500kV变压器异常噪声与振动的原因分析Analysis for Abnormal Noise and Mechanical Vibration of 500kV Transformer
张建平,潘星
摘要(Abstract)：
通过大量的测试、分析及试验,发现了500kV电网的电压暂降、直流偏磁和变压器中性点零序谐波电流等与500kV变压器多次异常声音和振动的关系,对电压暂降引起变压器的异常声音和振动提出了相应的处理办法。对地磁暴等干扰电网运行和引起变压器直流偏磁现象提出了监测建议。
After doing a mass of testing,analyzing and examinations,we thought that abnormal noise and mechanical vibration of high voltage transformer were related to mains disturbance such as voltage dipping,DC magnetic biasing and transformer neutral point harmonic zero_sequence components.The measures releˉvant to against abnormal noise and vibration of transformer which were due to voltage dip were brought forˉward in this paper.Aiming at the phenomena of geomagnetic storm disturbing mains running and bringing to DC magnetic biasing in transformer,we also posed suggestions that carry through long_term monitoring.
关键词(KeyWords)：
变压器;异常噪声;电网扰动
transformer;abnormal noise;mains disturbance
基金项目(Foundation):
作者(Author):
张建平,潘星
DOI: 10.19585/j.zjdl.2006.03.002
参考文献(References)：
- 蒯狄正,万达,邹云.直流偏磁对变压器的影响[J].中国电力,2004(8):41-43.
- 胡似徽,刘骥.地磁暴对电力系统的影响[J].哈尔滨电工学院学报,2006(4):488-492.
- Toms.Molinski,William E.Feero,Ben L.Damsky.Shielding grids from solar storms[J].IEEE Spectrum,2000(11):55-60.
- 刘连光,刘宗歧,张建华.地磁感应电流对我国电网的初步分析[J].中国电力,2004(11):10-14.
- Risto Pirjola.Geomaneticlly induced Currents During Mag-netic Storms[J]:IEEE Transactions on Plasma Science,De-cember2000,28(6):1867-1873.
- 赵杰.高压直流输电的前沿技术[J].中国电力,2005(10):1-6.
- 叶建泗.500kV上河变主要设备运行质量分析[J].华中电力,2003(2):25-28.