{"title":"电力变压器用热升级纸老化性能的新研究","authors":"B. Axelle, Mortha Gérard, Marlin Nathalie, Boiron Lucie, Ramousse Agnès, Brun Huguette","doi":"10.1109/eic47619.2020.9158663","DOIUrl":null,"url":null,"abstract":"In this paper, two studies are presented whose main objective is to go further on the comprehension of thermally upgraded paper ageing. The first one is about the accelerated ageing of standard (STD) and thermally upgraded (TU) Kraft paper in mineral oil. After plotting the viscometric degree of polymerization (DPv) according to the kinetic model proposed by Calvini in 2005 [1], the model is validated for STD paper but not for T U paper. A modification of this model for T U paper is suggested to improve the correlation with experimental data. In the second part, a study is presented on the investigation of the effect of a nitrogen-based additive (DICY) concentration on the paper ageing in oil. The DPv results confirm the protective effect of the DICY on the cellulose chains and show that this effect depends on the nitrogen content, but not linearly. The pH of aqueous extracts and surface FTIR analysis brought new support for a hypothesis regarding the functioning mechanisms of the DICY that are reported in the literature.","PeriodicalId":286019,"journal":{"name":"2020 IEEE Electrical Insulation Conference (EIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel investigations on ageing behaviour of thermally upgraded papers for power transformers\",\"authors\":\"B. Axelle, Mortha Gérard, Marlin Nathalie, Boiron Lucie, Ramousse Agnès, Brun Huguette\",\"doi\":\"10.1109/eic47619.2020.9158663\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, two studies are presented whose main objective is to go further on the comprehension of thermally upgraded paper ageing. The first one is about the accelerated ageing of standard (STD) and thermally upgraded (TU) Kraft paper in mineral oil. After plotting the viscometric degree of polymerization (DPv) according to the kinetic model proposed by Calvini in 2005 [1], the model is validated for STD paper but not for T U paper. A modification of this model for T U paper is suggested to improve the correlation with experimental data. In the second part, a study is presented on the investigation of the effect of a nitrogen-based additive (DICY) concentration on the paper ageing in oil. The DPv results confirm the protective effect of the DICY on the cellulose chains and show that this effect depends on the nitrogen content, but not linearly. The pH of aqueous extracts and surface FTIR analysis brought new support for a hypothesis regarding the functioning mechanisms of the DICY that are reported in the literature.\",\"PeriodicalId\":286019,\"journal\":{\"name\":\"2020 IEEE Electrical Insulation Conference (EIC)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 IEEE Electrical Insulation Conference (EIC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/eic47619.2020.9158663\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Electrical Insulation Conference (EIC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/eic47619.2020.9158663","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在本文中，提出了两项研究，其主要目的是进一步了解热升级纸老化。第一个是关于标准(STD)和热升级(TU)牛皮纸在矿物油中的加速老化。根据Calvini(2005)[1]提出的动力学模型绘制聚合度(viscomical degree of polymerization, DPv)后，该模型对STD纸进行了验证，但未对T U纸进行验证。本文建议对该模型进行修正，以提高与实验数据的相关性。第二部分研究了氮基添加剂(DICY)浓度对纸张在油液中老化的影响。DPv结果证实了DICY对纤维素链的保护作用，并表明这种作用与氮含量有关，但不是线性的。水提取物的pH值和表面FTIR分析为文献中报道的关于DICY功能机制的假设提供了新的支持。
Novel investigations on ageing behaviour of thermally upgraded papers for power transformers
In this paper, two studies are presented whose main objective is to go further on the comprehension of thermally upgraded paper ageing. The first one is about the accelerated ageing of standard (STD) and thermally upgraded (TU) Kraft paper in mineral oil. After plotting the viscometric degree of polymerization (DPv) according to the kinetic model proposed by Calvini in 2005 [1], the model is validated for STD paper but not for T U paper. A modification of this model for T U paper is suggested to improve the correlation with experimental data. In the second part, a study is presented on the investigation of the effect of a nitrogen-based additive (DICY) concentration on the paper ageing in oil. The DPv results confirm the protective effect of the DICY on the cellulose chains and show that this effect depends on the nitrogen content, but not linearly. The pH of aqueous extracts and surface FTIR analysis brought new support for a hypothesis regarding the functioning mechanisms of the DICY that are reported in the literature.
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