Load Frequency Control (LFC) is an issue of top importance to ensure microgrids (MGs) safe and reliable operation in AC MGs. Primary frequency control each energy source can be guaranteed MGs order integrate other sources. This paper proposes a micro-hydro scheme, combining the reduced dump load nozzle flow Pelton turbines operating isolated from electricity grid. Some researchs have reported i...

This paper proposes the use of a fuzzy logic controller (FLC) that serves to enhance the power quality of a three phase ac-ac converter system with a dc link. The FLC is designed so as to shape the load current to a nearly sinusoidal fashion and contribute in improving the input power factor, lowering the total harmonic distortion (THD) and eliminating higher order harmonics. The Digital Signal...

In railway power supply systems using AC frequencies lower than the public grids of 50/60 Hz, high voltage AC overhead transmission lines in railway grid frequency are used as one measure of strengthening the systems. An increased resistance to overhead high voltage AC transmission lines, may motivate cables for future railway power systems. With the frequency of 50/60 Hz, reactive power produc...

The research in this final project discusses the economic calculation of electrical energy consumption a 220 VAC system at residential load on type 54 house. simulation AC is carried out with ETAP 12.6 software. Simulation done by making installations loads cables that have length according to distance loads. From simulation, it can be seen current and line resistance values report manager disp...

This paper proposes the use of a fuzzy logic controller (FLC) that serves to enhance the power quality of a three phase ac-ac converter system with a dc link. The FLC is designed so as to shape the load current to a nearly sinusoidal fashion and contribute in improving the input power factor, lowering the total harmonic distortion (THD) and eliminating higher order harmonics. The Digital Signal...

This paper presents a method in expansion planning of transmission systems using the AC optimal power flow (AC-OPF). The AC-OPF provides a more accurate picture of power flow in the network compared to the DC optimal power flow (DC-OPF) that is usually considered in the literature for transmission expansion planning (TEP). While the AC-OPF-based TEP is a mixed-integer nonlinear programming prob...

A mass boil-off measurement system has been used to accurately measure and characterize the ac loss of high-temperature superconductor (HTS) coils at frequencies between 50 and 200 Hz, and in applied ac fields of up to 0.04 T. The mass boil-off calorimeter incorporated a glass cryostat, a copper field coil, and two mass flow meters. The response of the gas flow to a step change in the applied m...

Recently, there has been considerable research interest in the potential for DC distribution systems buildings instead of traditional AC systems. Due to need performing power conversions between and electricity, may provide electrical efficiency advantages some To support comparative evaluations AC-only, DC-only, hybrid AC/DC buildings, a new modeling toolkit called Building Electrical Efficien...