CN102377252A - 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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- CN102377252A CN102377252A CN2011103567509A CN201110356750A CN102377252A CN 102377252 A CN102377252 A CN 102377252A CN 2011103567509 A CN2011103567509 A CN 2011103567509A CN 201110356750 A CN201110356750 A CN 201110356750A CN 102377252 A CN102377252 A CN 102377252A
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- 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 with 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 the ultra-high-tension power transmission line or other automation equipments.
Background technology
The power supply that uses on the existing ultra-high-tension power transmission line, a kind of mode is through optical fiber light to be delivered on the high voltage transmission line from ground, through opto-electronic conversion, light is converted into then.Adopt the cost of this mode very high.Another kind of mode is to adopt current transformer, converts the primary current of ultra-high-tension power transmission line into low-voltage.The power output of this mode directly receives the influence of ultra-high-tension power transmission line primary current size, and when primary current was very little, power output was just very little, can not meet the demands.
Summary of the invention
The present invention provides a kind of high voltage transmission line is carried out the suspended power supply of voltage transitions, to solve the unstable and cost high-technology problem of power output that two kinds of power supplys using on traditional ultra-high-tension power transmission line exist.
The present invention realizes that the technical scheme of foregoing invention purpose is following:
A kind of high voltage transmission line is carried out the suspended power supply of voltage transitions, be connected on electrode P and the high-voltage conducting wires after the primary coil series connection by resistance R and transformer T; The primary coil two ends of transformer T are parallel with overvoltage protecting device D, and transformer T secondary coil is the low-voltage output; Electrode P makes tubular by electric conducting material, is enclosed within on the high-voltage conducting wires, uses the insulating material support fixation between itself and the high-voltage conducting wires.
Described overvoltage protecting device D is a kind of or combination among Transient Suppression Diode, piezo-resistance, voltage-stabiliser tube, trigger tube or the discharge tube.
At transformer time coil output, be connected with rectification, filtering, voltage stabilizing circuit.
Advantage of the present invention and good effect are following:
1, insulate between this suspended power supply and the earth and the high-voltage conducting wires, output dc voltage is a suspended power supply, and its electric potential floating is applicable to instrument transformer and automation equipment on the ultra-high-tension power transmission line, does not have the insulation breakdown problem of high voltage or superhigh pressure;
2, this suspended power supply power output can not receive the influence of ultra-high-tension power transmission line primary current size, and power output is stable;
3, circuit design structure is simple, and reliability is high, and cost is low;
4, when ultra-high-tension power transmission line is struck by lightning, because the protection of overvoltage protecting device D, the voltage at transformer two ends is clamped within the breakdown voltage value scope of overvoltage protecting device D, and is unlikely to damage;
5, this suspended power supply can be exported the different voltages with different value, satisfies the requirement to various different magnitudes of voltage of automation equipment.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Concrete structure of the present invention and operation principle are explained as follows:
Referring to Fig. 1, a kind of embodiment is provided among Fig. 1.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.When ultra-high-tension power transmission line normally moved, the capacitance current of high voltage transmission line flowed to the earth and other two ultra-high-tension power transmission lines mutually through 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 through resistance R, induces low-voltage at the two ends of transformer T secondary coil.Through over commutation, filtering, voltage stabilizing circuit, output dc voltage provides power supply for instrument transformer or automation equipment.The voltage at transformer T primary coil two ends is lower than the puncture voltage of overvoltage protecting device D during normal the operation, 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 be provided with different windings, with output different voltages with different value, satisfies the requirement to various different magnitudes of voltage of automation equipment.When ultra-high-tension power transmission line or electrode were struck by lightning, the resistance R among the figure was born most instantaneous lightning voltage, avoids lightning voltage to be applied to transformer T primary coil two ends fully.Because the protection of overvoltage protecting device D, the voltage at transformer two ends is clamped within the breakdown voltage value scope of overvoltage protecting device D, and is unlikely to damage.
Claims (3)
1. one kind is carried out the suspended power supply of voltage transitions to high voltage transmission line, it is characterized in that, is connected on electrode P and the high voltage electricity transmission conductive wire after the primary coil series connection by resistance R and transformer T; The primary coil two ends of transformer T are parallel with overvoltage protecting device D, and transformer T secondary coil is the low-voltage output; Electrode P makes tubular by electric conducting material, is enclosed within on the high voltage transmission line, uses the insulating material support fixation between itself and the high-voltage conducting wires.
2. a kind of suspended power supply that high voltage transmission line is carried out 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 the discharge tube.
3. according to claim 1ly a kind of high voltage transmission line is carried out the suspended power supply of voltage transitions, it is characterized in that,, be connected with rectification, filtering, voltage stabilizing circuit at transformer time coil output.
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 true CN102377252A (en) | 2012-03-14 |
| CN102377252B 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 |
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| CN (1) | CN102377252B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995502A (en) * | 2010-12-01 | 2011-03-30 | 上海市电力公司超高压输变电公司 | 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 |
-
2011
- 2011-11-11 CN CN201110356750.9A patent/CN102377252B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995502A (en) * | 2010-12-01 | 2011-03-30 | 上海市电力公司超高压输变电公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102377252B (en) | 2014-05-28 |
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| 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 |