Automatic monitoring method of transformer secondary circuit for UHV transmission metering

To ensure the smooth operation of transmission metering equipment, this paper proposes an automatic monitoring method of the transformer secondary circuit for UHV transmission metering. According to the attributes of the secondary circuit data of the transformer, the data are divided into three categories: steady-state data, transient data and state data. The basic fault types can be quickly judged according to the attributes of the data, and the preprocessing results can be obtained. Furthermore, the secondary circuit structure of the transformer for UHV transmission metering is constructed. On this basis, the equivalent circuit of the secondary circuit of the transformer is analyzed, and the automatic monitoring of the secondary circuit is realized. The experimental results show that the research method has high sensitivity and excellent performance in error control, which meets the predetermined requirements.