| 引用本文: | 李成祥,夏麒,朱天宇,赵仲勇,姚陈果,米彦.基于脉冲频率响应法的变压器绕组变形带电检测仪[J].电力自动化设备,2018,(1): |
| LI Chengxiang,XIA Qi,ZHU Tianyu,ZHAO Zhongyong,YAO Chenguo,MI Yan.Live transformer winding deformation detector based on impulse frequency response method[J].Electric Power Automation Equipment,2018,(1): |
|
| 摘要: |
| 针对目前变压器绕组变形检测设备只能在变压器离线状态下对绕组运行状态进行检测的不足，研制基于脉冲频率响应法的变压器绕组变形便携式带电检测仪。该检测仪以固态Marx电路作为脉冲发生电路，以现场可编程门阵列(FPGA)为控制核心，以AD采集电路为信号采集电路，集高压脉冲信号的产生、脉冲信号及响应信号的采集于一体，并可进一步对频率响应曲线进行快速分析，以期达到现场快速检测的目的。离线试验、电容耦合试验和带电试验结果均表明，所研制的检测仪频率响应曲线谐振点位置与现有离线检测设备频率响应曲线谐振点位置基本一致，可真实、准确地反映绕组状态，且可用于变压器绕组运行状态的带电检测。所研制的检测仪为基于脉冲频率响应法的变压器绕组变形带电检测技术的有效性和可靠性的进一步验证及在电力系统中的推广应用奠定了基础。 |
| 关键词: 变压器 绕组变形 带电检测 固态Marx电路 AD采集电路 FPGA 状态评估 |
| DOI：10.16081/j.issn.1006-6047.2018.01.016 |
| 分类号:TM41 |
| 基金项目:国家自然科学基金资助项目(51377175) |
|
| Live transformer winding deformation detector based on impulse frequency response method |
|
LI Chengxiang1, XIA Qi1,2, ZHU Tianyu1, ZHAO Zhongyong1, YAO Chenguo1, MI Yan1
|
|
1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;2.Sichuan Electric Power Design & Consulting Company, Chengdu 610041, China
|
| Abstract: |
| Aiming at the deficiency that the exiting transformer winding deformation detector can only detect the operating state of transformer winding off line, a portable and live transformer winding deformation detector based on the impulse frequency response method is developed. It adopts the solid-state Marx circuit as the impulse generating circuit, the FPGA(Field-Programmable Gate Array) as the control core and the AD sampling circuit as the signal acquisition circuit. Also it combines the high voltage impulse signal generation with the acquisition of impulse and response signals, and can further analyze the frequency response curve quickly to achieve the purpose of on-site rapid detection. Results of offline test, capacitance coupling test and live test results show that resonance point locations in the frequency response curve of the developed detector basically coincide with those of the existing offline detector, the developed detector can truly and accurately reflect the winding’s operating state of the detector and can be used in live detection of transformer winding’s operating state. The developed detector lays a foundation for further verification of effectiveness and reliability of the live transformer winding deformation detection technique based on the pulse frequency response method and its popularization and application in electric power system. |
| Key words: power transformers winding deformation live detection solid-state Marx circuit AD acquisition circuit FPGA state assessment |
