CN102074300A - 500kV extra-high voltage (EHV) power cable - Google Patents
500kV extra-high voltage (EHV) power cable Download PDFInfo
- Publication number
- CN102074300A CN102074300A CN 201110053805 CN201110053805A CN102074300A CN 102074300 A CN102074300 A CN 102074300A CN 201110053805 CN201110053805 CN 201110053805 CN 201110053805 A CN201110053805 A CN 201110053805A CN 102074300 A CN102074300 A CN 102074300A
- Authority
- CN
- China
- Prior art keywords
- cable
- conductor
- ehv
- power cable
- high voltage
- 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.)
- Pending
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a 500kV extra-high voltage (EHV) power cable, comprising a conductor. The conductor is arranged in the center of the cable; the conductor is externally provided with a semiconductive gird, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semiconductive waterblocking expansion buffer layer, a corrugated aluminium sheath and a non-metallic sheath in sequence. The 500kV cross linked polyethylene (XLPE) EHV power cable is suitable for an outgoing line for transmitting EHV high-capacity electric energy. Compared with a low-desity polyethylene (LDPE) cable, the XLPE cable has the advantages of high working temperature, high allowable temperature limitvalue of short circuit, and preferable mechanical and physical properties of insulation.
Description
Technical field
The present invention relates to a kind of power cable, particularly 500KV extra-high voltage electric power cable.
Background technology
China is by XLPE cable manufacturing equipment and technology transfer, research and development by product, shorten the gap of high pressure XLPE cable and annex manufacture level and advanced foreign technology rapidly, but required super-clean cross-linkable Insulation Material and the ultra-smooth semiconductive shieldin material of production High Voltage XLPE Power Cable so far all relies on import; The material prescription of the rubber prefabricated component of High Voltage XLPE Power Cable Accessories and technology wait to improve and improve.Taking all factors into consideration China's High Voltage XLPE Power Cable technology still has gap with external advanced level, and manufacturing technology China of 500kV ultrahigh-voltage XLPE cable still is in blank.
Summary of the invention
Technical problem to be solved by this invention provides the extra-high voltage electric power cable that a kind of electric pressure reaches 500kV.
A kind of 500KV extra-high voltage electric power cable of the present invention, comprise the conductor that is positioned at cable center, outside conductor, set gradually semiconductive band, conductor shield, insulating barrier, insulation screen, semiconductive block water expansion resilient coating, corrugated aluminum sheath, non metallic sheath.
The XLPE extra-high voltage electric power cable of 500kV is applicable to the lead-out wire as the big capacity electric energy of transmission superhigh pressure, and this is because compare with the LDPE cable, XLPE cable working temperature height, and short circuit allowable temperature limit value is much higher, and the mechanical and physical performance of insulation is more excellent.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As Fig. 1,500KV extra-high voltage electric power cable of the present invention, comprise the conductor 1 that is positioned at cable center, outside conductor 1, set gradually semiconductive band 2, conductor shield 3, insulating barrier 4, insulation screen 5, semiconductive block water expansion resilient coating 6, corrugated aluminum sheath 7, non metallic sheath 8.
Because the domestic special ultra-clean crosslinked polyethylene material that still can not produce the 500kV cross-linked polyethylene insulated cable at present, and the special ultra-clean material that abroad provides is essential through long-distance transportation, and the ultra-clean level that it can guarantee is that opaque impurity maximum particle size is not more than 0.075mm in the 1kg belt transect.Design the 500kV cross-linked polyethylene insulated cable opaque impurity full-size that insulate for this reason and be no more than 0.075mm, being better than slightly at first draws water in the waste level ground of Japanese 500kV twisted polyethylene cable and China sky of installation and operation in 1988 in the world raises the insulating impurities level (0.08 mm) of the 500kV twisted polyethylene cable of introducing in the energy power station, and its corresponding 500kV crosslinking polyethylene-insulated cable insulation thickness is 35 mm.By impurity size significant correlation in crosslinked polyetylene insulated electrical strength of what and the insulation, example and 800mm in the reference
2500kV cross-linked polyethylene insulated cable impurity size be 32mm for insulation thickness under the 0.060mm situation, inferring the insulating impurities level is 800mm under the 0.075mm condition
2The insulation thickness of cable be 34mm as benchmark, adopt the Statistic Design principle of cable insulation, determine recommendation insulation thickness and the calculating conductor shielding and insulating surface electric field strength such as following table of the 500kV cross-linked polyethylene insulated cable in different conductor cross section:
As seen from the above table, the conductor screen electric field strength of the 500kV crosslinked cable of listed each cross-sectional area of conductor is no more than 16 kV/mm, and insulating surface electric field strength is no more than 7 kV/mm, meets the requirement to cable insulation of 500kV cross-linked cable insulating and annex.
Claims (1)
1. 500KV extra-high voltage electric power cable, it is characterized in that comprising the conductor (1) that is positioned at cable center, outside conductor (1), set gradually semiconductive band (2), conductor shield (3), insulating barrier (4), insulation screen (5), semiconductive block water expansion resilient coating (6), corrugated aluminum sheath (7), non metallic sheath (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110053805 CN102074300A (en) | 2011-03-07 | 2011-03-07 | 500kV extra-high voltage (EHV) power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110053805 CN102074300A (en) | 2011-03-07 | 2011-03-07 | 500kV extra-high voltage (EHV) power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102074300A true CN102074300A (en) | 2011-05-25 |
Family
ID=44032809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110053805 Pending CN102074300A (en) | 2011-03-07 | 2011-03-07 | 500kV extra-high voltage (EHV) power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102074300A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610319A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV ultra-high-voltage crosslinked polyethylene insulating power cable |
| CN102610320A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122456Y (en) * | 2007-11-30 | 2008-09-24 | 青岛汉缆股份有限公司 | High voltage power cable with embedded temperature-measuring optical fibre cable |
| CN101620897A (en) * | 2009-08-10 | 2010-01-06 | 杭州电缆有限公司 | Crosslinked cable for intelligent power network |
| CN201698819U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable with corrugated aluminum sheath |
-
2011
- 2011-03-07 CN CN 201110053805 patent/CN102074300A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122456Y (en) * | 2007-11-30 | 2008-09-24 | 青岛汉缆股份有限公司 | High voltage power cable with embedded temperature-measuring optical fibre cable |
| CN101620897A (en) * | 2009-08-10 | 2010-01-06 | 杭州电缆有限公司 | Crosslinked cable for intelligent power network |
| CN201698819U (en) * | 2010-04-14 | 2011-01-05 | 无锡市长城电线电缆有限公司 | Power cable with corrugated aluminum sheath |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610319A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV ultra-high-voltage crosslinked polyethylene insulating power cable |
| CN102610320A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN102610320B (en) * | 2012-03-28 | 2014-06-18 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN102610319B (en) * | 2012-03-28 | 2015-07-08 | 宜昌联邦电缆有限公司 | 750-1100kV ultra-high-voltage crosslinked polyethylene insulating power cable |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202258530U (en) | Electric railway 27.5kV single-phase alternating current power cable | |
| CN102074300A (en) | 500kV extra-high voltage (EHV) power cable | |
| RU133964U1 (en) | ELECTRIC FLEXIBLE CABLE | |
| CN202434259U (en) | 750kV ultra high voltage crosslinked polyethylene insulating power cable | |
| CN202003755U (en) | Three-core cross linking insulation water cooling power cable with voltage class of 6 to 35 kV | |
| CN208834801U (en) | One kind is around aluminium foil double shield cable architecture | |
| CN202067596U (en) | 500 kV extra-high-voltage power cable | |
| CN202084342U (en) | Soft power cable with silicon rubber insulation layer and butyronitrile polrvinyl chloride sheath | |
| CN104795134A (en) | Industrial anti-interference insulated cable | |
| CN107610832B (en) | Submarine cable with ultralow thermal resistance loss and preparation method thereof | |
| CN204496953U (en) | The hydroelectric station High voltage output construction of cable | |
| CN202363162U (en) | High voltage DC land cable | |
| CN205618283U (en) | Take conductive rubber's ignition coil | |
| CN202363163U (en) | High voltage DC submarine cable | |
| CN204496970U (en) | Hydroelectric station High voltage output cable | |
| CN204029423U (en) | A kind of flexible high pressure direct current power cable with cross-linked polyethylene insulation | |
| CN215815342U (en) | Low heat loss cable | |
| CN204537757U (en) | A kind of anti-tampering high-temperature-resistant power cable | |
| CN203288337U (en) | Polyvinyl chloride insulation power cable | |
| CN207409311U (en) | The crosslinked polyetylene insulated metallic sheath power cables of 220kV | |
| CN201383379Y (en) | Silicone rubber insulation medium-voltage special cable | |
| CN103400648A (en) | Copper wire screened power cable | |
| CN203562220U (en) | High temperature resistant compensation flat special cable | |
| CN202839104U (en) | Photo-crosslinking cable | |
| CN203799742U (en) | High-flexibility anti-deflection variable-frequency flexible cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110525 |