CN103107738A - Power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference - Google Patents

Power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference Download PDF

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Publication number
CN103107738A
CN103107738A CN2013100246539A CN201310024653A CN103107738A CN 103107738 A CN103107738 A CN 103107738A CN 2013100246539 A CN2013100246539 A CN 2013100246539A CN 201310024653 A CN201310024653 A CN 201310024653A CN 103107738 A CN103107738 A CN 103107738A
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China
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thermo
temperature difference
electric generation
power supply
resistance
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CN2013100246539A
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Chinese (zh)
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汪雄海
何中杰
汪昆
陆铃霞
张龙
王浩
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

Abstract

The invention discloses a power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference. The power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference comprises a heat transmission layer, heat insulating layers, five temperature difference generating slices, a fixing ring, a heat dissipation layer and a stabilized voltage supply encapsulated circuit. The five temperature difference generating slices and one face of the stabilized voltage supply encapsulated circuit are respectively pasted on one side face of the heat transmission layer, the other faces of the five temperature difference generating slices and the stabilized voltage supply encapsulated circuit are respectively pasted with the heat dissipation layers, and the heat insulation layers are arranged between two adjacent temperature difference generating slices and between the temperature difference generating slices and the stabilized voltage supply encapsulated circuit. The temperature difference generating slices, the heat dissipation slice and the stabilized voltage supply encapsulated circuit are fixed through fixed rings. The five temperature difference generating slices are connected in series in sequence and two ends of the temperature difference generating slices are connected with the stabilized voltage supply encapsulated circuit. The power supply device for seafloor power cable failure diagnosis is capable of generating electricity through temperature difference and has the advantages of being small in size, simple in installation and maintenance work, low in cost and good in reliability of arrangement working.

Description

Sea electric power cable failure diagnosis supply unit based on thermo-electric generation
Technical field
The present invention relates to a kind of sea electric power cable failure diagnosis supply unit based on thermo-electric generation.
Background technology
Submarine cable (extra large cable) minute sea electric power cable and submarine communication cable.Along with the intensification day by day of marine economy, as important electric power transfer carrier, the application surface of power cable will be opened up extensively day by day.Hai Lanxianlu is long, and environments such as subsea of living in is complicated, is subject to trawler ship anchor, marine organisms and even seabed crustal motion and destroys, in case the processing reparation difficulty that breaks down is large, easily causes electric power transfer to interrupt, and produces huge safety problem and economic loss.How to realize that the pre-diagnosis of current-carrying operation power cable fault and the pre-report of fault type and the judgement timely and accurately that rear abort situation occurs fault are still a difficult problem that needs to be resolved hurrily so far, common technology is after pending fault occurs at present, relies on measuring terminals to resistance value estimation fault distance between short dot.There are the problems such as Trouble Report time lag, fault location error be large in this conventional method.Accurately must adopt the sensor measuring technology in the location if solve the extra large cable fault pre-diagnosing of long distance and fault, and various kinds of sensors work all be unable to do without working power, but the operating mode that at present general power supply is difficult to be competent at the seabed operation.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, a kind of sea electric power cable failure diagnosis supply unit based on thermo-electric generation is provided.This power supply can satisfy the electricity consumption of the multinode, sensor and other coherent detection diagnostic devices that are distributed on power cable, for long apart from Operation Condition for Power Cable do Real Time Monitoring, the timely early warning weak electricity system of failure diagnosis provides permanent electric energy support.
The objective of the invention is to be achieved through the following technical solutions: a kind of supply unit of using based on the sea electric power cable failure diagnosis of thermo-electric generation, it comprises: heat transfer layer, thermal insulation layer, five thermo-electric generation sheets, retainer ring, heat dissipating layer and stabilized voltage power supply encapsulated circuits; Wherein, described heat transfer layer is that the center is the regular hexahedron metalwork of circular hole, five thermo-electric generation sheets with add on the side that the one side that encapsulates voltage-stabilized source circuit board is attached to respectively regular hexahedron, their another side all posts heat dissipating layer, embed thermal insulation layer between adjacent thermo-electric generation sheet and between thermo-electric generation sheet and stabilized voltage power supply encapsulated circuit, thermal insulation layer, thermo-electric generation sheet, heat dissipating layer and stabilized voltage power supply encapsulated circuit are fixed by retainer ring; Five thermo-electric generation sheets are connected successively, two ends access stabilized voltage power supply encapsulated circuit.
further, described stabilized voltage power supply encapsulated circuit is by voltage-stabiliser tube U1, triode Q1, two capacitor C 1, C2 and three resistance R 1, R2, R3 forms, the positive pole of the circuit that is composed in series by five thermo-electric generation sheets 3 connects respectively an end of capacitor C 1, one end of resistance R 1 and the collector electrode of triode Q1, another termination of resistance R 1 connects respectively an end of capacitor C 2, the negative electrode of the base stage of triode Q1 and voltage-stabiliser tube U1, the other end of resistance C2 connects respectively the control utmost point of voltage-stabiliser tube U1, resistance R 2 and resistance R 3, the emitter of another termination triode Q1 of resistance R 2, and as the positive pole of supply unit, the other end of resistance R 3, the anode of voltage-stabiliser tube U1, the other end of capacitor C 1 all connects the negative pole of the circuit that is composed in series by five thermo-electric generation sheets 3, and as the negative pole of supply unit.
Beneficial effect of the present invention is: the electric energy that the present invention utilizes the temperature difference of seabed current-carrying power cable and peripheral seawater to produce, obtain through suitably processing the burning voltage that can be used for failure detector work, solved fault test set short of electricity source under conventional thinking, and an inoperable difficult problem.And then make that under complex situations, compartment system failure predication and alarm are achieved.The characteristics such as this device volume is little, installation, maintenance work are simple, and cost is low, and the device functional reliability is good.
Description of drawings
Fig. 1 is based on the left side view of the sea electric power cable power supply deriving means of thermo-electric generation;
Fig. 2 is based on the right side view of the sea electric power cable power supply deriving means of thermo-electric generation;
Fig. 3 is based on the vertical view of the sea electric power cable power supply deriving means of thermo-electric generation;
Fig. 4 is based on the cross section view of the sea electric power cable power supply deriving means of thermo-electric generation;
Fig. 5 is thermo-electric generation sheet series circuit schematic diagram;
Fig. 6 is that voltage stabilizing circuit and encapsulation consist of schematic diagram;
In figure, heat transfer layer 1, thermal insulation layer 2, thermo-electric generation sheet 3, retainer ring 4, heat dissipating layer 5, stabilized voltage power supply encapsulated circuit 6.
Embodiment
The present invention is based on the supply unit that the sea electric power cable failure diagnosis of thermo-electric generation is used, comprising: heat transfer layer 1, thermal insulation layer 2, five thermo-electric generation sheets 3, retainer ring 4, heat dissipating layer 5 and stabilized voltage power supply encapsulated circuits 6.Wherein, heat transfer layer 1 is that the center is the regular hexahedron metalwork of circular hole, five thermo-electric generation sheets 3 with add on the side that the one side that encapsulates voltage-stabilized source circuit board 6 is attached to respectively regular hexahedron, their another side all posts heat dissipating layer 5, embed thermal insulation layer 2 between adjacent thermo-electric generation sheet 3 and between thermo-electric generation sheet 3 and stabilized voltage power supply encapsulated circuit 6, thermal insulation layer 2, thermo-electric generation sheet 3, heat dissipating layer 5 and stabilized voltage power supply encapsulated circuit 6 are fixing by retainer ring 4; Five thermo-electric generation sheets 3 are connected successively, two ends access stabilized voltage power supply encapsulated circuit 6.
Heat transfer layer 1 and the heat dissipating layer 5 all metal material (as aluminium alloy, copper) of optional use with good heat conductive heat dispersion prepare.
stabilized voltage power supply encapsulated circuit 6 is by voltage-stabiliser tube U1, triode Q1, two capacitor C 1, C2 and three resistance R 1, R2, R3 forms, the positive pole (A that Fig. 5 is connected with Fig. 6) of the circuit that is composed in series by five thermo-electric generation sheets 3 connects respectively an end of capacitor C 1, one end of resistance R 1 and the collector electrode of triode Q1, another termination of resistance R 1 connects respectively an end of capacitor C 2, the negative electrode of the base stage of triode Q1 and voltage-stabiliser tube U1, the other end of resistance C2 connects respectively the control utmost point of voltage-stabiliser tube U1, resistance R 2 and resistance R 3, the emitter of another termination triode Q1 of resistance R 2, and as the positive pole of supply unit, the other end of resistance R 3, the anode of voltage-stabiliser tube U1, the other end of capacitor C 1 all connects the negative pole (B shown in Fig. 5 and Fig. 6) of the circuit that is composed in series by five thermo-electric generation sheets 3, and as the negative pole of supply unit.
Power cable passes the circular hole of heat transfer layer 1, the exodermis of power cable and heat transfer layer 1 close contact, when operation evolution of heat of power cable current-carrying is passed on thermo-electric generation sheet 3 and face that heat transfer layer 1 contacts by heat transfer layer 1, make this face heat up, and the another side of thermo-electric generation sheet 3 contacts with heat dissipating layer 5, thereby keep identical with the environments such as subsea temperature, make the thermo-electric generation sheet 3 between heat transfer layer 1 and heat dissipating layer 5 produce the obvious temperature difference, this temperature difference produces electric energy, processes through being connected in series voltage stabilizing the DC power supply that can obtain the relevant voltage grade; The output of this continuous-current plant links with the power input of coherent detection sensor power consumption equipment, just can detect to get fault message on submarine cable.
Embodiment
heat transfer layer 1 is a metalwork that the center is the regular hexahedron of circular hole, realize for ease of site operation, this center is that two isosceles trapezoid parts take the regular hexahedron face as the boundary that the metalwork of the regular hexahedron of circular hole is cut open by the diagonal angle are harmonious and form, the center of circle, center diameter is slightly less than and equals cable size, coat the good heat conductive silica gel of thermal diffusivity during installation in the inboard of metal casting heat transfer layer 1, two independent metalworks are close to around extra large cable are harmonious, and at outer surface, two independent metalwork joints are engaged togather, heat transfer layer 1 material can adopt thermal conductivity good, quality is light, the metal that cost is low, as adopt aluminium, thermal insulation layer 2 materials can be selected the material of good heat-insulation effect, surround and be close to as rubber and be arranged on around metalwork heat transfer layer 1 and cable.Anticorrosive water-proof coating can adopt epoxy resin or PU coating etc.Above-mentioned thermo-electric generation sheet 3 adopts TEGM thermo-electric generation sheet, and (every generating sheet is when the temperature difference reaches more than 50 degrees centigrade, exportable 2.4V direct voltage during bringing onto load), can be according to the voltage needs, to be connected in series with positive and negative electrode between thermo-electric generation sheet and sheet, the A end that last anode is connected with voltage-stabilized power supply circuit connects, the B end that the negative pole of another sheet is connected with voltage-stabilized power supply circuit connects, and sees Fig. 5 and Fig. 6.
A kind of formation of voltage-stabilized power supply circuit 6 is made of the mode of connection such as Fig. 6 as shown in Figure 6 resistance (R1, R2, R3), electric capacity (C1, C2), triode (Q1) and voltage stabilizing chip (U1).The DC power supply output cathode connects the sensor circuit positive pole, and dc power cathode connects the sensor circuit negative pole.In Fig. 5 and Fig. 6, main devices type selecting and parameter are as follows:
1, thermo-electric generation sheet
The TEGM of the thermo-electric generation sheet peltier.BPB company in Fig. 5 sets up constant continuing between cold and hot surface
During the temperature difference 55 degree (cold junction 5 is spent hot junction 60 degree), determination data is as follows:
Size: 40mmx40mm,
Open circuit voltage: 3.0V,
Matched load resistance: 3
Figure 500668DEST_PATH_IMAGE001
,
Matched load output voltage: 2.4V,
Output current: 0.75A,
Power output: 2.4W,
Maximum heatproof 200 degree of device, the interior welds melting temperature is 250 degree
2, voltage-stabilizing device
The TL431 that U1 in voltage stabilizing circuit Fig. 6 can use Texas Instrument to produce, this device is the three end adjustable shunt reference sources that good thermal stability is arranged, in TL431, when only having voltage when reference edge very near 2.5V, just have stable (unsaturation) electric current in triode and pass through.
The recommended work condition of table 1:TL431
Condition Symbol Minimum value Maximum Unit
Negative electrode is to anode voltage V KA 2.5 36 V
Cathode current I K 1.0 100 mA
The TL431 pipe that is in steady-working state can just can at random arrange output voltage for from Vref(2.5V based on two divider resistances) to the interior any value of 36V scope.
3, triode
Q1 in voltage stabilizing circuit Fig. 6 can use 2N3904:
Transistor types: NPN, electric current-collector electrode (Ic) (maximum): 1A, Dian Ya – collector emitter punctures (maximum): 80V.

Claims (2)

1. supply unit of using based on the sea electric power cable failure diagnosis of thermo-electric generation, it is characterized in that, it comprises: heat transfer layer (1), thermal insulation layer (2), five thermo-electric generation sheets (3), retainer ring (4), heat dissipating layer (5) and stabilized voltage power supply encapsulated circuit (6) etc.; Wherein, described heat transfer layer (1) is that the center is the regular hexahedron metalwork of circular hole, five thermo-electric generation sheets (3) are attached to respectively on a side of regular hexahedron with the one side that adds encapsulation voltage-stabilized source circuit board (6), their another side all posts heat dissipating layer (5), embed thermal insulation layer (2) between adjacent thermo-electric generation sheet (3) and between thermo-electric generation sheet (3) and stabilized voltage power supply encapsulated circuit (6), thermal insulation layer (2), thermo-electric generation sheet (3), heat dissipating layer (5) and stabilized voltage power supply encapsulated circuit (6) are fixing by retainer ring (4); Five thermo-electric generation sheets (3) are connected successively, two ends access stabilized voltage power supply encapsulated circuit (6).
2. the supply unit of using based on the sea electric power cable failure diagnosis of thermo-electric generation according to claim 1, it is characterized in that, described stabilized voltage power supply encapsulated circuit (6) is by voltage-stabiliser tube U1, triode Q1, two capacitor C 1, C2 and three resistance R 1, R2, the compositions such as R3, the positive pole of the circuit that is composed in series by five thermo-electric generation sheets (3) connects respectively an end of capacitor C 1, one end of resistance R 1 and the collector electrode of triode Q1, the other end of resistance R 1 connects respectively an end of capacitor C 2, the negative electrode of the base stage of triode Q1 and voltage-stabiliser tube U1, the other end of resistance C2 connects respectively the control utmost point of voltage-stabiliser tube U1, resistance R 2 and resistance R 3, the emitter of another termination triode Q1 of resistance R 2, and as the positive pole of supply unit, the other end of resistance R 3, the anode of voltage-stabiliser tube U1, the other end of capacitor C 1 all connects the negative pole of the circuit that is composed in series by five thermo-electric generation sheets (3), and as the negative pole of supply unit.
CN2013100246539A 2013-01-23 2013-01-23 Power supply device for seafloor power cable failure diagnosis capable of generating electricity through temperature difference Pending CN103107738A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106443366A (en) * 2016-12-16 2017-02-22 浙江海洋大学东海科学技术学院 Submarine cable maintenance device
CN108322094A (en) * 2017-01-18 2018-07-24 全球能源互联网欧洲研究院 For the energy collecting device of power supply system, monitoring system and wireless sensor node
CN108344929A (en) * 2018-01-15 2018-07-31 长沙理工大学 XLPE cable circulating current fault based on thermo-electric generation monitors system
CN116593797A (en) * 2023-04-17 2023-08-15 江苏希波电气科技有限公司 Energy-saving test system and method for cable current circulation heating test

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US4805454A (en) * 1986-08-11 1989-02-21 Levert Francis E Continuous fluid level detector
WO2012003115A2 (en) * 2010-07-01 2012-01-05 Chevron U.S.A. Inc. System, apparatus, and method for monitoring a subsea flow device
CN202280532U (en) * 2011-01-07 2012-06-20 吉林大学 Novel thermoelectric converter

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JPS5644646B2 (en) * 1977-10-27 1981-10-21
US4805454A (en) * 1986-08-11 1989-02-21 Levert Francis E Continuous fluid level detector
WO2012003115A2 (en) * 2010-07-01 2012-01-05 Chevron U.S.A. Inc. System, apparatus, and method for monitoring a subsea flow device
CN202280532U (en) * 2011-01-07 2012-06-20 吉林大学 Novel thermoelectric converter

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106443366A (en) * 2016-12-16 2017-02-22 浙江海洋大学东海科学技术学院 Submarine cable maintenance device
CN106443366B (en) * 2016-12-16 2018-12-18 浙江海洋大学东海科学技术学院 A kind of submarine cable maintenance device
CN108322094A (en) * 2017-01-18 2018-07-24 全球能源互联网欧洲研究院 For the energy collecting device of power supply system, monitoring system and wireless sensor node
CN108344929A (en) * 2018-01-15 2018-07-31 长沙理工大学 XLPE cable circulating current fault based on thermo-electric generation monitors system
CN116593797A (en) * 2023-04-17 2023-08-15 江苏希波电气科技有限公司 Energy-saving test system and method for cable current circulation heating test
CN116593797B (en) * 2023-04-17 2023-12-08 广州中电电力发展有限公司 Energy-saving test system and method for cable current circulation heating test

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Application publication date: 20130515