CN208224353U - A kind of high direct voltage intelligent early-warning device - Google Patents

A kind of high direct voltage intelligent early-warning device Download PDF

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Publication number
CN208224353U
CN208224353U CN201721876922.4U CN201721876922U CN208224353U CN 208224353 U CN208224353 U CN 208224353U CN 201721876922 U CN201721876922 U CN 201721876922U CN 208224353 U CN208224353 U CN 208224353U
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China
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module
warning
signal
prior
warning device
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景国明
费跃军
刘宏达
王岩
费琳翔
罗杰
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NANJING WENDAO AUTOMATION SYSTEM CO Ltd
State Grid Corp of China SGCC
Henan Power Transmission and Transformation Construction Co Ltd
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NANJING WENDAO AUTOMATION SYSTEM CO Ltd
State Grid Corp of China SGCC
Henan Power Transmission and Transformation Construction Co Ltd
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Abstract

The utility model proposes a kind of high direct voltage intelligent early-warning devices, comprising: shell, magnet and circuit board;Magnet is arranged on the medial surface of outer casing bottom;DC electric field warning module, GPS warning module and wireless communication module are provided on circuit board, DC electric field warning module includes controller, and wireless communication module includes antenna;The controller includes sequentially connected signal acquisition module, signal processing module, signal amplifier, signal analysis module and warning module;Prior-warning device is fixed temporarily by magnet absorption and is mounted on big machinery, easy to operate simple.Prior-warning device detects DC high-voltage field signal by DC electric field warning module and issues pre-warning signal alarm, and prior-warning device passes through the positioning early warning of GPS warning module simultaneously.Module transmits pre-warning signal to prior-warning device outward by wireless communication.The utility model proposes prior-warning device can be fixedly mounted on big machinery, to high direct voltage real-time early warning, effectively avoid the generation of man-machine accident.

Description

A kind of high direct voltage intelligent early-warning device
Technical field
The utility model relates to high direct voltage transmission fields, and in particular to high direct voltage early warning.
Background technique
It is distributed due to China energy place of production and demand very unbalanced, coal resources are concentrated mainly on the Northwest, water Power resource is largely focused on western part, and the user of mass energy is needed to concentrate on China coast and middle part, this national conditions The conveying to remote large capacity electric energy is needed, direct current transportation be able to play its advantage.HVDC transmission system has because of it At a distance, the ability of supplying electric power of large capacity, and have the characteristics that flexible adjustment, power loss is low and obtains the extensive pass of people Note.
As global maximum 800,000 volts of high pressures of DC transmission engineering put into operation, ± 800KV, more than 2000 kms of overall length, Single back line conveying capacity reaches 5,000,000 kilowatts, indicates and formally puts into commercial operation, Chinese extra-high voltage remote conveying power technology It is ripe day by day, but the coherent detection source of early warning of high direct voltage is substantially blank at present at present, current only test equipment Can not be commercial or the function that scene uses early warning not had by also only resting on the experimental stage, which should can be installed to Operation Van It is upper or hand-held, early warning is carried out when working truck or handheld device reach risk distance close to high direct voltage route, it is desirable that behaviour Make simplicity, reliably, the intelligent terminal that developing direction from now on should facilitate installation and use in miniaturization, in addition to exploitation is adapted to greatly The high direct voltage early warning of development operation personnel's personal protection is also needed intelligently to set outside the high direct voltage prior-warning device of type working truck It is standby.
A kind of isolated DC high-voltage detecting method and detection circuit are disclosed in 102749501 B of patent document CN, are adopted With resistor voltage divider circuit, photoelectrical coupler and the signal conditioning circuit composition isolated DC height improved detection signal Press detection circuit.The utility model can both can guarantee that high and low pressure side was good on the basis of guaranteeing that DC high voltage reliably detects Good electrical isolation performance, and the complexity of detection circuit can be reduced, to save production cost.But detection device is more multiple It is miscellaneous, need using photoelectric coupling its, and detection accuracy is not high enough.
A kind of alternating current-direct current high voltage testing device, including processor, electrical verification are disclosed in 105137157 A of patent document CN Unit, voltage class judging unit, the alternating current for the probe of charge inducing and for detecting high-tension apparatus magnetic field judge single Member;Alternating current-direct current high voltage testing device provided by the utility model can both examine exchange, can also examine direct current, be suitable for existing Alternating current-direct current high-tension apparatus and novel super high voltage direct current electricity transmission equipment, and while whether detection device charges, may be used also With the voltage class of detection device, be particularly suitable for Devices to test voltage class it is unknown when the case where, can be widely applied to The power equipment or cable of all voltage class, the utility model applicability are extremely strong, safe, easy to carry.But device master It is used to detect AC and DC, detection accuracy is lower.
The country is not directly used in the high direct voltage source of early warning on high direct voltage line project vehicle, present equipment at present Using extremely complex and can not be installed on big machinery, it is not able to satisfy actual needs.It can be used for direct current height in existing equipment The equipment for pressing detection is less, and volume is big, operating difficulties, needs scene ground connection;Poor repeatability, frequent test data are inconsistent; Power consumption height cannot use for a long time;Mostly hand-held uses, and can not be mounted to machine.And in the prior art not over GPS Positioning carrys out the high direct voltage prior-warning device of early warning.
Utility model content
Based on above background, for various problems existing for current high direct voltage early warning field, the utility model proposes A kind of high direct voltage non-contact prior-warning device, comprising: shell, magnet and circuit board;The inside of outer casing bottom is arranged in magnet On face;Circuit board is fixed to be provided with DC electric field warning module, GPS warning module and communication mould inside the housing, on circuit board Block, DC electric field warning module include controller, and the controller includes sequentially connected signal acquisition module, signal processing mould Block, signal amplifier, signal analysis module and alarm module;The DC electric field warning module detects DC high-voltage field signal And alarm is issued warning signal, the GPS warning module passes through positioning early warning, and power module is arranged on the circuit board, described Power module includes dual path type for source module and expansion module, and the communication module includes that remote transmission module and local data are adopted Collect module, the local data acquisition module includes jtag interface and system bus, and the remote transmission module includes LTE communication Component and fiber optic communication unit.
Further, the signal acquisition module includes electric-field sensor, and the signal processing module includes rectifying and wave-filtering Circuit, the signal amplifier include the imported OTL amplifying circuit in front end, the signal analysis module include dsp chip and Data comparator, the data buffer connecting with the dsp chip store alarming value in the dsp chip, and the data compare Device in data buffer collection result and alarming value be compared, the alarm module include and the dsp chip export The acoustic-optic alarm of pin connection.
Further, the prior-warning device is adsorbed on big machinery.
Further, the controller uses dedicated asic chip.
Further, the GPS warning module includes GPS and Beidou.
Further, the bent rotation of the antenna.
Further, the acoustic-optic alarm includes loudspeaker and LED light.
The utility model has the following beneficial effects: proposing a kind of high direct voltage electric power device intelligence prior-warning device, Ke Yian It is attached on big machinery, it is easy to use and reliable, so that the simple polygamy of whole system reduces, may be implemented pre- to direct current generating positive and negative voltage Alert, the interim installation of method that magnet can also be used in device is very convenient, can play to construction below high direct voltage route Mechanical early warning function, can be to avoid the generation of man-machine accident.GPS warning module uses dual-mode working mode, supports simultaneously GPS and Beidou automatically switch, reliable and stable.What prior-warning device can be convenient is installed on heavy mechanical equipment, easy to disassemble. Prior-warning device can also be improved the precision of high direct voltage detection positioning early warning, be stablized by GPS warning module auxiliary positioning early warning Reliably.The present apparatus is low in energy consumption, extends using the time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model prior-warning device;
Fig. 2 is the structural schematic diagram of the utility model circuit board;
Fig. 3 is the structural schematic diagram of the utility model prior-warning device controller.
Fig. 4 is the circuit structure diagram of the utility model prior-warning device controller signals amplifier.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
The utility model provides a kind of high direct voltage intelligent early-warning device, and prior-warning device is mounted on the big machinery of work It in equipment, is installed by fixed forms such as screws, installation can also be fixed temporarily in such a way that magnet adsorbs.Outside prior-warning device Magnet is installed, the interim absorption for prior-warning device, which is installed, to be fixed on shell.
As shown in Figure 1, being the structural schematic diagram of prior-warning device, as shown in Figure 1, being the structural schematic diagram of prior-warning device, 1 is Prior-warning device, 2 be shell, and 3 be antenna;Prior-warning device includes shell, magnet and circuit board, and magnet is arranged in outer casing bottom On side, for prior-warning device to be easily adsorbed on to big machinery device, big machinery is usually metal, mainly iron Matter, it is easy for installation using magnet, it is easy to disassemble, it is simple and easy.
Circuit board is fixed on the inside of shell, and DC electric field warning module, GPS warning module are provided on circuit board and is led to Believe module;As shown in Figure 2,5 be communication module, and 6 be DC electric field warning module, and 7 be GPS warning module;DC electric field is pre- Alert module includes controller, and communication module includes antenna.Controller uses dedicated asic chip, is illustrated in figure 3 controller Structural schematic diagram.Controller includes sequentially connected signal acquisition module, signal processing module, signal amplifier, signal analysis Module and alarm module.When prior-warning device works: signal acquisition module acquires DC high-voltage field signal;By signal processing mould Block processing is sent into DC high-voltage field signal analysis module later, works as electric-field strength later using signal amplifier amplified signal When degree is greater than predetermined value, then pre-warning signal is triggered, alarm module is started to work.According to the common working environment of big machinery, example Such as the field that spaciousness is dry, different electric field strength predetermined values is arranged around moist marshland etc. in mountain environment.This implementation In example by taking outdoor field as an example, setting electric field strength predetermined value is 4kv/m.When the electric field intensity value that detection obtains is greater than 4kv/ When m, the analysis module internal circuit of controller issues warning signal alarm module, and acoustic-optic alarm includes loudspeaker And LED light, after receiving pre-warning signal, alarm module makes a sound and visual alarm;Meanwhile controller can pass through communication Pre-warning signal is sent to external smart terminal by module.
Each composition structure division of controller is described in detail below.
Electric-field sensor can use the board-like electric-field sensor of parallel metal, for acquiring DC high-voltage field signal, this It is to generate the principle of surface induction charge in the electric field based on metal to be designed, sensing module is by the induced electricity of metal surface Lotus is converted into current signal.
Due to during charge inducing is converted current signal by electric-field sensor, will receive a large amount of clutter or The interference of industrial frequency noise is handled acquisition signal so needing signal processing module, and signal processing module includes rectification Filter circuit, including low-pass filter shunt capacitance interconnected.For high frequency spurs, the incoming end of current rectifying and wave filtering circuit is set Bandpass filter is set low, and for low-frequency noise, it is directly bypassed with bulky capacitor, guarantees the accuracy of signal, low-pass filtering Device and shunt capacitance are all more universal well-known techniques, so details are not described herein.
Signal amplifier is an important part in controller, due to signal acquisition module signal collected It is smaller that there are energy, the shortcomings that decay, so being put before being compared processing to its signal analysis module Big processing, but due to impedance operator, if being directly connected to amplification coupling circuit, as signal is too small, will soon be declined It cuts.It is gone on smoothly for that purpose it is necessary to amplify small signal using specific signal amplifier to make entirely to communicate comparison procedure.
According to the actual situation, the technology of signal amplifier mainly realizes following aspect function: there is sufficiently large output power, Guarantee signal transmitted in coupled system and circuit in normal transmission;It is required that the rated load impedance of signal amplifier with couple electricity Road impedance matching;Since load variations are bigger, it is desirable that power amplifier has strong carrying load ability;It is required that signal amplifier works Stablize, reliable performance;The characteristics of according to typical OTL circuit, the experimental circuit for building signal amplifier is as shown in Figure 4.The circuit In, front end is voltage amplifier, and for OTL circuit by front end input signal, rear end is output signal.
In the dsp chip of signal entering signal analysis module by amplification, and number connected to it is called by dsp chip According to comparator, by data comparator in data buffer collection result and dsp chip in the alarming value that is stored carry out Compare, if reaching alarm criteria, high level signal is just exported by the output pin of dsp chip, thus triggering and output pin The acoustic-optic alarm of connection causes alarm, and acoustic-optic alarm includes loudspeaker and LED light, and the LED light includes LED high frequency Warning lamp, the loudspeaker include buzzer siren.
It is noted that the present invention is in order to handle the accuracys of data, it is slow as data using technical grade ECC buffer Storage, this is mainly due to electric devices to need long-term continual operation, and caching is one of the ost important components in system, it is The bridge linked up with controller.The operation of all programs all carries out in the buffer in computer, therefore the property cached Can influence to computer it is very big.Caching is also used to temporarily store the operational data in controller simultaneously.As long as computer exists In operation, controller will be transferred to the data for needing operation in caching and carry out operation, and controller again will knot after the completion of operation Fruit sends out, and the operation of caching also determines the stable operation of computer.And the high-speed read-write of normal cache unavoidably goes out The problem of existing data and program malfunction, ECC is cached with effect and error correction, to guarantee the fault-tolerance of device, ensure that Device has powerful self-recovery ability when breaking down.Device more fully ensures from error correction and having stably obtained, It can guarantee that system is stablized in this way, it is normal to run, avoid the problems such as many corrupt data programs crash.
Prior-warning device is positioned simultaneously by GPS warning module come early warning.GPS warning module is responsible for equipment positioning function, is The supplemental functionality of high direct voltage early warning.Device carries out data exchange by wireless communication for GPS warning module and background system. The location information of prior-warning device is sent to background system by GPS warning module in real time, and background control center, which is stored with, is decorated with alarm The electronic map in region, when prior-warning device enters in the alarm region of map, background system by wireless communication send out by system Prior-warning device is given, backstage personnel can also intervene work mechanical or that monitoring is mechanical.To guarantee reliable location, GPS early warning mould Block uses dual-mode working mode, while supporting GPS and Beidou, automatically switches, reliable and stable.GPS warning module uses two kinds of sides Formula passes data back backstage, first is that backstage is passed back by GPRS module, the other is be connected by Bluetooth function with background system, Data and backstage are swapped by the wireless channel of mobile phone.GPS is widely used it in each field, the utility model Applied to high direct voltage electric power equipment non-contact intelligent early warning system so that this system have it is straight in addition to DC electric field early warning Flow early-warning for high pressure function.GPS data is all common before transmission is upper to be transmitted with GPRS function, and there are many inconvenient for this mode Place, power consumption is big, needs SIM card, and the problem also paid dues etc., the utility model is counted using Bluetooth wireless communication mode Become simple and convenient according to transmission, and GPS uses bimodal manner, overcoming equipment can not position after some regions are interfered The problem of.
The power module of the present apparatus includes dual path type for source module and expansion module, and there are two power supplys for source module for dual path type Input source, one is alternating current 220V AC, the other is the deposit DC being composed of four section rechargeable lithium batteries.In the party In the conventional operating mode of case, the three-phase four-wire power that 220VAC is used is connected to after device, and passes through a three-phase Three-phase 220V AC, is converted to+the 12V and+5V of direct current by AC-DC module, and the power-supply system of whole device is all straight by the two Stream power supply lays in DC as the spare supplement to input AC source, makes up because of data tomography problem brought by AC dump, expands Opening up module includes induction energy fetching module and the charging capacitor connecting with induction energy fetching module, photovoltaic charged plate, expansion module master It is responsible for deposit DC charging, temporary source can also be served as under special circumstances, by induction energy fetching module directly from existing The cable of field takes electricity, and gives supercapacitor to charge, while by external photovoltaic panel as spare taking energy unit, also gives super electricity Condenser charge, power supply buffer pool of the supercapacitor as device, for deposit DC charging, meanwhile, output also access device Power bus is device temporary power in special circumstances.
The communication module of the utility model includes remote transmission module and local data acquisition module, and local data acquires mould Block includes jtag interface and system bus, and remote transmission module includes LTE communication component and fiber optic communication unit, and concrete function is not It repeats again.In actual use, communication extension module, including multi-channel network data-interface and multichannel can also be arranged in communication module I/O interface.The access of all kinds of IED, information subsystem may be implemented in multi-channel network data-interface, and realizes and upload and connect with information Receive the control command in a distant place.The module has Ethernet RJ-45, RS-232, RS-485 physical interface, realizes common external equipment Communication method information access.The multichannel I/O interface intelligent I/O module design changeable using energy flexible adaptation I/O port number, leads to Cross can spread modular manner, I/O number of modules, each I/O module insertion dress are determined according to the practical I/O quantity in source net lotus end It postpones, sends identity information automatically, by integrated decision-making unit by configuring online recognition.
Embodiment described above describes more specific and detailed, and but it cannot be understood as to the utility model patent The limitation of range.It should be pointed out that for those of ordinary skill in the art, not departing from the utility model design Under the premise of, various modifications and improvements can be made, and these are all within the protection scope of the present invention.Therefore, this is practical new The scope of protection shall be subject to the appended claims for type patent.

Claims (7)

1. a kind of high direct voltage intelligent early-warning device, comprising: shell, magnet and circuit board;Magnet is arranged in outer casing bottom On side;Circuit board fixation is provided with DC electric field warning module, GPS warning module and communication inside the housing, on circuit board Module, DC electric field warning module include controller, and the controller includes sequentially connected signal acquisition module, signal processing Module, signal amplifier, signal analysis module and alarm module;The DC electric field warning module detection DC high voltage electric field letter Number and issue warning signal alarm, power module is arranged on the circuit board, institute by positioning early warning in the GPS warning module Stating power module includes dual path type for source module and expansion module, and the communication module includes remote transmission module and local data Acquisition module, the local data acquisition module include jtag interface and system bus, and the remote transmission module includes LTE logical Believe component and fiber optic communication unit.
2. prior-warning device according to claim 1, which is characterized in that the signal acquisition module includes electric-field sensor, The signal processing module includes current rectifying and wave filtering circuit, and the signal amplifier includes the imported OTL amplifying circuit in front end, described Signal analysis module includes dsp chip and the data comparator connecting with the dsp chip, data buffer, the DSP core Store alarming value in piece, the data comparator in data buffer collection result and alarming value be compared, the report Alert module includes the acoustic-optic alarm connecting with the dsp chip output pin.
3. prior-warning device according to claim 1, which is characterized in that the prior-warning device is adsorbed on big machinery.
4. prior-warning device according to claim 1, which is characterized in that the controller uses dedicated asic chip.
5. prior-warning device according to claim 1, which is characterized in that the GPS warning module includes that GPS and Beidou are fixed Position.
6. prior-warning device according to claim 1, which is characterized in that communication module includes antenna, and the antenna is bent Rotation.
7. prior-warning device according to claim 2, which is characterized in that the acoustic-optic alarm includes loudspeaker and LED Lamp.
CN201721876922.4U 2017-12-28 2017-12-28 A kind of high direct voltage intelligent early-warning device Active CN208224353U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111880016A (en) * 2020-08-17 2020-11-03 无锡吉兴汽车声学部件科技有限公司 Non-contact electrostatic strength detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111880016A (en) * 2020-08-17 2020-11-03 无锡吉兴汽车声学部件科技有限公司 Non-contact electrostatic strength detection system
CN111880016B (en) * 2020-08-17 2023-05-12 无锡吉兴汽车声学部件科技有限公司 Non-contact electrostatic strength detection system

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