CN105469569B - Current information remote radio communication transmitting device and method based on distribution network line - Google Patents
Current information remote radio communication transmitting device and method based on distribution network line Download PDFInfo
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- CN105469569B CN105469569B CN201510853489.1A CN201510853489A CN105469569B CN 105469569 B CN105469569 B CN 105469569B CN 201510853489 A CN201510853489 A CN 201510853489A CN 105469569 B CN105469569 B CN 105469569B
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of current information remote radio communication transmitting device and method based on distribution network line, including shell and solar photovoltaic cell panel, the solar photovoltaic cell panel setting is on the housing；The enclosure interior is provided with charging circuit, battery, isolation DC/DC module, microcontroller, GPRS wireless communication module and Zigbee wireless communication module, the output end of the solar photovoltaic cell panel is electrically connected with the input terminal of charging circuit, the output end of the charging circuit is electrically connected with the input terminal of battery, the electric energy output end of the battery is electrically connected with the input terminal of isolation DC/DC module, the output end of the isolation DC/DC module respectively with microcontroller, the electrical connection of the power input of GPRS wireless communication module and Zigbee wireless communication module.The present invention can be such that the measurement accuracy of power distribution network current acquisition unit is improved, and furthermore do not needed external power supply as the remote radio communication transmitting device main electricity using the combination of solar photovoltaic cell panel and battery, reached energy-saving and environment-friendly effect.
Description
Technical field
The present invention relates to a kind of current detectings, transmitting device, believe more particularly, to a kind of electric current based on distribution network line
Cease remote radio communication transmitting device and method.
Background technique
Currently, the measurement of distribution network line electric current is typically only capable to measure in the leading-out terminal of route, and in route
Intermediate and its end, route each branch current measurement, due to lacking power supply, on route, installation measuring device is more
It is difficult, lack the current information of route can be transmitted to many factors such as the remote wireless communication device of substation's daemon software,
Allow to carry out these measure it is current or relatively difficult, do not find so far yet carry out distribution network line in and its each branch line
The current measuring device on road.Due to lack be suitable for distribution network line, distribution line branched line current detection means and
The communication equipment that distribution line current information is carried out to long range radio transmissions causes the tired of current distribution network line fault detection
Difficulty so that the detection of current distribution network line fault occur the route positioned inaccuracy, can not navigate to specific branched line,
The problems such as can not determining the specific position of fault, this makes an inspection tour for the line fault of current distribution network line and brings with investigation work
Inconvenience wastes patrol officer's a large amount of quality time.
Application number 201410461402.1, entitled Intelligent current collecting method and device based on wireless technology
Patent of invention, disclose it is a kind of using wireless communication technique carry out current data acquisition device, including on-site detecting device and
Reception device, on-site detecting device include power module, D.C mutual-inductor, current measurement chip, operational amplifier, monolithic
Machine, wireless communication module, single-chip microcontroller connect wireless communication module, and power module is respectively to current measurement chip, single-chip microcontroller, wireless
Communication module is powered, and current data is transmitted to the indoor computer of monitoring by wireless communication module by current data signal
On.Data are transmitted due to using infinite network, eliminate the trouble of wiring, still, the invention can only be in small-scale space
Interior realization wirelessly transmitting data cannot achieve remote data transmission and control, and modules also need external power supply
Power supply.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of electricity based on distribution network line
Stream information remote radio communication transmitting device and method, solving the prior art cannot achieve Long-range Data Transmission and needs
The problem of external power supply.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of current information remote radio communication transmitting device based on distribution network line, the electric current based on distribution network line
Information remote wireless communication transmissions device includes shell and solar photovoltaic cell panel, and the bar of distribution line is arranged in the shell
On tower, the solar photovoltaic cell panel setting is on the housing；The enclosure interior be provided with charging circuit, battery,
Isolation DC/DC module, microcontroller, GPRS wireless communication module and Zigbee wireless communication module, the solar energy
The output end of volt solar panel is electrically connected with the input terminal of charging circuit, the output end of the charging circuit and the input terminal of battery
Electrical connection, the electric energy output end of the battery are electrically connected with the input terminal of isolation DC/DC module, the isolation DC/DC
The output end of the module power input with microcontroller, GPRS wireless communication module and Zigbee wireless communication module respectively
Electrical connection, the signal output end of the microcontroller is electrically connected with the signal input part of Zigbee wireless communication module, described
The signal output end of microcontroller is electrically connected with the signal input part of GPRS wireless communication module.
Preferably, the microcontroller is logical by RS485 universal serial bus and Zigbee wireless communication module progress data
Letter.
Preferably, the microcontroller carries out data communication by RS485 universal serial bus and GPRS wireless communication module.
Preferably, the charging circuit is equipped with charge controlling chip, and the charge controlling chip uses CN3083 chip.
A kind of current information remote radio communication transmission method based on distribution network line, includes the following steps:
Current acquisition unit acquires the current value of distribution network line and branched line, after microprocessor processes, uses
ZIGBEE wireless communication module is sent to the current information remote radio communication transmitting device based on distribution network line；
Current information remote radio communication transmitting device based on distribution network line is sent to distribution after receiving current value
Cable road fault detection analysis backstage；
The communication instruction that the distribution network line fault received tests and analyzes backstage is transmitted to by GPRS wireless communication module
Current acquisition unit.
Preferably, the current value of the current acquisition unit acquisition distribution network line and branched line includes the following steps:
The cylindrical plunger of power module is placed along the planar horizontal vertical with a conducting wire, is wound with power supply on cylindrical plunger
Winding, power supply winding pass through the bridge rectifier filter circuit connecting with power supply winding and export constant DC voltage, are arc-shaped iron core
Current transformer, microprocessor, ZIGBEE wireless communication module power supply；
Arc-shaped iron core current transformer acquires the primary current signal on distribution network line conducting wire, and integrated circuit generates
The secondary voltage directly proportional to primary current；
Microprocessor obtains the current signal and voltage signal that arc-shaped iron core current transformer obtains, and exports to integrating circuit
Voltage signal carry out sampling processing, calculate the size and phase of its fundamental wave and harmonic signal.
Preferably, the current acquisition unit includes arc-shaped iron core current transformer, microprocessor, ZIGBEE wireless communication
Module and power module, the integrated circuit of arc-shaped iron core current transformer are connect with the microprocessor, the ZIGBEE
Wireless communication module connect microprocessor, the integrating circuit, microprocessor and ZIGBEE wireless communication module with the electricity
Source module connection；The arc-shaped iron core current transformer includes that arc-shaped iron core, secondary coil, integrating circuit, bracket and porcelain vase are exhausted
Edge, the secondary coil include measurement winding and power supply winding, and the measurement winding and power supply winding technique are in the arc
On iron core, the both ends of the measurement winding are connect with the integrating circuit, the both ends of the power supply winding and the integrating circuit
Connection, the arc-shaped iron core and integrating circuit are arranged in the bracket, and the bracket is arranged in the porcelain bottle insulators；
The porcelain bottle insulators bottom is provided with through-hole.
The beneficial effects of the present invention are:
1, the wireless communication between power distribution network current acquisition unit and remote back-office may be implemented in the present invention, and wireless communication is logical
The realization of GPRS wireless communication module is crossed, remote data communication may be implemented, the survey of power distribution network current acquisition unit can be made
Accuracy of measurement is improved.
2, the present invention is transmitted using the combination of small-sized solar photovoltaic battery panel and battery as the remote radio communication
Device main electricity, small-sized solar photovoltaic battery panel can convert electric energy for the solar energy on daytime and be stored in battery,
In case using at night with yin, rainy day, external power supply is not needed in this way, and there is energy-saving and environment-friendly effect.
3, there is charge controlling chip in charging circuit of the invention, it can be according to the current output capability of input voltage source
Adjust automatically charging current can utilize to greatest extent the electric current input capability of input voltage source, and can prevent to electric power storage
The overcharge in pond has ensured the safe and stable operation of battery.
4, The present invention reduces power needed for the remote data communication of power distribution network current acquisition unit and communication work amount,
Save the manufacturing cost of power distribution network current acquisition unit.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the circuit diagram of charging circuit of the present invention.
Fig. 3 is the structural schematic diagram of arc-shaped iron core current transformer of the present invention.
Fig. 4 is another structural schematic diagram of arc-shaped iron core current transformer of the present invention.
Fig. 5 is a kind of method flow of the current information remote radio communication transmission method based on distribution network line of the present invention
Figure.
Fig. 6 is the method flow diagram of current acquisition of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the present invention includes shell 1 and solar photovoltaic cell panel 2, solar photovoltaic cell panel 2 be can be rotated
Be set on shell 1, can according to installation site receive sunlight actual conditions carry out rotation adjusting.
Shell 1 be internally provided with charging circuit 3, battery 4, isolation DC/DC module 5, microcontroller 6, GPRS without
Line communication module 7 and Zigbee wireless communication module 8.Solar photovoltaic cell panel 2 is used as the remote radio communication transmitting device
Main electricity, the small-sized monocrystalline silicon photovoltaic battery panel of power selection 4W, for converting electric energy for the solar energy on daytime
It is stored in battery 4, in case being used at night with yin, rainy day.The electric energy output end and charging of small-sized monocrystalline silicon photovoltaic battery panel
The input terminal of circuit 3 connects, and the output end of charging circuit 3 is electrically connected with the input terminal of battery 4, and battery 4 selects two economize on electricitys
Pressure is 6V, the rechargeable lithium battery that power is 3W, which is used in series, the electric energy output end and isolation of battery 4
The input terminal of DC/DC module 5 is electrically connected；Isolation DC/DC module 5 realizes the electric isolution of battery 4 and electronic circuitry part, together
Shi Jinhang voltage transformation, the electricity of direct current supply needed for converting battery voltage to 8051 single-chip microcontrollers, GPRS wireless communication module 7
Pressure；Microcontroller 6 uses single-chip microcontroller, and single-chip microcontroller uses 8051 singlechip chips, and the rs 232 serial interface signal of 8051 singlechip chips is defeated
Outlet is communicated after the conversion of MAX485 integrated chip, through RS485 bus with Zigbee wireless communication module 8；
8051 singlechip chips also need to extend a serial ports output, by dedicated low-power consumption serial-port extension chip SP2538 come real
Existing, the rs 232 serial interface signal output end of extension is wirelessly communicated after the conversion of MAX485 integrated chip by RS485 bus and GPRS
Module 7 is communicated.
In the embodiment, shell 1 is made of the insulating materials of following component: 56-60 parts of Corvic, thermoplasticity
20-30 parts of elastomer, 5-8 parts of plasticizer, 0.1-0.5 parts of antioxidant, 2-3 parts of coupling agent, 10-15 parts of polyether-ether-ketone, glass
5-8 parts of fiber, 1-2 parts of carbon fiber.
Insulating materials of the invention: reusable, easy recycling, high heat resistance and good insulating, heat distortion temperature 100-105
DEG C, volume resistivity 5.8 × 1012Ω cm, impact strength (KJ/m2) 100-110.
Insulating materials preparation method: a), will to have weighed in 70-80 DEG C of drying box of raw material dry 3-5 according to the weight ratio small
When；B), each component is put into high-speed mixer and is mixed 3-5 minutes；C), by said mixture in mixer mixing 25-
30 minutes；D), said mixture is crushed in Material disintegrator uniformly, through double-screw extruding pelletizing.
The electrical schematic diagram of charging circuit 3 inside inventive shell 1 is as shown in Fig. 2, charging circuit 3 has charge control
Chip, charge controlling chip use CN3083 chip, which can adjust automatically according to the current output capability of input voltage source
Whole charging current can utilize to greatest extent the electric current input capability of input voltage source, and can prevent the mistake to battery 4
Charging, has ensured the safe and stable operation of battery 4.
The working principle of communications portion of the present invention are as follows:
ZIGBEE wireless communication module 8 is for realizing the two-way number between the present invention and distribution network line current acquisition unit
According to communication, the measurement current value of the three-phase current acquisition unit on distribution network line is received, the current value is by the electric current in each phase
Acquisition unit wirelessly sends over, while the communication for the remote back-office that GPRS wireless communication module 7 receives being referred to
Enable the current acquisition unit being transmitted in each phase；8051 single-chip microcontrollers are for realizing long-range GPRS wireless communication module 7 and ZIGBEE
The analysis and processing conversion work of bi-directional data between wireless communication module 8；GPRS wireless communication module 7 is for realizing this hair
It is bright to receive the long range wireless communication between processing software with back-end data that is being located at substation, by the module by power distribution network
The back-end data that the current information of current acquisition unit is communicated wirelessly to substation receives and processing software, meanwhile, it connects
The back-end data for receiving substation receives the command information sent with processing software, after which is handled by 8051 single-chip microcontrollers
It is transmitted in distribution network line current acquisition unit by ZIGBEE wireless communication module 8.
In one embodiment, 8051 single-chip microcontrollers and Zigbee wireless communication module 8 and GPRS wireless communication module 7 are logical
It crosses RS232 universal serial bus and carries out data communication.The rs 232 serial interface signal output end of 8051 singlechip chips passes through MAX232 integrated chip
Conversion after, communicated by RS232 bus with Zigbee wireless communication module 8；8051 singlechip chips also need to extend
One serial ports output, is realized by Intel8251 chip, realizes that extension is a kind of parallel by Intel8251 chip
Extended method；The rs 232 serial interface signal output end of extension after the conversion of MAX232 integrated chip, by RS232 bus and GPRS without
Line communication module 7 is communicated.
In one embodiment, as shown in figure 3, arc-shaped iron core current transformer includes arc-shaped iron core 1, secondary coil, product
Parallel circuit 5, bracket 4 and porcelain bottle insulators 7.Arc-shaped iron core 1 is the silicon steel material of high magnetic property, the angular range of central angle
It is 60 ° -180 °, the central angle of the arc-shaped iron core 1 of the present embodiment is 60 °.
Secondary coil includes measurement winding 2 and power supply winding 3, measures winding 2 and power supply winding 3 is wound on arc-shaped iron core 1
On, the both ends of measurement winding 2 are connect with the signal input part of integrating circuit 5, the both ends of power supply winding 3 and the electricity of integrating circuit 5
The connection of source input terminal.
Integrating circuit 5 is set to the bottom inside bracket 4, and integrating circuit includes rectification unit and filter unit, described whole
The output end of stream unit is connect with the input terminal of the filter unit.It is directly proportional to the differential of primary current to measure the output of winding 2
Induced electromotive force, the output of the induced electromotive force be reduced into the integrating circuit of integrating circuit 5 for primary current at
The output electromotive force of the voltage output of direct ratio, power supply winding 3 is also directly proportional to the differential of primary current, and electromotive force output is rear
Rectification unit and filter unit in continuous integrating circuit 5 rectified, filter and pressure stabilizing after obtain supply integrating circuit work
Stable voltage output, the output voltage signal of the measurement winding 2 after Integral Processing can directly drive measuring instrumentss
And other electric logging equipments.
Arc-shaped iron core 1 of the invention, secondary coil are mounted on the top inside bracket 4, and there are for secondary at the center of bracket 4
The output of secondary coil is introduced the bottom of bracket 4 by the perforation that coil is drawn, and in 4 bottom of bracket, there are installation integrating circuit 5
Space and screw hole, integrating circuit 5 is fixed on 4 bottom of bracket by bolt 8, bracket 4 is used as this arc-shaped iron core coil current
The skeleton of mutual inductor.
After the camber line iron core of above-mentioned current transformer, secondary coil, bracket 4, integrating circuit 5 are installed, place
Inside a hollow porcelain bottle insulators 7, the secondary output line of integrating circuit 5 is drawn by the through-hole 6 of 7 bottom of porcelain bottle insulators
Out.Bracket 4 is insulating support, and the installation for internal electronic part and current transformer is fixed, and insulation column housing is for protecting
Card electronic section and primary current conducting wire have enough insulation distances and creepage distance, while guaranteeing that electronic section will not be external
The damage such as daylight, raindrop, dust, while be easy to implement current collecting device on the line be installed on fixation.
When carrying out the current measurement of power distribution network using the present invention, it is only necessary to cut primary current conducting wire and arc-shaped iron core 1
Face is disposed vertically, and iron core is not directly contacted with conducting wire, but by porcelain bottle insulators 7 come with a conductive contact.Equipment is placed
After good, the secondary output line of integrating circuit 5 is connect with externally measured instrument, so that it may read the electric current in power distribution network.
Specific step is as follows for the present embodiment arc-shaped iron core current transformer production method:
Step 1): secondary coil is wound in arc-shaped iron core 1, and the both ends for measuring winding 2 and the signal of integrating circuit 5 are defeated
Enter end connection, the both ends of power supply winding 3 are connect with the power input of integrating circuit 5；
Step 2): camber line iron core and secondary coil are fixedly installed in the top of bracket 4, there are for mutual at the center of bracket 4
The perforation that sensor secondary coil is drawn, there are the space of installation integrating circuit 5 and threaded holes for 4 bottom of bracket, by integrating circuit 5
The bottom of bracket 4 is fixed on by bolt 8；
Step 3): it after camber line iron core, secondary coil, bracket 4, integrating circuit 5 are installed, places it in one
Inside empty porcelain bottle insulators 7, a through-hole 6 is opened in 7 bottom of porcelain bottle insulators, the secondary output line of integrating circuit is passed through into branch
The aperture of 7 bottom of perforation and porcelain bottle insulators at the center of frame 4 is drawn；
Step 4): above-mentioned steps 1), after step 2) and step 3) complete, that is, can be made into complete 1 coil of arc-shaped iron core
Current transformer.
In one embodiment, as shown in figure 4, integrating circuit 5 is cast in the bottom of bracket 4 by poured with epoxy resin layer 9
Portion.The section of arc-shaped iron core is round or rectangle.
Specific step is as follows for the present embodiment arc-shaped iron core current transformer production method:
Step 1): secondary coil is wound in arc-shaped iron core 1, and the both ends for measuring winding 2 and the signal of integrating circuit 5 are defeated
Enter end connection, the both ends of power supply winding 3 are connect with the power input of integrating circuit 5；
Step 2): camber line iron core and secondary coil are fixedly installed in the top of bracket 4, there are for mutual at the center of bracket 4
Integrating circuit 5 is passed through epoxy there are the space of installation integrating circuit 5 by the perforation that sensor secondary coil is drawn, 4 bottom of bracket
Resin-cast layer 9 is cast in the bottom of bracket 4；
Step 3): it after camber line iron core, secondary coil, bracket 4, integrating circuit 5 are installed, places it in one
Inside empty porcelain bottle insulators 7, a through-hole 6 is opened in 7 bottom of porcelain bottle insulators, the secondary output line of integrating circuit is passed through into branch
The aperture of 7 bottom of perforation and porcelain bottle insulators at the center of frame 4 is drawn；
Step 4): above-mentioned steps 1), after step 2) and step 3) complete, that is, can be made into complete 1 coil of arc-shaped iron core
Current transformer.
Arc-shaped iron core current transformer is in contact by external insulating supporting skeleton with primary current conducting wire；Power unit
The cylindrical plunger being made into including use by amorphous alloy material, power supply winding and current rectifying and wave filtering circuit group on cylindrical plunger
At cylindrical plunger is placed along the planar horizontal vertical with a conducting wire, is wound with power supply winding on iron core, has behind power supply winding
Bridge rectifier filter circuit, exports constant DC voltage, and power unit is also by external insulating supporting skeleton and primary
Ampere wires are in contact.Integrating circuit uses active integrating circuit, and the amplifier chip power supply of the integrating circuit comes from power supply
The voltage signal of part, the measurement winding output on arc-shaped iron core current transformer becomes and one after the integrating circuit
The directly proportional voltage signal of secondary line electric current.
Microprocessor portion is constituted using ARM7 chip and its peripheral circuit, in ARM7 chip containing multi-channel a/d converter,
FLASHROM program storage, RAM etc. may be implemented the sampling processing and analysis of the voltage signal exported to integrating circuit, obtain
To the information such as the size of a line current and phase, while being able to carry out some definite values processing of some such as mutual inductor ratios
And store function.ZIGBEE wireless communication module uses GPRS communication module, which can pass through the serial number of ARM7 chip
According to communication port, background communication data processing system is sent by the current information measured, is convenient for background communication data processing
Software is shown and is handled, while being given the control signal that background communication system software is sent to ARM7 and being carried out at data
Reason, to realize the bidirectional data communication of line current acquisition device Yu remote back-office system.
The various pieces of above-mentioned signal acquisition unit also need to carry out the installation of various components, consolidate in actual equipment
Fixed and whole equipment exterior insulation protection, therefore also need to configure one and consolidate the insulation that installation is fixed in these modules
Determine mounting bracket, while also needing the insulator housing an of column support type, insulation mounting bracket is cast using epoxy resin
Supporting structure, the insulator housing of column support type can be using the insulation of silicon rubber, epoxy resin or porcelain bottle insulators material outside
Set, the insulating coating can use insulation column housing, for guaranteeing that electronic section and primary current conducting wire have enough insulation
Distance and creepage distance, while guaranteeing that electronic section will not be easy to implement simultaneously by the damage such as external daylight, raindrop, dust
Current collecting device on the line be installed on fixation.
In one embodiment, arc-shaped iron core uses the silicon steel material of high magnetic property.Silicon steel material by following component and
Weight percentage composition: C:0.005-0.008%, Si:3-3.5%, Mn:0.1-0.2%, Cr:0.05-0.07%, Se:
0.02%~0.05%, P:0.02-0.03%, S:0.1-0.2%, Al:3-5%, Ni:0.04-0.06%, Cu:1-2% are remaining
Amount is Fe and inevitable impurity.
In the embodiment, magnetic conductivity and resistance rate is high, and magnetizability is good, and internal stress is good, and Current compliance is good, ingredient is simple,
It is at low cost.
Silicon steel material is made of following component and weight percentage as a preferred method: C:0.007%, Si:
3.3%, Mn:0.1%, Cr:0.06%, Se:0.04%, P:0.03%, S:0.1%, Al:4%, Ni:0.05%, Cu:1%,
Surplus is Fe and inevitable impurity.
In one embodiment, power module includes using the cylindrical plunger made of amorphous alloy material, cylindrical plunger
On power supply winding and current rectifying and wave filtering circuit composition.The amorphous alloy material includes the component of following weight percentage:
Si:8-10%；B:1-2%；P:0.005-0.008%；C:2-3%；Mn:1-2%；Mg:0.5-0.8%, Ti:0.5-0.8%,
Ge:0.2-0.5%, Ag0.05-0.1%, surplus are iron.
The preparation process of amorphous alloy material are as follows: the weighed raw material centainly matched is put into vacuum smelting furnace, is adjusted and is taken out
Vacuum degree is to 5 × 10-3Pa is then charged with 0.05MPa argon gas protective gas；Master alloy is made in furnace cooling after melting uniformly.With
It sprays into or pours into after master alloy is put into induction furnace remelting afterwards and amorphous alloy bar is made in copper mold.Amorphous alloy material tool
Have that amorphous formation ability is strong, saturation induction density is high, reach 1.8T, it is low in cost the features such as.
As shown in figure 5, a kind of distribution network line fault detection method, includes the following steps:
Step S501, current acquisition unit acquires the current value of distribution network line and branched line, through microprocessor processes
Afterwards, the current information remote radio communication transmitting device based on distribution network line is sent to using ZIGBEE wireless communication module；
Step S502, the current information remote radio communication transmitting device based on distribution network line are sent out after receiving current value
It gives distribution network line fault and tests and analyzes backstage；
Step S503, GPRS wireless communication module refers to the communication that the distribution network line fault received tests and analyzes backstage
Order is transmitted to current acquisition unit.
In one embodiment, as shown in fig. 6, the electricity of current acquisition unit acquisition distribution network line and branched line
Flow valuve includes the following steps:
The cylindrical plunger of step S601, power module are placed along the planar horizontal vertical with a conducting wire, on cylindrical plunger
It is wound with power supply winding, power supply winding passes through the bridge rectifier filter circuit connecting with power supply winding and exports constant DC voltage,
For arc-shaped iron core current transformer, microprocessor, ZIGBEE wireless communication module power supply；
Step S602, arc-shaped iron core current transformer acquire the primary current signal on distribution network line conducting wire, and through product
Parallel circuit generates the secondary voltage directly proportional to primary current；
Step S603, microprocessor obtains the current signal and voltage signal that arc-shaped iron core current transformer obtains, to product
The voltage signal of parallel circuit output carries out sampling processing, calculates the size and phase of its fundamental wave and harmonic signal.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (5)
1. a kind of current information remote radio communication transmission method based on distribution network line, it is characterised in that:
Current acquisition unit acquires the current value of distribution network line and branched line, after microprocessor processes, using ZIGBEE
Wireless communication module is sent to the current information remote radio communication transmitting device based on distribution network line；
Current information remote radio communication transmitting device based on distribution network line is sent to distribution cable after receiving current value
Road fault detection analysis backstage；
The communication instruction that the distribution network line fault received tests and analyzes backstage is transmitted to electric current by GPRS wireless communication module
Acquisition unit；
The current acquisition unit includes arc-shaped iron core current transformer, microprocessor, ZIGBEE wireless communication module and power supply
Module, the integrated circuit of arc-shaped iron core current transformer are connect with the microprocessor, the ZIGBEE radio communication mold
Block connects microprocessor, and the integrating circuit, microprocessor and ZIGBEE wireless communication module are connect with the power module；
The arc-shaped iron core current transformer includes arc-shaped iron core, secondary coil, integrating circuit, bracket and porcelain bottle insulators, and described two
Secondary coil includes that measurement winding and power supply winding, the measurement winding and power supply winding technique are described in the arc-shaped iron core
The both ends of measurement winding are connect with the integrating circuit, and the both ends of the power supply winding are connect with the integrating circuit, the arc
Shape iron core and integrating circuit are arranged in the bracket, and the bracket is arranged in the porcelain bottle insulators；The porcelain vase is exhausted
Edge bottom is provided with through-hole；
The remote radio communication transmission method includes a kind of current information remote radio communication transmission based on distribution network line
Device, the current information remote radio communication transmitting device based on distribution network line include shell and solar photovoltaic cell panel,
The shell is arranged on the shaft tower of distribution line, and the solar photovoltaic cell panel setting is on the housing；The shell
It is internally provided with charging circuit, battery, isolation DC/DC module, microcontroller, GPRS wireless communication module and Zigbee
Wireless communication module, the output end of the solar photovoltaic cell panel are electrically connected with the input terminal of charging circuit, the charging electricity
The output end on road is electrically connected with the input terminal of battery, and the electric energy output end of the battery is defeated with isolation DC/DC module
Enter end electrical connection, the output end of the isolation DC/DC module respectively with microcontroller, GPRS wireless communication module and
The power input of Zigbee wireless communication module is electrically connected, the signal output end and Zigbee channel radio of the microcontroller
Believe the signal input part electrical connection of module, the signal of the signal output end and GPRS wireless communication module of the microcontroller is defeated
Enter end electrical connection；
The shell is made of the insulating materials of following component: 56-60 parts of Corvic, thermoplastic elastomer (TPE) 20-30
Part, 5-8 parts of plasticizer, 0.1-0.5 parts of antioxidant, 2-3 parts of coupling agent, 10-15 parts of polyether-ether-ketone, 5-8 parts of glass fibre, carbon
1-2 parts of fiber；
The preparation method of the insulating materials include the following steps: a), 70-80 DEG C of drying of raw material will have been weighed according to the weight ratio
It is 3-5 hours dry in case；
B), each component is put into high-speed mixer and is mixed 3-5 minutes；
C), by said mixture mixing 25-30 minutes in mixer；
D), said mixture is crushed in Material disintegrator uniformly, through double-screw extruding pelletizing.
2. the current information remote radio communication transmission method according to claim 1 based on distribution network line, feature
Be: the microcontroller carries out data communication by RS485 universal serial bus and Zigbee wireless communication module.
3. the current information remote radio communication transmission method according to claim 1 based on distribution network line, feature
Be: the microcontroller carries out data communication by RS485 universal serial bus and GPRS wireless communication module.
4. the current information remote radio communication transmission side according to claim 1-3 based on distribution network line
Method, it is characterised in that: the charging circuit is equipped with charge controlling chip, and the charge controlling chip uses CN3083 chip.
5. a kind of current information remote radio communication transmission method based on distribution network line according to claim 1,
It is characterized in that:
The current value of the current acquisition unit acquisition distribution network line and branched line includes the following steps:
The cylindrical plunger of power module is placed along the planar horizontal vertical with a conducting wire, be wound with along cylindrical plunger power supply around
Group, power supply winding pass through the bridge rectifier filter circuit connecting with power supply winding and export constant DC voltage, are arc-shaped iron core electricity
Current transformer, microprocessor, ZIGBEE wireless communication module power supply；
Arc-shaped iron core current transformer acquires the primary current signal on distribution network line conducting wire, and integrated circuit generates and one
The directly proportional secondary voltage of primary current；
Microprocessor obtains the current signal and voltage signal that arc-shaped iron core current transformer obtains, to the electricity of integrating circuit output
It presses signal to carry out sampling processing, calculates the size and phase of its fundamental wave and harmonic signal.
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| CN106683382A (en) * | 2017-01-21 | 2017-05-17 | 广东工业大学 | Zigbee wireless transmission conversion device based on RS485 interface |
| CN110389265A (en) * | 2019-07-12 | 2019-10-29 | 湖南沛科交通工程技术股份有限公司 | A kind of LoRa Wireless data acquisition unit test macro and its test method |
| DE102020212901B4 (en) * | 2019-10-14 | 2023-03-23 | Lg Electronics Inc. | WIRELESS POWER SENSOR |
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