Evaluation Study of Aging Condition of Oil-paper Insulation Based on Dielectric Modulus Measurement

LIANG Yu; XIE Jiacheng; XING Feng; CHEN Xiaolin; HU Yizhuo; LI Yuan; DONG Ming

doi:10.13296/j.1001-1609.hva.2019.01.018

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Evaluation Study of Aging Condition of Oil-paper Insulation Based on Dielectric Modulus Measurement

更新时间：2025-04-26

- Evaluation Study of Aging Condition of Oil-paper Insulation Based on Dielectric Modulus Measurement
- High VoltageApparatus Vol. 55, Issue 1, Pages: 114-119(2019)
- 作者机构：
  
  1. 海南电网有限责任公司电力科学研究院
  2. 西安交通大学电力设备电气绝缘国家重点实验室
  3. 海南电网有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.01.018
  CLC： TM855
- Published：2019
- 稿件说明：
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[1]梁钰,谢佳成,邢锋,陈晓琳,胡一卓,李元,董明.基于介电模量检测的油纸绝缘老化评估方法研究[J].高压电器,2019,55(01):114-119.

LIANG Yu, XIE Jiacheng, XING Feng, et al. Evaluation Study of Aging Condition of Oil-paper Insulation Based on Dielectric Modulus Measurement[J]. High voltageapparatus, 2019, 55(1): 114-119.
[1]梁钰,谢佳成,邢锋,陈晓琳,胡一卓,李元,董明.基于介电模量检测的油纸绝缘老化评估方法研究[J].高压电器,2019,55(01):114-119. DOI： 10.13296/j.1001-1609.hva.2019.01.018.

LIANG Yu, XIE Jiacheng, XING Feng, et al. Evaluation Study of Aging Condition of Oil-paper Insulation Based on Dielectric Modulus Measurement[J]. High voltageapparatus, 2019, 55(1): 114-119. DOI： 10.13296/j.1001-1609.hva.2019.01.018.

摘要

老化是影响油纸绝缘设备绝缘强度的重要原因之一。在试验和理论分析的基础上

文中将一个新的参量——介电模量引入油纸绝缘老化状态评估

并针对不同老化程度油浸纸板试样开展宽频范围内介电模量谱测量;与频域介电谱相比较

介电模量对于油纸绝缘系统绝缘结构老化/劣化的微观机理的表征具有新的特征

其介电模量谱在低频范围内出现了明显的弛豫峰

并深入分析了水分含量与弛豫峰的相应关系及产生原因。为消除现场测量中现场环境温度可能引起的影响

通过试验和拟合表明温度对介电模量的影响规律符合Arrhenius方程

可通过计算予以校正。通过文中的研究结论

介电模量可以作为现场评估油纸绝缘系统老化程度的有效方法。

Abstract

Aging has a profound influence on device’s insulating condition. Based on theoretical analysis and experi-ment

a new kind of parameter—dielectric modulus is introduced to evaluate oil-paper system’s insulating conditionin this thesis. The dielectric modulus spectrum of oil-immersed paper samples are obtained under different aging de-gree. Compared with conventional parameter dielectric constant

dielectric modulus shows its unique features incharacterizing dielectric sample’s internal insulation defect

an observable relaxation peak appears in low-frequencyarea of dielectric modulus spectrum. Relation between oil-paper samples’ aging condition and relaxation peaks isconcluded as well. Temperature’s influence on the test process is also studied and the regularity is according with Ar-rhenius function by fitting results. Through the work in this thesis

dielectric modulus can be treated as a useful tool and a new method to analyze oil-paper insulation system’s aging degree.

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