光声光谱技术与气相色谱技术在变压器在线监测中的分析比较

Analysis and Compare of Photo-Acoustic Spect roscopy Technology and Gas Chromatography Technology in Transformer on-line detecting

光声光谱技术进行变压器油中溶解气体分析是近些年开发的一种新技术。本文结合国内某AP1000核电项目中主变压器、高压厂用变压器及辅助变压器在线监测装置选型情况,介绍了光声光谱技术及传统的气相色谱技术在变压器油中故障气体分析(DGA)的基本原理和产品结构,对最小检知浓度等技术指标进行了对比。最后总结了两种不同技术原理的油中故障气体在线监测设备之间的差异。旨在能为大型变压器在线监测设备选型提供技术参考。

Photo-acoustic Spectroscopy Technology for analyzing the dissolved gases in transformer oil is a new technology developed in recent years. The principle and product structure of acoustic spectroscopy technology and gas chromatography technology to analyze the dissolved gas in oil is introduced in this paper, according to the main transformer, high voltage transformer and auxiliary transformer on-line monitoring device selection for a domestic AP1000 nuclear power project. At the same time, the sensitivity etc. technical indicators are compared. At last, the difference between the two different technologies transformer on-line monitoring devices is concluded. Hope to provide a reference for selecting large transformer on-line monitoring device.