Cable material preparation method and system
A cable and electric tree technology, applied in the field of cable material preparation methods and systems, can solve the problems of internal bubbles in insulation, electric field distortion of insulating materials, electric field distortion, etc.
Pending Publication Date: 2021-12-14
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology
[0005] With the expansion of the grid scale, high-voltage DC cables are gradually being widely used in power transmission and distribution systems. Polypropylene is used as a new type of cable insulation material due to its high melting point, high breakdown strength, environmental protection and recyclability, but the cables are running The process may be affected by various external conditions, resulting in defects such as air bubbles in the insulation, and local electric field distortion. At the same time, the change of cable temperature also affects the conductivity of the insulating material and the accumulation of space charges, which distorts the internal electric field of the insulating material and forms Electrical dendrite channels, eventual breakdown
Method used
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[0051] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0052] In view of the problems existing in the prior art, an embodiment of the present invention provides a method for preparing a cable material, including:
[0053] Obtain self-healing microcapsule powder particles;
[0054] Obtain curing agent microcapsule powder particles;
[0055] adding a polypropylene matrix to the self-healing microcapsule powder particles for mixing to obtain a first mixture;
[0056] adding the curing agent microcapsule powder particles and boron trifluoride catalyst to the first mixture to obtain a second mixture;
[0057] The second mixture ...
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The invention discloses a cable material preparation method and system. The method comprises the following steps: obtaining self-repairing microcapsule powder particles; obtaining curing agent microcapsule powder particles; adding a polypropylene matrix into the self-repairing microcapsule powder particles, and mixing to obtain a first mixture; adding a curing agent microcapsule powder particles and a boron trifluoride catalyst into the first mixture to obtain a second mixture; and carrying out molding treatment on the second mixture to obtain the anti-electrical tree aging cable material. Polypropylene is added into the microcapsule repairing reagent, when electrical tree cracks appear in a matrix, the capsule is opened, the repairing reagent in the capsule is released to react with the built-in catalyst, the cracks are finally filled, the resistance of the cable material to electrical tree branches is improved, the service life of a cable is prolonged, and the microcapsule repairing reagent can be widely applied to the technical field of cable material preparation.
Description
technical field [0001] The invention relates to the technical field of cable material preparation, in particular to a cable material preparation method and system. Background technique [0002] Noun introduction: [0003] Electric tree branch: Since the cable may be affected by various external conditions during operation, defects such as bubbles appear in the interior of the insulation, the local electric field strength increases, and eventually breaks down. Because its discharge channel is similar to the shape of a tree branch, it is called its For electric branches. [0004] Microcapsule self-healing: A microcapsule-type repairing agent controlled by cracks is added to the polymer material. When a crack occurs in the material, the capsule opens and releases the repairing agent in it to react with the built-in catalyst to finally fill the crack. [0005] With the expansion of the grid scale, high-voltage DC cables are gradually being widely used in power transmission and...
Claims
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Login to View More IPC IPC(8): C08L23/12C08L63/00C08L61/24C08L71/00C08L33/12H01B3/44B01J13/02
CPCC08L23/12H01B3/441B01J13/02C08L2203/202C08L63/00C08L61/24C08L71/00C08L33/12
Inventor 罗思敏莫文雄王勇栾乐许中徐硕周凯孔令明肖天为马智远
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD