Evaluation method of polyurethane cell in post insulators
A post insulator, polyurethane technology, applied in the direction of supporting insulators, complex mathematical operations, etc., can solve the problems that cannot be evaluated comprehensively and systematically, such as cells, partial discharge, and affecting the overall performance of poured post insulators, so as to achieve excellent overall performance and good evaluation The effect of action
Active Publication Date: 2022-04-01
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology
[0002] Polyurethane is prone to the problem of uneven distribution of cells as the internal insulating material in poured composite post insulators
The existence of this kind of problem will distort the electric field in the post insulator, which may cause partial discharge. In severe cases, the post insulator may be broken down, affecting the safe and stable operation of the power transmission system.
The existing polyurethane cell evaluation methods cannot comprehensively and systematically evaluate the cells, which in turn affects the overall performance of the poured post insulator
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[0026] In order to more clearly understand the above objects, features and advantages of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the features in the embodiments of the present application may be combined with each other.
[0027] In the following description, many specific details are set forth in order to fully understand the embodiments of the present invention, and the described implementations are only part of the implementations of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present invention.
[0028] Unless defined otherwise, all technical and scientific terms u...
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The method for evaluating polyurethane cells in post insulators provided by the present invention is to select appropriate test points for the cells on the cross-section and longitudinal section inside the post insulator, measure the parameters of pore diameter, porosity, and specific surface area by mercury porosimetry, and combine the characterization of pore size distribution The measured value is further compared with the threshold value of each parameter, and the post insulator with qualified polyurethane cells is screened out, which plays a good role in evaluating the polyurethane cell of post insulators and ensures the excellent overall performance of post insulators for subsequent applications.
Description
technical field [0001] The invention relates to the technical field of insulators, and is particularly suitable for the evaluation method of polyurethane cell of post insulators. Background technique [0002] Polyurethane is prone to the problem of uneven cell distribution when used as the internal insulating material in poured composite post insulators. The existence of this kind of problem will distort the electric field in the post insulator, which may cause partial discharge. In severe cases, the post insulator may be broken down, affecting the safe and stable operation of the power transmission system. The existing polyurethane cell evaluation methods cannot comprehensively and systematically evaluate the cells, which in turn affects the overall performance of the poured post insulator. Contents of the invention [0003] In view of the above, it is necessary to provide an improved evaluation method for polyurethane cells in post insulators, which can effectively eval...
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IPC IPC(8): G06F17/18H01B17/14
CPCG06F17/18H01B17/14
Inventor 梅红伟管兮远王黎明
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV