浙江电力

2022, v.41;No.310(02) 53-59

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振动分析法在变压器故障诊断及隐患治理中的应用
Application of Vibration Analysis in Transformer Fault Diagnosis and Hidden Peril Management

蔡文方,聂玲,应光耀,马思聪,李卫军,王在华
CAI Wenfang,NIE Lin,YING Guangyao,MA Sicong,LI Weijun,WANG Zaihua

摘要(Abstract):

在分析变压器故障常规检测方法优缺点的基础上,提出了一种介绍了基于振动分析法的变压器故障诊断技术和隐患治理流程。通过振动频谱分析了某特高压电抗器乙炔含量微增的原因,以幅值趋势分布为依据,拟合分析并定位了故障源;通过现场模态测试获取结构件的固有频率,实现对某换流站主变冷却器结构共振故障的诊断与精准治理;通过振动监测,分析了±800 kV复奉直流系统投运及单、双极运行时对周边变压器的影响,为设备的安全稳定运行提供数据支撑。基于振动分析法的变压器故障诊断及隐患治理可实现变压器早期故障诊断,消除电网扰动对设备的损害。
The paper proposes a diagnosis technique for transformer faults and a technological process for hidden peril management based on vibration analysis by analyzing pluses and minuses of conventional fault test methods for transformers. Through vibration spectrum,the cause of a slight increase in acetylene content of a UHV reactor is analyzed and the fault source is fitted,analyzed and located based on the amplitude trend distribution;through onsite modal testing,the inherent frequencies of structural components are obtained to diagnose and precisely control structural resonance faults of the main transformer cooler of a converter station;through vibration monitoring,the impact on the surrounding transformers when the ±800 kV Fulong-Fengxian DC system is put into operation and in the case of single and double pole operation is analyzed to provide data support for the safe and stable operation of equipment. The transformer fault diagnosis and hidden peril management of transformer based on vibration analysis enable fault diagnosis in the early stage and rids equipment of damages from grid disturbance.

关键词(KeyWords): 变压器;振动测试;故障诊断;结构共振;局部放电;单极运行;隐患治理
transformer;vibration test;fault diagnosis;structural resonance;partial discharge;unipolar operation;hidden peril management

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作者(Author): 蔡文方,聂玲,应光耀,马思聪,李卫军,王在华
CAI Wenfang,NIE Lin,YING Guangyao,MA Sicong,LI Weijun,WANG Zaihua

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