Implementation method of grid fault diagnosis system considering uncertain information

Abstract

The invention belongs to the technical field of electric system intelligent analysis and control, and particularly relates to an implementation method of a grid fault diagnosis system considering uncertain information. The implementation method of the grid fault diagnosis system considering the uncertain information is a grid fault diagnosis system practical method of an information theory and an expert system, is provided on the basis of a power system fault diagnosis method based on the information theory and the expert system, wherein the power system fault diagnosis method based on the information theory and the expert system is provided by a Chinese patent with a publication number of CN101661070A. The movement condition of reclosure and the movement condition of spare power automatic switching are added, and the practical requirement for applying the implementation method of the grid fault diagnosis system considering the uncertain information to an actual power system fault diagnosis system is met. The implementation method of the grid fault diagnosis system considering the uncertain information inherits an original method, and can further use movement information of the reclosure and movement information of the spare power automatic switching to give presentation of the movement condition of reclosure and presentation of the movement condition of the spare power automatic switching. Fault phase difference and fault types are used for reducing the scale of a protection set of possible movement, and complexity of a diagnosis process is reduced. The implementation method of the grid fault diagnosis system considering the uncertain information can serve as reference of a grid fault diagnosis system based on an algorithm of the same class.

Description

technical field [0001] The invention belongs to the technical field of intelligent analysis and control of power systems, and in particular relates to an implementation method of a power grid fault diagnosis system considering uncertain information. Background technique [0002] With the integration of construction and regulation of power grid dispatching centers at all levels, the EMS (Energy management system) energy management system is not only responsible for monitoring the operation status of the power grid, but also receives a large number of abnormalities, accident alarms and control information. The traditional EMS system focuses more on the analysis and calculation of various safety and economic indicators of a certain online operation section of the power grid, without the analysis and processing function of accident alarm information. In addition to maintaining the stability of the power grid, the dispatcher also needs to deal with the accident quickly and accura...

AI Technical Summary

Problems solved by technology

However, the function of the algorithm is not perfect. The original method did not consider the problems that may be encountered in the practical process, such as the problem of slow diagnosis speed caused by the complicated protection and switch actions in the diagnosis process, and can only give information including faulty equipment, protection and switches. Diagnosis results of action descriptions, not including action descriptions of reclosing and standby automatic switching

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