Distribution transformer risk assessment model construction method and risk assessment method and system

Abstract

The invention discloses a distribution transformer risk assessment model construction method and risk assessment method and system. The method comprises steps of constructing a service time dimensionmodel according to the service time dimension characteristic quantity, constructing an environment climate dimension model according to the environment climate dimension characteristic quantity, and constructing a monitoring data dimension model according to the monitoring data dimension characteristic quantity; finally, according to the service time dimension model, the environmental climate dimension model and the monitoring data dimension model, a transformer risk assessment model based on multi-dimensional feature fusion is constructed, and compared with a traditional risk assessment method which only considers a single-dimensional model and manual intervention, the model comprehensively considers multi-dimensional risk influence factors, and the risk assessment accuracy is improved. According to the risk assessment method and system, automatic risk assessment and active risk prevention and control are achieved, and the risk assessment method and system have important significancein prolonging the service life of the distribution transformer, reducing the potential risk of operation of a power distribution network and guaranteeing safe and reliable operation of a power distribution system.

Description

technical field [0001] The invention relates to a method for constructing a distribution transformer risk assessment model, a risk assessment method and a system, and belongs to the technical field of distribution automation and operation and maintenance. Background technique [0002] Distribution transformer is one of the most widely used electrical equipment, and its safe operation is extremely important in industrial production and civil life. my country's distribution transformers are of various types and scattered. On the one hand, their operational reliability decreases with the passage of service time. On the other hand, the uncertainty of load in the distribution network, random failures of equipment, external and human factors Therefore, the importance of distribution transformer risk assessment has become increasingly prominent. [0003] The existing distribution transformer risk assessment method mainly uses a single historical statistical data or operating sample...

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Problems solved by technology

[0003] The existing distribution transformer risk assessment method mainly uses a single historical statistical data or operating sample data to conduct risk assessment on the operation status of the transformer through manual intervention, and then evaluates whether operation and maintenance are needed. The model used in the assessment is single. The consideration factors are not comprehensive enough, the accuracy is poor, and the degree of automation is not high

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