1 Introduction to Electricity Generation 1
1.1 History of the electricity generation industry 1
1.2 The evolution of electricity generation technologies 2
1.3 Pattern of demand 6
1.4 Categorisation of power stations 8
1.5 Types of power generation 9
2 Hydropower Projects 37
2.1 Hydropower 37
2.2 Advantages and disadvantages of hydropower project 43
2.3 Multi-purpose uses of hydropower project 43
2.4 Typical components of hydropower plants 44
2.5 Classifications of hydropower plants 46
2.6 Future development of hydropower in China 49
3 Dams and Water Passages 50
3.1 Dams 50
3.2 Open flumes 55
3.3 Penstocks 56
3.4 Surge tanks 58
3.5 Spiral cases and distributor assemblies 61
3.6 Draft tubes 63
3.7 Gates and valves 64
Exercise 69
4 Hydraulic Turbines 71
4.1 Introduction 71
4.2 Types of turbines 72
4.3 Hydraulic theory 81
4.4 Similarity laws 91
4.5 Turbine constans and empirical equations 96
Exercise 103
5 Turbine Selection and Plant Capacity Determination 107
5.1 Basic procedures 107
5.2 Limits of use of turbine types 110
5.3 Determination of the number of units 111
5.4 Selection of the most economical unit 112
Exercise 118
6 Cavitation 126
6.1 Cavitation 126
6.2 Selection of the turbine settings 133
Exercise 137
7 Electrical Equipment 141
7.1 Synchronous generators 141
7.2 Transformers 148
7.3 Excitation 149
7.4 Specifying generator equipment 151
7.5 Switching safety and electrical control equipment 151
7.6 Other equipment 153
8 Speed Regulation 155
8.1 Introduction 155
8.2 Water hammer 155
8.3 Pressure control systems 157
8.4 Speed control and governors 163
9 Powerhouses 172
9.1 Functions,types and components of powerhouse 172
9.2 Structure of powerhouse 184
9.3 Dimensions of main powerhouse 192
9.4 Auxiliary plant,transformer yard and switch station 193
10 Hydroplant Control System 196
10.1 The speed governing system 196
10.2 Hydroplant control system 199
10.3 Automatic generation control 205
New Words and Expressions 211
References 220