CN202230858U - PCB (printed circuit board) type Rogowski coil current transformer - Google Patents
PCB (printed circuit board) type Rogowski coil current transformer Download PDFInfo
- Publication number
- CN202230858U CN202230858U CN2011203002617U CN201120300261U CN202230858U CN 202230858 U CN202230858 U CN 202230858U CN 2011203002617 U CN2011203002617 U CN 2011203002617U CN 201120300261 U CN201120300261 U CN 201120300261U CN 202230858 U CN202230858 U CN 202230858U
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- rogowski coil
- pcb
- conversion device
- coil
- power supply
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Abstract
The utility model relates to a PCB (printed circuit board) type Rogowski coil current transformer. The transformer comprises a PCB type Rogowski coil, an energy-acquiring coil, a data acquisition system, a first photoelectricity conversion device, a suspension type power supply, a combination unit and a photocell, wherein the PCB type Rogowski coil and the energy-acquiring coil are respectively sleeved on a power distribution network line and used for measuring the current in the power distribution network line; the data acquisition system is connected with the PCB type Rogowski coil; the first photoelectricity conversion device is connected with the data acquisition system; the suspension type power supply is respectively connected with the data acquisition system, the photoelectricity conversion device and the energy-acquiring coil; the combination unit is connected with the first photoelectricity conversion device through a second photoelectricity conversion device; and the photocell is respectively connected with the first photoelectricity conversion device, the second photoelectricity conversion device and the suspension type power supply. The PCB type Rogowski coil current transformer provided by the utility model has the following advantages that the problems of a current dead zone and awakening time do not exist in a mixed power supply system, and the continuous stability requirement of an active electronic mutual inductor on power supply work can be met.
Description
Technical field
The utility model relates to a kind of coil current instrument transformer, especially relates to a kind of PCB type Rogowski coil current instrument transformer.
Background technology
At present, current transformer commonly used is an electromagnetic current transducer, owing to there is iron core, under the Super-Current Measurement situation, is prone to the magnetic saturation phenomenon, causes the distortion of secondary signal output waveform, and then can't realize the accurate measurement to big electric current.The power supply supply of active electronic current transformer higher-pressure region circuit is the emphasis and the difficult point problem of research in addition.Power supply is suspended in the higher-pressure region and low-pressure area does not have any electromagnetic connection, is difficult to obtain high-power intake continuously and the reliability that has influence on the current transformer long-term work.
The utility model content
The utility model mainly is to solve the existing in prior technology technical problem; The problem that provides a kind of hybrid power source system not have electric current dead band and wakeup time can satisfy a kind of PCB type Rogowski coil current instrument transformer of active electronic instrument transformer to the continous-stable property requirement of power work.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of PCB type Rogowski coil current instrument transformer is characterized in that, comprises being set in respectively being used to measure the PCB type Rogowski coil of power distribution network line current on the power distribution network circuit and getting the ability coil; Be used to gather the data acquisition system that the secondary voltage signal of PCB type Rogowski coil output links to each other with PCB type Rogowski coil; First photoelectric converting device that links to each other with said data acquisition system; Respectively with said data acquisition system, photoelectric converting device and get the floated power supply that can coil links to each other; The merge cells that links to each other with said first photoelectric converting device through second photoelectric converting device; And the photocell that links to each other with said first photoelectric converting device, second photoelectric converting device and floated power supply respectively.
Therefore, the utlity model has following advantage: 1. reasonable in design, simple in structure and complete practicality; 2. there is not the problem of electric current dead band and wakeup time in hybrid power source system, can satisfy the continous-stable property requirement of active electronic instrument transformer to power work.
Description of drawings
Fig. 1 is the general structure sketch map of the utility model embodiment;
Fig. 2 is the PCB Rogowski coil cascaded structure sketch map of the utility model embodiment;
Fig. 3 is the mixing energy supply structural representation of the utility model embodiment.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment:
Below will combine accompanying drawing and embodiment that the utility model is described further.
Referring to Fig. 1, be the structural representation of embodiment.It is made up of PCB type Rogowski coil, data acquisition system, photoelectric converting device, AC-battery power source and single-chip microcomputer.Shown in system be divided into three parts: higher-pressure region current sensing unit, the fiber optic transmission system of high and low pressure signal and communication, the signal processing unit of low-pressure area.PCB type Rogowski coil is installed on the power distribution network circuit; Utilize PCB type Rogowski coil to measure the current signal of bus in the high-pressure side; After the secondary voltage signal process data acquisition system sampling adjustment with coil output; Carry out data processing through Optical Fiber Transmission to the merge cells of low-pressure side, send to the second protection control appliance then.
Referring to Fig. 2, it is to connect through via hole between the double sided board upper and lower surface lead that manufacturing PCB type Rogowski coil is evenly arranged on the circuit board PCB type Rogowski coil through computer-aided design (CAD) software with printed conductor.Native system adopts one or more pairs of PCB type Rogowski coils to be connected in series and forms, and along with the increase of series connection pcb board, its coefficient of mutual inductance M also increases exponentially.When being connected in series PCB type Rogowski coil, two adjacent PCB coils adopt winding mode in the opposite direction, and promptly the electric direction of two adjacent windings (clockwise with counterclockwise) is opposite, reaches the purpose that suppresses outside electromagnetic interference.So just the effect with common Rogowski coil increase loop line is the same, and the induced voltage that the magnetic field of tested electric current produces in coil just in time superposes.Needn't make loop line in addition so utilize this structure.This connected mode helps reducing the distributed capacitance between the coil, the ability that intensifier coil is gathered induced signal, improves the signal to noise ratio of sensing head.
Referring to Fig. 3, be that energy supply of current transformer laser and online getting can formula hybrid power source system structure charts.There is the contradiction between power, life-span and the maintenance cost in the laser energy-provision way; Online getting can mode exist power, electric current dead band and wakeup time problem; And adopt the online mixing energy-provision way that can combine of getting of laser energy supply summation current transformer, can solve the continous-stable property problem of power work.When electrical network normally moves or when the transient process, power supply adopts online the getting of current transformer mode to work; When electrical network switch on first or power network current less than current transformer online get can wake electric current up the time, adopt the work of laser full power energy-provision way; The control of laser energy supply power has the low-pressure area data processing unit dynamically to control according to current measurement value.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (1)
1. a PCB type Rogowski coil current instrument transformer is characterized in that, comprises sheathed respectively
On the power distribution network circuit, be used to measure the PCB type Rogowski coil of power distribution network line current and get the ability coil; Be used to gather the data acquisition system that the secondary voltage signal of PCB type Rogowski coil output links to each other with PCB type Rogowski coil; First photoelectric converting device that links to each other with said data acquisition system; Respectively with said data acquisition system, first photoelectric converting device and get the floated power supply that can coil links to each other; The merge cells that links to each other with said first photoelectric converting device through second photoelectric converting device; And the photocell that links to each other with said first photoelectric converting device, second photoelectric converting device and floated power supply respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203002617U CN202230858U (en) | 2011-08-18 | 2011-08-18 | PCB (printed circuit board) type Rogowski coil current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203002617U CN202230858U (en) | 2011-08-18 | 2011-08-18 | PCB (printed circuit board) type Rogowski coil current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230858U true CN202230858U (en) | 2012-05-23 |
Family
ID=46081436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203002617U Expired - Lifetime CN202230858U (en) | 2011-08-18 | 2011-08-18 | PCB (printed circuit board) type Rogowski coil current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230858U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730947A (en) * | 2013-12-04 | 2014-04-16 | 国家电网公司 | Hybrid type high voltage terminal energy supply system |
| CN104614602A (en) * | 2015-01-07 | 2015-05-13 | 国家电网公司 | Online monitoring device for arrester |
| CN107870268A (en) * | 2016-09-26 | 2018-04-03 | 南京南瑞继保电气有限公司 | A kind of centralized sampling system |
| CN111141972A (en) * | 2019-12-16 | 2020-05-12 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
-
2011
- 2011-08-18 CN CN2011203002617U patent/CN202230858U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730947A (en) * | 2013-12-04 | 2014-04-16 | 国家电网公司 | Hybrid type high voltage terminal energy supply system |
| CN104614602A (en) * | 2015-01-07 | 2015-05-13 | 国家电网公司 | Online monitoring device for arrester |
| CN104614602B (en) * | 2015-01-07 | 2017-08-04 | 国家电网公司 | A kind of arrester on-Line Monitor Device |
| CN107870268A (en) * | 2016-09-26 | 2018-04-03 | 南京南瑞继保电气有限公司 | A kind of centralized sampling system |
| CN111141972A (en) * | 2019-12-16 | 2020-05-12 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
| CN111141972B (en) * | 2019-12-16 | 2021-08-13 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |