基于PHM的大型变压器的局部放电在线监测研究

Research on Online Partial Discharge Monitoring of Large Transformer Based on PHM

大型变压器的局部放电直接影响了整个电网系统的安全平稳运行,因此,必须对其进行在线监测。本文研究分析了现阶段主流的局部放电监测手段,确定了超声检测法在在线监测中具备的优势,提出了基于PHM的大型变压器的局部放电在线监测系统,划定了基于数据驱动的大型变压器局部放电在线监测流程,实现了大型变压器的在线状态监测、绝缘性能退化建模、绝缘剩余寿命预测分析的目标。

The partial discharge of large transformers directly affects the safe and stable operation of the entire power grid system,therefore,online monitoring is necessary.This paper studies and analyzes the current mainstream means of partial discharge monitoring,determines the advantages of ultrasonic testing method in online monitoring,proposes a PHM based online partial discharge monitoring system for large transformers,delimits a data-driven online partial discharge monitoring process for large transformers,and achieves the goals of online status monitoring,insulation performance degradation modeling,and insulation residual life prediction and analysis of large transformers.