CN112421782A - Leakage protection switch on-line monitoring device - Google Patents

Leakage protection switch on-line monitoring device Download PDF

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Publication number
CN112421782A
CN112421782A CN202011312350.3A CN202011312350A CN112421782A CN 112421782 A CN112421782 A CN 112421782A CN 202011312350 A CN202011312350 A CN 202011312350A CN 112421782 A CN112421782 A CN 112421782A
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CN
China
Prior art keywords
monitoring device
protection switch
leakage protection
circuit board
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011312350.3A
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Chinese (zh)
Inventor
杨琦
罗玉珠
王骏
李凯恩
杨绍露
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lincang Power Supply Bureau of Yunnan Power Grid Co Ltd
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Lincang Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Lincang Power Supply Bureau of Yunnan Power Grid Co Ltd filed Critical Lincang Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority to CN202011312350.3A priority Critical patent/CN112421782A/en
Publication of CN112421782A publication Critical patent/CN112421782A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00024—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission by means of mobile telephony
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The invention relates to an on-line monitoring device of an earth leakage protection switch, which comprises a monitoring device shell, an access end, a circuit board, an AC/DC module, a WIFI transmission module, a signal processing module and an intelligent monitoring chip, wherein the monitoring device shell is connected with the access end through the circuit board; the access end is connected with an access end seat on the circuit board through an access connecting wire, the connection outlet end is connected with a connection outlet end seat on the circuit board through a connection outlet connecting wire, and the access end and the connection outlet end are respectively connected with a connection outlet of the leakage protection switch and a live wire; the AC/DC module, the WIFI transmission module, the signal processing module and the intelligent monitoring chip are arranged on the circuit board. According to the invention, the leakage protection switch is not required to be replaced, the original installed leakage protection switch is not required to be modified, and the leakage protection switch is connected into the device, so that the data of the working state, the leakage information, the power consumption and the like of the leakage protection switch can be transmitted to the mobile phone through WIFI, thus the online monitoring of the leakage protection switch is realized, the resource waste is reduced, and the device is green and environment-friendly.

Description

Leakage protection switch on-line monitoring device
Technical Field
The invention relates to intelligent monitoring equipment, in particular to an on-line monitoring device for a leakage protection switch.
Background
For various reasons, most of the current domestic household and enterprise places use the common AC leakage protection switch. The leakage protection switch is often low in price and few in functions, only has the function of tripping after the leakage is detected, cannot provide a waveform or current causing the leakage, and can only judge through manual work according to experience after the tripping occurs. In addition, for most places, since the quality of the AC leakage protection switch is good, the leakage can be accurately determined, and if the leakage protection switch is replaced to add a function, unnecessary waste of resources is inevitably caused.
Disclosure of Invention
In order to solve the above problems, the present invention provides an on-line monitoring device for leakage protection switch.
The technical scheme adopted by the invention is as follows:
an online monitoring device of an earth leakage protection switch comprises a monitoring device shell, an access end, a circuit board, an AC/DC module, a WIFI transmission module, a signal processing module and an intelligent monitoring chip; the access end and the output end are arranged in a groove body on one side of the monitoring device shell, the access end is connected with an access end seat on the circuit board through an access connecting wire, the output end is connected with an output end seat on the circuit board through an output connecting wire, and the access end and the output end are respectively connected with an output end of the leakage protection switch and a live wire; the AC/DC module, the WIFI transmission module, the signal processing module and the intelligent monitoring chip are arranged on the circuit board, and the circuit board is fixed in the monitoring device shell.
Preferably, the AC/DC module is connected with the access terminal base, the connection terminal base, the WIFI transmission module and the intelligent monitoring chip through a circuit inside the circuit board, the WIFI transmission module is connected with the intelligent monitoring chip through a circuit inside the circuit board, and the signal processing module is connected with the access terminal base and the intelligent monitoring chip through a circuit inside the circuit board.
Preferably, the incoming end and the output end are two fixing-line devices respectively, the fixing-line device is composed of a clamping seat and a crimping bolt, the incoming end and the clamping seat of the output end are welded with the incoming connecting wire and the outgoing connecting wire respectively, and the rotating crimping bolt is matched with the clamping seat to crimp the electric wire and the live wire connected with the earth leakage protection switch.
Preferably, the monitoring device shell is made of hard insulating materials and comprises a monitoring device base and a monitoring device cover, and the monitoring device base is connected with the monitoring device cover through bolts.
Preferably, the AC/DC module can convert 220V alternating current into 3.3V-5V direct current through a double-winding transformer and a rectifier bridge.
Preferably, an intelligent algorithm is integrated in the intelligent monitoring chip, and the intelligent algorithm includes the following steps: step a, performing spectrum analysis on a typical leakage waveform, establishing a corresponding characteristic database, and writing the database into an IC chip; and b, carrying out fast Fourier transform on the acquired signal waveform by the IC chip to obtain the frequency spectrum characteristic of the waveform, and then comparing the frequency spectrum characteristic with the established database so as to judge the type of the generated electric leakage.
The invention has the beneficial effects that:
compared with the prior art, the leakage protection switch on-line monitoring device is small in size, low in cost, free of replacement of the leakage protection switch and transformation of the leakage protection switch installed originally, and the leakage protection switch can be used after being connected into the device. The intelligent monitoring chip in the on-line monitoring device integrates an intelligent algorithm, can identify whether the leakage protection switch trips, records the current waveform causing the tripping action after tripping, stores the current waveform as leakage information, and can calculate information such as power consumption and instantaneous power of a line. After the WiFi module is connected with the mobile phone, the information can be transmitted. Therefore, on the basis of realizing on-line monitoring on the leakage protection switch, the original leakage protection switch is prevented from being replaced, the resource waste is reduced, and the leakage protection switch is green and environment-friendly.
Drawings
Fig. 1, fig. 2 and fig. 3 are schematic structural diagrams of the present invention.
In fig. 1-3, 1-incoming end, 2-connect the output, 3-circuit board, 4-AC/DC module, 5-WIFI transmission module, 6-signal processing module, 7-intelligent monitoring chip, 8-insert connecting wire, 9-insert end seat, 10-connect the output connecting wire, 11-connect the output end seat, 12-cassette, 13-crimping bolt, 14-monitoring device base, 15-monitoring device lid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-3, the present invention is an on-line monitoring device for an earth leakage protection switch, which comprises a monitoring device housing, an incoming end 1, an outgoing end 2, a circuit board 3, an AC/DC module 4, a WIFI transmission module 5, a signal processing module 6 and an intelligent monitoring chip 7.
The monitoring device shell is made of hard insulating materials and comprises a monitoring device base 14 and a monitoring device cover 15, and the monitoring device base 14 is connected with the monitoring device cover 15 through bolts.
The utility model discloses a monitoring device, including circuit board 3, incoming end 1, outgoing end 2, incoming end 1 and incoming end seat 9, the cell body of monitoring device shell one side is located with connecing outgoing end 2 to the incoming end 1, and the incoming end 1 is connected with the incoming end seat 9 on circuit board 3 through inserting connecting wire 8, connects outgoing end 2 and is connected with the outgoing end seat 11 that connects on circuit board 3 through connecing out connecting wire 10, and incoming end 1 connects the export with connecing out 2 to connect respectively with earth leakage protection switch and live wire to. The AC/DC module 4, the WIFI transmission module 5, the signal processing module 6 and the intelligent monitoring chip 7 are arranged on the circuit board 3, and the circuit board 3 is fixed in the monitoring device shell.
The AC/DC module 4 adopts a precision isolating switch power supply module of a Risym manufacturer, and a double-winding transformer and a rectifier bridge are arranged in the AC/DC module 4, so that 220V alternating current can be converted into 3.3V-5V direct current. The WIFI transmission module 5 adopts a Risym manufacturer ATK-ESP8266 module, the WIFI transmission module 5 has three working modes, namely internet connection and mobile phone hotspot connection, and the modes can be selected as required. The signal processing module 6 adopts an APOBICO MAX262 module, and the signal processing module 6 has a low-pass filtering function, so that high-frequency clutter signals in a circuit can be filtered, and the detection precision of an IC chip is improved. The intelligent monitoring chip 7 adopts an STM32f103 chip, the intelligent monitoring chip 7 is provided with a plurality of I/O interfaces, a plurality of modules can be controlled simultaneously, the dominant frequency is 72mHz, and the processing speed of the intelligent monitoring chip meets the detection of electric leakage.
The AC/DC module 4 is connected with the access terminal base 9, the connection outlet terminal base 11, the WIFI transmission module 5 and the intelligent monitoring chip 7 through the circuit inside the circuit board 3, the WIFI transmission module 5 is connected with the intelligent monitoring chip 7 through the circuit inside the circuit board 3, and the signal processing module 6 is connected with the access terminal base 9 and the intelligent monitoring chip 7 through the circuit inside the circuit board 3.
The incoming end 1 and connect the end 2 and be two fixing-line devices respectively, and the fixing-line device comprises cassette 12 and crimping bolt 13, and incoming end 1 and the cassette 12 that connects the end 2 weld with inserting connecting wire 8 and connecing out connecting wire 10 respectively, and rotatory crimping bolt 13 cooperation cassette 12 can be to the electric wire and the live wire crimping of being connected with earth leakage protection switch.
When the leakage protection switch on-line monitoring device is installed, the outlet of the leakage protection switch live wire is found firstly, one end of the electric wire is fixed to the outlet of the leakage protection switch live wire, the other end of the electric wire penetrates through the access end 1 and the clamping seat 12 of the outlet end 2, and the electric wire is fixed by the rotary compression bolt 13. Then, a corresponding APP is installed at the mobile phone end, and the mobile phone WIFI is connected with the WIFI transmission module 5 of the leakage protection switch online monitoring device. The working principle of the leakage protection switch on-line monitoring device is as follows: the access end 1 is connected with the electric leakage protection switch through a wire, after the access end 1 is electrified, the AC/DC module 4 can convert 220V alternating current of the access end 1 into 3.3V-5V direct current through the double-winding transformer and the rectifier bridge, and the WIFI module and the intelligent monitoring chip 7 are powered through the circuit board 3. Because signal processing module 6 passes through the inside circuit of circuit board 3 and is connected with access terminal seat 9, consequently signal processing module 6 can gather the voltage and the current signal of access terminal 1, and the signal after gathering passes through low pass filter back, filters high frequency clutter part, then inputs to intelligent monitoring chip 7 through circuit board 3. And after receiving the information in real time, the intelligent monitoring chip 7 performs calculation processing, and transmits the calculated information to the mobile phone end in real time through the WIFI module.
It should be noted that an intelligent algorithm is integrated inside the intelligent monitoring chip 7, and the intelligent algorithm includes the following steps: step a, performing spectrum analysis on a typical leakage waveform, establishing a corresponding characteristic database, and writing the database into an IC chip; and b, carrying out fast Fourier transform on the acquired signal waveform by the IC chip to obtain the frequency spectrum characteristic of the waveform, and then comparing the frequency spectrum characteristic with the established database so as to judge the type of the generated electric leakage.
The intelligent monitoring chip 7 judges the voltage change of the front line in real time through an intelligent algorithm, and then judges whether the leakage protection switch acts or not. If the action tripping of the earth leakage protection switch is judged to be about to occur, an earth leakage tripping early warning signal is sent out before the action tripping occurs, and is transmitted to the mobile phone end through the WIFI module to be notified, so that the mobile phone end notification and the action tripping of the earth leakage protection switch are synchronous; meanwhile, the intelligent monitoring chip 7 automatically stores the current signal within 200ms before the interruption by using the self-storage function. After the earth leakage protection switch is powered on again, the intelligent monitoring chip 7 calls the current signal within 200ms before interruption, classifies the current signal as the waveform of the earth leakage signal and analyzes the waveform of the signal, thereby judging the type of the earth leakage, and deducing the cause of the earth leakage, the cause of the earth leakage and the like.
In addition, after receiving the voltage and current signals processed by the signal processing module 6, the intelligent monitoring chip 7 can calculate information such as power consumption and instantaneous power of a line, store the information and read the information through the WIFI module by the mobile phone terminal.

Claims (6)

1. The utility model provides a leakage protection switch on-line monitoring device which characterized in that: the leakage protection switch on-line monitoring device comprises a monitoring device shell, an access end, an output end, a circuit board, an AC/DC module, a WIFI transmission module, a signal processing module and an intelligent monitoring chip; the access end and the output end are arranged in a groove body on one side of the monitoring device shell, the access end is connected with an access end seat on the circuit board through an access connecting wire, the output end is connected with an output end seat on the circuit board through an output connecting wire, and the access end and the output end are respectively connected with an output end of the leakage protection switch and a live wire; the AC/DC module, the WIFI transmission module, the signal processing module and the intelligent monitoring chip are arranged on the circuit board, and the circuit board is fixed in the monitoring device shell.
2. A leakage protection switch on-line monitoring device according to claim 1, characterized in that: the AC/DC module is connected with the access end seat, the connection outlet end seat, the WIFI transmission module and the intelligent monitoring chip through the circuit inside the circuit board, the WIFI transmission module is connected with the intelligent monitoring chip through the circuit inside the circuit board, and the signal processing module is connected with the access end seat and the intelligent monitoring chip through the circuit inside the circuit board.
3. A leakage protection switch on-line monitoring device according to claim 1, characterized in that: the incoming end with connect the output and be two fixing-line devices respectively, the fixing-line device comprises cassette and crimping bolt, the incoming end with connect the cassette of output respectively with insert connecting wire and connect the welding of connecting wire out, rotatory crimping bolt cooperation cassette can be to the electric wire and the live wire crimping of being connected with earth leakage protection switch.
4. A leakage protection switch on-line monitoring device according to claim 1, characterized in that: the monitoring device shell is made of hard insulating materials and comprises a monitoring device base and a monitoring device cover, and the monitoring device base is connected with the monitoring device cover through bolts.
5. A leakage protection switch on-line monitoring device according to claim 1, characterized in that: the AC/DC module can convert 220V alternating current into 3.3-5V direct current through a double-winding transformer and a rectifier bridge.
6. A leakage protection switch on-line monitoring device according to claim 1, characterized in that: the intelligent monitoring chip is internally integrated with an intelligent algorithm, and the intelligent algorithm comprises the following steps: step a, performing spectrum analysis on a typical leakage waveform, establishing a corresponding characteristic database, and writing the database into an IC chip;
and b, carrying out fast Fourier transform on the acquired signal waveform by the IC chip to obtain the frequency spectrum characteristic of the waveform, and then comparing the frequency spectrum characteristic with the established database so as to judge the type of the generated electric leakage.
CN202011312350.3A 2020-11-20 2020-11-20 Leakage protection switch on-line monitoring device Pending CN112421782A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113341308A (en) * 2021-04-19 2021-09-03 云南电网有限责任公司临沧供电局 Method and system for judging action characteristics of isolating switch

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CN205665568U (en) * 2016-06-06 2016-10-26 青岛卓迅电子科技有限公司 Electrical safety remote control and measurement communication device based on thing networking
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Publication number Priority date Publication date Assignee Title
JP2006164787A (en) * 2004-12-08 2006-06-22 Fuji Electric Systems Co Ltd Apparatus for analyzing operation cause of earth leakage breaker
US20080112100A1 (en) * 2006-11-10 2008-05-15 Daniel Liu Digital electric leakage detecting and monitoring device
CN201682327U (en) * 2010-05-19 2010-12-22 王士纲 Leakage protector remote control system
CN201682328U (en) * 2010-05-19 2010-12-22 王士纲 Intelligent control terminal of leakage protector remote control system
CN202333727U (en) * 2011-11-28 2012-07-11 成都槟果科技有限公司 Intelligent leakage protection equipment
CN203193398U (en) * 2013-04-24 2013-09-11 南阳金冠电气有限公司 Distribution transform monitor and control device
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