Theoretical modeling and fault diagnosis of pantograph-catenary arc under high-speed airflow.

ABSTRACT: In traditional pantograph-catenary arc mathematical models, the relationship function between high-speed airflow and the voltage gradient contains certain inaccuracies. Furthermore, fault identification based on voltage or current often involves complex feature extraction and algorithmic processes. To address these issues, this paper introduces a new mathematical model and presents the concept of port impedance. First, based on the Habedank model, this paper combines the offline distance and airflow velocity fitting function with the existing relationship function between voltage gradient and arc current, deriving a mathematical arc model with airflow velocity and arc current as the primary influencing factors. Next, the correctness of this arc model is validated through simulations and ex

SUBMITTER: Li B 

PROVIDER: S-EPMC11914616 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature