CN106842098A - A kind of voltage sensor of suitable substation field measurement - Google Patents
A kind of voltage sensor of suitable substation field measurement Download PDFInfo
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- CN106842098A CN106842098A CN201710096791.6A CN201710096791A CN106842098A CN 106842098 A CN106842098 A CN 106842098A CN 201710096791 A CN201710096791 A CN 201710096791A CN 106842098 A CN106842098 A CN 106842098A
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- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 7
- 238000011017 operating method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000005350 ferromagnetic resonance Effects 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A kind of voltage sensor of suitable substation field measurement, including grading ring, primary voltage sensing unit, collection transmission unit, hoistable platform.The primary voltage sensing unit constitutes high-voltage capacitance and low-voltage capacitance using plane-parallel capacitor, inside fills air, forms a kind of gas capacitor；The high-voltage capacitance is by 3 three die openings for the gas capacitor of 1.5m is constituted；Low-voltage capacitance is by 1 die opening for the gas capacitor of 0.04m is constituted；High-voltage capacitance and low-voltage capacitance are by partial pressure of connecting.Collection transmission unit is placed in low-voltage capacitance lower section, and both are connected by optical fiber.Collection transmission unit is connected in sequence by signal processing module, A/D modular converters, the parts of FPGA tri-.The signal that collection transmission unit is exported can give subsequent treatment terminal through Optical Fiber Transmission.The present invention is capable of achieving powered verification to electronic type voltage transformer, shortens check-verifying period, simplify operating procedure, it is to avoid the loss caused by power failure, improves the degree of accuracy and the reliability of electronic type voltage transformer on-line testing.
Description
Technical field
A kind of voltage sensor of suitable substation field measurement of the present invention, is related to power system measuring field.
Background technology
With the development of digital transformer substation and intelligent grid, traditional transformer due to exist ferromagnetic resonance, poor insulativity,
The shortcomings of narrow dynamic range, the demand for development of power network cannot be met.To adapt to the growth requirement of high power capacity, voltage levels,
Obtained more and more with the electronic type voltage transformer without magnetic saturation phenomenon, the advantage such as certainty of measurement is high, frequency response is wide
Pay attention to, the main development direction as power system measuring.However, in actual motion, the electronic type voltage transformer degree of accuracy
Off-gage phenomenon is more serious, it is therefore desirable to the verification of the degree of accuracy is carried out to it.Traditional transducer check mode is mostly offline school
Test, not only complex operation, check-verifying period is long, and loss of outage can be brought, it is unfavorable that the safe and stable operation of system is caused
Influence.Thus, to improve the degree of accuracy of transformer, it is ensured that safe and reliable, the economical operation of power network, it would be highly desirable to which studying one kind can
The sensor verified to electronic type voltage transformer is realized under circuit electriferous state.
Some scholars are had at present, and correlative study is expanded to electronic mutual inductor on-line testing aspect, though achieve certain
Success, but still suffer from many problems：Chinese patent " CN102645643A " devises a kind of online school of electronic type voltage transformer
Check system, however, due to possibility when use conventional electromagnetic voltage transformer is electrically accessed power network as standard mutual inductor, thus band
Ferromagnetic resonance can be produced, there is certain potential safety hazard, and when voltage class is higher, the size and weight of equipment will also become
Greatly, it is unfavorable for that on-line testing is used；Chinese patent " CN102401889A " proposes a kind of for electronic current mutual inductor
On-line testing method, but the method is not suitable for the verification of electronic type voltage transformer.
The content of the invention
For the deficiency that current electronic type voltage transformer calibration technology is present, the invention provides a kind of suitable transformer station
The voltage sensor of in-site measurement, it is small volume, lightweight using plane-parallel capacitor as primary voltage sensing unit；It is anti-dry
Immunity is good, without ferromagnetic resonance, capacitor integrally to outer closure, interior fill air, form a kind of gas capacitor.Capacitor includes
High-voltage capacitance and low-voltage capacitance two parts, by detecting that the voltage in low-voltage capacitance obtains primary voltage signal.Can be in circuit not
In the case of power-off, realize verification to the electronic type voltage transformer degree of accuracy, it is to avoid the loss and inconvenience caused by power failure,
Improve the reliability and economy of system.
The technical scheme that the present invention takes is：
A kind of voltage sensor of suitable substation field measurement, including grading ring, primary voltage sensing unit, collection transmission list
Unit, hoistable platform.The primary voltage sensing unit constitutes high-voltage capacitance and low-voltage capacitance using plane-parallel capacitor, inside fills sky
Gas, forms a kind of gas capacitor；The high-voltage capacitance is by 3 three die openings for the gas capacitor of 1.5m is constituted；It is low
Voltage capacitance is by 1 die opening for the gas capacitor of 0.04m is constituted；High-voltage capacitance and low-voltage capacitance are by partial pressure of connecting.
Collection transmission unit is placed in low-voltage capacitance lower section, and both are connected by optical fiber.
Collection transmission unit is connected in sequence by signal processing module, A/D modular converters, the parts of FPGA tri-.
The signal that collection transmission unit is exported can give subsequent treatment terminal through Optical Fiber Transmission.
Grading ring is used to connect plane-parallel capacitor and a wire.
Hoistable platform is positioned over the lower section of primary voltage sensing unit and collection transmission unit.
The hoistable platform is installed on dolly.
The signal processing module is used to be filtered the analog voltage signal of low-voltage capacitance output, harmonic carcellation signal
Interference, make signal become more to smooth；A/D modular converters are used to for the voltage signal of simulation to be converted to digital quantity signal；
FPGA realizes the frame format treatment of signal, makes final output be the digital quantity signal based on the agreements of IEC 61850.
The subsequent treatment terminal is combining unit, calibration equipment or relay protection device.
The plane-parallel capacitor includes high and low pressure electrode and insulating bar, and high and low pressure electrode is copper electrode, insulation
Action bars is made of silicon rubber.
The grading ring is copper grading ring.
A kind of electronic type voltage transformer method of calibration, primary voltage sensing unit constitutes high pressure using plane-parallel capacitor
Electric capacity and low-voltage capacitance, by detecting that the voltage in low-voltage capacitance obtains primary voltage signal；Primary voltage sensing unit passes through
Control hoistable platform is accessed or exits a wire, realizes the online acquisition of primary voltage signal.Primary voltage sensing unit
The voltage signal for exporting to collection transmission unit, collection transmission unit to be output as being assisted based on IEC 61850 by Optical Fiber Transmission
The digital quantity signal of view, it is exported can be through Optical Fiber Transmission to follow-up combining unit, calibration equipment or relay protection device.
A kind of electronic type voltage transformer method of calibration, primary voltage sensing unit and collection transmission unit are in hoistable platform
With the top of dolly, during on-line testing, the access of primary voltage sensing unit is realized by the height for adjusting hoistable platform or is exited
Wire, so as to obtain primary voltage signal.
A kind of voltage sensor of suitable substation field measurement of the present invention, it is single as once sensing using gas capacitor
Unit, as the change of the raising of voltage class its volume and weight is little, with small volume, lightweight, theory structure be simple, measurement
The advantages of high precision, additionally, the powered verification to electronic type voltage transformer can be realized, check-verifying period is shortened, simplify behaviour
Make step, it is to avoid the loss caused by power failure, improve the degree of accuracy and the reliability of electronic type voltage transformer on-line testing.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the voltage sensor of the suitable substation field measurement of the present invention.
Fig. 2 is grading ring schematic diagram of the present invention.
Fig. 3 is primary voltage sensing unit schematic diagram of the present invention.
Fig. 4 is present invention collection transmission unit module connection figure.
Fig. 5 is present invention collection transmission unit module equivalent circuit diagram.
Specific embodiment
As shown in Fig. 1 ~ Fig. 5, a kind of voltage sensor of suitable substation field measurement, including grading ring 1, primary voltage
Sensing unit 2, collection transmission unit 6, hoistable platform 7.
The primary voltage sensing unit 2 constitutes high-voltage capacitance 4 and low-voltage capacitance 5 using plane-parallel capacitor, inside fills sky
Gas, forms a kind of gas capacitor, and its volume and weight changes not when being improved with good insulating properties, and voltage class
Greatly, it is especially suitable for field-checking.The high-voltage capacitance 4 is by 3 three die openings for the gas capacitor of 1.5m is constituted；Low tension
Hold 5 by 1 die opening for the gas capacitor of 0.04m is constituted；High-voltage capacitance 4 and low-voltage capacitance 5 are by partial pressure of connecting.Work as high pressure
When power delivery circuit is 220kV, the voltage signal U produced in low-voltage capacitance 51About 4V, by detecting low-voltage capacitance 5 in
Voltage signal obtains primary voltage signal.Its structure and principle are simple, and small volume is lightweight, are capable of achieving powered verification, it is to avoid
Loss caused by power failure, improves the degree of accuracy and the economy of electronic type voltage transformer.
Plane-parallel capacitor is in series and is formed by 4 gas capacitor C1 ~ C4, partial pressure effect is played, when to high-voltage capacitance 4
High-field electrode apply excitation after, can produce voltage signal in low-voltage capacitance 5, it exports the adopting to low-pressure side through Optical Fiber Transmission
Collection transmission unit 6, signal transacting is carried out in transmission unit 6 is gathered, then can be through Optical Fiber Transmission to combining unit, verification platform
Or other reception devices carry out the Data Analysis Services of next step, message transmission rate and precision are improve.
Collection transmission unit 6 is placed in the lower section of low-voltage capacitance 5, and both are connected by optical fiber；
Collection transmission unit 6 is connected in sequence by signal processing module, A/D modular converters, the parts of FPGA tri-；At the signal
Reason module is used to be filtered the analog voltage signal of the output of low-voltage capacitance 5, and the interference of harmonic carcellation signal becomes signal
More smooth；A/D modular converters are used to for the voltage signal of simulation to be converted to digital quantity signal.FPGA realizes the frame format of signal
Treatment, makes final output be the digital quantity signal based on the agreements of IEC 61850, improves message transmission rate and the degree of accuracy.
The signal of the collection output of transmission unit 6 can be transferred to subsequent treatment terminal 11 through optical fiber 10.The subsequent treatment end
End 11 is combining unit, calibration equipment or relay protection device.
Grading ring 1 is used to connect plane-parallel capacitor and a wire；
Hoistable platform 7 is positioned over the lower section of primary voltage sensing unit 2 and collection transmission unit 6.Can be according to live line levels
Difference, on-line testing is realized by the height for adjusting hoistable platform 7, thus suitable for the online school to multiple voltage grade
Test.The hoistable platform 7 is installed on dolly 8.
The plane-parallel capacitor includes high-field electrode 3, low-field electrode and the part of insulating bar 9 three, high and low pressure electrode
It is copper electrode, with good electric conductivity and corrosion resistance, insulating bar 9 is made of silicon rubber, lightweight and insulating properties
Can be good, it is ensured that the overall anti-interference of capacitor.
The grading ring 1 is copper grading ring, with good electric conductivity, for connecting capacitor and a wire, this
It is outer to be used to improve the Electric Field Distribution around capacitor, make Electric Field Distribution more uniform, prevent point discharge from being done to test result
Disturb, improve the degree of accuracy of measurement.
A kind of electronic type voltage transformer method of calibration, primary voltage sensing unit 2 is constituted high using plane-parallel capacitor
Voltage capacitance 4 and low-voltage capacitance 5, by detecting that the voltage in low-voltage capacitance 5 obtains primary voltage signal；Primary voltage sensing unit
2 access or exit a wire by controlling hoistable platform 7, realize the online acquisition of primary voltage signal.Primary voltage is passed
The voltage signal that sense unit 2 is exported is output as based on IEC to collection transmission unit 6, collection transmission unit 6 by Optical Fiber Transmission
The digital quantity signal of 61850 agreements, its output can be transferred to follow-up combining unit, calibration equipment or relay protection through optical fiber 10
Equipment, carries out the Data Analysis Services of next step.
A kind of electronic type voltage transformer method of calibration, primary voltage sensing unit 2 and collection transmission unit 6 are flat in lifting
The top of platform 7 and dolly 8, during on-line testing, realizes that primary voltage sensing unit 2 is accessed by the height for adjusting hoistable platform 7
Or a wire is exited, so as to obtain primary voltage signal.It is easy to operate, it is capable of achieving the electronic type voltage to multiple voltage grade
The on-line testing of transformer.
Claims (8)
1. a kind of voltage sensor of suitable substation field measurement, including grading ring（1）, primary voltage sensing unit（2）, adopt
Collection transmission unit（6）, hoistable platform（7）；It is characterized in that：The primary voltage sensing unit（2）Using plane-parallel capacitor
Constitute high-voltage capacitance（4）And low-voltage capacitance（5）, air is inside filled, form a kind of gas capacitor；The high-voltage capacitance（4）By 3
Individual three gas capacitors are constituted；Low-voltage capacitance（5）It is made up of 1 gas capacitor；High-voltage capacitance（4）And low-voltage capacitance（5）
By partial pressure of connecting；Collection transmission unit（6）It is placed in low-voltage capacitance（5）Lower section, both are connected by optical fiber；Collection transmission unit
（6）It is connected in sequence by signal processing module, A/D modular converters, the parts of FPGA tri-；Collection transmission unit（6）The letter of output
Number can be through optical fiber（10）It is transferred to subsequent treatment terminal（11）；Grading ring（1）For connecting plane-parallel capacitor and a wire；
Hoistable platform（7）It is positioned over primary voltage sensing unit（2）With collection transmission unit（6）Lower section.
2. the voltage sensor that a kind of suitable substation field is measured according to claim 1, it is characterised in that：The lifting
Platform（7）It is installed on dolly（8）On.
3. the voltage sensor that a kind of suitable substation field is measured according to claim 1, it is characterised in that：The signal
Processing module is used for low-voltage capacitance（5）The analog voltage signal of output is filtered, the interference of harmonic carcellation signal, makes signal
Become more to smooth；A/D modular converters are used to for the voltage signal of simulation to be converted to digital quantity signal；FPGA realizes the frame of signal
Format analysis processing, makes final output be the digital quantity signal based on the agreements of IEC 61850.
4. the voltage sensor that a kind of suitable substation field is measured according to claim 1, it is characterised in that：It is described follow-up
Processing terminal（11）It is combining unit, calibration equipment or relay protection device.
5. the voltage sensor that a kind of suitable substation field is measured according to claim 1, it is characterised in that：It is described parallel
Plate capacitor includes high and low pressure electrode and insulating bar（9）, high and low pressure electrode is copper electrode, insulating bar（9）Using
Silicon rubber is made.
6. the voltage sensor that a kind of suitable substation field is measured according to claim 1, it is characterised in that：It is described to press
Ring（1）It is copper grading ring.
7. a kind of electronic type voltage transformer method of calibration, it is characterised in that：Primary voltage sensing unit（2）Using parallel-plate electricity
Container constitutes high-voltage capacitance（4）And low-voltage capacitance（5）, by detecting low-voltage capacitance（5）In voltage obtain primary voltage signal；
Primary voltage sensing unit（2）By controlling hoistable platform（7）A wire is accessed or exited, primary voltage signal is realized
It is online to obtain；Primary voltage sensing unit（2）The voltage signal for exporting gives collection transmission unit by Optical Fiber Transmission（6）, collection
Transmission unit（6）The digital quantity signal based on the agreements of IEC 61850 is output as, its output can be through optical fiber（10）It is transferred to follow-up
Combining unit, calibration equipment or relay protection device.
8. a kind of electronic type voltage transformer method of calibration, it is characterised in that：Primary voltage sensing unit（2）It is single with collection transmission
Unit（6）In hoistable platform（7）And dolly（8）Top, during on-line testing, by adjusting hoistable platform（7）Height realize one
Secondary voltage sensor unit（2）A wire is accessed or exits, so as to obtain primary voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096791.6A CN106842098A (en) | 2017-02-22 | 2017-02-22 | A kind of voltage sensor of suitable substation field measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096791.6A CN106842098A (en) | 2017-02-22 | 2017-02-22 | A kind of voltage sensor of suitable substation field measurement |
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| Publication Number | Publication Date |
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| CN106842098A true CN106842098A (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710096791.6A Pending CN106842098A (en) | 2017-02-22 | 2017-02-22 | A kind of voltage sensor of suitable substation field measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991642A (en) * | 2017-12-01 | 2018-05-04 | 三峡大学 | A kind of powered Compare System of voltage transformer error |
| CN108100960A (en) * | 2017-12-07 | 2018-06-01 | 国家电网公司 | Storage batteries of transformer substation parameter measurement vehicle |
| CN109085389A (en) * | 2018-08-13 | 2018-12-25 | 安徽硕日光电科技有限公司 | A kind of Intelligent voltage sensing device convenient for adjusting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445581A (en) * | 2011-11-17 | 2012-05-09 | 哈尔滨工业大学 | Capacitive voltage-division type self-calibration optical voltage transducer |
| CN102565608A (en) * | 2011-12-19 | 2012-07-11 | 甘肃省电力公司金昌供电公司 | Multipoint grounding seeking instrument of voltage transformer |
| CN104375112A (en) * | 2014-11-07 | 2015-02-25 | 三峡大学 | Voltage transformer online verifying system based on SF6 parallel-plate capacitor |
| CN104965122A (en) * | 2015-07-17 | 2015-10-07 | 三峡大学 | Automatic temperature compensation-type optical voltage measuring device based on circular electric field coupling structure |
| CN206470386U (en) * | 2017-02-22 | 2017-09-05 | 国网甘肃省电力公司金昌供电公司 | A kind of voltage sensor of suitable substation field measurement |
-
2017
- 2017-02-22 CN CN201710096791.6A patent/CN106842098A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445581A (en) * | 2011-11-17 | 2012-05-09 | 哈尔滨工业大学 | Capacitive voltage-division type self-calibration optical voltage transducer |
| CN102565608A (en) * | 2011-12-19 | 2012-07-11 | 甘肃省电力公司金昌供电公司 | Multipoint grounding seeking instrument of voltage transformer |
| CN104375112A (en) * | 2014-11-07 | 2015-02-25 | 三峡大学 | Voltage transformer online verifying system based on SF6 parallel-plate capacitor |
| CN104965122A (en) * | 2015-07-17 | 2015-10-07 | 三峡大学 | Automatic temperature compensation-type optical voltage measuring device based on circular electric field coupling structure |
| CN206470386U (en) * | 2017-02-22 | 2017-09-05 | 国网甘肃省电力公司金昌供电公司 | A kind of voltage sensor of suitable substation field measurement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991642A (en) * | 2017-12-01 | 2018-05-04 | 三峡大学 | A kind of powered Compare System of voltage transformer error |
| CN108100960A (en) * | 2017-12-07 | 2018-06-01 | 国家电网公司 | Storage batteries of transformer substation parameter measurement vehicle |
| CN109085389A (en) * | 2018-08-13 | 2018-12-25 | 安徽硕日光电科技有限公司 | A kind of Intelligent voltage sensing device convenient for adjusting |
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Application publication date: 20170613 |