CN102709860A - Rural distribution network-orientated DC thawing device with adjustable output voltage - Google Patents
Rural distribution network-orientated DC thawing device with adjustable output voltage Download PDFInfo
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- CN102709860A CN102709860A CN2012101793482A CN201210179348A CN102709860A CN 102709860 A CN102709860 A CN 102709860A CN 2012101793482 A CN2012101793482 A CN 2012101793482A CN 201210179348 A CN201210179348 A CN 201210179348A CN 102709860 A CN102709860 A CN 102709860A
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Abstract
The invention introduces a rural distribution network-orientated DC thawing device with adjustable output voltage. The thawing device comprises a six-pulse rectifier (1), a capacitor filter(2), a chopper (3) and a freewheel diode (4) which are connected in series, wherein the DC output end of the six-pulse rectifier (1) is connected with the input end of the capacitor filter(2); the output end of the capacitor filter(2) is connected with the input end of the chopper (3); and the output end of the chopper (3) is connected with the input end of the freewheel diode (4). When the DC thawing device is in use, the input end of the six-pulse rectifier (1) is connected with an external power, and the output end of the freewheel diode (4) is externally connected with a load of a to-be-thawed line. The thawing device has the advantages that 1, current and voltage harmonic on the input side can be effectively eliminated; 2, the output DC voltage is adjusted continuously; 3, both the size and weight are greatly reduced, as a smoothing reactor is not required to be arranged; and 4, the structure is simple and the maintenance is convenient.
Description
Technical field
The invention belongs to the electrical engineering technical field, be specifically related to a kind of agricultural distribution DC de-icing device of Adjustable Output Voltage, a kind of device that can carry out DC ice melting the lead of rural area transmission line random length.
Background technology
The multi 35kV circuit of traditional serial connection exchanges deicing device, in the ice and snow disaster of southern china in 2008, implements very difficulty of line ice-melting, nature, and 10kV transmission line deicing device just has been difficult to carry out ice-melt more.This has just caused a large amount of rural areas transmission line to fall the accident of rod disconnection.For guaranteeing the rural power grids safe and stable operation and, being that agricultural distribution icing circuit carries out ice-melt to the rural area transmission line timely and effectively, demand a kind of improved practicable agricultural distribution deicing device urgently and occur user's normal power supply.
DC ice melting is because output current is big, and required power supply capacity is little, and efficient is high, in the ice-melt of major network transmission line, has brought into play very big effect.But agricultural distribution line style is complicated, and the ice melting current span that synteny is not corresponding differs greatly.And line length is inconsistent, and therefore required ice melting current span is bigger.And the direct voltage of traditional DC de-icing device output class is limited, the real difficult ice-melt demand that adapts to the multiple circuit of agricultural distribution.
Summary of the invention
The technical problem that the present invention will solve is; Defective to prior art; A kind of agricultural distribution DC de-icing device of Adjustable Output Voltage is provided; Can adjust the output of different direct voltage according to different line loads when using this device that agricultural distribution transmission line is carried out ice-melt, with and adapt to various different circuits in the agricultural distribution ice-melt, the different voltage requirements of line length arbitrarily.
Technical solution of the present invention is, referring to Fig. 1, above-mentioned a kind of agricultural distribution DC de-icing device of Adjustable Output Voltage that supplies is as shown in Figure 1, is composed in series successively by six pulse wave rectifier devices 1, capacitive filter 2, chopper 3 and fly-wheel diode 4.Wherein, the dc output end of said six pulse wave rectifier devices 1 connects the input of said capacitive filter 2.The output of this capacitive filter 2 connects the input of said chopper 3.And the output of this chopper 3 connects the input of said fly-wheel diode 4.
In the said structure of the present invention, the effect of wherein said six pulse wave rectifier devices 1 is to be used to realize that the input side alternating voltage of the agricultural distribution DC de-icing device of this Adjustable Output Voltage changes direct voltage output into; The effect of said capacitive filter 2 is effectively to reduce the voltage that input side electric current and voltage filter are imported, the harmonic content in the electric current; The effect of said chopper 3 is the adjustings that are used to realize output dc voltage, and this chopper 3 has simple to operate, the control characteristics of high efficiency; And fly-wheel diode 4 plays the effect of electric current afterflow ground.
When the agricultural distribution DC de-icing device of the Adjustable Output Voltage of the present invention of said structure used, by the input external AC power supply of its six pulse wave rectifiers device 1, the output of fly-wheel diode 4 was received the ice-thawing electric transmission line load outward.This device utilizes the pressure regulation of controlled power switching device, can realize that 0～100% of rated direct voltage is exported than threshold voltage arbitrarily, thereby can in the rated power scope, carry out DC ice melting by the lead to rural area transmission line random length.
The invention has the beneficial effects as follows:
1), can effectively eliminate input side voltage, current harmonics;
2), can realize that output dc voltage is adjustable continuously;
3), the output of this device need not to dispose smoothing reactor, so overall volume and weight are significantly reduced;
4), simple in structure, easy to maintenance.
Description of drawings
Fig. 1 is the structured flowchart of a specific embodiment of agricultural distribution DC de-icing device of a kind of Adjustable Output Voltage of the present invention, is denoted as among the figure:
1-six pulse wave rectifier devices,
2-capacitive filter,
3-chopper,
4-fly-wheel diode.
Embodiment
Referring to Fig. 1; Shown in Figure 1ly be concrete embodiment of agricultural distribution DC de-icing device of a kind of Adjustable Output Voltage of the present invention, the HCKJZL-8 type 380V-420V that the six pulse wave rectifier devices 1 of this embodiment adopt Hunan China to economize to converge pure Power Tech Corp. Inc. to produce exchanges input six pulse wave rectifier devices; Capacitive filter 2 adopts Hunan China to economize the HCKJLB type capacitive filter that the pure Power Tech Corp. Inc. of remittance produces; Chopper 3 adopts Hunan China to economize the HCKJZB-11 type chopper that the pure Power Tech Corp. Inc. of remittance produces; The ZK800/1200V type diode that the brilliant industry of fly-wheel diode 4 employing Jiangsu Province, China Yixing Cities Electronics Co., Ltd. produces.Said six pulse wave rectifier devices 1, capacitive filter 2, chopper 3 and fly-wheel diode 4 are connected with reference to structured flowchart shown in Figure 1 by above-mentioned technical solution successively.Wherein, the dc output end of six pulse wave rectifier devices 1 connects the input of capacitive filter 2.
The agricultural distribution DC de-icing device of the above-mentioned a kind of Adjustable Output Voltage of the present invention that constitutes thus, on probation through trial-production, the field test operation is proved to be respond well, esy to use, safe and reliable, reaches designing requirement fully.
Claims (1)
1. the agricultural distribution DC de-icing device of an Adjustable Output Voltage; It is characterized in that; It is composed in series by six pulse wave rectifier devices (1), capacitive filter (2), chopper (3) and fly-wheel diode (4) successively; Wherein, The dc output end of said six pulse wave rectifier devices (1) connects the input of said capacitive filter (2), and the output of this capacitive filter (2) connects the input of said chopper (3), and the output of this chopper (3) connects the input of said fly-wheel diode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101793482A CN102709860A (en) | 2012-06-01 | 2012-06-01 | Rural distribution network-orientated DC thawing device with adjustable output voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101793482A CN102709860A (en) | 2012-06-01 | 2012-06-01 | Rural distribution network-orientated DC thawing device with adjustable output voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102709860A true CN102709860A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101793482A Pending CN102709860A (en) | 2012-06-01 | 2012-06-01 | Rural distribution network-orientated DC thawing device with adjustable output voltage |
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| CN (1) | CN102709860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913527A (en) * | 2019-11-12 | 2020-03-24 | 上海铁大电信科技股份有限公司 | Supervision driving circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61210818A (en) * | 1985-03-14 | 1986-09-19 | 住友電気工業株式会社 | Preventor for ice and snow attached on overhead ground wire |
| CN102208792A (en) * | 2011-03-10 | 2011-10-05 | 中国电力科学研究院 | System debug method of movable type direct current ice melting apparatus based on gate turn-off (GTO) device |
| CN202633875U (en) * | 2012-06-01 | 2012-12-26 | 湖南省电力公司科学研究院 | Direct-current ice melting device with adjustable output voltage of rural power distribution network |
-
2012
- 2012-06-01 CN CN2012101793482A patent/CN102709860A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61210818A (en) * | 1985-03-14 | 1986-09-19 | 住友電気工業株式会社 | Preventor for ice and snow attached on overhead ground wire |
| CN102208792A (en) * | 2011-03-10 | 2011-10-05 | 中国电力科学研究院 | System debug method of movable type direct current ice melting apparatus based on gate turn-off (GTO) device |
| CN202633875U (en) * | 2012-06-01 | 2012-12-26 | 湖南省电力公司科学研究院 | Direct-current ice melting device with adjustable output voltage of rural power distribution network |
Non-Patent Citations (1)
| Title |
|---|
| 罗文广 等: "兼具柔性直流输电功能的移动式直流融冰装置的研制", 《大功率变流技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913527A (en) * | 2019-11-12 | 2020-03-24 | 上海铁大电信科技股份有限公司 | Supervision driving circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: HU NAN XIANGDIAN TRIAL RESEARCH TECHNOLOGY CO., LT Free format text: FORMER OWNER: HU NAN XIANGDIAN TRIAL RESEARCH TECHNOLOGY CO., LTD. Effective date: 20121018 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121018 Address after: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Applicant after: Science Research Institute of Hunan Electric Power Co., Ltd. Applicant after: Hunan Xiangdian Electric Power Text & Research Co., Ltd. Applicant after: State Grid Corporation of China Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Applicant before: Science Research Institute of Hunan Electric Power Co., Ltd. Applicant before: Hunan Xiangdian Electric Power Text & Research Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |