A kind of shelf depreciation typical case interference simulation device
Technical field
This utility model belongs to gas-insulated cubicle switch equipment(GIS), the high-tension electricity apparatus local discharge such as transformator
On-line monitoring technique field, and in particular to a kind of imitating substation typical case's electromagnetic interference and then office of the realization to partial discharge monitoring
The typical interference simulation device of portion's electric discharge, for carrying out the examination of scientific quantification to the interference free performance of high-tension electricity equipment.
Background technology
Shelf depreciation on-line checking and live detection are that the high-tension electricity such as GIS equipment implements repair based on condition of component, ensures its safety
The important technical of reliability operation, nowadays in China's electrical network large-scale popularization application.As on-line monitoring and band are put in office
Electric detection means also gradually manifests in the live application of substation operation, key technology problems.It is existing office to report by mistake, fail to report
The universal exposed serious problems of monitoring system are put, authority's statistics finds that more than 90% warning is wrong report, and it be to work as to trace sth. to its source
The disturbance identification ability and anti-interference level of front local discharge detection device, the electromagnetic interference complicated far from power transformation scene is adapted to
Environment.
It is well known that transformer station belongs to strong electromagnetic interference environment, all kinds of radio communications, radar pulse, power electronics set
All kinds of electric discharges, the equipment ground of corona, all kinds of high pressure equipment outlet casing tube ends and surface in the standby pulse that commutates, bus
Online all kinds of disturbing pulses etc., play a game with putting to monitor on-line and cause with correct diagnosis with the reliability service of measuring device with electricity
Adverse effect.Electromagnetic interference problem has become the key technology bottle of long-standing problem shelf depreciation state inspection popularization and application
Neck, field operation experiences show the disturbance identification ability and anti-interference level of current local discharge detection device, far from adaptation
The complicated electromagnetic interference environment in power transformation scene.
It is anti-interference to be always the core that Partial Discharge Detection is particularly on-line monitoring technique for a long time, from 80 years last century
Since generation, Chinese scholars are put anti-interference aspect and have done many researchs in office, developed software and hardware filtering technique, polarity discrimination and
Differential balance measure loop, phase place windowing technology, wavelet analysises and auto-adaptive filtering technique, pulses cluster isolation technics and noise
The multiple technologies means such as sensor.Research both at home and abroad for partial discharge detection Anti-Jamming Technique is more, but for substation field
The aspect systematizations such as the impact of the source of electromagnetic interference signal, feature, substation and operating condition to electromagnetic interference signal
Research work has no report, and for the electromagnetism interference performance of partial discharge monitoring device standardized test is carried out, and is from basic
The upper measure for improving partial discharge detection product quality, is also that shelf depreciation Condition Monitoring Technology further develops and perfect necessarily needs
Ask.
With the development of national economy, electric reliability is increasingly paid attention to by the whole society, in the urgent need to carrying out electric power
The research of apparatus local discharge state-detection key technology, the sensitivity, Anti-Jamming Technique and failure in Partial Discharge Detection is examined
The progress of disconnected making a breakthrough property of aspect, really causes shelf depreciation scene application technology to improve.Local discharge condition is examined
Surveying device carries out interference free performance evaluation, can be used for type approval test and the monitoring that networks that monitoring device is put in office, can be fundamentally
The networking quality of partial discharge detection product is lifted, the wrong report of condition monitoring system, rate of failing to report are put in guarantee office, lift electric network reliability water
Flat, the economic benefit and social benefit thus brought is very notable, with important theoretical and construction value.It is both domestic and external at present
In research, with regard to electromagnetic interference in transformer station's Partial Discharge Detection systematization research also in blank stage, and evaluate it is powered
Also nobody relates to interference simulation device, the system of the disturbance identification ability and anti-interference level of testing equipment and on-line monitoring equipment
Foot, has become a key technical problem urgently to be resolved hurrily.
Utility model content
The technical problems to be solved in the utility model:For the problems referred to above of prior art, there is provided a kind of by the logical of arrowband
The interference of news class and the impulse type interference in broadband separate true imitating substation scene electromagnetic environment, it is possible to increase high-tension electricity equipment
Interference free performance scientific quantification accuracy, typical interference simulation result accurately and reliably, simple structure, lower-cost office
The typical interference simulation device of portion's electric discharge.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of shelf depreciation typical case interference simulation device, including control unit, signal generating unit and signal transmitter unit,
The signal generating unit includes that radar signal occurs module, mobile communication signal generating module and controllable signal and module occurs,
The radar signal occur module, mobile communication signal generating module and controllable signal occur the control end of module respectively with control
Unit is connected, and the signal that the radar signal occurs module, mobile communication signal generating module and controllable signal generation module is defeated
Go out end to be connected with signal transmitter unit respectively.
Preferably, the signal transmitter unit includes shunt and active antenna, and the radar signal occurs module, mobile phone
There is module in communication signal and the signal output part of controllable signal generation module is connected respectively by shunt with active antenna.
Preferably, the radar signal occurs module includes the first power module, the first communication module, the first microprocessor
Device, radar signal chip, a D/A change-over circuits, the first operational amplifier, first interface circuit, the first memory modules and crystalline substance
Shake, the outfan of first power module respectively with the first communication module, first microprocessor, radar signal chip, first
D/A change-over circuits, the first operational amplifier, first interface circuit, the first memory modules, crystal oscillator are connected, first microprocessor
Device is connected by the first communication module with control unit, the signal output part of the first microprocessor successively with radar signal core
Piece, a D/A change-over circuits, the first operational amplifier, first interface circuit be connected, the outfan of the first interface circuit and
Signal transmitter unit is connected, and first memory modules, crystal oscillator are connected with first microprocessor.
Preferably, first communication module is optical-electrical converter.
Preferably, the first interface circuit is N-type interface circuit.
Preferably, the mobile communication signal generating module includes second source module, the second communication module, mobile phone core
Circuit board, the 2nd D/A change-over circuits and second interface circuit, the second source module respectively with the second communication module, mobile phone
Core circuit plate, the 2nd D/A change-over circuits, second interface circuit are connected, and the mobile phone core circuit plate is by the second communication mould
Block is connected with control unit, the signal output part of the mobile phone core circuit plate successively with the 2nd D/A change-over circuits, second interface
Circuit is connected, and the outfan of the second interface circuit is connected with signal transmitter unit.
Preferably, the controllable signal occurs module includes controllable signal generator and power amplifier, the controllable letter
The control end of number generator is connected with control unit, the signal output part and power amplifier phase of the controllable signal generator
Even, the outfan of the power amplifier is connected with signal transmitter unit.
Preferably, the controllable signal generator includes the 3rd communication module, the second microprocessor, the 3rd D/A conversion electricity
Road, the second operational amplifier, frequency mixer, the 3rd operational amplifier, the 3rd power module and peripheral circuit, second microprocessor
Device is connected by the 3rd communication module with control unit, and the signal output part of second microprocessor is changed by the 3rd D/A
Circuit is connected respectively with an input of the second operational amplifier, frequency mixer, and another input of the frequency mixer is tune
Frequency input processed, the outfan of the frequency mixer and the 3rd operational amplifier are connected, second operational amplifier, the 3rd fortune
The outfan for calculating amplifier is connected respectively with signal transmitter unit, and the peripheral circuit and the second microprocessor are connected, and described the
Three power modules respectively with the 3rd communication module, the second microprocessor, the 3rd D/A change-over circuits, the second operational amplifier, mixing
Device, the 3rd operational amplifier, peripheral circuit are connected.
Preferably, the peripheral circuit includes ROM module, clock module, display module, key circuit, extension
Memory card module and the second memory modules, the ROM module, clock module, display module, key circuit, extension are deposited
Card storage module, the second memory modules are connected respectively with the second microprocessor.
This utility model tool has the advantage that:The structure of this utility model shelf depreciation typical case's interference simulation device is mainly divided
For two large divisions, one is control unit, signal generating unit, and two is signal transmitter unit, and signal generating unit is believed including radar
Number module, mobile communication signal generating module and controllable signal occur there is module, and radar signal occurs module, mobile communication letter
Number there is the control end that module and controllable signal occur module to be connected with control unit respectively, radar signal generation module, mobile phone
There is module in communication signal and the signal output part of controllable signal generation module is connected respectively with signal transmitter unit, can simulate
Typical electromagnetic interference signal present in transformer station's Partial Discharge Detection:Mobile communication signal, radar signal, typical defect electric discharge
Interference signal, by substation field test the data of various interference signals are obtained, and Jing analyses can obtain time domain, the frequency of signal
Domain, statistical nature, such as rising edge, trailing edge, spectrum distribution, amplitude, average, various statistics spectrograms, binding characteristic information is led to
Cross control unit and signal generating unit realize the simulation of interference signal, and launched signal by signal transmitter unit,
The communication class interference of arrowband and the impulse type interference in broadband are separated into true imitating substation scene electromagnetic environment, it is possible to increase high
The accuracy of the scientific quantification of the interference free performance of piezoelectric forces equipment, with typical interference simulation result accurately and reliably, structure letter
Single, lower-cost advantage.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of this utility model embodiment.
Fig. 2 is the theory structure schematic diagram of this utility model embodiment.
Fig. 3 is the theory structure schematic diagram that radar signal occurs module in this utility model embodiment.
Fig. 4 is the theory structure schematic diagram of mobile communication signal generating module in this utility model embodiment.
Fig. 5 is the theory structure schematic diagram that controllable signal occurs module in this utility model embodiment.
Fig. 6 is the theory structure schematic diagram of controllable signal generator in this utility model embodiment.
Fig. 7 is the workflow schematic diagram of this utility model embodiment.
Fig. 8 is the communication interference signal waveform diagram that this utility model embodiment is obtained.
Fig. 9 disturbs signal waveform schematic diagram for what this utility model embodiment was obtained along noodles electric discharge.
Figure 10 is the corona class electric discharge interference signal waveform schematic diagram that this utility model embodiment is obtained.
Figure 11 is the suspension class electric discharge interference signal waveform schematic diagram that this utility model embodiment is obtained.
Figure 12 is the mains lighting supply interference signal waveform diagram that this utility model embodiment is obtained.
Figure 13 is the commutating pulse interference signal waveform diagram that this utility model embodiment is obtained.
Marginal data:1st, control unit;2nd, signal generating unit;21st, there is module in radar signal;211st, the first power supply mould
Block;212nd, the first communication module;213rd, first microprocessor;214th, radar signal chip;215th, a D/A change-over circuits;
216th, the first operational amplifier;217th, first interface circuit;218th, the first memory modules;219th, crystal oscillator;22nd, mobile communication signal
Generation module;221st, second source module;222nd, the second communication module;223rd, mobile phone core circuit plate;224th, the 2nd D/A conversions
Circuit;225th, second interface circuit;23rd, there is module in controllable signal;231st, controllable signal generator;232nd, power amplifier;
233rd, the 3rd communication module;234th, the second microprocessor;235th, the 3rd D/A change-over circuits;236th, the second operational amplifier;237、
Frequency mixer;238th, the 3rd operational amplifier;239th, the 3rd power module;3rd, signal transmitter unit;31st, shunt;32nd, day is radiated
Line.
Specific embodiment
As depicted in figs. 1 and 2, shelf depreciation typical case's interference simulation device of the present embodiment is sent out including control unit 1, signal
Raw unit 2 and signal transmitter unit 3, signal generating unit 2 includes that radar signal occurs module 21, mobile communication signal and mould occurs
There is module 23 in block 22 and controllable signal, radar signal occurs module 21, mobile communication signal generating module 22 and controllable signal
The control end that module 23 occurs is connected respectively with control unit 1, and radar signal occurs module 21, mobile communication signal generating module
22 and controllable signal occur module 23 signal output part be connected with signal transmitter unit 3 respectively.The shelf depreciation of the present embodiment
The structure of typical interference simulation device is broadly divided into two large divisions, and one is control unit 1, signal generating unit 2, and two is that signal is sent out
Unit 3 is penetrated, signal generating unit 2 includes that radar signal occurs module 21, mobile communication signal generating module 22 and controllable signal
There is the control that module 21, mobile communication signal generating module 22 and controllable signal occur module 23 in generation module 23, radar signal
End processed is connected respectively with control unit 1, and radar signal occurs module 21, mobile communication signal generating module 22 and controllable signal and sends out
The signal output part of raw module 23 is connected respectively with signal transmitter unit 3, can exist in imitating substation Partial Discharge Detection
Typical electromagnetic interference signal:Mobile communication signal, radar signal, typical defect electric discharge interference signal, by substation field
Test obtains the data of various interference signals, and Jing analyses can obtain time domain, frequency domain, the statistical nature of signal, such as rising edge, under
Drop edge, spectrum distribution, amplitude, average, various statistics spectrograms etc., binding characteristic information occurs single by control unit 1 and signal
Unit 2 realizes the simulation of interference signal, and is launched signal by signal transmitter unit 3, by the communication class interference of arrowband and
The impulse type interference in broadband separates true imitating substation scene electromagnetic environment, it is possible to increase the anti-interference of high-tension electricity equipment
Can scientific quantification accuracy, with typical interference simulation result accurately and reliably, simple structure, lower-cost advantage.Ginseng
See Fig. 2, shelf depreciation typical case's interference simulation device of the present embodiment needs to be placed in shielding interior when in use, outside dry to prevent
Disturb signal and impact is produced on the result of shelf depreciation typical case's interference simulation.
In the present embodiment, control unit 1 is concrete to be realized using PC computers, is developed by graphical programming software Labview
Go out corresponding control program, PC computers occur by ethernet communication control radar signal generating module 21, mobile communication signal
There are 23 3 signal generation apparatus of module in module 22 and controllable signal, afterwards three signal generation apparatus are connect by radio-frequency cable
Enter to signal transmitter unit 3 and launch signal, realize the simulation of signal.Control unit 1 is that whole shelf depreciation typical case is dry
Disturb the maincenter of analog, by network interface or serial ports and radar signal occur module 21, mobile communication signal generating module 22 and
There are 23 3 signal generation apparatus of module and realize communication in controllable signal, control whole shelf depreciation typical case interference simulation device
Work.In the present embodiment, the data of the various typical electromagnetic interference that control unit 1 passes through on-the-spot test, it is established that interference signal
Storehouse.Host computer procedure can call in interference storehouse including pulse and the data of train pulse, analysis obtains the corresponding of signal
Feature such as amplitude, frequency, frequency spectrum, all kinds of statistics spectrograms etc., send corresponding control instruction Regulate signal generating unit signal
Generate.
As shown in figure 3, radar signal occurs module 21 includes the first power module 211, the first communication module 212, first
Microprocessor 213, radar signal chip 214, a D/A change-over circuits 215, the first operational amplifier 216, first interface circuit
217th, the first memory modules 218(DDRAM)With crystal oscillator 219, the outfan of the first power module 211 respectively with the first communication module
212nd, first microprocessor 213, radar signal chip 214, a D/A change-over circuits 215, the first operational amplifier 216, first
Interface circuit 217, the first memory modules 218, crystal oscillator 219 are connected, and first microprocessor 213 passes through the He of the first communication module 212
Control unit 1 is connected, and the signal output part of first microprocessor 213 is electric with radar signal chip 214, D/A conversions successively
Road 215, the first operational amplifier 216, first interface circuit 217 are connected, and the outfan of first interface circuit 217 and signal are launched
Unit 3 is connected, and the first memory modules 218, crystal oscillator 219 are connected with first microprocessor 213.There is module 21 and adopt in radar signal
The mode of electronic circuit, using first microprocessor 213, can produce the radar signal chip 214 of radar signal as main part
Point, its peripheral circuit has a D/A change-over circuits 215, first interface circuit 217 to realize that contact with control unit 1 first leads to
News module 212, the first memory modules 218 and crystal oscillator 219, and to modules, the first power module 211 of chip power supply,
By each components welding is on one piece of circuit board and is packaged into a miniradar transmitter, the transmitter can produce UHF
Radar signal in detection frequency band, amplitude is adjustable.In the present embodiment, the first communication module 212 is optical-electrical converter;The present embodiment
In, first interface circuit 217 is N-type interface circuit.
As shown in figure 4, mobile communication signal generating module 22 include second source module 221, the second communication module 222,
Mobile phone core circuit plate 223, the 2nd D/A change-over circuits 224 and second interface circuit 225, second source module 221 is respectively with
Two communication modules 222, mobile phone core circuit plate 223, the 2nd D/A change-over circuits 224, second interface circuit 225 are connected, mobile phone core
Heart circuit board 223 is connected by the second communication module 222 with control unit 1, the signal output part of mobile phone core circuit plate 223 according to
Secondary to be connected with the 2nd D/A change-over circuits 224, second interface circuit 225, the outfan of second interface circuit 225 and signal are launched
Unit 3 is connected.Communication signal mostlys come from the radiation of mobile phone communication base station, is divided into the different communications of 2G, 3G, 4G of different manufacturers
Standard.Mobile communication signal generating module 22 can produce China's mobile communication frequency by way of replacing different systems Mobile phone card
All communication signals in band, communication signal is arranged most according to the amplitude range of transformer station's communication signal of on-the-spot test statistics
Wide range, for mobile communication signal generating module 22, the present embodiment employs mobile phone core circuit plate 223, in mobile phone core
The outside of circuit board 223 places required peripheral circuit, other peripheral circuit components and radar in addition to mobile phone core circuit plate 223
Signal generating module 21 is essentially identical.
Corona discharge, all kinds of high pressure equipment outlet casing tube ends and all kinds of of surface on transformer station's mesohigh conductor is put
Online all kinds of disturbing pulses of electricity, equipment ground etc. are all the pulse type signals very much like with local discharge signal, are most difficult to
Identification, it is also maximum to partial discharge detection interference, it is the whether most important part of examination field monitoring equipment normal work.Such as Fig. 5 institutes
Show, controllable signal occurs module 23 includes controllable signal generator 231 and power amplifier 232, controllable signal generator 231
Control end is connected with control unit 1, and the signal output part of controllable signal generator 231 is connected with power amplifier 232, and power is put
The outfan of big device 232 is connected with signal transmitter unit 3.The present embodiment is using controllable signal generator 231 and power amplifier
Realizing, concrete implementation mode is 232 mode:Several typical case's interference that collection in worksite is returned are read by control unit 1
Pulse and train pulse data, analysis obtain the spies such as rising edge, pulsewidth, trailing edge, pulse interval, the amplitude of signal
Controllable signal generator 231 is levied and be sent to, the output of control corresponding signal is adjusted, then is exported through power amplifier 232.
As shown in fig. 6, controllable signal generator 231 includes the 3rd communication module 233, the second microprocessor 234, the 3rd D/
A change-over circuits 235, the second operational amplifier 236, frequency mixer 237, the 3rd operational amplifier 238, the and of the 3rd power module 239
Peripheral circuit, the second microprocessor 234 is connected by the 3rd communication module 233 with control unit 1, the second microprocessor 234
Signal output part by the 3rd D/A change-over circuits 235 respectively with the second operational amplifier 236, an input of frequency mixer 237
It is connected, another input of frequency mixer 237 is modulating frequency input, the outfan of frequency mixer 237 and the 3rd operation amplifier
Device 238 is connected, and the second operational amplifier 236, the outfan of the 3rd operational amplifier 238 are connected respectively with signal transmitter unit 3,
Peripheral circuit and the second microprocessor 234 are connected, the 3rd power module 239 respectively with the 3rd communication module 233, the second microprocessor
Device 234, the 3rd D/A change-over circuits 235, the second operational amplifier 236, frequency mixer 237, the 3rd operational amplifier 238, periphery electricity
Road is connected.The systematic function containing waveform compilation of controllable signal generator 231, according to the various features of the signal of the transmission of control unit 1
The random waveform required for us, built-in a number of nonvolatile memory are obtained with actual Wave data computing(Expand
Exhibition memory card module), random access memory editor's waveform is conducive to reference pair ratio, by random Interface communication transfer to computer work
Further analysis and process, while also having modulation and scan capability.
In the present embodiment, peripheral circuit includes ROM module(ROM), clock module, display module, button electricity
Road, extension storage card module(SD card memory module)With the second memory modules(DDRAM), ROM module, clock module,
Display module, key circuit, extension storage card module, the second memory modules are connected respectively with the second microprocessor 234.
In the present embodiment, power amplifier 232 is under conditions of Setting signal distortion rate, it is ensured that with maximum power output
Signal, input impedance is in 15000 Ω, strong antijamming capability;The distortion factor is below 0.05%;Signal to noise ratio snr >=5.
In the present embodiment, signal transmitter unit 3 includes shunt 31 and active antenna 32, radar signal occur module 21,
There is the signal output part of module 23 respectively by shunt 31 and radiation in mobile communication signal generating module 22 and controllable signal
Antenna 32 is connected.Active antenna 32 is active antenna of the frequency band in 0~3GHz, and the amplitude-frequency response in frequency band is close to ideal,
Standing-wave ratio≤1.2, the Ω of nominal impedance 50 well can radiate signal.
As shown in fig. 7, the course of work of the present embodiment shelf depreciation typical case's interference simulation device is as follows:
1)Control unit 1 by initially set up with radar signal occur module 21, mobile communication signal generating module 22 and
There is the communication of 23 3 signal generation apparatus of module in controllable signal, check whether communication is normal, performs if normal next
Step;
2)For the simulation of radar and mobile communication signal, the spy of the radar signal that met with a response by the computing of control unit 1
Levy, then send intensity, the Frequency of the signal of radar communication signal control radar signal generating module 21 generation;For pulse
The simulation of type interference, control unit 1 reads the time domain data that on-the-spot test is arrived(Including pulse data and train pulse data)、
Corresponding collection of illustrative plates, carries out the calculation process of correlation, obtains individual features and waveform, collection of illustrative plates, and by individual features and waveform, collection of illustrative plates
The extension storage card module of controllable signal generator 231 is sent to, is occurred by the upper computer software control signal of control unit 1
Device reads data and sees off signal to after computing in the second memory modules.Finally, it is dry by the present embodiment shelf depreciation typical case
Disturb analog and simulate the communication interference signal waveform for obtaining as shown in figure 8, along noodles electric discharge interference signal waveform such as Fig. 9 institutes
Show, as shown in Figure 10, the electric discharge of suspension class disturbs signal waveform as shown in figure 11 to corona class electric discharge interference signal waveform, mains lighting supply
As shown in figure 12, commutating pulse interference signal waveform as shown in figure 13, can realize shelf depreciation typical case's interference to interference signal waveform
Simulation.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, some improvement under the premise of without departing from this utility model principle and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.