Steam turbines turbine generator unit

The evolution of steam turbine power generation in the United States. 

The plant is designed to produce electricity from a turbine generator unit using steam generated in the reactor. 

According to the design concept, the UNITHERM can be used as a source of energy for the generation of electricity, district heating, seawater desalination and process steam production either in a complex or to meet specific demands. The purpose of the NPP would impact not only the mix of components but may also determine the characteristics of the reactor [II-5]. For instance, the use of steam at low parameters for district heating and potable water production allows the application of a turbine generator unit operated at backpressure. This sufficiently increases total plant efficiency and allows the use of the thermal siphon as an... 

Power can be generated with several types of steam turbines, gas turbines (units 12, 27 and 30). Electrical generators can be driven by steam turbines or gas turbines. 

The flow of main steam entering the high-pressure turbine is controlled by four control valves. The turbine control valves are adjusted automatically by electrohydraulic servo actuators. These actuators control the turbine speed when it is starting up, and for load control after the turbine-generator unit is synchronised. In series with each control valve is a stop valve, whose function is to shut off and isolate the steam flow to the turbine when required. 

Each power unit includes a reactor unit, a steam turbine, a generator and a modular step-up transformer. It is proposed to use a 300 MW power generator of the TZV-320-2UZ type with complete water cooling developed by the Elektrosila (Sankt-Peterburg). 

In apphcation to electric utihty power generation, MHD is combined with steam (qv) power generation, as shown in Figure 2. The MHD generator is used as a topping unit to the steam bottoming plant. From a thermodynamic point of view, the system is a combined cycle. The MHD generator operates in a Brayton cycle, similar to a gas turbine the steam plant operates in a conventional Rankine cycle (11). 

Steam turbines are divided into two broad categories those used for generating electric power and general-purpose units used for driving pumps, compressors, etc., and frequently called mechanical-drive turbines. 

Injection of Water or Steam at the Gas Turbine Compressor Exit. Steam injection or water injection has been often used to augment the power generated from the turbine as seen in Figure 2-42. Steam can be generated from the exhaust gases of the gas turbine. The HRSG for such a unit is very elementary as the pressures are low. This technique augments power and also increases the turbine efficiency. The amount of steam is limited to about... 

Steam, gas and hydraulic turbines, and turbine generator set units... 

In the United States the early decades of the new centuiy were dominated by ever-increasing size steam-turbine generators with capacities that reached over a thousand megawatts, and transmission voltages (the highest ones now often dc) above 700,000 volts. But after mid-centnrv these economies of... 

The amount of heat input, measured in British thermal units (Btu s), needed to generate a kilowatt hour of electricity with steam turbines decreased by almost 40 percent between 1925 and 1945, and by 35 percent during the period 1945 to 1965. During this period, scale became an important factor in power... 

Parsons adopted this multistage design to reduce turbine operating speeds to a useful level. His initial turbine was developed to produce electricity onboard ships and had an output of about 7 kW. In 1888 he designed the first steam turbine generating unit for public utility sei-vicc. By the time of his death in 1931, his company manufactured turbines generating more than. 30,000 kW. 

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