CN110556919A - NB-IoT-based network distribution system with residual current detection function and terminal - Google Patents
NB-IoT-based network distribution system with residual current detection function and terminal Download PDFInfo
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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
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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
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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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
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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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- 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
- Y04S40/128—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 involving the use of Internet protocol
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Abstract
The invention discloses an NB-IoT-based network distribution system with a residual current detection function, which comprises: the device comprises a detection module, a setting module, an NB-IoT wireless communication module and a micro-control processing module; the micro-control processing module is respectively connected with the detection module, the setting module and the NB-IoT wireless communication module; the micro-control processing module is used for controlling and managing data generated by the detection module, the setting module and the NB-IoT wireless communication module; the detection module is used for detecting the processed residual current value and the residual current value at the moment of power failure; the setting module is used for setting relevant parameters for local data of the distribution network system; the NB-IoT wireless communication module is used for realizing the transmission of remote wireless data.
Description
Technical Field
The invention relates to the technical field of power distribution networks, in particular to an NB-IoT-based distribution network system with a residual current detection function and a terminal.
background
the intelligent total protection integrates an electric leakage relay, an alternating current contactor and an electric leakage circuit breaker, and the total protection is used as the last 'insurance' of the low-voltage outgoing line residual current action protection in the rural power grid area and plays a decisive role in the safe operation of the rural low-voltage power grid. The total protection trip often causes the power loss of tens of or even hundreds of low-voltage users in the transformer area, and has great influence on the satisfaction degree of the power supply service. Therefore, how to promote the intelligent level of rural power grid distribution equipment operation, reduce the total protection trip-out rate, know the potential safety hazard point of power consumption in advance, accurate location fault point shortens the rush-repair time, promotes the rural power grid power supply reliability, becomes the first difficult problem that current power supply bureau (institute) faced.
As is well known, two types of devices for detecting residual current in power supply lines are available, one is a residual current operated protector, that is, a so-called earth leakage breaker, disconnects a power line when detecting that a remaining current value of the power line exceeds a certain threshold value, so as to achieve the purpose of protecting the safety of electric equipment, human bodies and property, the other type is a residual current detector, a portable residual current detecting meter which is generally powered by a dry battery is adopted, the device is used for detecting the current residual current value by field maintenance personnel to carry out troubleshooting on a fault point, but the residual current is generated at any time due to the randomness of various environmental factors of a power supply line and the uncertainty of the power utilization condition, particularly when power is cut off or the total protection is tripped out, the difficulty of troubleshooting is increased, time and labor are wasted, and whether all fault points are debugged and maintained or not can be determined during power test and transmission, so that safe power transmission can be realized. Therefore, the power failure time is long and the unreliability of power supply caused by the long fault point elimination period can certainly cause the dissatisfaction of a user to a power supply management department, and meanwhile, the power utilization potential safety hazard of the user is not early-warned, and the passive 'sheep death and reinforcement' type fault elimination and maintenance can not meet the requirement of intelligent management of power distribution safety more and more.
Disclosure of Invention
the invention aims to provide an NB-IoT-based power distribution network system with a residual current detection function and a terminal, aiming at the defects of the prior art, which can monitor and record the maximum value of the minute and the day residual current of a power supply line on line in real time, generate a corresponding data curve, report to a master station in a timing mode and be used for analyzing and early warning abnormal nodes by a power supply management department.
in order to achieve the purpose, the invention adopts the following technical scheme:
An NB-IoT based networking system with residual current detection functionality, comprising: the device comprises a detection module, a setting module, an NB-IoT wireless communication module and a micro-control processing module; the micro-control processing module is respectively connected with the detection module, the setting module and the NB-IoT wireless communication module;
The micro-control processing module is used for controlling and managing data generated by the detection module, the setting module and the NB-IoT wireless communication module;
The detection module is used for detecting the processed residual current value and the residual current value at the moment of power failure;
The setting module is used for setting relevant parameters for local data of the distribution network system;
the NB-IoT wireless communication module is used for realizing the transmission of remote wireless data.
furthermore, the detection module comprises a current detection circuit module and a power failure detection circuit module;
The current detection circuit module is connected with the micro-control processing module and is used for processing the collected residual current value to obtain an accurate residual current value;
and the power failure detection circuit module is connected with the micro control processing module and used for reporting the detected residual current value at the moment of power failure and the real-time point after the micro control processing module detects a power failure signal.
Further, the setting module comprises an RS485 communication circuit module and an infrared receiving circuit module;
The RS485 communication circuit module is connected with the micro-control processing module and is used for setting and communicating local data parameters of the distribution network system through wires;
The infrared receiving circuit module is connected with the micro-control processing module and is used for setting and maintaining local data parameters of the distribution network system through wireless.
further, the method also comprises the following steps:
the storage module is used for storing data information in the distribution network system;
And the power supply module is used for providing electric energy for the detection module, the setting module, the NB-IoT wireless communication module, the storage module and the micro-control processing module.
Further, the method also comprises the following steps:
And the standby power supply circuit module is used for actively reporting the power failure event data at the moment of power failure and providing electric energy.
Furthermore, the system also comprises an LED indicating circuit module which is used for indicating the running state and the communication state of the distribution network system.
further, the current detection circuit module is specifically used for obtaining an accurate residual current value after the collected residual current value is subjected to sampling resistance, an operational amplifier, a micro-control processing module and current calibration; the collected residual current value is collected by a pincerlike residual current transformer.
Furthermore, the standby power supply circuit module is realized through a farad capacitor.
Further, the data information in the storage module comprises a maximum remaining current value per minute, a maximum remaining current value per day, real-time and auxiliary data information.
Correspondingly, a NB-IoT based distribution network terminal with residual current detection function is further provided, which comprises an NB-IoT based distribution network system with residual current detection function according to any one of claims 1 to 9.
compared with the prior art, the invention has the following advantages:
1. the invention is fixedly installed in a distribution box at the low-voltage side or the user side of a transformer area, monitors the residual current and the power failure state of a power supply line on line in real time, reports related information data to a master station regularly or actively in real time through NB-IoT, and can be used for inquiring or warning and displaying the related data on a mobile phone APP carried by field operation and maintenance personnel.
2. The invention can monitor and record the maximum value of the minute and the daily residual current of the power supply line on line in real time, generate a corresponding data curve of the minute maximum residual current and the daily maximum residual current, and report the data curve to the master station at regular time for the power supply management department to analyze and early warn abnormal nodes, thereby being beneficial to the power supply management department to eliminate the abnormal nodes in advance and eliminate potential safety hazards in advance in a targeted manner.
3. When the monitored residual current of the power supply line exceeds the set threshold value, the invention actively reports the residual current overrun event to the master station for the on-site operation and maintenance personnel to carry out targeted investigation and processing before the total protection is not tripped, thereby greatly reducing the tripping frequency of the total protection and ensuring the safety of power supply and power utilization.
4. when abnormal power failure of a power supply line is monitored, the method and the system actively report the residual current event at the moment of power failure to the master station, are used for site operation and maintenance personnel to accurately position the range of power failure users in a distribution area, solve the power failure users more quickly and ensure that all the faults of the power failure users are safely tested and transmitted.
Drawings
Fig. 1 is a configuration network system structure diagram with a residual current detection function based on NB-IoT according to an embodiment;
Fig. 2 is a circuit diagram of a power supply circuit for supplying power to the power protection circuit and the RS485 communication circuit module interface according to an embodiment;
FIG. 3 is a circuit diagram of a power supply module and a standby power supply circuit module provided in the first embodiment;
FIG. 4 is a circuit diagram of a current detection circuit module according to an embodiment;
FIG. 5 is a circuit diagram of a power down detection circuit block according to an embodiment;
FIG. 6 is a circuit diagram of a micro-control processing module according to an embodiment;
FIG. 7 is a circuit diagram of a memory module according to an embodiment;
FIG. 8 is a circuit diagram of an RS485 communication circuit module according to an embodiment;
FIG. 9 is a circuit diagram of an IR receiving circuit module according to an embodiment;
FIG. 10 is a circuit diagram of an LED indicating circuit module according to an embodiment;
Fig. 11 is an NB-IoT wireless communication module interface circuit diagram provided in a first embodiment;
fig. 12 is a circuit diagram of NB-IoT wireless communication module interface conversion provided in the first embodiment;
Fig. 13 is a configuration network system recording and alarm structure diagram with a residual current detection function based on NB-IoT according to an embodiment.
Detailed Description
the embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The invention aims to provide an NB-IoT-based network distribution system with a residual current detection function and a terminal aiming at the defects of the prior art.
Example one
An NB-IoT based network distribution system with residual current detection function according to the present embodiment, as shown in fig. 1 to 13, includes: the system comprises a power supply module 12, a detection module 13, a storage module 15, a setting module 14, an NB-IoT wireless communication module 16, a standby power circuit module 17, an LED indication circuit module 18 and a micro-control processing module 11, wherein the micro-control processing module 11 is respectively connected with the power supply module 12, the detection module 13, the storage module 15, the setting module 14, the NB-IoT wireless communication module 16, the standby power circuit module 17 and the LED indication circuit module 18;
The power supply module 12 is used for supplying electric energy to the detection module 13, the setting module 14, the NB-IoT wireless communication module 16, the storage module 15, the micro-control processing module 11 and the LED indication circuit module 18;
The micro-control processing module 11 is used for controlling and managing data generated by the detection module 13, the storage module 15, the setting module 14, the NB-IoT wireless communication module 16 and the LED indicating circuit module 18;
the detection module 13 is configured to detect the processed remaining current value and the remaining current value at the power-down moment;
The setting module 14 is configured to set relevant parameters for local data of the distribution network system;
the storage module 15 is configured to store various data information of the distribution network system;
the NB-IoT wireless communication module 16 is configured to implement transmission of remote wireless data;
the standby power supply circuit module 17 is used for providing electric energy for the active report of the power failure event data at the moment of power failure;
the LED indication circuit module 18 is configured to indicate an operation state and a communication state of the distribution network system.
It should be noted that the NB-IoT is constructed in the cellular network, consumes only about 180KHz bandwidth, and can be directly deployed in the GSM network, the UMTS network, or the LTE network, so as to reduce the deployment cost and achieve smooth upgrade. NB-IoT is an emerging technology in the IoT domain that supports cellular data connectivity for low power devices over wide area networks, also known as low power wide area networks (LPWA). NB-IoT supports efficient connectivity for devices with long standby time and high requirements for network connectivity. NB-IoT device battery life can be increased to at least 10 years while still providing very comprehensive indoor cellular data connection coverage.
in this embodiment, the power supply module 12 includes a power protection circuit module, a DC/DC power circuit module; the power supply module 12 is mainly composed of a power protection circuit module, a DC/DC power circuit module, and the like to supply power to the detection module 13, the setting module 14, the NB-IoT wireless communication module 16, the storage module 15, the micro-control processing module 11, the LED indication circuit module 18, and the like.
In this embodiment, the detection module 13 includes a current detection circuit module 131, a power failure detection circuit module 132;
the current detection circuit module 131 is connected with the micro-control processing module 11 and is used for processing the acquired residual current value to obtain an accurate residual current value;
In this embodiment, the current detection circuit module 131 is specifically configured to obtain an accurate residual current value by performing sampling resistance, signal amplification of an operational amplifier, a/D conversion of the micro-control processing module 11, and current calibration on the residual current value acquired from the pincer-shaped residual current transformer.
The pincerlike residual current transformer is used for collecting residual current.
The sampling resistor is used for sampling current and voltage; the current sampling is connected in series with a resistor with a smaller resistance value, and the voltage sampling is connected in parallel with a resistor with a larger resistance value.
An operational amplifier is a circuit unit having a very high amplification factor.
The A/D conversion is analog-to-digital conversion; i.e. converting an analog signal into a digital signal.
the current calibration is used for calibrating the collected current value.
in the embodiment, when the monitored residual current value of the power supply line exceeds the set threshold value, the residual current overrun event is actively reported to the master station for on-site operation and maintenance personnel to carry out targeted investigation before total maintenance tripping.
And the power failure detection circuit module 132 is connected to the micro control processing module 11, and configured to report the detected remaining current value at the power failure instant and the real-time point after the micro control processing module 11 detects the power failure signal.
The power-down detection circuit module 132 includes a detection signal PWRDET, where the detection signal PWRDET is connected to the micro-control processing module 11, and once the micro-control processing module 11 detects the power-down signal PWRDET, the power-down detection circuit module 132 actively reports the remaining current value and the real-time point captured at the power-down moment to the master station. The real-time point refers to the time point of the residual current value at the moment of power failure.
when abnormal power failure of a power supply line is monitored, the method and the system actively report the residual current event at the moment of power failure to a master station for accurately positioning the power failure user range of a transformer area by field operation and maintenance personnel.
In this embodiment, the standby power supply circuit module 17 is implemented by a farad capacitor, and is used to provide electric energy for actively reporting power-down event data at the power-down moment.
In this embodiment, as shown in fig. 6, the micro-control processing module 11 adopts an FM33A0X6 chip, and is electrically connected to the current detection circuit module 131(AD _1K and PHASE _1K), the power failure detection circuit module 132 (detection signal PWRDET), the storage module 15(SCL, SDL), the LED indication circuit module 18(LED1_1, LED1_2, LED2_1, LED2_2), the RS485 communication circuit module 141(RX485, TX485), the infrared receiving circuit module 142(IR _ RXD, IR _ d), and the txnb-IoT wireless communication module 16, so as to control and manage data generated by each independent circuit.
in the present embodiment, the storage module 15 is connected to the micro-control processing module 11, and is used for storing the maximum remaining current value per minute, the maximum remaining current value per day, the real-time and other auxiliary data information. Wherein the real-time value refers to the time for storing the maximum remaining current value, i.e. storing other auxiliary data information.
the embodiment can monitor and record the maximum value of the minute and day residual current of the power supply line in real time, generate a corresponding data curve, and report the data curve to the master station at regular time, so that the power supply management department can analyze and early warn abnormal nodes, the power supply management department can eliminate the abnormal nodes in advance, and potential safety hazards can be eliminated in advance in a targeted manner.
in this embodiment, the setting module 14 includes an RS485 communication circuit module 141 and an infrared receiving circuit module 142;
the RS485 communication circuit module 141 is connected with the micro-control processing module 11 and is used for setting and communicating local data parameters of the distribution network system through wires;
The RS485 communication circuit module 141 can realize setting and communication of local data parameters in a wired manner.
And the infrared receiving circuit module 142 is connected with the micro-control processing module and is used for setting and maintaining local data parameters of the distribution network system through wireless.
the infrared receiving circuit module 142 can wirelessly realize the setting and maintenance of local data parameters.
The local data parameters of this embodiment include parameters such as threshold values of residual current.
in this embodiment, the LED indication circuit module 18 is connected to the micro control processing module 11, and is used for indicating the operation status and the communication status of the distribution network system.
in this embodiment, an interface circuit of the NB-IoT wireless communication module 16 is connected to the micro-control processing module 11, and the internet of things card is connected to the NB-IoT wireless communication module 16, so that data can be remotely and wirelessly transmitted to the master station in real time, and the data can be transmitted to the computer WEB or the mobile phone APP through the master station in real time through the cloud platform.
According to the embodiment, the monitored and recorded data information is transmitted in real time and is highlighted on the mobile phone APP carried by field operation and maintenance personnel or related power supply management personnel, and the data of the abnormal point and the fault point are visual and clear at a glance. The real-time warning of the abnormal point or fault point data information is really realized, so that the field maintenance personnel can quickly respond to the elimination of the accurate positioning fault point, the safety problem of power transmission after the elimination is ensured, the satisfaction degree of a power supply user is greatly improved, the high efficiency of the field operation and maintenance personnel is improved, and meanwhile, real-time, real and effective first-hand data are provided for the distribution network safety intellectualization.
fig. 13 is a diagram of a distribution network system recording and alarm structure with a residual current detection function based on NB-IoT according to this embodiment.
Compared with the prior art, the invention has the following advantages:
1. The invention monitors the residual current and the power failure state of the power supply line in real time on line, relevant information data are reported to the master station regularly or actively in real time through NB-IoT, and relevant data can be inquired or displayed in an alarm way on a mobile phone APP carried by field operation and maintenance personnel.
2. The invention can monitor and record the maximum value of the minute and the daily residual current of the power supply line on line in real time, generate a corresponding data curve of the minute maximum residual current and the daily maximum residual current, and report the data curve to the master station at regular time for the power supply management department to analyze and early warn abnormal nodes, thereby being beneficial to the power supply management department to eliminate the abnormal nodes in advance and eliminate potential safety hazards in advance in a targeted manner.
3. When the monitored residual current of the power supply line exceeds the set threshold value, the invention actively reports the residual current overrun event to the master station for the on-site operation and maintenance personnel to carry out targeted investigation and processing before the total protection is not tripped, thereby greatly reducing the tripping frequency of the total protection and ensuring the safety of power supply and power utilization.
4. When abnormal power failure of a power supply line is monitored, the method and the system actively report the residual current event at the moment of power failure to the master station, are used for site operation and maintenance personnel to accurately position the range of power failure users in a distribution area, solve the power failure users more quickly and ensure that all the faults of the power failure users are safely tested and transmitted.
Example two
The distribution network terminal with the residual current detection function based on the NB-IoT comprises a shell and a power supply module, a current detection circuit module, a power failure detection circuit module, a storage module, an RS485 communication circuit module, an infrared receiving circuit module, an NB-IoT wireless communication module, a standby power supply circuit module, an LED indication circuit module and a micro control processing module which are arranged inside the shell.
the micro-control processing module of the embodiment is connected with the power supply module, the current detection circuit module, the power failure detection circuit module, the storage module, the RS485 communication circuit module, the infrared receiving circuit module, the NB-IoT wireless communication module, the standby power supply circuit module and the LED indicating circuit module.
the power supply module is used for supplying electric energy to the current detection circuit module, the power failure detection circuit module, the storage module, the RS485 communication circuit module, the infrared receiving circuit module, the NB-IoT wireless communication module, the LED indicating circuit module and the micro-control processing module;
The micro-control processing module is used for controlling and managing data generated by the current detection circuit module, the power failure detection circuit module, the storage module, the RS485 communication circuit module, the infrared receiving circuit module, the NB-IoT wireless communication module and the LED indicating circuit module;
The current detection circuit module is used for processing the collected residual current value to obtain an accurate residual current value;
The power failure detection circuit module is used for reporting the detected residual current value at the moment of power failure and the real-time point after the micro-control processing module detects a power failure signal;
the storage module is used for storing various data information of the distribution network system;
an NB-IoT wireless communication module for realizing the transmission of remote wireless data;
The standby power supply circuit module is used for actively reporting power failure event data at the moment of power failure to provide electric energy;
the LED indicating circuit module is used for indicating the running state and the communication state of the distribution network system;
the RS485 communication circuit module is used for setting and communicating local data parameters of the distribution network system through wires;
and the infrared receiving circuit module is used for setting and maintaining local data parameters of the distribution network system through wireless.
it should be noted that, a specific implementation method of the module disposed inside the housing in this embodiment is similar to that in this embodiment, and details are not repeated here.
the configuration terminal of this embodiment is joining in marriage net safety intelligent terminal promptly, and fixed mounting is in platform transformer area low pressure side or user side block terminal, and the residual current and the power failure state of real-time on-line monitoring power supply line, relevant information data report to the main website regularly or in real time initiatively through NB-IoT, can supply on-the-spot operation and maintenance personnel to inquire on the cell-phone APP that hand-carries moreover or report an emergency and ask for help or increased vigilance and show relevant data.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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 by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. an NB-IoT based networking system with residual current detection functionality, comprising: the device comprises a detection module, a setting module, an NB-IoT wireless communication module and a micro-control processing module; the micro-control processing module is respectively connected with the detection module, the setting module and the NB-IoT wireless communication module;
The micro-control processing module is used for controlling and managing data generated by the detection module, the setting module and the NB-IoT wireless communication module;
The detection module is used for detecting the processed residual current value and the residual current value at the moment of power failure;
the setting module is used for setting relevant parameters for local data of the distribution network system;
The NB-IoT wireless communication module is used for realizing the transmission of remote wireless data.
2. The NB-IoT based distribution network system with residual current detection function according to claim 1, wherein the detection module comprises a current detection circuit module, a power failure detection circuit module;
the current detection circuit module is connected with the micro-control processing module and is used for processing the collected residual current value to obtain an accurate residual current value;
and the power failure detection circuit module is connected with the micro control processing module and used for reporting the detected residual current value at the moment of power failure and the real-time point after the micro control processing module detects a power failure signal.
3. The NB-IoT-based network distribution system with the residual current detection function as claimed in claim 1, wherein the setting module comprises an RS485 communication circuit module and an infrared receiving circuit module;
The RS485 communication circuit module is connected with the micro-control processing module and is used for setting and communicating local data parameters of the distribution network system through wires;
the infrared receiving circuit module is connected with the micro-control processing module and is used for setting and maintaining local data parameters of the distribution network system through wireless.
4. the NB-IoT based networking system with residual current detection functionality according to claim 1, further comprising:
The storage module is used for storing data information in the distribution network system;
And the power supply module is used for providing electric energy for the detection module, the setting module, the NB-IoT wireless communication module, the storage module and the micro-control processing module.
5. The NB-IoT based networking system with residual current detection functionality according to claim 2, further comprising:
And the standby power supply circuit module is used for actively reporting the power failure event data at the moment of power failure and providing electric energy.
6. the NB-IoT based distribution network system with residual current detection function according to claim 4, further comprising an LED indicating circuit module for indicating the operation status and communication status of the distribution network system.
7. The NB-IoT-based network distribution system with the residual current detection function as claimed in claim 2, wherein the current detection circuit module is specifically configured to obtain an accurate residual current value from the collected residual current value through a sampling resistor, an operational amplifier, a micro-control processing module and current calibration; the collected residual current value is collected by a pincerlike residual current transformer.
8. The NB-IoT based power distribution system with residual current detection function as claimed in claim 5, wherein the backup power circuit module is implemented by a farad capacitor.
9. The NB-IoT based network distribution system with residual current detection function according to claim 1, wherein the data information in the storage module comprises maximum residual current per minute, maximum residual current per day, real time and auxiliary data information.
10. An NB-IoT based distribution network terminal with residual current detection function, characterized in that the NB-IoT based distribution network system with residual current detection function is provided with any one of the claims 1-9.
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Application publication date: 20191210 |