Study on a system frequency response model for a large industrial area load shedding

Load Sheddingtechniques For System With Cogeneration: A Review

“…Programmable logic controller is programmed at substations to initiate a trip signal to the appropriate feeder breakers. Programming is based on the number of generators, total amount of load, and the underfrequency conditions [42][43]. It involves continuous monitoring of circuit breaker positions, generator status, and overall power flows in the system.…”

Regional frequency response analysis under normal and emergency conditions

“…if the frequency passes the load shedding frequency threshold f t , the UFLS as an emergency control plan is needed to recover the system frequency [9,21]. It is notable that the frequency (and even its rate of decline) is difficult to determine from individual measurements locations during a transient condition, because of the inter-area oscillations.…”

“…Most published works on the power system frequency regulation have considered separate modeling and even analysis spaces for the normal, LFC and emergency conditions [4][5][6][7][8][9]. This paper presents an analytic approach to examine the frequency regulation and evaluate the frequency response under normal, LFC and emergency operating conditions.…”

An Analysis of Decentralized Demand Response as Frequency Control Support under CriticalWind Power Oscillations

“…In this context, different load shedding schemes that have been proposed take into account a certain frequency threshold, as well as a certain rate of change of frequency (ROCOF) [17][18][19][20]. This demand-side complementary control could significantly help in maintaining grid frequency, as some authors consider that 40% of residential appliances are compatible with the proposed load control strategies [21].…”