CN206470386U - A kind of voltage sensor of suitable substation field measurement - Google Patents

A kind of voltage sensor of suitable substation field measurement Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
voltage
low
signal
capacitance
transmission unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201720161444.2U
Other languages
Chinese (zh)
Inventor
李平林
李顺福
张国荣
陈建鹏
任灵
姚斌
张宝
王晓林
王志国
刘前元
李振华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JINCHANG POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
State Grid Corp of China SGCC
China Three Gorges University CTGU
State Grid Gansu Electric Power Co Ltd
Original Assignee
JINCHANG POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
State Grid Corp of China SGCC
China Three Gorges University CTGU
State Grid Gansu Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JINCHANG POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co, State Grid Corp of China SGCC, China Three Gorges University CTGU, State Grid Gansu Electric Power Co Ltd filed Critical JINCHANG POWER SUPPLY Co OF STATE GRID GANSU ELECTRIC POWER Co
Priority to CN201720161444.2U priority Critical patent/CN206470386U/en
Application granted granted Critical
Publication of CN206470386U publication Critical patent/CN206470386U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

A kind of voltage sensor of suitable substation field measurement
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.
CN201720161444.2U 2017-02-22 2017-02-22 A kind of voltage sensor of suitable substation field measurement Active CN206470386U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720161444.2U CN206470386U (en) 2017-02-22 2017-02-22 A kind of voltage sensor of suitable substation field measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720161444.2U CN206470386U (en) 2017-02-22 2017-02-22 A kind of voltage sensor of suitable substation field measurement

Publications (1)

Publication Number Publication Date
CN206470386U true CN206470386U (en) 2017-09-05

Family

ID=59708477

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720161444.2U Active CN206470386U (en) 2017-02-22 2017-02-22 A kind of voltage sensor of suitable substation field measurement

Country Status (1)

Country Link
CN (1) CN206470386U (en)

Similar Documents

Publication Publication Date Title
CN201373895Y (en) Online monitoring device of zinc oxide arrester (MOA)
CN105277857B (en) A kind of bushing shell for transformer of monitoring on-line makes moist the method for defect
CN102156218B (en) Device and method for measuring voltage of noncontact charge induced high-voltage transmission line
CN107144732B (en) User-side harmonic source localization method based on lumped power
CN103293507B (en) The online test method of current transformer error
CN102175923A (en) Transmission line dynamic loss measurement system and method
CN201716355U (en) Electronic current and voltage transformer for 126kVGIS
CN105223536B (en) A kind of portable electric meter field calibration system
CN106842098A (en) A kind of voltage sensor of suitable substation field measurement
CN206470386U (en) A kind of voltage sensor of suitable substation field measurement
CN202886473U (en) 750-kV insulator detector for line hot-line work
CN103337905A (en) Digitalized protection and measuring/control device integrated with metering function
CN206460103U (en) Transformer monitors calibration equipment on-line
CN205643476U (en) Outdoor zero sequence and phase sequence voltage measurement device
CN204719222U (en) A kind of portable electronic piece formula current transformer calibration device
CN106771505A (en) Single-phase overhead transmission line of electricity phase voltage method for self-calibrating based on series capacitance
CN203941200U (en) A kind of metering units can charged for replacement high-voltage electric energy meter
CN204203449U (en) The error testing system of accurate high-tension current inductor and this mutual inductor
CN108878115A (en) A kind of 10kV post-mounted high pressure Integral metering device
CN109521264A (en) A kind of digital zero sequence current mutual inductor of on-pole switch
CN204596615U (en) A kind of high accuracy number amount exports electronic current mutual inductor
CN207601164U (en) Electric safety system residual current monitoring module
CN201126631Y (en) 6/10kV vertical compression type energy-saving high-voltage measuring box
CN204964744U (en) On --spot calibration system of portable electric energy meter
CN201886067U (en) Online voltage harmonic monitoring system for wind farms

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant