COMMUNICATION MODULE AND COMMUNICATION METHOD FOR DIGITAL PROTECTIVE RELAY CAPABLE OF MINIMIZING AN INTERRUPT FREQUENCY GENERATED IN A MICROPROCESSOR USING HDLC(HIGH LEVEL DATA LINK CONTROL) PROCEDURE COMMUNICATION

摘要

PURPOSE: A communication module and data communication method for a digital protective relay are provided to sufficiently perform an inherent function of a digital protective relay.;CONSTITUTION: A communication module for a digital protective relay includes a HDLC protocol(100), a shared memory(200), a multiplexer(300), a communication unit(400) and an interrupt(500). The HDLC protocol transceives data by performing half duplex communication with an upper monitoring system. The shared memory transceives data with the HDLC protocol and provides a bidirectional interface. The multiplexer transceives data with the shared memory and transmits the signal by selecting one input signal by a selected control signal in a plurality of circuit input signals. The communication unit transceives data with the multiplexer and transceives data with a desktop and a controller by performing communication. The interrupt transmits a single signal with respect to one communication packet received in the HDLC to the control unit.;COPYRIGHT KIPO 2013