Traction transformer abnormal state identification method based on railway dispatching operation plan

Abstract

The invention provides a traction transformer abnormal state identification method based on a railway dispatching operation plan and relates to the technical field of electric power detection. The method comprises the following steps: building a Petri Net description model based on a topological graph of a traction power supply system; based on the railway dispatching operation plan and the PetriNet description model, generating an ideal dynamic time sequence diagram of a certain monitoring node in the line monitoring interval; acquiring actual running state time sequence information of the monitoring nodes in real time, and monitoring and evaluating the line in real time by adopting a dynamic time sequence constraint inspection method; if abnormity is found, starting a defect early warning module, triggering an abnormal state, meanwhile, diagnosing the abnormity, and positioning defects. According to the method, the characteristic that the grid structure current information of trainoperation has a certain time sequence attribute is fully and reasonably utilized, the decoupling of fault event transmission in a section traction power supply system can be achieved, meanwhile, the possibility sorting of hidden danger sources is achieved, and the accurate diagnosis and analysis of faults are facilitated.

Description

technical field [0001] The invention relates to the technical field of electric power detection, and more specifically refers to a method for identifying an abnormal state of a traction transformer based on a railway dispatching operation plan. Background technique [0002] The key equipment of the traction power supply system is the traction transformer. Because the traction load has the characteristics of extreme instability, many short-circuit faults, and large harmonic content, the operating environment is much harsher than that of general power loads, which requires the traction transformer to have a stronger ability to withstand overload and short-circuit impact, which is also the difference between traction transformers and General characteristics of power transformers. The power supply of the traction transformer is called the "blood" of high-speed rail operation. It continuously provides the running power for the high-speed rail locomotive. Once a power supply fail...

AI Technical Summary

Problems solved by technology

Compared with traditional transformers, traction transformer monitoring adopts segmented centralized control management, and the state is greatly affected by the load. It is difficult to locate the abnormal state of multiple traction transformers and realize centralized control of state management.

However, the current monitoring methods for traction transformers are not perfect and accurate enough, and some abnormal state identification methods for traction transformers need to be developed

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