The auxiliary DC control power system is considered the most crucial element of a protection, control, and monitoring system. The failure of the direct current (DC) control power can result in the inability of fault detection devices to identify faults,... Read more

The post Auxiliary DC power system used for fault detection, trip coils and remote operation appeared first on EEP - Electrical Engineering Portal.

Disclosed are a circuit fault detection system and method for a circuit fault detection. A circuit fault detection system includes: a detection circuit including a diode, a first resistor, and a second resistor, which are positioned between an applied voltage source and a top of a detection target circuit in series, and a third resistor and a fourth resistor, which are positioned between the detection target circuit and a ground in series, an input unit including a first input terminal configured to receive a voltage measured between the first resistor and the second resistor as an input, and a second input terminal configured to receive a voltage measured between the third resistor and the fourth resistor as an input, a controller configured to detect a failure in the detection target circuit and in an operation of the detection target circuit based on values of the voltages detected by the input unit; and a display unit configured to provide a warning to a user when the failure is detected.

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