Study on the Time–Frequency Characteristics of Excitation Inrush Current and Its Induced Converter Transformer Vibration
Source abstract
Abstract
An inrush current will be generated inside a converter transformer during no-load switching on or off. The inrush current will cause severe vibration of the winding and other components of the converter transformer. However, the current research on the vibration characteristics caused by the inrush current is insufficient, and the influence of the converter transformer components cannot be effectively evaluated. Therefore, this paper discusses the building of an electromagnetic transient model of no-load closing of a conventional DC converter station, and analyzes the time–frequency characteristics of the inrush current under different working conditions. The finite element model based on the actual converter transformer was built and verified. The vibration characteristics of some converter transformer components under excitation of the inrush current were studied. The research results can monitor the vibration of a converter transformer under different working conditions, and can avoid the damage of converter transformer components caused by an excessive inrush current.
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Research context
OpenAlex topics: Magnetic Properties and Applications · Geoscience and Mining Technology · Electric Power Systems and Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Maintenance and Test Centre, EHV, China Southern Power Grid, Guangzhou 510663, China
School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Funding
China Southern Power Grid Program
References (26)
Show source-provided references
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