| 基于频域介电谱法的油浸式套管受潮状态评估 |
| |
| 引用本文： | 周利军,刘伟迪,王东阳,潘刚,李会泽,徐肖伟. 基于频域介电谱法的油浸式套管受潮状态评估[J]. 电力自动化设备, 2018, 38(11) |
| |
| 作者姓名： | 周利军 刘伟迪 王东阳 潘刚 李会泽 徐肖伟 |
| |
| 作者单位： | 西南交通大学 电气工程学院，四川 成都610031,西南交通大学 电气工程学院，四川 成都610031,西南交通大学 电气工程学院，四川 成都610031,西南交通大学 电气工程学院，四川 成都610031,西南交通大学 电气工程学院，四川 成都610031,云南电网有限责任公司电力科学研究院，云南 昆明650217 |
| |
| 基金项目： | 国家自然科学基金资助项目(51877183) |
| |
| 摘 要： | 为了定量评估油浸式套管主绝缘受潮状态，建立了考虑直流电导的Cole-Cole双弛豫模型。对实验室制备的不同含水量(0.53%、1.78%、2.97%、3.89%、5.03%)的72.5 kV油浸式套管模型进行测试得到对应的频域介电谱，采用建立的Cole-Cole双弛豫模型对测试结果进行拟合解析，提取表征油浸式套管内绝缘含水量的特征参数，并拟合评估公式。考虑温度对现场测试结果的影响，提出了适用于现场的油浸式套管受潮状态评估方法。案例分析结果证明了所提方法的有效性。
|
| 关 键 词： | 电力变压器；套管；绝缘；频域介电谱；Cole-Cole模型；含水量；定量评估 |
Evaluation of oil-immersed bushing damp state based on frequency-domain dielectric spectroscopy |
| |
| ZHOU Lijun,LIU Weidi,WANG Dongyang,PAN Gang,LI Huize and XU Xiaowei. Evaluation of oil-immersed bushing damp state based on frequency-domain dielectric spectroscopy[J]. Electric Power Automation Equipment, 2018, 38(11) |
| |
| Authors: | ZHOU Lijun LIU Weidi WANG Dongyang PAN Gang LI Huize XU Xiaowei |
| |
| Affiliation: | School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China,School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China and Electric Power Research Institute, Yunnan Power Grid Co.,Ltd.,Kunming 650217, China |
| |
| Abstract: | In order to quantitatively evaluate the damp state of oil-immersed bushing main insulation, the Cole-Cole double relaxation model considering DC conductivity is built. By testing 72.5 kV oil-immersed bushing model with 0.53%,1.78%,2.97%,1.78% and 5.03% moisture contents prepared in the laboratory, the corresponding frequency-domain dielectric spectroscopy is obtained. The frequency-domain dielectric spectroscopy is fitted and parsed by the Cole-Cole double relaxation model, then the characteristic parameters representing the moisture content of oil-immersed bushing insulation are extracted and the assessment formula is fitted. Considering the influence of temperature on the field testing results, the oil-immersed bushing damp state assessment method suitable for the field is proposed. Results of case analysis verify the effectiveness of the proposed method. |
| |
| Keywords: | power transformers bushing insulation frequency-domain dielectric spectroscopy Cole-Cole model moisture content quantitative assessment |
|
| 点击此处可从《电力自动化设备》浏览原始摘要信息 |
|
点击此处可从《电力自动化设备》下载全文 |
|
