A fault diagnosis system and method based on power grid operation steady-state monitoring information

Abstract

The invention discloses a power grid operating steady state monitoring information-based fault diagnosis system and method. The system includes a data interface module, a data receiving preprocessing module, an equipment status on-line monitoring module, a signal analysis integration module, a fault logistic diagnosis module and a fault alarm control module; and the above six modules, based on functional division and mutual coordination, jointly complete power grid on-line fault diagnosis. According to the diagnosis method, power grid operating steady state monitoring information is obtained from a power grid regulation and control center monitoring system; the information is initially checked according to preset filtering rules, and the information is processed so as to form equipment fault analysis data information; and based on primary equipment measurement sampling, abrupt change and topological structure change, fault on-line diagnosis can be realized through adopting a local network topology analysis method and a logic-based fault diagnosis method. The diagnosis system provided by the invention has the advantages of high real-time performance and comprehensive diagnosis range. The diagnosis method is simple and flexible, and has high practicability and adaptability.

Description

technical field [0001] The invention relates to fault diagnosis, in particular to a fault diagnosis system and method based on grid operation steady-state monitoring information, belonging to the technical field of grid fault diagnosis. Background technique [0002] In the existing various power grid fault diagnosis systems and methods, most of them still use simulated fault data files or manually export offline data files from the power grid energy management system for a period of time before and after the fault to provide basic analysis data for the power grid fault diagnosis system , to carry out fault diagnosis in offline mode. This method cannot effectively obtain all kinds of real-time data before and after the power grid fault required by the fault diagnosis system, so it cannot meet the real-time requirements of fault diagnosis. In addition, although various methods have a high theoretical basis, due to the excessive internal assumptions involved and the ideal test ...

AI Technical Summary

Problems solved by technology

[0002] In the existing various power grid fault diagnosis systems and methods, most of them still use simulated fault data files or manually export offline data files from the power grid energy management system for a period of time before and after the fault to provide basic analysis data for the power grid fault diagnosis system , to carry out fault diagnosis in offline mode. This method cannot effectively obtain all kinds of real-time data before and after the power grid fault required by the fault diagnosis system, so it cannot meet the real-time requirements of fault diagnosis.

In addition, although various methods have a high theoretical basis, due to the excessive internal assumptions involved and the ideal test and operating environment, it is difficult to guarantee the fault tolerance and adaptability of the algorithm, so most of them still remain in theoretical research. stage, unable to meet the practical requirements of fault diagnosis

Due to the above deficiencies in the existing power grid fault diagnosis systems and methods, it is impossible to use these systems and methods in the actual power grid control center monitoring system for online fault diagnosis of the power grid

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