CN203367934U - DC deicing system - Google Patents
DC deicing system Download PDFInfo
- Publication number
- CN203367934U CN203367934U CN 201320463242 CN201320463242U CN203367934U CN 203367934 U CN203367934 U CN 203367934U CN 201320463242 CN201320463242 CN 201320463242 CN 201320463242 U CN201320463242 U CN 201320463242U CN 203367934 U CN203367934 U CN 203367934U
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- China
- Prior art keywords
- direct current
- output device
- transmission line
- ice melting
- phase line
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a DC deicing system which comprises a DC power output device used for outputting direct current. An output end of the DC power output device is connected with a three-phase line on a transmission line of a substation through a switch unit and a transmission conductor. Under the action of the switch unit, the transmission conductor is short-circuited to the phase line of the transmission line. According to the DC deicing system, the three-phase line of the transmission line of the substation is connected to the output end of the DC power output device by the utilization of the transmission conductor, and through the switch unit for controlling on-off of the transmission conductor, arbitrary phase line of the three-phase line is short-circuited between negative and positive terminals of the DC power output device so as to realize DC deicing. According to the DC deicing system, DC deicing of the three-phase line of the transmission line is realized by the utilization of the external DC power output device. The DC deicing system provided by the utility model has fast deicing response speed, is convenient to implement and requires low deicing cost.
Description
Technical field
The utility model relates to the power supply field of power transmission, especially, relates to a kind of for transmission line being carried out to the direct current ice melting system of DC ice melting.
Background technology
Along with the continuous deterioration of global climate, the harm that ice damage causes transmission line is serious all the more.The ice damage at 2008 beginning of the years, caused huge loss to China's electrical network.The icing overload causes transmission line tripping operation and device damage, naturally deicing the wire jump caused and waving also of dependence weather will cause transmission line and device damage, traditional dependence deicing manually, inefficiency not only, operating environment is severe, seriously jeopardize power worker's life security, and the ice-melt of hysteresis also can cause huge damage to grid equipment.
Compared to adopting mechanical breaking, vibrations; Adopting all external force methods such as external heat source heating, melting, utilize transmission pressure self to implement ice-melt by the thermal effect of electric current, is obviously to plant the most rapidly, be convenient to most implement and save most cost.Therefore need a kind of direct current ice melting system for the transmission line ice-melt of exploitation badly.
The utility model content
The utility model purpose is to provide a kind of direct current ice melting system, to solve the technical problem that ice-melt not in time after existing powerline ice-covering, the ice-melt cost is high.
For achieving the above object, the technical solution adopted in the utility model is as follows
A kind of direct current ice melting system, comprise for exporting galvanic DC power supply output device;
The output of DC power supply output device is connected with the three-phase line on the transformer station transmission line through switch element and transmission conductor, and the phase line of transmission conductor short circuit transmission line under the effect of switch element is to realize DC ice melting.
Further, switch element is connection in series-parallel disconnecting link group, and transmission conductor comprises three DC tube buses on the three-phase line that is connected to respectively transmission line.
Further, connection in series-parallel disconnecting link group comprises three groups of conducting branch roads that are connected in parallel between DC power supply output device both positive and negative polarity lead-out terminal, every group of conducting branch road includes two direct current disconnecting links that are connected in series between DC power supply output device both positive and negative polarity lead-out terminal, between two direct current disconnecting links of every group of conducting branch road, through the DC tube bus, is connected to respectively on the three-phase line of transmission line.
Further, the DC tube bus is semi-insulating aluminum tube bus.
Further, between adjacent two DC tube buses, spacing is 1.3-1.5 rice.
Further, transmission line is the 500kV transmission line.
Further, the outer surface of DC tube bus has additional the epoxy resins insulation pipe.
The utlity model has following beneficial effect:
The utility model direct current ice melting system, by utilizing transmission conductor the three-phase line of transformer station's transmission line to be connected to the output of DC power supply output device, and realize that by the switch element of controlling the transmission conductor break-make any phase phase line of three-phase line is shorted between the anode and cathode terminals of DC power supply output device, realizes DC ice melting.The utility model direct current ice melting system, utilize extraneous DC power supply output device to carry out DC ice melting to the three-phase line of transmission line, ice-melt fast response time and be convenient to implement, and the ice-melt cost is low.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.With reference to figure, the utility model is described in further detail down.
The accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model preferred embodiment direct current ice melting system.
Description of reference numerals
10, DC power supply output device; 20, connection in series-parallel disconnecting link group; 30, transmission line; 40, DC tube bus.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of direct current ice melting system, comprises for exporting galvanic DC power supply output device 10; The three-phase line of the output of DC power supply output device 10 on the transmission line 30 of switch element and transmission conductor and transformer station is connected, and the phase line of transmission conductor short circuit transmission line 30 under the effect of switch element is to realize DC ice melting.In the present embodiment, DC power supply output device 10 adopts the connection in series-parallel of controllable silicon and rectifier bridge to realize, the alternating current of the 10-35kV of input is converted to several kV with interior direct current output, with the three-phase line on the transmission line 30 to transformer station, carries out DC ice melting.The utility model embodiment is by utilizing transmission conductor the three-phase line of transformer station's transmission line 30 to be connected to the output of DC power supply output device 10, and realize that by the switch element of controlling the transmission conductor break-make any phase phase line of three-phase line is shorted between the anode and cathode terminals of DC power supply output device 10, realizes DC ice melting.The utility model direct current ice melting system, utilize the three-phase line of extraneous 10 pairs of transmission lines 30 of DC power supply output device to carry out DC ice melting, ice-melt fast response time and be convenient to implement, and the ice-melt cost is low.
With reference to Fig. 1, in the present embodiment, switch element is connection in series-parallel disconnecting link group 20, and transmission conductor comprises three DC tube buses 40 on the three-phase line that is connected to respectively transmission line 30.Wherein, between the connection in series-parallel cutter, group 20 comprises three groups of conducting branch roads that are connected in parallel between DC power supply output device 10 both positive and negative polarity lead-out terminals, every group of conducting branch road includes two direct current disconnecting links that are connected in series between DC power supply output device 10 both positive and negative polarity lead-out terminals, through DC tube bus 40, is connected to respectively on the three-phase line of transmission line 30 between between two direct current cuttves of every group of conducting branch road.With reference to Fig. 1, connection in series-parallel disconnecting link group 20 comprises chopper switch G1～G6, the first conducting branch road between the both positive and negative polarity of chopper switch G1, G2 formation DC power supply output device 10; The second conducting branch road between cutter between the both positive and negative polarity of switch G3, G4 formation DC power supply output device 10; The 3rd conducting branch road between the both positive and negative polarity of chopper switch G5, G6 formation DC power supply output device 10, the tie point of chopper switch G1, G2 is connected on the A phase phase line of transmission line 30 through DC tube bus 40, the tie point of chopper switch G3, G4 is connected on the B phase phase line of transmission line 30 through DC tube bus 40, the tie point of chopper switch G5, G6 is connected to through DC tube bus 40 on the C phase phase line of transmission line 30, can realize the phase-splitting ice-melt of A, B, C phase phase line by controlling chopper switch G1～G6.For example, when chopper switch G1, G2 conducting, realize the single-phase ice-melt of A phase phase line; When chopper switch G1, G6 conducting, realize the DC ice melting of A phase, C phase phase line.In the present embodiment, transmission line 30 is the 500kV transmission line.
In order to save construction cost, and improve the electric cable explosion fault that many service cables are connected in parallel on the unbalanced initiation of shunting caused on uniline, in the present embodiment, DC tube bus 40 is semi-insulating aluminum tube bus.
For reaching, the limitation that meets the substation field installing space reduces the active force between adjacent two DC tube buses 40 as far as possible, between adjacent two DC tube buses 40, spacing is preferably 1.3-1.5 rice, in the present embodiment, the spacing a between adjacent two semi-insulating aluminum tube bus is 1.3 meters.
For anti-mechanical damage and the external insulation performance that strengthens DC tube bus 40, preferably, at the outer surface of DC tube bus 40, have additional the epoxy resins insulation pipe.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. a direct current ice melting system, is characterized in that, comprises for exporting galvanic DC power supply output device (10);
The three-phase line of the output of described DC power supply output device (10) on the transmission line (30) of switch element and transmission conductor and transformer station is connected, and the phase line of described transmission conductor described transmission line of short circuit (30) under the effect of described switch element is to realize DC ice melting.
2. direct current ice melting system according to claim 1, is characterized in that,
Described switch element is connection in series-parallel disconnecting link group (20), and described transmission conductor comprises three DC tube buses (40) on the three-phase line that is connected to respectively described transmission line (30).
3. direct current ice melting system according to claim 2, is characterized in that,
Described connection in series-parallel disconnecting link group (20) comprises three groups of conducting branch roads that are connected in parallel between described DC power supply output device (10) both positive and negative polarity lead-out terminal, every group of conducting branch road includes two direct current disconnecting links that are connected in series between DC power supply output device (10) both positive and negative polarity lead-out terminal, between two direct current disconnecting links of every group of conducting branch road, through described DC tube bus (40), is connected to respectively on the three-phase line of described transmission line (30).
4. direct current ice melting system according to claim 2, is characterized in that,
Described DC tube bus (40) is semi-insulating aluminum tube bus.
5. according to the described direct current ice melting system of any one in claim 2 to 4, it is characterized in that,
Between adjacent two described DC tube buses (40), spacing is 1.3-1.5 rice.
6. direct current ice melting system according to claim 1, is characterized in that,
Described transmission line (30) is the 500kV transmission line.
7. according to the described direct current ice melting system of any one in claim 2 to 4, it is characterized in that,
The outer surface of described DC tube bus (40) has additional the epoxy resins insulation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320463242 CN203367934U (en) | 2013-07-31 | 2013-07-31 | DC deicing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320463242 CN203367934U (en) | 2013-07-31 | 2013-07-31 | DC deicing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367934U true CN203367934U (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320463242 Expired - Fee Related CN203367934U (en) | 2013-07-31 | 2013-07-31 | DC deicing system |
Country Status (1)
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| CN (1) | CN203367934U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196262A (en) * | 2017-07-21 | 2017-09-22 | 国网湖南省电力公司 | Wind power plant intensive style DC de-icing device topological structure |
| CN107622816A (en) * | 2017-10-11 | 2018-01-23 | 江苏士林电气设备有限公司 | It is a kind of can ice-melt snow high direct voltage insulating tube type busbar |
| CN110829335A (en) * | 2019-11-18 | 2020-02-21 | 国网湖南省电力有限公司 | Prefabricated cabin type agricultural distribution network direct-current ice melting device and ice melting method thereof |
| CN111668791A (en) * | 2020-06-19 | 2020-09-15 | 南方电网数字电网研究院有限公司 | DC serial ice melting device and system |
| CN111746324A (en) * | 2019-03-29 | 2020-10-09 | 天津平高智能电气有限公司 | Energy storage charging pile |
| WO2021136286A1 (en) * | 2019-12-30 | 2021-07-08 | 西安热工研究院有限公司 | System and method for melting ice on overhead line by using photovoltaic power generation |
-
2013
- 2013-07-31 CN CN 201320463242 patent/CN203367934U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196262A (en) * | 2017-07-21 | 2017-09-22 | 国网湖南省电力公司 | Wind power plant intensive style DC de-icing device topological structure |
| CN107622816A (en) * | 2017-10-11 | 2018-01-23 | 江苏士林电气设备有限公司 | It is a kind of can ice-melt snow high direct voltage insulating tube type busbar |
| CN111746324A (en) * | 2019-03-29 | 2020-10-09 | 天津平高智能电气有限公司 | Energy storage charging pile |
| CN110829335A (en) * | 2019-11-18 | 2020-02-21 | 国网湖南省电力有限公司 | Prefabricated cabin type agricultural distribution network direct-current ice melting device and ice melting method thereof |
| WO2021136286A1 (en) * | 2019-12-30 | 2021-07-08 | 西安热工研究院有限公司 | System and method for melting ice on overhead line by using photovoltaic power generation |
| CN111668791A (en) * | 2020-06-19 | 2020-09-15 | 南方电网数字电网研究院有限公司 | DC serial ice melting device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |