CN106249073A - Distribution network failure based on LoRa communication technology instruction system - Google Patents

Distribution network failure based on LoRa communication technology instruction system Download PDF

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Publication number
CN106249073A
CN106249073A CN201610563505.8A CN201610563505A CN106249073A CN 106249073 A CN106249073 A CN 106249073A CN 201610563505 A CN201610563505 A CN 201610563505A CN 106249073 A CN106249073 A CN 106249073A
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CN
China
Prior art keywords
module
unit
distribution network
lora
collecting
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CN201610563505.8A
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Chinese (zh)
Inventor
刘堂伟
刘文平
周显俊
欧术
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湖南长高思瑞自动化有限公司
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Application filed by 湖南长高思瑞自动化有限公司 filed Critical 湖南长高思瑞自动化有限公司
Priority to CN201610563505.8A priority Critical patent/CN106249073A/en
Publication of CN106249073A publication Critical patent/CN106249073A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Abstract

The invention discloses a kind of distribution network failure based on LoRa communication technology instruction system, including master station, collect unit and multiple collecting unit, multiple collecting units interval is installed on the collection point of distribution network line for being acquired the voltage x current data on collection point, described in collect and be connected by LoRa wireless telecommunications between unit with multiple collecting units, for the voltage x current data receiving on multiple collecting unit;Described collecting is connected by GPRS wireless telecommunications between unit with described master station, for the voltage x current data of different acquisition point being sent to master station and the command signal of reception master station.Distribution network failure based on the LoRa communication technology instruction system of the present invention has the advantages such as simple in construction, indicating fault precision height, reliable operation.

Description

Distribution network failure based on LoRa communication technology instruction system
Technical field
The invention mainly relates to distribution network technology field, refer in particular to the instruction of a kind of distribution network failure based on LoRa communication technology System.
Background technology
In distribution network automated construction, overhead type fault detector because of its need not transform primary equipment, can be charged The advantages such as installation, increasingly obtain the favor of grid company, especially at suburb and the Rural Power Distribution Network of load relative distribution.
As it is shown in figure 1, overhead type fault detector is mainly used in line fault monitoring and the instruction of field of distribution network;General The functional module of fault detector includes two parts: i.e. three collecting units and one collect unit, wherein three collecting units Being mainly used as A, B, C three-phase load electric current and the acquisition terminal of phase electric field, data and the remote signalling amount of collection are passed through by collecting unit Radio frequency communication mode is followed Zigbee network agreement and is sent to collect unit, collects unit again by GPRS and backstage, a distant place Carry out data interaction, thus realize the function that charge circuit remotely monitors;On the one hand, under normal conditions due to by Zigbee certainly Networking is made at the environment of transmission range and monitoring circuit thereof, and the actual range collecting unit and collecting unit installation not should be greater than 100 meters, otherwise, the stability of data transmission can not be protected;On the other hand, the main powering mode of collecting unit is typically logical Overload current acquisition coil automatic electricity getting, is not suitable for supporting the electronic device of high power consumption, is therefore using Zigbee MANET During transmission mode, the problem of collecting unit power consumption to be particularly contemplated.
Under current Zigbee networking model, fault detector one collects unit and three collecting units carry out group Net, at the scene in actual environment, the transmission range collecting unit and collecting unit is less than 100 meters, causes to upload collection single Unit measurement data and signal data be necessary for each collection point configuration one band GPRS communication module collect unit (at distribution At lines branch, if collection point apart from close can two groups of public one of collecting units collect unit).As shown in figure, therefore Barrier instruction circuit is mounted with five fault detectors, and each fault detector three acquisition terminals of configuration and one collect unit, Each collects unit and collects three collecting unit data then by GPRS and monitoring Background communication by Zigbee networking technology. From the above it can clearly be seen that the collecting unit of existing two distant overhead type fault detectors and collect between unit networking and lead to News communication, it is impossible to well take into account low energy consumption and require with long-distance transmissions: collecting unit is directly articulated on overhead transmission line, does not has Power supply reliably, and typically powered by CT power taking and set of cells thereof and mode, low-power consumption is required higher;Except this it Outward, based on existing communication pattern and compound mode, during reconnaissance installed by fault detector, there is cost and instruction Contradiction between precision: if improving pointing accuracy must increase packing density, and often organize collecting unit and be required for configuring one Collect unit, wherein collect unit composition and include MCU panel, GPRS module, lithium battery, solar panel, IP grade very High Stainless Steel Shell etc., accounts for 70%-80% in package unit cost;If it is considered that cost factor reduces packing density, then lead Causing indicating positions when fault occurs not accurate enough, line walking staff need to take a significant amount of time and energy in transition scattered two Patrol between mount point.
Summary of the invention
The technical problem to be solved in the present invention is that the technical problem existed for prior art, and the present invention provides one Distribution network failure based on the LoRa communication technology instruction system that kind simple in construction, precision are high and low in energy consumption.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is:
A kind of distribution network failure based on LoRa communication technology instruction system, including master station, collects unit and multiple collection Unit, multiple collecting units interval is installed on the collection point of distribution network line for entering the voltage x current data on collection point Row gathers, described in collect and be connected by LoRa wireless telecommunications between unit with multiple collecting units, for receiving multiple collection singly Voltage x current data in unit;Described collecting is connected by GPRS wireless telecommunications between unit with described master station, for inciting somebody to action The voltage x current data of different acquisition point send to master station and the command signal of reception master station.
Further improvement as technique scheme:
Described collecting unit includes the first control module, acquisition module, the first power module and a LoRa wireless communication module, Described first control module is connected with described acquisition module, the first power module and a LoRa wireless communication module respectively.
Described first power module includes main power supply and the back-up source that can mutually switch, and described main power supply includes using In the super capacitor of electric power storage with for the current transformer loop of power taking from distribution network line, described back-up source includes lithium electricity Pond.
Described collecting unit also includes fault processing module, described fault processing module and described first control module phase Even, for sending failure alarm signal when distribution network failure.
The described unit that collects includes the second control module, second source module, the 2nd LoRa wireless communication module and GPRS Wireless communication module, described second control module respectively with described second source module, the 2nd LoRa wireless communication module and GPRS wireless communication module is connected.
Described second source module includes standby lead battery, for providing the solaode of power supply under light conditions Plate and for unglazed according in the case of the super capacitor of power supply is provided.
Multiple collecting units and described collecting use time-sharing multiplex transmission data between unit.
Compared with prior art, it is an advantage of the current invention that:
The present invention distribution network failure based on LoRa communication technology instruction system, collecting unit and collect between unit use LoRa communication technology, makes collecting unit and the communication distance collecting between unit significantly lengthen, and single group is collected unit and can be supported Multiple collecting units, improve indicating fault precision on certain procedures;And disclosure satisfy that the low-power consumption demand of each unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of fault-indicating system in prior art.
Fig. 2 is the structural representation of the fault-indicating system of the present invention.
Fig. 3 is the structural representation of the collecting unit in the present invention.
Fig. 4 is flow chart during low-power consumption mode in the present invention.
Fig. 5 is the structural representation collecting unit in the present invention.
Fig. 6 is the sequential schematic diagram of time-sharing multiplex in the present invention.
In figure, label represents: 1, collect unit;11, the second control module;12, GPRS wireless communication module;13, second LoRa wireless communication module;14, second source module;2, collecting unit;21, the first control module;22, acquisition module;23, One power module;24, fault processing module;25, a LoRa wireless communication module.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
As shown in Figures 1 to 6, distribution network failure based on the LoRa communication technology instruction system of the present embodiment, including prison Controlling main website, collect unit 1 and multiple collecting unit 2, multiple collecting units 2 interval is installed on the collection point of distribution network line use In the voltage x current data on collection point are acquired, collect between unit 1 and multiple collecting unit 2 by LoRa channel radio News connect, for receiving the voltage x current data on multiple collecting unit 2;Collect and pass through GPRS between unit 1 and master station Wireless telecommunications connect, for the voltage x current data of different acquisition point being sent to master station and the life of reception master station Make signal.Distribution network failure based on the LoRa communication technology instruction system of the present invention, collecting unit 2 and collecting between unit 1 Using LoRa communication technology, make collecting unit 2 and the communication distance collected between unit 1 significantly lengthen, single group collects unit 1 energy Enough support multiple collecting unit 2, certain procedures improves indicating fault precision;And disclosure satisfy that the low-power consumption of each unit Demand.
As in figure 2 it is shown, in the present embodiment, under normal operation circumstances, can meet the LoRa communication of required communication rate away from From can reach 5km, spacious environment can reach 15km.Illustrating with relatively conservative 2km distance Zigbee communication, every 1km is as one Individual collection mount point, the most each collect 5 groups of collecting unit 2(that unit 1 can gather in the range of diameter 4km and includes that list is collected in the center of circle The collecting unit 2 of unit's 1 installation site).Relative to original pattern, if it is considered that cost dispersion is installed, then prior art exists In the case of cost increases on a small quantity, pointing accuracy improves 5 times;It addition, in a traditional way, it is assumed that every 1 kilometer a fault is installed Indicator, then under identical pointing accuracy, novel communication structure cost-saved more than 60%.If the environment at scene is good, suitable Degree expanded scope, then effect is more prominent.
As it is shown on figure 3, in the present embodiment, collecting unit 2 includes the first control module 21, acquisition module the 22, first power supply Module 23 and a LoRa wireless communication module 25, the first control module 21 respectively with acquisition module the 22, first power module 23 Being connected with a LoRa wireless communication module 25, wherein acquisition module 22 includes high-precision straight-through current transformer, is used for Gather distribution network load electric current, and send to control module after logic processing module and signal adjusting module, wherein at logic Reason module mainly carries out fault distinguishing by hardware circuit to detected circuit, if faulty signal, then directly by fault Signal passes to the first control module 21;Signal adjusting module mainly includes A/D sampling and filter circuit, is adopted by filtering and simulation After sample, eventually enter into the first control module 21 and measure load current amount.First power module 23 includes mutually switching Main power supply and back-up source, main power supply includes for the super capacitor of electric power storage with for using the magnetic core of high magnetic permeability from joining The current transformer loop of power taking in power network line, back-up source then includes lithium battery, when main power supply can not maintain global function During work, back-up source automatically engages.When main power supply recovers, automatically switch back to main power supply and power.Additionally collecting unit 2 Also include fault processing module 24, mainly include motor board turning circuit and indicator light circuit, fault processing module 24 and One control module 21 is connected, for sending failure alarm signal when distribution network failure;An other LoRa wireless communication module 25 1 aspects carry out intercommunication by SPI and the first control module 21, on the other hand by wireless LoRa communication mode and remittance It is mutual that collection unit 1 carries out information.It addition, collecting unit also includes failure wave-recording module (not shown), failure wave-recording module Be connected with the first control module 21, for distribution network load electric current is kept in, and when distribution network failure by fault before and after The load current of preset time period sends to the first control module 21, analyzes operation of power networks state for higher level's electric power dispatching system and carries It is provided with force data to support, fundamentally finds and release potential blind spot and crisis that grid operating monitoring exists, and be finally reached Improve the purpose of the reliability of electric power system dispatching and operation level, process accident quick-reaction capability, safe power supply.
As shown in Figure 4, in the present embodiment, it is considered to power consumption requirements, program circuit is such as in terms of logic control for collecting unit 2 Under: once monitor charge circuit fault, it is contemplated that charge circuit will power-off, main power supply loop dead electricity, now gather list Unit 2 power supply is mainly supported by back-up source, and system immediately turns on low-power consumption mode, to reduce kwh loss.
As it is shown in figure 5, in the present embodiment, collect unit 1 and include the second control module 11, second source module 14, second LoRa wireless communication module 13 and GPRS wireless communication module 12, the second control module 11 respectively with second source module 14, Two LoRa wireless communication modules 13 are connected with GPRS wireless communication module 12.Second source module 14 includes in light conditions The solar panel of lower offer power supply, for unglazed according in the case of the super capacitor of power supply and standby lead battery are provided. Collect unit 1 by LoRa communication mode collect collecting unit 2 in neighbouring predeterminable range scope (5Km) action message, Load current, short action electric current, first half-wave peak current/data such as landing operation electric current, line-to-ground electric field, then pass through The data collected are sent to master station by the communication modes such as GPRS.The inquiry of master station link, link can be received simultaneously Reset, always call the orders such as data, remote regulating (communication and fault detector parameter), remote control (board turning of fault detector and involution) together. Additionally also by GPS information to self poisoning, facilitate user to find equipment installation site, be master station and collecting unit Communication bridge between 2, plays uploading and assigning effect of data.
In the present embodiment, collect the multi channel frequency hopping skill of unit 1 and the radio communication employing OpenWSN of collecting unit 2 Art so that each Frame uses different frequencies at sending time slots, it is possible to avoid external disturbance and multipath decline impact, significantly Improve communication reliability.
In the present embodiment, multiple collecting units 2 and collect between unit 1 use time-sharing multiplex transmission data, to avoid leading to Letter conflict, the most as shown in Figure 6, the communication module collecting unit 1 retains portion of time groove, is used for issuing communication and sending letter Mark frame, the most then be divided into the time of equivalent in the case of retaining adequate allowance according to collecting unit 2 quantity connected Groove, by pair time and safety time difference, it is ensured that each collecting unit 2 has independent communication and transmission window contention-free.
It addition, LoRa Full Name in English is (Long Range wireless network), it is a kind of real based on spread spectrum Existing digital modulation techniques, uses Star Network framework, and compared with mesh network architecture, it is have lowest latency the simplest Network structure.Spread spectrum chip based on LoRa, it is possible to achieve node networking direct with concentrator is connected, constitutes star;For Node, can use gateway device to carry out relay networking connection at a distance.LoRa network can build wider wide of coverage Territory net infrastructure, it is also possible to build LAN by simple gateway device, as long as embedding LoRa chip in internet of things equipment Or module, can quickly realize networking and rapid configuration.Wide area network and two kinds of environment of LAN all can realize convenient networking, Compare with the Zigbee protocol being good at MANET, no matter there is in terms of transmission range and power consumption obvious advantage.With Lora Low-power consumption, long distance network technology for representing can break the bottleneck that interconnection technique apply in Internet of Things field, and final must To extensively application.
Although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention.Any it is familiar with ability The technical staff in territory, in the case of without departing from technical solution of the present invention scope, may utilize the technology contents pair of the disclosure above Technical solution of the present invention makes many possible variations and modification, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, Equivalent variations and modification, all should fall in the range of technical solution of the present invention is protected.

Claims (7)

1. distribution network failure based on a LoRa communication technology instruction system, it is characterised in that include master station, collect list Unit (1) and multiple collecting unit (2), multiple collecting units (2) interval is installed on the collection point of distribution network line for adopting Collection point on voltage x current data be acquired, described in collect between unit (1) and multiple collecting unit (2) pass through LoRa wireless Communication connects, is used for receiving the voltage x current data on multiple collecting unit (2);The described unit (1) that collects is main with described monitoring Connected by GPRS wireless telecommunications between standing, for the voltage x current data of different acquisition point being sent to master station and connecing Receive the command signal of master station.
Distribution network failure based on LoRa communication technology the most according to claim 1 instruction system, it is characterised in that described Collecting unit (2) includes the first control module (21), acquisition module (22), the first power module (23) and a LoRa channel radio Letter module (25), described first control module (21) respectively with described acquisition module (22), the first power module (23) and first LoRa wireless communication module (25) is connected.
Distribution network failure based on LoRa communication technology the most according to claim 2 instruction system, it is characterised in that described First power module (23) includes main power supply and the back-up source that can mutually switch, and described main power supply includes for electric power storage Super capacitor and for from distribution network line the current transformer loop of power taking, described back-up source includes lithium battery.
4. indicate system according to the distribution network failure based on LoRa communication technology described in Claims 2 or 3, it is characterised in that Described collecting unit (2) also includes fault processing module (24), described fault processing module (24) and described first control module (21) it is connected, for sending failure alarm signal when distribution network failure.
Distribution network failure based on LoRa communication technology the most as claimed in any of claims 1 to 3 instruction system, its Be characterised by, described in collect unit (1) and include the second control module (11), second source module (14), the 2nd LoRa channel radio Letter module (13) and GPRS wireless communication module (12), described second control module (11) respectively with described second source module (14), the 2nd LoRa wireless communication module (13) is connected with GPRS wireless communication module (12).
Distribution network failure based on LoRa communication technology the most according to claim 5 instruction system, it is characterised in that described Second source module (14) includes standby lead battery, for providing solar panel and the use of power supply under light conditions In the super capacitor providing power supply in the case of unglazed photograph.
Distribution network failure based on LoRa communication technology the most as claimed in any of claims 1 to 3 instruction system, its Being characterised by, multiple collecting units (2) and described collecting use time-sharing multiplex transmission data between unit (1).
CN201610563505.8A 2016-07-18 2016-07-18 Distribution network failure based on LoRa communication technology instruction system CN106249073A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107172724A (en) * 2017-06-19 2017-09-15 青岛海信网络科技股份有限公司 A kind of gateway based on LoRa technologies
CN107196417A (en) * 2017-07-21 2017-09-22 福州大学 Low-voltage distribution running status remote supervision system based on LoRa mechanicss of communication
CN107222931A (en) * 2017-07-10 2017-09-29 深圳市信锐网科技术有限公司 A kind of LoRa communication means and system
CN107566521A (en) * 2017-09-28 2018-01-09 河南汇纳科技有限公司 A kind of intelligent power distribution room environmental monitoring wireless sensing system based on LoRa
CN108335468A (en) * 2017-12-12 2018-07-27 中科(深圳)能源物联网有限公司 A kind of cable monitoring system
CN109814004A (en) * 2019-03-19 2019-05-28 广东电网有限责任公司 Distribution Fault Location System and method
CN109975651A (en) * 2017-12-28 2019-07-05 航天科工深圳(集团)有限公司 A kind of fault detector reduces the method and fault detector of energy consumption

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107172724A (en) * 2017-06-19 2017-09-15 青岛海信网络科技股份有限公司 A kind of gateway based on LoRa technologies
CN107172724B (en) * 2017-06-19 2019-12-20 青岛海信网络科技股份有限公司 Gateway based on LoRa technique
CN107222931A (en) * 2017-07-10 2017-09-29 深圳市信锐网科技术有限公司 A kind of LoRa communication means and system
CN107222931B (en) * 2017-07-10 2021-04-13 深圳市信锐网科技术有限公司 LoRa communication method and system
CN107196417A (en) * 2017-07-21 2017-09-22 福州大学 Low-voltage distribution running status remote supervision system based on LoRa mechanicss of communication
CN107566521A (en) * 2017-09-28 2018-01-09 河南汇纳科技有限公司 A kind of intelligent power distribution room environmental monitoring wireless sensing system based on LoRa
CN108335468A (en) * 2017-12-12 2018-07-27 中科(深圳)能源物联网有限公司 A kind of cable monitoring system
CN109975651A (en) * 2017-12-28 2019-07-05 航天科工深圳(集团)有限公司 A kind of fault detector reduces the method and fault detector of energy consumption
CN109814004A (en) * 2019-03-19 2019-05-28 广东电网有限责任公司 Distribution Fault Location System and method

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