Addressing the challenges in feeding Railway Platform Roof-Top PV Generation to 25 kV AC Overhead Traction

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Authors : Nagesh S Pande, Dr Atul R Phadke, Dr Prashant J Gaidhane

DOI :10.46335/IJIES.2025.10.4.12

Abstract-  Indian Railway has intended to harness 1000 MW of solar energy in the upcoming five years. 500 MW will come from the rooftops of railway platforms while the remainder will be sourced from other official ancillary complexes to support traction load. TSS in railway traction power supply is installed for every 50 to 90 km segment along the railway track for both UP and DOWN routes. Given a rooftop area of 1000 to 5000 sq-metre, it is feasible to install solar panels capable of producing 100 kW to 500 kW, resulting in savings on conventional energy consumption from utilities of approximately 30 to 40%. Neutral sections help ensure balanced loading across all three phases of utility, as the phases R, Y, and B are loaded sequentially. This paper investigates the continuously attempted model of directly feeding solar power from railway platform rooftops to 25 kVAC traction supply employing dynamic inter-phase power flow techniques in real-time with all related equipment balance. To address the challenges associated with neutral sections in the electric railway traction system, interphase power controllers (IPC) are utilized. Consequently, the Gannet optimizer-based fuzzy fractional order proportional integral derivative (G-F2PID) controller is suggested in this study for phase synchronization.