Recently many researchers have proposed modifications in objective functions and constraints to improve mathematical formulation of overcurrent relay coordination. Unfortunately, some of them are not as per the required criteria for coordination of overcurrent relays. This paper brings one such issue related to objective function where required criteria is not matched. Moreover, many researchers without considering the technical requirements of overcurrent relay coordination have modified objective function. In this paper, these requirements have been explored and based on the same, a new objective function has been proposed with conventional constraint. In proposed objective function, these technical requirements are taken care and optimum relay setting parameters are obtained satisfying conventional constraints. Further, to evaluate the effectiveness of proposed method, the objective function has been used for IEEE 8-bus distribution system. To achieve optimum setting of the relays, i.e., plug setting and time multiplier setting, genetic algorithm is used. Obtained results are compared with slime module algorithm and water cycle algorithm. Based on results, it is found that proposed objective function produce better results as compared to slime module and water cycle algorithms.
A Method to Formulate Accurate Problem Statement for Overcurrent Relay Coordination
2024-07-31
441711 byte
Conference paper
Electronic Resource
English
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