Power line icing assessment method based on filtering and support vector machine

A technology of support vector machine and power line, applied in the field of power system, can solve the problem of low evaluation accuracy and achieve the effect of accurate description and evaluation

Inactive Publication Date: 2015-12-16
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0005] However, since the icing of transmission lines is greatly affected by meteorological factors, especially the ambient temperature and relative humidity have a decisive influence on the formation of icing, the icing state of the line is not only uncertain, but also multi-factorial. The current online monitoring method for the icing state of the line has the defect of low evaluation accuracy

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  • Power line icing assessment method based on filtering and support vector machine
  • Power line icing assessment method based on filtering and support vector machine

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Embodiment Construction

[0019] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention. All similar structures and similar changes of the present invention should be included in the scope of protection of the present invention. The commas in all indicate the relationship between and.

[0020] An icing assessment method for power lines based on filtering and support vector machines provided by an embodiment of the present invention is characterized in that the specific steps are as follows:

[0021] 1) Set an icing evaluation time period, and use sensors to detect the line tension K, line inclination angle θ, line ambient wind speed v, and line ambient atmospheric pressure P;

[0022] 2) Carry out Kalman filter to the data acquired in step 1 (Kalman filter method is prior art);

[0023] 3) Carry out median filtering to the data grouping after Kalman filteri...

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Abstract

The invention provides a power line icing assessment method based on filtering and a support vector machine, relates to the technical field of an electrical power system and is to solve the technical problem of power transmission line assessment. The method is characterized by, to begin with, detecting line tension, line inclination angle, line environment wind speed and line environment atmosphere pressure of a power transmission line in the icing assessment time period; then, carrying out Kalman filtering, median filtering and mean filtering on the detected data in sequence; calculating out environment temperature difference, icing duration time and equivalent icing thickness of the power transmission line in the icing assessment time period according to the filtering data; next, carrying out optimal hyperplane training on the environment temperature difference, icing duration time and equivalent icing thickness by utilizing the SVM to obtain line icing probability of the power transmission line; and judging line icing state according to the obtained line icing probability. The method provided in the invention is suitable for assessing the icing state of the power transmission line.

Description

technical field [0001] The invention relates to power system technology, in particular to a technology based on a filtering and support vector machine-based ice coating evaluation method for power lines. Background technique [0002] Ice and snow disasters seriously threaten the safe operation of the power system. If it is light, it will cause accidents such as insulator string ice flash trip and interphase flashover trip, etc., which can restore the power supply cycle. Accidents with a long recovery period. While ice and snow disasters brought danger to the safe operation of the power grid, they also brought inconvenience to people's lives and brought losses to the national economy. [0003] At present, researches on the mechanical characteristics of overhead lines and the stability of power grids under ice and snow weather conditions have been carried out at home and abroad. [0004] This kind of research has been carried out at home and abroad. For example, Brostrom et ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 余鲲杨俊杰王青磊宋涛任堂正谭志强邓集瀚黄毅黄羹墙赵勤学
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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