Patent ID: 11923674
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A solid state circuit breaker, wherein the solid state circuit breaker is at a load end of a power grid bus in a direct current (DC) power grid, the solid state circuit breaker comprises:
an apparatus for controlling the solid state circuit breaker, the apparatus including,
a current direction detection unit; configured to detect a direction of a current flowing through the solid state circuit breaker;
a maximum threshold obtaining unit, configured to obtain a value of a maximum threshold current to flow through the solid state circuit breaker;
a predicted current value obtaining unit configured to obtain a predicted current value within a next sampling period of a present sampling period of the solid state circuit breaker;
a comparison unit configured to compare the predicted current value with the maximum threshold current value upon the detected direction of the current being a direction from a load end of the solid state circuit breaker to a power supply end; and
a breaking unit configured to control solid state circuit breaker to disconnect a circuit in which the solid state circuit breaker resides upon the predicted current value being greater than the maximum threshold current value.