Collected current monitoring device

A collected current monitoring device used for a railway vehicle including a plurality of transformers arranged in parallel and a plurality of current collectors configured to supply a collected current to the plurality of transformers, the collected current monitoring device comprising:

• a transformer current acquisition unit configured to acquire a current value Ip of a current flowing through a part of the plurality of transformers;
• a total collected current calculation unit configured to calculate a total current value Iall of a collected current supplied by the plurality of current collectors from the current value Ip acquired by the transformer current acquisition unit by using a following Equation (1),
• Iall=Ip×(Mall/Mp) Equation (1),
• where Mp is the number of main converters connected to the part of the plurality of transformers, and Mall is the sum total of the number of main converters connected to any one of the plurality of transformers;
• a collected current acquisition unit configured to acquire a first current value IX of a collected current supplied by a current collector or current collectors other than a specific current collector of the plurality of current collectors;
• and
• a collected current calculation unit configured to calculate a second current value IY of a collected current supplied by the specific current collector by subtracting the first current value IX acquired by the collected current acquisition unit from the total current value Iall calculated by the total collected current calculation unit.