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Guideline and Manual for Hydropower Development Vol. 2 Small Scale Hydropower

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Guideline and Manual for Hydropower Development Vol. 2 Small Scale Hydropower Guideline and Manual for Hydropower Development Vol. 2 Small Scale Hydropower March 2011 Japan International Cooperation Agency Electric Power Development Co., Ltd. JP Design Co., Ltd. IDD JR 11-020 TABLE OF CONTENTS Part 1 Introduction on Small Scale Hydropower for Rural Electrification Chapter 1 Significance of Small Scale Hydropower Development ..................................... 1-1 Chapter 2 Objectives and Scope of Manual ......................................................................... 2-1 Chapter 3 Outline of Hydropower Generation ..................................................................... 3-1 Chapter 4 Rural Electrification Project by Small-Scale Hydropower ................................. 4-1 Part 2 Designation of the Area of Electrification Chapter 5 Selection of the Area of Electrification and Finding of the Site .......................... 5-1 Part 3 Investigation, Planning, Designing and Construction Chapter 6 Social Economic Research .................................................................................. 6-1 Chapter 7 Technical Survey ................................................................................................. 7-1 Chapter 8 Generation Plan ................................................................................................... 8-1 Chapter 9 Design of Civil Structures ................................................................................... 9-1 Chapter 10 Design of Electro-Mechanical Equipment .......................................................... 10-1 Chapter 11 Design of Distribution Facilities ......................................................................... 11-1 Chapter 12 Construction and Procurement ............................................................................ 12-1 Chapter 13 Construction Management .................................................................................. 13-1 Part 4 Management of Electric Utility Chapter 14 Management Body and Electricity Tariff ............................................................ 14-1 Chapter 15 Operation and Maintenance ................................................................................ 15-1 Chapter 16 Assistance in Management of Electrical Utility Services ................................... 16-1 Part 1 Introduction on Small Scale Hydropower for Rural Electrification TABLE OF CONTENTS Chapter 1 Significance of Small Scale Hydropower Development ................................. 1-1 Chapter 2 Objectives and Scope of Manual ...................................................................... 2-1 2.1 Objectives ................................................................................................................. 2-1 2.2 Definition of Small Scale Hydropower and Coverage of Manual ............................ 2-1 Chapter 3 Outline of Hydropower Generation ................................................................. 3-1 3.1 Energy of Hydropower ............................................................................................. 3-1 3.1.1 Hydro Power Generation .................................................................................. 3-1 3.1.2 Electric Power Output ....................................................................................... 3-2 3.1.3 Energy Generation ............................................................................................ 3-2 3.2 Types of Hydropower Plant ...................................................................................... 3-2 3.2.1 Classification from Viewpoint of Power Supply Capability ............................. 3-2 3.2.2 Classification by Method of Head Acquisition ................................................. 3-4 3.3 Development Pattern and Level of Electrification ................................................... 3-5 3.3.1 Relation between Electricity Demand and Level of Electrification .................. 3-5 3.3.2 Relation between Level of Electrification and Combination of Auxiliary Generating System ......................................................................................................... 3-6 Chapter 4 Rural Electrification Project by Small-Scale Hydropower ........................... 4-1 4.1 Development Flow ................................................................................................... 4-1 4.1.1 Preliminary Survey Stage.................................................................................. 4-3 4.1.2 Basic Plan Survey Stage ................................................................................... 4-3 4.1.3 Implementation Plan Stage ............................................................................... 4-5 4.1.4 Construction Stage ............................................................................................ 4-6 4.1.5 Operation and Maintenance Stage .................................................................... 4-7 4.2 Relationship between the Project and Local Community ........................................ 4-7 4.3 Development Scheme ............................................................................................... 4-9 4.3.1 Japanese Development Aid Program ................................................................ 4-9 4.3.2 Policy to Promote Rural Electrification ............................................................ 4-14 i LIST OF TABLES Table 3-1 Characteristics of Electricity Demand of the Rural Electrification ..................... 3-5 Table 3-2 Scale of Electrification and Combination of Auxiliary Generating System ........ 3-7 Table 4-1 Tasks During the Preliminary Survey Stages ...................................................... 4-3 Table 4-2 Tasks During the Basic Plan Survey Stage .......................................................... 4-3 Table 4-3 Tasks During the Implementation Plan Stage ..................................................... 4-5 Table 4-4 Tasks During the Construction Stage .................................................................. 4-6 Table 4-5 Tasks During the Operation and Maintenance Stage........................................... 4-7 Table 4-6 Relationship with Local Community .................................................................. 4-8 LIST OF FIGURES Figure 3-1 Schematic Figure of Water cycle ......................................................................... 3-1 Figure 3-2 Run-of-River Type .............................................................................................. 3-3 Figure 3-3 Pondage Type and Reservoir Type ...................................................................... 3-3 Figure 3-4 Dam and Waterway Type .................................................................................... 3-4 Figure 3-5 Secular Variations of Daily Load Curve .............................................................. 3-5 Figure 4-1 Standard Process of The Rural Electrification Project by Small-Scale Hydropower ......................................................................................................... 4-2 Figure 4-2 Japan's ODA Scheme .......................................................................................... 4-10 Figure 4-3 Implementation Flow of Grant Assistance .......................................................... 4-12 ii Chapter 1 Significance of Small Scale Hydropower Development Guideline and Manual for Hydropower Development Vol. 2 Small Scale Hydropower Chapter 1 Significance of Small Scale Hydropower Development (1) Contribution to rural electrification More than two billion people in the world, mostly in developing countries, are still living without benefit of electricity. For these people, access to electricity, even if limited in capacity, should improve the quality of life dramatically as a heat and light source. The daily life would be enriched, and the level of medical equipment and services as well as the safety of stored vaccines would be upgraded. In spite of an obvious need for the electrification in these regions, the majority cannot enjoy electricity because they live in localities which are away from the national power grid. High construction costs for the extension of transmission lines from the grid make the governments in developing countries unable to respond to the needs of the local people. Small scale hydropower can become an optimal distributed power source for the electrification of remote regions. Costs associated with the construction and operation of the plants and distribution lines can be reduced by having local organizations take responsibility for the small scale hydropower projects. And also improvement of livelihood and empowerment of the local people can be achieved by making use of hydropower which is stable energy and regional resource. (2) Global environmental issues Hydropower is a renewable energy which offers excellent advantages against the negative factors of environmental contaminants such as carbon dioxide (CO2) and other flue gases. With the increasing use of energy in recent years, the combustion of fossil fuels has resulted in an increasing volume of carbon dioxide causing urgent global warming and other environmental problems. The increase has also resulted in acid rain caused by gaseous pollutant (Sox & NOx) emissions into the atmosphere. In developing countries, wood and charcoal fuels are the major energy resources, resulting in deforestation, soil erosion and ever-advancing desertification. Under these circumstances, the development of
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