110 kv cable
A cable and semi-conductive layer technology, applied in the field of 110kV cables, can solve the problems of lack of online monitoring means for power cables, high average failure rate of cables, and low mechanical properties, so as to achieve real-time monitoring of cable operating conditions and reduce power transmission costs , good mechanical properties
Inactive Publication Date: 2017-02-22
江苏华远电缆有限公司
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Problems solved by technology
The existing power cable sheath layer generally adopts rubber insulating sheath, which has poor waterproof performance and low mechanical properties.
[0003] Traditional power cable lines lack effective online monitoring methods for the cable operation system. Once the cable is laid and operated, it is in a state of no supervision or supervision is not timely. It is not paid attention until the cable fault occurs, resulting in a high average failure rate of the cable in the power grid. From the perspective of safety, it is urgent to take measures to monitor the operating status and aging degree of cables, avoid accidents, and ensure the safety of cables in the power grid.
In addition, because the load capacity of the cable is calculated theoretically, there is a large margin, and there is a certain waste. From an economic point of view, it is urgent to take measures to ensure that the maximum cable temperature does not exceed the allowable temperature of the cable. Maximize the transmission capacity of the cable to obtain greater economic benefits
Method used
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Embodiment Construction
[0015] The specific embodiment of the present invention will now be described in conjunction with the accompanying drawings.
[0016] like figure 1 As shown, a 110kV cable, the cable is divided conductor 1, conductor shielding layer 21, insulating layer 22, insulating shielding layer 23, water blocking buffer layer 3, semiconducting layer 4, corrugated aluminum layer 5 from inside to outside and the outer sheath; the inner surface of the water-blocking buffer layer 3 is provided with 18 water-blocking grease tanks 31, and the water-blocking grease tanks 31 are filled with water-blocking grease.
[0017] The temperature-sensing optical fiber 7 is housed in the water-blocking grease tank 31, and there are 2 temperature-sensing optical fibers 7 arranged symmetrically.
[0018] The outer sheath is an asphalt anti-corrosion layer or a hot-melt adhesive anti-corrosion layer 61 , a polyethylene layer 62 and a conductive coating 63 from the inside to the outside.
[0019] A kind of ...
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The invention relates to a cable, in particular to a 110 kV cable, comprising a conductor, a conductor shield layer, an insulating layer, an insulating shield layer, a watertight buffer layer, a semiconductive layer, a wrinkled aluminum layer and an outer sheath sequentially from inside to outside; the inner cylindrical face of the watertight buffer layer is provided with not less than 10 watertight grease grooves filled with watertight grease. At least one temperature-sensing fiber is mounted in the watertight grease grooves. The outer sheath comprises an asphalt anti-corrosion layer or hot-melt glue anti-corrosion layer, a polyethylene layer and a conductive coating sequentially from inside to outside. The 110 kV cable has good mechanical properties, small bending radius and good watertightness and is capable of monitoring cable operation condition in real time.
Description
technical field [0001] The invention relates to a cable, especially a 110kV cable. Background technique [0002] During the long-term use of the cable, due to the erosion of moisture and water, the transmission performance will be reduced, which will affect the normal use. Especially in the southern region, due to humidity, rain, and high groundwater levels, the water resistance of buried cables is particularly important. Users increasingly need a durable cable that can prevent moisture and moisture erosion to ensure cable transmission. performance and normal use. The existing power cable sheath layer generally adopts rubber insulating sheath, which has poor waterproof performance and low mechanical properties. [0003] Traditional power cable lines lack effective online monitoring methods for the cable operation system. Once the cable is laid and operated, it is in a state of no supervision or supervision is not timely. It is not paid attention until the cable fault occur...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/22H01B7/282H01B7/285H01B7/32H01B9/02
CPCH01B7/2825H01B7/225H01B7/285H01B7/322H01B9/021H01B9/027
Inventor 贺达园侯孝政贺顺忠
Owner 江苏华远电缆有限公司