Fault vector analysis and fault diagnosis method based on mapping of instation main wiring diagram

Abstract

The invention discloses a fault vector analysis and fault diagnosis method based on mapping of an instation main wiring diagram. Modeling is carried out according to an IEC61970, and therefore characteristic quantity information can be extracted in a unified mode for setting up all instation CTs, wherein the characteristic quantity information includes model information such as corresponding installation positions and transformation ratios; meanwhile, the CTs correspond to instation fault recorder channels, specific physical quantities such as flow directions and magnitudes of currents corresponding to instation equipment are mapped to a visual current vector diagram interface based on nodes and branch circuits through an intermediate quantity, namely, CT modeling, a fault current flow direction diagram based on various sequence networks can be obtained through a filtering algorithm, accordingly a series of analyses of quick locking of the current flow directions, fault location and fault nature judgment after faults can be achieved and a visual and effective analysis platform is provided.

Description

technical field [0001] The invention relates to the field of power grid fault vector analysis and fault diagnosis, in particular to a fault vector analysis and fault diagnosis method based on the mapping of main wiring diagrams in a station. Background technique [0002] With the continuous expansion of the scale of the power grid and the continuous strengthening of the power grid connection, the probability of the expansion of the scope of the power grid failure and local faults continues to increase. When the power grid fails, the relevant fault recording information can be uploaded to the dispatch center in time. [0003] However, the fault data of each interval cannot be displayed uniformly and intuitively on the station map. With the existing power fault vector analysis and fault diagnosis modules, it is difficult for the dispatcher to accurately identify and quickly locate the fault by calculating the fault current vector sum of the relevant area at the time of the fau...

AI Technical Summary

Problems solved by technology

[0003] However, the fault data of each interval cannot be displayed uniformly and intuitively on the station map. With the existing power fault vector analysis and fault diagnosis module, it is difficult for the dispatcher to accurately identify and quickly locate the fault by calculating the fault current vector sum of the relevant area at the time of the fault.

Images