Turbine generator system

A wide variety of turbine types and arrangements are used in modem power plants. For example, some smaH industrial plants may use only a single condensing turbine. Prepackaged steam/turbine generator systems can be economical for small-to-midsize instaHations. 

Windows, with tunable optical properties, 23 25. See also Smart windows WindStor system, 25 526 Wind-turbine-generator system electricity produced by, 26 94 Wine Aroma Wheel, 26 325 Wine, 26 295-332, 3 561-562... 

Siemens Westinghouse is advanced in its pursuit of gas turbine integration. High-temperature depleted air and unused fuel from the fuel cell cannot be discarded, and are best used in a gas turbine, as outlined in Baozhen Li etal. (2001), the Siemens patent for a Single Module Pressurised Fuel Cell Turbine Generator System (pp. 974-979). The effect... 

George R A etal, 2001, Single Module Pressurised Fuel Cell Turbine Generator System. US Patent (pending), WO 01/06589 Al. 

The basic control system of most gas turbine generator systems is shown in Figure 2.13. 

The second heat removal system is an independent cooling system (ICS), which includes, besides a part of primary and secondary circuit equipment, a loop separator-cooling condenser with natural circulation. Via this loop the heat is removed to the intermediate circuit water. This system ensures independent (from the turbine generator systems) reactor cooling and independent reactor plant operation at a constant power level up to 6 % N om at the nominal steam pressure. In case of total RI de-energizig the system ensures cooling of the reactor over several days. Connection/disconnection of ICS is realized with no operator action and without using external power supply systems. 

To increase the power to 20% of the rated power to start the turbine generator system, the reflector is periodically lifted up at a speed of 1mm per 15 minutes in automatic mode. Periodic operation is needed to stabilize the system heat balance. At the same time, the pressure of the water steam separation tank is decreased to generate steam and to reduce the re-circulation flow. After this, the power is increased to fiill power by lifting up the reflectors and increasing the feed water flow. 

In the case of plants located deep in rock, the studies and the solutions implemented follow either one of the following two possibilities location of the turbine-generator system at depth close to the reactor cavern or location of this system on the surface. Indeed, the turbine-generator system is less vital to safety than the reactor, the auxiliary building and the fuel building. Figure 21-2 shows the layout of the cavern power station SENA with the turbine-generator plant located on the surface. 

The Nuclear Steam Supply System (NSSS) of 4S is attached to one turbine generator system, which is intended to be compact insize and to be a simple system. 

To convert the thermal power generated by the nuclear reactor or solar collector into electric power, the turbo-electric method is closest to application. This method is the one most commonly used in ground power stations, and consists in using the basic energy source to heat a working fluid, which drives a turbine-generator system. The basic difference between ground and space power... 

The turbine generator system comprises steam turbines directly coupled to an alternating current (AC) electrical generator operating at S5mchronous speed. 

The primary coolant circuit was wholly contained within the PCRV with the core and reflectors located in the upper part of the cavity and the steam generators and circulators located in the lower part. The helium coolant flowed downward through the reactor core and was then directed into the reheater, superheater, evaporator, and economizer sections of the 12 steam generators. From the steam generators, the helium entered the four circulators and was pumped up around the outside of the core support floor and the core barrel before entering the plenum above the core. The superheated and reheated steam was converted to electricity in a conventional steam cycle power conversion turbine-generator system. 

Combinations of these systems and the turbine generator system as balance of plant (BOP), including the capacity of each system, would be determined to meet the actual needs at each site. 

In its present design, the 4S-LMR provides for the use of a standard turbine generator system innovative turbine generator designs may be incorporated once developed. 

The turbine generator system is shown in Fig. XXVI-9, Standard Rankine cycle with a single feedwater reheater is used for generation / co-generation of electricity. The pressure of steam-water coolant in the secondary circuit is 7 MPa. Steam from the steam generator located inside the reactor vessel is directed to the turbine to produce electricity and can also be directed to a desalination plant for the production of potable water. Steam from the turbine is condensed to water by using seawater as an ultimate heat sink in normal operation. The water from the condenser is mixed with the feedwater to be pumped to the SG inlet through an orifice block. 

The HGP, owned by the Supply System, received steam via the steam piping system from the N Reactor. The HGP consists of two 430-MW (electrical) low-pressure turbine generator systems with associated auxiliary equipment normally found in a steam power station. The HGP is operated by the Supply System. The HGP condensers and auxiliary cooling systems were supplied by raw water pumped from the Columbia River and discharged back to the river approximately 90 m (300 ft) upstream from the N Reactor raw water intake structure. 

The SMART and MED-TVC units are connected through the steam transformer. The steam transformer produces the motive steam using steam extracted from a turbine and supplies it to the desalination plant. It also prevents the contamination of water produced by hydrazine and radioactive material of the primary steam. More details about the turbine generator systems can be found in [1-21]. 

Conventional equipment for the BWR will be used in the turbine generator system. 

Power conversion system. HTR-PM uses conventional steam turbine generator systems for power conversion. These are totally mature technologies. 

He, Y. and Chen, X. 2009. Wind turbine generator systems. The supply chain in China status and problems. Renewable Energy, 34, 2892-2897. 

Wind-turbine generator towers are frequendy struck by lightning, hi order to optimize ways to protect wind-turbine generator systems from lightning, it is important to know the mechanism of lightning overvoltages generated in the systems. 

D view of a 3/100-scale model of a wind-turbine generator tower, blades, nacelle, current lead wire, and a voltage reference wire. (Reprinted from Yamamoto, K., A study of overvoltages caused by lightning strokes to a wind turbine generation system, PhD thesis, Doshisha University, Kyoto, Japan, 2007. With permission.)... 

Yamamoto, K. 2007. A study of overvoltages caused by lightning strokes to a wind turbine generation system. PhD thesis, Doshisha University, Kyoto, Japan (in Japanese). 

Yamamoto, K., T. Noda, S. Yokoyama, and A. Ametani. 2009. Experimental and analytical studies of lightning overvoltages in wind turbine generator systems. Elec. Power Syst. Res. 79(3) 436-442. 

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