CN101345128A - High potential side energy supplying device of active electronic type photoelectric current mutual inductor - Google Patents
High potential side energy supplying device of active electronic type photoelectric current mutual inductor Download PDFInfo
- Publication number
- CN101345128A CN101345128A CNA2008101126302A CN200810112630A CN101345128A CN 101345128 A CN101345128 A CN 101345128A CN A2008101126302 A CNA2008101126302 A CN A2008101126302A CN 200810112630 A CN200810112630 A CN 200810112630A CN 101345128 A CN101345128 A CN 101345128A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- links
- successively
- 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.)
- Granted
Links
Images
Abstract
The invention relates to an active electronic photoelectric current transformer high-voltage side power supply device, belonging to the field of power system technique; the device of the invention comprises a circuit A which consists of a first high-voltage energy storage coil, a first energy leakage protection circuit and a voltage processing circuit a which are sequentially connected one after another, a circuit B which consists of a second high-voltage energy storage coil, a second energy leakage protection circuit and a voltage processing circuit b which are sequentially connected one after another, and a laser component which is connected with the circuit B. The device of the invention has the advantages of small volume, compact structure, simple insulation encapsulation and safe usage, and can ensure the electronic transformer to work normally and continuously within an extremely great current range.
Description
Technical field
The invention belongs to technical field of power systems, particularly high pressure is got the structural design of energy equipment.
Background technology
In recent years, along with the development of digitizing technique, digital transformer substation becomes inevitable trend, and the research of its capital equipment electronic mutual inductor (being also referred to as photo-electricity mutual-inductor) also constantly makes progress, and electronic mutual inductor is divided into two kinds of active formula and passive types.Wherein active formula development is rapid, and there has been product in China at hanging net operation.Electronic mutual inductor directly reacts the variation of tested analog quantity with its light digital quantity output.According to the standard of International Electrotechnical Commission, the advantage of electronic current mutual inductor is: with the Rogowski coil is advantages such as the big electric current progress of disease that primary transducer is realized does not have magnetic saturation, frequency response range is wide, precision is high, transient characterisitics are good; There are not the accidents such as combustion explosion that the oil design has thoroughly avoided oil-filled mutual inductor to occur; The photoelectricity of high-low pressure part is isolated, and makes the Current Transformer Secondary open circuit may cause problems such as crisis equipment or personal safety not exist; Because insulation system is simple, in high pressure and superhigh pressure, reduced the comprehensive use cost of photo-electricity mutual-inductor.
The passive type sensing head partly adopts advanced optical sensing principle and passes the signal to the electronic mutual inductor of low potential side by optical fiber, because there is not the problem of design high-pressure side electronic circuit in sensing, the corresponding energy supply problem that does not also have circuit, but passive type transducer signal precision is not high.Active formula is meant that then sensing head partly adopts traditional sensing principle, only utilize the electronic mutual inductor of Optical Fiber Transmission data, because optical fiber is merely able to transmission of digital signals, so must carry out the conversion of analog quantity and digital quantity in the high-pressure side to the output signal of sensing head, this corresponding electronic circuit of necessary design of making use of momentum.Thereby also just having brought the energy supply problem of circuit, this is the difficult point and the key technology of active formula instrument transformer research.
A large amount of both at home and abroad developments facts have proved: compare with the passive type structure, active formula structure is easy to realize the high accuracy of product and stablize, is convenient to the standardization and industrialization of parts, so be a kind of organization plan that present industry is generally admitted.But active formula instrument transformer primary side, the acquisition methods of power supply but are technical barriers maximum in the development.
But existing energy supply technology, at bus current hour, the high pressure side-draw is supplied with on high-tension side electronic circuit work less than enough energy, adopt the laser energy-provision way in addition fully, because the laser energize is limited and want long-term work, its life-span remains to be tested, and is in the product running experiment stage.
Summary of the invention
The objective of the invention is to propose a kind of high potential side energy supplying device of active electronic type photoelectric current mutual inductor, can guarantee that electronic mutual inductor incessantly can operate as normal in very big current range for overcoming the weak point of prior art.
Operation principle of the present invention:
The present invention is directed to active formula electronic current mutual inductor high-pressure side energy-provision way; the duplicate supply mode has been proposed first; promptly adopt high pressure get can and the mode that combines of laser energy supply and two getting can coils, two let out can protective circuits and the high pressure of two voltage treatment circuit circuit get the energy mode.Laser energy supply and circuit B circuit are only given the power supply of guard signal treatment circuit; circuit A then needs to measuring-signal and the power supply of guard signal treatment circuit; like this; when the little electric current of bus; the guard signal treatment circuit can operate as normal; and when bus current is big; the high pressure energy taking device is measuring-signal and the power supply of guard signal treatment circuit; help reducing the required bus current of back-end processing circuit operate as normal like this; reduce the power consumption of laser energy supply; increase the life-span of laser energy supply, thereby guarantee the operation steady in a long-term of whole high-pressure side circuit.
Characteristics of the present invention:
1. laser energy supply and high pressure are got and can mode be matched, and make electronic mutual inductor not exist because of the too small inoperable problem of bus current, guarantee electronic mutual inductor no matter whether bus has the electric current can both operate as normal.
2. the design of high pressure side-draw energy line circle and special circuit Design of device are taken into account the minimum maximum two kinds of maximum conditions of bus current, to guarantee that the high pressure energy taking device by metastable output, overvoltage, superheating phenomenon do not occur.
3. little, the compact conformation of this device volume, insulation-encapsulated are simple, safe in utilization.
Beneficial effect of the present invention
1. laser energy supply and high pressure are got and can mode be matched, and have guaranteed the electronic mutual inductor non-stop run, do not exist bus from no current to the firing time problem that has the electric current process.
2. the design of high pressure side-draw energy line circle and special circuit Design of device have guaranteed that the instrument transformer device can operate as normal in very big current range, and have not had the obviously situation of heating.
Description of drawings
Fig. 1 is a high-pressure side of the present invention power supply device general structure schematic diagram.
Fig. 2 can protective circuit form structural representation for letting out among Fig. 1.
Fig. 3 is that the voltage treatment circuit is formed structural representation among Fig. 1.
Fig. 4 is the laser energy supply circuit structural representation of this device.
Embodiment
The high potential side energy supplying device of active electronic type photoelectric current mutual inductor that the present invention proposes is described with reference to the accompanying drawings as follows:
The high potential side energy supplying device of active electronic type photoelectric current mutual inductor general structure that the present invention proposes as shown in Figure 1; This device comprise by first high pressure that links to each other successively get can coil, second let out can protective circuit, the circuit A that forms of voltage treatment circuit a; by second high pressure that links to each other successively get can coil, second let out can protective circuit, the circuit B that forms of voltage treatment circuit b, an and laser assembly that links to each other with circuit B.
Operation principle of the present invention:
Respectively get and to gather electric flux on the bus by electromagnetic induction by coil, can unnecessary energy be discharged protective circuit by letting out, and keep output voltage less than 25V; Voltage treatment circuit a rectification, filtering are passed through in the output of letting out the energy protective circuit among the circuit A, processing such as voltage transitions, voltage stabilizing and filtering, and the voltage of circuit A output+5V is supplied with the signal processing circuit of rear end; Circuit B output+5.2V links to each other with the corresponding interface of voltage treatment circuit b.The output of letting out the energy protective circuit of this circuit B is by after voltage treatment circuit b rectification, filtering and the voltage transitions; with laser assembly output+5.2V and voltage treatment circuit a output+5.2V converges; after voltage stabilizing, filtering, output+5V voltage is supplied with the back end signal treatment circuit.
The treatment circuit that the present invention removes laser assembly is positioned over inside and outside the control machine room of low-pressure side, and miscellaneous part all is positioned in the on high-tension side sensing head of electronic current mutual inductor.
Each parts example structure of the present invention and function are described in detail as follows:
It is the loop coil that is made of the ultramicro-crystal alloy magnetic core that of the present invention first, second got what can coil all adopt, is mounted on the bus, as shown in Figure 1.It is suitable that the sectional area of magnetic core ring is selected, and sectional area is too little, and electric current hour is just got less than enough energy, his big words of sectional area, the impact meeting of the big electric current of bus is very stronger, and by the experiment of various different magnetic cores, the magnetic core sectional area of choosing is with 3.5～4.5cm
2Be advisable.
Of the present invention first, second let out and can circuit embodiments constituted identically, and four groups of assembly parallel connections of being connected by high-power TVS pipe and power resistor combine as shown in Figure 2.Among the figure, high-power TVS pipe adopts 5KP20A, and it can be released big electric current and guarantee the output voltage substantially constant; It is the 50W high-power resistance in 15 Europe that power resistor is selected resistance for use.When bus current hour, get can the coil output voltage lowly, electric current is less, the loss-free substantially supply back-end processing of energy circuit; When bus current is big, to get and can be in saturation condition by coil, output voltage is bigger, and this moment, the impedance of TVS pipe 5KP20A reduced greatly, not only played the leakage current effect, guaranteed that also output voltage is basicly stable about 25V.And 15 Europe resistance play the restriction function of current, prevent that electric current is excessive and cause the TVS pipe to burn out.Like this, unnecessary energy is released by the nonlinear impedance circuit that TVS pipe and resistance constitute, and gets and can produce a reverse excitation during coil when electric current flows back to, and oppositely excitation can be offset a part of forward excitation again, makes to get and can reduce by the coil output voltage.Experiment showed, that this power supply device does not have obvious heating phenomenon, has improved the scope of bus current greatly when bus current arrives 2000A.
Voltage treatment circuit a embodiment of the present invention constitutes as shown in Figure 3.Comprise that successively the bridge rectifier (being made of the MBR20200 Schottky diode) that connects, ∏ mode filter are (by two 50V, the tantalum electric capacity of 470uF and 100mH inductance are formed), electric pressure converter (adopting the LT3433 chip), pressurizer (adopting MAX8881), low pass filter (by a 25uH inductance coil and 25V, the tantalum electric capacity of 10uF constitutes) and be connected in diode (1N5819) between electric pressure converter and the pressurizer mutually.The output of letting out the energy circuit becomes direct voltage by the MBR20200 bridge rectifier, after the filtering of ∏ type, convert to+direct voltage of 5.2V by the LT3433 electric pressure converter, output+5.2V one tunnel through pressurizer MAX888l and filtering after the more stable+5V direct voltage of output, give the power supply of back end signal treatment circuit; Another road is connected with the corresponding interface of voltage treatment circuit b by behind the diode 1N5819.
Voltage treatment circuit b embodiment of the present invention constitutes as shown in Figure 3.Comprise that successively the bridge rectifier (being made of the MBR20200 Schottky diode) that connects, ∏ mode filter are (by two 50V, the tantalum electric capacity of 470uF and 100mH inductance are formed), electric pressure converter (adopting LT3433), diode 1N5819, pressurizer (adopting MAX8881) and low pass filter be (by a 25uH inductance coil and a 25V, the tantalum electric capacity of 10uF constitutes), and photocell, this photronic output links to each other with the output of diode and the input of pressurizer respectively.The output of letting out the energy circuit is transformed into direct voltage by the MBR20200 bridge rectifier; behind ∏ type filtering voltage regulation; convert to+direct voltage of 5.2V by the LT3433 electric pressure converter; output+5.2V joins with photronic output after by diode 1N5819; with voltage treatment circuit a output+after 5.2V voltage converges; through the more stable+5V direct voltage of output after pressurizer MAX8881 and the filtering, give rear end guard signal treatment circuit power supply.
Laser assembly of the present invention as shown in Figure 4.Comprise a 220VAC/DC-+5VDC power module, low-pass filtering (by 25V, the 100uF electrochemical capacitor constitutes) and a laser of linking to each other successively.220VAC/DC-+5VDC power module output+5V voltage is through after the low-pass filtering, joins with the input of laser, and laser converts the electrical signal to light signal and sends on high-tension side photocell to by optical fiber.
Claims (6)
1, a kind of high potential side energy supplying device of active electronic type photoelectric current mutual inductor; it is characterized in that; this device comprise by first high pressure that links to each other successively get can coil, second let out can protective circuit, the circuit A that forms of voltage treatment circuit a; by second high pressure that links to each other successively get can coil, second let out can protective circuit, the circuit B that forms of voltage treatment circuit b, an and laser assembly that links to each other with circuit B.
2, device as claimed in claim 1 is characterized in that, described first, second got and can all be adopted the loop coil that is made of the ultramicro-crystal alloy magnetic core by coil, is mounted on the bus.
3, device as claimed in claim 1 is characterized in that, described first, second let out and can be combined by four groups of assembly parallel connections that high-power TVS manages and power resistor is connected by circuit.
4, device as claimed in claim 1 is characterized in that, described voltage treatment circuit a comprises successively bridge rectifier, the filtering of ∏ type, electric pressure converter, pressurizer, the low pass filter that connects and is connected in diode between electric pressure converter and the pressurizer mutually.
5, device as claimed in claim 1, it is characterized in that, described voltage treatment circuit b comprises bridge rectifier, ∏ mode filter, electric pressure converter, diode, pressurizer and the low pass filter that connects successively, and photocell, this photronic output links to each other with the output of diode and the input of pressurizer respectively.
6, device as claimed in claim 1 is characterized in that, described laser assembly comprises power module, low-pass filtering and the laser that links to each other successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101126302A CN101345128B (en) | 2008-05-23 | 2008-05-23 | High potential side energy supplying device of active electronic type photoelectric current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101126302A CN101345128B (en) | 2008-05-23 | 2008-05-23 | High potential side energy supplying device of active electronic type photoelectric current mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101345128A true CN101345128A (en) | 2009-01-14 |
| CN101345128B CN101345128B (en) | 2010-06-02 |
Family
ID=40247100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101126302A Expired - Fee Related CN101345128B (en) | 2008-05-23 | 2008-05-23 | High potential side energy supplying device of active electronic type photoelectric current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101345128B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937764A (en) * | 2010-09-15 | 2011-01-05 | 西安交通大学 | Active photoelectric current transformermutual inductor by mixed power supply of ultrasound and induction |
| CN101950660A (en) * | 2010-09-15 | 2011-01-19 | 西安交通大学 | Active photoelectric current transformer power-supplied by ultrasonic wave |
| CN104391506A (en) * | 2014-09-19 | 2015-03-04 | 福州大学 | Transformer station guide rail type inspection robot |
| CN106059119A (en) * | 2016-06-13 | 2016-10-26 | 国网山东省电力公司滨州供电公司 | 10kV (Kilovolt) power unit of high voltage side of electronic current transformer |
| CN108918943A (en) * | 2018-04-16 | 2018-11-30 | 北京四方继保自动化股份有限公司 | A kind of D.C. high voltage transmission optics direct current measuring devices |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100587865C (en) * | 2005-09-08 | 2010-02-03 | 北京许继电力光学技术有限公司 | Active optics current transformer and operation method for electriferous working thereof |
| CN201219065Y (en) * | 2008-05-23 | 2009-04-08 | 北京浩霆光电技术有限责任公司 | High potential side energy supplying device of active electronic photoelectric current mutual inductor |
-
2008
- 2008-05-23 CN CN2008101126302A patent/CN101345128B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937764A (en) * | 2010-09-15 | 2011-01-05 | 西安交通大学 | Active photoelectric current transformermutual inductor by mixed power supply of ultrasound and induction |
| CN101950660A (en) * | 2010-09-15 | 2011-01-19 | 西安交通大学 | Active photoelectric current transformer power-supplied by ultrasonic wave |
| CN101950660B (en) * | 2010-09-15 | 2012-11-28 | 西安交通大学 | Active photoelectric current transformer power-supplied by ultrasonic wave |
| CN104391506A (en) * | 2014-09-19 | 2015-03-04 | 福州大学 | Transformer station guide rail type inspection robot |
| CN106059119A (en) * | 2016-06-13 | 2016-10-26 | 国网山东省电力公司滨州供电公司 | 10kV (Kilovolt) power unit of high voltage side of electronic current transformer |
| CN108918943A (en) * | 2018-04-16 | 2018-11-30 | 北京四方继保自动化股份有限公司 | A kind of D.C. high voltage transmission optics direct current measuring devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101345128B (en) | 2010-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101345128B (en) | High potential side energy supplying device of active electronic type photoelectric current mutual inductor | |
| CN201238083Y (en) | Power cord with power supply noise filter | |
| CN201219065Y (en) | High potential side energy supplying device of active electronic photoelectric current mutual inductor | |
| CN202352507U (en) | High voltage-side power supply device for electronic current transformer | |
| CN103036285A (en) | Super capacitor charging circuit | |
| CN202166908U (en) | Combination structure of low dropout regulator (LDO) and direct-current (DC) to direct-current (DC) converter | |
| CN102025138A (en) | Parallel superconducting fault current limiter | |
| CN101345122B (en) | Direct current flux control type adjustable reactor | |
| Liu et al. | A novel method for magnetic energy harvesting based on capacitive energy storage and core saturation modulation | |
| CN102331522B (en) | Isolated voltage acquisition circuit for light transmission equipment | |
| CN201414000Y (en) | Intelligent controlled electrical pole crossover filtering electricity economizer | |
| CN104319910A (en) | Power source energy taking circuit based on high-voltage power transmission line | |
| CN201805354U (en) | Single-chip integrated circuit for vehicle-mounted adapter of portable notebook computer | |
| CN201774324U (en) | High voltage side mutual-inductance energy tanking device of high-voltage transmission line | |
| CN101295931B (en) | AC power source current output stabilization and converting circuit, converter and conversion method | |
| CN208112220U (en) | A kind of protective relaying device power supply power-fail holding realization circuit | |
| CN103647447A (en) | Power supply device of communication module of electric energy meter | |
| CN207732648U (en) | Single-ended reverse exciting circuit | |
| CN201562575U (en) | Single-phase traction transformer for high-speed passenger special line | |
| CN212365715U (en) | Transformer coil axial outgoing line structure suitable for special environment | |
| CN101982921B (en) | Universal high-voltage capacitor energy storage module | |
| CN206379766U (en) | A kind of self-powered circuit and the wearable device with the self-powered circuit | |
| CN202663114U (en) | Voltage compensation system | |
| CN205622234U (en) | Idle stepup transformer of static formula of tandem type developments | |
| CN219980663U (en) | Magnetic field energy power management circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151229 Address after: 242299 No. 26, Guoan Road, Guangde Economic Development Zone, Anhui Patentee after: Anhui exhibition Electric Equipment Co., Ltd. Address before: 100085 Beijing city Haidian District East Road No. 1 Building 1 room 01 District A Patentee before: Beijing Hoti Photoelectric Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20180523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |