CPC G01R 31/62 (2020.01) [G01R 19/0092 (2013.01)] | 4 Claims |
1. A method for analyzing a correlation between rail transit and direct current (DC) magnetic bias of a transformer, comprising the following steps:
A: obtaining a current of a feed cable and a DC magnetic bias current: measuring the current of the feed cable in rail transit and the DC magnetic bias current of a transformer in a power grid within a certain period by a monitoring apparatus;
B: calculating a characteristic quantity of the feed current within the measurement period based on the obtained current of the feed cable in step A;
C: calculating a characteristic quantity of the DC magnetic bias current within the measurement period based on the DC magnetic bias current obtained in step A; and
D: calculating a support degree and a confidence coefficient based on the calculated characteristic quantity of the feed current in step B and the calculated characteristic quantity of the DC magnetic bias current in step C, and generating a correlation rule.
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