Research on Single-phase Replacement of 500 kV Transformer based on PSCAD

摘要

In order to reduce outage time of the transformer after the single-phase fault, the fault phase is considered by using the spare device with similar parameters. However, the use of single-phase transformers with similar parameters to replace can lead some problems of operation because of the different parameters of the transformer. In this paper, the steady and transient problems encountered in the operation of single-phase replacement of transformer are studied based on PSCAD, and the feasibility of single-phase transformer replacement is discussed.