A method for evaluating a health index of a real-time state of a transformer

Abstract

The invention discloses a method for evaluating a health index of a real-time state of a transformer, which comprises the following steps of: (1) formulating the health index of the transformer for representing the capability degree of maintaining the specific performance of the transformer, and selecting six types of core dynamic parameters capable of representing the state of the transformer according to the characteristics of the transformer; (2) determining a degradation degree and a corresponding deduction value of each type of core dynamic parameters according to a set evaluation guide rule, and determining a weight coefficient of each type of core dynamic parameters to form a state evaluation system; and (3) calculating the score according to the deduction value of the core dynamicparameter in the state evaluation system, and forming the health index of the real-time state of the transformer. According to the method, real-time and quantitative equipment state evaluation can becarried out on the transformer, so that operation and maintenance personnel can grasp the change trend of the equipment state in real time, fine and real-time evaluation and state prediction of the equipment state are realized, and a basis is provided for active operation and maintenance and intelligent decision making of the equipment.

Description

technical field [0001] The invention relates to a method for evaluating the real-time state of a transformer, in particular to a method for evaluating the health index of the real-time state of the transformer. Background technique [0002] At present, condition-based maintenance has been fully implemented for power transmission and transformation equipment. Accurate condition evaluation of equipment is an important basis for condition-based maintenance, which determines the content and cycle of equipment condition-based maintenance, which is directly related to the safe operation of the power grid and the economic benefits of power companies. [0003] The current state evaluation method of equipment is carried out according to relevant evaluation guidelines such as "Guidelines for State Evaluation of Oil-immersed Transformers". The main evaluation methods are as follows: transformer components are divided into: body, bushing, tap changer, cooling system and non-electric Pro...

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Problems solved by technology

[0006] In view of the above problems, the present invention proposes a method for evaluating the health index of the real-time state of the transformer, the purpose of which is to solve the problem that the existing state evaluation method cannot perform real-time and quantitative equipment state evaluation, so that the operation and maintenance personnel can grasp the equipment state in real time The change trend of the equipment can realize the fine, real-time evaluation and status prediction of the equipment status, and provide the basis for the active operation and maintenance of the equipment and intelligent decision-making

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