| 引用本文: | 魏云冰,王东晖,韩立峰,张捷.一种基于MIA的油浸式变压器放电性故障定位新方法[J].电力系统保护与控制,2015,43(21):41-47.[点击复制] |
| WEI Yunbing,WANG Donghui,HAN Lifeng,ZHANG Jie.A novel method for discharging fault diagnosis and location of oil-immersed power transformers based on MIA[J].Power System Protection and Control,2015,43(21):41-47[点击复制] |
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| 摘要: |
| 为解决油浸式电力变压器中低能放电、高能放电等放电性故障的定位问题，提出了基于油中金属分析(Metal In-Oil Analysis, MIA)的放电性故障定位方法。通过对变压器内部高故障概率构件进行表面处理，将潜在的故障信息源预置于构件表面，并应用示位金属(Metal for Position Indication, MPI)进行发生故障构件的确定。在此基础上，结合已有的局部放电、油中溶解气体分析等在线监测系统进行软、硬件的整合，可以实现较为完善的变压器放电性故障的诊断与定位。研究结果表明，该方法在提高放电性故障定位精度的同时，还可以降低对原有某种特定故障定位方法在精度方面的要求，并通过连续监测使运行维护人员对变压器的潜伏性故障信息有更为全面的掌握，为变压器状态检修的实现提供了新的技术支撑。 |
| 关键词: 油浸式电力变压器 故障定位 油中金属分析 示位金属 状态检修 |
| DOI：10.7667/j.issn.1674-3415.2015.21.007 |
| 投稿时间：2015-01-22修订日期：2015-04-23 |
| 基金项目:国家留学基金项目(留金法[2013]5045号) |
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| A novel method for discharging fault diagnosis and location of oil-immersed power transformers based on MIA |
| WEI Yunbing,WANG Donghui,HAN Lifeng,ZHANG Jie |
| (School of Electrical & Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; School of Electrical & Electronic Engineering, University of Manchester, Manchester M13 9PL, UK;School of
Material & Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China) |
| Abstract: |
| To solve the location problems of discharging faults in oil-immersed power transformers, a novel location method based on metal in-oil analysis (MIA) is proposed. By the surface treatment for the internal components of high failure probability in the transformer, the potential failure sources in transformers are preset in the surface of these components and metal for position indication (MPI) is used for fault location. At the same time, through the integration with the existing partial discharge monitoring system and the online dissolved gases monitoring system, a relatively perfect fault diagnosis and location method for discharging faults could be achieved. The results show that the proposed method can increase the accuracy of fault location and lower the requirements in precision of the original certain fault location methods. The operation staff can also master more comprehensive latent fault information and be provided with new technical support for the realization of condition-based maintenance for transformers. |
| Key words: oil-immersed power transformer fault location MIA MPI condition-based maintenance |
