光纤光栅测温技术在电气设备中的应用研究

针对电气设备热故障引起绝缘能力下降并导致击穿,光纤光栅传感器由于耐高温、抗干扰性强、防水、远距离光纤传输等特性得到广泛应用,介绍了其在电力、铁路、桥隧、发电等领域中的一些典型监测方案,基于某牵引变电所的现场试验数据知:传感器测温分辨率0.1℃,误差在±2℃之内,报警灵敏度高,说明该技术具有很高的可靠性和稳定性,对于高压设备关键部位的绝缘监测具有很强的实用性。

The Application Research of Optical Fiber Bragg Grating Temperature Measurement Technology in Electrical Equipment Temperature Monitoring

As electrical equipment insulation decrease and lead to breakdown caused by heat fault, fiber bragg grating sensor has many advantages such as high temperature, strong interference resistance, waterproof, long distance fiber optic transmission, has being applied broadly. Herein, this paper introduces some typical monitoring schemes which has practiced in electric power, railway, bridge and tunnel, power and many other fields. According to the traction substation test data, temperature resolution of 0.1℃, error within ±2℃, high alarm sensitivity. This findings dates suggest that the technology has high reliability and stability, and it is very practical for high voltage equipment key parts of insulation monitoring.