文章摘要
黄新波,周岩.干式空心电抗器匝间短路故障在线监测技术[J].电力系统自动化. DOI: 10.7500/AEPS20180113001.
HUANG Xin Bo,ZHOU YAN.On-line Measuring Technology of Inter-turn Short Circuit Fault of Dry Air Core Reactor[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180113001.
干式空心电抗器匝间短路故障在线监测技术
On-line Measuring Technology of Inter-turn Short Circuit Fault of Dry Air Core Reactor
DOI:10.7500/AEPS20180113001
关键词: 干式空心电抗器  功角  匝间短路故障  在线监测技术  基波相位分离法
KeyWords: Dry air core reactor  power angle  inter-turn circuit fault  on-line monitoring technology  fundamental harmonic separation algorithm  
上网日期:2018-11-07
基金项目:陕西省重点科技创新团队计划(2014KCT-16);陕西省重点研发计划(2018ZDXM-GY-040);陕西省教育厅专项科研计划项目(17JK0322)。
作者单位E-mail
黄新波 西安工程大学电子信息学院 huangxb1975@163.com 
周岩 西安工程大学电子信息学院 651092919@qq.com 
摘要:
      本文首先分析了干式空心电抗器匝间短路故障模型,在此基础上提出一种基于功角变化的电抗器匝间绝缘故障在线监测方法,功角测量的精度是实现该方法的关键要素。通过比较快速傅里叶变换法、汉宁窗插值快速傅里叶变换法和汉宁窗插值改进基波相位分离法的误差,分析了频率波动和谐波干扰对功角测量的影响。此外,本文设计了一种由监测装置、干式空心电抗器智能电子设备(IED)和专家软件组成的电抗器匝间绝缘故障在线监测系统。实验结果表明,汉宁窗插值改进基波相位分离法优于快速傅里叶变换法和汉宁窗插值快速傅里叶变换法,且该监测系统可有效地检测出干式空心电抗器匝间短路故障。
Abstract:
      The fault model of the inter-turn short circuit of the dry air core reactor is firstly analyzed in this paper, by which an on-line monitoring method of the reactor inter-turn insulation fault based on the change of the power angle is proposed. The accuracy of power angle measurement is vital for diagnosing the reactor inter-turn insulation fault. The influence of the frequency fluctuation and harmonic interference on measuring power angle is analyzed by comparing the errors of FFT, Hanning windowed interpolation FFT and Fundamental Harmonic Separation Algorithm improved by Hanning windowed interpolation. An on-line monitoring system of the reactor inter-turn insulation fault is also designed in this paper, which consists of the monitoring device, the intelligent electronic device (IED) of dry air core reactor and the expert software. The experiment results show that the Fundamental Harmonic Separation Algorithm improved by Hanning windowed interpolation is superior to FFT and Hanning windowed interpolation FFT, and the inter-turn short circuit of the dry air core reactor can be detected precisely by the on-line monitoring system.
查看全文   查看/发表评论  下载PDF阅读器