Condition evaluation method of distribution network transformer based on fuzzy theory

Abstract

The invention discloses a condition evaluation method of a distribution network transformer based on a fuzzy theory. The method comprises the following steps that a three-level index system of condition evaluation of a distribution transformer is established in accordance with data of daily check, routine tests and diagnostic tests of the distribution network transformer, an evaluation index set and a comment set are determined, wherein the evaluation index set contains all indexes in the three-level index system, and the evaluation set contains four conditions of normality, caution, abnormity and severity; an improved analytic hierarchy process is adopted to determine the weight of each index in the evaluation index set; a relatively deteriorative concept is adopted to determine an evaluation matrix of the distribution network transformer; and a grey relation theory is adopted to determine the condition level of the transformer. The condition evaluation method has the following beneficial effects that the condition of the distribution network transformer can be evaluated in batches, losses of manpower and material resources are reduced, the working efficiency and the condition evaluation accuracy are greatly increased, and the condition evaluation method has the advantage of strong practicability.

Description

technical field [0001] The invention relates to the technical field of state evaluation of distribution network transformers. Background technique [0002] With the continuous development of the modern economy, the scale of the distribution network is also expanding, and the safe operation of the distribution network system becomes more important. The reliability of power supply is directly related to the economic interests of users and enterprises themselves. The power distribution system is located at the end of the power system and is the link between the power system and users. People have higher and higher requirements for the reliability of power supply in the distribution network, which urgently needs to carry out status assessment in the distribution network. As an important equipment of distribution network, transformer is of great practical significance to carry out reliable condition assessment. [0003] The status assessment of distribution transformers involves...

AI Technical Summary

Problems solved by technology

If the analysis and calculation of a large amount of data only rely on manual processing, it is not only labor-intensive, time-consuming and labor-intensive, but also error-prone and requires a lot of manpower and material resources. This method of evaluating the status of transformers by relying on crowd tactics is different from the current power industry. Contrary to the effective policy, it will not work

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