Medium-voltage torsion-resistant power cable for wind power generator set and sheathing material of medium-voltage torsion-resistant power cable

Abstract

The invention discloses a medium-voltage torsion-resistant power cable for a wind power generator set and a sheathing material of the medium-voltage torsion-resistant power cable. The sheathing material comprises 45-55 parts of chlorinated polyethylene, 8-12 parts of magnesium hydroxide, 8-12 parts of white carbon black, 10-18 parts of modified calcined kaolin, 8-15 parts of a thermoplastic elastomer, 0.7-1.3 parts of an anti-aging agent, 1.6-2.4 parts of red lead masterbatch, 4.5-5.5 parts of antimony trioxide, 5.4-6.4 parts of light magnesium oxide, 3-5 parts of a calcium-zinc stabilizer, 0.25-0.35 part of stearic acid, 0.8-1.4 parts of high wear-resistant carbon black, 5.5-6.5 parts of a plasticizer, 4.5-5.5 parts of a cold-resistant plasticizer, 0.35-0.65 part of a coupling agent, 1.2-2.6 parts of a vulcanizing agent and 0.8-2.4 parts of a vulcanization accelerator. The chlorinated polyethylene sheath is adopted as a power core outer sheath of the torsion-resistant power cable, andcan withstand a highest temperature of 105 DEG C, requirements of power transmission and application performance of a high-carrying capacity torsion-resistant cable of an offshore wind power generator set are met under normal working conditions, and the problem that the service life of a 8 MW offshore wind power generator set torsion-resistant power cable is reduced due to no compliance of agingresistance, bending fatigue resistance, abrasion resistance, tearing resistance and high-and-low temperature resistance.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a medium-voltage torsion-resistant power cable sheath material for a wind-driven generator set, and a medium-voltage torsion-resistant power cable for a wind-driven generator set using the sheath material. Background technique [0002] Compared with land wind farms, offshore wind farms are located in a very complex and harsh marine environment, bearing a variety of random loads that vary with time and space, including wind, waves, currents, sea ice, and tides that act on the structure. , and is also threatened by earthquake action. Under such harsh environmental conditions, unfavorable factors such as environmental corrosion, marine organism adhesion, foundation soil erosion and foundation dynamic softening, material aging, component defects and mechanical damage, fatigue and damage accumulation of crack propagation will cause damage to offshore wind turbine structu...

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Problems solved by technology

[0004] The embodiment of the present invention provides a chlorinated polyethylene sheath material, which is used as the sheath material of the torsion-resistant power cable of the 8MW offshore wind power generating set to meet the requirements of the torsion-resistant power cable of the offshore wind power generating set under normal working conditions (operating temperature -40°C~+105°C) various power transmission and service performances, to solve the problem of anti-torsion power cables of 8MW offshore wind turbines due to aging resistance, bending fatigue resistance, wear resistance and tear resistance, and high and low temperature resistance. The problem of reduced service life due to compliance with standards

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