CN212114724U - 10kV fixed AC ice melting device - Google Patents
10kV fixed AC ice melting device Download PDFInfo
- Publication number
- CN212114724U CN212114724U CN202021167796.7U CN202021167796U CN212114724U CN 212114724 U CN212114724 U CN 212114724U CN 202021167796 U CN202021167796 U CN 202021167796U CN 212114724 U CN212114724 U CN 212114724U
- Authority
- CN
- China
- Prior art keywords
- phase
- ice melting
- transformer
- circuit breaker
- vacuum circuit
- Prior art date
- 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.)
- Active
Links
- 238000002844 melting Methods 0.000 title claims abstract description 80
- 230000008018 melting Effects 0.000 title claims abstract description 80
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000032683 aging Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a 10kV fixed AC ice melting device, which comprises a switch cabinet, an ice melting transformer, a three-phase isolation switch and a three-phase short-circuit switch, wherein a vacuum circuit breaker, a first current transformer and a protection device are arranged in the switch cabinet, the input end of the vacuum circuit breaker is connected with a 10KV bus, the output end of the vacuum circuit breaker is connected with a three-phase ice melting circuit, and the ice melting transformer is connected with the three-phase ice melting circuit at the output end of the vacuum circuit breaker; the output end of the ice melting transformer is connected to the three-phase power transmission line through a three-phase isolation disconnecting link, and the three-phase short-circuit disconnecting link is arranged on the three-phase power transmission line behind the three-phase isolation disconnecting link; the two ends of the primary side of the first current transformer are respectively connected with the output end of the vacuum circuit breaker, the input end of the ice melting transformer and the protection device connected with the secondary side. The utility model discloses can effectively solve because 10kV and following distribution network overhead line footpath type is various, and current portable direct current ice-melt device has output current too big, destroys the circuit easily and insulates for the ageing problem of circuit.
Description
Technical Field
The utility model relates to a fixed interchange ice-melt device of 10 kV.
Background
Currently, the possible solutions for eliminating line icing are roughly divided into three types: natural deicing, thermal deicing and mechanical deicing, wherein the thermal deicing efficiency is highest, at present, the most widely developed and applied at home and abroad are mobile direct-current deicing devices which can melt ice on lines of 110kV or more, and because of vehicle-mounted deicing devices, the cost performance is theoretically highest, but the mobile direct-current deicing devices have large investment and are inconvenient to use in mountainous areas. The distribution network overhead line wire diameter types of 10kV and below are various, and the movable direct-current ice melting device has the defects of overlarge output current, easy damage to line insulation, accelerated line aging and the like. Therefore, it is necessary to develop a low-cost ice melting device with a small and controllable output current, which is convenient for solving the problem of ice coating on the 10kV line in the mountainous area.
The following disadvantages are present:
1. the existing mobile direct-current ice melting device has large investment; 2. the output current of the mobile direct-current ice melting device is too large, the mobile direct-current ice melting device can only be suitable for lines of 110kV and above, and for lines of 10kV and below, line aging and insulation reduction are easily caused; 3. most 10kV lines in mountainous areas pass through Chong mountains and mountains, roads are blocked in winter, and the mobile direct-current ice melting device is difficult to reach a designated position.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fixed interchange ice-melt device of 10kV can effectively solve because distribution network overhead line footpath type below 10kV is various, and current portable direct current ice-melt device has output current too big, destroys the circuit easily and insulates for the ageing problem of circuit.
The utility model provides a because distribution network overhead line footpath type below 10kV is various, and current portable direct current ice-melt device has output current too big, destroys the circuit easily and insulates for the ageing problem of circuit.
The utility model provides a technical scheme that its technical problem adopted is: a10 kV fixed AC ice melting device comprises a switch cabinet, an ice melting transformer, a three-phase isolation disconnecting link and a three-phase short-circuit disconnecting link, wherein a vacuum circuit breaker, a first current transformer and a protection device are arranged in the switch cabinet, the input end of the vacuum circuit breaker is connected with a 10KV bus, the output end of the vacuum circuit breaker is connected with a three-phase ice melting line, and the ice melting transformer is connected with the three-phase ice melting line at the output end of the vacuum circuit breaker; the output end of the ice melting transformer is connected to the three-phase power transmission line through a three-phase isolation disconnecting link, and the three-phase short-circuit disconnecting link is arranged on the three-phase power transmission line behind the three-phase isolation disconnecting link; the two ends of the primary side of the first current transformer are respectively connected with the output end of the vacuum circuit breaker and the input end of the ice melting transformer, and the protection device is connected with the secondary side.
Further, the 10kV fixed alternating-current ice melting device also comprises a voltage transformer and a second current transformer which are arranged on the phase A of the three-phase ice melting line between the output end of the ice melting transformer and the three-phase isolation disconnecting link; the primary side of the voltage transformer is connected with the phase A of the three-phase transmission line, and the secondary side of the voltage transformer is connected with a voltmeter; the primary side of the second current transformer is connected with the phase A of the three-phase transmission line, and the secondary side of the second current transformer is connected with an ammeter.
In order to further improve the stability and the safety, the three-phase ice melting transformer comprises a zero sequence transformer and an arrester which are arranged on a three-phase ice melting line between the vacuum circuit breaker and the ice melting transformer, wherein the zero sequence transformer and the arrester are respectively arranged corresponding to three phases of a three-phase transmission line.
In order to meet the requirements of overhead lines with different wire diameters, the ice melting transformer is provided with five gears which are respectively 5.65KV, 4.5KV, 3.5KV, 2.5KV and 1.35 KV.
Furthermore, the vacuum circuit breaker is in a VDS-12/1250-25 model, the first current transformer is in a LZBJ 9-10C5 model, the protection device is in a PSL641U model, and the zero sequence transformer is in a LXK-phi 150100/5 model; the model of the switch cabinet is KYN 28-12.
Furthermore, in order to meet the requirements of overhead transmission lines with different wire diameters, the three-phase short circuit disconnecting links are provided with a plurality of groups, and the three-phase short circuit disconnecting links are respectively arranged on the overhead lines with different wire diameters in the corresponding three-phase transmission lines.
The utility model has the advantages that: the 10kV fixed alternating-current ice melting device is low in investment, is suitable for being installed in a 35kV transformer substation in a mountainous area, has a remarkable ice melting effect on a 10kV line, effectively reduces disasters such as line galloping, line breakage, tripping and collapse caused by ice coating on the line, and ensures normal power utilization of people in the mountainous area in winter. The problems that the existing movable direct-current ice melting device has overlarge output current, the insulation of a line is easily damaged and the line is aged due to the fact that the types of the diameters of distribution network overhead lines of 10kV or below are various can be effectively solved. Meanwhile, the following defects of the existing ice melting device are overcome: 1. the existing mobile direct-current ice melting device has large investment; 2. the output current of the mobile direct-current ice melting device is too large, the mobile direct-current ice melting device can only be suitable for lines of 110kV and above, and for lines of 10kV and below, line aging and insulation reduction are easily caused; 3. most 10kV lines in mountainous areas pass through Chong mountains and mountains, roads are blocked in winter, and the mobile direct-current ice melting device is difficult to reach a designated position.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a block diagram of the present invention.
Detailed Description
In the embodiment, as shown in fig. 1 and fig. 2, a 10kV fixed ac ice melting device includes a switch cabinet 1, an ice melting transformer 3, a three-phase isolation disconnecting link 4, and a three-phase shorting disconnecting link 5, wherein a vacuum circuit breaker 2, a first current transformer 6, and a protection device 7 are arranged in the switch cabinet 1, an input end of the vacuum circuit breaker 2 is connected with a 10kV bus 8, an output end of the vacuum circuit breaker 2 is connected with a three-phase ice melting line 9, and the ice melting transformer 3 is connected with the three-phase ice melting line 9 at the output end of the vacuum circuit breaker 2; the output end of the ice melting transformer 3 is connected to a three-phase power transmission line 10 through a three-phase isolation disconnecting link 4, and a three-phase short-circuit disconnecting link 5 is arranged on the three-phase power transmission line 10 behind the three-phase isolation disconnecting link 4; the two ends of the primary side of the first current transformer 6 are respectively connected with the output end of the vacuum circuit breaker 2, the input end of the ice melting transformer 3 and the protection device 7 on the side of the secondary side.
The 10kV fixed alternating-current ice melting device also comprises a voltage transformer 11 and a second current transformer 12 which are arranged on the phase A of the three-phase ice melting line 9 between the output end of the ice melting transformer 3 and the three-phase isolation disconnecting link 4; the primary side of a voltage transformer 11 is connected with the phase A of the three-phase transmission line 10, and the secondary side is connected with a voltmeter 13; the second current transformer 12 has a primary side connected to phase a of the three-phase power transmission line and a secondary side connected to an ammeter 14. The primary side of the second current transformer 12 is connected in series to the three-phase transmission line 10, and one side of the voltage transformer 11 is connected in parallel to the phase a of the three-phase transmission line 10. The second current transformer 12 and the voltage transformer 11 are arranged in the ice melting transformer 3.
The 10kV fixed alternating-current ice melting device further comprises a zero sequence transformer and an arrester which are arranged on a three-phase ice melting line 9 between the vacuum circuit breaker 2 and the ice melting transformer 3, and the zero sequence transformer and the arrester are respectively arranged corresponding to three phases of a three-phase power transmission line. The lightning arrester is grounded. The zero sequence transformer and the lightning arrester adopt the existing structures, and meanwhile, the assembly of the zero sequence transformer and the lightning arrester cannot have any doubt on the basis of disclosing the two devices.
The ice melting transformer 3 is provided with five gears which are respectively 5.65KV, 4.5KV, 3.5KV, 2.5KV and 1.35 KV.
The vacuum circuit breaker 2 is in a model of VDS-12/1250-25 of Shanghai Tianling switch plant Co., Ltd, the first current transformer 6 is in a model of LZBJ 9-10C5 of Jiangsu Kexing electric apparatus Co., Ltd, the protection device 7 is in a model of PSL641U, and the zero sequence transformer is in a model of LXK-phi 150100/5 of Jiangsu Kexing electric apparatus Co., Ltd; the model of the switch cabinet 1 is KYN28-12 of Shanghai Tianling switch factory Co.
The three-phase short circuit disconnecting links 5 are provided with a plurality of groups, and the three-phase short circuit disconnecting links 5 are respectively arranged on the overhead lines corresponding to different wire diameters in the three-phase power transmission line 10.
Description of the principle:
and when the ice melting device does not operate, disconnecting the 10kV three-phase isolation disconnecting link 4 between the ice melting transformer 3 and the three-phase power transmission line 10 to ensure the normal operation of the power transmission line. When the ice melting device operates, the 10kV three-phase isolation disconnecting link 4 between the ice melting transformer 3 and the three-phase transmission line 10 is closed, the corresponding three-phase short-circuit disconnecting link 5 is closed at the same time, and ice melting is carried out on the three-phase transmission line 10 before the corresponding three-phase short-circuit disconnecting link 5. By adjusting the gear of the ice melting transformer 3, the output voltage of the ice melting transformer 3 can be changed, different output currents can be obtained, the ice melting efficiency is improved, and ice melting can be carried out on overhead lines with different wire diameters.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (6)
1. A10 kV fixed AC ice melting device is characterized in that: the ice melting system comprises a switch cabinet, an ice melting transformer, a three-phase isolation disconnecting link and a three-phase short-circuit disconnecting link, wherein a vacuum circuit breaker, a first current transformer and a protection device are arranged in the switch cabinet, the input end of the vacuum circuit breaker is connected with a 10KV bus, the output end of the vacuum circuit breaker is connected with a three-phase ice melting line, and the ice melting transformer is connected on the three-phase ice melting line at the output end of the vacuum circuit breaker; the output end of the ice melting transformer is connected to the three-phase power transmission line through a three-phase isolation disconnecting link, and the three-phase short-circuit disconnecting link is arranged on the three-phase power transmission line behind the three-phase isolation disconnecting link; the two ends of the primary side of the first current transformer are respectively connected with the output end of the vacuum circuit breaker, the input end of the ice melting transformer and the protection device connected with the secondary side.
2. The 10kV fixed AC ice melting device according to claim 1, characterized in that: the voltage transformer and the second current transformer are arranged on the phase A of the three-phase ice melting line between the output end of the ice melting transformer and the three-phase isolation disconnecting link; the primary side of the voltage transformer is connected with the phase A of the three-phase transmission line, and the secondary side of the voltage transformer is connected with a voltmeter; the primary side of the second current transformer is connected with the phase A of the three-phase transmission line, and the secondary side of the second current transformer is connected with an ammeter.
3. The 10kV fixed AC ice melting device according to claim 1, characterized in that: the three-phase ice melting transformer is characterized by further comprising a zero sequence transformer and an arrester which are arranged on a three-phase ice melting line between the vacuum circuit breaker and the ice melting transformer, wherein the zero sequence transformer and the arrester are respectively arranged corresponding to three phases of a three-phase power transmission line.
4. The 10kV fixed AC ice melting device according to any one of claims 1 to 3, wherein: the ice melting transformer is provided with five gears which are respectively 5.65KV, 4.5KV, 3.5KV, 2.5KV and 1.35 KV.
5. The 10kV fixed AC ice melting device according to claim 4, characterized in that: the vacuum circuit breaker is in a VDS-12/1250-25 model, the first current transformer is in a LZBJ 9-10C5 model, the protection device is in a PSL641U model, and the zero sequence transformer is in a LXK-phi 150100/5 model; the model of the switch cabinet is KYN 28-12.
6. The 10kV fixed AC ice melting device according to claim 5, characterized in that: the three-phase short circuit disconnecting link is provided with a plurality of groups, and the three-phase short circuit disconnecting links are respectively arranged on the overhead lines corresponding to different wire diameters in the three-phase power transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167796.7U CN212114724U (en) | 2020-06-22 | 2020-06-22 | 10kV fixed AC ice melting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167796.7U CN212114724U (en) | 2020-06-22 | 2020-06-22 | 10kV fixed AC ice melting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212114724U true CN212114724U (en) | 2020-12-08 |
Family
ID=73614723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021167796.7U Active CN212114724U (en) | 2020-06-22 | 2020-06-22 | 10kV fixed AC ice melting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212114724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964772A (en) * | 2021-11-03 | 2022-01-21 | 国网湖南省电力有限公司 | Ice melting system and ice melting method for 10kV distribution network line tail end ice-coated section |
-
2020
- 2020-06-22 CN CN202021167796.7U patent/CN212114724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964772A (en) * | 2021-11-03 | 2022-01-21 | 国网湖南省电力有限公司 | Ice melting system and ice melting method for 10kV distribution network line tail end ice-coated section |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203071571U (en) | Intelligent monitoring device for distributed boundary switches | |
| CN102255274A (en) | Direct-current de-icing method of overhead ground wire and composite optical fibre ground wire | |
| CN201408939Y (en) | Electrified arc extinguishing tool for dismounting and jointing cable tail wires with 10 kV | |
| CN109347134B (en) | Bipolar flexible direct-current power grid polar line electric main wiring system and online maintenance method | |
| CN203367934U (en) | DC deicing system | |
| WO2013026253A1 (en) | Power transmission line de-icing system and method thereof implemented using back braking operation during the whole process | |
| CN212114724U (en) | 10kV fixed AC ice melting device | |
| CN104880620A (en) | Test platform of super-high voltage bundled sub-conductor ice-melting | |
| CN201829958U (en) | Capacitor bank for directly compensating 110kV bus | |
| CN105807193A (en) | Same-frequency same-phase voltage withstanding test device with safety sampling signals | |
| RU75513U1 (en) | ELECTRIC POWER METERING POST | |
| CN101859986A (en) | Transformer substation main connection system based on single bus bar partition | |
| CN201623495U (en) | Reactive power compensation complete equipment of SVC transformer substation | |
| CN201263078Y (en) | Integrated equipment of user demarcation circuit breaker | |
| CN218897086U (en) | 330KV long-distance line-changing quick power-transferring electric main wiring structure | |
| CN205029185U (en) | Movable substation's electrical connection structure | |
| RU215931U1 (en) | MOBILE TRANSFORMER SUBSTATION | |
| CN108281917B (en) | Extra-high voltage alternating current transformer substation and design method thereof | |
| CN218828751U (en) | Gas insulation box type partitioning device | |
| CA3122917A1 (en) | Electric vehicle charging station for connecting to high or extra high voltage transmission line and operation method thereof | |
| WO2019123424A1 (en) | Electric vehicle charging station for connecting to high or extra high voltage transmission line and operation method thereof | |
| CN216958870U (en) | GIS transformer substation and outlet structure thereof | |
| CN216390533U (en) | 66kV current collection system of photovoltaic power plant | |
| CN204694796U (en) | Surge arrester failure indicating device | |
| CN217087302U (en) | Outgoing line arrangement structure for switching outgoing line intervals in substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |