Batteries have limited life, usually showing a slow degradation of capacity until they reach 80 percent of their initial rating, followed by a comparatively rapid failure. Regardless of how or where a UPS is deployed, and what size it is, there are four primary factors that affect battery life: ambient
Year: 2014
A generating station which utilizes the potential energy of water at a high level for the generation of electrical energy is known as a hydroelectric power station. Hydro-electric power stations are generally located in hilly areas where dams can be built conveniently and large water reservoirs can be obtained. In
A modern steam power station is highly complex and has numerous equipment and auxiliaries. However, the most important constituents of a steam power station are: 1. Steam generating equipment2. Condenser3. Prime mover4. Water treatment plant5. Electrical equipment. 1. STEAM GENERATING EQUIPMENT: This is an important part of steam power station.
In order to achieve overall economy, the following points should be considered while selecting a site for a steam power station: (I) SUPPLY OF FUEL: The steam power station should be located near the coal mines so that transportation cost of fuel is minimum. However, if such a plant is
Steam power station simply involves the conversion of heat of coal combustion into electrical energy, it embraces many arrangements for proper working and efficiency. The schematic arrangement of a modern steam power station is shown in Figure. The whole arrangement can be divided into the following stages for the sake
A generating station which converts heat energy of coal combustion into electrical energy is known as a steam power station. A steam power station basically works on the Rankine cycle. Steam is produced in the boiler by utilizing the heat of coal combustion. The steam is then expanded in the
Bulk electric power is produced by special plants known as generating stations or power plants. A generating station essentially employs a prime mover coupled to an alternator for the production of electric power. The prime mover (e.g. steam turbine, water turbine etc.) converts energy from some other form into mechanical
That part of power system which distributes electric power for local use is known as distribution system. In general, the distribution system is the electrical system between the sub-station fed by the transmission system and the consumer’s meters. It generally consists of feeders, distributors and the service mains. Fig. 12.1
Cables are generally laid directly in the ground or in ducts in the underground distribution system. For this reason, there are little chances of faults in underground cables. However, if a fault does occur, it is difficult to locate and repair the fault because conductors are not visible. Nevertheless, the following
Thermal (coal, gas, nuclear) and hydro-generations are the main conventional methods of generation of Electrical Energy. These enjoy the advantages of reaching perfections in technologies for these processes. Further, single units rated at large power-outputs can be manufactured along with main components, auxiliaries and switch- gear due to vast experiences
