POWERPLANTS
Draw this diagram.
1. Powerstation – has large diesel generators that supply 3-phase voltage at 11000V or 11kV.
2. The supply from the generator goes to the generator transformer and switchgear.
3. From the switchgear, the 11kV is sent to the different parts of the island using wooden lamp posts.
4. Substations – these are situated at various points on the island, and contain high voltage switchgear and transformers.
5. 3-Phase Users/Consumers(3 or 4-wires) – these buildings use 3-phase voltages at 440V or 220V. e.g. Lutron, Kajola, Staff Room building at CHS.
6. Houses and Small Power Users – these use single-phase neutral (2-wires) voltage supply.
Principle Sources of Primary Energy Used for Generation of Electricity.
1. Diesel Power Plant - an electrical installation equipped with one or several electric current generators driven by diesel engines. The advantages of a diesel power plant are favorable economy of operation, stable operating characteristics, and an easy and quick start-up. The main disadvantage is the comparatively short interval between major repairs. Diesel power plants are used mainly for servicing areas distant from transmission lines or areas where sources of water supply are limited and where the construction of a steam power plant or of a hydroelectric power plant is not possible.
2. Biogas Power Plant - Biomass is used for facility heating, electric power generation, and combined heat and power. The term biomass encompasses a large variety of materials, including wood from various sources, agricultural residues, and animal and human waste. See Video
3. Hydroelectric Power Plant - The mechanical energy of moving water is transferred by a rotating turbine to a generator, where it is converted to electric energy and conveyed along transmission lines. See video.
4. A fossil-fuel power station - is a type of power station that burns fossil fuels such as coal, natural gas or petroleum (oil) to produce electricity. They have rotating machinery to convert the heat energy of burning into mechanical energy, which then operates an electrical generator. The prime mover may be a steam turbine, a gas turbine or a reciprocating internal combustion engine.
Alternative Sources of Primary Energy Used for Generation of Electricity.
1. Biogas Power Plant - Biomass is used for electric power generation. The term biomass include a large variety of materials, including wood from various sources, agricultural residues, and animal and human waste. Biomass can be converted into electric power through direct burning of biomass material, such as agricultural waste or woody materials. See video
2. Solar Power - is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current using the photoelectric effect. See video
3. Wind Power - is the conversion of wind energy into electricity by using wind turbines to make electricity…windmills for mechanical power, wind pumps for water pumping or drainage, or sails to propel ships. See video
4. Geo-Thermal Power - is electricity generated from geothermal energy. Technologies in use include dry steam power plants, flash steam power plants and binary cycle power plants. See video
1. Powerstation – has large diesel generators that supply 3-phase voltage at 11000V or 11kV.
2. The supply from the generator goes to the generator transformer and switchgear.
3. From the switchgear, the 11kV is sent to the different parts of the island using wooden lamp posts.
4. Substations – these are situated at various points on the island, and contain high voltage switchgear and transformers.
5. 3-Phase Users/Consumers(3 or 4-wires) – these buildings use 3-phase voltages at 440V or 220V. e.g. Lutron, Kajola, Staff Room building at CHS.
6. Houses and Small Power Users – these use single-phase neutral (2-wires) voltage supply.
Principle Sources of Primary Energy Used for Generation of Electricity.
1. Diesel Power Plant - an electrical installation equipped with one or several electric current generators driven by diesel engines. The advantages of a diesel power plant are favorable economy of operation, stable operating characteristics, and an easy and quick start-up. The main disadvantage is the comparatively short interval between major repairs. Diesel power plants are used mainly for servicing areas distant from transmission lines or areas where sources of water supply are limited and where the construction of a steam power plant or of a hydroelectric power plant is not possible.
2. Biogas Power Plant - Biomass is used for facility heating, electric power generation, and combined heat and power. The term biomass encompasses a large variety of materials, including wood from various sources, agricultural residues, and animal and human waste. See Video
3. Hydroelectric Power Plant - The mechanical energy of moving water is transferred by a rotating turbine to a generator, where it is converted to electric energy and conveyed along transmission lines. See video.
4. A fossil-fuel power station - is a type of power station that burns fossil fuels such as coal, natural gas or petroleum (oil) to produce electricity. They have rotating machinery to convert the heat energy of burning into mechanical energy, which then operates an electrical generator. The prime mover may be a steam turbine, a gas turbine or a reciprocating internal combustion engine.
Alternative Sources of Primary Energy Used for Generation of Electricity.
1. Biogas Power Plant - Biomass is used for electric power generation. The term biomass include a large variety of materials, including wood from various sources, agricultural residues, and animal and human waste. Biomass can be converted into electric power through direct burning of biomass material, such as agricultural waste or woody materials. See video
2. Solar Power - is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current using the photoelectric effect. See video
3. Wind Power - is the conversion of wind energy into electricity by using wind turbines to make electricity…windmills for mechanical power, wind pumps for water pumping or drainage, or sails to propel ships. See video
4. Geo-Thermal Power - is electricity generated from geothermal energy. Technologies in use include dry steam power plants, flash steam power plants and binary cycle power plants. See video