An Electric Field Characterization Method for Rod-Plate Gap Structures
A technology of gap structure and electric field, applied in design optimization/simulation, special data processing application, CAD numerical modeling, etc., can solve problems such as restricting the application of breakdown voltage prediction method, difficult to define spatial region, and irregular electrode structure. To achieve the effect of convenient engineering application, simplified extraction process and easy access
Active Publication Date: 2021-05-04
WUHAN UNIV
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Problems solved by technology
However, for complex engineering gap structures, such as the transmission line-tower air gap, the electrode structure is extremely irregular, and it is difficult to define spatial regions such as "the entire area, discharge channel, and electrode surface", which makes this set of electric field feature sets unable to be applied to power transmission and transformation. Electrical engineering gap structure restricts the application of breakdown voltage prediction methods
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[0029] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0030] Present embodiment adopts following technical scheme:
[0031] An electric field characterization method for a rod-plate gap structure. The three-dimensional electric field distribution of the rod-plate gap is obtained through electrostatic field simulation calculations, and the path where the shortest geometric distance between the rod electrode and the plate electrode is defined as the shortest path. On the shortest path Select n sampling points equidistantly, extract the original data such as coordinates and electric field strength of n sampling points, and calculate the electric field characteristic quantity characterizing the rod-plate gap structure, and map the three-dimensional space structure to one-dimensional path characteristics.
[0032] Also, the rod-plate gap applies a high voltage to the rod electrodes, and the plate electrodes ar...
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The invention relates to high-voltage and insulation technology, in particular to an electric field characterization method for a rod-plate gap structure, which includes obtaining the three-dimensional electric field distribution of the rod-plate gap through electrostatic field simulation calculation, and calculating the shortest geometric distance between the rod electrode and the plate electrode. The path on which it is located is defined as the shortest path; it is equidistantly selected on the shortest path n sampling points ( n is a positive integer), extract n The coordinates of each sampling point and the original data of the electric field strength; according to the extracted original data, the electric field feature set characterizing the rod-plate gap structure is calculated, and then the three-dimensional space structure is mapped to the one-dimensional path feature. The shortest path electric field feature set proposed by this method is easy to obtain and the extraction process is simple. It can be used to replace simple geometric parameters such as electrode size and gap distance. Complex engineered gap structures with decreasing electric field distribution curves.
Description
technical field [0001] The invention belongs to the technical field of high voltage and insulation, and in particular relates to an electric field characterization method of a rod-plate gap structure. Background technique [0002] Air gap is the main form of external insulation for AC / DC transmission lines, substations and converter stations, and its discharge voltage is an important basis for external insulation design. At present, the structural design of the air gap mainly depends on the discharge test. The empirical formula of the discharge voltage and the gap distance is obtained through the test, and then the gap distance required to meet the insulation requirements is determined. However, it is difficult to characterize the three-dimensional spatial structure of the air gap only by the gap distance, and the empirical formulas obtained by fitting the experimental data often have limited applicability and are difficult to be extended to other gap arrangements. For typi...
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IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23G06F2111/10Y02E60/00
Inventor 邱志斌阮江军王学宗金颀徐闻婕
Owner WUHAN UNIV