CN102832720A - Online monitoring equipment power supply system based on wireless electric power transmission technology - Google Patents

Online monitoring equipment power supply system based on wireless electric power transmission technology Download PDF

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Publication number
CN102832720A
CN102832720A CN2012103019566A CN201210301956A CN102832720A CN 102832720 A CN102832720 A CN 102832720A CN 2012103019566 A CN2012103019566 A CN 2012103019566A CN 201210301956 A CN201210301956 A CN 201210301956A CN 102832720 A CN102832720 A CN 102832720A
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CN
China
Prior art keywords
electricity
transmission
high
module
circuit
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CN2012103019566A
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Chinese (zh)
Inventor
戴栋
邱超
郝艳捧
王国利
李锐海
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华南理工大学
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Priority to CN2012103019566A priority Critical patent/CN102832720A/en
Publication of CN102832720A publication Critical patent/CN102832720A/en

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Abstract

The invention discloses an online monitoring equipment power supply system based on wireless electric power transmission technology, comprising an induction power taking module, a high-frequency signal excitation module, a transmitting coil, a receiving coil and an energy conversion module; the induction power taking module, the high-frequency signal excitation module and the transmitting coil are mounted on a power transmission line in sequence; the induction power taking module is connected with the high-frequency signal excitation module; and the receiving coil and the energy conversion module connected sequentially are mounted on a pole tower. According to the online monitoring equipment power supply system, electric energy is supplied to online monitoring equipment on the pole tower in the manner of wireless transmission, so that the application range of the induction power taking technology is extended, a new power source is added, and the reliability and continuity of an online monitoring equipment power source for the power transmission line are improved.

Description

A kind of on-line monitoring power devices system based on wireless technology of transmission of electricity

Technical field

The present invention relates to the resonance wireless technology of transmission of electricity that is coupled, particularly a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity.

Background technology

Ultra-high-tension power transmission line is one of chief component of electric power system, and its security reliability has material impact to the normal operation of whole electric power system.In order to ensure the normal operation of transmission line, many on-line monitoring equipment have been installed on circuit and shaft tower at present, they are through carrying out real time on-line monitoring to line status, to improve the fail safe and the reliability of transmission line and relevant device.

Subject matter when the supply of electrical energy of on-line monitoring equipment is their operations.At present, transmission line on-line monitoring equipment mainly adopts the mode of solar cell+storage battery to supply power.It is bigger that this supply power mode is influenced by meteorology, electromagnetic environment and accumulator property, the less and poor stability of continued power power.This has greatly limited transmission line on-line monitoring equipment in practical application effect has hindered it and has further developed and use.In order to solve the power supply supply problem of on-line monitoring equipment, the someone proposes to use laser energy supply or distributed capacitance energy supply method to increase new energy source, through increasing output power, improves power supply stability, but does not finally all play reasonable effect.Reason is that the power that the laser energy-provision way can provide is very low, and equipment manufacturing cost is expensive, not easy care; The distributed capacitance electricity-fetching method is vulnerable to the influence of stray capacitance, poor stability.So, need take other method to solve the power issue of transmission line on-line monitoring equipment.In fact, had a kind of reasonable way to take power on transmission line on-line monitoring equipment, to obtain application now, that responds to power taking exactly.Respond to electricity-fetching module and be installed on the transmission line, utilize circuit alternating magnetic fields induction on every side to produce electric energy and be the on-line monitoring power devices, as supplying power for directly being attached to the patch sensor that is used for thermometric on the power transmission line.But the induction power taking can only directly be supplied power for the transducer that is installed on the transmission line, for being installed in transducer or main frame on the shaft tower then because of the excessive and difficult realization of distance.The induction electric energy transmitting that power taking obtained to shaft tower, is the power devices on the shaft tower, can realizes the increase of output power, thereby improve the stability of power supply.But under the high voltage power transmission environment, it obviously is infeasible using traditional wire transmission.

The wireless technology of transmission of electricity that causes extensive concern in recent years can solve this difficult problem better.Wireless technology of transmission of electricity is proposed by tesla the earliest, compares with traditional wired transmission of electricity, and it makes between power supply and the electricity consumption does not have direct physical connection, has broken away from the constraint of electric wire, has the advantage of convenience, safety.Traditional wireless technology of transmission of electricity has microwave electric energy wireless transmission and electromagnetic induction energy Radio Transmission Technology; But microwave electric energy Radio Transmission Technology through-put power is limited; Equipment manufacturing cost is expensive; And the wireless technology of transmission of electricity transmission range of electromagnetic induction energy is very little, all can not satisfy the requirement of transmission line on-line monitoring equipment.

Summary of the invention

Shortcoming and deficiency that the present invention exists in order to overcome prior art provide a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity.

The technical scheme that the present invention adopts:

A kind of on-line monitoring power devices system based on wireless technology of transmission of electricity is used for the power supply of transmission line on-line monitoring equipment, comprises induction electricity-fetching module, high-frequency signal injection module, transmitting coil, receiving coil, energy conversion module; Said induction electricity-fetching module, high-frequency signal injection module, transmitting coil are installed on the transmission line in order; Said induction electricity-fetching module is connected with the high-frequency signal injection module; Said receiving coil and the energy conversion module that connects successively is installed on the shaft tower, and said transmitting coil has identical self-resonant frequency with receiving coil.

Said transmitting coil is coaxial parallel with two ends and two coils that receiving coil is installed in insulator.

Said induction electricity-fetching module comprise in order getting of connecting can coil, front end surge protection circuit, current rectifying and wave filtering circuit, excess voltage protection, reduction voltage circuit, DC/DC translation circuit, the alternating magnetic field that is used for around the transmission line is obtained electric energy.

Said high-frequency signal injection module comprises DC transfer circuit, inverter circuit, high-frequency oscillating circuits, the power amplification circuit that connects in order, be used for converting the electric energy of induction electricity-fetching module output into the high_frequency sine wave signal, and transmitting coil is given in induction.

Said energy conversion module comprises interconnective rectification circuit, filter circuit, current-limiting circuit, DC transfer circuit, is used for converting the alternating current of receiving coil output into direct current, and exports to on-line monitoring equipment.

The high_frequency sine wave signal that said high-frequency signal injection module produces is finally responded to transmitting coil with the mode of coupling.

Transmission method of signal is a form of electromagnetic wave between said transmitting coil and the receiving coil.

The course of work of the present invention: be transferred to the high-frequency signal injection module after the induction electricity-fetching module obtains electric energy; The high-frequency signal injection module converts electric energy into the high frequency simple alternating current signal of telecommunication; Respond to transmitting coil through the mode of inductive coupling, transmitting coil with the high_frequency sine wave signal with form of electromagnetic wave spatial emission towards periphery, this electromagnetic wave signal and high_frequency sine wave signal same frequency; When the self-resonant frequency of receiving coil is consistent with signal frequency; Can make receiving coil generation resonance, at this moment receiving coil converts the electromagnetic wave energy that receives into alternating current and exports to the energy conversion module, and the energy conversion module transfers alternating current to direct current; Export to the on-line monitoring equipment on the transmission line, accomplish power supply.

Beneficial effect of the present invention:

(1) a kind of reliable and stable transmission line on-line monitoring power devices system is provided: the present invention proposes to adopt the resonance wireless technology of transmission of electricity that is coupled; The mode of the energy of responding to the electricity-fetching module collection with wireless transmit is transferred on the transmission tower; Be the on-line monitoring power devices on the shaft tower,, improve output power through increasing new power supply source; Solved traditional supply power mode poor stability, the problem that the duration is short.

(2) the operation persistence and the reliability of raising transmission line on-line monitoring equipment; Effectively avoid accident; Improve line security: the transmission line on-line monitoring power devices system based on wireless technology of transmission of electricity provided by the invention has proposed the Preliminary Applications mode of wireless technology of transmission of electricity in field of power transmission, in conjunction with induction power taking technology; Improve the normal reliability of operation of transmission facility, guarantee line security.

Description of drawings

Fig. 1 is a kind of structure chart of the on-line monitoring power devices system based on wireless technology of transmission of electricity.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention is done to specify further, but execution mode of the present invention is not limited thereto.

Embodiment

As shown in Figure 1, a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity is used for the power supply of the on-line monitoring equipment of transmission line, comprises induction electricity-fetching module, high-frequency signal injection module, transmitting coil, receiving coil, energy conversion module; Said induction electricity-fetching module, high-frequency signal injection module, transmitting coil are installed on the transmission line in order, and said induction electricity-fetching module is connected with the high-frequency signal injection module, and said receiving coil and the energy conversion module that connects successively is installed on the shaft tower.

Said induction electricity-fetching module: be used to obtain the electric energy on the transmission line, and it is transported to the high-frequency signal injection module.

The energy line snare of getting of said induction electricity-fetching module is contained on the transmission line; Induce the electric current of alternation around the transmission line the alternating magnetic fields through the law of electromagnetic induction; Behind front end surge protection circuit, current rectifying and wave filtering circuit, excess voltage protection, reduction voltage circuit, DC/DC translation circuit; Convert alternating current into galvanic current, and flow to the high-frequency signal injection module.

Said high-frequency signal injection module comprises DC transfer circuit, inverter circuit, high-frequency oscillating circuits, the power amplification circuit that connects in order; The direct current that is used for responding to electricity-fetching module output converts the high_frequency sine wave signal into, and responds to transmitting coil with the mode of coupling.

Said transmitting coil with the high_frequency sine wave signal with form of electromagnetic wave spatial emission towards periphery.

Said receiving coil has identical self-resonant frequency with transmitting coil, and receiving coil and transmitting coil be installed in the two ends of electric transmission line isolator, and two coils are coaxial parallel, and the output AC electricity is to the energy conversion module after transmitting coil receives electromagnetic wave.

Said energy conversion module comprises interconnective rectification circuit, filter circuit, current-limiting circuit, DC transfer circuit, is used for converting the alternating current of receiving coil output into direct current, and exports to the on-line monitoring equipment that is installed on the shaft tower, accomplishes power supply.

Transmission coil and receiving coil are installed in the two ends of insulator, so the distance of wireless transmission need surpass the structure length of insulator at least.In general, the insulator structure length of 110kV circuit is about 1.5m, and 220kV is about 2.4m.In addition, resonance be coupled the wireless transmit distance of wireless technology of transmission of electricity be about receiving coil with about 8 times that send coil diameter, need confirm the diameter of coil according to concrete transmitting range.

Said receiving coil can be general copper cash with the material of sending coil, and definite needs of copper cash radius are taken all factors into consideration wave frequency, factors such as coil turn, lead radius, turn-to-turn distance.

The foregoing description is a preferred implementation of the present invention; But execution mode of the present invention is not limited by the examples; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (7)

1. the on-line monitoring power devices system based on wireless technology of transmission of electricity is used for the power supply of transmission line on-line monitoring equipment, it is characterized in that, comprises induction electricity-fetching module, high-frequency signal injection module, transmitting coil, receiving coil, energy conversion module; Said induction electricity-fetching module, high-frequency signal injection module, transmitting coil are installed on the transmission line in order; Said induction electricity-fetching module is connected with the high-frequency signal injection module; Said receiving coil and the energy conversion module that connects successively is installed on the shaft tower, and said transmitting coil has identical self-resonant frequency with receiving coil.
2. a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity according to claim 1 is characterized in that said transmitting coil is coaxial parallel with two ends and two coils that receiving coil is installed in insulator.
3. a kind of on-line monitoring power devices system according to claim 1 based on wireless technology of transmission of electricity; It is characterized in that; Said induction electricity-fetching module comprise in order getting of connecting can coil, front end surge protection circuit, current rectifying and wave filtering circuit, excess voltage protection, reduction voltage circuit, DC/DC translation circuit, the alternating magnetic field that is used for around the transmission line is obtained electric energy.
4. a kind of on-line monitoring power devices system according to claim 1 based on wireless technology of transmission of electricity; It is characterized in that; Said high-frequency signal injection module comprises DC transfer circuit, inverter circuit, high-frequency oscillating circuits, the power amplification circuit that connects in order; The electric energy that is used for responding to electricity-fetching module output converts the high_frequency sine wave signal into, and transmitting coil is given in induction.
5. a kind of on-line monitoring power devices system according to claim 1 based on wireless technology of transmission of electricity; It is characterized in that; Said energy conversion module comprises interconnective rectification circuit, filter circuit, current-limiting circuit, DC transfer circuit; Be used for converting the alternating current of receiving coil output into direct current, and export to on-line monitoring equipment.
6. a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity according to claim 4 is characterized in that, the high_frequency sine wave signal that said high-frequency signal injection module produces is responded to transmitting coil with the mode of coupling.
7. a kind of on-line monitoring power devices system based on wireless technology of transmission of electricity according to claim 2 is characterized in that transmission method of signal is a form of electromagnetic wave between said transmitting coil and the receiving coil.
CN2012103019566A 2012-08-23 2012-08-23 Online monitoring equipment power supply system based on wireless electric power transmission technology CN102832720A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115643A (en) * 2013-01-22 2013-05-22 华南理工大学 Electric transmission line on-line monitoring system based on distribution-type energy capture
CN103487813A (en) * 2013-08-27 2014-01-01 华南理工大学 Electric transmission line wildfire monitoring system and method based on laser radar technique
CN103545939A (en) * 2013-10-24 2014-01-29 国家电网公司 Induction microwave power supply system of online monitoring device
CN103576032A (en) * 2013-11-14 2014-02-12 国家电网公司 On-line detection device and method of power device
CN103605045A (en) * 2013-11-01 2014-02-26 航天科工深圳(集团)有限公司 Power transmission line fault detection device
CN104036921A (en) * 2014-06-05 2014-09-10 中国科学院电工研究所 Magnetically-coupled resonant high-frequency air-core transformer
CN104416254A (en) * 2013-09-10 2015-03-18 南京化工职业技术学院 Wireless electric soldering iron
CN104485756A (en) * 2014-12-04 2015-04-01 珠海许继电气有限公司 Electricity picking device for high-voltage power transmission line
CN106443250A (en) * 2016-09-19 2017-02-22 武汉大学 Electrostatic resistance testing method of high-voltage wireless power supply system
CN106602745A (en) * 2017-01-18 2017-04-26 广东电网有限责任公司电力科学研究院 Wireless power supply method and device for high-voltage on-line monitoring equipment
CN107017704A (en) * 2017-05-22 2017-08-04 武汉大学 A kind of coil inserted insulation is the wireless electric energy transmission device of relaying
CN107560662A (en) * 2016-11-19 2018-01-09 国网河南省电力公司漯河供电公司 A kind of shaft tower remote online overturning-preventing monitoring system

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115643A (en) * 2013-01-22 2013-05-22 华南理工大学 Electric transmission line on-line monitoring system based on distribution-type energy capture
CN103487813B (en) * 2013-08-27 2015-06-03 华南理工大学 Electric transmission line wildfire monitoring system and method based on laser radar technique
CN103487813A (en) * 2013-08-27 2014-01-01 华南理工大学 Electric transmission line wildfire monitoring system and method based on laser radar technique
CN104416254A (en) * 2013-09-10 2015-03-18 南京化工职业技术学院 Wireless electric soldering iron
CN103545939A (en) * 2013-10-24 2014-01-29 国家电网公司 Induction microwave power supply system of online monitoring device
CN103605045A (en) * 2013-11-01 2014-02-26 航天科工深圳(集团)有限公司 Power transmission line fault detection device
CN103605045B (en) * 2013-11-01 2016-05-11 航天科工深圳(集团)有限公司 A kind of failure detection device for power transmission line
CN103576032A (en) * 2013-11-14 2014-02-12 国家电网公司 On-line detection device and method of power device
CN104036921A (en) * 2014-06-05 2014-09-10 中国科学院电工研究所 Magnetically-coupled resonant high-frequency air-core transformer
CN104485756A (en) * 2014-12-04 2015-04-01 珠海许继电气有限公司 Electricity picking device for high-voltage power transmission line
CN106443250A (en) * 2016-09-19 2017-02-22 武汉大学 Electrostatic resistance testing method of high-voltage wireless power supply system
CN107560662A (en) * 2016-11-19 2018-01-09 国网河南省电力公司漯河供电公司 A kind of shaft tower remote online overturning-preventing monitoring system
CN106602745A (en) * 2017-01-18 2017-04-26 广东电网有限责任公司电力科学研究院 Wireless power supply method and device for high-voltage on-line monitoring equipment
CN106602745B (en) * 2017-01-18 2019-06-28 广东电网有限责任公司电力科学研究院 A kind of high pressure on-line monitoring equipment wireless power method and device
CN107017704A (en) * 2017-05-22 2017-08-04 武汉大学 A kind of coil inserted insulation is the wireless electric energy transmission device of relaying

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Application publication date: 20121219

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