Abstract: The embodiments of the present disclosure provide a differential relay protection apparatus, device, system, method, and storage medium. The differential relay protection apparatus includes: a clock module configured to create a first clock for the differential relay protection apparatus, the first clock is configured in a Precision Time Protocol domain, and create a second clock for the differential relay protection apparatus, the second clock operates independently of the first clock; a power data acquisition module configured to acquire power data collected based on the second clock; and a processing module configured to perform differential relay protection function by the first clock.

Abstract: Electronic control apparatus of a kind used in low voltage industrial equipment such as assemblies of motors or circuit breakers. Where an overall controller, e.g. a programmable logic controller (PLC) controls an array of (e.g.) motors (M1, M2, M3) by way of respective control units (13, 23, 33) identification or location of selected motors is usually effected by an address stored in the respective control unit. A faulty control unit entails replacement and loss of the location address which has to be reentered as a skilled operation. The invention provides a separate non-volatile memory (15, 25, 35) for the location address, this memory being physically associated with the particular motor (M1, etc.). A replacement control unit (13, 23, 33) is automatically loaded with the location address which was retained.