[1]夏涛,余海涛,张亚超,等.基于小波变换的波浪发电输电电缆绝缘监测[J].东南大学学报(自然科学版),2019,49(2):267-273.[doi:10.3969/j.issn.1001-0505.2019.02.010]
 Xia Tao,Yu Haitao,Zhang Yachao,et al.Insulation monitoring of power cable in ocean wave energy conversion based on wavelet transform[J].Journal of Southeast University (Natural Science Edition),2019,49(2):267-273.[doi:10.3969/j.issn.1001-0505.2019.02.010]
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基于小波变换的波浪发电输电电缆绝缘监测()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第2期
页码:
267-273
栏目:
电气工程
出版日期:
2019-03-20

文章信息/Info

Title:
Insulation monitoring of power cable in ocean wave energy conversion based on wavelet transform
作者:
夏涛1余海涛1张亚超2汪旭东3
1东南大学电气工程学院, 南京 210096; 2北京航天控制仪器研究所, 北京 100854; 3河南理工大学电气工程与自动化学院, 焦作 454000
Author(s):
Xia Tao1 Yu Haitao1 Zhang Yachao2 Wang Xudong3
1School of Electrical Engineering, Southeast University, Nanjing 210096, China
2Beijing Institute of Aerospace Control Devices, Beijing 100854, China
3School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
关键词:
波浪发电 电力电缆 局部放电 小波变换
Keywords:
wave power generation power cable partial discharge wavelet transform
分类号:
TM247.1
DOI:
10.3969/j.issn.1001-0505.2019.02.010
摘要:
针对波浪发电孤岛供电系统中电力电缆在海洋环境下容易出现绝缘故障问题,为实现其绝缘状态的实时监测,采用基于局部放电信号的绝缘监测算法,建立电缆和局部放电信号的数学和仿真模型.通过小波变换和Sqtwolog阈值策略完成局部放电信号的去噪重构,最后提取其特征量对输电电缆绝缘状态进行在线监测.高压现场实验数据表明,3种不同电缆绝缘破坏程度的局部放电量分别为16.7,34.2和46.5 pC,放电量增长趋势与实验情况相符,从而验证了此绝缘监测算法的实用性和可行性.
Abstract:
The power cable in the wave power generation of an island power supply system is prone to have insulation faults in the marine environment. To realize real-time monitoring of its insulation state, a partial discharge method was used to monitor the cable, and the mathematical models of the cable and partial discharge wave were established. The wavelet transform and the Sqtwolog threshold strategy were used to denoise and reconstruct the partial discharge signals. And the cable insulation state was achieved by extracting signal features. Finally, the high-voltage experiments with three different insulation failures were conducted in practical situation. The experimental results show that the partial discharges are 16.7, 34.2 and 46.5 pC, respectively. The discharge trend is consistent with the experimental conditions. Thus, it verifies the reliability and the effectiveness of the insulation monitoring method.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2018-09-04.
作者简介: 夏涛(1990—),男,博士生; 余海涛(联系人),男,博士,教授,博士生导师,hty@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(41576096)、中央高校基本科研业务费专项资金和江苏省研究生科研与实践创新计划资助项目(KYCX17_0083).
引用本文: 夏涛,余海涛, 张亚超,等.基于小波变换的波浪发电输电电缆绝缘监测[J].东南大学学报(自然科学版),2019,49(2):267-273. DOI:10.3969/j.issn.1001-0505.2019.02.010.
更新日期/Last Update: 2019-03-20