Power grid monitoring signal analysis method based on cosine distance discrimination

Abstract

The invention relates to a power grid monitoring signal analysis method based on cosine distance discrimination, and belongs to the field of power grid dispatching automation safety. In the analysis method, based on a signal monitored by a power grid dispatching automation system, mapping analysis is carried out on the signal, and a mapped fault type is obtained through the following mapping method analysis according to the monitoring signal; monitored signal characteristics are counted based on a power grid dispatching automation system; the signal features obtained by statistics in the step1 are classified; and mapping calculation is performed according to the signal features classified in the step 2 to obtain different fault types. According to the cosine distance discrimination method, cosine values of two vectors are used for measuring the difference between two individuals, more differences are distinguished from the direction, and the cosine distance discrimination method is not sensitive to individual numerical characteristics. According to the cosine distance discrimination-based power grid monitoring signal analysis method, the influence of abnormal monitoring signals onthe discrimination result can be effectively weakened, and the problem of possible non-uniform measurement standards is solved.

Description

technical field [0001] The invention relates to a power grid monitoring signal analysis method based on cosine distance discrimination, which belongs to the field of power grid scheduling automation security. Background technique [0002] With the continuous expansion of the grid scale, the structure of the grid is becoming more and more complex, and the operation mode of the system is changing rapidly, so the operation management is facing greater challenges. However, there are many types of power grid monitoring information and a huge amount of data. It is very necessary to monitor power grid monitoring information through scientific methods, classify and analyze to find out the operation rules of the power grid to make decisions quickly. [0003] The monitoring business was merged into the control center business after the adjustment of the "Three Sets and Five Majors". Previously, the processing and analysis of monitoring signal data in various regions was still in the e...

AI Technical Summary

Problems solved by technology

At present, the monitoring signal data of the power grid dispatching automation system is various, the data volume is huge, the data level is low, and there is no effective analysis method, which makes the work of managing the power grid consume a lot of manpower and material resources, but the efficiency is very low.

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