The Application Research Of The On-line Monitoring For Transformer Oil Dissolved Gases In Shuangshan Substation

The operation reliability of the power transformer as the key equipment in electrical power systems, influences operation security of electrical power systems directly. The components and contents of gases dissolved in transformer oil can be used to reflects internal insulation faults of operating transformer. On the base of investigation the status in quo of the on-line monitoring technology of gases dissolved in transformer oil at home and abroad, and analysis of the elements that can affect the generally experimental results of dissolved gases and the diagnoses technology, this paper presents the principle and solution of on-line monitoring system with eigenvalue of gases dissolved in oil. The researches are shown mainly as follows:(1) The actuality and significance of on-line detecting and fault diagnosis technology of gases dissolved in oil are analysed, and the relationship between ordinary faults inside transformer and gases dissolved in transformer oil are studied too. The components and contents of gases dissolved in transformer oil can be used to reflects internal insulation faults of operating transformer.(2) On-line extracting gases technology using macromolecule osmotic membrane is studied. The paper introduces the principle of information fusion technology of multi-sensors. Author brings forward the scheme of on-line monitoring system.(3) The principles of on-line monitoring technology of gases dissolved in transformer oil is analyzed, and the paper presents the on-line monitoring method which can detect six gases dissolved in oil, and is charactered with infiltrative film and multi-sensors.(4) The paper concrete application analysis six gases monitoring system in Shungshan substation.: the system runs stably, and has the function of on-line monitoring and discovers the latent fault effectively and can become the warrant of condition service.