CN206470386U - 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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- CN206470386U CN206470386U CN201720161444.2U CN201720161444U CN206470386U CN 206470386 U CN206470386 U CN 206470386U CN 201720161444 U CN201720161444 U CN 201720161444U CN 206470386 U CN206470386 U CN 206470386U
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- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 11
- 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
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000012795 verification Methods 0.000 abstract description 8
- 238000011017 operating method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 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
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- 238000009413 insulation Methods 0.000 description 1
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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 made up of 3 three die openings for 1.5m gas capacitor；Low-voltage capacitance is made up of 1 die opening for 0.04m gas capacitor；High-voltage capacitance and low-voltage capacitance pass through partial pressure of connecting.Collection transmission unit is placed in below low-voltage capacitance, 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 of collection transmission unit output can be transferred to subsequent treatment terminal through optical fiber.The utility model can realize the powered verification to electronic type voltage transformer, shorten check-verifying period, simplify operating procedure, 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.
Description
Technical field
A kind of voltage sensor of suitable substation field measurement of the utility model, 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 can not be met.For adapt to high power capacity, voltage levels growth requirement,
Obtained more and more with the electronic type voltage transformer without magnetic saturation phenomenon, the advantage such as measurement accuracy 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 can bring loss of outage, 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 to expanding correlative study in terms of electronic mutual inductor on-line testing, 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 on-line testing to use；Chinese patent " CN102401889A " proposes a kind of for electronic current mutual inductor
On-line testing method, but this method is not suitable for the verification of electronic type voltage transformer.
The content of the invention
The deficiency existed for current electronic type voltage transformer calibration technology, the utility model provides a kind of suitable change
The voltage sensor of power station in-site measurement, it is small volume, lightweight using plane-parallel capacitor as primary voltage sensing unit；
Anti-interference is good, without ferromagnetic resonance, capacitor integrally to outer closure, interior fill air, form a kind of gas capacitor.Capacitor
Including high-voltage capacitance and low-voltage capacitance two parts, by detecting that the voltage in low-voltage capacitance obtains primary voltage signal.Can be online
In the case that road is not powered off, realize verification to the electronic type voltage transformer degree of accuracy, it is to avoid loss caused by power failure and
Inconvenience, improves the reliability and economy of system.
The technical scheme that the utility model is taken is：
A kind of voltage sensor of suitable substation field measurement, including grading ring, primary voltage sensing unit, collection biography
Defeated unit, hoistable platform.The primary voltage sensing unit constitutes high-voltage capacitance and low-voltage capacitance using plane-parallel capacitor, interior
Air is filled, a kind of gas capacitor is formd；The high-voltage capacitance is by gas capacitor structure of 3 three die openings for 1.5m
Into；Low-voltage capacitance is made up of 1 die opening for 0.04m gas capacitor；High-voltage capacitance and low-voltage capacitance pass through partial pressure of connecting.
Collection transmission unit is placed in below low-voltage capacitance, 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 of collection transmission unit output can be transferred to subsequent treatment terminal through optical fiber.
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 that low-voltage capacitance is exported, harmonic carcellation signal
Interference, signal is become more smooth；A/D modular converters are used to the voltage signal of simulation being converted to digital quantity signal；
FPGA realizes the frame format processing of signal, and it is the digital quantity signal based on the agreements of IEC 61850 to make final output.
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
A wire is exited in the access of control hoistable platform, realizes the online acquisition of primary voltage signal.Primary voltage sensing unit
The voltage signal of output is transferred to collection transmission unit by optical fiber, and collection transmission unit is output as assisting based on IEC 61850
The digital quantity signal of view, its output can be transferred to follow-up combining unit, calibration equipment or relay protection device through optical fiber.
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, realize that primary voltage sensing unit is accessed or exited by adjusting the height of hoistable platform
Wire, so as to obtain primary voltage signal.
A kind of voltage sensor of suitable substation field measurement of the utility model, using gas capacitor as once passing
Feel unit, as the raising of voltage class its volume and weight changes little, with small volume, lightweight, theory structure it is simple,
The advantages of measurement accuracy is high, in addition, the powered verification to electronic type voltage transformer can be realized, shortens check-verifying period, simplifies
Operating procedure, it is to avoid the loss caused by power failure, improve electronic type voltage transformer on-line testing the degree of accuracy and can
By property.
Brief description of the drawings
Fig. 1 is the overall structure diagram for the voltage sensor that the utility model is adapted to substation field measurement.
Fig. 2 is the utility model grading ring schematic diagram.
Fig. 3 is the utility model primary voltage sensing unit schematic diagram.
Fig. 4 is that the utility model gathers transmission unit module connection figure.
Fig. 5 is that the utility model gathers transmission unit module equivalent circuit diagram.
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 with good insulating properties, and during voltage class raising, its volume and weight changes not
Greatly, it is especially suitable for field-checking.The high-voltage capacitance 4 is made up of 3 three die openings for 1.5m gas capacitor；Low tension
Hold 5 to be made up of for 0.04m gas capacitor 1 die opening；High-voltage capacitance 4 and low-voltage capacitance 5 pass through 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 in low-voltage capacitance 5
Voltage signal obtains primary voltage signal.Its structure and principle are simple, and small volume is lightweight, and powered verification can be achieved, 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 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, its output is transferred to adopting for low-pressure side through optical fiber
Collect transmission unit 6, signal transacting is carried out in collection transmission unit 6, combining unit, verification platform then can be transferred to through optical fiber
Or other reception devices carry out the Data Analysis Services of next step, improve message transmission rate and precision.
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-；The letter
Number processing module is used to be filtered the analog voltage signal that low-voltage capacitance 5 is exported, and the interference of harmonic carcellation signal makes signal
Become more smooth；A/D modular converters are used to the voltage signal of simulation being converted to digital quantity signal.FPGA realizes the frame of signal
Format analysis processing, it is the digital quantity signal based on the agreements of IEC 61850 to make final output, improves message transmission rate and accurate
Degree.
The signal that collection transmission unit 6 is exported can be transferred to subsequent treatment terminal 11 through optical fiber 10.The subsequent treatment is whole
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 circuit
The difference of height, on-line testing is realized by adjusting the height of hoistable platform 7, thus suitable for the online of multiple voltage grade
Verification.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
For 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, by controlling hoistable platform 7 to access or exit a wire, realize the online acquisition of primary voltage signal.Primary voltage is passed
The voltage signal that sense unit 2 is exported is transferred to collection transmission unit 6 by optical fiber, and collection transmission unit 6 is output as being based on IEC
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 adjusting the height of hoistable platform 7
Or a wire is exited, so as to obtain primary voltage signal.It is easy to operate, the electronic type voltage to multiple voltage grade can be achieved
The on-line testing of transformer.
Claims (6)
1. a kind of voltage sensor of suitable substation field measurement, including grading ring（1）, primary voltage sensing unit（2）, adopt
Collect 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, a kind of gas capacitor is formd；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）
Pass through partial pressure of connecting；Gather transmission unit（6）It is placed in low-voltage capacitance（5）Lower section, both are connected by optical fiber；Gather transmission unit
（6）It is connected in sequence by signal processing module, A/D modular converters, the parts of FPGA tri-；Gather 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 smooth；A/D modular converters are used to the voltage signal of simulation being converted to digital quantity signal；FPGA realizes the frame of signal
Format analysis processing, it is the digital quantity signal based on the agreements of IEC 61850 to make final output.
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）For 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）For copper grading ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720161444.2U CN206470386U (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 |
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| CN201720161444.2U CN206470386U (en) | 2017-02-22 | 2017-02-22 | A kind of voltage sensor of suitable substation field measurement |
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| CN206470386U true CN206470386U (en) | 2017-09-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842098A (en) * | 2017-02-22 | 2017-06-13 | 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 |
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2017
- 2017-02-22 CN CN201720161444.2U patent/CN206470386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842098A (en) * | 2017-02-22 | 2017-06-13 | 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 |
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