变压器油色谱在线监测装置运行故障分析

Operation Fault Analysis of Transformer Oil Chromatography On-line Monitoring Device

为研究变压器油色谱在线监测装置运行过程中出现故障的原因,结合某特高压变电站变压器油色谱在线监测装置在变压器油乙炔超标时未检出乙炔的情况,通过现场检查、试验检测等方式,判断气相色谱原理在线监测装置的故障原因为检测器问题、光声光谱原理在线监测装置的故障原因为乙炔传感器通信问题。通过试验还原验证了两种原理在线监测装置出现的故障现象,并建议后期通过优化制造工艺,为在线监测装置添加自检功能并完善故障告警清单。当在线监测装置出现异常情况时能及时响应,提醒运维人员对装置进行维护。

In order to study the causes of malfunction of the transformer oil chromatography online monitoring device during operation,the on-line monitoring device in a UHV substation was analyzed.In this case,the transformer oil acetylene exceeded the standard,but acetylene was undetected.And then on-site inspection,test detection and other ways were adopted to confirm that the failure cause of monitoring devices using gas chromatography principle was the detector problem,and the malfunction of the photoacoustic spectroscopy principle device was caused by the acetylene sensor communication problem.The fault phenomena of two kinds of principle on-line monitoring devices are verified by experiments.It is suggested that the manufacturing process should be optimized in the later stage,the self-check function should be added to the online monitoring device,and the fault alarm list should be improved aslo.When abnormal situation exists,the online monitoring device can respond timely and remind operation and maintenance personnel to maintain the device.