光纤传感技术在油浸式电力变压器状态监测应用的研究进展

Research Progress of Fiber-optic Sensing Technology in Condition Monitoring and Application in Oil-immersed Power Transformer

变压器的正常运行对电力系统的稳定至关重要。因此,对变压器进行实时状态监测并基于其进行故障分析具有重要意义。光纤传感因其灵敏度高、抗电磁干扰、耐高温等优势广泛应用于变压器监测中。文中首先介绍了光纤光栅传感、分布式光纤传感及荧光光纤传感等技术的原理和特点。详细分析了光纤传感技术在油浸式电力变压器温升、振动、局部放电和油中溶解气体4种状态监测的原理和研究进展。最后对其后续研究方向进行了展望。

The normal operation of transformer is crucial to the stability of power system.Therefore,it is of great significance to perform real-time monitoring and,on this basis,fault analysis of transformer.Optical fiber sensing is used widely in transformer monitoring due to its such advantages as high sensitivity,anti-electromagnetic interference and high temperature resistance.In this paper,the principles and characteristics of fiber grating sensing,distributed fiber sensing and fluorescent fiber sensing technologies are introduced.The principle and research progress of fiber-optic sensing technology of such four condition monitoring as temperature rise,vibration,partial discharge and dissolved gas-in-oil analysis of oil-immersed power transformer are analyzed in detail.Finally,its subsequent research development is summarized and prospected.