CN202957555U - Alternating current ice melting device of power distribution line - Google Patents
Alternating current ice melting device of power distribution line Download PDFInfo
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- CN202957555U CN202957555U CN 201220619385 CN201220619385U CN202957555U CN 202957555 U CN202957555 U CN 202957555U CN 201220619385 CN201220619385 CN 201220619385 CN 201220619385 U CN201220619385 U CN 201220619385U CN 202957555 U CN202957555 U CN 202957555U
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- ice melting
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Abstract
The utility model belongs to the field of ice melting of a power distribution line and specifically provides an alternating current ice melting device of the power distribution line. The ice melting device is composed of a group of single-phase thyristor valves, an alternating current electric reactor, a bypass single-phase isolating switch and three single-phase isolating switches. The input end of a breaker is connected with an ice melting power supply, the output end of the breaker is respectively connected with the input ends of single-phase isolating switches on a three-phase line, and the output ends of the single-phase isolating switches are connected with a line with ice to be melted. The single-phase thyristor valves and the alternating current electric reactor are connected between the output end of the breaker at any phase and the input ends of the single-phase isolating switches in series, and two ends of alternating current electric reactor are connected with the bypass single-phase isolating switch in parallel. A power distribution transformer separates alternating current and conducts direct current, the power distribution transformer does not need to be disassembled when the line is used for alternating current ice melting, huge workload of disassembly of the power distribution transformer in direct current ice melting is reduced, and continuous adjustment of ice melting current is achieved through adjustment of sizes of trigger angles of the single-phase thyristor valves.
Description
Technical field
The utility model belongs to distribution line ice-melt field, is specially a kind of distribution line AC ice melting device.
Background technology
Recent years, the Changes in weather multiterminal, extreme weather is frequently existing, sleet and ice and snow disaster can cause that electrical network machinery and electric property sharply descend, cause the electrical network icing, ultra-high-tension power transmission line short-term and the accident of falling the tower have had a strong impact on the safe operation of electrical network, cause large-area power outage, over nearly 30 years, large tracts of land ice and snow disaster we especially the occurrence frequency of southern area constantly strengthen, power circuit icing and accumulated snow can cause the tripping operation, broken string of circuit, the accidents such as bar, conductor galloping, insulator arc-over, communication disruption of falling.According to incompletely statistics, from 1954 to 2008, our various places 6kV and above electric pressure electrical network, comprise that power circuit, transformer station, railway power system etc. have more than 1000 various icing disaster, especially big ice damage in 2008 particularly, brought huge loss to national economy and social life, social influence is huge.
Along with economic fast development, the increase of electrical network electricity consumption area coverage, the anti-icing and deicing problem also will become one of key technology of power network safety operation, so the research of de-icing techniques and practice and seem most important and urgent.
The main de-icing method adopted has machinery (vibration) formula, the large class de-icing method of electrothermal two at present.It is that ice and snow comes off that the mechanical type ice-melting mode adopts the method for vibration wire, and characteristics are simple to operate, and without the waste electric energy, but its shortcoming is to be undertaken by shelves, and speed is slow, in the situation that the severe operating difficulties of environment.The electrothermal ice melting mode, utilize the large electric current that the end short circuit of circuit is produced wire-heated to be reached to the purpose of ice-melt, with the mechanical type ice-melting mode, compare, the advantage of electrothermal ice melting technology is that the speed of ice-melt is fast, not frozen by ground and the impact of accumulated snow.The electrothermal ice melting mode has AC great current ice-melting mode and DC great current deicing mode, two kinds of all extensive uses in electrical network of mode, its each have their own advantage at present.But the power distribution network ice-melt for 10kV, due to a lot of distribution transformer that distributed in the whole piece distribution line, if use the DC de-icing device ice-melt, distribution transformer all must be opened from line interruption so, so just caused very large workload, if do not disconnect the direct ice-melt of distribution transformer, distribution transformer is shunted direct current so, make the electric current of DC ice-melting reduce, do not reach the effect of ice-melt, and due to the reason of direct current by distribution transformer, will certainly cause the damage of distribution transformer, so the mode significant discomfort for the power distribution network DC great current deicing of 10kV is used.
The utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of technical scheme of distribution line AC ice melting device.
Described distribution line AC ice melting device, this deicing device input connects the ice-melt power supply through circuit breaker, output connects by DC ice-melting, it is characterized in that described deicing device is comprised of bypass to single-phase isolating switch with single-phase isolating switch and three one group of single-phase silicon-controlled valve, AC reactor,, the input of described circuit breaker is connected with the ice-melt power supply, the output of circuit breaker connects respectively the input of the single-phase isolating switch on three-phase line, the output of single-phase isolating switch with by DC ice-melting, be connected; Described single-phase silicon-controlled valve and AC reactor are serially connected between the input of the output of circuit breaker of arbitrary phase and single-phase isolating switch, at the AC reactor two ends, are arranged in parallel the bypass single-phase isolating switch.
Described distribution line AC ice melting device, is characterized in that described three are respectively the isolated switch of A, the isolated switch of B and the isolated switch of C to single-phase isolating switch.
The utility model is simple in structure, utilizes distribution transformer every the characteristic that exchanges perfectly straight stream, makes and do not need to remove distribution transformer when circuit is exchanged to ice-melt, has reduced the huge workload that needs to remove distribution transformer in the DC ice melting; By regulating the size of single-phase silicon-controlled valve Trigger Angle, realized the adjustable continuously of ice melting current, and the power supply 10kV bus of ice-melt also obtains than being easier to.
The accompanying drawing explanation
Fig. 1 is electrical structure diagram of the present utility model;
Fig. 2 is the electric hookup of the utility model during to the ice-melt of 10KV distribution line;
In figure: the single-phase silicon-controlled valve of 1-; The 2-AC reactor; The isolated switch of 3-A; The isolated switch of 4-B; The isolated switch of 5-C; 6-bypass single-phase isolating switch; The 7-distribution transformer; The 8-circuit breaker.
Embodiment
Below in conjunction with Figure of description, the utility model is described further:
The distribution line AC ice melting device, by one group of single-phase silicon-controlled valve 1, an AC reactor 2,, bypass is formed single-phase isolating switch with single-phase isolating switch 6 and three, this deicing device input connects the ice-melt power supply through circuit breaker 8, output connects by DC ice-melting, is provided with several distribution transformers 7 on DC ice-melting; Particularly, the input of circuit breaker 8 is connected with the ice-melt power supply, the output of circuit breaker 8 connects respectively the input of the single-phase isolating switch (the isolated switch of A, the isolated switch of B and the isolated switch of C) on three-phase line, the output of single-phase isolating switch with by DC ice-melting, be connected; Single-phase silicon-controlled valve 1 and AC reactor 2 are serially connected between the input of the output of circuit breaker of arbitrary phase and single-phase isolating switch, at AC reactor 2 two ends, are arranged in parallel single-phase isolating switch 6 for bypass; Above-mentioned three are respectively the isolated switch 3 of A, the isolated switch 4 of B and the isolated switch 5 of C to single-phase isolating switch.
The de-icing method of above-mentioned distribution line AC ice melting device, take that to be serially connected between the input of the output of A phase circuit breaker and the isolated switch of A by single-phase silicon-controlled valve 1 and AC reactor 2 be example (at the AC reactor two ends, being arranged in parallel the bypass single-phase isolating switch), during ice-melt, circuit breaker 8 inputs are received on the ice-melt power supply, and will be by the end short circuit of DC ice-melting, control and exchange ice melting current and make it be greater than the minimum ice melting current of wire but the safety electric flow valuve that is less than wire by the Trigger Angle that changes single-phase silicon-controlled valve 1, thereby realize the safe ice-melt of distribution line,
If the distribution line by ice-melt is long, in the situation that the full conducting of single-phase silicon-controlled valve, ice melting current still, lower than the minimum ice melting current of wire, is used bypass the single-phase isolating switch closure, by the AC reactor bypass, now ice-melt choosing realizes by the isolated switch of B and the isolated switch of C mutually:
1) the isolated switch closure of B, the isolated switch opens of C, to A phase and B phase line ice-melting;
2) the isolated switch closure of C, the isolated switch opens of B, to A phase and C phase line ice-melting.
Also single-phase silicon-controlled valve 1 and AC reactor 2 can be serially connected between the input of the output of B phase circuit breaker and the isolated switch of B, or single-phase silicon-controlled valve 1 and AC reactor 2 are serially connected between the input of the output of C phase circuit breaker and the isolated switch of C to the switch difference of moving while just controlling the ice-melt gating.
The utility model is simple in structure, utilizes distribution transformer every the characteristic that exchanges perfectly straight stream, makes and do not need to remove distribution transformer when circuit is exchanged to ice-melt, has reduced the huge workload that needs to remove distribution transformer in the DC ice melting; By regulating the size of single-phase silicon-controlled valve Trigger Angle, realized the adjustable continuously of ice melting current, and the power supply 10kV bus of ice-melt also obtains than being easier to.
Claims (2)
1. distribution line AC ice melting device, this deicing device input connects the ice-melt power supply through circuit breaker, output connects by DC ice-melting, it is characterized in that described deicing device is comprised of bypass to single-phase isolating switch with single-phase isolating switch and three one group of single-phase silicon-controlled valve, AC reactor,, the input of described circuit breaker is connected with the ice-melt power supply, the output of circuit breaker connects respectively the input of the single-phase isolating switch on three-phase line, the output of single-phase isolating switch with by DC ice-melting, be connected; Described single-phase silicon-controlled valve and AC reactor are serially connected between the input of the output of circuit breaker of arbitrary phase and single-phase isolating switch, at the AC reactor two ends, are arranged in parallel the bypass single-phase isolating switch.
2. distribution line AC ice melting device according to claim 1, is characterized in that described three are respectively the isolated switch of A, the isolated switch of B and the isolated switch of C to single-phase isolating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619385 CN202957555U (en) | 2012-11-21 | 2012-11-21 | Alternating current ice melting device of power distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619385 CN202957555U (en) | 2012-11-21 | 2012-11-21 | Alternating current ice melting device of power distribution line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957555U true CN202957555U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220619385 Expired - Lifetime CN202957555U (en) | 2012-11-21 | 2012-11-21 | Alternating current ice melting device of power distribution line |
Country Status (1)
| Country | Link |
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| CN (1) | CN202957555U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931621A (en) * | 2012-11-21 | 2013-02-13 | 梁一桥 | Alternating-current ice melting device for distribution line |
| CN114709780A (en) * | 2021-12-21 | 2022-07-05 | 贵州电网有限责任公司 | Power regulation-based online ice melting device for power transmission and distribution line and control method |
-
2012
- 2012-11-21 CN CN 201220619385 patent/CN202957555U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931621A (en) * | 2012-11-21 | 2013-02-13 | 梁一桥 | Alternating-current ice melting device for distribution line |
| CN102931621B (en) * | 2012-11-21 | 2015-03-25 | 梁一桥 | Alternating-current ice melting device for distribution line |
| CN114709780A (en) * | 2021-12-21 | 2022-07-05 | 贵州电网有限责任公司 | Power regulation-based online ice melting device for power transmission and distribution line and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Qiguo Inventor after: Liang Yiqiao Inventor after: Wan Zhufeng Inventor after: Wang Shaowei Inventor before: Liang Yiqiao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIANG YIQIAO TO: HAN QIGUO LIANG YIQIAO WAN ZHUFENG WANG SHAOWEI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170831 Address after: 311121, No. 2, building 20, Haishu Road, front street, Yuhang District, Hangzhou, Zhejiang Patentee after: ZHEJIANG GUIRONG XIEPING TECHNOLOGY Co.,Ltd. Address before: 310030, Zhenhua Road, three pier West Lake Science Park, Hangzhou, Zhejiang, Xihu District 210, China Patentee before: Liang Yiqiao |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220513 Address after: 510540 room 1608, 16th floor, Baiyun electric science and technology building, No. 9, Keyuan Road, Guangzhou private science and Technology Park, No. 1633, Beitai Road, Baiyun District, Guangzhou, Guangdong Patentee after: Guangzhou Mingde Power Technology Co.,Ltd. Address before: 311121 first floor, building 2, No. 20, Haishu Road, Cangqian street, Yuhang District, Hangzhou, Zhejiang Province Patentee before: ZHEJIANG GUIRONG XIEPING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
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| CX01 | Expiry of patent term |