CN102590586B - Photoelectric current transformer for supplying power for transmission line insulator - Google Patents
Photoelectric current transformer for supplying power for transmission line insulator Download PDFInfo
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- CN102590586B CN102590586B CN201210041009.8A CN201210041009A CN102590586B CN 102590586 B CN102590586 B CN 102590586B CN 201210041009 A CN201210041009 A CN 201210041009A CN 102590586 B CN102590586 B CN 102590586B
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Abstract
The invention discloses a photoelectric current transformer for supplying power for a transmission line insulator. The photoelectric current transformer comprises a current photoelectric measuring system; a high-voltage current photoelectric data measuring and transmitting module makes use of an electromagnetic induction principle to measure the current of a current busbar at a low-voltage side and converts the current information into a photoelectric signal, and the current information is transmitted to a current measurement secondary processing module arranged at the low-voltage side to perform data processing. The photoelectric current transformer is characterized in that an active photoelectric current transformer further comprises a high frequency drive power supply arranged at the low-voltage side, a high frequency transmission line insulator core and an alternating current (AC)/direct current (DC) power supply converter arranged at the high-frequency side; the high frequency transmission insulator core transmits high frequency AC electric energy with a specific frequency produced by the high frequency driving power supply from the low-voltage side to the high-voltage side through the liquid crystal (LC) high frequency electromagnetic resonance, and the high frequency AC electric energy is converted into DC electric energy by the AC/DC power supply converter, thereby supplying power for the high-voltage current measurement data photoelectric transmission module in the current photoelectric measuring system.
Description
Technical field
The present invention relates to a kind of active photoelectric current transformer.
Background technology
Current transformer plays a very important role in electric system, is a nucleus equipment in electric system.Development and intelligent grid construction along with electric system, the particularly development of EHV transmission, electric system is more and more higher to the requirement of current transformer, traditional electromagnetic current transducer, owing to there is ferromagnetic saturated, shortcoming that frequency response is low, High-Voltage Insulation ability, interruption of service are many etc. cannot overcome, cannot meet the demand for development of electric system.Good, the wide frequency range of exploitation linear properties, the current transformer that High-Voltage Insulation ability is strong be intelligent grid development in the urgent need to.Optical fiber current mutual inductor OCT because anti-electromagnetic interference performance is good, measuring accuracy is high, dynamic range is large, frequency response range is wide, little lightweight, the low price of volume, with the advantage such as the interface of digital device is convenient, be with a wide range of applications, become gradually the trend of high-tension current inductor.Optical fiber current mutual inductor mainly contains pure optical current mutual inductor (passive photoelectric mutual inductor) and two kinds of forms of electro optic Hybrid current transformer (active photo-electricity mutual-inductor), pure optical current mutual inductor is owing to being subject to the impact of the factors such as environment temperature and vibrations, and the stability of its performance is its practical main difficulty of puzzlement; Electro optic Hybrid current transformer utilize low power current transformer or (Rogowski) the electromagnetic measurement principle of coil measure electric current, utilize fiber-optic communications traffic metrical information, overcome a difficult problem for the poor stability of passive photoelectric mutual inductor, good stability is developed rapidly it, has entered at present practical stage.But the on high-tension side measurement of active photo-electricity mutual-inductor, data processing and optoelectronic information transmission system etc. need power supply, power supply to mainly contain at present the power supply modes such as " power supply of high-pressure side primary current electromagnetic induction ", " laser energy supply ", " ultrasound wave energy supply " and " pneumatic energy supply "." power supply of high-pressure side primary current electromagnetic induction " exists for electric energy not enough when primary current is smaller, and the power supply dead band that formation cannot be worked, when primary current is very large and exist again confession electric flux excessive during short circuit, is difficult to release and damages the difficult problems of feed circuit; Although laser, the stable performance of ultrasound wave energy supply, be well positioned to meet the stability requirement of power supply, but power supply energy comparison is little, very high to the energy-conservation and anti-interference requirement of measurement and photo transmission system, and too expensive, the long-time running life-span can not meet the demands; Pneumatic energy supply also exists gas easily to reveal and the long-time running life-span can not meet the demands.The high-pressure side energy supply of electro optic Hybrid current transformer is its practical core technology difficult problem of puzzlement.
Summary of the invention
For the existing deficiency of existing active photoelectric current transformer high-voltage side energy supply mode, the invention provides the active photoelectric current transformer of a kind of transmission line insulator power supply, can pass and can realize the on high-tension side electricity consumption module energy supply that active photoelectric current transformer or other high pressure is detected online to watch-dog by high-frequency electromagnetic resonance.
For reaching above object, the present invention takes following technical scheme to be achieved:
A kind of photoelectric current inductor of transmission line insulator power supply, comprise that one by the electric current photoeletric measuring system of high-voltage current measurement photooptical data transport module, telecommunication optical fiber and current measurement data secondary treating module composition, high-voltage current measurement photooptical data transport module utilizes electromagnetic induction principle to measure the electric current of high voltage side current bus, and current information is converted to photosignal, the current measurement secondary treating module that current information is sent to low-pressure side by telecommunication optical fiber is carried out data processing; It is characterized in that, described active photoelectric current transformer also comprises that a high-frequency drive power supply that is placed in low-pressure side, high frequency transmission line insulator core, one are placed on high-tension side AC/DC supply convertor, this high frequency transmission line insulator core is sent to high-pressure side the high-frequency ac electric energy of the characteristic frequency of high-frequency drive power generation from low-pressure side by LC high-frequency electromagnetic resonance wherein, then by AC/DC supply convertor, is converted to direct current energy and powers to the high-voltage current measurement data light electrical transmission module in electric current photoeletric measuring system.
In such scheme, described high frequency transmission line insulator core comprises two capacitor column, each capacitor column forms by the plane-parallel capacitor series connection of identical physical dimension and electric capacity size is stacking, between two capacitor column, the pitch place of equal height is connected with several inductance L, the output of described high-frequency drive power supply connects two electrodes of two capacitor column low pressure ends, and two electrodes of two capacitor column high-pressure sides connect the input of AC/DC supply convertor 4.
Two capacitor column can be installed side by side, also one of them can be made to right cylinder, and another makes cylindrical drum, then carry out concentric axis suit.
Described high-frequency drive power supply comprises AC-DC translation circuit, a signal generator, a frequency of phase locking tracker, a power amplifier and first transformer, and the output of AC-DC translation circuit connects signal generator, frequency of phase locking tracker and power amplifier; The high-frequency signal of signal generator output connects power amplifier, and the output of power amplifier connects the input of the first transformer, and the output of the first transformer is connected with two electrodes of two capacitor column low pressure ends in high frequency transmission line insulator core.
Described AC/DC supply convertor comprises second transformer being connected with two electrodes of two capacitor column high-pressure sides, the output of this second transformer connects the input of a high-frequency rectification circuit, the output of high-frequency rectification circuit connects the input of a filtering circuit, the DC power supply of voltage stabilizing conversion stable output is carried out in the output of filtering circuit by DC-DC converter, to high-voltage current measurement data light electrical transmission module, power.
The photoelectric current inductor of transmission line insulator power supply of the present invention, utilize high-frequency electrical energy being sent to high-pressure side by high frequency transmission line insulator core from low-pressure side for electric flux, in high-pressure side, high-frequency electrical energy is converted again to direct current energy, realize the high-pressure side power unit energy supply to active photoelectric current transformer.So between the high voltage of electric power system and low-voltage both sides, be complete power frequency electrical isolation, the High-Voltage Insulation ability of this electric power system is strong, what transmit is large for electric flux, stable performance, be not subject to such environmental effects and restriction, long service life, and the electromagnetic interference influence that on high-tension side measurement and data handling system etc. are produced is little.
The present invention compared with prior art, has the following advantages:
1) be not subject to the restriction of the bus current size in high-pressure side, without " power supply dead band ", not affected by heavy current impact, very stable for electric flux.
2) can provide the larger electric flux that supplies, and reliable power supply that can be long-term continuously, very low to the energy-conservation and anti-interference requirement of the measuring system of active photo-electricity mutual-inductor and photo transmission system.
3) performance is very stable, and adaptive capacity to environment is not subject to by force the restriction of the factors such as temperature variation, and long service life can meet the requirement of electric system to security, reliability and long service life.
Accompanying drawing explanation
Fig. 1 is the photoelectric current inductor structural representation of transmission line insulator power supply of the present invention.
Fig. 2 is the functional block diagram of the high-frequency drive power supply 3 of Fig. 1 mesolow side.
Fig. 3 is the functional block diagram of the AC-DC supply convertor 4 of Fig. 1 mesohigh side.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
With reference to figure 1, at low-pressure side L, with high-frequency drive power supply 3, the power frequency AC of 50HZ is converted to and drives the needed high frequency electric source of high frequency transmission line insulator core, the high frequency output of high-frequency drive power generation connects two electrodes of the low pressure end (lower surface) of two capacitor column 1 in high frequency transmission line insulator core and 2, and high-frequency drive power supply 3 drives high frequency transmission line insulator cores to produce the high-frequency electromagnetic energy that will transmit.High frequency transmission line insulator core comprises two series capacitor posts 1 and 2 and be connected to two inductance L between capacitor column, capacitor column 1 and stacking the forming of 2 plane-parallel capacitors by several identical physical dimensions and electric capacity size series connection, two capacitor column 1 and 2 can be installed side by side, also capacitor column 1 can be made to right cylinder, capacitor column 2 is made to cylindrical drum, again they are carried out to concentric axis suit, plane-parallel capacitor can adopt high voltage ceramic capacitor, connect stacking one-tenth capacitor column 1 and as far as possible reduce the mutual gap between capacitor at 2 o'clock of the electrode of plane-parallel capacitor, keep the height at the corresponding capacitor place between two capacitor column 1 and 2 identical parallel with electrode, between the electrode of the capacitor of two capacitor column 1 and 2 equal pitch At The Height, connect inductance L, pitch height and inductance number and inductance value size are determined by the frequency of high-frequency drive power supply 3, two capacitor column 1 and series capacitor and these inductance L of 2 form high frequency transmission line insulator core, this insulator core has alternating current-direct current High-Voltage Insulation ability, the high-frequency electrical energy of characteristic frequency (10KHZ-1MHZ) can be transferred to high-pressure side H from low-pressure side L.The input of AC/DC supply convertor 4 connects two electrodes of the high-pressure side (upper surface) of two capacitor column 1 in high frequency transmission line insulator core and 2, the high-frequency electrical energy of high frequency transmission line insulator core high-pressure side output is converted to direct current energy and to the high-voltage current measurement photooptical data transport module 6 in the electric current photoeletric measuring system of photoelectric current inductor, powers, realize the photoelectric measurement of high-tension current.
Electric current photoeletric measuring system comprises high-voltage current measurement photooptical data transport module 6, telecommunication optical fiber 7 and current measurement secondary treating module 8.High-voltage current measurement photooptical data transport module utilizes electromagnetic induction principle to measure the high-tension current in high-tension current bus 5, and current information is converted to photosignal, by telecommunication optical fiber 7, current information is sent to the current measurement secondary treating module 8 of low-pressure side L, carry out the measurement of data processing realization to high-tension current.
As shown in Figure 2, the high-frequency drive power supply 3 of low-pressure side comprises an AC----DC translation circuit, a signal generator, a frequency of phase locking tracker, a power amplifier and a transformer.50HZ power frequency AC is transformed into DC voltage through AC----DC translation circuit, and the output of AC-DC translation circuit connects the DC bias circuit of signal generator, frequency of phase locking tracker and power amplifier, for they provide DC offset voltage; The high-frequency signal of signal generator output connects power amplifier, carries out power amplification and produces high frequency power voltage, and the frequency of high-frequency signal is identical with the LC electromagnetic resonance frequency in high frequency transmission line insulator core; The input of the output connection transformer of power amplifier, the output of transformer is connected with two electrodes of the low pressure end of two capacitor column 1 in high frequency transmission line insulator core and 2, realizes the impedance matching of the electromagnetic resonance frequency of high-frequency drive power supply 3 and high frequency transmission line insulator core by transformer; Phase-locked loop frequency tracker gathers output voltage and the electric current of transformer, supply with the LC electromagnetic resonance frequency change in trivial phase frequency tracking circuit judgement high frequency transmission line insulator core, dynamic LC electromagnetic resonance frequency of following the tracks of in high frequency transmission line insulator core, and the output frequency of adjustment signal generator, realize frequency dynamic tracking and resonance coupling.
As shown in Figure 3, described AC/DC supply convertor 4 comprises transformer, high-frequency rectification, filtering circuit and the DC-DC converter being connected with two electrodes of two capacitor column 1 and 2 high-pressure side, the output of this transformer connects high-frequency rectification circuit, high-frequency rectification circuit connects filtering circuit, the DC power supply (0-12V) of voltage stabilizing conversion stable output is carried out in the output of filtering circuit by DC-DC converter, to high-voltage current measurement photooptical data transport module 6 power supplies of the electric current photoeletric measuring system mesohigh side of photoelectric current inductor.
Claims (5)
1. the photoelectric current inductor of transmission line insulator power supply, comprise that one by the electric current photoeletric measuring system of high-voltage current measurement photooptical data transport module, telecommunication optical fiber and current measurement data secondary treating module composition, high-voltage current measurement photooptical data transport module utilizes electromagnetic induction principle to measure the electric current of high voltage side current bus, and current information is converted to photosignal, the current measurement data secondary treating module that current information is sent to low-pressure side by telecommunication optical fiber is carried out data processing; It is characterized in that, the photoelectric current inductor of described transmission line insulator power supply also comprises that a high-frequency drive power supply that is placed in low-pressure side, high frequency transmission line insulator core, one are placed on high-tension side AC/DC supply convertor, this high frequency transmission line insulator core is sent to high-pressure side the high-frequency ac electric energy of the characteristic frequency of high-frequency drive power generation from low-pressure side by LC high-frequency electromagnetic resonance wherein, then by AC/DC supply convertor, is converted to direct current energy and powers to the high-voltage current measurement photooptical data transport module in electric current photoeletric measuring system; Described high frequency transmission line insulator core comprises two capacitor column, each capacitor column forms by the plane-parallel capacitor series connection of identical physical dimension and electric capacity size is stacking, between two capacitor column, the pitch place of equal height is connected with several inductance L, the output of described high-frequency drive power supply connects two electrodes of two capacitor column low pressure ends, and two electrodes of two capacitor column high-pressure sides connect the input of AC/DC supply convertor.
2. the photoelectric current inductor of transmission line insulator power supply as claimed in claim 1, is characterized in that, described two capacitor column are installed side by side.
3. the photoelectric current inductor of transmission line insulator power supply as claimed in claim 1, is characterized in that, one of them makes right cylinder described two capacitor column, and another makes cylindrical drum, then carries out concentric axis suit.
4. the photoelectric current inductor that transmission line insulator as claimed in claim 1 is powered, it is characterized in that, described high-frequency drive power supply comprises AC-DC translation circuit, a signal generator, a frequency of phase locking tracker, a power amplifier and first transformer, and the output of AC-DC translation circuit connects signal generator, frequency of phase locking tracker and power amplifier; The high-frequency signal of signal generator output connects power amplifier, and the output of power amplifier connects the input of the first transformer, and the output of the first transformer is connected with two electrodes of two capacitor column low pressure ends in high frequency transmission line insulator core.
5. the photoelectric current inductor that transmission line insulator as claimed in claim 1 is powered, it is characterized in that, described AC/DC supply convertor comprises second transformer being connected with two electrodes of two capacitor column high-pressure sides, the output of this second transformer connects the input of a high-frequency rectification circuit, the output of high-frequency rectification circuit connects the input of a filtering circuit, the DC power supply of voltage stabilizing conversion stable output is carried out in the output of filtering circuit by DC-DC converter, to high-voltage current measurement photooptical data transport module, power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210041009.8A CN102590586B (en) | 2012-02-22 | 2012-02-22 | Photoelectric current transformer for supplying power for transmission line insulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210041009.8A CN102590586B (en) | 2012-02-22 | 2012-02-22 | Photoelectric current transformer for supplying power for transmission line insulator |
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| CN102590586B true CN102590586B (en) | 2014-04-23 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864763A (en) * | 2006-03-31 | 2006-11-22 | 西安交通大学 | A remote detection device for implanted heart pacemaker and bidirectional data transmission method |
| CN101227105A (en) * | 2007-11-26 | 2008-07-23 | 清华大学 | Inductance coupling interval power supply device |
| CN101309057A (en) * | 2008-06-19 | 2008-11-19 | 西安交通大学 | Ultrasonic energy supply apparatus of photoelectric current inductor |
| CN101364474A (en) * | 2008-06-06 | 2009-02-11 | 西安交通大学 | Air-actuated energizing apparatus for current mutual inductor |
| CN101849342A (en) * | 2007-09-17 | 2010-09-29 | 高通股份有限公司 | High efficiency and power transfer in wireless power magnetic resonators |
| CN102244418A (en) * | 2011-07-12 | 2011-11-16 | 广东工业大学 | Electronic mutual inductor working power supply |
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- 2012-02-22 CN CN201210041009.8A patent/CN102590586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864763A (en) * | 2006-03-31 | 2006-11-22 | 西安交通大学 | A remote detection device for implanted heart pacemaker and bidirectional data transmission method |
| CN101849342A (en) * | 2007-09-17 | 2010-09-29 | 高通股份有限公司 | High efficiency and power transfer in wireless power magnetic resonators |
| CN101227105A (en) * | 2007-11-26 | 2008-07-23 | 清华大学 | Inductance coupling interval power supply device |
| CN101364474A (en) * | 2008-06-06 | 2009-02-11 | 西安交通大学 | Air-actuated energizing apparatus for current mutual inductor |
| CN101309057A (en) * | 2008-06-19 | 2008-11-19 | 西安交通大学 | Ultrasonic energy supply apparatus of photoelectric current inductor |
| CN102244418A (en) * | 2011-07-12 | 2011-11-16 | 广东工业大学 | Electronic mutual inductor working power supply |
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