US 12,341,333 B2
Topology agnostic detection and location of fault in DC microgrid using local measurements
Sukumar Brahma, Clemson, SC (US); and Munim Bin Gani, Clemson, SC (US)
Assigned to CLEMSON UNIVERSITY RESEARCH FOUNDATION, Clemson, SC (US)
Filed by CLEMSON UNIVERSITY, Clemson, SC (US)
Filed on Aug. 30, 2022, as Appl. No. 17/899,173.
Claims priority of provisional application 63/242,253, filed on Sep. 9, 2021.
Prior Publication US 2023/0076181 A1, Mar. 9, 2023
Int. Cl. H02H 3/00 (2006.01); G01R 19/25 (2006.01); H02H 1/00 (2006.01); H02H 3/20 (2006.01)
CPC H02H 3/202 (2013.01) [G01R 19/2513 (2013.01); H02H 1/0007 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of protecting a DC feeder electrical power network, the method including the steps of:
providing one or more circuit breaker arrangements which on activation isolate electrical faults within the network;
sampling voltage and current of the network at a relatively high sampling rate;
determining the occurrence of and location of a fault in the network based on the sampled voltage and current; and
activating one or more of the circuit breaker arrangements in response to determining the occurrence of a fault, wherein
said determining includes calculating a current derivative, and conducting three consecutive samplings of the voltage and current at up to about 1 MHz sampling rate.