Search Results - subject:"small hydro"

Probabilistic Flow Duration Curves for Small Hydro Plant Design and Performance Evaluation

Niadas, Ioannis; Mentzelopoulos, Panos - In: Water Resources Management 22 (2008) 4, pp. 509-523

and performance evaluation of small hydro plants. The probabilistic approach aims to quantify the uncertainty influencing … evaluation is provided based on a typical small hydro plant in a mountainous region of Greece. The results of this study however …

Persistent link: https://www.econbiz.de/10010794166

Case study of upgrading potential for a small hydro power station

Thorburn, Karin; Leijon, Mats - In: Renewable Energy 30 (2005) 7, pp. 1091-1099

Schemes for upgrading hydro power are formed in many parts of the world. Small hydro power (<15MW) constitutes a …

Persistent link: https://www.econbiz.de/10010805906

Anti-islanding protection and islanding operation of grid-connected hydropower distributed generation

Kashem, M.A.; Ledwich, G. - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 76-85

Salient issues associated with the connection of hydropower distributed generation (HPDG) into distribution networks include operation and voltage regulation, grid connection and control interaction, anti-islanding protection and islanding operation, and operation of protective devices. Better...

Persistent link: https://www.econbiz.de/10010669966

Control of dynamic effects in small hydro with long hydraulic circuits

Ramos, Helena; Almeida, A. Betamio De - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 47-58

Lab tests in a long hydraulic circuit were developed to analyse hydrotransients induced by waterhammer effects under runaway conditions. The definition of suitable design criteria in hydraulic systems is of utmost importance and has become a priority for good design implementation. The dynamic...

Persistent link: https://www.econbiz.de/10010669975

Small hydropower projects and sustainable energy development in Sri Lanka

Morimoto, Risa; Munasinghe, Mohan - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 3-18

Sustainable development has evolved to encompass three major viewpoints: economic, social and environmental. Given the wide-ranging potential impacts of energy on national sustainable development, we review the linkages between these two topics. In the Sri Lanka case study presented here, the...

Persistent link: https://www.econbiz.de/10010670000

Enhancing small hydro automation using distributed micro-controllers and simulation

Foss, Aidan; Grandmaitre, Yves; Kemp, William - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 19-28

computing. Applying these technologies to small hydro automation, affordable multifunctional distributed processing solutions is …

Persistent link: https://www.econbiz.de/10010816872

Voltage controlled stand-alone microhydro induction generator system

Nigim, K.A. - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 100-111

The paper discusses simulated control cases of the wound rotor self-excited induction generator WRSEIG. The generator external controller is designed to regulate the output voltage and frequency for constant or variable speed operation of the prime mover and has the inherent capability of...

Persistent link: https://www.econbiz.de/10010816874

Comparison of single phase self excited induction generator excitation configurations using the main and auxiliary windings for a micro hydro system

Oh, Taekil; Freere, Peter - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 112-125

Induction generators are one of the most popular generators for micro hydro systems. Three phase generators are often used even though only a single phase supply is needed. This paper investigates the characteristics of single phase induction generators. Many different winding and excitation...

Persistent link: https://www.econbiz.de/10010816885

Reactive power control of wind-diesel-micro-hydro hybrid power systems using matlab/simulink

Bansal, R.C.; Bhatti, T.S.; Kothari, D.P.; Bhat, S. - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 86-99

This paper presents reactive power control of isolated wind-diesel-micro-hydro hybrid power system for realistic load disturbance using matlab/simulink. The mathematical model of the system based on matlab/simulink is developed. Reactive power control performance is compared using three...

Persistent link: https://www.econbiz.de/10010816918

A novel technique proposed for automatic control of small hydro power plants

Goyal, Himani; Bhatti, T.S.; Kothari, D.P. - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 29-46

A new scheme is proposed for the speed control of hydro turbines. Power can be controlled by controlling the rotary motion of the spear valve or linear motion of the sluice gate. In this paper, necessity for speed control, various function of governors, types, speed regulation of...

Persistent link: https://www.econbiz.de/10010816935