Date of Award
2007
Degree Type
Thesis
Degree Name
Master of Engineering Science
Program
Electrical and Computer Engineering
Supervisor
Dr. T.S. Sidhu
Abstract
In a power system, every apparatus is equipped with a primary protection to detect faults and isolate the equipment by opening a circuit breaker. Circuit breaker failure protection is employed as a means of backup protection to detect failure of a circuit breaker. In this thesis, two critical challenges facing numerical breaker failure relays viz. longer reset time of breaker failure algorithms and secure detection of binary inputs for breaker failure initiation are examined by means of simulations and experiments. Two new fast resetting algorithms for breaker failure protection with reset time of less than half a power system cycle and digital processing of binary inputs using a new binary recognition algorithm are proposed as means of enhancing numerical breaker failure protection. Simulations and experiments reflecting realistic conditions were used for performance evaluation of the enhanced breaker failure algorithms. The proposed algorithms have a reset time of around half a cycle compared to 2-3 cycles in the case of a commercial numerical breaker failure relay. The binary recognition algorithm exhibits dynamic debouncing abilities while enhancing the security of recognition.
Recommended Citation
Muthukrishnan, Vijayasarathi, "ENHANCED NUMERICAL BREAKER FAILURE PROTECTION" (2007). Digitized Theses. 5063.
https://ir.lib.uwo.ca/digitizedtheses/5063
