Certain investigations on synchrophasor based monitoring and protection of power grids with renewable energy sources

Abstract

Contributes towards the growth of a nation. Currently, the load demand is met newlinethrough fossil fuel-based generations. The adverse effects of fossil fuel-based newlinegeneration are that they degrade the environment with greenhouse gases and newlinecauses a serious threat to climate in terms of global warming. In this context, newlineUnited Nations Development Programme has also emphasized the importance newlineof Renewable Energy Sources (RES) in providing affordable and clean energy newlinein their sustainable development goals. Integration of RES systems pose a threat to operation and control of traditional power systems. Issues related to integration of RES in the newlinetransmission grid are as follows. Distance protection schemes are deployed for the protection of transmission lines. With integration of RES, the impedance read by newlinethe distance relays gets altered and leads to maloperation of distance newlinerelays. For enhancing power transfer capability of transmission lines, series newlinecompensation capacitors are generally deployed. Interaction of newlinecontrol circuitry of converters of RES with the series compensation newlinecapacitor triggers undamped power oscillations that grows rapidly, newlineleading to tripping of transmission infrastructure. newlineSome of the issues related to integration of RES in distribution grid are newline Islanding detection Power quality issues etc., The currently available SCADA based grid monitoring system is not reliable as the SCADA system lacks dynamic visibility of various events happening on the power grid. In this research, synchrophasor are widely newlinedeployed to overcome the issues related to grid integration of large-scale RES. newlineAs a preliminary work, Synchrophasor or Phasor Measurement Unit (PMU) is newlinemodelled, simulated and implemented through hardware components in newlineMATLAB and LabVIEW environments. The developed laboratory scale PMU newlineis also validated against IEEE c37.118 standards. Research work on algorithm development for islanding detection using micro-synchrophasor is proposed. Three islanding and non-islanding scenarios (ISs and NISs) are propose