CN102403116A - Online energy supply method for high-voltage side of electronic current transformer - Google Patents
Online energy supply method for high-voltage side of electronic current transformer Download PDFInfo
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- CN102403116A CN102403116A CN2011103721766A CN201110372176A CN102403116A CN 102403116 A CN102403116 A CN 102403116A CN 2011103721766 A CN2011103721766 A CN 2011103721766A CN 201110372176 A CN201110372176 A CN 201110372176A CN 102403116 A CN102403116 A CN 102403116A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 230000006641 stabilisation Effects 0.000 claims description 14
- 238000011105 stabilization Methods 0.000 claims description 14
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011162 core material Substances 0.000 claims description 3
- 229910000889 permalloy Inorganic materials 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000036541 health Effects 0.000 claims description 2
- 230000000474 nursing effect Effects 0.000 claims 1
- 230000003750 conditioning effect Effects 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
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Abstract
The invention discloses an online energy supply method for a high-voltage side of an electronic current transformer, which comprises the following steps: the energy-obtaining current transformer module obtains energy from a bus, and provides stable voltage for a signal conditioning at the high-voltage side of the electronic current transformer and an optical transmitter after passing through the power voltage stabilizing circuit module.
Description
Technical field
The present invention relates to the online energy supply method in a kind of electronic current mutual inductor high-pressure side.
Background technology
Online the getting in electronic current mutual inductor high-pressure side can mainly contain earial drainage and current limliting dual mode at present.The earial drainage mode mainly is to get and can increase an auxiliary winding on the coil, managing the switching of controlling auxiliary winding through a CMOS; Current-limiting mode is before the rectifying and voltage-stabilizing module, to seal in a current limliting assembly.
No matter be earial drainage or current-limiting mode, when electric current is big, from bus, obtained too much energy, the release of energy all will bring the components and parts problems of excessive heat.
Summary of the invention
The technical problem that the present invention mainly solves provides the online energy supply method in a kind of electronic current mutual inductor high-pressure side; Get and current transformer module to be designed with saturated and slow saturated two coils of speed; From bus, obtain suitable energy; Can avoid releasing of energy, solve the overheated problem of components and parts.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: provide a kind of electronic current mutual inductor high-pressure side online energy supply method; Comprise: get ability current transformer module and power supply stabilization circuit module; Said getting can current transformer module be got ability from bus; Through after the said power supply stabilization circuit module for the conditioning of electronic current mutual inductor high-side signal provides stable voltage with optical transmitter, said getting can current transformer module comprise fast saturable inductor and slow saturable inductor, said fast saturable inductor and slowly the saturable inductor differential concatenation for the power supply stabilization circuit module energy is provided.
In preferred embodiment of the present invention, when being respectively applied for little electric current and big electric current with slow saturable inductor, said fast saturable inductor gets ability from bus.
In preferred embodiment of the present invention, said fast saturable inductor core material is a permalloy.
In preferred embodiment of the present invention, have the air gap above the said slow saturable inductor iron core, the progress of the entering saturation condition unshakable in one's determination that slowed down.
In preferred embodiment of the present invention, be surrounded by one deck sheet copper on the said slow saturated and fast saturable inductor, be used for electrostatic screen.
In preferred embodiment of the present invention; Said power supply stabilization circuit module comprises: rectification circuit, start-up circuit and one-level voltage stabilizing circuit, DC chopper circuit, DC-DC translation circuit and pulse-width modulation circuit; Said start-up circuit links to each other with rectification circuit with the one-level voltage stabilizing circuit and for DC chopper circuit provides input voltage, and the transformation that said DC-DC translation circuit links to each other with pulse-width modulation circuit output voltage feeds back to start-up circuit and one-level voltage stabilizing circuit.
The invention has the beneficial effects as follows: the online energy supply method in electronic current mutual inductor of the present invention high-pressure side adopts slow saturated and fast saturated two kinds of coils to combine; Can guarantee that electronic current mutual inductor uses in very wide bus current scope; Effectively solved the overheated problem of components and parts; In addition, this energy supply method can adapt to adverse circumstances, with low cost and more safe and reliable and non-maintaining forever.
Description of drawings
Fig. 1 is that the online energy supply method in electronic current mutual inductor of the present invention high-pressure side is got ability current transformer module energy supply structural representation;
Fig. 2 is an electronic current mutual inductor of the present invention high-pressure side online energy supply method power supply stabilization circuit principle schematic;
Reference numeral is following: 1, get ability current transformer module 2, power supply stabilization circuit module.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1; The embodiment of the invention comprises: get ability current transformer module 1 and power supply stabilization circuit module 2; Get and current transformer module 1 to comprise fast saturable inductor and slow saturable inductor, be surrounded by one deck sheet copper on the slow saturated and fast saturable inductor, be used for electrostatic screen; Speed saturable inductor core material is a permalloy; It has higher magnetic flux density, when little electric current, can induce high voltage, and fast saturable inductor is that power supply stabilization circuit module 2 provides energy with slow saturable inductor differential concatenation.Get and current transformer module 1 to get ability from bus; Getting from bus through fast saturable inductor during little electric current can; When bus current increased gradually, fast saturable inductor progressed into dark saturation condition, and the effective energy that from bus, obtains is very low; Getting from bus through slow saturable inductor during big electric current can; Have the air gap above the slow saturable inductor iron core, the progress of the entering saturation condition unshakable in one's determination that slowed down, process power supply stabilization circuit module 2 backs are nursed one's health for the electronic current mutual inductor high-side signal and optical transmitter provides stable voltage.
See also Fig. 2; Power supply stabilization circuit 2 comprises full bridge rectifier, start-up circuit and one-level voltage stabilizing circuit, DC chopper circuit, pulse-width modulation circuit and DC-DC translation circuit; Get alternating voltage output dc voltage behind full bridge rectifier that the ability current sensor module induces from bus; The direct voltage of output is that DC chopper circuit provides input voltage through start-up circuit and one-level voltage stabilizing circuit, makes DC chopper circuit operate as normal and output+5V voltage, output+5V voltage passes through output-5V voltage behind the DC-DC translation circuit; The transformation of both output voltages feeds back to start-up circuit and one-level voltage stabilizing circuit by pulse-width modulation circuit
Be different from prior art; Electronic current mutual inductor of the present invention high-pressure side energy supply method adopts online energy supply method; In order to solve the components and parts problems of excessive heat; Get in the online energy supply method and can current transformer module adopt slow saturated and fast saturated two kinds of coils to combine, can guarantee that electronic current mutual inductor carries out work under the bus current of broad, and this energy supply method has and can adapt to adverse circumstances, advantage with low cost, more safe and reliable and non-maintaining forever.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. online energy supply method in electronic current mutual inductor high-pressure side; Comprise: get ability current transformer module and power supply stabilization circuit module; Said getting can current transformer module be got ability from bus; Through nursing one's health for the electronic current mutual inductor high-side signal after the said power supply stabilization circuit module and optical transmitter provides stable voltage; It is characterized in that said getting can current transformer module comprise fast saturable inductor and slow saturable inductor, said fast saturable inductor provides energy with slow saturable inductor differential concatenation for the power supply stabilization circuit module.
2. the online energy supply method in electronic current mutual inductor according to claim 1 high-pressure side is characterized in that, gets ability from bus when said fast saturable inductor is respectively applied for little electric current and big electric current with slow saturable inductor.
3. the online energy supply method in electronic current mutual inductor according to claim 1 high-pressure side is characterized in that, said fast saturable inductor core material is a permalloy.
4. the online energy supply method in electronic current mutual inductor according to claim 1 high-pressure side is characterized in that, has the air gap above the said slow saturable inductor iron core, the progress of the entering saturation condition unshakable in one's determination that slowed down.
5. the online energy supply method in electronic current mutual inductor according to claim 1 high-pressure side is characterized in that, is surrounded by one deck sheet copper on the said slow saturated and fast saturable inductor, is used for electrostatic screen.
6. the online energy supply method in electronic current mutual inductor according to claim 1 high-pressure side; It is characterized in that; Said power supply stabilization circuit module comprises: rectification circuit, start-up circuit and one-level voltage stabilizing circuit, DC chopper circuit, DC-DC translation circuit and pulse-width modulation circuit; Said start-up circuit links to each other with rectification circuit with the one-level voltage stabilizing circuit and for DC chopper circuit provides input voltage, and the transformation that said DC-DC translation circuit links to each other with pulse-width modulation circuit output voltage feeds back to start-up circuit and one-level voltage stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103721766A CN102403116A (en) | 2011-11-22 | 2011-11-22 | Online energy supply method for high-voltage side of electronic current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103721766A CN102403116A (en) | 2011-11-22 | 2011-11-22 | Online energy supply method for high-voltage side of electronic current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102403116A true CN102403116A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103721766A Pending CN102403116A (en) | 2011-11-22 | 2011-11-22 | Online energy supply method for high-voltage side of electronic current transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852694A (en) * | 2014-03-28 | 2014-06-11 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| CN103904697A (en) * | 2014-04-28 | 2014-07-02 | 国家电网公司 | Power draw-out method for electric transmission line |
| CN104950155A (en) * | 2014-03-25 | 2015-09-30 | 利思电气（上海）有限公司 | Self-powered high-accuracy active current sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510136A (en) * | 2011-10-29 | 2012-06-20 | 常熟市董浜镇华进电器厂 | On-line energy supply way on high-voltage side of electronic type current transformer |
-
2011
- 2011-11-22 CN CN2011103721766A patent/CN102403116A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510136A (en) * | 2011-10-29 | 2012-06-20 | 常熟市董浜镇华进电器厂 | On-line energy supply way on high-voltage side of electronic type current transformer |
Non-Patent Citations (1)
| Title |
|---|
| 彭长保: "电子式电流互感器高压侧在线功能研究", 《中国优秀硕士学位论文全文数据库 工程科技2辑》, 15 May 2009 (2009-05-15) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950155A (en) * | 2014-03-25 | 2015-09-30 | 利思电气（上海）有限公司 | Self-powered high-accuracy active current sensor |
| CN104950155B (en) * | 2014-03-25 | 2019-03-15 | 利思电气（上海）有限公司 | A kind of self-powered type high-precision active electric current sensor |
| CN103852694A (en) * | 2014-03-28 | 2014-06-11 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| CN103904697A (en) * | 2014-04-28 | 2014-07-02 | 国家电网公司 | Power draw-out method for electric transmission line |
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Application publication date: 20120404 |