基于遗传算法及有限元仿真的变压器热点处纸绝缘老化状态表征方法

doi:10.3969/j.issn.1008-0198.2024.03.006

湖南电力 ›› 2024, Vol. 44 ›› Issue (3): 40-47.doi: 10.3969/j.issn.1008-0198.2024.03.006

• 特约专栏: 输变电设备数字化运检技术 • 上一篇下一篇

基于遗传算法及有限元仿真的变压器热点处纸绝缘老化状态表征方法

陆炳荣¹, 王清印²

1.国能广投北海发电有限公司,广西北海 536017;
2.广西大学电气工程学院,广西南宁 530004

收稿日期:2023-12-27 修回日期:2024-03-17 出版日期:2024-06-25 发布日期:2024-07-10
通信作者: 王清印(1996),男,硕士研究生在读,主要从事高电压与绝缘技术研究工作。
作者简介:陆炳荣(1980),男,高级工程师,火电厂总工程师。
基金资助:
国能广投北海发电有限公司科技项目(BHDC-2023-FW-033)

Characterization Method of Paper Insulation Aging State at Transformer Hot Spots Based on Genetic Algorithm and Finite Element Simulation

LU Bingrong¹, WANG Qingyin²

1. China Energy Investment Corporation Beihai Power Generation Co.,Ltd.,Beihai 536017,China;
2. Electrical Engineering School,Guangxi University,Nanning 530004,China

Received:2023-12-27 Revised:2024-03-17 Online:2024-06-25 Published:2024-07-10

摘要/Abstract

摘要： 现有的基于频域介电谱(frequency domain spectroscopy, FDS)的评估方法无法反映热点处的绝缘老化状态,针对此问题,将多目标遗传算法和有限元仿真方法相结合,提出一种“反演模型”以获取变压器高温区域纸绝缘老化信息。构建非均匀老化下油纸绝缘有限元模型,建立不同老化区域油纸绝缘老化状态和FDS数据之间的映射关系。基于测量的油纸绝缘系统的FDS数据,设计多目标遗传算法求解有限元模型中的参数分布。实验结果表明,所提取的有限元仿真模型参数可以很好地表征热点区域绝缘纸的老化状态,在实验室条件下,模型的相对误差小于7%。

关键词: 频域介电谱, 油纸绝缘, 非均匀老化, 变压器, 有限元仿真

Abstract: :Current assessment method based on frequency domain dielectric spectrum(FDS)cannot reflect the aging state of the insulation at the hot spots. Therefore,an“inverse model”is proposed by combining multi-objective genetic algorithm and finite element simulation method to obtain the aging information of paper insulation in high-temperature areas of transformers.A finite element model of oil-paper insulation under non-uniform aging is constructed,which can establish the mapping relationship between the aging state of oil-paper insulation and FDS data in different aging regions. Based on the measured FDS data of the oil-paper insulation system,a multi-objective genetic algorithm is designed to solve the parameter distribution in the finite element model.The validation experiment results show that the extracted parameters of the FEM simulation model can well characterize the aging state of the paper insulation in the hot spot area and the relative error of the model is less than 7% under laboratory conditions.

Key words: frequency domain spectroscopy, oil-paper insulation, non-uniform aging, transformers, finite element simulation

中图分类号:

TM403.3

陆炳荣, 王清印. 基于遗传算法及有限元仿真的变压器热点处纸绝缘老化状态表征方法[J]. 湖南电力, 2024, 44(3): 40-47.

LU Bingrong, WANG Qingyin. Characterization Method of Paper Insulation Aging State at Transformer Hot Spots Based on Genetic Algorithm and Finite Element Simulation[J]. Hunan Electric Power, 2024, 44(3): 40-47.

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基于遗传算法及有限元仿真的变压器热点处纸绝缘老化状态表征方法

Characterization Method of Paper Insulation Aging State at Transformer Hot Spots Based on Genetic Algorithm and Finite Element Simulation

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