The dynamic characteristics of hydropower unit governing systems considerably influence the stability units and connected power system. performances with regulation mode (PRM) opening (ORM) are different. This paper establishes a detailed linear model based on Phillips–Heffron model. damping characteristic two modes different water inertia time constants TW were analyzed. ORM tended to provide ...

In this paper, we propose a new optimized PID controller to stabilize the synchronous machine connected to an infinite bus. The model for the synchronous machine is 4-ordered linear Philips-Heffron synchronous machine. In this research, the parameters of the PID controller are optimally achieved by minimizing a definite fitness function to removes the unstable Eigen-value to the left side of im...

The COVID-19 pandemic has provided momentum for the global energy transition and countries, including Indonesia, should take this opportunity to accelerate process. This paper reviews Indonesian subsidy policy failures using JUST Framework developed by Heffron McCauley (2018) day-watchman approach Soko?owski (2020). article aims provide different views on why have hampered Indonesia's transitio...

Low-frequency oscillations due to unpredictable disturbances in an interconnected power grid are a serious threat the stability of system. Reliable operation modern system, when exposed sudden disturbances, is crucial, and safe system directly related success damping oscillations. Power System Stabilizer (PSS) devices have been used reduce fluctuations caused by short-time systems. These provid...

In this paper, we propose a new optimized PID controller to stabilize the synchronous machine connected to an infinite bus. The model for the synchronous machine is 4-ordered linear Philips-Heffron synchronous machine. In this research, the parameters of the PID controller are optimally achieved by minimizing a definite fitness function to removes the unstable Eigen-value to the left side of im...

Abstract: In this study, on basis of a novel control scheme for Interline Power Flow Controller (IPFC), the dynamic performance of the IPFC is investigated. For this purpose, the Heffron-Phillips model of a Single machine power system is extracted and a novel feedback-based supplementary IPFC controller is applied to the power system. The Particle Swarm Optimization (PSO) algorithm which has a ...

A recent multi-country study on hormonal contraceptives (HC) and HIV acquisition and transmission among African HIV-serodiscordant couples reported a statistically significant doubling of risk for HIV acquisition among women as well as transmission from women to men for injectable contraceptives. Together with a prior cohort study on African women seeking health services, these data are the str...

Recently, genetic algorithms (GA) and particle swarm optimization (PSO) technique have attracted considerable attention among various modern heuristic optimization techniques. Since the two approaches are supposed to find a solution to a given objective function but employ different strategies and computational effort, it is appropriate to compare their performance. This paper presents the appl...

1.Barany, F. 1985. Single-stranded hexameric linkers: a system for in-phase insertion mutagenesis and protein engineering. Gene 37:111-123. 2.Barany, F. 1985. Two-codon insertion mutagenesis of plasmid genes by using singlestranded hexameric oligonucleotides. Proc. Natl. Acad. Sci. USA 82:4202-4206. 3.Botstein, D. and D. Shortle. 1985. Strategies and applications of in vitro mutagenesis. Scienc...

Recently, genetic algorithms (GA) and particle swarm optimization (PSO) technique have attracted considerable attention among various modern heuristic optimization techniques. Since the two approaches are supposed to find a solution to a given objective function but employ different strategies and computational effort, it is appropriate to compare their performance. This paper presents the appl...