Discussions on Chromatographic Method in Transformer Fault Diagnosis

Gas chromatographic data is obtained by chromatographic analyzing technique on transformer oil. By analyzing changes of this data the running fault of the transformer can be diagnosed. The common methods by chromatographic analyzing technique on transformer fault diagnosis are demonstrated. The advantages and disadvantages of each method are discussed. The factors affecting analyzing error by chromatographic analyzing technique on transformer fault diagnosis are analyzed, which produced good foundation for correctly choosing chromatographic analyzing method and controlling analyzing errors.