One kind being based on wireless communication technique distribution intelligent monitor system and its application method
Technical field
The invention belongs to electrical equipment technical fields, and in particular to one kind being based on wireless communication technique distribution intelligent monitoring system
System and its application method.
Background technology
Distribution refers to that the network of distributional effects is mainly played in power network, according to distribution line difference, is divided into overhead distribution
Net, cable power distribution network and aerial cable mixing power distribution network, important component of the power distribution network as China's electric system, safety
Stable operation plays an important role, and in China, distribution system mainly uses isolated neutral or compensated distribution network.
Since circuit is long, node is more for distribution, often breaks down, wherein the rate of breaking down is up to singlephase earth fault, 10kV matches
The common major failure of power grid has:
1, lightning fault and reason
Most common power distribution network accident is exactly lightning strike accident.Since 10kV circuits carry out aerial erection, and it sets up path
It is longer, it is located at open space, the rarely towering buildings around power distribution network more.Therefore, in annual thunderstorm season by thunder
The probability hit is larger, this is one of common 10kv overhead transmission lines failure.Common phenomenon of the failure breaks, distribution transforming is burnt, insulator
Explosion or breakdown etc. easily cause the circuit of 10kV indirectly short-circuit or ground connection when by being struck by lightning.
2, fall open fuse failure and reason
Falling open fuse failure has following four, and fusing is accidentally fallen, malfunction, fusion tube are burnt out and melt is accidentally blown.This is several
Kind failure, which all exists, equips bad reason, but also different.For example the main reason for fusion tube malfunction is that assembly is bad,
Mechanical corrosion or card group, interface melt scar;The reason of fusion tube accidentally falls is that fusion tube itself is second-rate, and assembly is bad, meets with strong wind
Will fall or fuse above wear at right-angle protrusion in touch spring insufficient pressure, duckbilled or burnt, also
A kind of reason be exactly when operating fusion tube do not close tightly.
3, anti-external force is taken to destroy measure
External force, which is destroyed, to be primarily referred to as vehicles peccancy to the collision of electric pole or hangs the bracing wire of electric pole, causes electric pole disconnected
It splits, high-voltage line bottoms out electric discharge.
4, overload
Will be in the operation of 10kv circuits, due to Earlier designs, it is too fast not account for the taiwan area load growth, causes line
Load is passed by, line temperature can increase, and shorten circuit and use birthday noodle.
A kind of Insulation test, earthing searching device and method and one are disclosed in Granted publication is CN101666851B
Kind utilizes the method for principle of absorption assessment circuit and insulation of electrical installation aging performance and the remaining life that insulate using described device.
The insulating ground test and earthing searching device are made of host and signal receiver;The signal receiver is used for receiving quilt
Detect signal;The host includes CPU, power supply unit, high voltage unit, insulation/voltage tester unit, earthing test unit, connects
Ground searching unit, reset unit, memory cell, input-output unit and communication unit;And its insulation, voltage, ground measuring
The application method of examination and earthing searching device;And a kind of use described device utilizes principle of absorption assessment circuit and electrical equipment
The method of insulation ag(e)ing situation and the remaining life that insulate;But itself and be not implemented and quickly search ground connection source, and to incident circuit into
Then position data and ground connection source data are issued operation maintenance personnel, so that it is gone to and safeguarded by line flag.
It is remotely monitored in a kind of transformer substation grounding wires based on wireless sensor network of Authorization Notice No. CN203119628U
Device comprising:Host module, wireless sensor network base station, the long-range monitoring node of ground wire and codified earthing or grounding means, institute
The host module stated connects wireless sensor network base station by wired mode, and the wireless sensor network base station passes through number
The multiple long-range monitoring nodes of ground wire of word wireless telecommunications connection, are grounded long-range monitoring node and are connect with codified earthing or grounding means.
Codified earthing or grounding means includes using the codified grounding head and codified ground stud of magnetic address coding, and codified grounding head is solid
It is scheduled on codified ground stud and is electrically connected, the long-range monitoring node of ground wire is fixed on codified ground stud;It can
It encodes and is logged in the database of host module together with the physical location and address coding of ground stud.But itself and be not implemented quick
Ground connection source is searched, and incident circuit is marked, position data and ground connection source data are then issued into operation maintenance personnel, before making it
It is past to be safeguarded.
Since power distribution network is the link that an important user is connected directly with electric system, which is comparable
Complexity, current detection method can only be detected in line outlet position equipped with sensor in power distribution station or switching station, if
Line current is excessive, overload operation, and distribution relay protection is unsound, is protected substantially by fuse, fuse sensitivity
It spends poor, manually directly operates a switch operation in power distribution station substantially, inefficiency, and full cut-off, expansion, which stop, to be realized to whole circuit
Electric area.In case of earth fault, and in power distribution station, circuit is operated a switch operation one by one, and to whole circuit full cut-off, seriously
Residential electricity consumption quality is influenced, power supply reliability is poor.
Distribution relay protection generally uses current quick and the overcurrent protection with the time limit at present.
Current quick increases and the current protection of snap action for reacting on amplitude of short circuit, and current quick-breaking is protected
Protector has the advantages of simple and reliable, to be swift in motion, thus has been widely used.The disadvantage is that impossible protection circuit is complete
It is long, and protection domain is directly influenced by changes of operating modes.When there are many system operation mode variation or protected circuit
Length very in short-term, fast tripping protection may not have protection domain, thus cannot use.
Overcurrent protection with the time limit increases by one section of protection with time limit action, for cutting when electric current is more than protection definite value
Except the failure on this circuit, the overall length of this circuit can be protected, and there is enough sensitivitys;Followed by meeting above-mentioned requirements
Under the premise of, make every effort to minimum operation time limit;In subordinate's line short, ensure that subordinate's protection preferentially cuts out failure, it is full
Foot selectivity requires.Protection when also as overload generally uses overcurrent protection.Overcurrent protection typically refers to its startup
The protection that electric current is adjusted according to maximum load current is avoided.
Either current quick and the overcurrent protection with the time limit, are all turned off whole circuit, expand scope of power outage,
Influence resident living power utility.
Based on the above issues, it is a kind of based on wireless communication technique Intelligent control system for distribution network and its user that there is an urgent need for exploitations
Method, to solve the deficiency of problems.
Invention content
It is an object of the invention to solve the deficiency in the presence of above-mentioned technology, provides and a kind of matched based on wireless communication technique
Net intelligent monitor system and its application method draw distribution primary system by the way of big data acquisition on monitoring backstage machine
Figure, field data are transmitted to background server by mobile 3G/4G networks, line fault are checked by monitor current in real time
Range, and faulty section by tripping and being identified at a distance, non-faulting section continues to run with, and improves power supply reliability, then
Notice operation maintenance personnel, which is gone to, to be repaired, and the operation data of acquisition is fed back to engineer station, is used for data correction;Greatly
The breakdown maintenance time is shortened, economic benefit is improved;And analyzed and determined by ripe big data cloud computing, instruct power distribution network
Safe operation.
A kind of application method based on wireless communication technique distribution intelligent monitor system:
1)Using design, construction drawing, distribution primary system figure is drawn using graphics software on monitoring backstage server;
2)Circuit breaker trip control node and current sense module information are transmitted to background server in real time;
3)Monitoring backstage server calculates every circuit per phase adjacent current sensing module current differential in real time by cloud computing
Absolute value;
4)If it find that certain circuit phase current difference is more than definite value, monitoring backstage server module by radio communication, to
The breaker sends trip command, and breaker trips after being connected to trip command, refuses to jump if the breaker is problematic, can also set
Time, upper level tripping;
5)While monitoring module field observation, current sense module of the monitoring backstage server on circuit sends alarm and refers to
It enables, operation ground connection identification module is made to become red;
6)Monitoring backstage server sends handling failure instruction to equipment O&M, and be shown with data are stored in database, at the scene
Operation maintenance personnel can understand fault message in real time by the APP softwares of intelligent mobile terminal;
7)Data feedback to engineer station, is carried out comparing by operation maintenance personnel so that engineer station can carry out data real
Shi Xiuzheng;And after troubleshooting, all data are stored in database, achieves and preserves.
One kind being based on wireless communication technique distribution intelligent monitor system, including the multiple open circuits being arranged on transmission line of electricity
Device is arranged at the breaker multiple current sense modules on transmission line of electricity, is connected with the current sense module
Monitoring module, the monitoring backstage server with multiple current sense module wireless signal interconnections, takes with the monitoring backstage
The cloud computing module of business device signal interconnection, database, the intelligent mobile terminal with monitoring backstage server signal interconnection;
The current sense module includes pedestal, is set on the base and a side and the hinged lid of the pedestal, setting exist
With the matched lower groove of lid on the pedestal, it is arranged on the lid and the matched upper groove of the lower groove, institute
State in upper groove and lower groove and be respectively provided with ferromagnetic silicon steel sheet, the coil being wrapped on the ferromagnetic silicon steel sheet, the coil with set
It sets the low power processor in pedestal lower part to be connected, the low power processor is connected with ground connection identification module, the bottom
The ADC module that setting is interconnected for data conversion and with the low power processor signal in, is used for signal and breaker
It the communicating wireless signals module interacted with monitoring backstage server and is set on the pedestal for being locked with lid
Locking module.
The locking module includes the threaded hole being arranged on the lid, be set on the base for the threaded hole
Matched bolt, and the operation ring in the bolt lower end is set.
It is additionally provided with the locating module for positioning and being interconnected with low power processor signal in the pedestal, and is used for
The fiber optic data communication interface of data exchange.
The locating module includes for GPS geo-location system or triones navigation system.
The communicating wireless signals module is 3G/4G communication modules.
The ground connection identification module includes red light and green light, and is arranged for being connected with low power processor in the pedestal
The reserve battery connect.
The monitoring backstage server includes the router interconnected with current sense module wireless signal and the router
Signal interconnect background server, with the background server signal interconnection simulating display screen, and with the background server
The engineer station being connected.
Wherein, for step 4)The protection definite value of middle use is adjusted according to line impedance and payload, primary electricity
Stream be I, actuation time t, this route protection definite value adjust for:I=200A, t=1.2S or I=120A, t=1S, or
180A, t=2S;
Setting time is at least 1.5S.
The present invention is directed to the deficiencies in the prior art, certain point generation problem needs to stop whole circuit, increases power failure
The area of time and power failure, influence whether living standards of the people;When measuring distribution line length, it is fixed to be utilized in background computer
The data that position module is sent, calculate the length of every span and every circuit, calculating speed is fast, need not send a large amount of personnel on site's cores
It looks into, saves manpower.
The technology that the present invention uses is to upload to background server using the multiple sensor acquisition electric currents of circuit, carry out real
When monitor, monitoring backstage calculating calculates every circuit per phase current absolute difference in real time, minimum or be zero using absolute value,
Prove that the circuit is normal.
If a certain point failure of circuit, the reaction of electric current is to uprush, and is all increased from the node to bus bar side electric current, electric current
Difference very little is zero, and the node to line side does not have failure, electric current to be basically unchanged, and malfunctioning node front and rear sides current differential
It is very big, it is more than the protection time limit, monitoring backstage starts circuit breaker trip, while spot sensor sends out red by wireless network
Instruction.
It is excessive or certain point is grounded, the node to bus bar side current break if it is certain node load electric current, it should
Node is basically unchanged to line side, also with where the good decision problem of current differential absolute value before and after node, is jumped in real time
Lock is protected.
In monitoring backstage, monitoring personnel finds that certain segment fault either overload or needs Load adjustment to distribute, by backstage
Operating personnel manually select tripping, and responsible consumer, the invention is protected to have flexibility.
In addition, can also increase camera on current sensor, break down, if certain biphase current is uprushed, adjustment camera shooting
Head can tentatively judge it is that line to line fault or other reasons occur, be convenient for next step troubleshooting, directly be taken by operation maintenance personnel
It goes to and repairs with corresponding tool, and the operation data of acquisition is fed back into engineer station, be used for data correction;Greatly
Shorten difficulty and the maintenance time of maintenance;And intelligent decision is realized by ripe big data cloud computing analysis, it reduces artificial
The safe operation of power distribution network is instructed in the interference of factor.
In addition, the curent change on circuit can be quickly detected using current sense module, data are then passed through into nothing
Line communication network passes to monitoring backstage server, and has monitoring backstage server to carry out data cloud computing, determines the area of problem
Between, and be identified, then so that operation maintenance personnel goes to scene to carry out Quick overhaul by mobile terminal, while can be according to electric current
Variation obtain the variation of load, if continuing high load the phenomenon that it will cause temperature increases there are no the condition for reaching tripping,
Backstage operation maintenance personnel can be reminded to be paid close attention to, and carry out the adjustment of power circuit.
In addition, the current sense module used includes pedestal, as the matrix of wireline inspection sensor, and set on it
The Quick-clamped function of setting lid realization and circuit, also for the function that realization is easily installed, while in order to preferably to line
Road electric current is detected, and lower groove, and setting and the matched upper groove of lower groove on lid are arranged on pedestal, then exists
It is respectively provided with ferromagnetic silicon steel sheet in upper groove and lower groove, and winds two coils on it, is potential winding and current line respectively
Circle, then potential winding and the low power processor of pedestal lower part are attached, can by its acquisition induced voltage, come for
Low power processor provides energy source, and current coil can be detected circuit to obtain the operating condition of circuit, and
Setting ground connection identification module in its underpart guides direction, and the ADC module being arranged in pedestal to be shown for operation maintenance personnel
The electric signal detected can be converted to digital signal, it is ensured that the stability and accuracy of data transmission, and pass through wireless communication
Signal communication module carries out data interaction, and in order to ensure the stability combined with circuit, it is arranged on pedestal and is matched with lid
Locking module.
In addition, the monitoring backstage server used includes the router interconnected with current sense module wireless signal, it can
It realizes data exchange, and passes data to background server, data processing is carried out by it, it is aobvious that acquisition data are shown in simulation
Display screen so that operation maintenance personnel can intuitively see the state of existing line, then can be directly by corresponding current when there is alarm
Camera at sensing module is opened, and shows screen display in module, while will after operation maintenance personnel goes to scene
Data feedback is compared data to engineer station, by engineer station, it is ensured that the standard of display data on simulating display screen
True property, can also be arranged the projecting apparatus being connected with background server certainly, can be in training and learning, and student can not be by ground
Point limitation demonstrate.
In addition, use locking module include the threaded hole being arranged on lid, can by pedestal with threaded hole phase
The bolt of cooperation is locked, and in order to realize operability when working at height, operation ring is set in bolt lower end, to carry out
Ensure;And in order to realize the accuracy of positioning, locating module is set in pedestal, in order to realize the operability of the device,
Fiber optic communication spare interface of the setting for data exchange on pedestal, after setting up optical cable so as to distribution line, access uses, and adopts
Locating module is one or two kinds of combination of GPS geo-location system or triones navigation system, and the channel radio used
Letter module is 3G/4G communication modules;And the ground connection identification module used includes red light and green light, to be referred to for operation maintenance personnel
Draw, in addition to the phenomenon that avoiding circuit out of power, is arranged the reserve battery for being connected with low power processor in pedestal.
Description of the drawings
Fig. 1:The dimensional structure diagram of invention current sense module;
Fig. 2:The first side structure schematic diagram of invention current sense module;
Fig. 3:Second of side structure schematic diagram of invention current sense module;
Fig. 4:Invention distribution intelligent control primary system figure;
Fig. 5:The system schematic of invention;
Fig. 6:The schematic diagram of invention monitoring backstage server.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing 1-6, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this
A part of the embodiment of invention, instead of all the embodiments.Based on described the embodiment of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained, shall fall within the protection scope of the present invention.
Embodiment one
A kind of application method based on wireless communication technique distribution intelligent monitor system:
1)Using design, construction drawing, distribution primary system figure is drawn using graphics software on monitoring backstage server;
2)Circuit breaker trip control node and current sense module information are transmitted to background server in real time;
3)Monitoring backstage server calculates every circuit per phase adjacent current sensing module current differential in real time by cloud computing
Absolute value;
4)If it find that certain circuit phase current difference is more than definite value, monitoring backstage server module by radio communication, to
The breaker sends trip command, and breaker trips after being connected to trip command, refuses to jump if the breaker is problematic, can also set
Time, upper level tripping;
5)While monitoring module field observation, current sense module of the monitoring backstage server on circuit sends alarm and refers to
It enables, operation ground connection identification module is made to become red;
6)Monitoring backstage server sends handling failure instruction to equipment O&M, and be shown with data are stored in database, at the scene
Operation maintenance personnel can understand fault message in real time by the APP softwares of intelligent mobile terminal;
7)Data feedback to engineer station, is carried out comparing by operation maintenance personnel so that engineer station can carry out data real
Shi Xiuzheng;And after troubleshooting, all data are stored in database, achieves and preserves.
Based on wireless communication technique distribution intelligent monitor system, including multiple current senses for being arranged on transmission line of electricity 17
Module, multiple current sense modules and breaker nearby are wireless interconnected, and multiple current sense modules pass through wireless signal module
The 17 monitoring backstage servers 18 interconnected with multiple current sense module by signal, with 18 signal of monitoring backstage server
The cloud computing module 21 of interconnection, database 19, the intelligence interconnected by mobile network signals with the monitoring backstage server 18
Mobile terminal 20;
Each breaker is numbered, and by breaker in current sense module locating module latitude and longitude coordinates, number
According to being real-time transmitted to monitoring backstage server 18;
The current sense module includes pedestal 2, is arranged on pedestal 2 and a side and the hinged lid 1 of the pedestal 2, if
It sets on the pedestal 2 with 1 matched lower groove 9 of lid, is arranged matched with the lower groove 9 on the lid 1
It is respectively provided with ferromagnetic silicon steel sheet 7 in upper groove 6, the upper groove 6 and lower groove 9, the ferromagnetic silicon steel sheet 7 for being wrapped in upper groove powers on
Streamline circle 13, the potential winding 14 being wrapped on the ferromagnetic silicon steel sheet 7 of lower groove, the current coil 13 and potential winding 14 with
The low power processor 10 in 2 lower part of pedestal is arranged to be connected, the low power processor 10 is connected with ground connection identification module 5
It connects, the ADC module 11 that setting is interconnected for data conversion and with 10 signal of the low power processor in the pedestal 2 is used for
To be set in communicating wireless signals module 12 and the pedestal 2 that signal and monitoring backstage server interact for lid
The locking module that body 1 locks.
The locking module includes the threaded hole 8 being arranged on the lid, is arranged on pedestal 2 and is used for and the screw thread
8 matched bolt 3 of hole, and the operation ring 4 in 3 lower end of the bolt is set.
The locating module 15 for positioning and being interconnected with 10 signal of low power processor is additionally provided in the pedestal 2.
The locating module 15 includes for triones navigation system.
The communicating wireless signals module 17 is 3G/4G communication modules.
Wherein, for step 4)The middle primary current definite value used is I=200A, t=1.2S;Setting time is 1.5S.
The ground connection identification module 5 includes red light and green light, is dashed forward as ground short circuit failure using substation's residual voltage
Variable initiating element carries out cross-correlation using the zero-sequence current measured along line sensor.
In addition, the current sense module used in the present invention, be not only low-power consumption and also its being capable of automatic electricity getting, it is ensured that
The mechanism on the line use online hours, effectively avoid traditional cabinet type measuring device comprising distribution is whole
End such as FTU, DTU and TTU etc, mainly with voltage sensor, current sensor is secondary is connected, need larger installation to take up an area sky
Between, the infrastructure such as independent power supply and telecommunication equipment support that construction and installation are difficult and investment is larger.The electricity of the present invention
It flows sensing module itself and is not necessarily to external power supply, electric energy is obtained from power line by the induction power-supply circuit of itself, is passed through simultaneously
Ultralow Consumption is realized to the timesharing break-make control of each hardware module of sensor internal.Remove conventional electric power measuring apparatus power consumption from
Greatly, the requirement for using PT to take the independent power supplies such as electric power supply, external accumulator is needed, the throwing for building power-supply system is eliminated
The needs such as money, construction and maintenance.
Embodiment two
Its with embodiment one difference lies in:As shown in Figure 4:22- breakers, 24 I sections of PT, 25 I sections of arresters, 26 II sections of PT,
27 II sections of arresters, 28 I sections of busbares, 29- mothers, 30 II sections of busbares, 33- circuit interconnection switches.
1)Branch breaks down:
Such as break down at 1 circuit 1E and the 1F switch of branch of circuit 1, monitoring backstage server 18 passes through cloud computing module
21, since I section of busbar 28, start the absolute value for calculating the current sensor current differential at 1A, 1B, 1C switch along circuit 1,
Wherein 1C=1D+1E, 1A, 1B, 1C current differential absolute value very little are substantially zeroed, branch 1E-1F>>0, fault point is just in branch 1E
Between 1F, by wireless signal module 17 to branch switch 1E breakers trip signal, which occurs, for monitoring backstage server 18 carries out
Tripping, I section of busbar to 1D continue to run with, and reduce scope of power outage.
2)Line failure
Such as the 2C of circuit 2 is switched to breaking down at 2D switching circuits, monitoring backstage server 18 by cloud computing module 21,
Since I section of busbar 28, start the absolute value for calculating the current sensor current differential at 2A, 2B, 2C, 2D switch along circuit 2,
2A, 2B, 2C switching current absolute difference very little are substantially zeroed, 2C-2D>>0, fault point is just between 2C and 2D, after monitoring
Platform server 18 occurs trip signal to 2C breakers by wireless signal module 17 and trips.
3)Line looped network
Such as break down at 3C the and 3D switches of circuit 3, monitoring backstage server 18 is by cloud computing module 21, from I section of mother
Line 28 start, along circuit 3 start calculate 3A, 3B, 3C, 3D switch at current sensor current differential absolute value, 3A, 3B,
3C current differential absolute value very littles are substantially zeroed, 3C-3D>>0, just between 3C and 3D, monitoring backstage server 18 is logical for fault point
It crosses wireless signal module 17 to trip to 3C breakers generation trip signal, causes twolink to have a power failure after tripping, backstage is supervised
Control personnel can occur instruction to operation maintenance personnel and carry out the inspection of line.Circuit interconnection switch 32 is enabled to close after no problem, so only
There is a faulty section between 3C and 3D to have a power failure, substantially reduces scope of power outage.
The locating module 15 includes for GPS geo-location system.
Embodiment three
Its with embodiment two difference lies in:
Reserve battery 31 for being connected with low power processor 10 is set in the pedestal.
The fiber optic data communication interface 23 for data exchange is additionally provided in the pedestal 2.
Example IV
Its with embodiment three difference lies in:
The monitoring backstage server 18 includes the router 181 interconnected with current sense module wireless signal and the routing
181 signal of device interconnects background server 182, the simulating display screen 183 with the interconnection of 182 signal of the background server, and described
The engineer station 185 that background server 182 is connected, and with the matched active station of the background server 184.
The active station used in the embodiment is monitored maintenance for operation maintenance personnel, and tripping is generally automatic to jump, and circuit has
Automatic reclosing function automatic closing, unsuccessful reclosing or uses closing by hand without reclosing function, and can be anti-by data
Background server of feeding carries out data processing or storage.
Furthermore it is also possible to which high-definition camera is arranged in current sense module, the calling high definition is called to take the photograph when needed
As head carries out on-site supervision, it is easier to find failure cause.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those of ordinary skill in the art are in appended right
The protection domain that the various deformations or amendments that performing creative labour can be made still belong to this patent is not needed in the range of it is required that.