Application of functional dependency in protection system coordination
Wan Qiu-lan · Dianli zidonghua shebei · 2003
The Break Point Set(BPS)is the beginning of the coordination.It is an important step to select a suitable break point set and the corresponding relative sequence matrix.After the concept s introduction of the minimal BPS and Relative Sequence Matrix(RSM),the algorithm of functional dependency is introduced.How to apply it to get the mini mal BPS and RSM and to improve the computing speed is presented,in which the simple loop of the system is not required in the proposed algorithm.Because the proposed algorithm is of polynomial complexity while the algorithm of gragh theoretic schemes is of exponential complexity,the former is more efficient ,flexible and convenient than the latter and improves the efficiency of coordination.