Implementation of Particle Swarm Optimization Method for Voltage Stability Analysis in 150 kV Sub System Grati - Paiton East Java

• Published in: IOP conference series. Materials Science and Engineering 2018-04, Vol.336 (1), p.12001
• Main Authors: Kusumaningtyas, A B, Hidayat, M N, Ronilaya, F
• Format: Article
• Language: English
• Subjects: Capacitors; Electric utilities; Particle swarm optimization; Radial distribution; Reactive power; Stability analysis; Voltage stability
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/336/1/012001

Based on the data from State Electric Company on 15 January 2013, the undistributed power in the 150 kV sub system Grati-Paiton Region IV, that consist of 26 bus 150 kV and 2 bus generation 500 kV system, was recorded 3.286,00 MW. At the same time, the frequency of the system was down to 49 Hz. This lead to a deficit generation and unstable voltage condition in the system. Fast Voltage Stability Index (FVSI) method is used in this research to analyze the voltage stability of the buses. For buses with unstable voltage condition, reactive power will be injected through capacitor installation. The site where the capacitor will be installed is determined using the Fast Voltage Stability Index (FVSI) method while the size of the capacitor is determined using the Particle Swarm Optimization (PSO) method. The PSO method has been applied in some researches, such as to determine optimal placement and sizing in radial distribution network as well as in transmission network.. In this research, the PSO method is used to find the Qloss of an interconnection transmission system, which in turn, the value of the Qloss is used to determine the capacitance of the capacitor needed by the system.