1. Dr. DINESH KUMAR SINGH - Assistant Professor, Department of Electrical Engineering, Shambhunath Institute of Engineering and
Technology, Prayagraj, UP, India (Affiliated to Dr. APJ Abdul Kalam Technical University, UP, Lucknow,
India).
2. Dr. NIRAJ KUMAR SHUKLA - Assistant Professor, Department of Electrical Engineering, Shambhunath Institute of Engineering and
Technology, Prayagraj, UP, India (Affiliated to Dr. APJ Abdul Kalam Technical University, UP, Lucknow,
India).
3. Dr. PAVAN KUMAR SINGH - Assistant Professor, Department of Electrical Engineering, Shambhunath Institute of Engineering and
Technology, Prayagraj, UP, India (Affiliated to Dr. APJ Abdul Kalam Technical University, UP, Lucknow,
India).
4. Dr. KAMAL PRAKASH PANDEY - Professor, Department of Electronics and Communication Engineering, Shambhunath Institute of
Engineering and Technology, Prayagraj, UP, India (Affiliated to Dr. APJ Abdul Kalam Technical
University, Lucknow, India).
In power system network, a fast and efficient protection system is necessary so that system remains stable and continuously reliable. With improvement of technology, most of the networks are ring and meshed type distribution/ sub-transmission levels instead of radial system. The integration of distributed sources at different locations is also a requirement to fulfil the increased load requirements. Due to evolutions in power system topology and network, bidirectional power flow is the standard case. The conventional protection schemes with directional overcurrent relay have large total operating time. So, dual-setting directional over-current relays are proposed for protecting meshed distribution systems with distributed generations. In dual-setting, primary and back-up both the functionality is offered by a single unit of dual-settings. These settings in two directions are programmed in dual-setting directional overcurrent relay, which work independently. Thus, the total operating time of relays reduces, resulting into improved performance. This article compares between conventional and proposed dual-setting overcurrent relay schemes in IEEE 9-Bus distribution system. A Genetic Algorithm is utilized to minimize the objective function, which is the total operating time of relays. The total time of operation in both schemes are compared.
Distribution system, Dual-Setting OCR, Relay Coordination, Genetic Algorithm, Distributed Generation.