CN104577926B - The test platform of wire ground wire combination DC ice melting can be realized - Google Patents
The test platform of wire ground wire combination DC ice melting can be realized Download PDFInfo
- Publication number
- CN104577926B CN104577926B CN201510010131.2A CN201510010131A CN104577926B CN 104577926 B CN104577926 B CN 104577926B CN 201510010131 A CN201510010131 A CN 201510010131A CN 104577926 B CN104577926 B CN 104577926B
- Authority
- CN
- China
- Prior art keywords
- ice
- disconnecting link
- melt
- direct current
- phase conductor
- 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 19
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 230000008018 melting Effects 0.000 title claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 91
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of test platform realizing wire ground wire combination DC ice melting, including DC output power, direct current output-parallel the first disconnecting link, direct current output-parallel the second disconnecting link, direct current output cathode bus, direct current output negative pole bus, A phase conductor the first ice-melt disconnecting link, A phase conductor the second ice-melt disconnecting link, B phase conductor the first ice-melt disconnecting link, B phase conductor the second ice-melt disconnecting link, C phase conductor the first ice-melt disconnecting link, C phase conductor the second ice-melt disconnecting link, first Ground wire with insulation ocver ice-melt disconnecting link and the second Ground wire with insulation ocver ice-melt disconnecting link, the present invention can be adjusted flexibly the mode of connection, wire or the multiple ice-melt demand of ground wire when meeting circuit actual ice-melt, there is provided for transmission line de-icing research and support.
Description
Technical field
The invention belongs to electrical engineering technical field, particularly relate to a kind of examination realizing wire ground wire combination DC ice melting
Testing platform, this platform is applicable to the wire of transmission line of electricity and the ice-melt test of ground wire.
Background technology
South China part province ice disaster takes place frequently, and carrys out serious threat to grid power transmission circuit seat belt.To icing
It is that electrical network tackles one of the most direct, most effective, the safest, most economical important means of ice damage that circuit implements electric current ice-melt.Use
DC ice melting is not required to be the reactive component of circuit and provides reactive current, is greatly improved ice-melt efficiency and economy, thus direct current
Ice-melt is widely applied in transmission line of electricity anti-ice.
At present for wire and the ground wire of transmission line of electricity, there is corresponding DC ice melting mode.But due to wire and ground wire
Line footpath, material, resistance, the parameter such as through-current capability different so that corresponding deicing device also has the most different spies
Point, for the transmission line of electricity of same length, electric current is big, voltage is low for the output of wire deicing device, ground wire deicing device output electric current
Little, voltage is high.Existing DC de-icing device, or carry out ice-melt for wire or for ground wire, and can not be simultaneously
It is applicable to the ice-melt of wire and ground wire.
Summary of the invention
The technical problem to be solved in the present invention is, the problem existed for existing DC de-icing device, and proposing one can be real
The test platform of existing wire ground wire combination DC ice melting, uses this test platform, can need flexibly according to the actual ice-melt of circuit
Adjust the mode of connection, both can realize wire ice-melt, ground wire deicing can be realized again, for transmission line wire ground wire deicing law study
There is provided and support.
In order to realize above-mentioned technical purpose, the technical scheme is that, one can realize wire ground wire combination direct current and melt
The test platform of ice, including DC output power, direct current output-parallel the first disconnecting link, direct current output-parallel the second disconnecting link, direct current
Output cathode bus, direct current output negative pole bus, A phase conductor the first ice-melt disconnecting link, A phase conductor the second ice-melt disconnecting link, B phase conductor
First ice-melt disconnecting link, B phase conductor the second ice-melt disconnecting link, C phase conductor the first ice-melt disconnecting link, C phase conductor the second ice-melt disconnecting link, first
Ground wire with insulation ocver ice-melt disconnecting link and the second Ground wire with insulation ocver ice-melt disconnecting link, described DC output power includes the first DC output power
With the second DC output power, the positive pole of the direct current output of the first described DC output power and the second DC output power leads to
Cross that direct current output-parallel the first disconnecting link is connected in parallel, negative pole is connected in parallel by direct current output-parallel the second disconnecting link；Through parallel connection
Positive pole and the negative pole of the direct current output after combination are respectively connected to direct current output cathode bus and direct current output negative pole bus；Direct current is defeated
Go out positive electrode bus by A phase conductor the first ice-melt disconnecting link, B phase conductor the first ice-melt disconnecting link, C phase conductor the first ice-melt disconnecting link and the
One Ground wire with insulation ocver ice-melt disconnecting link is connected with A phase conductor, B phase conductor, C phase conductor and the first Ground wire with insulation ocver respectively；Direct current output is negative
Pole bus is exhausted by A phase conductor the second ice-melt disconnecting link, B phase conductor the second ice-melt disconnecting link, C phase conductor the second ice-melt disconnecting link and second
Edge ground wire deicing disconnecting link is connected with A phase conductor, B phase conductor, C phase conductor and the second Ground wire with insulation ocver respectively.
Described a kind of test platform realizing wire ground wire combination DC ice melting, also includes direct current output series connection cutter
Lock, the positive pole of the negative pole of the direct current output of the first described DC output power and the direct current output of the second DC output power leads to
Cross direct current output series connection disconnecting link to be connected in series.
Described a kind of test platform realizing wire ground wire combination DC ice melting, described DC output power includes
Three-phase regulator, 12 pulsating wave rectifier transformer, the one or six Pulses Rectifier and the two or six Pulses Rectifier, described three-phase is adjusted
The external three phase mains of depressor input, the three-phase input of output termination 12 pulsating wave rectifier transformer；Described 12 pulsating wave is whole
Two three-phase outputs of convertor transformer connect the three-phase input of the one or six Pulses Rectifier and the two or six Pulses Rectifier respectively.
By a kind of test platform realizing wire ground wire combination DC ice melting of the present invention constituted above, three phase mains
After three-phase regulator pressure regulation, input to 12 pulsating wave rectifier transformer, 12 pulsating wave rectifier transformer two phase contrasts of output
It is the three-phase voltage of 30 °, respectively through the one or six Pulses Rectifier and the second six kinds of pulses ripple rectifier rectification, produces two unidirectional currents
Pressure.If closing, direct current output series connection disconnecting link, disconnects direct current output-parallel the first disconnecting link and direct current output-parallel the second disconnecting link, can be real
The series connection output of existing two DC voltages；Direct current output-parallel the first disconnecting link and direct current output-parallel the second disconnecting link if closing, disconnected
Open direct current output series connection disconnecting link, the Parallel opertation of two DC voltages can be realized.Direct current output cathode bus and direct current output are negative
Be connected to multiple ice-melt disconnecting link on the bus of pole respectively, by the combination of ice-melt disconnecting link, following multiple ice-melting mode can be realized: (1) if
Biphase wired in series ice-melt need to be carried out, the respective first ice-melt disconnecting link of two phase conductors that can close respectively and the second ice-melt disconnecting link, example
During as melted A phase conductor series connection B phase conductor, can close A phase conductor the first ice-melt disconnecting link and B phase conductor the second ice-melt disconnecting link, and breaks
Open other ice-melt disconnecting link；(2) if another phase conductor ice-melt need to be connected after carrying out biphase conductor in parallel, the of two phase conductors that can close
One ice-melt disconnecting link, then the second ice-melt disconnecting link of another phase conductor that closes, such as C phase of connecting after melting A phase conductor parallel connection B phase conductor is led
During line, A phase conductor the first ice-melt disconnecting link that can close, B phase conductor the first ice-melt disconnecting link and C phase conductor the second ice-melt disconnecting link, and break
Open other ice-melt disconnecting link；(3) if the series connection ice-melts of two ground wires need to be carried out, can close two respective first ice-melt disconnecting links of ground wire and
Second ice-melt disconnecting link, i.e. close the first Ground wire with insulation ocver ice-melt disconnecting link and the second Ground wire with insulation ocver ice-melt disconnecting link, and disconnects other ice-melt
Disconnecting link；(4) if need to carrying out a ground wire and connecting a phase conductor ice-melt, can close ground wire and the respective first ice-melt cutter of wire respectively
Lock and the second ice-melt disconnecting link, such as melt first Ground wire with insulation ocver series connection A phase conductor time, can close the first Ground wire with insulation ocver ice-melt disconnecting link and
A phase conductor the second ice-melt disconnecting link, and disconnect other ice-melt disconnecting link.Therefore, the test platform of the present invention, can be adjusted flexibly and connect
Line mode, wire or the multiple ice-melt demand of ground wire when meeting circuit actual ice-melt, provide for transmission line de-icing research and support.
The invention has the beneficial effects as follows:
1, the DC voltage of test platform output both can be regulated by pressure regulator, can be combined by connection in series-parallel again, the most in fact
The wide range regulation of existing output voltage；
2, configure complete ice-melt disconnecting link, can realize flexibly according to three-phase conducting wire and the different ice-melt demands of two ground wires
The ice-melting mode that combination is abundant；
3, the ice-melt requirement of wire and ground wire can be met by a set of DC de-icing device simultaneously, save transmission line de-icing
The investment of research.
The invention will be further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Wherein, 1 three-phase regulator, 2 12 pulsating wave rectifier transformers, 3 the 1st Pulses Rectifiers, 4 second
Six Pulses Rectifiers, 5 direct current output series connection disconnecting links, 6 direct current output-parallel the first disconnecting links, 7 direct current output-parallels second
Disconnecting link, 8 direct current output cathode buses, 9 direct current output negative pole buses, 10 A phase conductor the first ice-melt disconnecting links, 11 A phases
Wire the second ice-melt disconnecting link, 12 B phase conductor the first ice-melt disconnecting links, 13 B phase conductor the second ice-melt disconnecting links, 14 C phase conductors
First ice-melt disconnecting link, 15 C phase conductor the second ice-melt disconnecting links, 16 first Ground wire with insulation ocver ice-melt disconnecting links, 17 second is insulated
Line ice-melt disconnecting link.
Detailed description of the invention
Seeing accompanying drawing 1, Fig. 1 show a kind of test platform one realizing wire ground wire combination DC ice melting of the present invention
Specific embodiment.Three-phase regulator 1 in this embodiment uses Chinese Shanghai voltage adjuster Manufacturing Co., Ltd to produce
TSJA-1353 type triphase induction type pressure regulator.12 pulsating wave rectifier transformer 2 uses Zhuzhou section of China power electrical equipment limited
The ZHS-600kVA type rectifier transformer that company produces.One or six Pulses Rectifier the 3, the 2nd 6 Pulses Rectifier 4 uses China
The ZHS-1500A type fairing that Hunan Hui Cui Power Tech Corp. Inc. produces.Direct current output series connection disconnecting link 5, direct current output
First disconnecting link 6, direct current output-parallel the second disconnecting link 7, A phase conductor the first ice-melt disconnecting link 10, A phase conductor the second ice-melt disconnecting link in parallel
11, B phase conductor the first ice-melt disconnecting link 12, B phase conductor the second ice-melt disconnecting link 13, C phase conductor the first ice-melt disconnecting link 14, C phase conductor
Second ice-melt disconnecting link the 15, first Ground wire with insulation ocver ice-melt disconnecting link the 16, second Ground wire with insulation ocver ice-melt disconnecting link 17 uses China's Changsha electrical equipment
The GW9-10/6000 type disconnecting switch that switch company limited produces.Direct current output cathode bus 8, direct current output negative pole bus 9 are adopted
The cast copper busbar produced with Chinese Guangdong height goddess of lightning line company limited, through-current capability is up to 6000A.Above-mentioned three-phase regulator 1,
12 pulsating wave rectifier transformer the 2, the 1st Pulses Rectifier the 3, the 2nd 6 Pulses Rectifier 4, direct current output series connection disconnecting link 5, straight
Stream output-parallel the first disconnecting link 6, direct current output-parallel the second disconnecting link 7, direct current output cathode bus 8, direct current output negative pole bus
9, A phase conductor the first ice-melt disconnecting link 10, A phase conductor the second ice-melt disconnecting link 11, B phase conductor the first ice-melt disconnecting link 12, B phase conductor
Two ice-melt disconnecting links 13, C phase conductor the first ice-melt disconnecting link 14, C phase conductor the second ice-melt disconnecting link the 15, first Ground wire with insulation ocver ice-melt disconnecting link
16, the second Ground wire with insulation ocver ice-melt disconnecting link 17 is by the technical solution of the invention described above, and shown in 1, structure is installed referring to the drawings.
When actually used, three phase mains, after three-phase regulator pressure regulation, inputs to 12 pulsating wave rectifier transformer, 12
Pulse wave rectifier transformator two phase contrasts of output are the three-phase voltage of 30 °, respectively through the one or six Pulses Rectifier and the second six kinds of pulses
Ripple rectifier rectification, produces two DC voltages.If closing, direct current output series connection disconnecting link, disconnects direct current output-parallel the first disconnecting link
With direct current output-parallel the second disconnecting link, the series connection output of two DC voltages can be realized；Direct current output-parallel the first cutter if closing
Lock and direct current output-parallel the second disconnecting link, disconnect direct current output series connection disconnecting link, can realize the Parallel opertation of two DC voltages.Directly
Multiple ice-melt disconnecting link it is connected to respectively on stream output cathode bus and direct current output negative pole bus, by the combination of ice-melt disconnecting link, can
Realize following multiple ice-melting mode: (1), if biphase wired in series ice-melt need to be carried out, can close two phase conductors respective first respectively
Ice-melt disconnecting link and the second ice-melt disconnecting link, such as melt A phase conductor series connection B phase conductor time, can close A phase conductor the first ice-melt disconnecting link and
B phase conductor the second ice-melt disconnecting link, and disconnect other ice-melt disconnecting link；(2) if another phase of need to connecting after carrying out biphase conductor in parallel is led
Line ice-melt, the first ice-melt disconnecting link of two phase conductors that can close, then the second ice-melt disconnecting link of another phase conductor that closes, such as, melt A phase
After conductor in parallel B phase conductor during series connection C phase conductor, A phase conductor the first ice-melt disconnecting link that can close, B phase conductor the first ice-melt disconnecting link
With C phase conductor the second ice-melt disconnecting link, and disconnect other ice-melt disconnecting link；(3) if the series connection ice-melts of two ground wires need to be carried out, two can be closed
The respective first ice-melt disconnecting link of root ground wire and the second ice-melt disconnecting link, i.e. close the first Ground wire with insulation ocver ice-melt disconnecting link and second insulated
Line ice-melt disconnecting link, and disconnect other ice-melt disconnecting link；(4) if a ground wire need to be carried out connects a phase conductor ice-melt, can close respectively
Ground wire and the respective first ice-melt disconnecting link of wire and the second ice-melt disconnecting link, such as when melting the first Ground wire with insulation ocver series connection A phase conductor, can
Close the first Ground wire with insulation ocver ice-melt disconnecting link and A phase conductor the second ice-melt disconnecting link, and disconnects other ice-melt disconnecting link.Therefore, this
The test platform of invention, can be adjusted flexibly the mode of connection, wire or the multiple ice-melt demand of ground wire when meeting circuit actual ice-melt,
There is provided for transmission line de-icing research and support.
A kind of test platform realizing wire ground wire combination DC ice melting of the present invention of said structure, is transported by scene
OK, it is proved to ice-melt respond well, esy to use, safe and reliable, it is fully achieved design requirement.
Claims (2)
1. the test platform that can realize wire ground wire combination DC ice melting, it is characterised in that include DC output power, straight
Stream output-parallel the first disconnecting link, direct current output-parallel the second disconnecting link, direct current output cathode bus, direct current output negative pole bus, A phase
Wire the first ice-melt disconnecting link, A phase conductor the second ice-melt disconnecting link, B phase conductor the first ice-melt disconnecting link, B phase conductor the second ice-melt disconnecting link,
C phase conductor the first ice-melt disconnecting link, C phase conductor the second ice-melt disconnecting link, the first Ground wire with insulation ocver ice-melt disconnecting link and the second Ground wire with insulation ocver melt
Skates lock, described DC output power includes the first DC output power and the second DC output power, and described first is straight
Stream out-put supply and the second DC output power direct current output positive pole be connected in parallel by direct current output-parallel the first disconnecting link,
Negative pole is connected in parallel by direct current output-parallel the second disconnecting link；The positive pole of the direct current output after parallel combination and negative pole are respectively
It is connected to direct current output cathode bus and direct current output negative pole bus；Direct current output cathode bus passes through A phase conductor the first ice-melt cutter
Lock, B phase conductor the first ice-melt disconnecting link, C phase conductor the first ice-melt disconnecting link and the first Ground wire with insulation ocver ice-melt disconnecting link are led with A phase respectively
Line, B phase conductor, C phase conductor and the first Ground wire with insulation ocver are connected；Direct current output negative pole bus by A phase conductor the second ice-melt disconnecting link,
B phase conductor the second ice-melt disconnecting link, C phase conductor the second ice-melt disconnecting link and the second Ground wire with insulation ocver ice-melt disconnecting link respectively with A phase conductor, B
Phase conductor, C phase conductor and the second Ground wire with insulation ocver are connected, and also include direct current output series connection disconnecting link, the first described direct current output electricity
The positive pole of the negative pole of the direct current output in source and the direct current output of the second DC output power is connected by direct current output series connection disconnecting link
Connect.
A kind of test platform realizing wire ground wire combination DC ice melting the most according to claim 1, it is characterised in that
Described DC output power includes three-phase regulator, 12 pulsating wave rectifier transformer, the one or six Pulses Rectifier and the two or six
Pulses Rectifier, the described external three phase mains of three-phase regulator input, output terminate the three of 12 pulsating wave rectifier transformer
Input mutually；Two three-phase outputs of described 12 pulsating wave rectifier transformer connect the one or six Pulses Rectifier and the second six kinds of pulses respectively
The three-phase input of ripple commutator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010131.2A CN104577926B (en) | 2015-01-08 | 2015-01-08 | The test platform of wire ground wire combination DC ice melting can be realized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510010131.2A CN104577926B (en) | 2015-01-08 | 2015-01-08 | The test platform of wire ground wire combination DC ice melting can be realized |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577926A CN104577926A (en) | 2015-04-29 |
| CN104577926B true CN104577926B (en) | 2016-11-16 |
Family
ID=53093405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510010131.2A Active CN104577926B (en) | 2015-01-08 | 2015-01-08 | The test platform of wire ground wire combination DC ice melting can be realized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104577926B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300200A (en) * | 2015-05-29 | 2017-01-04 | 国家电网公司 | A kind of removable DC de-icing device having STATCOM function concurrently and de-icing method thereof |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505043A (en) * | 2009-03-06 | 2009-08-12 | 南方电网技术研究中心 | Method for automatically switching between DC ice melting three-phase AC line |
| CN101847856A (en) * | 2010-05-13 | 2010-09-29 | 湖南省电力公司试验研究院 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
| CN103280755A (en) * | 2013-06-20 | 2013-09-04 | 国家电网公司 | Twelve-pulse-wave ice melting rectifier variable flow output mechanism |
| CN103378574A (en) * | 2012-04-25 | 2013-10-30 | 南京南瑞继保电气有限公司 | Control protection method for achieving deicing function of direct-current deicing device |
| CN204316056U (en) * | 2015-01-08 | 2015-05-06 | 国家电网公司 | The test platform of wire ground wire combination DC ice melting can be realized |
-
2015
- 2015-01-08 CN CN201510010131.2A patent/CN104577926B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505043A (en) * | 2009-03-06 | 2009-08-12 | 南方电网技术研究中心 | Method for automatically switching between DC ice melting three-phase AC line |
| CN101847856A (en) * | 2010-05-13 | 2010-09-29 | 湖南省电力公司试验研究院 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
| CN103378574A (en) * | 2012-04-25 | 2013-10-30 | 南京南瑞继保电气有限公司 | Control protection method for achieving deicing function of direct-current deicing device |
| CN103280755A (en) * | 2013-06-20 | 2013-09-04 | 国家电网公司 | Twelve-pulse-wave ice melting rectifier variable flow output mechanism |
| CN204316056U (en) * | 2015-01-08 | 2015-05-06 | 国家电网公司 | The test platform of wire ground wire combination DC ice melting can be realized |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104577926A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3034698C (en) | Portable emergency power supply | |
| CN101242087A (en) | Ice fusion method for power transmission line | |
| WO2021136286A1 (en) | System and method for melting ice on overhead line by using photovoltaic power generation | |
| CN102623941B (en) | Direct current deicing device for 10KV rural power grid distribution line | |
| CN101604833B (en) | Ground wire deicing device capable of combined use | |
| CN105137212B (en) | A kind of high-speed power electrical switch realizes the method for short-circuit test between converter valve polar curve | |
| CN203367934U (en) | DC deicing system | |
| CN104600650B (en) | Wire ground wire combination DC ice melting test method based on all insulation ground line technology | |
| CN101847856A (en) | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification | |
| CN105826889A (en) | Transmission line charged segmented DC ice melting method | |
| CN104577926B (en) | The test platform of wire ground wire combination DC ice melting can be realized | |
| CN215835111U (en) | Direct-current ice melting system applied to overhead ground wire and direct-current ice melting equipment thereof | |
| CN108092182A (en) | Ultra-high-tension power transmission line is segmented de-icing method and system | |
| CN103337824A (en) | Segmentation direct-current deicing system of extreme high voltage direct-current transmission line | |
| CN204316056U (en) | The test platform of wire ground wire combination DC ice melting can be realized | |
| CN102299499A (en) | Ice melting scheme of circuit alternating-current short circuit after voltage reduction for 10kV power supply through 35kV main transformer | |
| CN101436768A (en) | Power line DC ice-melting device | |
| CN108933455A (en) | Over-voltage protection method and device for wind power plant | |
| CN202474771U (en) | Mobile overhead ground wire direct-current de-icing system | |
| CN203481758U (en) | Output switching system of direct current ice-melting device | |
| CN201436754U (en) | Ground wire ice-thawing device capable of being used combinedly | |
| CN202650795U (en) | Split type rectifier transformer for DC-based deicing | |
| CN205016973U (en) | Electric current of special high voltage direct current ice -melt device converges and short circuit system | |
| CN201234103Y (en) | Transmission line DC ice melting device capable of combined use | |
| CN202550450U (en) | Three-ring transformer alternating current ice melting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |