small hydro Articles
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Implementation of a small hydro power project in India: issues and lessons
In this paper, we present a longitudinal case study of a power sector start-up in India. Using the case as a starting point, we carefully analyse and explore the opportunities and challenges of implementing a small hydro power project in India. Using this case study, we identify the key success factors for a company to succeed in this sector. Based on first-hand observation of the progress of ...
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Hydro energy: techno-economic and social aspects within new climate regime
Small hydro systems can provide electricity for: central-grid, isolated-grids, and/or remote power supplies. Small hydraulic power also provides an extra contribution to national electrical production in the case of consumption peaks. Although hydro is currently the second most used renewable energy source in the world, still there is a significant unexploited potential. The clean development ...
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Enhancing small hydro automation using distributed micro-controllers and simulation
The past ten years has seen significant advances in low-cost micro-controllers, data communications and personal computing. Applying these technologies to small hydro automation, affordable multifunctional distributed processing solutions is now a commercial reality. The ability to reduce costs is facilitated by innovative low-cost simulation tools. The successful application of these ...
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Lower village hydro - Case study
The Lower Village Hydro Dam was built in 1995 and is located on the Sugar River in Claremont, New Hampshire. The plant was last operational in 2011and was acquired by Sugar River Power LLC in January 2017, which owns and operates four other small hydro plants in New Hampshire and Massachusetts. As part of a major plant restoration and repowering project undertaken by the new owners, CHC is ...
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Minimum Flow Units - Case Study
Environmental regulations are becoming more stringent and the minimum by-pass flow requirements are generally increasing in North-America. Many of our small hydro technologies are perfectly suited for this type of application whether it is to replace an existing pressure reducing valve or implement a new turbine upstream of the by-passed reach of an existing hydro plant. Shown below is an example ...
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Procedure for the establishment of a small-hydro project
The objective here is to synthesize into three steps the various procedures that the designer (public or private) has to go through in order to succeed in a small-hydro project. We first of all strongly recommend measuring discharges as regularly as possible, at least once a week or, ideally, continuously, and to have a surveyor measure up- and downstream altitudes. A simple method of measuring ...
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Towards realising social sustainability in the small hydropower sector in India: opportunities for social innovations
This paper investigates the SHP sector in India and aims at finding out its contribution towards realising social sustainability and if there are any opportunities for generating social innovations. Various stakeholders connected to the SHP industry were interviewed in four states of India to explore the existing situation of this industry. The data was acquired through 28 individual in–depth ...
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Comparison of single phase self excited induction generator excitation configurations using the main and auxiliary windings for a micro hydro system
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 capacitor configurations are investigated. To use these generators effectively, the desired output should ...
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Complete Overhaul of unique hydro power plant Želina - Case Study
The small hydro power plant Želina built on Ohre river has been commissioned since1908 year and these days is being listed as technical heritage of the Czech Republic. Generating technology is still oparated by CEZ. Scope of Želina power plant works is complete overhaul and modernization of two Francis turbine units, installation of new intake trash racks, up-grading of trash raking machines and ...
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Control of dynamic effects in small hydro with long hydraulic circuits
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 behaviour of turbo-generators of small reaction turbines and the interaction with long hydraulic ...
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Small hydropower projects and sustainable energy development in Sri Lanka
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 Sustainomics framework is used to assess the role of small hydroelectric power projects in sustainable ...
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Voltage controlled stand-alone microhydro induction generator system
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 protecting the load from short circuit, which permits voltage collapse under heavy loads. WRSEIG is ...
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Techno-economics of micro-hydro power plants for remote villages in Uttaranchal in India
Results of a techno-economic feasibility evaluation of some micro-hydro power (MHP) plants being planned and implemented for remote village power supply in the state of Uttaranchal in India are presented. The capital cost of MHP plants in the capacity range of 20–100 kW (including cost of local transmission and distribution system), investment requirement per unit of rated capacity, and relative ...
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Grid Connection An open letter to those on grid considering pursuing hydro power
Many people contact us concerning the possibility of using a power source that is either connected to the commercial power grid or feeding power to a house that is. While this may be possible, it is not likely to make economic sense. Over 99% of our customers are off-grid and there are reasons for this. The question is then more like: ’Can I put in a small hydro system or should I spend ...
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The ABCs of small hydro upgrade and automation
Abstract - Small hydroelectric is increasingly depended on to provide regional power capacity, as municipalities seek more sustainable sources of energy. Yet, hydroelectric or hydro power has some negative perceptions. Other sustainable sources of energy like wind and solar power are early in their equipment and technology life cycles. Hydroelectric facilities are typically older and operate with ...
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Connecting to the Grid: A Letter from Paul
Dear potential grid connected customer, Many people contact us concerning the possibility of using a power source that is either connected to the commercial power grid or feeding power to a house that is. While this may be possible, it is not likely to make economic sense. Over 99% of our customers are off-grid and there are reasons for this. The question is then more like: ’Can I ...
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Anti-islanding protection and islanding operation of grid-connected hydropower distributed generation
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 understanding of these issues and finding solutions to these problems are timely and important to the ...
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Renewable energy programmes in India
With a strong industrial base and successful commercialisation of technologies in renewable energy, India is in a position today to offer state-of-the-art technology to other developing countries and is poised to play a leading role in the global movement towards sustainable energy development. India has a separate ministry to promote renewable energy sources, which has been named Ministry of ...
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Reactive power control of wind-diesel-micro-hydro hybrid power systems using matlab/simulink
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 different types of Static VAR Compensators (SVC). Transient responses for step plus normally distributed or ...
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Cumulative Watershed Impacts of Small-Scale Hydroelectric Projects in Irrigation Delivery Systems: A Case Study
The information and analysis in this case study provides basic background on small-scale hydropower projects located within irrigation water delivery systems; describes why the opportunity to develop these projects exists; identifies barriers to implementation; and discusses the environmental issues and concerns associated with these projects. Through examination of two existing small-scale ...
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