CN106226603A - The corona loss of a kind of HVAC power transmission line measures system and method - Google Patents
The corona loss of a kind of HVAC power transmission line measures system and method Download PDFInfo
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- CN106226603A CN106226603A CN201610600187.8A CN201610600187A CN106226603A CN 106226603 A CN106226603 A CN 106226603A CN 201610600187 A CN201610600187 A CN 201610600187A CN 106226603 A CN106226603 A CN 106226603A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/142—Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a kind of HVAC power transmission line corona loss and measure system, described system includes: voltage measurement module on high-voltage line, and HV voltage signal real-time Transmission measurement obtained is to data acquisition module on high-voltage line；Electric resistance sensor, measures and transmits data acquisition module to high-voltage line to corona current signal；Data acquisition module on high-voltage line, uses dual pathways synchronous acquisition pattern that described HV voltage signal and described corona current signal carry out synchronous acquisition, and utilizes optical fiber transmission line to be sent to photoelectric conversion module under high-voltage line after being respectively converted into two optical signals；Photoelectric conversion module under high-voltage line, is respectively converted into two signals of telecommunication by said two optical signal by opto-electronic conversion, and is transferred to host computer and processes；Host computer, two signals of telecommunication carrying out photoelectric conversion module transmission under high-voltage line are received and calculate corona loss；And supply module, use accumulator battery to power, it is ensured that described system can normally work.
Description
Technical field
The present invention relates to measurement and calibration field, and the corona more particularly, to a kind of HVAC power transmission line damages
Consumption measures system and method.
Background technology
For implementing national energy policy, it is ensured that power industry comprehensively, coordinate, continuable sound development, national grid is public
Department proposes the Major Strategic behave accelerating development alternating current-direct current extra-high voltage grid according to China's national situation.UHV transmission is in superelevation
Grow up on the basis of pressure transmission of electricity, it is possible to achieve remote, high capacity transmission electric energy, be suitable for interconnection power system.
On UHV transmission way choice, it is impossible to simple say which kind of power transmission mode is good or which kind of power transmission mode
Difference, the most specifically chosen, the advantage of competence exertion UHV transmission.In ultra-high voltage AC transmission electric pressure
In selection, set out according to actual needs, through a series of experimental demonstration, select 1000kV electric pressure be both economical rationally
's；After electric pressure is selected, during transmission line of electricity conveying high-pressure electricity, the transmission considering under this electric pressure is needed to damage
Consumption, such as the corona loss when heating loss produced when wire is by electric current and generation corona current.The most first had
The loss of body, just can calculate the efficiency of ultra-high voltage AC transmission, simultaneously according to production, the generation spy of loss
Point, improves ultra-high voltage AC transmission mode.Therefore, the loss of research ultrahigh voltage alternating current transmission lines is to weigh very much
Want.In the case of weather condition is good, ultrahigh voltage alternating current transmission lines is not likely to produce corona current, at this moment UHV transmission
The prevailing transmission loss of circuit is exactly the resistance heating loss on electric wire, and under some specific condition, and such as High aititude, remote
Area, circuit passes through local climate very severe, and the ratio that rain, snow, frost, greasy weather gas account for the whole year is very big, and corona loss may become
Main aspect for electric energy loss.Therefore, the research of transmission line of electricity corona loss is China 1000kV extra-high voltage electric transmission and transformation engineering
One of key technology.
External aspect, after the 1950's, the U.S. and Russia, add, anticipate, method and day in succession build test line segment, carry out electricity
The measurement Research of dizzy loss, but limit owing to various countries' transmission voltage grade exists, and most countries is only at research supertension
The country such as the corona loss of transmission line of electricity, the only U.S. and Italy can carry out the related experiment of extra high voltage line.
Domestic aspect, the eighties in 20th century, China Electric Power Research Institute, Xian High voltage Apparatus Research Institute, state's net
Different electric pressure transmission line of electricity corona loss were carried out research by the units such as Electric Power Research Institute, but due to experiment condition
Relative shortcoming, research contents lacks multiformity, the research to the AC extra high voltage transmission line corona loss under complicated weather
Compare less.Until nineteen ninety-five, Wuhan High Voltage Research Institute Of State Grid builds up open field test field extra-high voltage experiment line segment, will exchange defeated
Piezoelectric voltage grade rises to 1000kV, and each research unit of China is just carried out extra-high voltage 1000kV level AC transmission system engineering
Research work, for accelerating country's planning of mains network and construction process, it then follows draw international advanced technology and experience, fully
The technical policy considering technology maturation and production domesticization is done step-by-step is laid a good foundation.North China Electric Power University Liu Yun roc et al. in order to
Research ultrahigh voltage alternating current transmission lines corona loss characteristic under sleet meteorological condition, develops photoelectricity numeralization transmission line of electricity
Corona loss monitoring system, returns at China's UHV AC Test Base list and tests on test line segment, this monitoring system
Major advance is, it is achieved that on-line measurement under test line segment corona loss all weather conditions, can be according to analysis on monitoring result
Corona loss under different rates of rainall and heavy snow meteorological condition, but these system many places use A/D and D/A module so that system
Real-time the highest, measurement error is bigger.China Power academy of science and BJ University of Aeronautics & Astronautics's cooperation research and development go out HVDC
Transmission line of electricity corona loss measures system, and the measurement result of this measurement system is accurate, have strong anti-electrical breakdown performance, it is possible to
Run steadily in the long term under the conditions of ultra-high/extra-high voltage DC environment and various extreme natural environment, and use split-type structural, it is easy to be existing
Field I&M, but this measurement system is not suitable for HVAC power transmission line corona loss and measures.
The domestic and international extra-high-voltage alternating current corona current Research on measuring technique present situation of comprehensive analysis, surveys in conjunction with extra-high voltage corona current
The practical situation of amount system development, currently mainly existence so some problems:
The most existing corona current is measured system structure and is optimized not, it is impossible to the vile weather that reply is outdoor, meets extreme sky
Air-capacitor easily breaks down.
In the most existing AC corona current measurement system, corona current and voltage synchronous acquisition scheme are the most perfect, with
Step precision is the highest.
Summary of the invention
In order to solve the problems referred to above, according to an aspect of the present invention, it is provided that the corona of a kind of HVAC power transmission line
Loss measurement system, described system includes:
Voltage measurement module on high-voltage line, HV voltage signal measurement obtained utilizes optical fiber transmission line real-time Transmission
Data acquisition module to high-voltage line；
Electric resistance sensor, series connection accesses in HVAC power transmission line, corona current signal is measured and transmits to
Data acquisition module on high-voltage line；
Data acquisition module on high-voltage line, uses dual pathways synchronous acquisition pattern to described HV voltage signal and described electricity
Corona current signal carries out synchronous acquisition, and utilizes optical fiber transmission line to be sent under high-voltage line after being respectively converted into two optical signals
Photoelectric conversion module；
Photoelectric conversion module under high-voltage line, is respectively converted into two telecommunications by said two optical signal by opto-electronic conversion
Number, and be transferred to host computer and process；
Host computer, two signals of telecommunication carrying out photoelectric conversion module transmission under high-voltage line are received and calculate corona damaging
Consumption；And
Supply module, uses accumulator battery to power, it is ensured that described system can normally work.
Preferably, on wherein said high-voltage line, voltage measurement module is positioned at the protection bucket of the metal material of cylinder, and
And grading ring is installed at the two ends of described protection bucket.
Preferably, on wherein said high-voltage line, voltage measurement module is arranged on the rear end of high tension generator.
Preferably, on wherein said high-voltage line, voltage measurement module includes: voltage transformer, Wave shape changing device and photoelectricity
Conversion transmitter group；The primary winding series connection of wherein said voltage transformer accesses high-voltage alternating circuit, and secondary coil accesses ripple
Fractal transform device and opto-electronic conversion transmitter, the voltage signal of telecommunication that measurement is obtained by described voltage transformer is sent out by opto-electronic conversion
Device is sent to be converted to optical signal and transmit to high-voltage line data acquisition module.
Preferably, wherein said electric resistance sensor is arranged on same position on high-voltage line with data acquisition module on high-voltage line
Put place, and described electric resistance sensor is installed in protection bucket with data acquisition module on high-voltage line, reduces high-voltage alternating
The complex electromagnetic environment that circuit the produces impact on corona current signal.
Preferably, on wherein said high-voltage line, data acquisition module includes: capture card, optical-electrical converter and control circuit
Plate；Wherein said control circuit plate is the hinge that on high-voltage line, data acquisition module block device connects, to data acquisition on high-voltage line
The state of module device is controlled, and described optical-electrical converter will be transferred to data acquisition on high-voltage line by optical fiber transmission line
The optical signal of module is converted to the signal of telecommunication and transmits to capture card.
Preferably, collect two signals of telecommunication are converted to two light by opto-electronic conversion by wherein said capture card respectively
After signal, descend into photoelectric conversion module under high-voltage line by optical fiber transmission line.
Preferably, under on wherein said high-voltage line, data acquisition module passes through described optical fiber transmission line and described high-voltage line
Photoelectric conversion module is connected.
According to another aspect of the present invention, it is provided that the corona loss measuring method of a kind of HVAC power transmission line,
Described method includes:
Supply module uses accumulator battery to be powered system, it is ensured that described system can normally work；
The HV voltage signal that on high-voltage line, voltage measuring transformer is obtained by voltage measurement module utilizes optical fiber transmission line
Road real-time Transmission is to data acquisition module on high-voltage line；
Electric resistance sensor is utilized to measure and transmit data acquisition module to high-voltage line to corona current signal；
On high-voltage line, data acquisition module carries out synchronous acquisition to described HV voltage signal and described corona current signal,
And utilize optical fiber transmission line to be sent to photoelectric conversion module under high-voltage line after being respectively converted into two optical signals；
Under high-voltage line, said two optical signal is respectively converted into two signals of telecommunication by opto-electronic conversion by photoelectric conversion module,
And be transferred to host computer and process；And
Two signals of telecommunication that photoelectric conversion module transmission under high-voltage line is come by host computer are received and calculate corona loss；
Preferably, on wherein said high-voltage line, voltage measurement module is arranged on the rear end of high tension generator.
Preferably, on wherein said high-voltage line, voltage measurement module is positioned at the protection bucket of the metal material of cylinder, and
And grading ring is installed at the two ends of described protection bucket.
Preferably, on wherein said high-voltage line, voltage measurement module includes: voltage transformer, Wave shape changing device and photoelectricity
Conversion transmitter group；The primary winding series connection of wherein said voltage transformer accesses high-voltage alternating circuit, and secondary coil accesses ripple
Fractal transform device and opto-electronic conversion transmitter, the voltage signal of telecommunication that measurement is obtained by described voltage transformer passes through opto-electronic conversion
Transmitter is converted to optical signal and transmits to high-voltage line data acquisition module.
Preferably, the series connection of wherein said electric resistance sensor accesses in HVAC power transmission line.
Preferably, on wherein said high-voltage line, data acquisition module uses dual pathways synchronous acquisition pattern.
Preferably, wherein said electric resistance sensor is arranged on same position on high-voltage line with data acquisition module on high-voltage line
Put place, and described electric resistance sensor is installed in protection bucket with data acquisition module on high-voltage line, reduces high-voltage alternating
The complex electromagnetic environment that circuit the produces impact on corona current signal.
Preferably, on wherein said high-voltage line, data acquisition module includes: capture card, optical-electrical converter and control circuit
Plate；Wherein said control circuit plate is the hinge that on high-voltage line, data acquisition module block device connects, to data acquisition on high-voltage line
The state of module device is controlled, and described optical-electrical converter will be transferred to data acquisition on high-voltage line by optical fiber transmission line
The optical signal of module is converted to the signal of telecommunication and transmits to capture card.
Preferably, collect two signals of telecommunication are converted to two light by opto-electronic conversion by wherein said capture card respectively
After signal, descend into photoelectric conversion module under high-voltage line by optical fiber transmission line.
Preferably, under on wherein said high-voltage line, data acquisition module passes through described optical fiber transmission line and described high-voltage line
Photoelectric conversion module is connected.
The beneficial effects of the present invention is:
1. on high-voltage line, the capture card in data acquisition module uses dual pathways synchronous acquisition pattern, it is ensured that collect
High voltage signal and the synchronization accuracy of corona current signal so that the accuracy of calculated corona loss is higher.
2. on electric resistance sensor and high-voltage line, data acquisition module is unified installs, and the signal of telecommunication gathered is passed through optical fiber
Transmission line transmits to high-voltage line upper module so that HV voltage signal and the collection of corona current signal and processing procedure are maximum
Not affected by extraneous high-voltage electromagnetic environment of limit, has good effectiveness.
3. the connection of data acquisition module and data acquisition on high-voltage line on voltage measurement module and high-voltage line on high-voltage line
Under module and high-voltage line, the connection between photoelectric conversion module all uses fibre circuit so that the capacity of resisting disturbance of transmission line
By force, the coverage of transmission big, data acquisition module and high pressure on voltage measurement module and high-voltage line can be met on high-voltage line
Long-distance transmissions between photoelectric conversion module under data acquisition module and high-voltage line on line.
The corona loss of HVAC power transmission line the most proposed by the invention measures system can be at various severe natural rings
Run steadily in the long term under the conditions of border, HVAC power transmission line can be carried out under the complicated environment such as weather condition and High aititude
Corona loss is tested, and draws the relation of the environment such as weather condition and High aititude and HVAC power transmission line corona loss, optimizes
High-voltage AC transmission net, and then produce significant Social benefit and economic benefit.
Accompanying drawing explanation
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by:
Fig. 1 shows that the corona loss according to embodiment of the present invention measures the structural representation of system 100；
Fig. 2 shows that the corona loss according to embodiment of the present invention measures voltage measurement module on system mesohigh line
Flow chart；
Fig. 3 shows the circuit of waveform voltage signal transmission in the corona loss measurement system according to embodiment of the present invention
The structural representation of figure；
Fig. 4 shows and protects bucket to be installed on test line segment in the corona loss measurement system according to embodiment of the present invention
Structural representation；
Fig. 5 shows and protects bucket to place data on high-voltage line in the corona loss measurement system according to embodiment of the present invention
Acquisition module and electric resistance sensor schematic diagram；
Fig. 6 shows that the structure of the harvester used in the corona loss measurement system according to embodiment of the present invention is shown
It is intended to；
Fig. 7 shows control circuit plate logical schematic in the corona loss measurement system according to embodiment of the present invention；
Fig. 8 shows that the corona loss according to embodiment of the present invention is measured the connection of side apparatus under system mesohigh line and shown
It is intended to；
Fig. 9 shows the functional sequence in the corona loss measurement system according to embodiment of the present invention performed by host computer
Figure；
Figure 10 shows the flow chart of the corona loss measuring method 1000 according to embodiment of the present invention；And
Figure 11 shows the exchange 1000kV high pressure of the extra-high voltage poles and towers proving ground, Bazhou according to embodiment of the present invention
Common-tower double-return line pole tower schematic diagram.
Wherein, 1,7 is test line segment, and 2,6 is pipe bus, and 3,5,8,13,14,15 is grading ring, and 4 is protection bucket, 9,16
Being outdoor optical fiber, 10,12 is load-bearing insulator, and 11 is optical fiber insulator, and 17,18 is optic fibre switching box, and 41 is pipe bus, 42,
48 is metal flange, and 43,45 is insulating flange, and 44 is PE pipe, and 46 is grading ring, and 47 is optical fiber interface, and 49 is pipe bus opening,
410 is pipe bus opening top cover, and A1 is high tension generator, and A2 is pipe bus, and A3 is high-pressure tower bar, and A4 is aerial condutor, and A5 is
Load-bearing insulator.
Detailed description of the invention
With reference now to accompanying drawing, introduce the illustrative embodiments of the present invention, but, the present invention can be by many different shapes
Formula is implemented, and is not limited to embodiment described herein, it is provided that these embodiments are at large and fully disclose
The present invention, and the scope of the present invention is fully passed on to person of ordinary skill in the field.For representing showing in the accompanying drawings
Term in example embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements uses identical attached
Figure labelling.
Except as otherwise noted, person of ordinary skill in the field is had by term used herein (including scientific and technical terminology)
Common understand implication.Further it will be understood that the term limited with normally used dictionary, it should it is understood to and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or the most formal meaning.
Fig. 1 shows that the corona loss according to embodiment of the present invention measures the structural representation of system 100.Such as Fig. 1 institute
Showing, corona loss is measured system 100 and is included: data on voltage measurement module 101, electric resistance sensor 102, high-voltage line on high-voltage line
Photoelectric conversion module 104, host computer 105 and supply module 106 under acquisition module 103, high-voltage line.Voltage measurement mould on high-voltage line
The HV voltage signal that measurement is obtained by block 101 utilize optical fiber transmission line real-time Transmission to high-voltage line data acquisition module
103.Preferably, on wherein said high-voltage line, voltage measurement module 101 is positioned at the protection bucket of the metal material of cylinder, and
Grading ring is installed at the two ends of described protection bucket.Preferably, on wherein said high-voltage line, voltage measurement module 101 is arranged on high pressure
The rear end of generator.Preferably, on wherein said high-voltage line, voltage measurement module 101 includes: voltage transformer, waveform convert
Device and opto-electronic conversion transmitter group；The primary winding series connection of wherein said voltage transformer accesses high-voltage alternating circuit, secondary
Coil accesses Wave shape changing device and opto-electronic conversion transmitter, the high tension voltage signal of telecommunication that measurement is obtained by described voltage transformer
Be converted to optical signal by opto-electronic conversion transmitter and transmit to high-voltage line data acquisition module 103.
Fig. 2 shows that the corona loss according to embodiment of the present invention measures voltage measurement module on system mesohigh line
Flow chart.As in figure 2 it is shown, voltage measurement module 101 is the power frequency simple alternating current high pressure produced by high tension generator on high-voltage line
Voltage signal is converted to low voltage voltage signal, and passes through optical cable transmission line after directly simulation low voltage signal being converted to optical signal
Road real-time Transmission is to data acquisition module on high-voltage line 103.
Fig. 3 shows the circuit of waveform voltage signal transmission in the corona loss measurement system according to embodiment of the present invention
The structural representation of figure.As it is shown on figure 3, voltage measurement module 101 is to data acquisition module on high-voltage line 103 on described high-voltage line
HV voltage signal waveform transfer circuit by HFBR1414 photoemission module, optical cable, HFBR2416 photelectric receiver and
Modulate circuit forms.Concrete principle is: utilize constant-current source circuit to drive described fiber optic emitter HFBR1414 by input sine wave
Voltage signal is converted to optical signal, by optical fiber cable transmission to described HFBR2416 photelectric receiver, described HFBR2416 light
Electricity receptor exports from 2 pins, owing to long range propagation signal can exist decay, biasing etc. after converting optical signals to the signal of telecommunication
Distortion, nurses one's health the signal of 2 pin outputs.
Preferably, electric resistance sensor 102 series connection accesses in HVAC power transmission line, measures corona current signal
And transmit to high-voltage line data acquisition module 103.Preferably, wherein said electric resistance sensor 102 and data acquisition on high-voltage line
Collection module 103 is arranged on same position on high-voltage line, and described electric resistance sensor and data acquisition module on high-voltage line
It is installed in protection bucket, reduces the complex electromagnetic environment impact on corona current signal that high-voltage alternating circuit produces.Fig. 4
Show and the corona loss measurement system according to embodiment of the present invention is protected bucket be installed on the structural representation of test line segment.
As shown in Figure 4, described protection bucket 4 is suspended between two sections of pipe buses 2 and 6, is attached by grading ring 3 and 5.Load-bearing is exhausted
Edge 10 and 12 has hung pipe bus 2,6 and test line segment 1,7, and optical fiber passes from optical fiber insulator 11 inside, and passes through two ends
Interconnecting device 17,18 is connected with outdoor optical fiber 16,9, the outdoor optical fiber interface 47 of another termination protection bucket 4 of outdoor optical fiber 9, outdoor
Voltage measurement module 101 on photoelectric conversion module 104 and high-voltage line under another termination high-voltage line of optical fiber 16.In described protection bucket
High-voltage line on after data acquisition module 103 collects signal, transmitted to optical fiber insulator 11 by outdoor optical fiber 9, pass through
Optical fiber insulator 11 transmission is to outdoor optical fiber 16, and outdoor optical fiber 16 is two long distance outdoor optical cables, and one section is used for connecting high pressure
On line, data acquisition module 103 on voltage measurement module 101 and high-voltage line, measures voltage measurement module on high-voltage line 101
To voltage waveform real-time Transmission to data acquisition module on high-voltage line 103, another section connects photoelectric conversion module under high-voltage line
104, the signal collected by data acquisition module on high-voltage line 103 transmits to host computer 105.
Fig. 5 shows and protects bucket to place data on high-voltage line in the corona loss measurement system according to embodiment of the present invention
Acquisition module and electric resistance sensor schematic diagram.As it is shown in figure 5, data acquisition module 103 is opened by pipe bus on described high-voltage line
Mouth 49 is arranged in pipe bus 41, and fixes 410 pipe bus opening top covers by 4 hexagonal socket nuts, by pipe bus pair
On high-voltage line, data acquisition module carries out electromagnetic shielding, ensures that the signal collected is not affected by outside strong electromagnetic, and
And ensure the safe and reliable of under IFR conditions equipment.Described electric resistance sensor 102 is positioned in PE pipe 44, on high-voltage line
Data acquisition module 103 connects the two ends of electric resistance sensor 102 respectively by Shielded Twisted Pair, when there being electric current in resistance, high
On line ball, data acquisition module 103 can collect the voltage data at electric resistance sensor 102 two ends.
Preferably, on high-voltage line, data acquisition module 103 uses dual pathways synchronous acquisition pattern to believe described high tension voltage
Number and described corona current signal carry out synchronous acquisition, and utilize optical fiber transmission line transmission after being respectively converted into two optical signals
Photoelectric conversion module 104 to high-voltage line.Preferably, on wherein said high-voltage line, data acquisition module 103 includes: capture card,
Optical-electrical converter and control circuit plate；Wherein said control circuit plate is that on high-voltage line, data acquisition module 103 equipment connects
Hinge, is controlled the state of data acquisition module on high-voltage line 103 equipment, and described optical-electrical converter will pass through fiber-optic transfer
Line transmission is converted to the signal of telecommunication to the optical signal of data acquisition module on high-voltage line 103 and transmits to capture card.
Fig. 6 shows the structure of the harvester used in the corona loss measurement system according to embodiment of the present invention
Schematic diagram.As shown in Figure 6, harvester synchronous acquisition method is to transmit high tension voltage waveshape signal and corona current signal to same
One dimensional orientation, the multichannel synchronousing collection technology of recycling harvester carries out signal synchronous collection.Preferably, wherein said
After collect two signals of telecommunication are converted to two optical signals by opto-electronic conversion by capture card respectively, pass through optical fiber transmission line
Descend into photoelectric conversion module 104 under high-voltage line.Preferably, on wherein said high-voltage line, data acquisition module 103 passes through described
Optical fiber transmission line is connected with photoelectric conversion module 104 under described high-voltage line.
Fig. 7 shows control circuit plate logical schematic in the corona loss measurement system according to embodiment of the present invention.
As it is shown in fig. 7, described control circuit plate is as the control core part of data acquisition module on high-voltage line 103, it is on high-voltage line
The hinge that data acquisition module 103 equipment connects, by control circuit plate, it is possible to achieve to data acquisition module on high-voltage line
The control of 103 equipment states.
Described control circuit plate mainly completes six work: 1) equipment is powered: data acquisition module 103 on high-voltage line
In, the running voltage of various equipment is different from, and wherein, capture card running voltage is+6V, USB optic fiber converter work electricity
Pressure is+5V, and it is+5V that voltage waveform receives the running voltage of device ,-5V, uses power supply chip to carry out voltage conversion, and system supplies
Electricity uses 12V battery to power, and one piece of 5V power supply chip LM2576-5 runs to provide 5V power supply always, LM2678ADJ and
LM2678-5 carries out break-make respectively to control capture card and the power supply of USB optic fiber converter, select LM2660 chip provide-
5V power supply, simultaneously by PCB carries out design of Electromagnetic Shielding to a certain extent, and the electromagnetic protection of periphery is arranged
Execute, reduce the impact that equipment is powered by strong electromagnetic environment, it is ensured that the stable operation of system；2) voltage waveform receives conditioning:
It is integrated with fiber optic receiver and interlock circuit on control circuit plate, voltage measurement module on high-voltage line 101 can be transmitted
Voltage waveform optical signal is converted into the signal of telecommunication, and after adjusting waveform, transmission to capture card is acquired；3) fiber switch: controlling
Being integrated with the receptor of optical fiber telemetry switch on plate, the emitter of fiber switch is positioned at photoelectric conversion module under high-voltage line simultaneously
In, by PC control light wiretap transmitter module, with the power supply of remote control equipment, thus whole acquisition system can be controlled
Duty；4) signal measurement switching: be designed with fiber switch on control circuit plate and measure switching device, this be due to
This capture card used only has 2 road signal inputs, and whole system needs the amount measured to have three: corona current, voltage wave
Shape and cell voltage, therefore, complete the handover measurement of signal by a magnetic latching relay；5) equipment overvoltage protection: due to
Working environment electric pressure is at about million volts, and instantaneous pressure pulse is easily destroyed sensing element and capture card passage, for preventing
This type of situation occurs, and can add protection circuit, P6KE15CA Transient Suppression Diode TVS and 2R-75V pottery in parallel at resistance two ends
Porcelain discharge diode；6) equipment short-circuit protection: for measuring system acquisition module, its suffered affected by high not only limits
In high-tension line itself, it is also possible to come from the attack of thunder and lightning under thunder and lightning weather environment, therefore, at thunder and lightning weather environment to adopting
The all probes of truck all carry out short-circuit protection.Concrete measure is to use the COM end of relay and RESET end to connect capture card respectively
Probe+level and-level, and when using capture card, controlling relay COM end and SET end by fiber switch and disconnect, collection sticks into
Row measures work normally；When not measuring, fiber switch controls relay Guan Bi and is popped one's head in by capture card short-circuit, so,
Plus TVS pipe and gas-discharge tube, can reach to protect the purpose of capture card.
Preferably, under high-voltage line, said two optical signal is respectively converted into by photoelectric conversion module 104 by opto-electronic conversion
Two signals of telecommunication, and be transferred to host computer 105 and process.Fig. 8 shows that the corona loss according to embodiment of the present invention is surveyed
The connection diagram of side apparatus under amount system mesohigh line.As shown in Figure 8, under described high-voltage line, photoelectric conversion module 104 passes through
USB interface and serial line interface and a high-performance computer connect, and both are placed in distance test (DT) line segment and there is a segment distance
Control room in, capture program and man machine interface that controllers is write by realization operate this high-performance computer and send out
Going out the control command of electrical signal form, under high-voltage line, photoelectric conversion module 104 converts electrical signals to optical signal, then by outdoor
Fiber-optic transfer, to measuring on the upside of system high pressure line, arrives the purpose controlling high-voltage line topside equipment.
Preferably, two signals of telecommunication that photoelectric conversion module under high-voltage line 104 transmission is come by host computer 105 are received also
Calculate corona loss.Fig. 9 shows the merit in the corona loss measurement system according to embodiment of the present invention performed by host computer
Can flow chart.As it is shown in figure 9, described host computer 105 is by USB interface and serial line interface and opto-electronic conversion mould under described high-voltage line
Block 104 is connected, and is first turned on connectivity port, enters into manual acquisition interface, and selection is, enters into measurement system interface, no
Then come back to open port interface；After entering into measurement system interface, open line upper module power supply, it is judged that whether electricity fills
Foot, if abundance, initializes capture card, and wherein capture card is dual pathways synchronous acquisition, arranges store path and voltage afterwards
Current class, if electricity is not enough, the most directly terminates whole measurement process；Store path is set and voltage x current grade completes
Judge whether afterwards automatically to gather, if selecting is then automatically to be acquired data, process and preserve；Otherwise, then use
Data are acquired, process and preserve by the pattern manually gathered；Terminate measurement process the electricity of closed line upper module subsequently
Source, measurement process terminates.In the entire system, host computer receives, preserves and process described high voltage signal and corona current letter
Number, and then obtain required corona loss.
Preferably, supply module 106 uses accumulator battery to power, it is ensured that described system can normally work.
Figure 10 shows the flow chart of the corona loss measuring method 1000 according to embodiment of the present invention.Such as Figure 10 institute
Showing, corona loss measuring method, from the beginning of step 1001, uses accumulator battery to supply system in step 1001 supply module
Electricity, it is ensured that described system can normally work.
Preferably, the high tension voltage letter that voltage measuring transformer is obtained by voltage measurement module on step 1002 high-voltage line
Number utilize optical fiber transmission line real-time Transmission to high-voltage line data acquisition module.Preferably, described in, on high-voltage line, voltage is surveyed
Amount module is arranged on the rear end of high tension generator.Preferably, on wherein said high-voltage line, voltage measurement module is positioned at cylinder
In the protection bucket of metal material, and grading ring is installed at the two ends of described protection bucket.Preferably, wherein said high-voltage line powers on
Pressure measurement module includes: voltage transformer, Wave shape changing device and opto-electronic conversion transmitter group；Wherein said voltage transformer
Primary winding series connection accesses high-voltage alternating circuit, and secondary coil accesses Wave shape changing device and opto-electronic conversion transmitter, described electricity
The voltage signal of telecommunication that measurement is obtained by pressure transformer is converted to optical signal by opto-electronic conversion transmitter and transmits to high-voltage line
Data acquisition module.
Preferably, utilize electric resistance sensor that corona current signal is measured and transmitted to high-voltage line in step 1003
Data acquisition module.Preferably, the series connection of wherein said electric resistance sensor accesses in HVAC power transmission line.
Preferably, on step 1004 high-voltage line data acquisition module to described HV voltage signal and described corona current
Signal carries out synchronous acquisition, and utilizes optical fiber transmission line to be sent to photoelectricity under high-voltage line after being respectively converted into two optical signals to turn
Die change block.Preferably, on wherein said high-voltage line, data acquisition module uses dual pathways synchronous acquisition pattern.Preferably, wherein
Described electric resistance sensor and data acquisition module on high-voltage line are arranged on same position on high-voltage line, and described resistance passes
Sensor and data acquisition module on high-voltage line are installed in protection bucket, reduce the complicated electromagnetism ring that high-voltage alternating circuit produces
The border impact on corona current signal.Preferably, on wherein said high-voltage line, data acquisition module includes: capture card, and photoelectricity turns
Parallel operation and control circuit plate；Wherein said control circuit plate is the hinge that on high-voltage line, data acquisition module block device connects, to height
On line ball, the state of data acquisition module block device is controlled, and described optical-electrical converter will be transferred to height by optical fiber transmission line
On line ball, the optical signal of data acquisition module is converted to the signal of telecommunication and transmits to capture card.Preferably, wherein said capture card will
After two signals of telecommunication collected are converted to two optical signals by opto-electronic conversion respectively, descend into height by optical fiber transmission line
Photoelectric conversion module under line ball.
Preferably, under step 1005 high-voltage line, said two optical signal is passed through opto-electronic conversion respectively by photoelectric conversion module
Be converted to two signals of telecommunication, and be transferred to host computer and process.Preferably, on wherein said high-voltage line, data acquisition module leads to
Cross described optical fiber transmission line to be connected with photoelectric conversion module under described high-voltage line.
Preferably, two signals of telecommunication carried out photoelectric conversion module transmission under high-voltage line in step 1006 host computer connect
Receive and calculate corona loss.
Figure 11 shows the exchange 1000kV high pressure of the extra-high voltage poles and towers proving ground, Bazhou according to embodiment of the present invention
Common-tower double-return line pole tower schematic diagram.As shown in figure 11, HVAC power transmission line corona loss measurement systematic difference platform is
1000 kilovolts of extra-high voltage same tower double circuit line pole towers of the exchange of extra-high voltage poles and towers proving ground, Bazhou.Voltage measurement module on high-voltage line
Being arranged on after high tension generator A1, on high-voltage line, data acquisition module and electric resistance sensor unification are arranged in protection bucket, and
Suspension is installed on below load-bearing insulator A5, with outdoor optical fiber by optical fiber insulator by data acquisition module on high-voltage line and height
Under line ball, on light Denso die change block and high-voltage line, voltage measurement module couples together, and by light Denso die change block under high-voltage line and upper
Position machine couples together.
When carrying out ultrahigh voltage alternating current transmission lines corona loss and measuring related experiment, first to conducting line segment plus voltage,
Controllers controls high tension generator in booster chamber and produces ac high voltage the most on request, is led to built on stilts by the transmission of pipe bus
On line, aerial condutor one end adds extra-high voltage, and other end is unsettled.During wire is boosted by high tension generator, lead
Line and the high tension generator as power supply cannot form circuit loop, cause existing voltage on aerial condutor, but do not have electricity
Stream.When electric pressure rises to 1000kV from 100kV always, air is breakdown, and conducting line segment carries out corona discharge to air, this
Sample, will form current path, produces corona loss.
By describing the present invention with reference to a small amount of embodiment.But, known in those skilled in the art, just
As subsidiary Patent right requirement is limited, except the present invention other embodiment disclosed above falls equally in the present invention
In the range of.
Normally, all terms used in the claims are all solved in the usual implication of technical field according to them
Release, unless additionally defined clearly wherein.All of reference " one/described/be somebody's turn to do [device, assembly etc.] " is all opened ground
It is construed at least one example in described device, assembly etc., unless otherwise expressly specified.Any method disclosed herein
Step all need not be run, unless explicitly stated otherwise with disclosed order accurately.
Claims (18)
1., for HVAC power transmission line carries out a corona loss measurement system, described system includes:
Voltage measurement module on high-voltage line, HV voltage signal measurement obtained utilizes optical fiber transmission line real-time Transmission paramount
Data acquisition module on line ball；
Electric resistance sensor, series connection accesses in HVAC power transmission line, corona current signal is measured and transmitted to high pressure
Data acquisition module on line；
Data acquisition module on high-voltage line, uses dual pathways synchronous acquisition pattern to described HV voltage signal and described corona electricity
Stream signal carries out synchronous acquisition, and utilizes optical fiber transmission line to be sent to photoelectricity under high-voltage line after being respectively converted into two optical signals
Modular converter；
Photoelectric conversion module under high-voltage line, is respectively converted into two signals of telecommunication by said two optical signal by opto-electronic conversion, and
It is transferred to host computer process；
Host computer, two signals of telecommunication carrying out photoelectric conversion module transmission under high-voltage line are received and calculate corona loss；With
And
Supply module, uses accumulator battery to power, it is ensured that described system can normally work.
System the most according to claim 1, on wherein said high-voltage line, voltage measurement module is positioned at the metal material of cylinder
In the protection bucket of material, and grading ring is installed at the two ends of described protection bucket.
System the most according to claim 1, on wherein said high-voltage line, voltage measurement module is arranged on high tension generator
Rear end.
System the most according to claim 1, on wherein said high-voltage line, voltage measurement module includes: voltage transformer, ripple
Fractal transform device and opto-electronic conversion transmitter group；The primary winding series connection of wherein said voltage transformer accesses high-voltage alternating line
Road, secondary coil accesses Wave shape changing device and opto-electronic conversion transmitter, the high-tension electricity that measurement is obtained by described voltage transformer
Piezoelectric signal is converted to optical signal by opto-electronic conversion transmitter and transmits to high-voltage line data acquisition module.
System the most according to claim 1, wherein said electric resistance sensor is arranged on data acquisition module on high-voltage line
On same position on high-voltage line, and described electric resistance sensor and high-voltage line, data acquisition module is installed in protection bucket
In, reduce the complex electromagnetic environment impact on corona current signal that high-voltage alternating circuit produces.
System the most according to claim 1, on wherein said high-voltage line, data acquisition module includes: capture card, and photoelectricity turns
Parallel operation and control circuit plate；Wherein said control circuit plate is the hinge that on high-voltage line, data acquisition module block device connects, to height
On line ball, the state of data acquisition module block device is controlled, and described optical-electrical converter will be transferred to height by optical fiber transmission line
On line ball, two optical signals of data acquisition module are converted to two signals of telecommunication and transmit to capture card.
System the most according to claim 6, collect two signals of telecommunication are passed through photoelectricity by wherein said capture card respectively
After being converted to two optical signals, descend into photoelectric conversion module under high-voltage line by optical fiber transmission line.
System the most according to claim 1, on wherein said high-voltage line, data acquisition module passes through described optical fiber transmission line
Road is connected with photoelectric conversion module under described high-voltage line.
9. a corona loss measuring method for HVAC power transmission line, described method includes:
Supply module uses accumulator battery to be powered system, it is ensured that described system can normally work；
The HV voltage signal that on high-voltage line, voltage measuring transformer is obtained by voltage measurement module utilizes optical fiber transmission line real
Time transmission to data acquisition module on high-voltage line；
Electric resistance sensor is utilized to measure and transmit data acquisition module to high-voltage line to corona current signal；
On high-voltage line, data acquisition module carries out synchronous acquisition to described HV voltage signal and described corona current signal, and divides
Optical fiber transmission line is utilized to be sent to photoelectric conversion module under high-voltage line after not being converted to two optical signals；
Under high-voltage line, said two optical signal is respectively converted into two signals of telecommunication by opto-electronic conversion by photoelectric conversion module, and passes
It is defeated by host computer to process；And
Two signals of telecommunication that photoelectric conversion module transmission under high-voltage line is come by host computer are received and calculate corona loss.
Method the most according to claim 9, on wherein said high-voltage line, voltage measurement module is arranged on high tension generator
Rear end.
11. methods according to claim 9, on wherein said high-voltage line, voltage measurement module is positioned at the metal material of cylinder
In the protection bucket of material, and grading ring is installed at the two ends of described protection bucket.
12. methods according to claim 9, on wherein said high-voltage line, voltage measurement module includes: voltage transformer, ripple
Fractal transform device and opto-electronic conversion transmitter group；The primary winding series connection of wherein said voltage transformer accesses high-voltage alternating line
Road, secondary coil accesses Wave shape changing device and opto-electronic conversion transmitter, the voltage electricity that measurement is obtained by described voltage transformer
Signal is converted to optical signal by opto-electronic conversion transmitter and transmits to high-voltage line data acquisition module.
13. methods according to claim 9, the series connection of wherein said electric resistance sensor accesses in HVAC power transmission line.
14. methods according to claim 9, on wherein said high-voltage line, data acquisition module uses dual pathways synchronous acquisition
Pattern.
15. methods according to claim 9, wherein said electric resistance sensor is arranged on data acquisition module on high-voltage line
On same position on high-voltage line, and described electric resistance sensor and high-voltage line, data acquisition module is installed in protection bucket
In, reduce the complex electromagnetic environment impact on corona current signal that high-voltage alternating circuit produces.
16. methods according to claim 9, on wherein said high-voltage line, data acquisition module includes: capture card, and photoelectricity turns
Parallel operation and control circuit plate；Wherein said control circuit plate is the hinge that on high-voltage line, data acquisition module block device connects, to height
On line ball, the state of data acquisition module block device is controlled, and described optical-electrical converter will be transferred to height by optical fiber transmission line
On line ball, the optical signal of data acquisition module is converted to the signal of telecommunication and transmits to capture card.
17. methods according to claim 16, collect two signals of telecommunication are passed through light by wherein said capture card respectively
After electricity is converted to two optical signals, descend into photoelectric conversion module under high-voltage line by optical fiber transmission line.
18. methods according to claim 9, on wherein said high-voltage line, data acquisition module passes through described optical fiber transmission line
Road is connected with photoelectric conversion module under described high-voltage line.
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