2.The paper analyses the influence on the analysis of transformeroil chromatogram induced by different sampling oil spot when conventional analysis of transformeroil chromatogram or on-line analysis of transformeroil chromatogram.
7.This paper introduces the development process and new trends of transformeroil chromatographic analysis technique at home and abroad in terms of the gas circuit system of chromatograph, degassing approach, data processing, diagnostic technique of transformer faults as well as the development and application of chromatograph on-line monitor, etc.
8.An abnormal increase of transformeroil dielectric loss in service and its cause were introduced, and the treatment process to make the dielectric loss to reach standard was summarized, based on the experience of operation and overhaul.
9.An experiment unit for high-temperature and high-velocity erosion corrosion was designed and constructed. The erosion experiment was conducted on this unit of Cr5Mo Steel in transformeroil with an acid value of 8.3 mgKOH/g at conditions of 230～248 oC and flow velocity of 47 m/s.
10.During adjustment and trial operation in Lingao Nuclear Power Station the main and auxiliary transformers have some problems, including the abnormal action of gas relay, total hydrocarbon of the transformeroil and acetylene contents exceeding the standards, crack of O-shape seal ring for load-tap.
