配电变压器可靠性评估研究综述

Review of distribution transformer reliability assessment

配电变压器是电力配送的核心设备,其稳定安全的运行关系到整个电力系统的可靠性,故对其进行可靠性评估以保证配电变压器的正常运作。介绍总结了配电变压器的失效机理,包括绝缘老化机理和故障机理,从绝缘老化计算和不同评价方法两个方面详细总结了变压器的可靠性评估研究现状,分析不同方法的优缺点,最终提出配电变压器目前存在的问题以及未来的研究方向,为配电变压器可靠性评估研究提供一定的参考。

Distribution transformer is the core equipment of power distribution,its stable and safe operation is related to the reliability of the whole power system,so the reliability evaluation is carried out to ensure the normal operation of the distribution transformer.This paper introduces and summarizes the failure mechanism of distribution transformers,including insulation aging mechanism and fault mechanism,summarizes the research status of transformer reliability assessment in detail from two aspects of insulation aging calculation and different evaluation methods,analyzes the advantages and disadvantages of different methods,and finally puts forward the existing problems of distribution transformers and the future research direction.It provides some reference for the reliability evaluation of distribution transformer.