Optimal Inverter-Based DG Placement considering Energy Loss, Reliability, Voltage Sag, DG, and Substation Power Cost Issues

Abstract

This article presents a comprehensive multi-objective-based optimization problem formulation for finding the optimum size, site, and number of inverter-based DGs (IBDGs) for the operation of the distribution system so as to minimize annual energy cost comprising of costs for the energy loss during the normal operating state, running the IBDGs, substation power including penalty for reverse power flow (if any) and the average energy not supplied as a measure of reliability. Besides, the cost of average apparent load disturbed as a result of voltage sags during faults is also considered. The method is tested on the 33-bus distribution test system using particle swarm optimization. The results so obtained, demonstrate the effectiveness and applicability of the proposed formulation to find the optimum location(s), size(s), and number of IBDG(s) in the radial distribution system with appropriate constraints consideration.

Keywords:

• DG cost
• ENS
• inverter-based DG
• IBDG current limit
• load level
• voltage sag

Additional information

Notes on contributors

Debasish Rath

Debasish Rath obtained his B.E. degree from U.C.E. (at present VSSUT) Burla, M.Tech. degree in electrical engineering from IIT, Kharagpur in 1995 and 2008, respectively. He worked as a research scholar under QIP, AICTE – New Delhi, during 2015-2018 at Jadavpur University, Kolkata, India. At present he is working as an Assistant Professor at Department of Electrical Engineering, Parala Maharaja Engineering College, Berhampur, Govt. of Odisha. His current research interests include distributed generation applications and distribution system network management strategies.

Sunita Halder nee Dey

Sunita Halder Nee Dey received her B.E. degree from Jalpaiguri Govt. College, NBU, M.E. degree and Ph.D. degree from IIEST, Kolkata in electrical engineering in 1998, 2001, and 2006, respectively. Currently, she is a Professor in the Electrical Engineering Department, Jadavpur University, India. Her research interests are mainly in power system operation and control, OPF, voltage stability, FACTS applications and distributed generation.

Swapan Kumar Goswami

Swapan Kumar Goswami received the Ph.D. degree in electrical engineering from Jadavpur University, Kolkata, India, in 1991. Currently, he is a Professor of the Electrical Engineering Department, Jadavpur University, India. His research interests include soft computing applications in power systems, distributed generation, microgrid and deregulation.