中文摘要：

电力变压器运行的可靠性直接关系到电力系统的安全及供电的可靠性,为提高电力变压器计划检修和状态评估的有效性,提出了基于半梯形模型和模糊理论相结合的油浸式电力变压器运行状态的评估策略。本文重点加强了对油浸式电力变压器的故障机理的基础理论分析和研究,建立了电力变压器状态评估的性能指标体系,通过结合模糊综合评价法正确建立梯形的隶属度模型来对变压器的运行状态进行评估,并通过仿真分析验证了该方法的有效性。

英文摘要：

The reliability of the power transformer operation is closely linked to the security of power system and the reliability of power supply. To improve the effectiveness of planned maintenance of the power transformer, a method for evaluation strategy oil - immersed transformer running state was proposed based on the combination fuzzy theory and trapezoidal model. This paper strengthens the analysis and research basis of the failure mechanism theory of oil - immersed power transformer to establish the performance of transformer state evaluation index system, combi- ning the fuzzy theory to establish the trapezoidal membership degree model and evaluate the operating state of trans- former. The experimental simulations verify the effectiveness of the proposed method.