Paper Title
Stability of Highly Unstable Power Systems Using APFC and Study of PLC Based Automatic Train Loading Systems in Open Cast Coal Mines

This paper deals with stability of power systems with high fluctuating loads that are caused due to continuous operation of high capacity electric shovels (up to 42 cum), drills, surface miners and high capacity Induction Motors in open cast Coal mines using Automatic Power factor corrector (APFC). The purpose of this automatic PF corrector is to ensure that Power factor of unity is consistently maintained in the power system. This paper also envisages the technology used for efficient dispatch of millions of tons of coal by automatic train loading system. The System operating on Program Logic Control (PLC) works through Silos (Coal Storage Area), Coal Handling plant (CHP) consisting of conventional belt conveyors and Coal Crushers.