The turbine drives the alternator coupled with it and converts mechanical energy into electrical energy. In a thermal or nuclear power plant the steam turbine is put on turning gear for about two days during start-up and shut-down. The level of the water surface in the reservoir is called the Headwater level. Penstock is provided with a gate valve at the inlet to completely close the water supply. Producing electricity for towns, industries, schools, hospitals etc. From the dam, water is fed to a water turbine. 3. Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. 10. Penstock is provided with a gate valve at the inlet to completely close the water supply. Strong public opinion against. Water passes through turbines to produce work and downstream its utility remains undiminished for irrigation of farms and quenching the thirst of people in the vicinity. the purpose of the dam is to store the water and to regulate the out going flow of water. The emphasis is now more on small, mini and micro hydel stations. 1. Hydroelectric power plant Working principle. Hydropower is the most efficient and convenient method of electricity generation. 2. Hydroelectricity is the most widely used form of renewable energy. Hydro plants comprise the reservoir with a dam, penstock, turbine, generator , and transmission lines. In thermal stations, besides the cost of fuel, one has to take into account the transportation cost of the fuel also. 8. Slip-way: Due to heavy rainfall in the catchment area, the water level may exceed the storage capacity of the reservoir. It is aptly termed as ‘the white coal’. The water held in the tailrace is called the Tailrace water level. Required fields are marked *. The results are the same. Water turbines: It works as an energy conversion device. Application of Hydroelectric power plant: Hydro Plants are the most widely used (18-20 percent global electricity consumption) form of renewable sources of energy according to a survey. The water source is perennially available. Dam: A dam is a barrier that stores water and creates a water head. The turbine is installed at a lower level from the dam. The dam helps to store all the incoming water. It is located near the beginning of the conduit. Catchment area gets its water from rains and streams. Introduction to Seals : 2. Reservoir: It is an integral part of the power plant, where water is stored and supplied to a water turbine continuously. Modern hydro-generators give high efficiency over a considerable range of load. This can be compared with an effective life of about 30 years of a thermal or nuclear station. In thermal stations, besides the cost of fuel, one has to take into account the transportation cost of the fuel also. link to Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application, link to Slotter Machine - Types, Parts, Operations, Diagram, Specification. Working principle of hydroelectric power plant depends on the conversion of hydraulic energy into electrical energy. Hydro-power projects are capital-intensive with a low rate of return. Impulse turbines: Such turbines are used for high water heads. This structure is known as slip-way. The kinetic energy of the water is then converted into mechanical energy in a water turbine. Pelton wheel turbine is the prime mover used. The step-up transformer increases the voltage of the current coming from the stator. The hydraulic turbine can be switched on and off in a very short time. 1. In hydroelectric power station the kinetic energy developed due to gravity in a falling water from higher to lower head is utilised to rotate a turbine to produce electricity.