Title :
UFLS program to ensure stable island operation
Author :
Imai, Shinichi ; Yasuda, Tadaaki
Author_Institution :
Tokyo Electr. Power Co., Japan
Abstract :
This work highlights an introduction of UFLS (Under Frequency Load Shedding) program TEPCO (The Tokyo Electric Power Company, Inc.) has applied for more than 20 years and our experiences of dynamic simulation to determine the UFLS settings. The study concluded that the island separated from main grid where load - generation imbalance is greater than 30% can be saved by our unique UFLS scheme. Coordination with UFLS settings and over-excitation protection are critical to keep secure system performance.
Keywords :
cascade systems; load shedding; overvoltage protection; power generation protection; power system dynamic stability; power system security; Tokyo Electric Power Company,Incorporated; dynamic simulation; island operation; load - generation imbalance; over voltage; over-excitation protection; power system dynamic stability; secure system performance; under frequency load shedding program; Equations; Frequency estimation; Load flow; Mesh generation; Power system dynamics; Power system faults; Power system protection; Power system stability; Power systems; Voltage;
Conference_Titel :
Power Systems Conference and Exposition, 2004. IEEE PES
Print_ISBN :
0-7803-8718-X
DOI :
10.1109/PSCE.2004.1397430
