Description Method of Distribution Transformer State Deterioration Process Based on Markov Chain Model

A technology of distribution transformers and Markov chains, which is applied in the field of evaluation of the degradation law of distribution main equipment, can solve problems such as difficult to accurately describe the degradation process of transformers, and achieve an objective effect of description

Active Publication Date: 2021-01-01
WUHAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

At present, the state evaluation of transformers mainly uses fuzzy evaluation method, Bayes network method, etc., and uses Weibull distribution to predict the life of transformers. In today's increasingly abundant detection methods, Weibull distribution is difficult to accurately describe the deterioration process of transformers.

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  • Description Method of Distribution Transformer State Deterioration Process Based on Markov Chain Model
  • Description Method of Distribution Transformer State Deterioration Process Based on Markov Chain Model
  • Description Method of Distribution Transformer State Deterioration Process Based on Markov Chain Model

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Embodiment Construction

[0028] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. They are examples only and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the pur...

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Abstract

The invention relates to a deterioration law assessment technology of a primary power distribution device, in particular to a Markov chain model-based method for describing a state deterioration process of a power distribution transformer. The method comprises the following steps of 1, collecting and sorting deterioration historical records of devices same in type; 2, determining a state space which describes a deterioration degree; 3, establishing a statistical sample; and 4, calculating a state transfer probability. According to the method, a state parameter of the deterioration degree of the power distribution transformer can be definitely expressed; the reliability of expressing the deterioration degree by the state parameter is supported by a fault mechanism; and in addition, a brand-new state and a function fault state of a system can be defined by using a state parameter value which can be observed, so that the description of the state deterioration process of the power distribution transformer is objective, reasonable and accurate.

Description

technical field [0001] The invention relates to the technical field of evaluation of degradation law of power distribution main equipment, in particular to a method for describing the state degradation process of distribution transformers based on a Markov chain model. Background technique [0002] As the core equipment of the power system, the operation status of the transformer directly affects the safety and stability of the power consumption of the entire power consumption side. Evaluating the transformer degradation process can help power operators need to know the health status of the transformer in time for its repair and maintenance. Distribution transformers contain multiple components, each of which has different state information, and has different states at different time points. It is of great significance to study the transition rules of different states during the degradation process of transformers for the evaluation of transformer life and operation and main...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y04S10/50
Inventor 王军华邵建伟唐亚可
Owner WUHAN UNIV
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