CN104810932A - Magnetic flux feedback adjustment current sensing electricity taking device and method - Google Patents
Magnetic flux feedback adjustment current sensing electricity taking device and method Download PDFInfo
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- 230000004907 flux Effects 0.000 title claims abstract description 33
- 230000005611 electricity Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 79
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims description 27
- 230000006698 induction Effects 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
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- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000001447 compensatory effect Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
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- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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Abstract
Disclosed is a magnetic flux feedback adjustment current sensing electricity taking device and method. The electricity taking device comprises an iron core, an energy taking winding, a feedback control winding, a rectifier filter circuit, a power distribution circuit and a dynamic feedback control circuit, a transmission conductor penetrates the iron core, the energy taking winding obtains energy from the transmission conductor and is controlled by the power distribution circuit, redundant energy is inputted the dynamic feedback control circuit, a modulated current signal is applied to the feedback control winding by the dynamic feedback control circuit and generates an alternating magnetic field, the direction of the alternating magnetic field is opposite to that of the energy taking winding, so that magnetic flux in the iron core is decreased, power output is decreased, the electricity taking device solves the problems of serious heating, poor adjustability, low control accuracy under change current and the like in high current of a traditional sensing electricity taking scheme and fundamentally solves the problem that excessive energy enters from the energy taking winding under the high current.
Description
Technical field
The invention belongs to technical field of power systems, be specifically related to one and realize the online induction energy fetching of transmission line, and regulate iron core magnetic to pass to the devices and methods therefor realizing stabilized voltage power supply output by dynamical feedback.
Background technology
Along with the development and apply of transmission line on-line monitoring technique, increasing monitoring equipment needs to be arranged on transmission pressure.Because equipment is operated in high-voltage, cannot from low-pressure side directly to its power supply, the supply power mode adopted at present mainly contains powered battery, solar powered, laser biography energy and transformer induced power taking etc.Wherein respond to way to take power perfect with improvement through technological accumulation in recent years, start progressively to be applied to engineering site, but because the curent change of transmission pressure has uncertainty, need electricity getting device not only can work under small area analysis, and can run reliably and with long-term under big current, the continuous change of electric current can also be adapted to simultaneously, keep voltage stabilizing to export.
Under the big current and variable-current of transmission line, the energy that electromagnetic induction can obtain may be far longer than the energy that load consumes, and constantly fluctuate, this effectively controls with regard to needs, prevent from damaging load, the technology adopted at present mainly contains that energy is released, winding compensates, batch (-type) fills the methods such as energy.
Energy mode of releasing generally adopts powerful adjustable dump load to shunt, and is released away by unnecessary energy in heat energy mode, and caloric value is large, is difficult to ensure steady in a long-term operation; Winding compensation way is taked on same iron core, to arrange compensative winding to offset primary current, the induced voltage of secondary side under regulating magnetic flux and then controlling big current, generally by the input of Control compensative winding with exit, can not regulate continuously, be difficult to the Rapid Variable Design adapting to primary current; Batch (-type) carries out secondary pressure output after filling and bulky capacitor or battery pack being adopted to carry out charging energy-storing again, when primary current is excessive, utilize the frequent break-make charge circuit of the device such as relay, controllable silicon to control the input of energy, this mode needs frequent switching, switching device load weight, export the precision of voltage regulation not high, and there is life problems.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the electric current induction electricity getting device providing a kind of magnetic flux feedback to regulate and method thereof.
The technical solution used in the present invention is for achieving the above object:
The electric current induction electricity getting device that a kind of magnetic flux feedback regulates, by iron core, get and can winding, FEEDBACK CONTROL winding, current rectifying and wave filtering circuit, power distributing circuit and dynamic feedback control circuit form, it is characterized in that: iron core is wound with respectively and gets energy winding and FEEDBACK CONTROL winding, get and can connect power distributing circuit and load by current rectifying and wave filtering circuit by winding; Power distributing circuit connects dynamic feedback control circuit and load, and dynamic feedback control circuit connects FEEDBACK CONTROL winding, load.
According to the electric current induction electricity getting device that above-described a kind of magnetic flux feedback regulates, it is characterized in that described power distributing circuit comprises mains switch and voltage triggering circuit, mains switch is located between current rectifying and wave filtering circuit and dynamical feedback circuit, voltage triggering circuit is connected in parallel on the output of current rectifying and wave filtering circuit, voltage triggering circuit is used for the mains switch of control connection, realizes the break-make of dynamical feedback circuit.
According to the electric current induction electricity getting device that above-described a kind of magnetic flux feedback regulates, it is characterized in that described dynamical feedback circuit comprises voltage sampling circuit, voltage-frequency conversion circuit and signal modulation circuit, the voltage signal collected is sent to voltage-frequency conversion circuit by the voltage sampling circuit be connected with load, by voltage-frequency conversion element, the square-wave signal that this voltage signal converts certain frequency to is sent to signal modulation circuit, signal modulation circuit produces an industrial frequency AC electric current by power amplification element, and this alternating current is sent to FEEDBACK CONTROL winding.
The electric current induction electricity-fetching method that a kind of magnetic flux feedback regulates, by iron core, get and winding, FEEDBACK CONTROL winding, current rectifying and wave filtering circuit, power distributing circuit and dynamic feedback control circuit can form electricity getting device, transmission pressure is through iron core, iron core is wound with respectively and gets energy winding and FEEDBACK CONTROL winding, get and can connect power distributing circuit and load by current rectifying and wave filtering circuit by winding; Power distributing circuit connects dynamic feedback control circuit and load, and dynamic feedback control circuit connects FEEDBACK CONTROL winding, load; It is characterized in that: get energy winding by obtaining the energy from transmission pressure, and controlled by power distributing circuit simultaneously, by unnecessary energy input dynamic feedback control circuit, dynamic feedback control circuit applies a current signal through ovennodulation to FEEDBACK CONTROL winding, this current signal produces an alternating magnetic field contrary with getting energy winding direction, to reduce the magnetic flux of core interior, reduce power stage, power taking scheme big current is answered to generate heat serious, the problem such as controllability is poor, and under variable-current control precision is low to solve heritage.
According to the electric current induction electricity-fetching method that above-described a kind of magnetic flux feedback regulates, it is characterized in that: get and winding induction can obtain alternating current impression electric current, be converted to direct current by current rectifying and wave filtering circuit, for load provides required power; When transmission pressure electric current is excessive, power distributing circuit can by unnecessary energy input dynamic feedback control circuit, the operation principle of power distributing circuit is: be provided with voltage triggering circuit at the output of current rectifying and wave filtering circuit, for monitoring load voltage, after voltage reaches setting voltage, sending triggering signal, mains switch is connected, is dynamic feedback control circuit supply; When load voltage is lower than trigger voltage, show that primary current is too low, cannot export enough power, now mains switch turns off, dynamic feedback control down circuitry; Dynamic feedback control circuit comprises voltage sampling circuit, voltage-frequency conversion circuit and signal modulation circuit; Voltage sampling circuit Real-Time Monitoring load voltage, and by voltage-frequency conversion circuit by voltage-frequency conversion element, this voltage signal is converted to the square-wave signal of certain frequency, side's wave frequency is directly proportional to magnitude of voltage, and when voltage is higher, square wave frequency raises, as the voltage decreases, square wave frequency also reduces; The party's frequency signal input signal modulating circuit modulates is become the AC signal input feedback controlled winding of a corresponding current value, one is produced with get can winding reciprocal alternating magnetic field by this winding, to change the magnetic flux of core interior, by the accurate control to iron core magnetic flux, and then control the output current size of getting energy winding, the change of automatic adaptation primary current, the magnitude of voltage after rectifying and wave-filtering is made to be stabilized in set point, realize voltage stabilizing to export, and suppress excessive energy to enter to get can winding.
The present invention's beneficial effect is compared to existing technology: make the accurate control that energy taking device passes through iron core magnetic flux, the change of automatic adaptation primary current, realize voltage stabilizing to export, excessive energy can be obtained by winding to suppress to get, answer electricity getting device big current fever phenomenon, controllability poor to solve heritage, the problems such as control precision is low, and voltage fluctuation is large, solving energy too much under big current from root can the problem that enters of winding from getting.
Accompanying drawing explanation
Fig. 1 is the composition frame chart of the electric current induction electricity getting device embodiment that magnetic flux feedback of the present invention regulates;
Fig. 2 is power distributing circuit schematic diagram;
Fig. 3 is dynamic feedback control circuit theory diagrams.
Embodiment
Fig. 1 is the composition frame chart of the electric current induction electricity getting device embodiment that magnetic flux feedback of the present invention regulates; The electric current induction electricity getting device that magnetic flux feedback regulates, by iron core 101, get and can winding 102, FEEDBACK CONTROL winding 103, current rectifying and wave filtering circuit 104, power distributing circuit 106 and dynamic feedback control circuit 105 form, iron core 101 is wound with respectively and gets energy winding 102 and FEEDBACK CONTROL winding 103, get and can connect power distributing circuit 106 and load 107 by current rectifying and wave filtering circuit 104 by winding; Power distributing circuit connects 106 and connects dynamic feedback control circuit 105 and load 107, and dynamic feedback control circuit 105 connects FEEDBACK CONTROL winding 103, load 107; Fig. 2 is power distributing circuit schematic diagram; Power distributing circuit comprises mains switch 302 and voltage triggering circuit 301, mains switch 302 is located between current rectifying and wave filtering circuit 104 and dynamical feedback circuit 105, voltage triggering circuit 301 is connected in parallel on the output of current rectifying and wave filtering circuit, voltage triggering circuit 301, for the mains switch 302 of control connection, realizes the break-make of dynamical feedback circuit 105; Fig. 3 is dynamic feedback control circuit theory diagrams, dynamical feedback circuit 105 comprises voltage sampling circuit 401, voltage-frequency conversion circuit 402 and signal modulation circuit 403, the voltage signal collected is sent to voltage-frequency conversion circuit 402 by the voltage sampling circuit 401 be connected with load, by voltage-frequency conversion element, the square-wave signal this voltage signal being converted to certain frequency is sent to signal modulation circuit 403, signal modulation circuit 403 produces an industrial frequency AC electric current by power amplification element, and this alternating current is sent to FEEDBACK CONTROL winding 103.
The embodiment of the electric current induction electricity getting device coordinating above-mentioned magnetic flux feedback to regulate, the electric current induction electricity-fetching method that a kind of magnetic flux feedback regulates is: by iron core 101, get and winding 102, FEEDBACK CONTROL winding 103, current rectifying and wave filtering circuit 104, power distributing circuit 106 and dynamic feedback control circuit 105 can form electricity getting device, transmission pressure is through iron core 101, iron core is wound with respectively and gets energy winding 102 and FEEDBACK CONTROL winding 103, get and can connect power distributing circuit 106 and load 107 by current rectifying and wave filtering circuit 104 by winding; Power distributing circuit 106 connects dynamic feedback control circuit 105 and load 107, and dynamic feedback control circuit 105 connects FEEDBACK CONTROL winding 103, load 107; Get energy winding 102 by obtaining the energy from transmission pressure, and controlled by power distributing circuit 106 simultaneously, by unnecessary energy input dynamic feedback control circuit 105, dynamic feedback control circuit 105 applies a current signal through ovennodulation to FEEDBACK CONTROL winding, this current signal produces an alternating magnetic field contrary with getting energy winding direction, to reduce the magnetic flux of core interior, reduce power stage, power taking scheme big current is answered to generate heat serious, the problem such as controllability is poor, and under variable-current control precision is low to solve heritage.
According to the electric current induction electricity-fetching method that above-described a kind of magnetic flux feedback regulates, get and can respond to acquisition alternating current impression electric current by winding 102, be converted to direct current by current rectifying and wave filtering circuit 104, for load 107 provides required power; When transmission pressure electric current is excessive, power distributing circuit 106 can by unnecessary energy input dynamic feedback control circuit 105, the operation principle of power distributing circuit 106 is: Fig. 2 is power distributing circuit schematic diagram, voltage triggering circuit 301 is provided with at the output of current rectifying and wave filtering circuit 104, for monitoring load voltage, after voltage reaches setting voltage, send triggering signal, mains switch 302 is connected, for dynamic feedback control circuit 105 is powered; When load voltage is lower than trigger voltage, show that primary current is too low, cannot export enough power, now mains switch turns off, dynamic feedback control down circuitry; Fig. 3 is dynamic feedback control circuit theory diagrams, and dynamic feedback control circuit 105 comprises voltage sampling circuit 401, voltage-frequency conversion circuit 402 and signal modulation circuit 403; Voltage sampling circuit 401 Real-Time Monitoring load voltage, and by voltage-frequency conversion circuit 402 by voltage-frequency conversion element, this voltage signal is converted to the square-wave signal of certain frequency, side's wave frequency is directly proportional to magnitude of voltage, when voltage is higher, square wave frequency raises, and as the voltage decreases, square wave frequency also reduces; The party's frequency signal input signal modulation circuit 403 is modulated into the AC signal input feedback controlled winding 103 of a corresponding current value, one is produced with get can winding reciprocal alternating magnetic field by this winding, to change the magnetic flux of core interior, by the accurate control to iron core magnetic flux, and then control the output current size of getting energy winding, the change of automatic adaptation primary current, the magnitude of voltage after rectifying and wave-filtering is made to be stabilized in set point, realize voltage stabilizing to export, excessive energy can be obtained by winding to suppress to get.
The present invention breaches original induction power taking technology, takes full advantage of electromagnetic induction principle, carries out dynamic adjustments to magnetic flux, and solving energy too much under big current from root can the problem that enters of winding from getting.
The foregoing is only specific embodiments of the invention, be not limited to the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the electric current induction electricity getting device of a magnetic flux feedback adjustment, by iron core, get and can winding, FEEDBACK CONTROL winding, current rectifying and wave filtering circuit, power distributing circuit and dynamic feedback control circuit form, it is characterized in that: iron core is wound with respectively and gets energy winding and FEEDBACK CONTROL winding, get and can connect power distributing circuit and load by current rectifying and wave filtering circuit by winding; Power distributing circuit connects dynamic feedback control circuit and load, and dynamic feedback control circuit connects FEEDBACK CONTROL winding, load.
2. the electric current that a kind of magnetic flux feedback according to claim 1 regulates responds to electricity getting device, it is characterized in that described power distributing circuit comprises mains switch and voltage triggering circuit, mains switch is located between current rectifying and wave filtering circuit and dynamical feedback circuit, voltage triggering circuit is connected in parallel on the output of current rectifying and wave filtering circuit, voltage triggering circuit is used for the mains switch of control connection, realizes the break-make of dynamical feedback circuit.
3. according to the electric current induction electricity getting device that a kind of magnetic flux feedback according to claim 1 or claim 2 regulates, it is characterized in that described dynamical feedback circuit comprises voltage sampling circuit, voltage-frequency conversion circuit and signal modulation circuit, the voltage signal collected is sent to voltage-frequency conversion circuit by the voltage sampling circuit be connected with load, by voltage-frequency conversion element, the square-wave signal that this voltage signal converts certain frequency to is sent to signal modulation circuit, signal modulation circuit produces an industrial frequency AC electric current by power amplification element, this alternating current is sent to FEEDBACK CONTROL winding.
4. the electric current induction electricity-fetching method of a magnetic flux feedback adjustment, by iron core, get and winding, FEEDBACK CONTROL winding, current rectifying and wave filtering circuit, power distributing circuit and dynamic feedback control circuit can form electricity getting device, transmission pressure is through iron core, iron core is wound with respectively and gets energy winding and FEEDBACK CONTROL winding, get and can connect power distributing circuit and load by current rectifying and wave filtering circuit by winding; Power distributing circuit connects dynamic feedback control circuit and load, and dynamic feedback control circuit connects FEEDBACK CONTROL winding, load; It is characterized in that: get energy winding by obtaining the energy from transmission pressure, and controlled by power distributing circuit simultaneously, by unnecessary energy input dynamic feedback control circuit, dynamic feedback control circuit applies a current signal through ovennodulation to FEEDBACK CONTROL winding, this current signal produces an alternating magnetic field contrary with getting energy winding direction, to reduce the magnetic flux of core interior, reduce power stage, power taking scheme big current is answered to generate heat serious, the problem such as controllability is poor, and under variable-current control precision is low to solve heritage.
5. the electric current that a kind of magnetic flux feedback according to claim 4 regulates responds to electricity-fetching method, it is characterized in that: get and winding induction can obtain alternating current impression electric current, be converted to direct current, for load provides required power by current rectifying and wave filtering circuit; When transmission pressure electric current is excessive, power distributing circuit can by unnecessary energy input dynamic feedback control circuit, the operation principle of power distributing circuit is: be provided with voltage triggering circuit at the output of current rectifying and wave filtering circuit, for monitoring load voltage, after voltage reaches setting voltage, sending triggering signal, mains switch is connected, is dynamic feedback control circuit supply; When load voltage is lower than trigger voltage, show that primary current is too low, cannot export enough power, now mains switch turns off, dynamic feedback control down circuitry; Dynamic feedback control circuit comprises voltage sampling circuit, voltage-frequency conversion circuit and signal modulation circuit; Voltage sampling circuit Real-Time Monitoring load voltage, and by voltage-frequency conversion circuit by voltage-frequency conversion element, this voltage signal is converted to the square-wave signal of certain frequency, side's wave frequency is directly proportional to magnitude of voltage, and when voltage is higher, square wave frequency raises, as the voltage decreases, square wave frequency also reduces; The party's frequency signal input signal modulating circuit modulates is become the AC signal input feedback controlled winding of a corresponding current value, one is produced with get can winding reciprocal alternating magnetic field by this winding, to change the magnetic flux of core interior, by the accurate control to iron core magnetic flux, and then control the output current size of getting energy winding, the change of automatic adaptation primary current, the magnitude of voltage after rectifying and wave-filtering is made to be stabilized in set point, realize voltage stabilizing to export, excessive energy can be obtained by winding to suppress to get.
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| CN201510143079.8A CN104810932A (en) | 2015-03-30 | 2015-03-30 | Magnetic flux feedback adjustment current sensing electricity taking device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762907A (en) * | 2016-03-04 | 2016-07-13 | 国网山东省电力公司平原县供电公司 | Inductive energy-obtaining device |
| CN110034589A (en) * | 2019-05-05 | 2019-07-19 | 重庆大学 | Induction energy fetching formula alternating current-direct current combines power supply system and control method |
| CN110187655A (en) * | 2019-05-08 | 2019-08-30 | 张慧 | A kind of design method of big through-flow magnet ring |
| CN111211584A (en) * | 2020-01-17 | 2020-05-29 | 安徽国锦电力工程有限公司 | Electric power transmission and transformation project's consumer power intelligent distribution system |
| CN113098149A (en) * | 2021-04-29 | 2021-07-09 | 南方电网数字电网研究院有限公司 | Power self-adaptive induction power taking equipment |
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| US20050146307A1 (en) * | 2003-12-31 | 2005-07-07 | Dooley Kevin A. | Variable AC voltage regulation control method and apparatus |
| CN101783532A (en) * | 2010-03-26 | 2010-07-21 | 张俊昌 | Induction electricity getting device for high-voltage power transmission line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762907A (en) * | 2016-03-04 | 2016-07-13 | 国网山东省电力公司平原县供电公司 | Inductive energy-obtaining device |
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| CN110187655A (en) * | 2019-05-08 | 2019-08-30 | 张慧 | A kind of design method of big through-flow magnet ring |
| CN111211584A (en) * | 2020-01-17 | 2020-05-29 | 安徽国锦电力工程有限公司 | Electric power transmission and transformation project's consumer power intelligent distribution system |
| CN113098149A (en) * | 2021-04-29 | 2021-07-09 | 南方电网数字电网研究院有限公司 | Power self-adaptive induction power taking equipment |
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