Title :
Microcontroller based impedance relay
Author :
Vichitchot, Manit ; Ghandakly, Adel A.
Author_Institution :
Dept. of Electr. Eng., Toledo Univ., OH, USA
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
A novel design for a dedicated-function multiprocessor-based impedance relay is presented. The designated processor is an INTEL MCS-96 16 bit microcontroller. The general hardware architecture of a three-level operation with 5 microcontrollers is introduced. Specifications and performance of each group of microcontrollers, as well as of each level, are discussed. Test results of the rely at various operating conditions are demonstrated. After a fault inception, the relay is able to issue trip signals to the corresponding circuit breakers within 20 ms. The proposed relay offers speed, flexibility, and economy. Potential applications of the proposed relay in an industrial environment include cogeneration or any type of self-generating plants. In such applications the relay is used for network feeder as well as loss-of-field protection.<>
Keywords :
circuit breakers; digital control; microcontrollers; power engineering computing; power system protection; relay protection; 16 bit; INTEL MCS-96; applications; circuit breakers; cogeneration; design; fault inception; feeder; hardware architecture; impedance relay; loss-of-field protection; microcontroller; performance; power stations; power system relay protection; Circuit breakers; Circuit faults; Circuit testing; Cogeneration; Hardware; Impedance; Microcontrollers; Process design; Protective relaying; Relays;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178105
