CN110289593A - A kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things - Google Patents
A kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things Download PDFInfo
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- CN110289593A CN110289593A CN201910677491.6A CN201910677491A CN110289593A CN 110289593 A CN110289593 A CN 110289593A CN 201910677491 A CN201910677491 A CN 201910677491A CN 110289593 A CN110289593 A CN 110289593A
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Classifications
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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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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—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
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- H02J13/0075—
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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
- 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
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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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
Abstract
The invention discloses a kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things, comprising: earth leakage protective device, communication gate, leakage protection system cloud, client；Total protector that leaks electricity is capable of deciding whether human electric shock's electric current occur, and trip operation is carried out if there is human electric shock's electric current；Earth leakage protective device can the trip operation relevant parameter based on instruction to earth leakage protective device be modified；Leakage protection system cloud is able to carry out hidden trouble alarm and fault location；Client can configure the parameter of leakage protection system, check the data of leakage protection system, carry out control operation to leakage protection system；This system can accurately cut off electric shock accidents by human electric shock's ripple characteristic feature; it is designed for the characteristics of rural power grids; according to many factors automatic adjusument setting valve such as Various Seasonal condition, power supply area, rain and snow weather, loading condition; multistage earth leakage protective cooperates setup parameter, and can improve maintenance efficiency to localization of fault.
Description
Technical field
The present invention relates to power system security fields, and in particular, to a kind of intelligent rural power grids based on ubiquitous Internet of Things
Leakage protection system.
Background technique
With the continuous construction and upgrading of rural power grids, rural power service condition is taken on a new look significantly, power quality and confession
Electric reliability is greatly improved.National rural power grids have been carried out in an all-round way earth leakage protective device, to prevent because of rural power grids
Caused people, animal directly contact injures and deaths thing caused by electric shock and mediate contact electric shock in low-voltage overhead line road operation troubles and electricity consumption
Therefore.Although the all-round popularization of earth leakage protective device achieves significant effect, due to the particularity of rural power grids, rural area electric shock thing
Therefore still it is much higher than city, main cause is: whole educational level is relatively low, lacks safety utilization of electric power knowledge；Rural power grids condition is poor,
Such as wiring complexity, aging circuit, power equipment installation is unreasonable, electric protection device installation is not in place；Administrative staff are horizontal
It is not high, mismanagement.The particularity of rural power grids simultaneously, such as seasonality is obvious, temporary electricity equipment is more, operating mistake behaviour violating the regulations
Make the factors such as more, earth leakage protective poor product quality, causing the movement of earth leakage protective 80% is because of non-electric shock reason, and electric leakage is protected
The frequent malfunction of shield device, power outage take place frequently, and finally have to exit earth leakage protective device, form vicious circle, cause entire power grid
Lose creepage protection function.According to statistics, earth leakage protective operational percentage in some areas is no more than 70%, and earth leakage protective device serviceability rate is insufficient
75%, seriously threaten the operational safety of rural power grids.
Summary of the invention
In view of the above problems, the present invention provides a kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things, energy
Electric shock accidents is accurately cut off by human electric shock's ripple characteristic feature, is designed for the characteristics of rural power grids, according to not
The many factors automatic adjusument setting valve such as same seasonal conditions, power supply area, rain and snow weather, loading condition, multistage earth leakage protective
Cooperate setup parameter, and maintenance efficiency can be improved to localization of fault.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things is by intelligent rural power grids earth leakage protective device, communication
Gateway, intelligent rural power grids earth leakage protective device system cloud, groups of clients are at the intelligent rural power grids earth leakage protective device is divided into intelligent leakage
Electric total protector and Intelligent electric leakage middle rank protector.The communication of intelligent the rural power grids earth leakage protective device and the communication gate
Mode is wireless network (Lora (LoRaWAN), WiFi technology, electric power wireless private network) or cable network, networking universal at present
Mode is wireless Lora network.
The Intelligent electric leakage middle rank protector has creepage protection function, jumps rapidly when leakage current reaches preset threshold
Lock, precisely quickly.The total protector of intelligence not only has creepage protection function, jumps rapidly when leakage current reaches preset threshold
Lock, while there is the special comparison function of body current electric shock, guarantee under human body electrocution conditions whether to be more than that threshold value can trip, have
Effect protection personal safety, reduces risk of compensation.The Intelligent electric leakage middle rank protector receives intelligent leakage protection system cloud
Instruction, can be carried out parameters revision, and modified parameter includes: earth leakage protective trip current value, other trip protection definite values, protects and move
Make time etc..The total protector of Intelligent electric leakage receives the instruction of intelligent leakage protection system cloud, can be carried out parameters revision, repairs
Positive parameter includes: earth leakage protective trip current value, other trip protection definite values, operating time of protection, human electric shock's feature ginseng
Number, tripping similarity ratio etc..The instruction of modified parameter is all to carry out big data analysis by Intelligent electric leakage protection system cloud
It forms, realizes various environment, the protection self-adaptive sites in various seasons and earth leakage protective cooperation at different levels, so that protection is always
Meet on-site actual situations, is able to carry out between protections at different levels and works in coordination, supplement, linking.
Wherein, body current electric shock comparison function is realized in this system, is specifically included: body current electric shock typical waveform is logical
A large amount of Bioexperiment are crossed, are calculated using three element bio-impedance models and Cole-Cole impedance equation.According to practical low
Voltage electric grid voltage normal operation harmonic components, Bioexperiment electric shock waveform carry out Fourier's variation according to Cole-Cole theory,
Using least square fitting method, 4 parameter area values of canonical biometric electric shock Cole-Cole are calculated.In this, as typical human
Body electric shock parameter attribute code.The judgment principle of earth leakage protective movement is, when if more than earth leakage protective action value, protection is directly dynamic
Make, if be less than action value and be greater than 6mA, resistance value of leaking electricity under each frequency is acquired using each harmonic component of voltage and current, using most
Small two, which multiply fitting process, acquires 4 parameter of leak impedance Cole-Cole impedance, acts if 4 parameters are in Typical parameter ranges value, if
It is not failure to actuate in range.
The intelligent rural power grids earth leakage protective device has imported the fix informations such as fixed ID, address code before the mounting,
It is installed when installation according to the coding of design, system can read earth leakage protective device address code automatically after installation, automatically generate
Topological diagram, topology in include earth leakage protective device installation addresses and detail parameters, can manually supplement in addition to earth leakage protective device
Other systems equipment enters topological diagram.Cloud can issue specific earth leakage protective device by the fixation ID of earth leakage protective device and instruct.
When certain earth leakage protective device communication abnormality, exit state, protection act, Current Voltage Indexes Abnormality etc. in protection can be in rear end
It is highlighted in topological diagram, to realize the fault location and abnormality alarming function of earth leakage protective device.
The communication gate install to station in or fiber optic network overlay area, communication gate be divided into normal communication gateway and
Blind gateway is wirelessly mended, when intelligent electricity leakage protector is less than 3KM with gateway distance, intelligent electricity leakage protector is directly carried out with gateway
Communication when not having communication gate within intelligent electricity leakage protector 3KM, is wirelessly mended blind gateway and is entered as network trunk node
Network, intelligent electricity leakage protector are communicated by wirelessly mending blind gateway with communication gate.
The intelligent rural power grids leakage protection system cloud is realized using technology of Internet of things and is protected with the electric leakage of sensing terminal device intelligence
Protect device and carry out communication cohesion, collect the operation data of its upload, carry out hidden trouble alarm, when failure, collects fault waveform, carry out therefore
Barrier positioning.Intelligent electric leakage protects system cloud to analyze weather characteristics, region sexual factor, seasonal characteristic using big data technological synthesis,
And previous operation data is combined, Parameters of Earth-Leakage Protection amendment is formed, earth leakage protective device is distributed to, realizes that earth leakage protective intelligence is matched
It sets, self-adaptive sites.
Wherein, the parameters revision of this system includes: that weather conditions (humidity, wind-force, rainfall degree, snowfall degree) share three
Shelves value, the corresponding impact factor of each parameter and coefficient.When being in 1 grade (normal range (NR)), each impact factor coefficient
It is 1, weather conditions are influenced on protecting threshold parameter not at this time, and parameter is not corrected.When occurring, heavy rainfall weather, wind-force are exceeded
When, the impact factor of rainfall and wind-force becomes 2 from 1, and weather conditions influence protection threshold parameter, Protection parameters threshold value by
Normal value changes into the parameter under heavy rainfall and strong wind.When weather restores normal, impact factor coefficient becomes 1, electric leakage
Protection parameters threshold value also reverts to normal value.
Region factor is generally preset parameter, when equipment is in farmland, town center or factory district, it is initial just it has been determined that
But if its long-term electricity consumption and this area's electricity consumption, when not being inconsistent, system can automatically adjust this parameter, to change region factor ginseng
Number, earth leakage protective threshold value also can be according to the region factor parameter change later.Region factor is determined by long-term power load amount substantially
It is fixed.
For seasonal characteristic mainly according to parameter adjustment is carried out when slack season in busy farming season, Various Seasonal has an impact factor, season
The factor can determine again after region factor determines, determine parameter according to the long-term power consumption index of different regions Various Seasonal.
Such as Farmland, parameter is 1 when slack season, and Farmland seasonal characteristic is 1 at this time, and earth leakage protective threshold value is normal value；When busy farming season,
The parameter 2, at this time seasonal characteristic variation are 2, and earth leakage protective threshold value can also become the threshold value of busy farming season at this time.
Wherein region factor and seasonal characteristic factor are running a Nian Yihou, permit if there is electricity consumption load with original system
Perhaps power load amount statistics is not inconsistent, to be frequent trip accident, then at this point, system will adjust comprehensive power consumption index,
So as to adjust earth leakage protective threshold value, make its load local conditions.
Wherein, the big data analysis and machine learning in this system are as follows:
Voltage current waveform when power load amount when the data of system acquisition include: actual motion, fault actions, when
The weather conditions (humidity, wind-force, rainfall, snowfall) on ground, the actuation time of fault location, fault actions earth leakage protective device
Whether position, the earth leakage protective operation conditions of existing parameter (have false tripping, whether correctly whether movement, protection cooperate rationally before
Deng), season (slack season busy farming season spring, summer, autumn and winter), fault actions corresponding time, human electric shock when voltage current waveform etc..The number of foundation
It include earth leakage protective threshold data library according to library, which is directed to humidity, wind-force, rainfall degree, snowfall degree, Farmland, town
15 impact factors such as center, factory district, spring, summer, autumn, winter, busy farming season, slack season, whens different coefficients, are corresponding correct
Protect threshold value and response time.Establish Trouble Report database, including threshold value, failure when fault actions position, fault actions
Voltage current waveform when actuation time, failure, whether false tripping, protection are reasonable etc..Human electric shock's waveform database is established, is wrapped
Correctness etc. when current value when including electric shock voltage current waveform, Cole-Cole data parameters, parameter actions, parameter actions.
System big data analysis principle:
System big data mainly confirms two item datas, first is that earth leakage protective threshold value, second is that correctly human electric shock's waveform number
According to.The mathematical model of the analysis of earth leakage protective threshold value constructs impact factor mainly according to 15 impact factors and parameter
Mathematical model to obtain earth leakage protective threshold value, the building of mathematical model mainly with long-term running empirical value depending on.Human body touching
The mathematical model of electrical waveform is mainly calculated according to three element bio-impedance models and Cole-Cole impedance equation, analysis
When can update Cole-Cole parameter according to newest electric shock waveform, increase the accuracy that database judges human electric shock.
The client includes cell phone application, control centre's software, wechat platform etc., can be matched according to client
It sets, user can check all data of Intelligent electric leakage protection system by client, comprising: earth leakage protective operation data,
Fault location data, current earth leakage protective definite value etc., by division, the artificial adjustment that can control earth leakage protective device by user terminal
Earth leakage protective definite value, system setting etc..But consider for power supply safety, only control centre's software has point of control earth leakage protective device
Active operations function, cell phone application, the wechats such as conjunction, artificial adjustment earth leakage protective definite value, system setting can only check operation data,
And fault pre-alarming information and fault location report can be received, it is unable to the setting of active control earth leakage protective device.
One or more technical solution provided by the present application, has at least the following technical effects or advantages:
1. intelligent rural power grids leakage protection system framework is intelligent rural power grids earth leakage protective device, communication gate, intelligent agriculture
Net earth leakage protective device system cloud, client, sensing layer equipment wirelessly networking.
2. intelligent rural power grids leakage protection system was calculated using Internet of things system, big data, according to weather, region and season
Section realizes protection definite value, operating time of protection self-adaptive sites, and realizes the adaptive cooperation of protection.
3. intelligent rural power grids leakage protection system, automatically generates earth leakage protective device network topological diagram, using Internet of things system,
Realize earth leakage protective fault location, hidden trouble alarm etc..
4. the total protector of intelligence not only has creepage protection function, reaches preset threshold and trip rapidly, while there is human body
The special comparison function of electric current electric shock guarantees whether can trip more than threshold value under human body electrocution conditions, effective protection personal safety,
Reduce risk of compensation.
5. the central processing module of the total protector of intelligence uses the high-end framework of FPGA+DSP+ARM, DSP has EMIF
With HPI interface, guarantee its seamless connection with FPGA, ARM.
6. intelligent rural power grids leakage protection system built-in algorithm carries out automatic machine learning, root according to actual operation situation
Traffic-operating period according to specific area constantly learns, adjustment algorithm.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is system architecture schematic diagram of the invention；
Fig. 2 is the Typical Disposition scheme schematic diagram of the intelligent rural power grids earth leakage protective device of the present invention；
Fig. 3 is Intelligent electric leakage middle rank protector configuration diagram of the present invention；
Fig. 4 is the total protector configuration diagram of Intelligent electric leakage of the present invention；
Fig. 5 is the total protector earth leakage protective motion flow schematic diagram of Intelligent electric leakage of the present invention；
Fig. 6 is self-adaptive sites principle of work and power schematic diagram of the present invention；
Fig. 7 is machine learning principle of work and power schematic diagram of the present invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Refering to Figure 1, system architecture schematic diagram of the invention.
As shown in Figure 1, the present invention includes: intelligent rural power grids earth leakage protective device, communication gate, intelligent rural power grids earth leakage protective
Device system cloud, client, intelligent rural power grids earth leakage protective device are divided into the total protector of Intelligent electric leakage and the protection of Intelligent electric leakage middle rank
Device.The communication mode of intelligent rural power grids earth leakage protective device and communication gate be wireless network (Lora (LoRaWAN), WiFi technology,
Electric power wireless private network) or cable network, networking mode universal at present is wireless Lora network.
Intelligent electric leakage middle rank protector has creepage protection function, reaches preset threshold and trips rapidly, precisely quickly.Intelligence
Total protector not only has creepage protection function, reaches preset threshold and trips rapidly, while having body current electric shock especially ratio
To function, guarantee under human body electrocution conditions whether to be more than that threshold value can trip, effective protection personal safety reduces risk of compensation.
Intelligent electric leakage middle rank protector receives the instruction of intelligent leakage protection system cloud, can be carried out parameters revision, modified parameter packet
It includes: earth leakage protective trip current value, other trip protection definite value, operating time of protections etc..The total protector of Intelligent electric leakage receives intelligence
Can type leakage protection system cloud instruction, can be carried out parameters revision, modified parameter include: earth leakage protective trip current value, its
His trip protection definite value, operating time of protection, human electric shock's characteristic parameter, tripping similarity ratio etc..Modified parameter is all
Big data analysis is carried out by Intelligent electric leakage protection system cloud to form, and realizes that various environment, the protection in various seasons are adaptively whole
Earth leakage protective cooperations fixed and at different levels are able to carry out mutually so that protection always meets on-site actual situations between protections at different levels
It matches, supplement, link.
Communication gate is installed in station or fiber optic network overlay area, and communication gate is divided into normal communication gateway and wireless
Blind gateway is mended, when intelligent electricity leakage protector is less than 3KM with gateway distance, intelligent electricity leakage protector is directly led to gateway
Letter, when not having communication gate within intelligent electricity leakage protector 3KM, wirelessly mends blind gateway as network trunk node and enters net
Network, intelligent electricity leakage protector are communicated by wirelessly mending blind gateway with communication gate.
Intelligent rural power grids leakage protection system cloud is realized and sensing terminal device intelligence earth leakage protective device using technology of Internet of things
Communication cohesion is carried out, the operation data of its upload is collected, carries out hidden trouble alarm, when failure collects fault waveform, and it is fixed to carry out failure
Position.Intelligent electric leakage protects system cloud to analyze weather characteristics, region sexual factor, seasonal characteristic using big data technological synthesis, and ties
Previous operation data is closed, Parameters of Earth-Leakage Protection amendment is formed, is distributed to earth leakage protective device, realize earth leakage protective intelligent allocation,
Self-adaptive sites.
Client includes cell phone application, control centre's software, wechat platform etc., can be configured according to client, is used
Family can check all data of Intelligent electric leakage protection system by client, comprising: earth leakage protective operation data, failure are fixed
Position data, current earth leakage protective definite value etc., by that can control the division of earth leakage protective device by user terminal, artificial adjustment electric leakage is protected
Protect definite value, system setting etc..But consider for power supply safety, only control centre's software has the division of control earth leakage protective device, people
For active operations functions such as adjustment earth leakage protective definite value, system settings, cell phone application, wechat can only check operation data, and can connect
Fault pre-alarming information and fault location report are received, the setting of active control earth leakage protective device is unable to.
It please refers to shown in Fig. 2, the Typical Disposition scheme schematic diagram of intelligent rural power grids earth leakage protective device of the invention.
As shown in Fig. 2, Typical Disposition scheme are as follows:
The total protector of Intelligent electric leakage, which is installed to distribution, becomes exit, Intelligent electric leakage middle rank protector install to branch line and
Collect in electricity box.Intelligent electric leakage middle rank protector is divided into the intermediate protector of three-phase intelligent electric leakage and single-phase intelligent electric leakage middle rank protection
Device, the intermediate protector of three-phase intelligent electric leakage are installed to branch line, and the intermediate protector of single-phase intelligent electric leakage is installed to collection electricity box.
Current mounted family's earth leakage protective device is protected as end, is supplemented the system, Protection parameters and actuation time
Consider that the end protection of family's earth leakage protective device, guarantee will not move at the same time when parameter configuration.Total security can be carried out to middle rank protection
Standby, middle rank protection can be protected to end and carry out standby.The total protector of rural power grids electric leakage, main line and branch can be effectively reduced in scheme
Line malfunction probability, reduces the coverage of failure, to reduce scope of power outage, reduces power failure economic loss, it is often more important that be
A final insurance has been gone up in personal electrical shock safety protection.
Intelligent rural power grids earth leakage protective device has imported the fix informations such as fixed ID, address code before the mounting, installation
When installed according to the coding of design, system can read earth leakage protective device address code automatically after installation, automatically generate topology
Figure.It include the installation addresses and detail parameters of earth leakage protective device in topology.Other can manually be supplemented in addition to earth leakage protective device
System equipment enters topological diagram.Cloud can issue specific earth leakage protective device by the fixation ID of earth leakage protective device and instruct.When certain
Earth leakage protective device communication abnormality, state, protection act, Current Voltage Indexes Abnormality are exited in protection etc. can be in rear end topology
It is highlighted in figure, to realize the fault location and abnormality alarming function of earth leakage protective device.
It please refers to shown in Fig. 3, Intelligent electric leakage middle rank protector configuration diagram of the invention.
As shown in figure 3, Intelligent electric leakage middle rank protector is by sampling module, signal processing module, ADC, power module, test
Module, single-chip microcontroller, tripping module, protective switch, communication module composition.Acquisition module acquisition protection circuit voltage, electric current transmission
To signal processing module, signal processing module is filtered signal, amplify after be transferred to ADC, ADC converts a signal into number
Signal is sent to single-chip microcontroller and is analyzed.Single-chip microcontroller compares trip threshold after receiving signal, is such as more than trip threshold, publication tripping
It instructs and gives tripping module, cut-off protection circuit power supply, to prevent electric shock accidents or electric leakage accident.Tentative module examines electric leakage to protect
Can shield device correctly act, and whether mechanism is sensitive reliable, be made up of test button and resistance, artificially generate after by lower button
The fault-signal trigger protection movement of certain rated value.Protective switch can control the investment of intelligent electricity leakage protector and exit,
There is optional leeway under special or extreme case to operation maintenance personnel, cloud platform can be by chip microcontroller to the remote of protective switch
Process control.Communication module receives the data that single-chip microcontroller has encoded, and is communicated with communication gate, or receives cloud and pass through
The data of communication gate publication are transferred to single-chip microcontroller.The calculating analysis processing function of the entire intelligent electricity leakage protector of chip microcontroller
Energy.Single-chip microcontroller receives cloud platform instruction and carries out parameter setting, the data such as modification protection act threshold value, actuation time, when received
It when acquiring signal greater than set threshold value, reacts rapidly, publication trip command is to the module that trips.The investment of single-chip microcontroller reception cloud platform
With exit instruction, it is transferred to protective switch module, realizes the investment of Intelligent electric leakage middle rank protector and exit.Single-chip microcontroller is by failure
When electric current, voltage waveform, and the case where movement be transferred to cloud platform, used for its analysis, form Trouble Report and tune
Whole Protection parameters.Single-chip microcontroller is powered by power module.
It please refers to shown in Fig. 4, the total protector configuration diagram of Intelligent electric leakage of the invention.
As shown in figure 4, the total protector of Intelligent electric leakage is by sampling module, signal processing module, ADC, power module, test mould
Block, central processing module, tripping module, mode selection module, communication module composition.Acquisition module acquisition protection circuit voltage,
Electric current is transferred to signal processing module, signal processing module is filtered signal, amplify after be transferred to ADC, ADC turns signal
It is changed to digital signal and is sent to central processing module and analyzed.Central processing module divides acquisition signal after receiving signal
Analysis, comparison human body typical case electric shock condition code and earth leakage protective threshold value, are such as more than condition code similarity threshold or earth leakage protective
Threshold value, publication trip command give tripping module, cut-off protection circuit power supply, to prevent electric shock accidents or electric leakage accident.Communication
Module realizes the wired and wireless communication of electric leakage total protection and communication gate.Can tentative module examine earth leakage protective device positive positive motion
Make, whether mechanism is sensitive reliable, is made up of test button and resistance, and the event of certain rated value is artificially generated after by lower button
Hinder the movement of signal trigger protection.Mode selection module can control the investment of the total protector route protection function of Intelligent electric leakage and move back
Out, there is optional leeway under special or extreme case to operation maintenance personnel, cloud platform can be realized by central processing module to guarantor
Protect the long-range control of switch.Even if mode selection module has selected route protection function to be in and exited state, people can not be also exited
Body electrical shock safety defencive function, the protection threshold value more than setting will not trip at this time, but similar to person electric shock characteristic feature code
When equally can be carried out movement, personal safety can always be guaranteed.In the case where extreme and special, leak current fault point is such as met by chance
It is difficult to find, it is difficult to which when eliminating, alternative exits route protection function, avoids earth leakage protective device Frequent trip, causes to power
Area frequently has a power failure, but still saves human body electrical shock protection function, and life is made always to be protected safely.Due to can a direct key
It exits easy to operate, also avoids part electrician because of trouble and remove earth leakage protective device, or the phenomenon that around more earth leakage protective device.In
Processing module is entreated to use the high-end framework of FPGA+DSP+ARM, FPGA is responsible for Signals collecting function, and DSP is responsible for calculating analysis function
Can, ARM is responsible for communication function, and DSP has EMIF and HPI interface, guarantees its seamless connection with FPGA, ARM.ARM is from DSP
It reads the data encoded and cloud platform is uploaded to by communication gate.ARM is instructed and is passed from communication gate reception cloud platform
It is defeated by DSP and carries out parameter setting, the data such as modification protection act threshold value, actuation time, human electric shock's condition code.FPGA acquisition
The digital signal that ADC is transmitted is transferred to DSP after processing, and DSP carries out analytical calculation, when received acquisition signal is greater than set
It when protecting threshold value, reacts rapidly, publication trip command gives tripping module.Central processing module receive cloud platform investment with exit
Instruction, is transferred to mode selection module, realizes the investment of the total protector route protection function of Intelligent electric leakage and exits.Central processing
Electric current, voltage waveform when module is by failure, and the case where movement, are transferred to cloud platform, use for its analysis, form failure
Report and adjustment Protection parameters.Central processing module is powered by power module.
It please refers to shown in Fig. 5, the total protector earth leakage protective motion flow schematic diagram of Intelligent electric leakage of the invention.
As shown in figure 5, the total protector earth leakage protective motion flow schematic diagram of Intelligent electric leakage.Acquisition module acquisition protection circuit
Voltage, electric current are transferred to signal processing module, signal processing module is filtered signal, amplify after be transferred to ADC, ADC will
Signal, which is converted to digital signal and is sent to central processing module, to be analyzed.Central processing module is it is first determined whether there is mutation electricity
Stream, if continuing to acquire signal without acquisition module, if there is separation mutation current.Central processing module by isolated mutation current with
Earth leakage protective threshold value compares, if being more than earth leakage protective threshold value, central processing module directly issues trip command, if being less than jump
Lock threshold value then extracts its condition code.When route protection function, which is in, exits state, without earth leakage protective threshold value comparison, directly
Extract condition code.It is compared with original human electric shock's condition code, judges whether to be more than condition code similarity threshold, if being more than straight
Sending and receiving cloth trip command.The initial human electric shock's condition code of system is calculated by canonical biometric electric shock condition code, and system can also root
Study adjustment is carried out according to the electrocution conditions of human body after operation, guarantees the accuracy of human electric shock's condition code.
It please refers to shown in Fig. 6, self-adaptive sites principle of work and power schematic diagram of the invention.
As shown in fig. 6, a kind of self-adaptive sites function of the intelligent rural power grids leakage protection system based on ubiquitous Internet of Things.
System is able to achieve self-adaptive sites, and protection definite value, operating time of protection are that big data calculates acquisition according to the local situation,
Intelligent adjustment in real time.Self-adaptive sites are determined jointly by comprehensive power consumption index and integrated environment index.It is wherein comprehensive to use
Electric index is made of regional Characteristics and seasonal characteristic, regional Characteristics determined according to their location power utilization environment (including
Farmland, town center, factory district etc.), different regions power consumption index is determined according to previous operating experience；Seasonal characteristic is according to agriculture
Do not have to electricity consumption when busy, slack season and is determined that Various Seasonal has different indexs.Integrated environment factor is according to real-time weather situation institute
Determine, system can dock weather system, calculated and obtained according to different weather conditions, weather conditions mainly have (humidity, wind-force,
Rainfall degree, snowfall degree), weather conditions are mainly determined according to the power consumption index in the case of different weather, while can be in pole
End weather condition such as summer high temperature, heavy rainfall, heavy snowfall etc. adjusts relevant parameter when being easy to happen earth leakage protective tripping.
It please refers to shown in Fig. 7, machine learning principle of work and power schematic diagram of the invention.
As shown in fig. 7, a kind of machine learning function of the intelligent rural power grids leakage protection system based on ubiquitous Internet of Things.System
The built-in big data algorithm of system can also carry out automatic machine learning adjustment according to actual operation situation, allow the system to
Protected area is more targetedly adapted to, continuous study adjustment algorithm is carried out according to the traffic-operating period of this area.Work as intelligence
For earth leakage protective device route protection in when exiting state, system is notified that maintenance personnel carries out on-site maintenance.When a fault has occurred,
Whether system can correctly act according to earth leakage protective device and be learnt, if incorrect movement, automatic fine tuning internal algorithm make
It obtains parameter adjustment and meets correct action request.When there is the generation of personnel's electric shock accidents, system can also acquire electric shock accidents waveform, with
Former human electric shock's waveform is compared, and adjusts human electric shock's condition code and similarity threshold.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of intelligent rural power grids leakage protection system based on ubiquitous Internet of Things, which is characterized in that the system comprises:
Earth leakage protective device, communication gate, leakage protection system cloud, client；Earth leakage protective device include: the total protector of electric leakage and
Leak electricity intermediate protector；Earth leakage protective device is communicated to connect by communication gate and leakage protection system cloud, and leak electricity total protector
It is capable of deciding whether human electric shock's electric current occur, trip operation is carried out if there is human electric shock's electric current；Earth leakage protective device can
The instruction that leakage protection system cloud is sent is received, the trip operation relevant parameter of earth leakage protective device is repaired based on instruction
Just；Leakage protection system cloud receives the operation data that earth leakage protective device uploads, and carries out hidden trouble alarm, collects in electric network fault
Fault waveform carries out fault location；Client and leakage protection system cloud communicate to connect, and client can pass through earth leakage protective
System cloud configures the parameter of leakage protection system, and checks the corresponding data of leakage protection system, and to leakage
Electric protection system carries out corresponding control operation.
2. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric middle rank protector receive the modified parameter of instruction that leakage protection system cloud is sent include: earth leakage protective trip current value,
Other trip protection definite values, operating time of protection；Total protector that leaks electricity receives the instruction amendment that leakage protection system cloud is sent
Parameter include: earth leakage protective trip current value, other trip protection definite values, operating time of protection, human electric shock's characteristic parameter,
Trip similarity ratio；The instruction of modified parameter is to carry out big data analysis generation by leakage protection system cloud.
3. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric total protector judges whether human electric shock's electric current occur, specifically includes:
Pass through biology electric shock experiment, acquisition body current electric shock shape information；
Body current electric shock shape information based on acquisition, utilizes three element bio-impedance models and the impedance side Cole-Cole
Journey, which calculates, obtains body current electric shock typical waveform；
According to practical low voltage electric network voltage normal operation harmonic components, body current electric shock typical waveform, managed according to Cole-Cole
By progress Fourier's variation calculates 4 default human bodies of canonical biometric electric shock Cole-Cole using least square fitting method
Electric shock parameter area value；
The real-time electric leakage parameter that total protector obtains that will leak electricity is compared with default human electric shock's parameter area value, based on comparing
As a result judge whether human electric shock's electric current occur.
4. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Non-electricity protector has imported corresponding fix information before the mounting, comprising: fixed ID, address code, according to design when installation
Coding is installed, and leakage protection system can read earth leakage protective device address code automatically after installation, automatically generates topological diagram,
Include the installation addresses and detail parameters of earth leakage protective device in topology, can be supplemented in addition to earth leakage protective device by client
Other systems equipment enters topological diagram.
5. the intelligent rural power grids leakage protection system according to claim 4 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric protection system cloud can issue specific earth leakage protective device by the fixation ID of earth leakage protective device and instruct；When certain earth leakage protective
Device communication abnormality or when exiting state or protection act or Current Voltage Indexes Abnormality in protection, is highlighted in topological diagram
It has been shown that, realizes the fault location and abnormality alarming of earth leakage protective device.
6. the intelligent rural power grids leakage protection system according to claim 2 based on ubiquitous Internet of Things, which is characterized in that leakage
Power load amount, electricity when the data that electric protection system cloud acquire needed for big data analysis include: power grid actual motion
Voltage current waveform when net fault actions, local weather conditions, the electric leakage of the actuation time of fault location, fault actions are protected
Voltage and current when protecting device position, the earth leakage protective operation conditions of existing parameter, season, fault actions corresponding time, human electric shock
Waveform；
Data based on acquisition establish corresponding big data analysis database, comprising: earth leakage protective threshold data library, failure report
Accuse database, human electric shock's waveform database；Being stored in earth leakage protective threshold data library influences earth leakage protective threshold value value
Impact factor data；Trouble Report databases contain: threshold data, failure when fault actions position data, fault actions
Voltage current waveform data when actuation time data, failure, whether false tripping data, protection whether reasonable data；Human electric shock's wave
Graphic data is stored in library: electric current when electric shock voltage current waveform data, Cole-Cole data parameters data, parameter actions
Correctness data when Value Data, parameter actions.
7. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric protection system cloud utilizes big data comprehensive analysis weather characteristics, region sexual factor, seasonal characteristic, and combines previous operation number
According to formation Parameters of Earth-Leakage Protection amendment is sent to earth leakage protective device.
8. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric total protector, which is installed to distribution, becomes exit, and the intermediate protector that leaks electricity is installed to branch line and collection electricity box；Electric leakage middle rank
Protector is divided into three-phase and leaks electricity intermediate protector and single-phase earth leakage middle rank protector, three-phase leak electricity intermediate protector install to point
At branch line, single-phase earth leakage middle rank protector is installed to collection electricity box.
9. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that leakage
Electric middle rank protector include: sampling module, signal processing module, ADC, power module, tentative module, single-chip microcontroller, tripping module,
Protective switch, communication module；Acquisition module acquisition protection circuit voltage, electric current are transferred to signal processing module, signal processing mould
Block is filtered signal, amplify after be transferred to ADC, ADC, which converts a signal into digital signal and is sent to single-chip microcontroller, to be analyzed；
Single-chip microcontroller compares trip threshold after receiving signal, if being more than trip threshold, publication trip command gives tripping module, tripping protection electricity
Road power supply；Can tentative module for examining earth leakage protective device work normally；Protective switch is for controlling the intermediate protector that leaks electricity
Investment with exit；Leakage protection system cloud passes through long-range control of the chip microcontroller to protective switch；Communication module receives
The data that single-chip microcontroller has encoded, are communicated with communication gate, or are received leakage protection system cloud and passed through communication network
The data for closing publication are transferred to single-chip microcontroller；Chip microcontroller is entirely leaked electricity the calculating analysis processing function of intermediate protector；Monolithic
Machine receives the instruction of leakage protection system cloud and carries out parameter setting, and the data such as modification protection act threshold value, actuation time work as reception
Acquisition signal be greater than set threshold value when, publication trip command to tripping module；Single-chip microcontroller receives leakage protection system cloud
Investment and exit instruction, are transferred to protective switch module, realize the investment of the intermediate protector that leaks electricity and exit；Single-chip microcontroller is by failure
When electric current, voltage waveform, and movement the case where be transferred to leakage protection system cloud, for its analysis use, formed failure
Report and adjustment Protection parameters；Single-chip microcontroller is powered by power module.
10. the intelligent rural power grids leakage protection system according to claim 1 based on ubiquitous Internet of Things, which is characterized in that
Total protector that leaks electricity includes:
Sampling module, signal processing module, ADC, power module, tentative module, central processing module, tripping module, mode choosing
Select module, communication module composition；Acquisition module acquisition protection circuit voltage, electric current are transferred to signal processing module, signal processing
Module is filtered signal, amplify after be transferred to ADC, ADC converts a signal into digital signal and is sent to central processing module
It is analyzed；Central processing module receive signal after to acquisition signal analyze, comparison human body typical case get an electric shock condition code and
Earth leakage protective threshold value, if being more than condition code similarity threshold or earth leakage protective threshold value, publication trip command gives tripping module, cuts
Disconnected protection circuit power；Communication module realizes the communication of leak electricity total protector and communication gate；Tentative module is for examining electric leakage
Can total protector work normally；Mode selection module can control the investment of total protector route protection function of leaking electricity and move back
Out；The long-range control to protective switch is realized by central processing module in leakage protection system cloud；Central processing module uses
FPGA+DSP+ARM framework, FPGA are responsible for Signals collecting function, and DSP is responsible for calculating analytic function, and ARM is responsible for communication function, ARM
The data encoded are read from DSP, and leakage protection system cloud is uploaded to by communication gate；ARM connects from communication gate
It receives leakage protection system cloud and instructs and be transferred to DSP progress parameter setting, modify protection act threshold value, actuation time, human body
Electric shock condition code data；The digital signal that FPGA acquisition ADC is transmitted, is transferred to DSP after processing, and DSP carries out analytical calculation, when
When received acquisition signal is greater than set protection threshold value, publication trip command gives tripping module；Central processing module receives electric leakage
The investment and exit instruction in protection system cloud are transferred to mode selection module, realize total protector route protection function of leaking electricity
Investment with exit；Electric current, voltage waveform when central processing module is by failure, and the case where movement, are transferred to earth leakage protective
System cloud is used for its analysis, forms Trouble Report and adjustment Protection parameters；Central processing module is carried out by power module
Power supply.
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