SYSTEM, APPARATUS, AND METHOD FOR DETECTING FAULTS IN POWER TRANSMISSION SYSTEMS

A system, apparatus, and method for detecting a fault in a power transmission system containing multiple distribution transformers configured in a loop may include a current sensor and one or more processors. The current sensor may be positioned to concurrently sense a primary input current to and a primary output current from a distribution transformer. The processor(s) receives a signal representing an output of the current sensor, determines a value representing a current flowing in a primary winding of the distribution transformer based on the received signal (e.g., the differential current value), and generates an alert when the determined value is outside a desired range of values. A current sensor and a processor may be installed at each distribution transformer in the power transmission system to enable a remote server to directly monitor the primary winding currents of all the distribution transformers in the system to identify any faulty transformer(s).