ABSTRACT
Indian power system witnessed its largest very short-time demand ramping during light off event conducted to express solidarity with COVID-19 volunteers. 32 GW demand ramping was observed within 25 minutes and recorded as the highest ramping event across the globe. System operator has taken precautions and successfully handled the event with the help of hydro generation. However, system experienced severe frequency and voltage deviations due to unexpected consumer behaviour. A systematic study and an in-depth analysis of such a severe event would help system operators and planners to prepare for similar events. This paper presents a critical analysis of the activity and conducted a survey to understand consumer response during that event. It also proposes a modified Bottom-Up Approach to estimate Expected Demand Reduction (EDR) for such critical events. Proposed model is validated using data collected from the conducted survey. Proposed EDR estimation model offers better results than the Top Down and Bottom-up approach models used by system operator. © 2022 IEEE.
ABSTRACT
This paper provides an effective method for optimal sizing and allocation of DGs & D-STATCOM placement to minimize the actual power losses and improve voltage profile in RDS (Radial Distribution System) with incorporating effect of load growth & load modelling. The technique's legitimacy is tried on the standard IEEE 33-bus RDS by performing load flow analysis after compensating the candidate bus. The outcomes acquired are contrasted with and without the Solar Photovoltaic Panel based DG (PVDG), Wind Turbine based DG (WTDG) and D-STATCOM for minimum actual power loss. Further the changes in the operational circumstances of PVDG and WTDG as well as D-STATCOM, are also investigated in order to fulfil the shifting load profile while preserving the voltage constraint and minimizing real power loss owing to the COVID-19 pandemic. The variation in operational setting and the power supplied to the grid for compensating the coal-based generation during the lockdown, pan-India lights off event and Unlock 1 are also studied in the paper. © 2022 IEEE.