CN102377252B - Suspended power supply for voltage conversion of high-voltage transmission line - Google Patents
Suspended power supply for voltage conversion of high-voltage transmission line Download PDFInfo
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- CN102377252B CN102377252B CN201110356750.9A CN201110356750A CN102377252B CN 102377252 B CN102377252 B CN 102377252B CN 201110356750 A CN201110356750 A CN 201110356750A CN 102377252 B CN102377252 B CN 102377252B
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- transmission line
- voltage
- transformer
- power supply
- voltage transmission
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Abstract
The invention discloses a suspended power supply for voltage conversion of a high-voltage transmission line. A resistor R and the primary coil of a transformer T are connected in series and then connected to an electrode P and a high-voltage transmission lead; over-voltage protective devices D are connected in parallel with two ends of the primary coil of the transformer T, and the secondary coil of the transformer T is a low-voltage output end; and the electrode P is made into a cylindrical shape by using a conductive material and sleeved on the high-voltage transmission line, and the electrode P and the high-voltage transmission lead are supported and fixed by using an insulating material. The suspended power supply can solve the technical problems of instable output power and high cost and the like of two power supplies used in the conventional high-voltage transmission line.
Description
Technical field
The present invention relates to the suspended power supply that a kind of high voltage by ultra-high-tension power transmission line converts low-voltage to.Belong to the technical field that power supply is provided for the instrument transformer on ultra-high-tension power transmission line or other automation equipments.
Background technology
The power supply using on existing ultra-high-tension power transmission line, a kind of mode is by optical fiber, light to be delivered to high voltage transmission line from ground, then, by opto-electronic conversion, light is converted to electricity.Adopt cost in this way very high.Another kind of mode is to adopt current transformer, and the primary current of ultra-high-tension power transmission line is converted to low-voltage.The power output of this mode is directly subject to the impact of ultra-high-tension power transmission line primary current size, and in the time that primary current is very little, power output is just very little, can not meet the demands.
Summary of the invention
The invention provides a kind of suspended power supply that high voltage transmission line is carried out to voltage transitions, to solve the unstable and high in cost of production technical problem of power output that two kinds of power supplys using on traditional ultra-high-tension power transmission line exist.
The technical scheme that the present invention realizes foregoing invention object is as follows:
High voltage transmission line is carried out to a suspended power supply for voltage transitions, after the primary coil series connection by resistance R and transformer T, be connected on electrode P and high voltage transmission line; The primary coil two ends of transformer T are parallel with overvoltage protecting device D, and transformer T secondary coil is low-voltage output end; Electrode P makes tubular by electric conducting material, is enclosed within on high voltage transmission line, supports fixing between itself and high voltage transmission line with insulating material.
Described overvoltage protecting device D is a kind of or combination among Transient Suppression Diode, piezo-resistance, voltage-stabiliser tube, trigger tube or discharge tube.
At transformer time coil output, be connected with rectification, filtering and voltage stabilizing circuit.
Advantage of the present invention and good effect are as follows:
1, between this suspended power supply and the earth and high-voltage conducting wires, insulate, output dc voltage is suspended power supply, and its electric potential floating is applicable to instrument transformer and automation equipment on ultra-high-tension power transmission line, there is no the insulation breakdown problem of high voltage or superhigh pressure;
2, this suspended power supply power output can not be subject to the impact of ultra-high-tension power transmission line primary current size, stable output power;
3, circuit design structure is simple, and reliability is high, and cost is low;
4,, in the time that ultra-high-tension power transmission line is struck by lightning, due to the protection of overvoltage protecting device D, within the voltage at transformer two ends is clamped at the breakdown voltage value scope of overvoltage protecting device D, and be unlikely to damage;
5, this suspended power supply can be exported different magnitudes of voltage, meets the requirement to various different magnitudes of voltage of automation equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Concrete structure of the present invention and operation principle are described as follows:
Referring to Fig. 1, in Fig. 1, provide a kind of embodiment.Resistance R receiving electrode P, the primary coil of another termination transformer T of resistance R, another termination high voltage transmission line of this coil.The two ends of this coil are parallel with overvoltage protecting device D.In the time that ultra-high-tension power transmission line normally moves, the capacitance current of high voltage transmission line flows to the earth and other two-phase ultra-high-tension power transmission line by electrode P, between high voltage transmission line and electrode, produces voltage drop.This voltage is applied to the two ends of transformer T primary coil by resistance R, induce low-voltage at the two ends of transformer T secondary coil.Through over commutation, filtering, voltage stabilizing circuit, output dc voltage, provides power supply to instrument transformer or automation equipment.When normal operation, the voltage at transformer T primary coil two ends, lower than the puncture voltage of overvoltage protecting device D, does not almost have electric current to flow through overvoltage protecting device D, and what the overvoltage protecting device D here adopted is two-way Transient Suppression Diode.The secondary coil of transformer T can arrange different windings, to export different magnitudes of voltage, meets the requirement to various different magnitudes of voltage of automation equipment.In the time that ultra-high-tension power transmission line or electrode are struck by lightning, the resistance R in figure is born most instantaneous lightning voltage, avoids lightning voltage to be applied to transformer T primary coil two ends completely.Due to the protection of overvoltage protecting device D, within the voltage at transformer two ends is clamped at the breakdown voltage value scope of overvoltage protecting device D, and be unlikely to damage.
Claims (3)
1. a suspended power supply that high voltage transmission line is carried out to voltage transitions, is characterized in that, after the primary coil series connection by resistance R and transformer T, is connected on electrode P and high voltage transmission line; The primary coil two ends of transformer T are parallel with overvoltage protecting device D, and transformer T secondary coil is low-voltage output end; Electrode P makes tubular by electric conducting material, is enclosed within on high voltage transmission line, supports fixing between itself and high voltage transmission line with insulating material.
2. a kind of suspended power supply that high voltage transmission line is carried out to voltage transitions according to claim 1; it is characterized in that, described overvoltage protecting device D is a kind of or combination among Transient Suppression Diode, piezo-resistance, voltage-stabiliser tube, trigger tube or discharge tube.
3. a kind of suspended power supply that high voltage transmission line is carried out to voltage transitions according to claim 1, is characterized in that, at transformer time coil output, is connected with rectification, filtering and voltage stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110356750.9A CN102377252B (en) | 2011-11-11 | 2011-11-11 | Suspended power supply for voltage conversion of high-voltage transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110356750.9A CN102377252B (en) | 2011-11-11 | 2011-11-11 | Suspended power supply for voltage conversion of high-voltage transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102377252A CN102377252A (en) | 2012-03-14 |
| CN102377252B true CN102377252B (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110356750.9A Expired - Fee Related CN102377252B (en) | 2011-11-11 | 2011-11-11 | Suspended power supply for voltage conversion of high-voltage transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102377252B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995502B (en) * | 2010-12-01 | 2016-12-28 | 上海市电力公司 | Current-voltage integrated digital mutual inductor |
| CN202309246U (en) * | 2011-11-11 | 2012-07-04 | 张斌 | Suspended power supply for carrying out voltage conversion on high-voltage power transmission line |
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2011
- 2011-11-11 CN CN201110356750.9A patent/CN102377252B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102377252A (en) | 2012-03-14 |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20161111 |