| Summary: | 500 kV Java Bali electric power system is vital and
Voltage stability is one factor to be considered in planning and operation of
electrical power systems. Voltage collapse phenomenon should be prevented and
it could happen because of several condition such as high loading,contingency,
or other disturbances.
important power system, that required careful planning and operation. System
voltage instability is undesirable, then condition of the system�s voltage stability
should be evaluated. In this study, the voltage stability of 500 kV Java Bali
electric power system on October 22, 2013 will be seen using Fast Voltage
Stability Index (FVSI), at 14:00 WIB and 19:00 WIB. Contingency scenarios also
performed on the lines and the effect to voltage stability shown by simulation of P-
V curve with Continuation Power Flow (CPF) method. This research used
program Matpower 4.1 as a tool.
The results show that the lines condition system on October 22, 2013 at
14:00 WIB and 19:00 WIB have index values less than 1. The addition of the load
caused the line between Tasikmalaya-Depok reached index value 1 when the
index values increase up to 2483 MW active load and reactive load increase up to
1090 Mvar at 19.00 WIB. Three lines that had the highest index were Paiton-
Kediri, West Surabaya-Ungaran, and Tasikmalaya-Depok. From the simulation
results, the line contingency caused a loading change of other lines, change of
FVSI value, decrease of the voltage profile and voltage stability, evidenced by the
P-V curve with Continuation Power Flow (CPF) method.
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