Find powerpoint presentations and slides using the power of, find free presentations research about steam turbine ppt. Please support us at so that we can add one more member to the team and will be able to release 2 educational videosmonth. Issn 2348 7968 it2flc based control model of steam turbine. Issn 2348 7968 it2flc based control model of steam.
This is a presentation on 500mw steam turbine governing system using electrohydraulic control. The electronic governor may also improve plant production from driven equipment through enhanced steam management while providing realtime data on. When the friction resistance increased to a certain degree, seizure of moving parts may take place, posing a serious threat to the safety of the. Pdf steam turbine find, read and cite all the research you need on. The typical main turbine in nuclear power plants, in which steam expands from pressures about 6 mpa to pressures about 0. The steam turbine unlike the reciprocating steam engine which operates due to the pressure energy of system operates due to dynamic action of the steam. The steam turbine and governor block implements a complete tandemcompound steam prime mover, including a speed governing system, a fourstage steam turbine, and a shaft with up to four masses. The acceleration, which may be a change in either magnitude or direction of a stream of fluid, produces a turning moment on a rotating shaft. The steam turbine working principle and theory has been explained in. Thus governing system changes the turbine mechanical power output.
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 first step toward safe governing steam turbines is. Pdf simulation of speed steam turbine control system. The turbine control system developed for kwu steam turbine meets the demand of precise control with high response and safety. Elec0047 power system dynamics, control and stability. The governor is a control component with advanced protections for the turbine which ensure safe operation of the turbine. The foregoing can lead to a system limit ring oscillation. Converts electrical govedning to hydraulic signal 2. There are many considerations to be taken when choosing a controller. An electronic governor can provide precise speed control with fewer wearing parts than an equivalent mechanical governor. There have been numerous causes of steam turbine failures worldwide. A typical turbine governing system has two unloaders one activated by low condenservacuum. Steam turbine, governing system control, interval type2 fuzzy logic controller, foot print of uncertainty, internal generator angle, pid controller. Turbinegovernor models standard dynamic turbinegovernor systems in neplan power system analysis tool.
A highvelocity steam is coming from the nozzles and it strikes the rotating blades which are fitted on a disc mounted on a shaft. In the usual speedgoverning system for such plant a governor on the output turbine controls a throttle in the fuel supply to the heating system. Steam turbine and its governing free download as word doc. Governing system steam turbine pdf ylyx9w967vnm idocpub. The conditions in the design situation are the same for the different turbine control situations. The governor does this function by controlling the steam flow through the turbine by adjusting the control value. Turbine governing system filed april 25, 194e 2 simmssheet 2. That animatiom contain dtailed functioning of the followings. Jul 29, 2017 alstom hydro turbine speed governing system power alstom hydro, the worlds hydropower market leader, act s as a pl ant integrator, providing both com plete power plant solutions and separ ate products from the overall range, in response to specifc customer needs. Keywords steam turbine, governing system control, interval type2 fuzzy logic controller, foot print of uncertainty, internal generator angle, pid controller.
Then a steam turbine with a governing stage will be modelled. The various turbine types have been explained in detail. Governing system of gas turbine free download as powerpoint presentation. In its simplest form, a steam turbine consist of a boiler steam generator, turbine, condenser, feed pump and a variety of auxiliary devices. Key features precise speed governing digital governor functions are fully integrated with generator control functions dual redundant mpu inputs automatic turbine start sequence comprehensive actuator interface support incl.
Theacti vatedunloader acts similarly to the loadlimiter, ie. Alstom hydro turbine speed governing system power alstom hydro, the worlds hydropower market leader, act s as a pl ant integrator, providing both com plete power plant solutions and separ ate products from the overall range, in response to specifc customer needs. Model the dynamics of speed governing system, steam. Jun 16, 2014 turbine governing system an overview 1. Following figures show steam process in steam turbine. Jun 04, 2019 kwu steam turbine governing system steam turbine x 4 mw htps governing system presentation. The optimal steam pressure of thermal power plant in a. Keywords steam turbine, governing system control, interval type2 fuzzy logic controller, foot print of uncertainty. In case of turbines with cooling water preheating and lowpressure lp. Steam turbine training governing system training course. Salent features of mw kwu turbine governing system kwu mw turbine is a throttle governed machine.
All the cimcgmes regulators models are included in neplan power system analysis tools. Governor is a heart component of the turbine which controls it during steady state and transient conditions. Simultaneously, gland steam system is started to prevent air inleakage. Kwu steam turbine governing system steam turbine x 4 mw htps governing system presentation. Steam turbine governing and its mechanism ece tutorials. Approval issue module 2347 the turbine governing system. Steam turbine controls heinzmann australia steam turbine controls comprise of the following features. Prior to supplying steam to the turbine, the steam supply pipelines have to be drained and heated up. The heating system is usually a combustion system wherein fuel is burnt in the air and the hot gas usually flows through the compressordriving turbine and the output turbine in series. Steam turbines startups 1 principles of steam turbines startups. 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.
In order to maintain the synchronous speed under changing loadgrid or steam conditions, the kwu turbine supplied by bhel at ntpc korba. Working principle of steam turbine depends on the dynamic action of steam. The use of a relay system magnifies the small deflections of the lever. Steam turbine governing is the procedure of controlling the flow rate of steam to a steam turbine. 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. Efficiency will depend on turbine size or rotor diameter, blade geometries, speed, extreme condition of steam and other losses.
Figure 4 shows steam process in enthalpy against entropy diagram of curtis and single row rateau turbine. What is steam turbine description and characteristics. View and download powerpoint presentations on steam turbine ppt. A study of response characteristics of a steam turbine. It covers the governing system and includes working of the woodward governor type. The flow rate of steam is monitored and controlled by interposing valves between the boiler and the turbine. Peak load plants the plants used to supply the peak load of the system corresponding to the load curve are called peak load plants. Another object is to provide a turbine governing system having a load limiting device with underspeed release means, which is insensitive to vibration and erratic action or bobble of the turbine speed governor, yet is extremely sensitive to changes in turbinespeed. In the usual speed governing system for such plant a governor on the output turbine controls a throttle in the fuel supply to the heating system. Steam turbine control systems are being designed with todays technology to operate a turbine in a safe and reliable manner. Normally, governor or governing system is having problem if speed fluctuation occurs in the steam turbine at constant compressor load because governor is. The methods used for governing the steam turbines are. Steam turbine working principle and types of steam turbine.
Due to component wear, working oil related pollution and ingress of foreign matter there may emerge cases of friction and an enlarged clearance in the governing system of a steam turbine. Mar 08, 2020 steam turbine governing system download as powerpoint presentation. Model the dynamics of speed governing system, steam turbine. The steam turbine training course has been developed to assist in turbine maintenance and turbine operation. The importance of this method is, the turbine can maintain a constant steady speed irrespective of variation of its load. Introduction 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. Turbine governing systeman overview free download as powerpoint presentation. In general, a steam turbine is a rotary heat engine that converts thermal energy contained in the steam to mechanical energy or to electrical energy.
Basic aspects of steam turbine maintenance page 1029. Governing system of gas turbine control theory throttle. Only one governor can be selected at a time through the process of hydraulic minimum selection. The above picture is just a screen shot, click to see demo. 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. Steam process in steam turbine steam entrance to turbine through governor valv e to control steam capacity and therefore to control turbine speed. Steam turbine governing gas technologies mechanical. This pdf explains in details about the different types of governing systems being used in gas turbines. The cbt also covers steam turbines and the governing system in detail and includes woodwardtype governor operation.
Ap1 sponsored events and has been involved with the rewriting of a number of ap1 documents. The speed governing system consists of a proportional regulator, a speed relay, and a servomotor controlling the gate opening. View 104773573kwusteamturbinegovampprotectionsystem. An experiment set up of power system governing system was built and used to verify the performance of it2flc controller. This file format is generated from a complete amination. Maintenance and overhaul of steam turbines wgp42 05. Therefore, in combination with the theory of variable condition of turbine, calculation of governing stage and the matrix equation of thermal power system, an optimization method were put forward and an optimal solution was got in a given load. Steam turbine governing system download as powerpoint presentation. Space between guide vanes will increase in one direction of rotation of regulating ring and space will decrease in its opposite direction of rotation. Steam turbine governing systems and electronic governor retrofit by josephs. Governing system of the turbine does the following functions. Regulates steam flow in the turbine secondary oil circuit 2. Steam turbine governing system is a method, used to maintain a constant steady speed of turbine.
Steam consumption of steam turbine is depending to required output power and efficiency of the turbine. Pdf power plant lecture notes chapter4 steam turbine. Space between guide vanes will increase in one direction of rotation of regulating ring. Mar 31, 2017 please support us at so that we can add one more member to the team and will be able to release 2 educational videosmonth. The variation in load during the operation of a steam turbine can have a significant impact on its performance. The use of a relay system magnifies the small deflections of the lever connected to the governor sleeve. The optimal steam pressure of thermal power plant in a given load. The steam turbine training and governing system training course covers the various turbine types and provides detailed classifications. Definition of governing system types of governor what is a. Turbine governing the steam flow through the control valve is proportional to the. 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. Gland steam must have appropriate temperature and pressure which must be controlled during startup. This highvelocity steam produces dynamic pressure on the blades in which blades and shaft both start to rotate in the same direction.
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