Distribution transformer lightning damage risk assessment method
A distribution transformer and risk assessment technology, applied in the field of lightning arresters, can solve problems such as the inability to understand distribution transformers, the different probability of distribution transformers being struck by lightning, and the risk assessment of lightning damage
Active Publication Date: 2019-10-29
GUANGXI POWER GRID ELECTRIC POWER RES INST
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Problems solved by technology
However, for areas with different lightning activities and areas with different topography, the probability of distribution transformers being struck by lightning is different.
At present, there is a lack of lightning risk assessment for outdoor distribution transformers in China, and it is impossible to know where and what terrain distribution transformers need to improve the lightning protection design level, or how to improve the lightning resistance level
As a result, distribution equipment in areas with strong lightning activities or mountainous areas that are prone to lightning strikes are frequently damaged by lightning strikes, and there is a lack of lightning risk assessment for the operating environment of distribution transformers, and there is no basis to improve the lightning protection transformation of distribution transformers
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the term "inner" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or i...
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The invention discloses a distribution transformer lightning damage risk assessment method, and relates to the technical field of power distribution. Firstly, the overvoltage tolerance level is determined through the insulation level of a distribution transformer winding, secondly, the lightning protection measures installed in the distribution transformer are combined to quantify the protection level of the lightning protection measures, and then the relation between the topography and landform of the area where the transformer is located and lightning stroke is quantified again; finally, a lightning activity rule of the area where the distribution transformer is located is counted; the lightning damage risk assessment result of the distribution transformer is calculated by analyzing thelightning resistance level of the distribution transformer, the existing lightning protection measure level of the distribution transformer, the lightning protection measure level of the landform of the area where the distribution transformer is located and the lightning activity intensity of the area where the distribution transformer is located. Early warning risk and lightning protection levelinformation are provided for an equipment operation and maintenance unit.
Description
technical field [0001] The invention relates to the technical field of lightning arresters, in particular to a lightning risk assessment method for distribution transformers. Background technique [0002] At present, the lightning protection measures for distribution transformers are mainly to reduce the grounding resistance and install lightning arresters, but the design standards do not consider the lightning activities in various places. The lightning activities in the north and the south are very different, especially in the southern coastal areas. The safe operation of the transformer has a greater impact. For outdoor distribution transformers in mountainous areas, strengthening measures in strong lightning areas have not been considered, resulting in lightning strike accidents of distribution transformers in areas with strong lightning activities in the south. [0003] In the design and construction stages, the lightning protection measures for distribution transforme...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q10/0639G06Q50/06
Inventor 黄志都蒋圣超俸波唐捷莫枝阅黄锋王乐覃秀君鲁林军
Owner GUANGXI POWER GRID ELECTRIC POWER RES INST