the straight rod 343. Meanwhile, the electric cylinder 341 is vertically arranged at the bottom or the top of the power distribution cabinet, when the PCB receives a signal of the receiving device 2, the electric cylinder 341 is controlled to drive the straight rod 343 to move upwards or downwards, and in the moving process of the straight rod 343, the protruding part 344 can hook the stop switch and pull the stop switch to move towards the other direction, so that the power failure during disconnection is realized. In this embodiment, the actuating assembly 34 can make the triggering device 3 suitable for different types of low-voltage circuit breakers by adjusting the angle of the protrusion 344 and the installation position of the electric cylinder 341, so as to expand the application range.
Specifically, the angle adjusting mechanism comprises a connecting part 347, one end of the connecting part 347 is rotatably connected with one side of the straight rod 343, a tenon 348 is arranged at the other end of the connecting part 347, and the tenon 348 is perpendicular to the connecting part 347. Meanwhile, the surface of the rotating block 346 is further provided with two clamping grooves 349, wherein an included angle between the opening direction of one clamping groove 349 and the protruding direction of the protruding portion 344 is 180 degrees, so that when the clamping tenon 348 is inserted into the clamping groove 349, the rotating block 346 is fixed and cannot rotate, and the protruding direction of the protruding portion 344 is perpendicular to the straight rod 343; the opening direction of the other locking groove 349 forms an angle of 90 ° with the protruding direction of the protrusion 344, so that when the locking tenon 348 is inserted into the locking groove 349, the rotating block 346 is fixed and cannot rotate, and the protruding direction of the protrusion 344 is parallel to the straight rod 343.
In addition, a spring 3410 is further disposed on the side surface of the straight rod 343, one end of the spring 3410 is connected to the side surface of the straight rod 343, and the other end of the spring 3410 is connected to the connecting portion 347, so that the connecting portion 347 is pulled to the side surface of the straight rod 343 without an external force, and the tenon 348 is not easily disengaged from the notch 349.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The device is characterized by comprising a monitoring assembly, a receiving device and a touch device, wherein the monitoring assembly is used for monitoring the voltage of a tail end zero line in real time, the monitoring assembly comprises a first electricity taking component, a voltage monitoring component and a radio frequency signal transmitting component, the first electricity taking component is respectively electrically connected with the voltage monitoring component and the radio frequency signal transmitting component and used for providing electric energy, the radio frequency signal transmitting component is used for transmitting an abnormal radio frequency signal to the receiving device when the voltage detecting component detects that the voltage of the tail end zero line exceeds a preset threshold value, the receiving device is electrically connected with the touch device, and the receiving device is used for triggering a low-voltage circuit breaker in a power distribution cabinet to cut off power when receiving the abnormal radio frequency signal.
2. The automatic low-voltage zero line fault isolation device according to claim 1, wherein the first power taking component is one or more of an electromagnetic induction power generation device, a wind power generation device or a solar power generation device.
3. The automatic low-voltage zero line fault isolation device according to claim 1, wherein the receiving device comprises a radio frequency fingerprint identification module, the radio frequency fingerprint identification module is used for performing radio frequency fingerprint identification on the abnormal radio frequency signal when receiving the abnormal radio frequency signal, judging whether the abnormal radio frequency signal is sent out by the real monitoring component, and determining whether to trigger the triggering device according to the judgment result.
4. The automatic low-voltage zero line fault isolation device according to claim 3, wherein the radio frequency signal transmitting component comprises a radio frequency signal adjusting module, and the radio frequency signal adjusting module is used for periodically adjusting the abnormal radio frequency signal characteristic value based on a preset rule.
5. The automatic low-voltage zero line fault isolation device according to claim 4, wherein the receiving device further comprises a rule loading module and a communication module, the rule loading module is configured to initiate a rule downloading request to the node server through the communication module when the receiving device receives an abnormal radio frequency signal, the node server is configured to download a rule chain block and analyze the block to obtain a preset rule and feed back the preset rule to the rule loading module when the node server receives the rule downloading request, the rule loading module is further configured to load the preset rule fed back by the node server to the radio frequency fingerprint identification module after receiving the preset rule, and the rule chain is a block chain in which the preset rule is stored.
6. The automatic low-voltage zero line fault isolation device according to claim 1, wherein the touch device comprises a second electricity taking component, an electricity storage circuit, a PCB and an action assembly, the second electricity taking component, the electricity storage circuit and the PCB are electrically connected in sequence, a control chip and a battery are integrated on the PCB, and the action assembly is electrically connected with the PCB.
7. The automatic low-voltage zero line fault isolation device according to claim 6, wherein the second electricity taking component is one or more of a thermoelectric generation piece, an electromagnetic induction generation device, a wind power generation device or a solar power generation device.
8. The automatic low-voltage zero line fault isolation device according to claim 6, wherein the action assembly comprises an electric cylinder, a straight rod is arranged at the front end of a rotor of the electric cylinder, a protruding portion is arranged at the top end of the straight rod, and the electric cylinder is electrically connected with the PCB and used for driving the straight rod to move towards the direction of a low-voltage circuit breaker stop switch so as to trigger the low-voltage circuit breaker stop switch through the protruding portion.
9. The automatic low-voltage zero line fault isolation device according to claim 8, wherein a U-shaped portion is arranged at the top end of the straight rod, inner sides of two ends of the U-shaped portion are rotatably connected with the rotating block, the protruding portion is arranged on the surface of the rotating block, and an angle adjusting mechanism is further arranged on the straight rod and used for adjusting the angle of the rotating block so that the protruding direction of the protruding portion is perpendicular to or parallel to the length direction of the straight rod.
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| CN202011545779.7A CN112653109B (en) | 2020-12-23 | 2020-12-23 | Automatic low-voltage zero line fault isolation device |
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| CN202011545779.7A CN112653109B (en) | 2020-12-23 | 2020-12-23 | Automatic low-voltage zero line fault isolation device |
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| CN204794055U (en) * | 2015-07-15 | 2015-11-18 | 江苏省电力公司常州供电公司 | Zero disconnected open phase protection of low pressure power supply system |
| CN105024341A (en) * | 2015-08-17 | 2015-11-04 | 佛山电力设计院有限公司 | Circuit breaker and circuit break system having zero-line disconnection and open-phase protection function |
| CN209400622U (en) * | 2018-12-12 | 2019-09-17 | 上海华宿电气股份有限公司 | A kind of electric fault detecting and controlling system |
| CN109980788A (en) * | 2019-04-24 | 2019-07-05 | 万松 | A kind of method of low-voltage power supply user power failure auto-alarming |
| CN110967653A (en) * | 2019-12-10 | 2020-04-07 | 广东电网有限责任公司 | Electric leakage detection device and electric leakage detection method |
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Effective date of registration: 20231218 Address after: 572316 Baoxing East Road, Baocheng Town, Baoting County, Hainan Province Patentee after: BAOTING POWER SUPPLY BUREAU OF HAINAN POWER GRID CO.,LTD. Patentee after: Hainan Electric Power Industry Development Co.,Ltd. Address before: 570100 Baoxing East Road, Baocheng Town, Baoting Li and Miao Autonomous County, Hainan Province Patentee before: BAOTING POWER SUPPLY BUREAU OF HAINAN POWER GRID CO.,LTD. |