The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper describes “Community scale, decentralized anaerobic digestion for energy and resource technology” which is a joint UK-Thailand project much in line with the current aims of the Thai Government for decentralized energy generation. The use of food waste for biogas generation by the process of anaerobic digestion provides multiple benefits: decreased energy dependency, nutrient preservation...
The rotary dryer and roaster for fresh chili by using heat energy from LPG was designed and fabricated as 60 cm × 120 cm of cylindrical drum. It was tested with 3, 5, and 7 rpm of different speeds at a constant temperature of 105°C. A Chilli sample of 13 kg was dried from an initial moisture content of 77.63% wb to 13% wb. The test showed that at a speed of 5 rpm, the quality of dried chilli was the...
In the advent of multinational cooperation within the Southeast Asian region, massive connectivity for both goods and services has been envisioned. Energy systems are ought to be collaborated to jointly develop a borderless electricity industry and one of which is the Philippines-Sabah interconnection to be inaugurated in 2020. This paper presents an analysis on the small signal stability and transient...
Being stochastic phenomena, magnitude and direction of wind spectra, available at a site, may vary with time which results in frequent changes in the output from the wind turbines. This frequent fluctuation in the output from the turbines makes the grid integration of wind energy systems rather challenging. Understanding the ramping behaviour of wind turbines under fluctuating wind conditions is essential...
Along with the rapid expansion of the MW sized big wind turbine sector, the small wind turbine industry is also growing. Understanding the power response of these systems to the variations in wind velocity is essential for the optimal selection and efficient management of these turbines. This is defined by the power curves of wind turbines. In this paper, we propose nonparametric models for the power...
Brunei Darussalam, located at the north coast of the island of Borneo in Southeast Asia, has an ambitious program on managing its available energy resources. The country has a commitment to reduce the energy intensity by 63 per cent by 2035 and meeting 10 per cent the energy demand by renewable sources by this period. In this paper, we model this long term National energy scenario using the LEAP System...
Gasification technology is a well-known biomass conversion usually associated with high amount of tar in the producer gas. Various studies have been conducted in eliminating or reducing tar content. This study focuses on the development of a single-stage downdraft gasifier with an automatic shaking grate mechanism in improving the quality of the producer gas. If concentration of tar is further reduced,...
The objectives of this research were to study using of pig-dung biogas as fuel for a metal cutting process, to study the surface roughness of the cut metal, and to analyze metal composites influenced by heat. The specimens were AISI 1045 with the size of 50 mm × 50 mm × 6 mm. They were cut by a cutter KT 5NX and then the surface roughness was measured by Mitutoyo SURFTEST SJ-301. The result showed...
The increasing demand for electrical power necessitates the expansion of power system, which is constrained by land availability and other resources. This results in the utilization of power system upto its stability limits. The TTC for an instance gives us the load that can be further supplied by the system before it loses stability. This paper aims at computing the stability limits of the power...
Magnetic suspension systems are highly non-linear and unstable. Magnetic levitation system is modelled here and PID, FUZZY and LQR are designed to control the system. All the controllers are designed in Matlab and checked in real time. Rise time, peak overshoot and settling time are compared with each controller and result is noted and compared.
In the current electricity market, the demand for power increases exponentially day by day. The ISO can boost the power sales by using “willingness to pay” approach on the consumers. This paper proposes a novel approach of scheduling power by incorporating willingness to pay of consumers into the load dispatch problem. The consumers with higher willingness to pay usually use appropriate capacity transmission...
The goal of electric distribution design and planning is to meet the customer reliability requirement at the lowest investment cost. Smart grid (SG) investment has a potential to meeting these goals. However, the risk of investment of smart grid needs to be considered such as the decision of the investment area, suitability of automatic devices for the power interruption cause and installation position...
In a wind farm, where several wind turbines are arranged in rows and columns, the wind speed available for the downstream turbines are significantly reduced by the wake effect. The wake losses can reduce the total productivity of a wind farm up to 20 per cent. Understanding the wake pattern in an existing wind farm is essential for the short-term wind power forecast. In this paper, we propose the...
This paper presents a comparison of the response from Power Oscillation Damping (POD) function designed for a renewable energy source and the response from Power System Stabilizer (PSS) on the excitation control system. The well-known 3 machines 9 bus system, including a Western Electricity Coordinating Council (WECC) simplified model generator/ converter was used in the study. A three phase fault...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.