CN104764928B - A kind of Portable pulse heavy-current measuring device of suitable substation field - Google Patents
A kind of Portable pulse heavy-current measuring device of suitable substation field Download PDFInfo
- Publication number
- CN104764928B CN104764928B CN201510103949.9A CN201510103949A CN104764928B CN 104764928 B CN104764928 B CN 104764928B CN 201510103949 A CN201510103949 A CN 201510103949A CN 104764928 B CN104764928 B CN 104764928B
- Authority
- CN
- China
- Prior art keywords
- pulse
- main
- measuring device
- high current
- rogowski coil
- 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
Links
Abstract
A kind of Portable pulse heavy-current measuring device of suitable substation field, including pulse high current sensor, pulse high current sensor is connected by shielding line with digitized processing unit, and the output of digitized processing unit is optical signal form, is connected by optical fiber with photoelectricity transmission unit；Photoelectricity transmission unit is optical signal close to terminal processing units, its input signal, and output signal is electric signal, and the electric signal passes through USB transmission line access terminal processing unit.A kind of Portable pulse heavy-current measuring device of suitable substation field of the present invention, live mobility is strong, can carry out current measurement to the position that needs measure at any time, without interrupting the operation of tested device, the degree of accuracy is high.
Description
Technical field
A kind of Portable pulse heavy-current measuring device of suitable substation field of the present invention, for being filled to impulse magnetic field
Put the high frequency high currents such as discharge current, lightning impulse discharge current and realize measurement in real time.
Background technology
In order to test performance of the various kinds of equipment under high voltage, high current, especially transformer, breaker in power system
Etc. performance of the equipment under lightning impulse voltage, dash current, it is necessary to which these equipment are carried out with surge voltage and dash current examination
Test, to examine the insulating properties of equipment, heat resistance, mechanical performance etc. to meet defined require.In impulse magnetic field field, it is
The magnetic field of the tens of tesla's intensity of generation, it is also desirable to which electric discharge produces the pulse high current of dozens or even hundreds of kiloampere.In order to
Judge whether the working condition of surge voltage/current feedback circuit and impulse magnetic field device is normal, whether output signal meets will
Ask, it is necessary to which caused pulse high current in its course of work is accurately monitored.In addition, the output to this kind of device is carried out
Accurate measurements, including the parameters such as peak value, wave front time, wave rear time, half time to peak are monitored, control can also be coordinated
Device forms accurate feedback, ensures the various types of signal needed for the accurate output test of this kind equipment.
In order to accurately test the big electricity of pulse in surge voltage/current feedback circuit and impulse magnetic field device discharge process
Stream, there is an urgent need to develop efficiently and the pulse high current measuring system of safety.There are many enterprises and scientific research institutions to carry out at present
The research of this respect, the pulse high current measuring system that various soft and hardwares are combined also have obtained a certain degree of application.At present
Power equipment carry out pulse high current experiment when, typically carry out in laboratory environments, this test can not accurately reflect
The situation at scene, although causing equipment to pass through the test in laboratory, all kinds of failures still occur when running at the scene, such as
Lightning current causes situations such as guide rod deformation of transformer.Therefore, dash current examination is carried out to power equipment in substation field
Testing turns into a kind of study hotspot.Some scientific research institutions carry out the pulse high current generating means for being adapted to onsite application at present
Develop, have been achieved for certain achievement.Therefore, synchronous research is adapted to the pulse high current measurement dress of the high accuracy of onsite application
It is set to as urgent problem to be solved.
Patent CN1442700A proposes a kind of test device and method of nanosecond pulse high current, and the device utilizes photoelectricity
Multiplier tube test system measures discharge current waveform, with Rogowski coil and the amplitude of oscilloscope measurement discharge current.Patent
A kind of mixed photoelectric impulse current measurement system is devised in CN102539885A, it includes induction coil and optical fiber transmission mould
Block, measurable microampere order electric current, Measurement bandwidth are less than 0.1% up to 22MHz, nonlinearity.Patent CN103412167A is disclosed
A kind of coaxial Disc Shunt for recurrent pulse current measurement, the invention solve 1A~100A, 50Hz~200kHz
The problem of recurrent pulse current measurement degree of accuracy is not high.Patent CN101135702A proposes one kind and is based on flexible Rogowski lines
The impulse current measurement mechanism of circle, the measurement of pulse current is realized in the form of Rogowski coil combination analogue integrator.
However, above with respect to the measurement apparatus of pulse high current, the test of pulse high current under laboratory environment is mainly used in, and it is accurate
Exactness is not high, is typically only capable of reaching 0.1% degree of accuracy, and above-mentioned measurement apparatus can not realize the degree of accuracy in substation field
Self calibration, because can not just ensure accuracy of measurement.
The content of the invention
For accuracy of measurement existing for current pulse high current measurement apparatus it is not high, can not self calibration, be not suitable for it is existing
The problem of field uses, the present invention provide a kind of Portable pulse heavy-current measuring device of suitable substation field, and scene is removable
Dynamic property is strong, can carry out current measurement to the position that needs measure at any time, without interrupting the operation of tested device, the degree of accuracy is high.
The technical scheme that the present invention takes is：
A kind of Portable pulse heavy-current measuring device of suitable substation field, including pulse high current sensor, arteries and veins
Large current sensor to be rushed by shielding line with digitized processing unit to be connected, the output of digitized processing unit is optical signal form,
It is connected by optical fiber with photoelectricity transmission unit；For photoelectricity transmission unit close to terminal processing units, its input signal is optical signal, defeated
It is electric signal to go out signal, and the electric signal passes through USB transmission line access terminal processing unit.
The pulse high current sensor includes open type Rogowski coil, and open type Rogowski coil is as electric current
Sensing unit, obtained by detecting the output voltage of Rogowski coil by primary current signal therein.Open type
Rogowski coil, which need not disconnect measured conductor, easily can access or exit measured conductor, realize accurate pulse high current
Measurement.
The pulse high current sensor includes main Rogowski coil and two pairs of correcting coils.Main Rogowski coil is used
In the detection to measured pulse high current, two pairs of correcting coils are used to carry out the position of main Rogowski coil and opening air gap
Calibration, ensure during measurement main Rogowski coil plane perpendicular to measured conductor, measured conductor from main Rogowski coil center
Pass through and main Rogowski coil tight closure, in the absence of opening air gap, ensure the degree of accuracy of measurement.
The main Rogowski coil and two pairs of correcting coils use printed circuit board (PCB)（PCB）Fabrication techniques form, body
Product is small, weight is no more than 2kg, is especially suitable for onsite application.PCB technologies ensure that being uniformly distributed for coil neutralization circle, be advantageous to
Reduce external interference.
The pulse high current sensor, digitized processing unit are in metal shielding setup, advantageously reduce change
The electromagnetic interference at power station scene, reduces measurement error.
The terminal processing units are industrial computer or notebook computer, for the signal of reception is carried out data analysis,
Parameter is shown and data preserve etc..
A kind of Portable pulse heavy-current measuring device of suitable substation field of the present invention, technique effect are as follows：
1）, pulse high current sensor include main Rogowski coil and two pairs of correcting coils.Utilize two pairs of correcting coils
Realize the correction of main Rogowski coil accuracy of measurement.Before formal measurement, first with two pairs of correcting coils to master
The installation site and opening air gap of Rogowski coil are corrected, and ensure measured conductor perpendicular to main Rogowski coil plane
And through its center, ensure main Rogowski coil tight closure, so as to improve accuracy of measurement.
2）, digitized processing unit be installed on together with pulse high current sensor in metal shielding setup, can effectively drop
The interference of low external electromagnetic field.The signal of main Rogowski coil and two pairs of correcting coils is carried out A/D by digitized processing unit
Conversion is changed into digital quantity, then carries out framing processing through single-chip microcomputer, and pass through the downward Primary Transmit of optical fiber.Digitized processing unit
The digitlization of analog signal is realized using high-precision 24 A/D converters, digitized signal is directly entered at single-chip microcomputer
Reason and transmission.
3）, main Rogowski coil in pulse high current sensor and two pairs of correcting coils use PCB fabrication techniques
Form, it is small volume, in light weight, it is especially suitable for onsite application.
4）, photoelectricity transmission unit receive the optical signal from digitized processing unit, transmission means uses optical fiber.Optical fiber passes
Defeated strong antijamming capability, the degree of accuracy of signal transmission is ensure that in substation field, is reduced because electromagnetic interference causes
The bit error rate and frame losing phenomenon.
5）, apparatus of the present invention, live mobility is strong, can carry out current measurement to the position that measure of needs at any time, without
Interrupt the operation of tested device；The degree of accuracy is high, can reach 0.05% degree of accuracy.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is the overlooking the structure diagram of the pulse high current sensor of apparatus of the present invention.
Fig. 3 is the dimensional structure diagram of the pulse high current sensor of apparatus of the present invention.
Embodiment
As shown in Fig. 1 ~ Fig. 3, a kind of Portable pulse heavy-current measuring device of suitable substation field, by the big electricity of pulse
The part structures such as flow sensor, digitized processing unit 3, photoelectricity transmission unit 4, terminal processing units 5 and metal shielding setup 9
Into.Pulse high current sensor is connected by shielding line 6 with digitized processing unit 3, and digitized processing unit 3 passes through optical fiber 7
It is connected with photoelectricity transmission unit 4, photoelectricity transmission unit 4 transmits a signal to terminal processing units 5 by USB transmission line 8.
In the present invention Rogowski coil be designed as opening form, without disconnect measured conductor can easily access or
Measured conductor is exited, realizes accurate pulse high current measurement.In order to ensure measurement the degree of accuracy, reduce substation field due to
Rogowski coil is eccentric, error caused by when drift angle, and this patent takes following technology.
Described pulse high current sensor is made up of main Rogowski coil 1 and two pairs of correcting coils 2, such as Fig. 2, Fig. 3
Shown, main Rogowski coil 1 and two pairs of correcting coils 2 are formed using PCB fabrication techniques, ensure the uniform of wire turn distribution
Property.Main Rogowski coil 1 is used for the detection to measured pulse high current, and two pairs of correcting coils 2 are used for main Rogowski lines
The position of circle and opening air gap are calibrated, and ensure the degree of accuracy of measurement.Two pairs of correcting coils 2 are in main Rogowski coil 1
Present it is symmetrical, when Primary Conductor is perpendicular to the plane of main Rogowski coil 1 and by its center, due to symmetry,
The output of two pairs of correcting coils is cancelled out each other, output zero；If there is situations such as eccentric in main Rogowski coil 1, two pairs
The output of correcting coil 2 is not zero, and the size of eccentric error is can determine whether according to its output, if error exceedes certain limit,
Remind staff to adjust the installation site of pulse high current sensor, ensure that its installation site is correct.When main Rogowski lines
The closure of circle 1 is not close, that is, when opening air gap be present, can destroy the symmetry of two pairs of correcting coils, and its output is not zero, so as to
To judge that coil closure is not close, staff is prompted to re-close main Rogowski coil 1.
Two pairs of correcting coils 2 include four single square coils, and the wire turn distribution on each coil is completely the same, and four
Individual individually coil is symmetric in main Rogowski coil 1, and four coils are on four summits of square.It is each
The center that the main plane of Rogowski coil 1 is passed through to the line of coil plane.
The present invention devises two pairs of correcting coils 2 in the plane of main Rogowski coil 1, is exported by these two pair coil
The comparison of signal, carries out the self calibration of the main coil degree of accuracy first before formal measurement, and this self calibration mode can make entirely to fill
The control errors put are within 0.05%.
Pulse high current sensor and digitlization processing unit 3 are in metal shielding setup 9.Pulse high current senses
The central axis of device overlaps with the axis of metal shielding setup 9, and digitized processing unit 3 is located at the side of metal shielding setup 9
In semicircle, ensure to have an impact circuit therein during folding.
The optical signal that photoelectricity transmission unit 4 transmits digitized processing unit 3 carries out certain processing, and is converted to suitable
The electric signal that USB transmission line 8 transmits, is transmitted to terminal processing units 5 by USB transmission line 8.Terminal processing units 5 are industry control
Machine or notebook computer, the main function of terminal processing units 5 are that the data of pulse high current sensor output are analyzed
Calculate.
The digitized processing unit 3 uses the ADS1216 of 24 as A/D converter, by pulse high current sensor
Analog output be accurately converted to digital quantity, be then transferred to photoelectricity transmission unit 4.Photoelectricity transmission unit 4 uses
The optical signal received is converted into electric signal by HFBR2412, and is transmitted by USB transmission line 8.
The metal shielding setup 9 is made using aluminum alloy materials.Such as Fig. 1, whole screening arrangement is designed as being open
Formula, cylindrical structure is externally rendered as, is made up of two semicylinders, there is opening centre, in that context it may be convenient to it is enterprising to be clipped in conductor
Row measurement.
A kind of Portable pulse heavy-current measuring device of suitable substation field of the present invention, PCB skills are based on due to using
The Rogowski coil of art has small volume, in light weight, advantages of simple structure and simple, fitted very much as pulse high current sensor
Onsite application is closed, mobility is strong.Meanwhile the sensor based on Rogowski coil has measurement bandwidth, dynamic range big
The advantages of, it is adapted to the pulse high current signal for measuring high frequency.
Claims (6)
1. a kind of Portable pulse heavy-current measuring device of suitable substation field, including pulse high current sensor, it is special
Sign is；Pulse high current sensor passes through shielding line（6）With digitized processing unit（3）It is connected, digitized processing unit（3）
Pass through optical fiber（7）With photoelectricity transmission unit（4）It is connected, photoelectricity transmission unit（4）Pass through USB transmission line（8）Transmit a signal to
Terminal processing units（5）；Pulse high current sensor is by main Rogowski coil（1）With two pairs of correcting coils（2）Form, it is main
Rogowski coil（1）For the detection to measured pulse high current, two pairs of correcting coils（2）For to main Rogowski coil
Position and opening air gap calibrated, two pairs of correcting coils（2）Comprising four single square coils, on each square coil
Wire turn distribution it is completely the same, and four single square coils are in main Rogowski coil（1）On be symmetric, four lists
Only square coil is on four summits of square, and the line of each square shaped coil plane passes through main Rogowski coil
（1）The center of plane.
2. a kind of Portable pulse heavy-current measuring device of suitable substation field, its feature exist according to claim 1
In the main Rogowski coil（1）, two pairs of correcting coils（2）Use printed circuit board (PCB)（PCB）Fabrication techniques form.
3. a kind of Portable pulse heavy-current measuring device of suitable substation field, its feature exist according to claim 1
In the pulse high current sensor, digitized processing unit（3）It is in metal shielding setup（9）It is interior.
4. a kind of Portable pulse heavy-current measuring device of suitable substation field, its feature exist according to claim 3
In the metal shielding setup（9）For open type structure.
5. a kind of Portable pulse heavy-current measuring device of suitable substation field, its feature exist according to claim 1
In the terminal processing units（5）For industrial computer or notebook computer.
A kind of 6. Portable pulse Super-Current Measurement dress of suitable substation field as described in any one in claim 1 ~ 5
Put, it is characterised in that：It is real for the high frequency high current to impulse magnetic field device discharge current or lightning impulse discharge current
When measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103949.9A CN104764928B (en) | 2015-03-10 | 2015-03-10 | A kind of Portable pulse heavy-current measuring device of suitable substation field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103949.9A CN104764928B (en) | 2015-03-10 | 2015-03-10 | A kind of Portable pulse heavy-current measuring device of suitable substation field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104764928A CN104764928A (en) | 2015-07-08 |
| CN104764928B true CN104764928B (en) | 2017-11-10 |
Family
ID=53646888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103949.9A Active CN104764928B (en) | 2015-03-10 | 2015-03-10 | A kind of Portable pulse heavy-current measuring device of suitable substation field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104764928B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771477B (en) * | 2016-11-28 | 2020-09-01 | 国网福建省电力有限公司 | Large-caliber high-sensitivity high-voltage direct current cable leakage current detection sensor |
| CN106645861B (en) * | 2017-02-17 | 2020-11-10 | 三峡大学 | Online current transformer checking system based on pincerlike Rogowski coil |
| CN106950525B (en) * | 2017-03-17 | 2019-03-22 | 中国科学院电工研究所 | A kind of pulse low current calibrating installation |
| BE1026805B1 (en) | 2018-11-27 | 2020-06-30 | Phoenix Contact Gmbh & Co | Position compensated current measuring device |
| FR3134633B1 (en) * | 2022-04-14 | 2024-04-05 | Hager Electro Sas | Calibration method, calibration installation and assembly method of a current sensor for electrical switching equipment, associated current sensor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003065059A1 (en) * | 2002-01-30 | 2003-08-07 | Kabushiki Kaisha Bridgestone | Measured value output device, measured value monitor, current value output device, and current monitor |
| CN100538371C (en) * | 2007-11-05 | 2009-09-09 | 湖北省电力试验研究院 | Transmission line lightning stroke on-line monitoring system |
| CN102445588B (en) * | 2011-11-23 | 2015-08-19 | 中国人民解放军海军工程大学 | The gradual in short-term heavy-current measuring device of Based PC Type B Luo-coil |
| CN102539885A (en) * | 2011-12-31 | 2012-07-04 | 中国南方电网有限责任公司超高压输电公司 | Mixed photoelectric impulse current measurement system |
| CN204462244U (en) * | 2015-03-10 | 2015-07-08 | 三峡大学 | A kind of Portable pulse heavy-current measuring device of applicable substation field |
-
2015
- 2015-03-10 CN CN201510103949.9A patent/CN104764928B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104764928A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104764928B (en) | A kind of Portable pulse heavy-current measuring device of suitable substation field | |
| CN103792508A (en) | Error test system and method for digitized metering device | |
| CN102866375A (en) | System and method for calibrating receiving performance of partial-discharge ultrahigh frequency detection device | |
| CN103901384B (en) | Analog quantity and digital quantity outputting standard power source detection device and method | |
| CN101493508A (en) | Calibration test apparatus for extra-high voltage direct current transformer | |
| CN101770006A (en) | Novel method for checking electronic transducer | |
| WO2018018467A1 (en) | Method for calibrating short circuit test measurement system for electric appliance | |
| CN108318852A (en) | A kind of intelligent electric energy meter square wave influence test method | |
| CN104375112A (en) | Voltage transformer online verifying system based on SF6 parallel-plate capacitor | |
| CN104793039A (en) | Method for measuring overvoltage of electric power system power transmission line | |
| CN100543491C (en) | The accuracy test macro of electric energy meter electrical fast transient (eft) interference test | |
| CN204462244U (en) | A kind of Portable pulse heavy-current measuring device of applicable substation field | |
| CN201373912Y (en) | Calibration testing device for extra high-voltage DC current transformer | |
| CN105866576A (en) | Simulation detection system of intelligent transformer station secondary-side electric energy metering error influence, and detection analysis method | |
| CN203502581U (en) | AIS electronic transformer test system based on disconnecting switch switching-on and switching-off capacitive small current | |
| CN201859212U (en) | Novel calibration device of electronic type mutual inductor | |
| CN102680931B (en) | Calibrating device for grounding connection parameter testing systems | |
| CN103675746A (en) | High-voltage switch tester calibration device and calibration method | |
| CN102419428A (en) | Integral calibrating method of radio interference measuring device | |
| CN207232368U (en) | A kind of inspection circuit of the extra-high video sensor effective height of partial discharge of transformer | |
| CN206038784U (en) | Live line measurement zinc oxide arrester's wireless tester | |
| CN115436869A (en) | Wireless electric sensor, electric parameter measurement calculation device, method and system | |
| CN202583442U (en) | Calibrating apparatus for grounding device characteristic parameter test system | |
| JPH0216083B2 (en) | ||
| CN105425117A (en) | UHF partial discharge sensor accuracy detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Yuehua Inventor after: Li Zhenhua Inventor after: Yan Suhong Inventor after: Zhao Shuang Inventor after: Li Qiuhui Inventor after: Li Zhenxing Inventor after: Xu Yanchun Inventor before: Li Zhenhua Inventor before: Yan Suhong Inventor before: Huang Yuehua Inventor before: Li Zhenxing Inventor before: Xu Yanchun |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210325 Address after: 443100 No.10 Pinghu Avenue, Yiling District, Yichang City, Hubei Province Patentee after: Yichang light source Electric Co.,Ltd. Address before: 443002 No. 8, University Road, Yichang, Hubei Patentee before: CHINA THREE GORGES University |
|
| TR01 | Transfer of patent right |