Nano particle sphere surface charge distribution calculating method and device
A technology of nano-particles and calculation methods, applied in electrostatic field measurement and other directions, can solve the problems of increasing the difficulty of transformer insulation design and manufacturing, and achieve the effect of improving insulation performance
Active Publication Date: 2018-02-23
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology
Transformer oil is a liquid dielectric with excellent insulation performance, and has been widely used in power transformers. With the rapid development of UHV power grids in my country, the voltage level of power systems continues to increase. In order to save production costs and space resources, the transformer itself is gradually Compactness, which further increases the difficulty of transformer insulation design and manufacture; at the same time, there is inevitably space charge in transformer oil, and the appearance of space charge does not necessarily cause breakdown, but it can affect the breakdown of transformer oil by distorting the field strength strength
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0049] It should be noted that the nanoparticle ball mentioned in the description is the nanoparticle in the prior art. For the convenience of description, the nanoparticle is regarded as a spherical particle for illustration.
[0050] The embodiment of the present invention provides a method for calculating the charge distribution on the spherical surface of nanoparticles, such as figure 1 As shown, the method includes:
[0051] S10. Based on the space charg...
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The invention provides a nano particle sphere surface charge distribution calculating method and a nano particle sphere surface charge distribution calculating device, which relate to the field of high-voltage insulation media, and can obtain the distribution condition of surface charges of a nano particle. The nano particle sphere surface charge distribution calculating method comprises the stepsof: calculating an internal field intensity and an external field intensity of a nano particle sphere after applying an external electric field based on a space charge generation mechanism; acquiringan internal surface field intensity and an external surface field intensity of the nano particle sphere according to the internal field intensity and the external field intensity of the nano particlesphere; and calculating surface charge density of the nano particle sphere according to the internal surface field intensity and the external surface field intensity of the nano particle sphere.
Description
technical field [0001] The invention relates to the field of high-voltage insulating media, in particular to a calculation method and device for spherical charge distribution of nanoparticles. Background technique [0002] As the core equipment of energy conversion and transmission in the power system, power transformers have a safe and stable operation that is related to people's normal life and the economic lifeline of the country. The internal insulation discharge caused by the operation shock will bring serious consequences. Transformer oil is a liquid dielectric with excellent insulation properties, and has been widely used in power transformers. With the rapid development of UHV power grids in my country, the voltage level of power systems continues to increase. In order to save production costs and space resources, the transformer itself is gradually Compactness, which further increases the difficulty of transformer insulation design and manufacture; at the same time, ...
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IPC IPC(8): G01R29/14
CPCG01R29/14
Inventor 施健蔡汉生贾磊刘刚胡上茂冯宾张义廖民传胡泰山李瑞显屈路
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD