| abstract |
The utility model discloses a transformer substation uses high reliability DC power supply. In order to overcome the defects of series connection of battery packs of a direct current power supply system, poor reliability and single lagging effect in the prior art; when the AC is lost and the DC load is short-circuited, the short-circuit current can not be cut off. The utility model adopts a bus, an AC/DC module, a breaker, a DC load, a DC/DC module and a battery module; the bus at the input end of the AC/DC module is an alternating current bus, the bus at the output end of the AC/DC module is a direct current bus, the direct current bus is connected with a direct current load, and the breaker is arranged on the direct current bus; the battery module comprises a plurality of battery packs connected in parallel, and each battery pack is connected with a DC/DC module; the DC/DC module is connected with the direct current bus; and guide elements are arranged between the battery pack and the direct current bus and between the battery packs. The supply of a direct current power supply is ensured, the problem of the lagging effect of a single battery is solved, and the reliability is improved; when short circuit occurs, the circuit breaker is provided with cut-off current, and the safety is improved. |