CN101604833B - Ground wire deicing device capable of combined use - Google Patents

Ground wire deicing device capable of combined use Download PDF

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Publication number
CN101604833B
CN101604833B CN2009100436113A CN200910043611A CN101604833B CN 101604833 B CN101604833 B CN 101604833B CN 2009100436113 A CN2009100436113 A CN 2009100436113A CN 200910043611 A CN200910043611 A CN 200910043611A CN 101604833 B CN101604833 B CN 101604833B
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China
Prior art keywords
ground wire
control module
phase constant
current control
deicing
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CN2009100436113A
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Chinese (zh)
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CN101604833A (en
Inventor
陆佳政
方针
李波
张红先
蒋正龙
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State Grid Hunan Electric Power Company prevents and reduces natural disasters center
State Grid Corp of China SGCC
State Grid Hunan Electric Power Co Ltd
Original Assignee
Hu'nan Huicui Electric Power Technology Co Ltd
HUNAN INSTITUTE OF POWER Co EXPERIMENT
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Abstract

A ground wire deicing device capable of combined use is disclosed, which is composed of a gasoline engine generator (1), a three-phase constant current control module (2), a regulation control system (3), a digital voltmeter (4), a digital ammeter (5), a shunt (6) and a wrapped enamel-insulated wire (7), wherein, the gasoline engine generator (1) is connected with an input end of the three-phase constant current control module (2). The regulation control system (3) is connected with a control signal end of the three-phase constant current control module (2). The enamel-insulated wire is wrapped on the ground wire prior to the icing of overhead ground wire of power transmission line and is accessed to the ground wire deicing device subsequent to the icing of overhead ground wire. Heat is generated by the ground wire after current passes through the ground wire to thereby melt the ice. Once the deicing current exceeds 50A, more than two devices can be combined for simultaneous use. The invention: 1) can deice the overhead ground wires in various models; 2) can adjust the range of the deicing current; 3) can use the device in a combined manner; 4) solves the difficult problem of power source; and 5) reduces risk.

Description

A kind of ground wire deicing device of use capable of being combined
Technical field
The invention belongs to the electrical engineering technical field, relate in particular to a kind of ground wire deicing device of use capable of being combined, this device is applicable to transmission line overhead ground wire ice-melt processing, freezes the broken string and the faults such as causing the transmission line tripping operation on lead that drops to avoid the transmission line overhead ground wire because of icing.
Background technology
In recent years, because of being subjected to the influence of freezing disaster, a large amount of transmission line ground wire broken string accidents take place repeatedly.In the ice damage that takes place as Hunan China in 2008,500kV transmission line ground wire 322 places that break, 220kV transmission line ground wire 432 places that break, 110kV transmission line ground wire 1017 places that break, 35kV transmission line ground wire 296 places that break.The generation of accident has caused the interruption of electrical network communication cable on the one hand, causes tripping operation to cause circuit on lead owing to dropping behind the ground wire broken string on the one hand and decommissions.At present, Hunan Electric Grid is with its abundant reply experience, taked multiple effective measure, as the great current deicing mode lead is carried out AC and DC ice-melt processing etc., but because ground wire is different with the lead operational mode, there are situations such as segmentation and multipoint earthing, so the ice-melt of adopting the lead ice-melting mode can't effectively implement ground wire is handled.So someone unties all ground wire grounded ends in the winter time ice period, makes its insulation against ground temporarily, ground wire directly applies electric current to scheme ice-melt after freezing.This kind ice-melting mode workload is big, obtain ice-melt power supply difficulty, and the distance range of ice-melt is restricted.
Summary of the invention
The technical problem to be solved in the present invention is, at the defective of prior art, design a kind of can be to the device of transmission line overhead ground wire ice-melt, the overhead ground wire after utilizing this device to icing carries out ice-melt to be handled, and to reduce execute-in-place, avoids network load to shift.And do not need the deicing personnel to climb up the transmission line overhead ground wire, reduce transmission line causes tripping operation because of freezing disaster failure rate greatly.
Technical solution of the present invention is, the ground wire deicing device of above-mentioned use capable of being combined, referring to Fig. 1, it is made up of gasoline engine generator 1, three-phase constant-current control module 2, regulation and control system 3, digital voltmeter 4, digital ammeter 5, shunt 6 and winding enamelled wire 7.Wherein said gasoline engine generator 1 electricity connects the input of described three-phase constant-current control module 2.Described regulation and control system 3 electricity connect the control signal end of three-phase constant-current control module 2.The positive pole and the negative pole of described digital voltmeter 4 three-phase constant-current control module 2 dc output ends in parallel.Described digital ammeter 5 is in parallel with described shunt 6, and is serially connected on the output head anode of three-phase constant-current control module 2 by this shunt 6.The two ends of described winding enamelled wire 7, an end electricity connects the positive pole of three-phase constant-current control module 2, and other end electricity connects the negative pole of three-phase constant-current control module 2.
Operation principle of the present invention is: before transmission line overhead ground wire icing, enamelled wire is wrapped on the ground wire; Behind the overhead ground wire icing, the enamelled wire electricity that twines is inserted the ground wire deicing device dc output end, make it form the loop.Ground wire deicing device provides three-phase alternating-current supply by gasoline engine generator, and the three-phase constant-current control module mainly acts on AC rectification is become direct current.Be wrapped in have direct current to pass through on the enamelled wire on the overhead ground wire after, thereby can produce eddy current makes overhead ground wire produce heat thawing icing, can utilize 3 pairs of above-mentioned ice melting current 0~50A scopes of regulation and control system adjustable continuously, to guarantee that the output DC source can meet design requirement, prevent that the too high electricity of electric current from burning out lead, prevent also that simultaneously electric current from crossing low ice sheet on the lead can't the thawing.
When the ground wire deicing electric current of needs thawing icing surpasses 50A, the ground wire deicing device of this use capable of being combined more than two capable of being combined uses simultaneously, compound mode is simple, with reference to accompanying drawing 2, only needing wherein, the positive pole/negative pole of the three-phase constant-current control module 2 of a table apparatus gets final product with the corresponding connection of positive pole/negative pole of the three-phase constant-current control module 2 of another table apparatus.
The invention has the beneficial effects as follows:
1), can handle carrying out DC ice melting behind the various model overhead ground wires winding enamelled wires;
2), DC ice melting current 0~100A scope is adjustable continuously;
3), this device can make up in parallel the use, to adapt to the demand of different length transmission line ice-melt;
4), solved traditional ice-melting mode power supply and obtained difficult problem, by the gasoline engine generator power supply, reduced the loaded down with trivial details work that the overhead ground wire insulation against ground is required;
5), do not need manually to step on tower, thereby greatly reduce issuable thus security risk.
Description of drawings
Fig. 1 is the structured flowchart of a specific embodiment of the ground wire deicing device of a kind of use capable of being combined of the present invention;
Fig. 2 is the circuit reference diagram that two playscript with stage directions devices are used in combination state.
Being denoted as in above Fig. 1~2:
The 1-gasoline engine generator,
2-three-phase constant-current control module,
The 3-regulation and control system,
The 4-digital voltmeter,
The 5-digital ammeter,
The 6-shunt,
7-twines enamelled wire.
Embodiment
Embodiment 1: the ground wire deicing device of the use capable of being combined of this embodiment of the invention, referring to Fig. 1, its gasoline engine generator 1 adopts the too foreign motor of Japanese TAIYO Co., Ltd. to make the BVT-3000A generator of being produced, rated power 22.0kVA, peak power output 22.5VKA, power factor (PF) 0.8, frequency 50HZ rated voltage 220/380V, 3000 rev/mins of rated current 30.3A, rotating speeds; The MSJ-HL-250 constant current control module of the Chinese Zibo of three-phase constant-current control module 2 employings milky way high-tech development Co., Ltd; Regulation and control system 3 adopts Hunan China to converge the HYKZ-0820A type control circuit board of pure Power Tech Corp. Inc. development; Digital voltmeter 4 adopts the pull together XL5235V-2 digital voltmeter of Electronics Co., Ltd. of Shaanxi; Digital ammeter 5 adopts the pull together XL5235A-1 digital ammeter of Electronics Co., Ltd. of Shaanxi; Shunt 6 adopts river, the Shanghai cypress electronics technology FL-275mV200A of Co., Ltd direct current shunt; Twine WRP-2.5, specification 6 * 2.5mm that enamelled wire 7 selects for use Yangzhou Xing Jiang epoch Electronics Co., Ltd. to produce 2The winding enamelled wire.Connect and compose by technical solution and circuit shown in Figure 1 between above-mentioned gasoline engine generator 1, three-phase constant-current control module 2, regulation and control system 3, digital voltmeter 4, digital ammeter 5, shunt 6 and the winding enamelled wire 7.It is the input that gasoline engine generator 1 connects three-phase constant-current control module 2.Regulation and control system 3 connects the control signal end of three-phase constant-current control module 2.The positive pole and the negative pole of digital voltmeter 4 three-phase constant-current control module 2 dc output ends in parallel.Shunt 6 is serially connected on the output head anode of three-phase constant-current control module 2, and digital ammeter 5 is in parallel with shunt 6.Twine the positive and negative electrode that enamelled wire 7 two ends connect three-phase constant-current control module 2 dc output ends respectively.The present embodiment of Gou Chenging is regulated output DC stream size by regulation and control system 2 thus; Digital ammeter 5 shows place average anode current size; Digital voltmeter 4 shows the VD size.
Embodiment 2: the gasoline engine generator 1 of this embodiment, three-phase constant-current control module 2, regulation and control system 3, digital voltmeter 4, digital ammeter 5, shunt 6 and twine the drawing materials with embodiment 1 of enamelled wire 7, the annexation between them is also with embodiment 1.Different is that in the present embodiment, the ground wire deicing device of use capable of being combined of the present invention is two.Two this device combination couplings, its connecting mode is circuit as shown in Figure 2.Connecting mode is simple, only positive pole/the negative pole of one of them three-phase constant-current control module 2 need be docked with the positive pole/negative pole of the three-phase constant-current control module 2 of another device to get final product.

Claims (1)

1. the ground wire deicing device of a use capable of being combined, it is characterized in that, it is by gasoline engine generator (1), three-phase constant-current control module (2), regulation and control system (3), digital voltmeter (4), digital ammeter (5), shunt (6) and winding enamelled wire (7) are formed, wherein said gasoline engine generator (1) electricity connects the input of described three-phase constant-current control module (2), described regulation and control system (3) electricity connects the control signal end of three-phase constant-current control module (2), the positive pole and the negative pole of described digital voltmeter (4) three-phase constant-current control module in parallel (2) dc output end, described digital ammeter (5) is in parallel with described shunt (6), and be serially connected on the output head anode of three-phase constant-current control module (2) by this shunt (6), the two ends of described winding enamelled wire (7), one end electricity connects the positive pole of three-phase constant-current control module (2), and other end electricity connects the negative pole of three-phase constant-current control module (2).
CN2009100436113A 2009-06-05 2009-06-05 Ground wire deicing device capable of combined use Active CN101604833B (en)

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CN101604833B true CN101604833B (en) 2011-01-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102694475A (en) * 2012-06-01 2012-09-26 湖南省电力公司科学研究院 Automatic current-sharing DC ice melting device with parallelly-connected rectifier bridges

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Publication number Priority date Publication date Assignee Title
CN102510040B (en) * 2011-11-15 2014-05-21 徐望圣 Deicing device for ground wire
CN103116114B (en) * 2013-01-23 2015-08-19 中国南方电网有限责任公司超高压输电公司检修试验中心 Fault distance-finding method under a kind of DC de-icing device ground wire deicing pattern and system
CN105322493B (en) * 2014-06-16 2017-07-07 中国南方电网有限责任公司超高压输电公司 A kind of ground wire deicing automatic connection device
CN105281275B (en) * 2014-06-16 2017-07-21 南京电力金具设计研究院有限公司 A kind of electrical control gear for ground wire deicing automatic connection device
CN109347041B (en) * 2018-12-06 2020-01-24 四川大学 Interline lossless three-phase current divider and design and control method

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Correct: Research Institute of Hunan province electric power company| 410007 Hunan province Changsha Dong Tang hydropower Street No. 79|Hunan huicui Electric Power Technology Co. Ltd.| Power Grid Corp

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