基于进化雷达图的油纸绝缘状态进阶评估方法

Evolutionary oil-paper insulation condition assessment method based on evolutionary radar chart

为提高油浸式变压器运行的可靠性及降低其全寿命周期成本,将状态检修引入大型油浸式电力变压器势在必行。由于油纸绝缘的寿命决定整个变压器的寿命,所以完善的变压器油纸绝缘的状态评估方法的建立是变压器状态检修的实现的前提。文中将进化雷达图引入油纸绝缘的状态评估过程,提出了将单指标初步评价与多指标综合评估相结合的油浸式变压器油纸绝缘状态进阶评估方法,并确立了完整的评估流程,实现了对油纸绝缘状态的定性及定量评估。通过算例分析,证明了该方法具有步骤简洁、快捷有效且易于在线实现的特点,为油浸式变压器油纸绝缘状态评估的实现提供了新的思路。

In order to improve reliability and reduce the life-cycle costs of oil-immersed transformer,the introduction of condition-based maintenance for oil-immersed power transformer is imperative.For the service life of oil-paper insulation determines the service life of the whole transformer,the establishment of accelerated assessment method of oil-paper insulation condition is the precondition of condition-based maintenance.In this paper,the evolutionary radar chart is introduced in the condition assessment process of the oil-paper insulation and the assessment method combined preliminary evaluation about single index and multi-index comprehensive evaluation is established as well as the complete process of condition assessment about both qualitative assessment and quantitative evaluation.The cases analysis shows the steps of this method are simple and effective in the condition assessment for the oil-paper insulation and this method also can be achieved easily online,which provides a new way for online condition assessment of oil-paper insulation.