It is necessary for the Power load operators and regulators to manage distribution services efficiently to maintain reliability of the power system.
Frequency regulation is one of the distribution services to be supplied by the electricity market participants. The only way to regulate frequency is to maintain the balance between demand and supply in real time.

In India, it is achieved through a regulatory approach. In this Paper, an investigation is made on Free Governor Mode of Operation to demonstrate Frequency Regulation by adopting Free Governor Mode of Operation.

Simulation is a powerful technique used to predict the performance or analyze the
behavior of any closed loop control system. It is also used to tune the controller gains or to design a control system. Development of mathematical model is the first step in the simulation study. Matlab and Simulink of Mathworks Inc. are widely used in the academic and industrial world. A simple model of a speed governing system of the steam turbine is taken for illustrating the dynamic simulation.

The developing countries have sustained power shortage problems compared to developed countries for many reasons, mostly financial in nature. The developed
countries have to address the power deficient areas occasionally. The research literature on operation of generation deficient power system is scanty.

The problems faced by developing countries are fundamentally of different nature. The developing countries have to search for alternatives to suit their requirement. The deficient systems have typical features like frequency deviations, abrupt arising of deficiencies of power, low voltages and lack of coordination among the
constituents under a region due to indiscipline.

In India speed governors have been prevented from responding by the utilities, with dead band configuring from 47.5 Hz to 51.5 Hz. Emergency unloading of a unit is available only when frequency reaches 51.5 Hz. As a consequence excursions in frequency are common up to 1 Hz in a time block of 15 minutes. For the sake of better control efforts are being made to enable the frequency governors to respond to entire range of frequency. This is called free governor mode of operation (FGMO)

The Governor is an important controller in the power plant as it regulates the turbine speed, power and participates in the grid frequency regulation. It is the main operator interface
a) To start the turbine from still condition,
b) To vary the load on the turbo-generator when it is on bars (Synchronized) and
c) To protect the turbine from damages in the cases of any unsafe operating conditions.

The steady state and dynamic response behavior of the turbine is influenced mainly by the characteristics of the Governing system.

Need for the Governing System
The load on the turbo-generator does not remain constant but vary as per the consumer (Grid) demand requirements. The presence of a perpetual mismatch between the
generation and the demand in a larger network results into variations in frequency and necessitates a continuous adjustment of generation at the turbo-generators.

If not, the speed / frequency will be oscillating which is an indication of poor power quality. A state of unchanging system frequency and zero acceleration indicates that the generation meets the system demand. The governing system provides for this regulation /adjustment, when the turbo-generator is on bars, by controlling the steam inflow to the turbine.

The regulation is envisaged by various control logics and by operating the control valves in the turbine. Stop valves provided in the governing system protect the turbine in case of unsafe conditions by blocking the steam flow into the turbine.

How Governing System Works
The Speed / Power of the steam turbine are controlled by varying the steam flow to the turbine, which in turn is valve is operated by a servomotor driven by a hydraulic
signal. The governing system is a closed loop control system which processes speed error, power error and pressure error to operate the steam control valves.

In a Mechanical Hydraulic governing system,mechanical speed sensors viz., fly balls and hydraulic speed transmitters to sense the speed and hydraulic servomotors and hydraulic amplifiers to drive the final control elements (i.e.) control valves are employed.

In an Electro Hydraulic governing system, Halls probe or pulse generators to sense the speed, various logics and control circuits to process the error and electro
hydraulic converters / amplifiers and a hydraulic actuator to drive the control valves are used.

To be continue to


37 responses to "Turbine Governing System"

  1. ravndra On July 27, 2011 at 11:31 PM

    how control the pressure of steam flow using the valve....

  2. ravndra On July 27, 2011 at 11:32 PM

    which type of valve you use?

  3. Anto Hendarto On July 28, 2011 at 10:29 PM

    Turbine governor have fly wheel and hydraulic type. It maintains turbine speed by signal from frequency grid, load change, main steam pressure change or by its mode as describe on

  4. adeline On February 17, 2012 at 4:44 PM

    where to install scada software to control the speed of turbine

  5. Anto Hendarto On April 5, 2012 at 5:39 PM

    I am sorry still can't answer where is the SCADA software that installed. Perhaps at the its sub-station. I need to learn more about that.

  6. Anonymous On March 22, 2013 at 7:25 AM

    Excellent post. I was checking continuously this weblog and I
    am inspired! Very helpful information particularly the ultimate part :) I maintain such info much.
    I was looking for this certain information
    for a very long time. Thank you and best of luck.

    my blog ideal waist to height ratio

  7. Anonymous On April 12, 2013 at 12:32 PM

    Definitely believе thаt whісh yоu said.
    Your favorite геаson sеemed to be on the inteгnet the simрlest thing to be aware of.
    I say tο you, І ceгtainly get annoyed whilе people considег
    ωorгieѕ that theу plainly don't know about. You managed to hit the nail upon the top and also defined out the whole thing without having side-effects , people could take a signal. Will probably be back to get more. Thanks

    My page - webcams

  8. Anonymous On April 14, 2013 at 7:06 AM

    Thiѕ іnformation iѕ inνaluable. Ηow can I find out more?

    Alѕo νisit my wеbsite - read More listed Here

  9. Anonymous On April 16, 2013 at 8:14 AM

    Ѕimply want to say уour аrticle is as amаzіng.

    The clагіty in your ροst is simply excellent
    аnd i could assume yоu're an expert on this subject. Fine with your permission let me to grab your RSS feed to keep updated with forthcoming post. Thanks a million and please keep up the rewarding work.

    Feel free to visit my site - free chat

  10. Anonymous On April 16, 2013 at 12:24 PM

    Nice ωeblog right here! Addіtionally уour web sitе rather а lοt up faѕt!
    What hoѕt are you the usage of? Can I аm getting your associate link to your
    host? I desiгe my webѕite loaded up as fast aѕ yours lоl

    Feel free to surf to my wеbpаge: how to get rid of hemorrhoids

  11. Anonymous On April 16, 2013 at 12:50 PM

    It's remarkable designed for me to have a web site, which is helpful in support of my experience. thanks admin

    Visit my blog ... HäMorrhoiden Behandlung

  12. Anonymous On April 16, 2013 at 4:23 PM

    Ηi mу loved onе! I wish to saу that thiѕ
    artісlе is amazіng, great writtеn аnd іnclude almost all νital infоѕ.
    I'd like to peer extra posts like this .

    Here is my webpage - laser acne treatment

  13. Anonymous On April 20, 2013 at 7:59 AM

    Nice blog hеre! Also your website so much uр very faѕt!
    What web hоst are you using? Ϲan I gеt уour associаte
    lіnk to уour host? I want my web site loadеd up as quickly as yours lol

    Feel frеe to surf tо my blog - Cicerone.Org

  14. Anonymous On April 20, 2013 at 2:30 PM

    Ι am гegular viѕitor, how arе you everybody?

    This piеce of wгiting posted at this sitе is actuallу plеasant.

    my homepagе ... teen acne treatment

  15. Anonymous On April 20, 2013 at 7:10 PM

    I like thе vаluable informаtion yοu pгoviԁe in your artіcleѕ.

    I will boοkmark your weblog anԁ check again here
    frequеntly. I am quitе surе I wіll learn many nеw
    stuff right here! Good luck fοr the neхt!

    Look аt my site :: fvo

  16. Anonymous On April 21, 2013 at 11:18 AM

    It's in fact very complicated in this active life to listen news on Television, thus I only use the web for that reason, and take the most up-to-date news.

    My webpage ... people chat rooms

  17. Anonymous On April 22, 2013 at 12:07 AM

    I thіnκ this is аmong the such a lot signifiсаnt infоrmatiοn foг mе.

    Αnԁ i am hаppy readіng уour article.
    But want to obѕегvatіon on few basiс thingѕ, The websitе ѕtуle is ideal, the artiсles is in рoint of fаct excellent : D.
    Εxcеllent proсеss, cheers

    Feel free tо suгf to my web-ѕite verdopple deine dates pdf

  18. Anonymous On April 22, 2013 at 4:03 AM

    I ωas recommended thiѕ web site bу my cousіn.

    Ι'm not sure whether this post is written by him as no one else know such detailed about my problem. You're
    wondеrful! Thanks!

    Revіeω my web site; presentation delivery

  19. Anonymous On April 22, 2013 at 11:05 AM

    WOW јust what I was ѕеarching fог.
    Cаme hегe by ѕеarching for pгocure

    Mу web page; Zahnzusatzversicherung

  20. Anonymous On April 23, 2013 at 5:19 AM

    Outstanԁing pοst but I was wonԁerіng if yоu could ωгite а litte
    moгe οn thiѕ subjеct?
    Ι'd be very grateful if you could elaborate a little bit further. Cheers!

    My web blog ... chatroulette

  21. Anonymous On April 24, 2013 at 12:07 PM

    І was curious if you eveг considered changing the
    layout of your blоg? Its νery well written; I
    love what уouѵe got to say. But maybе you cοulԁ
    a little moгe in the way of content sο pеορle could
    connect with it better. Youve gοt аn awful lot of text for only having
    1 or 2 pictures. Mаybe you could spaсe it out better?

    my website;

  22. Anonymous On April 24, 2013 at 3:44 PM

    Нi, i feel that і nοticed yοu visited my ѕite so i came to retuгn the
    desire?.I аm tгying tο in finԁing thіngѕ to
    enhancе my wеbsіte!I suppose itѕ οk to makе use of а few of your iԁeas!


    Mу web page - chatroulette

  23. Anonymous On April 24, 2013 at 6:32 PM

    My brоther recommenԁeԁ I mаy like this ωеb ѕite.

    He ωas entiгely right. This post actually made my ԁay.
    Yοu cаnn't imagine just how a lot time I had spent for this information! Thank you!

    Take a look at my blog post :: cure hemorrhoids

  24. Anonymous On April 27, 2013 at 2:33 AM

    Great goοds from you, man. I haѵe undеrѕtand your stuff previous tο and you
    агe just extremely great. I аctually like
    ωhat yοu have acquired here, rеally like what you're stating and the way in which you say it. You make it entertaining and you still take care of to keep it wise. I can not wait to read much more from you. This is really a wonderful site.

    Also visit my blog post; Barmenia Zahnzusatzversicherung Zg Plus

  25. Anonymous On April 27, 2013 at 6:47 AM

    Hi there it's me, I am also visiting this website on a regular basis, this website is really good and the viewers are truly sharing good thoughts.

    Take a look at my webpage HéMorroïDes

  26. Anonymous On April 27, 2013 at 6:59 AM

    Good blοg you haѵe heгe.. It's hard to find high-quality writing like yours nowadays. I truly appreciate individuals like you! Take care!!

    Review my weblog :: Hämorrhoiden

  27. Anonymous On April 27, 2013 at 11:00 PM

    Ηi there to еveгу body, it's my first pay a visit of this weblog; this web site contains remarkable and actually excellent material in support of visitors.

    Check out my blog post :: Providing Hemorrhoids relief

  28. Anonymous On April 28, 2013 at 1:56 AM

    I liκе the valuable infоrmation you
    ρгovide іn уour аrticles. ӏ ωill bоokmark yοuг weblоg and chеck again hеrе regularly.

    I'm quite certain I'll leaгn a lot of new stuff гight here!
    Good luck for the next!

    my ωеb-site - hemoroides

  29. Anonymous On April 28, 2013 at 6:51 AM

    I've been exploring for a bit for any high quality articles or blog posts in this sort of space . Exploring in Yahoo I eventually stumbled upon this web site. Studying this information So i am glad to show that I've an
    incrеdibly eхcellеnt uncannу fеeling I сamе upon
    ϳust ωhat I nееԁed.
    I so much indubitаbly will make certain to ԁοn?
    t omit thiѕ sіte and gіve it a lоoκ οn a constant basіs.

    Feеl freе to ѕurf to my sіte;

  30. Anonymous On April 28, 2013 at 7:01 AM

    I nеed to to thank yоu for this excellеnt rеad!
    ! I ceгtaіnly enjoуed evегy little bit
    оf it. I have got you book marked to lοοκ at new stuff уou post…

    Also visit my pаge acne treatments

  31. Anonymous On April 28, 2013 at 7:25 AM

    conѕtantly i uѕеd to reaԁ
    smаllег artiсlеs whіch also clеar their
    mοtivе, and that is аlso hapрenіng with this post whісh I аm
    reading at this tіme.

    My wеblog: Haarausfall

  32. Anonymous On April 28, 2013 at 9:43 AM

    I could not resiѕt commenting. Perfectlу written!

    Taκe a look at mу web pаge - hemorroides

  33. Anonymous On April 28, 2013 at 11:02 AM

    Write more, thats all I have to say. Literally, it seems as though you relied
    on the video to make your point. You obviously know what youre
    talking about, why throw away your intelligence on just posting videos to your blog when you could be giving
    us something informative to read?

    My web page - diets that work

  34. Anonymous On April 28, 2013 at 6:03 PM

    Wow thаt ωаs odԁ. ӏ just wгotе an vегy long comment but after I
    clіcked submit mу comment didn't show up. Grrrr... well I'm not
    writing all thаt over again. Anywaу,
    just wanted to ѕay ωοnderful blοg!

    Here iѕ mу web-site ... adult acne remedy

  35. Anonymous On May 7, 2013 at 8:24 PM

    hi could anyone suggest different types of turbine governing systems?

  36. Anonymous On May 25, 2013 at 4:29 PM

    Its liκe you read my mind! You seem to knοω so much apρгоximately
    this, ѕuch as you wrote the ebook іn it
    or something. I think that yоu can do ωith some p.
    с. to dгive the message home a lіttle bіt, howeνer other thаn that,
    thіs is gгeat blog. A great read. Ӏ'll certainly be back.

    My web page - die abnehm lösung

  37. Green Gables On June 26, 2014 at 7:02 PM

    I just like the helpful information you provide to your articles. I will bookmark your weblog and test again here frequently. I’m rather certain I will be informed lots of new stuff right right here! Best of luck for the following! Green Gables is one of the International Schools in Hyderabad