Substation Fault Analysis System And Its New Method Of Fault Identification

With the plan of 2.0 start smart grid, and the "second Five-Year" plan on building a strong smart grid requirements, high-performance microprocessor-based protection devices, precision fault recorder, electronic transformer and other automated devices in the network application The increasingly wide range of equipment to the secondary side of the grid showing the size and intelligent features.To take full use of these large data records and to meet the requirements of the smart grid,it is very necessary to design a platform - based on information recorded wave and protection of substation accident analysis system. The system can involve the safe operation of power fault recorder information, information on protective actions in the substation to the screening and processing, analysis, accident occurred at a time, location, fault type, the judge, etc., and the formation of fault presentation. Strive to simplify the upload schedule information, clarity, clear, reducing the dispatch center side of the pressure. But also to facilitate the operation quickly and accurately to deal with the accident.However, the existing Accident Analysis System of Substation integration of the two types of information is not sufficient analysis is limited, especially for the function of the transformer accident analysis. To these problems, we design a wave and protection of recorded information based on integration of the accident analysis system substation, and on this platform for further improvement of visualization of the transformer accident analysis subsystem. The system can be involved in the protection of the safe operation of the transformer and the transformer fault recorder information recorded fault data in two separate fusion of selected important recorded data, the integrated treatment of useful information; and the identification of a new method of magnetizing inrush current (C-SVC exciting inrush detection), the statistical method based on the theory, the absorption of the transformer inrush current method of identifying a variety of advantages, accident analysis to improve the accuracy of the transformer. In the accident to make rapid and accurate judgments at the same time, the formation of fault presentation. The key information and upload to simplify the control center. Dispatch center to develop from the perspective of the whole network scheduling scheme, in order to avoid local failure of the whole network.