So the use of nozzle governing is limited to small turbines. In both the noncondensing and condensing type units, a single or double controlled extraction may be considered, depending on the number of openings that steam exits the turbine prior to the exhaust figure 6. Governing system of turbine free download as powerpoint presentation. The conditions in the design situation are the same for the different turbine control situations. Turbine governing the steam flow through the control valve is proportional to the valve opening in the. Copy of governing system of steam turbine by anuj sambhare. This condition will exist if the blade velocity is equal to one half of the steam velocity.
A handbook for power engineers kindle edition by atul bansode. Therefore, for good efficiency the blade velocity should be about one. The first steam turbine rail locomotive was built in 1908 for the officine meccaniche miani silvestri grodona comi, milan, italy. Governing of steam turbine is the procedure of controlling the flow rate of steam to a steam turbine so as to maintain the speed of the turbine fairly constant irrespective of load on the turbine. Directx, games for windows live redist, vc redist, rapture3d, nvidia physx redist, etc. When turbine works, some factors have reduced the output of the turbine, known as the losses in steam turbine or internal loss in the turbine. Ppt turbine governing system powerpoint presentation free to. In an extracting type turbine, steam is released from variousin an extracting type turbine, steam is released from various stages of the turbine, and used for industrial process needs or sentstages of the turbine, and used for industrial process needs or sent to boiler feed water heater to. Key global player in steam turbines industry with market leadership position in india, having over 60% market share. Steam power plant ppt steam power plant presentations.
Steam turbine plants generally have a history of achieving up to 95% availability and can operate for more than a year between shutdowns for maintenance and inspections. The file size of the latest setup package available for download is 872 kb. Gas turbine is an ignition engine which transforms natural gas or liquid fuels into automatic energy. As the torrent of water dried up for the first time in thousands of years. A typical turbine governing system has two unloaders one activated by low condenservacuum. But this loss can be minimized through some process. Unesco eolss sample chapters thermal power plants steam turbine components and systems r. Prior to supplying steam to the turbine, the steam supply pipelines have to be drained and heated up. Transfer function block of the steam turbine governing system.
When you installed a video game from a cd or a dvd, you installed some redistributable packages too. How does the steam turbine gland sealing system work. Their unplanned or forced outage rates are typically less than 2% or less than one week per year. Thus governing system changes the turbine mechanical power output. Two steam generators produce steam from the heat energy generated by the reactor to supply the turbine for the main steam system. In turbines there are basically 2 part one is called rotor and another is known as stator. If steam pressure decreases the steam flow rate and temperature are. Ge power has supplied 30% of the worlds steam turbine capacity. Tubine governing system is meant for regulation of turbine speed under no load and varying load conditions to regulate the steam control valve position and hence load generated to control initial runup and synchronisation of the machine why. Generally, an ebook can be downloaded in five minutes or less. This gives the advantage on throttle governing where the power reduction will happen gradually. Steam turbine governing system is a method, used to maintain a constant steady speed of turbine. Explicit animations and graphics describing every aspect like turbine types, working principle, components, woodward type governors, speed droop, hunting, etc. Using matlabsimulink software facilities, have been simulated the speed variations, of the steam turbineload unit, connected with a mechanicalhydraulic system, than the speed deviations of the.
The most popular versions among turbine steamconsumption calculator users are 2. The importance of this method is, the turbine can maintain a. Steam turbine software free download steam turbine. Steam turbine training and governing system training. Kwu steam turbine governing system steam turbine x 4 mw htps governing system presentation. Steam turbine governing systems and electronic governor retrofit 159 process is required at a specific pressure below the inlet pressure. Steam turbine losses in steam turbine mechanicaltutorial.
Steam turbine training and governing system training youtube. In 1924 krupp built the steam turbine locomotive t18 001, operational in. Rotor means which part rotate and stator means which part is fixed. The power system transient terminal voltage and frequency stability enhancement have been well. Steam turbines are widely used for chp applications in the u. See more ideas about steam turbine, abandoned factory and industrial photography. The flow rate of steam is monitored and controlled by interposing valves between the boiler and the turbine. The variation in load during the operation of a steam turbine can have a significant impact on its performance. The electronic governor may also improve plant production from driven equipment through enhanced steam management while providing realtime data on. Steam turbine control valve, governing and lube oil system. The governing systems for thermal and hydro generating plants are.
Nozzle is the stator part of turbine means it is fixed part. The first is throttling governing which controls the system by changing turbine inlet pressure. The turbine is operational since 1968, therefore an efficiency assessment can highlight its present technical condition. For understanding the gland sealing system first we have to understand why it is. Operation and maintenance schedule of a steam turbine. Download it once and read it on your kindle device, pc. Governing system is required to ensure that the system demand is followed automatically without large deviation in the nominal electric frequency the main purpose of the governing system is to maintain. Then a steam turbine with a governing stage will be modelled. Modern large steam turbine plants over 500mw have efficiencies of about 4045%. Nonlinear maximum power point tracking control and modal. Gland steam must have appropriate temperature and pressure which must be controlled during startup. Governing system is an important control system in the power plant as it regulates the turbine speed, power and participates in the grid frequency regulation. Issn 2348 7968 it2flc based control model of steam. Simultaneously, gland steam system is started to prevent air inleakage.
Upgrade your steam turbine governor with a modern electronic governing system for improved reliability, control, and accuracy. Interval type2 fuzzy based model of steam turbine governing system of power plant is proposed. In order to maintain the synchronous speed under changing loadgrid or steam conditions, the kwu turbine supplied by bhel at ntpc korba. The typical main turbine in nuclear power plants, in which steam expands from pressures about 6 mpa to pressures about 0. Efficiency will depend on turbine size or rotor diameter, blade geometries, speed, extreme condition of steam and other losses. Video using steam turbine training and governing system training software. The above picture is just a screen shot, click to see demo. A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion.
The best companion of steam users the good old time. A steam turbine locomotive engine is a steam locomotive driven by a steam turbine. The importance of this method is, the turbine can maintain a constant steady speed irrespective of variation of its load. The steam turbine and governor block implements a complete tandem compound steam prime mover, including a speed governing system, a fourstage steam. In order for the steam to give up all its kinetic energy to the moving blades in an impulse turbine, it should leave the blades at zero absolute velocity.
Model the dynamics of speed governing system, steam turbine, and. Steam consumption of steam turbine is depending to required output power and efficiency of the turbine. Pdf simulation of speed steam turbine control system. Types of governing systems used in thermal power plant. Steam turbine training governing system training course. Steam turbine governing steam turbine governing is the procedure of controlling the flow rate of steam into a steam turbine so as to maintain its speed of rotation as constant. Unesco eolss sample chapters thermal power plants vol.
Ppt turbine governing system powerpoint presentation. Though there are several losses in a turbine, but here we will discuss some important internal losses in the turbine. Steam turbines, whether small scale or heavyduty, are crucial for efficient power plants. General industrial steam turbine prefers a steam source of 42 kgcm2 600 psi at 482 oc 900 o f. Steam turbine governing is the procedure of monitoring and controlling the flow rate of steam into the turbine with the objective of maintaining its speed of rotation as constant. Steam turbine, energy performance, efficiency assessment, heat balance 1 introduction the steam turbine converts the thermal energy of pressurized steam into useful mechanical work. They were installed from the cddvd, and those installers didnt stay on your hard drive. The turbine output is controlled by varying the steam flow by means of throttling valves of the turbine.
Steam turbines are one of the most versatile and oldest prime mover technologies still in general production used to drive a generator or mechanical machinery. Pdf nonlinear synergetic governor controllers for steam turbine. Ppt steam turbine governing system powerpoint presentation. Steam turbine, free steam turbine software downloads. Steam turbine governing is the procedure of controlling the flow rate of steam to a steam turbine so as to maintain its speed of rotation as constant. The blades thus convert most of the steams potential energy into kinetic energy. As the name implies, a steam turbine is powered by steam. An electronic governor can provide precise speed control with fewer wearing parts than an equivalent mechanical governor. In case of turbines with cooling water preheating and lowpressure lp. The modern digital turbine control system tcs is designed to control the main steam flow to the steam turbine in all operational conditions by means of the turbine throttle, governor, admission. This system generates electricity by using the main steam system to drive a turbine generator unit. Steam turbine training course with governor system and. Chaplin encyclopedia of life support systems eolss both of these have double casings with the exhaust steam circulating in the annular space between the casings as in the case of the high pressure turbine. In nozzle governing method, there will not be any importance to the steam inlet pressure and it is done by the boiler and bypass pressure control system.
Turbine speed governing system plz use speakers youtube. Unlike gas turbine and reciprocating engine chp systems where heat is a byproduct of power generation, steam turbines normally generate electricity as a byproduct of heat steam. Chaplin encyclopedia of life support systems eolss there is a loss in stage efficiency at the rate of about 1% for each 1% moisture content. As hot, gaseous steam flows past the turbine spinning blades, steam expands and cools, giving off most of the energy it contains. Powerpoint tips and tricks for business presentations. When a thermal power plant runs the electrical power developed is fed to the load.
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