BS PD IEC/TR 62874:2015，这是一份技术报告，为估算消耗量提供了指导 通过对一些化合物的分析，得出变压器纤维素绝缘体的热寿命 溶解在绝缘矿物油中。2-糠醛分析结果的比较 （2-FAL）和碳氧化物及其对应的典型值 设备系列提供了有关纸张热降解的估计信息。绝缘纸的老化率可在短时间内（例如1年）通过以下方式进行评估: 定期监测油中的2-FAL和碳氧化物含量，并将其与 典型的增长率。一种用于评估纸张热降解的统计方法，以及 给出了老化率。与纸张相关的参数浓度和增加率的典型值 老龄化是从收集的统计数据库中推断出来的，并在附件a中报告。它们可以用作粗略的指南，但不应被视为阈值。本技术报告仅适用于填充绝缘材料的变压器和电抗器 矿物油和牛皮纸绝缘。指定的方法和程序应 可作为研究纤维素热降解的实用指南 绝缘，而不是作为算法来计算 论文本技术报告中描述的纸张热寿命评估协议适用于 浸渍矿物油的变压器和电抗器，用牛皮纸绝缘。任何设备 填充除矿物油以外的绝缘液体（即酯、硅酮）或用固体绝缘 牛皮纸以外的材料（i。 e、 TUP-热升级牛皮纸，合成 聚合物）不在本技术报告的范围内。本技术报告适用于已提交定期报告的设备 服务期间的监控实践，以及已知的维护和故障历史。交叉引用:CIGRE WG D1。01.10IEC 60076-7IEEE标准C57。91-1995年IGRE WG D1。01.TF13IEC 60450IEC 60567IEC 60814IEC 60970IEC 61198IEC 60666IEC 60599购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS PD IEC/TR 62874:2015, which is a Technical Report provides guidance for the estimation of consumed thermal life of transformers' cellulosic insulators, through the analysis of some compound dissolved in the insulating mineral oil. A comparison between analytical results of 2-furfural (2-FAL) and carbon oxides and their correspondent typical values estimated for different families of equipment gives information on the estimated thermal degradation of papers.The ageing rate of insulating papers can be evaluated, in short time ranges (e.g. 1 year), by regularly monitoring 2-FAL and carbon oxides content in the oil and by comparing them to typical rates of increase.A statistical approach for the estimation of paper thermal degradation, and the evaluation of ageing rate is given.Typical values for concentrations and rates of increase of the parameters related to paper ageing were extrapolated from a statistical database collected, and are reported in Annex A.They may be used as a rough guide, but they should not be considered as threshold values.This Technical Report is only applicable to transformers and reactors filled with insulating mineral oils and insulated with Kraft paper. The approaches and procedures specified should be taken as a practical guidance to investigate the thermal degradation of cellulosic insulation, and not as an algorithm to calculate the actual degree of polymerization (DP) of papers.The paper thermal life evaluation protocol described in this Technical Report applies to mineral oil impregnated transformers and reactors, insulated with Kraft paper. Any equipment filled with insulating liquids other than mineral oil (i.e. esters, silicones) or insulated with solid materials other than Kraft paper (i.e. TUP - thermally upgraded Kraft paper, synthetic polymers) is outside of the scope of this Technical Report.This Technical Report is applicable to equipment that has been submitted to a regular monitoring practice during the service, and for which maintenance and fault history is known.Cross References:CIGRE WG D1.01.10IEC 60076-7IEEE Std C57.91-1995CIGRE WG D1.01.TF13IEC 60450IEC 60567IEC 60814IEC 60970IEC 61198IEC 60666IEC 60599All current amendments available at time of purchase are included with the purchase of this document.