| 摘要 |
PROBLEM TO BE SOLVED: To reduce a construction cost of a DC distribution board system composed of a plurality of DC distribution boards by downsizing the DC distribution boards by dispensing with installation of a voltage sensor in a DC distribution board for each branch feeder.SOLUTION: One of a plurality of DC distribution boards 10a, 10b, ... 10z comprises a DC voltage sensor 6 for detecting voltage of a branch feeder corresponding to the DC distribution board. All of the plurality of DC distribution boards comprise DC current sensors 7a, 7b, ... 7z for detecting current of branch feeders 3a, 3b, ... 3z corresponding to the DC distribution boards. Data on power and power amounts calculated by all of protection measurement devices 8a, 8b, ... 8z in the plurality of DC distribution boards are transmitted from the protection measurement devices to a monitoring control device 9 so that power and power amounts used by a plurality of DC loads of the branch feeders are monitored by the monitoring control device in a lump. |
