Title :
Multiple overcurrent relays using a single microprocessor
Author :
Manzoul, Mahmoud A.
Author_Institution :
Dept. of Electr. Eng., Southern Illinois Univ., Carbondale, IL, USA
fDate :
8/1/1990 12:00:00 AM
Abstract :
The implementation of a four-overcurrent-relay system using a single 8085 microprocessor is described. The implementation is based on the concept of multitasking in microprocessors. The relays are considered to be independent of each other. Each relay is realized by a separable counter and a look-up table in the memory. The software development and hardware testing are done using the HP-64000 UX Microprocessor Development System. The system does not depend on the 8085 microprocessor; other microprocessors can be used. The hardware and software are modular, and more relays can be added
Keywords :
microcomputer applications; overcurrent protection; power engineering computing; relay protection; 8085 microprocessor; HP-64000 UX Microprocessor Development System; four-overcurrent-relay system; hardware testing; single microprocessor; software; Decoding; EPROM; Latches; Microprocessors; Pins; Protection; Protective relaying; Pulse generation; Read-write memory; Relays;
Journal_Title :
Industrial Electronics, IEEE Transactions on
