Resistance-capacitance Equivalent Model for Broadband Frequency Dielectric Response of Insulation Paper and Polarization Characteristics Extraction of Fiber

HUANG Meng; NIU Mingkang; Lü Yuzhen; QI Bo

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Resistance-capacitance Equivalent Model for Broadband Frequency Dielectric Response of Insulation Paper and Polarization Characteristics Extraction of Fiber

更新时间：2025-12-08

- Resistance-capacitance Equivalent Model for Broadband Frequency Dielectric Response of Insulation Paper and Polarization Characteristics Extraction of Fiber
- Vol. 47, Issue 2, Pages: 663-670(2021)
- 作者机构：
  
  1. 华北电力大学新能源电力系统国家重点实验室
  2. 国网山东省电力公司济南供电公司
  3. 华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：28 February 2021，
  
  Published：2021
- 稿件说明：
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HUANG Meng, NIU Mingkang, Lü Yuzhen, et al. Resistance-capacitance Equivalent Model for Broadband Frequency Dielectric Response of Insulation Paper and Polarization Characteristics Extraction of Fiber[J]. 2021, 47(2): 663-670.
DOI：

HUANG Meng, NIU Mingkang, Lü Yuzhen, et al. Resistance-capacitance Equivalent Model for Broadband Frequency Dielectric Response of Insulation Paper and Polarization Characteristics Extraction of Fiber[J]. 2021, 47(2): 663-670. DOI：

摘要

纤维的极化特性是决定绝缘纸介电特性的关键因素之一

但是由于缺乏绝缘纸介电响应的计算模型

纤维在绝缘纸极化过程中的定量作用尚不明了

导致纤维的极化特性研究难以开展。为此提出了一种适用于绝缘纸这种复合材料的宽频介电响应阻容等效模型

并通过试验验证了其准确性。然后通过测量纤维素绝缘纸在25～100℃下的频域介电谱和所建立的模型计算出了纤维的介电特性。最后

利用修正Cole-Cole模型分析了纤维的介电频谱。结果表明

纤维的极化过程中存在3个弛豫过程

其中高频区以羟基转向极化为主

对应的活化能为0.176 eV;低频区源于电极极化

与纤维中自由离子的运动有关。该研究可为复合材料介电响应分析和合成绝缘纸改性提供关键参数和理论指导。

Abstract

Polarization characteristics of fiber is one of the key factors determining the dielectric properties of insulating paper

whereas

for lack of models for calculating the dielectric response of insulating paper

the quantitative influence of of fiber on the polarization of insulating paper is still unknown

thus it is difficult to analyze the polarization characteristics of fiber. An equivalent resistance-capacitance model was proposed in this paper to analyze the broadband dielectric response of a composite which is suitable for insulating paper. Its accuracy was verified by experiments. Then

the dielectric properties of fiber were extracted from the tested frequency domain spectroscopy of cellulose insulation paper at 25 to 100 ℃. Finally

the dielectric spectra of the fiber were analyzed with the modified Cole-Cole model. The results show that there are three relaxation processes. The relaxation process in high frequency region is formed by orientation polarization of hydroxyl

with the activation energy of 0.176 eV. And the low frequency relaxation process is from electrode polarization which is related to the movement of free ions in fiber. This research can provide key parameters and theoretical guidance for the dielectric response analysis of composites and the modification of dielectric properties of synthetic insulating paper.

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