Abstract
With the gradual increase of power system load, higher requirements are put forward for the safe and stable operation of power system. Hollow reactor is an inductive device used to limit short circuit current and filter harmonic in power system. It is an important part to maintain the stability of power system. Therefore, it is of great significance to monitor the working state of the hollow reactor in real time. The main fault type of the hollow reactor is inter-turn short circuit, and the inter-turn short circuit will change the coil current and further change the surrounding magnetic field distribution. Therefore, the fault can be detected by the magnetic field distribution around the hollow reactor. In this paper, the calculation model of inter-turn short circuit current and the analysis model of magnetic field distribution of hollow reactor are established, and the magnetic field variation caused by inter-turn short-circuit is calculated by simulation analysis, which lays a foundation for the research of magnetic field detection system.
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