Multi-Objective Approach for Reconfiguration of Distribution Systems with Distributed Generations

Abstract

This paper presents a fuzzy multi-objective based heuristic algorithm for network reconfiguration of distribution systems considering distributed generations (DGs). The objectives of reduction of real power loss, branch current carrying capacity limit, maximum and minimum voltage constraints, and feeder load balancing are considered for performance enhancement of the distribution system. Since these objectives are non-commensurable and difficult to solve simultaneously using conventional approaches, they are converted into fuzzy domain and a fuzzy multi-objective function is formulated. A sensitivity analysis based on voltage profile improvement and real power loss reduction is used for obtaining optimal locations of DGs and genetic algorithm is used for optimal sizing of DGs. The proposed reconfiguration algorithm is implemented in two stages, initially in the first stage without incorporating DGs and in the second stage incorporating DGs for obtaining an optimal distribution system network reconfiguration. The advantage of the proposed method is demonstrated through a seventy node four feeders and a sixteen node three feeders distribution systems.

Keywords::

• distributed generations
• network reconfiguration
• sensitivity analysis
• fuzzy multi-objective approach
• four feeder distribution network
• genetic algorithm
• branch current carrying capacity
• heuristic approach
• distribution system
• feeder load current balancing

Additional information

Notes on contributors

Srinivasa Rao Gampa

Srinivasa Rao Gampa received the B. E degree from the Andhra University, Visakhapatnam, India, in 2001, the M. Tech. degree from the National institute of Technology Calicut, Calicut, India in 2004, and Ph.D. degree from the Indian Institute of Technology Kharagpur, Kharagpur, India in 2016. Currently, he is working as a professor in the Gudlavalleru Engineering College, Gudlavalleru, Andhra Pradesh, India. His research interests are electric power distribution systems, power system dynamics, renewable energy, and microgrids.

Debapriya Das

Debapriya Das received the B.E. degree from the Calcutta University, Calcutta, India, in 1982, the M. Tech. degree from the Indian Institute of Technology, Kharagpur, Kharagpur, India in 1984, and the Ph.D. degree from the Indian Institute of Technology, Delhi, India in 1992. Currently, he is a professor at the Indian Institute of Technology, Kharagpur, India. His research interests are electric power distribution system, power system operation and control, and microgrid operation.