|本期目录/Table of Contents|

[1]林智勇,蔡金锭.运用混联等效电路诊断变压器油纸绝缘状态[J].电机与控制学报,2016,20(03):1-5.[doi:10. 15938 / j. emc. 2016. 03. 001]
 LIN Zhi-yong,CAI Jin-ding.Diagnosing transformer oil-paper insulation by hybrid equivalent circuit[J].,2016,20(03):1-5.[doi:10. 15938 / j. emc. 2016. 03. 001]
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
20
期数:
2016年03
页码:
1-5
栏目:
出版日期:
2015-12-11

文章信息/Info

Title:
Diagnosing transformer oil-paper insulation by hybrid equivalent circuit
作者:
 林智勇 蔡金锭
 ( 福州大学 电气工程与自动化学院,福建 福州 350108)
Author(s):
 LIN Zhi-yong CAI Jin-ding
 ( College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)
关键词:
 油纸绝缘 混联等效电路 变压器 回复电压
Keywords:
 oil-paper insulation a hybrid equivalent circuit transformer return voltage
分类号:
TM 411
DOI:
10. 15938 / j. emc. 2016. 03. 001
文献标志码:
A
摘要:
针对油纸绝缘变压器内部绝缘介质弛豫响应的复杂性,根据油纸绝缘结构特征,提出建立 混联等效电路新模型来表征油纸绝缘弛豫过程。根据混联等效电路的理论分析,推导出混联等效 电路参数和回复电压的求解公式。先采用一台变压器回复电压测试数据对该方法进行验证后,再利用一台变压器检修前后的测试数据进行基于混联等效电路的变压器油纸绝缘诊断研究。研究结 果表明: 通过混联等效电路方法得到的回复电压曲线能够很好的与现场测量的回复电压曲线吻合, 且利用混联等效电路能够准确的诊断油纸绝缘变压器的绝缘介质老化情况。
Abstract:
 Aiming at the complexity of dielectric relaxation response of transformer oil-paper insulation,a hybrid equivalent circuit new model was established to characterize the relaxation process of oil-paper insu-lation system according to the characteristics of oil-paper insulation. According to theory analysis of hybrid equivalent circuit,formula of the hybrid equivalent circuit parameters and the recovery voltage were de-duced. Test data of a transformer recovery voltage was adopted to verify the method,and then the test data of a transformer before and after being maintained was used to diagnose transformer oil-paper insulation sys-tem based on hybrid equivalent circuit. The results show that: the return voltage curve which is gained by the hybrid equivalent circuit method inosculates very well with those gained by the field measurements,and the hybrid equivalent circuit can diagnose aging of transformer oil-paper insulation dielectric accurately.

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备注/Memo

备注/Memo:
收稿日期: 2014 - 07 - 14

基金项目: 国家自然科学基金( 61174117)

作者简介: 林智勇( 1989) ,男,博士研究生,研究方向为电气设备绝缘监测与故障诊断; 蔡金锭( 1954) ,男,博士,教授,博士生导师,研究方向为人工智能技术在电力工程中的应用研究。

更新日期/Last Update: 2016-06-23