CN202736812U - Disconnector specially for connection between DC ice melting device and converter station ice melting line - Google Patents
Disconnector specially for connection between DC ice melting device and converter station ice melting line Download PDFInfo
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- CN202736812U CN202736812U CN201220435345.6U CN201220435345U CN202736812U CN 202736812 U CN202736812 U CN 202736812U CN 201220435345 U CN201220435345 U CN 201220435345U CN 202736812 U CN202736812 U CN 202736812U
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Abstract
The utility model discloses a disconnector specially for connection between a DC ice melting device and a converter station ice melting line, and relates to the electrical network power transmission line DC ice melting technology. The technical man points are that the disconnecor comprises a grading ring, a moving contact, a static contact, a first insulating porcelain bottle, a second insulating porcelain bottle, a first operating porcelain bottle, a first binding post plate, a second binding post plate, a vertical open-type main knife switch and a main knife switch electrically-operated mechanism; the first insulating porcelain bottle is 4000-13000mm in height and the second insulating porcelain bottle is 400-2500mm in height, etc.
Description
Technical field
The utility model relates to grid power transmission circuit DC ice melting technology, and is particularly a kind of for DC de-icing device and current conversion station DC ice-melting isolating switch special for connection.
Background technology
Since the forties in 20th century, the threat of ice damage is the large technical barrier that the electric power system industrial quarters does one's utmost to tackle always.In recent years, along with the global climate condition changes, low temperature sleet and snow ice weather frequently occurs in south China, Central China, North China, repeatedly causes China each province transmission line large tracts of land, the long-time stoppage in transit, brings about great losses for national economy and people's lives.
In order to prevent the again appearance of this situation, China actively develops the transmission line de-icing technology, has researched and developed DC de-icing device, is widely used in the transmission line at present.
When using DC de-icing device to line ice-melting, deicing device output pipe bus need to be connected with DC ice-melting, its method of attachment mainly contains two kinds, and one is when ice-melt, utilizes prefabricated connecting line that deicing device output pipe bus is connected with DC ice-melting by the workman scene.Two is that the ice-melt isolating switch special for connection is installed below DC ice-melting, and disconnecting switch operation makes deicing device output pipe bus link to each other with DC ice-melting.
When the application first kind of way connects, because the overhead transmission line suspension height is generally larger, particularly for the 500kV circuit, the circuit suspension height is generally more than 20m, during the attended operation of workman's conducting transmission line, need to exist the line outage time long by a large amount of instruments, the low and defective that threatens wiring workman personal safety of reliability.Therefore, a large amount of second way that adopt connect at present.
Present ice-melt isolating switch special for connection is mainly used in AC Substation.When DC line or ground wire carry out ice-melt in to current conversion station, because the desired isolation switch insulation porcelain vase of current conversion station dry arcing distance (dry arcing distance refer to insulator normal with two metal-wares of working voltage between beeline between extraneous air) and creepage distance all with AC Substation a great difference is arranged, traditional isolating switch that is used for AC Substation is used for the change of current is stood erectly the Flow Line ground wire when carrying out ice-melt, may cause polar curve to discharge over the ground not because of creepage distance, have larger potential safety hazard.Therefore for satisfying the requirement of current conversion station DC line ground wire deicing, need new ice-melt isolating switch special to solve the problem that deicing device output pipe bus is connected with DC ice-melting.
The utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of new full automatic ice-melt isolating switch special, be applicable to current conversion station DC line ground wire deicing.
The technical solution adopted in the utility model is such: comprise grading ring, moving contact, fixed contact, porcelain insulator one, porcelain insulator two, operation porcelain vase one, terminal board one, terminal board two, vertical opening type operator lock, operator lock motor-operating mechanism; The top of described porcelain insulator one is fixedly connected with for conducting electricity with the bottom surface of grading ring; The end face of described porcelain insulator one is installed with terminal board one, and the bottom surface of grading ring also is installed with fixed contact, and between fixed contact, terminal board one and the grading ring for conducting electricity connection; Described porcelain insulator two tops are fixedly connected with described terminal board two, are fixedly connected with for conducting electricity between terminal board two and the described operator lock lower end, are fixedly connected with for conducting electricity between operator lock top and the described moving contact; Operate between lock motor-operating mechanism and the operator lock as being in transmission connection; Length after described operator lock stretches can satisfy moving contact and fixed contact good contact; The height of described porcelain insulator one is 4000 ~ 13000mm, and the height of porcelain insulator two is 400 ~ 2500mm.
Preferably, also comprise operation porcelain vase one, support column and brace table; One end of support column is fixed in ground, be installed with brace table on the other end, be installed with described porcelain insulator one, porcelain insulator two and operation porcelain vase one on the described brace table, it is other that operation porcelain vase one is positioned at porcelain insulator two, operation porcelain vase one and porcelain insulator two are contour and be parallel to each other, and operation porcelain vase top links to each other with porcelain insulator two top ends; Described operator lock motor-operating mechanism is fixedly installed on the brace table bottom surface; Be in transmission connection by operation porcelain vase one between operator lock motor-operating mechanism and the operator lock.
Preferably, porcelain insulator one adopts the D.C. isolation porcelain vase of porcelain insulating or compound inslation, and porcelain insulator one creepage distance should be more than or equal to the current conversion station direct-current polar insulator creepage distance at DC de-icing device place.
Preferably, when current conversion station DC line voltage was 400kV, described porcelain insulator one highly was 4000 ~ 8000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 16800～25200mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 12600～18900mm.
Preferably, when current conversion station DC line voltage was 500kV, described porcelain insulator one highly was 4500 ~ 8500mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 21000 ~ 31500mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 15750 ~ 23625mm.
Preferably, described porcelain insulator one highly is 7500mm, and the height of porcelain insulator two is 400mm.
Preferably, when current conversion station DC line voltage was 600kV, described porcelain insulator one highly was 4800 ~ 9000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 252000 ~ 37800mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 18900 ~ 28350mm.
Preferably, when current conversion station DC line voltage was 800kV, described porcelain insulator one highly was 9000 ~ 11000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 336000 ~ 50400mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
Preferably, described porcelain insulator one highly is 10000mm, and the height of porcelain insulator two is 560mm.
Preferably, when current conversion station DC line voltage was 1000kV, described porcelain insulator one highly was 11000 ~ 13000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 336000 ~ 50400mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1. the utility model can realize that deicing device efferent duct bus and DC ice-melting are from being dynamically connected, need not manual operation, the personal injury of having avoided manual operation to bring, greatly shorten the time of deicing device access, reduced the economic loss that causes line outage to bring because of the deicing device access.
2. artificial patch may so that ice-melt can't be carried out smoothly, adopt the utility model to realize automatically access because unreasonable operation causes connection reliability can not be guaranteed, and reliability improves.
3. this isolating switch adopts vertical unlocking structure, and Switch main body takes up an area minimum, when implementing improvement project in the transformer station that has built up, generally need not to carry out new expropriation of land, possesses preferably operational feasibility.
4. the utility model has satisfied the requirement of current conversion station DC line ground wire deicing, has avoided the inadequate potential safety hazard of creepage distance of using AC isolation switch to bring.
Description of drawings
Fig. 1 is the utility model structural representation (when isolating switch disconnects).
Fig. 2 is the right view (when isolating switch is closed) of Fig. 1, and dotted portion representative operator water seal is put down the position when folding among Fig. 2.
Mark among the figure: 1 grading ring, 2 terminal boards, one, 3 fixed contact, 4 vertical opening types operator lock, 5 terminal boards, two, 6 porcelain insulators, two, 7 motor-operating mechanisms, 8 porcelain insulators, one, 9 operation porcelain vase one.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model is the isolating switch of a kind of vertical telescopic, two insulation column (being porcelain insulator), is used for realizing that DC de-icing device efferent duct bus is connected with the current conversion station DC ice-melting.
As shown in Figure 1, the utility model comprises grading ring, moving contact, fixed contact, porcelain insulator one, porcelain insulator two, terminal board one, terminal board two, vertical opening type operator lock, operator lock motor-operating mechanism, support column and brace table.
In order to drive that the operator lock stretches or folding, also are provided with operation porcelain vase one in that porcelain insulator two is other, and porcelain insulator two and operation porcelain vase one contour, be parallel to each other and the upper end links to each other; One end of support column is fixed in ground, is installed with brace table on the other end, is installed with described porcelain insulator one, porcelain insulator two and operation porcelain vase one on the described brace table; The top of described porcelain insulator one is fixedly connected with the bottom surface of grading ring; The end face of described grading ring is installed with terminal board one, and the bottom surface of grading ring also is installed with fixed contact, and utilizes good conductor to connect between fixed contact, terminal board one and the grading ring.
Described porcelain insulator two tops are fixedly connected with described terminal board two, for being fixedly connected with and for good conduction is connected, vertical opening type is operated between lock top and the described moving contact also for very conducting electricity, being fixedly connected with between terminal board two and the described vertical opening type operator lock lower end.
The binding post board size designs according to the required maximum ice melting current of circuit.
Described operator lock motor-operating mechanism is fixedly installed on the brace table bottom surface, and operator lock motor-operating mechanism and vertical opening type operator lock are in transmission connection by operation porcelain vase one, for example: operator lock motor-operating mechanism comprises 380/220V motor and rotation connecting rod, the rotation connecting rod is fixedly connected with operation porcelain vase one lower end, and operation porcelain vase one upper end is connected with the operator lock by cam structure.The rotation of 380/220V driven by motor rotation connecting rod, the rotation connecting rod drives one rotation of operation porcelain vase again, and the operation porcelain vase drives cam structure again and again, and cam structure promotes the operator lock and moving contact rises, and contacts with fixed contact; Length after described vertical opening type operator lock stretches can satisfy moving contact and fixed contact good contact.
The operator lock that present embodiment adopts and its motor-operating mechanism are this area driving arrangement commonly used, and when the operator lock was folding, isolating switch was off-state, and when the operator lock stretched, isolating switch was closure state.Operator lock motor-operating mechanism uses 220V or 380V AC power to drive, by in control room operation-control switch or input operation instruction, realization operator lock motor-operating mechanism drives the motion of operator lock, thus the stretching, extension of realization operator lock or folding, and then the closed or disconnection of control isolating switch.
Support column in the present embodiment and brace table are not necessary, and porcelain insulator one, porcelain insulator two, operation porcelain vase and operator lock motor-operating mechanism can be directly installed on the ground.
In order to guarantee safety, prevent because of the gap from not, discharge causes short circuit between the dynamic and static contact, between moving contact and the ground and between fixed contact and the ground, the insulation level of this isolating switch need to satisfy certain requirement.
Wherein, the length of porcelain insulator one should design according to current conversion station DC ice-melting electric pressure (500kV, 800kV or 1000kV etc.) and overvoltage level, to guarantee that insulation level is identical with DC ice-melting insulation against ground level over the ground to porcelain insulator one.The height of porcelain insulator two should satisfy its insulation against ground level identical with DC de-icing device efferent duct bus insulation against ground level (less than 35kV), need to export ice-melt pipe busbar voltage grade according to DC de-icing device, overvoltage level designs.
When described vertical opening type operator lock does not stretch between moving contact and the fixed contact insulation level and air clearance should be by current conversion station in the insulation coordination result obtain, representative value is as for ± 500kV current conversion station, lightning overvoltage 1550kV and switching overvoltage 1175kV.That is the beeline between the top of porcelain insulator one and the porcelain insulator two top current-carrying parts, it is identical with the desired power switchgear fracture of current conversion station DC ice-melting electric pressure insulation level to satisfy between moving contact and the fixed contact insulation level.
In order to satisfy the requirement of current conversion station, the altitude range of described porcelain insulator one is 4000 ~ 13000mm, and the altitude range of porcelain insulator two is 400 ~ 2500mm.
Preferably, porcelain insulator one can adopt the D.C. isolation porcelain vase of porcelain insulating or compound inslation, and porcelain insulator one creepage distance should be more than or equal to the current conversion station direct-current polar insulator creepage distance at DC de-icing device place.
Need to prove that the porcelain insulator creepage distance is defined as between two current-carrying parts the beeline along the insulating material surface, the short line from the porcelain insulator bottom to its top namely, the height of porcelain insulator refers to from its bottom to the short essay on top.
Illustrate, when current conversion station DC line voltage was 400kV, described porcelain insulator one highly was 4000 ~ 8000mm, and the height of porcelain insulator two is 400 ~ 2500mm; When described porcelain insulator one was porcelain insulating D.C. isolation porcelain vase, the creepage distance value of described porcelain insulating D.C. isolation porcelain vase was 16800～25200mm; When described porcelain insulator one was compound inslation D.C. isolation porcelain vase, the creepage distance value of described compound inslation D.C. isolation porcelain vase was 12600～18900mm.
When current conversion station DC line voltage was 500kV, described porcelain insulator one highly was 4500 ~ 8500mm, and optimum height is 7500mm, and the height of porcelain insulator two is 400 ~ 2500mm, and optimum height is 400mm.
When described porcelain insulator one was porcelain insulating D.C. isolation porcelain vase, the creepage distance value of described porcelain insulating D.C. isolation porcelain vase was 21000 ~ 31500mm; When described porcelain insulator one was compound inslation D.C. isolation porcelain vase, the creepage distance value of described compound inslation D.C. isolation porcelain vase was 15750 ~ 23625mm.
When current conversion station DC line voltage was 600kV, described porcelain insulator one highly was 4800 ~ 9000mm, and the height of porcelain insulator two is 400 ~ 2500mm.
At this moment, when described porcelain insulator one was porcelain insulating D.C. isolation porcelain vase, the creepage distance value of described porcelain insulating D.C. isolation porcelain vase was 252000 ~ 37800mm; When described porcelain insulator one is compound inslation D.C. isolation porcelain vase, the creepage distance value of described compound inslation D.C. isolation porcelain vase is 18900 ~ 28350mm.
When current conversion station DC line voltage was 800kV, described porcelain insulator one highly was 9000 ~ 11000mm, and optimum height is 10000mm; The height of porcelain insulator two is 400 ~ 2500mm, and optimum height is 560mm.
At this moment, when described porcelain insulator one was porcelain insulating D.C. isolation porcelain vase, the creepage distance value of described porcelain insulating D.C. isolation porcelain vase was 336000 ~ 50400mm; When described porcelain insulator one is compound inslation D.C. isolation porcelain vase, the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
When current conversion station DC line voltage was 1000kV, described porcelain insulator one highly was 11000 ~ 13000, and optimum height is 12500mm, and the height of porcelain insulator two is 400 ~ 2500mm, and optimum height is 600mm.When described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 336000 ~ 50400mm; When described porcelain insulator one is compound inslation D.C. isolation porcelain vase, the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
And the porcelain insulator that adopts in the utility model all is according to DC ice-melting overpressure level and the design of installation environment gradation for surface pollution.
During use, terminal board one in the utility model is connected with DC ice-melting by gold utensil, terminal board two is connected with DC de-icing device efferent duct bus, when operator lock motor-operating mechanism drives the vertical stretching of operator lock, the contact of sound contact, isolating switch is closed, thereby has realized that DC ice-melting is connected with DC de-icing device efferent duct bus; When flat the folding of operator lock motor-operating mechanism driving operator water seal, the sound contact separation, isolating switch disconnects, thereby has realized DC ice-melting and the disconnection of DC de-icing device efferent duct bus.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. DC de-icing device and current conversion station DC ice-melting isolating switch special for connection comprise grading ring, moving contact, fixed contact, porcelain insulator one, porcelain insulator two, operation porcelain vase one, terminal board one, terminal board two, vertical opening type operator lock, operator lock motor-operating mechanism;
The top of described porcelain insulator one is fixedly connected with for conducting electricity with the bottom surface of grading ring; The end face of described porcelain insulator one is installed with terminal board one, and the bottom surface of grading ring also is installed with fixed contact, and between fixed contact, terminal board one and the grading ring for conducting electricity connection;
Described porcelain insulator two tops are fixedly connected with described terminal board two, are fixedly connected with for conducting electricity between terminal board two and the described operator lock lower end, are fixedly connected with for conducting electricity between operator lock top and the described moving contact;
Operate between lock motor-operating mechanism and the operator lock as being in transmission connection; Length after described operator lock stretches can satisfy moving contact and fixed contact good contact;
It is characterized in that the height of described porcelain insulator one is 4000 ~ 13000mm, the height of porcelain insulator two is 400 ~ 2500mm.
2. DC de-icing device according to claim 1 and current conversion station DC ice-melting isolating switch special for connection is characterized in that, also comprise operation porcelain vase one, support column and brace table; One end of support column is fixed in ground, be installed with brace table on the other end, be installed with described porcelain insulator one, porcelain insulator two and operation porcelain vase one on the described brace table, it is other that operation porcelain vase one is positioned at porcelain insulator two, operation porcelain vase one and porcelain insulator two are contour and be parallel to each other, and operation porcelain vase top links to each other with porcelain insulator two top ends;
Described operator lock motor-operating mechanism is fixedly installed on the brace table bottom surface;
Be in transmission connection by operation porcelain vase one between operator lock motor-operating mechanism and the operator lock.
3. DC de-icing device according to claim 1 and 2 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, porcelain insulator one adopts the D.C. isolation porcelain vase of porcelain insulating or compound inslation, and porcelain insulator one creepage distance should be more than or equal to direct-current polar insulator creepage distance in the described current conversion station.
4. DC de-icing device according to claim 3 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, when current conversion station DC line voltage was 400kV, described porcelain insulator one highly was 4000 ~ 8000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 16800～25200mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 12600～18900mm.
5. DC de-icing device according to claim 3 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, when current conversion station DC line voltage was 500kV, described porcelain insulator one highly was 4500 ~ 8500mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 21000 ~ 31500mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 15750 ~ 23625mm.
6. DC de-icing device according to claim 5 and current conversion station DC ice-melting isolating switch special for connection is characterized in that, described porcelain insulator one highly is 7500mm, and the height of porcelain insulator two is 400mm.
7. DC de-icing device according to claim 3 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, when current conversion station DC line voltage was 600kV, described porcelain insulator one highly was 4800 ~ 9000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 252000 ~ 37800mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 18900 ~ 28350mm.
8. DC de-icing device according to claim 3 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, when current conversion station DC line voltage was 800kV, described porcelain insulator one highly was 9000 ~ 11000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 336000 ~ 50400mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
9. DC de-icing device according to claim 8 and current conversion station DC ice-melting isolating switch special for connection is characterized in that, described porcelain insulator one highly is 10000mm, and the height of porcelain insulator two is 560mm.
10. DC de-icing device according to claim 3 and current conversion station DC ice-melting isolating switch special for connection, it is characterized in that, when current conversion station DC line voltage was 1000kV, described porcelain insulator one highly was 11000 ~ 13000mm, and the height of porcelain insulator two is 400 ~ 2500mm; Described porcelain insulator one is porcelain insulating D.C. isolation porcelain vase, and the creepage distance value of described porcelain insulating D.C. isolation porcelain vase is 336000 ~ 50400mm; Perhaps described porcelain insulator one is compound inslation D.C. isolation porcelain vase, and the creepage distance value of described compound inslation D.C. isolation porcelain vase is 25200 ~ 37800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435345.6U CN202736812U (en) | 2012-08-30 | 2012-08-30 | Disconnector specially for connection between DC ice melting device and converter station ice melting line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435345.6U CN202736812U (en) | 2012-08-30 | 2012-08-30 | Disconnector specially for connection between DC ice melting device and converter station ice melting line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736812U true CN202736812U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220435345.6U Expired - Lifetime CN202736812U (en) | 2012-08-30 | 2012-08-30 | Disconnector specially for connection between DC ice melting device and converter station ice melting line |
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| CN (1) | CN202736812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271681A (en) * | 2020-10-27 | 2021-01-26 | 中国电力工程顾问集团中南电力设计院有限公司 | Leading structure of direct-current ground wire ice melting power supply of extra-high voltage multi-terminal direct-current converter station |
-
2012
- 2012-08-30 CN CN201220435345.6U patent/CN202736812U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271681A (en) * | 2020-10-27 | 2021-01-26 | 中国电力工程顾问集团中南电力设计院有限公司 | Leading structure of direct-current ground wire ice melting power supply of extra-high voltage multi-terminal direct-current converter station |
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| C14 | Grant of patent or utility model | ||
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Owner name: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST Free format text: FORMER NAME: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee after: Southwest Electric Power Design Institute CO., Ltd. of China Power Engineering Consulting Group Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. |
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Granted publication date: 20130213 |
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