주파수 안정도 유지를 위한 부하차단 시뮬레이션-가스분리플랜트 사례

LOAD SHEDDING SIMULATION FOR MAINTAINING FREQUENCY STABILITY-GAS SEPARATION PLANT CASE

The industrial power system has the radial plant distribution system and domestic generators to supply the essential loads. When the system is isolated from the utility tie line, the system frequency drops resulting in the trip of generators. The load shedding scheme shall be properly designed to secure the essential load. In this paper two kinds of load shedding schemes, those are, the Fast Act Load Shedding(FALS) and Under Frequency Load Shedding(UFLS) are simulated and compared taking an example of petrochemical gas separation plant.