System for locating a fault in a power distribution system comprising at least one cogeneration distributed resource

A system for locating a fault in a power distribution system, the system comprising:

• a power distribution system comprising one or more feeders and a distribution grid;
• a plurality of distributed resources located on at least one of the feeders, wherein a distance of each of the plurality of distributed resources relative to the distribution grid is known and wherein at least one of the plurality of distributed resources is a cogeneration distributed resource, one or more of the plurality of distributed resources comprising a current injecting circuit to inject, in response to a fault located at one of the plurality of distributed resources on the at least one feeder, a current into the power distribution system when the one or more of the plurality of distributed resources is not located at the fault on the at least one feeder;
• a voltage profile generator to measure, at each of the one or more distributed resources not located at the fault on the at least one feeder, a voltage resulting from the current injected into the power distribution system by each of the one or more distributed resources not located at the fault on the at least one feeder and to generate a voltage profile from the voltage measurements, wherein the voltage profile comprises the voltage level of each of the plurality of distributed resources relative to the distance of each of the plurality of distributed resources from the distribution grid of the power distribution system;
• and
• an analyzer to identify a voltage level drop at one of the plurality of distributed resources located at a first distance from the distribution grid and a corresponding voltage rise at one or more of the plurality of distributed resources located at a second distance from the distribution grid, wherein the second distance is greater than the first distance to identify the location of the fault in the power distribution system.