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

Claim 12:
13. A solid state circuit breaker, wherein the solid state circuit breaker is at a power supply end of a power grid bus in a (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 breaking current value obtaining unit, configured to obtain a breaking current value of the solid state circuit breaker according to the detected direction of the current;
a maximum threshold obtaining unit, configured to obtain a value of a maximum threshold current to flow through the solid state circuit breaker, wherein the breaking current value is less than the maximum threshold current value;
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 breaking current value; and
a breaking unity configured to delay the solid state circuit breaker upon the predicted current value being greater than the breaking current value, and control the solid state circuit breaker to disconnect a circuit in which the solid state circuit breaker resides when the predicted current value is greater than the maximum threshold current value, make.