• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electric Power Components and Systems >The Effects of Insulating Oil Replacement Upon Power Transformer Condition Assessment
【24h】

The Effects of Insulating Oil Replacement Upon Power Transformer Condition Assessment

机译：绝缘油置换对电力变压器状态评估的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Insulating oil replacement is one of the most commonly used measures to solve oil deterioration in field transformers. However, the effects of oil replacement upon transformer condition assessment are still unknown. This article presents a simulated oil replacement in the process of an accelerated thermal aging test. The accelerated thermal aging experiment was conducted at 130℃ for 80 days; insulating oil was replaced on the 25th day of aging. Several common condition assessment methods, including degree of polymerization of the paper, oil acidity, dielectric strength of the oil-paper insulation, moisture estimation, and furfural analysis, were compared before and after oil replacement. Results showed that oil replacement is effective in solving the degradation of insulating oil but not in restraining the aging of paper. The variation of dielectric strength of insulation paper caused by oil replacement could be neglected. Moisture estimation of insulation paper was closely related to the aging degree of oil-paper insulation but not obviously influenced by oil replacement. Furfural analysis would be seriously affected by oil replacement because furfural in oil was eliminated during the oil-drainage process, so the effect of oil replacement should be corrected when estimating transformer aging condition with furfural analysis method.
机译：绝缘油的更换是解决现场变压器油质恶化的最常用措施之一。但是，换油对变压器状态评估的影响仍然未知。本文介绍了在加速热老化测试过程中模拟的机油替代品。加速热老化实验在130℃下进行80天。老化的第25天更换绝缘油。在更换机油之前和之后，比较了几种常见的状态评估方法，包括纸的聚合度，油酸度，油纸绝缘材料的绝缘强度，湿度估计和糠醛分析。结果表明，换油可有效解决绝缘油的降解问题，但不能抑制纸张的老化。可以忽略因换油引起的绝缘纸介电强度的变化。绝缘纸的水分估算与油纸绝缘的老化程度密切相关，但不受换油的影响。由于在排油过程中会消除油中的糠醛，因此糠醛分析会严重影响换油，因此在使用糠醛分析方法估算变压器的老化条件时，应纠正换油的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号