CN205304634U - A output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof - Google Patents
A output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof Download PDFInfo
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- CN205304634U CN205304634U CN201521131464.2U CN201521131464U CN205304634U CN 205304634 U CN205304634 U CN 205304634U CN 201521131464 U CN201521131464 U CN 201521131464U CN 205304634 U CN205304634 U CN 205304634U
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Abstract
The utility model discloses an output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof, including rectifier circuit for carry out the rectification and with the signal transmission after the rectification to filter circuit to high -voltage line output voltage, filter circuit for carry out the post -filter transmission extremely to the signal after the rectification, parallelly connected overvoltage crowbar still between rectifier circuit and filter circuit, overvoltage crowbar links to each other with control drive circuit, it has voltage sampling circuit still to connect in parallel between filter circuit and reduction voltage circuit, and voltage sampling circuit transmits the voltage signal who gathers to stagnating back voltage comparater, and the voltage comparater that stagnates back drives overvoltage crowbar work through controlling drive circuit control. The utility model discloses voltage -regulating circuit is simple reliable, stable work in the time of can changing (0~1000A) on a large scale at the high voltage transmission lines electric current.
Description
Technical field
This utility model relates to electrical technology field, is specifically related to a kind of output voltage on ultra-high-tension power transmission line and adjusts circuit and induction energy fetching device thereof.
Background technology
On-Line Monitor Device is significant for the reliability service ensureing power system. Because the sensor monitored and equipment are all near high-tension line, it is necessary to insulation against ground, thus can not be powered with conventional power supply. At present, the power supply mode that on-line monitoring equipment is conventional has: 1) adopting solar panel to coordinate accumulator to be powered, this kind of mode volume is big, installs inconvenience, and output is affected by weather; 2) laser powered sensor, relatively costly, output power is less; 3) adopting electric field induction or principle of capacitive divider power taking, this kind of method power taking power is less; 4) adopt current transformer (CT) to take energy technology, utilize electromagnetic induction principle to obtain electric energy from high-voltage line, it is achieved isolation power supply, there is simple in construction, the advantages such as volume is little, less costly, reliable and stable. But utilizing CT to take and can there is also some technological difficulties, the electric current on high-voltage line is change, how to make electricity getting device adaptation high voltage line current change on a large scale and be particularly important. Namely when high voltage line current is less, acquisition electric energy as much as possible, when line current is bigger, the power output of restriction CT, it is prevented that late-class circuit overvoltage suppresses core sataration simultaneously.
Considering the principle of induction energy fetching, when taking energy CT secondary side output electric current, the magnetic flux that second siding ring produces can offset the magnetic flux that a part of primary side current produces, and namely produces to go the effect of encouraging. Be limited the power output producing electric coil, it is prevented that rectifying and wave-filtering electric capacity overvoltage, it is possible to suppress power to export by the method for short circuit second siding ring, now output electric current is relatively big, but output voltage is relatively low, thus output is relatively low, generates heat less. There is researcher to propose the conducting by stabilivolt and control bidirectional triode thyristor or the full method controlling switching device, but can not turn off voluntarily after controlled silicon conducting, being only zero at institute's making alive or flow through when electric current is zero and just can turn off, this can cause filter capacitor spread of voltage.For full-controlled device, it is switched on or off not thorough owing to entirely controlling switching device at the Near The Critical Point of stabilivolt voltage stabilizing, can cause that MOS switch dissipation is serious.
Utility model content
For solving the deficiency that prior art exists, the utility model discloses the output voltage on ultra-high-tension power transmission line and adjust circuit and induction energy fetching device thereof, voltage-regulating circuit has simple and reliable feature, it is possible to adapt to the large-scale curent change of high-tension line.
For achieving the above object, concrete scheme of the present utility model is as follows:
Output voltage on ultra-high-tension power transmission line adjusts circuit, including rectification circuit, for high-voltage line output voltage carrying out rectification and transmitting the signal after rectification to filter circuit;
Filter circuit, for being filtered the signal after rectification rear and transmitting to reduction voltage circuit;
Also overvoltage crowbar in parallel between rectification circuit with filter circuit, overvoltage crowbar is connected with controlling drive circuit;
Also being parallel with voltage sampling circuit between filter circuit and reduction voltage circuit, the voltage signal gathered is transmitted to hysteresis voltage comparator by voltage sampling circuit, and hysteresis voltage comparator controls to drive overvoltage crowbar to work by controlling drive circuit.
Further, described control drive circuit and hysteresis voltage comparator are all connected with electric supply installation.
Further, described electric supply installation includes Three-end voltage stabilizer, and the input of Three-end voltage stabilizer is connected to rectification circuit, and the outfan of Three-end voltage stabilizer is respectively connected to the negative pole end of hysteresis voltage comparator, drives the push-pull driver circuit of overvoltage crowbar.
Further, the input of described rectification circuit is also parallel with bilateral transient voltage suppression diode.
Further, between overvoltage crowbar and filter circuit, isolating diode it is also associated with.
Further, described rectification circuit is bridge rectifier, including four diodes.
Further, described overvoltage crowbar includes switch mosfet pipe and the diode with this paralleled power switches.
Further, described control drive circuit is the push-pull driver circuit that complementary double-triode valve is constituted.
Further, described hysteresis voltage comparator includes amplifier and the resistance connected between the output point and positive terminal of amplifier.
Further, voltage sampling circuit includes the fixed resistance and the variable resistance that are in series, and the circuit between fixed resistance and variable resistance obtains voltage.
Further, described filter circuit is polarity filter capacitor, and the positive ends of polarity filter capacitor is connected with the input of Three-end voltage stabilizer.
Further, reduction voltage circuit is BUCKDC-DC reduction voltage circuit.
Further, the induction energy fetching device of circuit is adjusted based on above-mentioned output voltage on ultra-high-tension power transmission line, including an annular core being suspended on high-tension line, annular core being wound with second siding ring, the outfan of second siding ring adjusts circuit with output voltage and is connected.
The beneficial effects of the utility model:
This utility model voltage-regulating circuit is simple and reliable, can when high voltage line current wide variation (0��1000A) steady operation, when the secondary side number of turn is more (more than 100 circles), coordinating corresponding passive cooling measure, the heating of this circuit is less.
This utility model sensing electricity getting device adapts to high voltage line current and changes on a large scale. Namely when high voltage line current is less, acquisition electric energy as much as possible, when line current is bigger, the power output of restriction CT, it is prevented that late-class circuit overvoltage suppresses core sataration simultaneously.
Accompanying drawing explanation
The structural representation of Fig. 1 present invention;
Fig. 2 physical circuit figure of the present invention;
Secondary side output voltage and current waveform (output open circuit) when Fig. 3 primary side current is 10A;
Secondary side output voltage and current waveform (output band 1W load) when Fig. 4 primary side current is 200A;
Secondary side output voltage and current waveform (output band 1W load) when Fig. 5 primary side current is 500A;
Secondary side output voltage and current waveform (output band 1W load) when Fig. 6 primary side current is 1000A;
Detailed description of the invention:
Below in conjunction with accompanying drawing, this utility model is described in detail:
As shown in Figure 1-2; a kind of sensing electricity getting device on high-voltage line; it includes an annular core being suspended on high-tension line, second siding ring and voltage-regulating circuit, and described voltage-regulating circuit includes bridge rectifier and capacitor filter, the overvoltage crowbar being made up of MOSFET and controls drive circuit, BUCK reduction voltage circuit. Wherein, overvoltage crowbar and control drive circuit, power MOSFET is installed between rectifier bridge and filter capacitor, for preventing filter capacitor from being discharged by MOSFET, increasing by an isolating diode D1, model used by rectifier bridge is model used by GBJ2510, MOSFET is IRFP250; MOSFET controls partly to adopt the hysteresis voltage comparator being made up of LM358, the constant pressure source that reference voltage is made up of TL431 provides, circuit sets reference voltage as 5V, voltage sampling circuit is obtained by the mode of a fixed resistance and variable resistance series connection dividing potential drop, by regulating variable resistance size, it is possible to regulate the limits value size of filter capacitor voltage; MOSFET drive part adopts the push-pull driver circuit being made up of complementary double-triode valve, audion model is NPN pipe S8050 and PNP pipe S8550 respectively, this drive circuit can ensure that MOSFET reliably opens shutoff, accelerates the speed that is switched on or off of MOSFET, reduces switching loss. The power supply of the control of MOSFET and drive circuit, generating circuit from reference voltage is provided by Three-end voltage stabilizer LM7812, the positive ends of the input termination rectifying and wave-filtering electric capacity of LM7812. Consider that the thunderbolt being likely to occur on high-tension line, short circuit etc. likely can take and can induce the situation of relatively high pulse voltage by CT secondary side, for protecting the safety of late-class circuit, a bilateral transient voltage suppression diode TVS1 was added before rectifier bridge, when second siding ring output HIGH voltage pulse, released energy by the conducting of TVS1, considering the resistance to voltage levels of rear class MOSFET, the bilateral transient voltage suppression diode model chosen is P6KE180CA; BUCK reduction voltage circuit adopts LM2596S to constitute, maximum output 3A.
Operation principle: owing to the cut-in voltage of MOSFET is generally relatively low, the IRFP250 cut-in voltage as used by this circuit is minimum for 2V, it is necessary to consider circuit startup stage, namely when electric capacity C1 voltage start from scratch rising time MOSFET whether in off position. When electric capacity C1 voltage is relatively low, now LM7812 does not have pressure stabilization function, and the mu balanced circuit being made up of TL431 does not have pressure stabilization function yet, is equivalent to lead directly to. Owing to voltage sampling circuit have passed through electric resistance partial pressure; the voltage of input amplifier positive input terminal is lower than negative input end; amplifier output low level; namely MOSFET is off state; such electric capacity C1 voltage can rise smoothly; when voltage rise to reference voltage can normally export time, this protection circuit gets final product normal operation, and startup terminates.
Silicon steel core selected by experiment is of a size of: 40*95*30mm, the number of turn 120 circle.Experimental result is as illustrated in figures 3-6. Fig. 3 is primary side current when being 10A secondary side output voltage and current waveform (output open circuit); Secondary side output voltage and current waveform (output band 1W load) when being 200A that Fig. 4 is primary side current; Secondary side output voltage and current waveform (output band 1W load) when being 500A that Fig. 5 is primary side current; Secondary side output voltage and current waveform (output band 1W load) when being 1000A that Fig. 6 is primary side current. Can be seen that by experiment this utility model voltage-regulating circuit can when high voltage line current wide variation (0��1000A) steady operation.
Detailed description of the invention of the present utility model is described in conjunction with accompanying drawing although above-mentioned; but the not restriction to this utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection domain of the present utility model.
Claims (10)
1. the output voltage on ultra-high-tension power transmission line adjusts circuit, it is characterized in that, including rectification circuit, for high-voltage line output voltage carrying out rectification and transmitting the signal after rectification to filter circuit;
Filter circuit, for being filtered the signal after rectification rear and transmitting to reduction voltage circuit;
Also overvoltage crowbar in parallel between rectification circuit with filter circuit, overvoltage crowbar is connected with controlling drive circuit;
Also being parallel with voltage sampling circuit between filter circuit and reduction voltage circuit, the voltage signal gathered is transmitted to hysteresis voltage comparator by voltage sampling circuit, and hysteresis voltage comparator controls to drive overvoltage crowbar to work by controlling drive circuit.
2. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, described control drive circuit and hysteresis voltage comparator are all connected with electric supply installation.
3. the output voltage on ultra-high-tension power transmission line as claimed in claim 2 adjusts circuit; it is characterized in that; described electric supply installation includes Three-end voltage stabilizer; the input of Three-end voltage stabilizer is connected to rectification circuit, and the outfan of Three-end voltage stabilizer is respectively connected to the negative pole end of hysteresis voltage comparator, drives the push-pull driver circuit of overvoltage crowbar.
4. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, the input of described rectification circuit is also parallel with bilateral transient voltage suppression diode.
5. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, is also associated with isolating diode between overvoltage crowbar and filter circuit.
6. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, described rectification circuit is bridge rectifier, including four diodes;
Described overvoltage crowbar includes switch mosfet pipe and the diode with this paralleled power switches.
7. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, described control drive circuit is the push-pull driver circuit that complementary double-triode valve is constituted;
Described hysteresis voltage comparator includes amplifier and the resistance connected between the output point and positive terminal of amplifier.
8. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, voltage sampling circuit includes the fixed resistance and the variable resistance that are in series, and the circuit between fixed resistance and variable resistance obtains voltage.
9. the output voltage on ultra-high-tension power transmission line as claimed in claim 1 adjusts circuit, it is characterized in that, described filter circuit is polarity filter capacitor, and the positive ends of polarity filter capacitor is connected with the input of Three-end voltage stabilizer;
Reduction voltage circuit is BUCKDC-DC reduction voltage circuit.
10. an induction energy fetching device, circuit is adjusted based on the arbitrary described output voltage on ultra-high-tension power transmission line of the claims 1-9, including an annular core being suspended on high-tension line, being wound with second siding ring on annular core, the outfan of second siding ring adjusts circuit with output voltage and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131464.2U CN205304634U (en) | 2015-12-29 | 2015-12-29 | A output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131464.2U CN205304634U (en) | 2015-12-29 | 2015-12-29 | A output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205304634U true CN205304634U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521131464.2U Active CN205304634U (en) | 2015-12-29 | 2015-12-29 | A output voltage regulator circuit for high tension transmission line is last and response energy taking device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN106786366A (en) * | 2016-12-16 | 2017-05-31 | 国家电网公司 | Current Transformer Secondary side open-circuit-protection early warning system |
-
2015
- 2015-12-29 CN CN201521131464.2U patent/CN205304634U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN106786366A (en) * | 2016-12-16 | 2017-05-31 | 国家电网公司 | Current Transformer Secondary side open-circuit-protection early warning system |
| CN106786366B (en) * | 2016-12-16 | 2019-04-30 | 国家电网公司 | Current Transformer Secondary side open-circuit-protection early warning system |
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