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over frequency problem of generator

dear sir,
myself laxmi.i m frofessional to power sector.plz soleve my
problems.my generator capacity is 12megawatt.in parallel condition with grid when my generation is on 11mw generation mode and import is 1mw at that mean time if grid bkr got tripped then my TG breker got tripped to over frequency fault (also turbinr) where as load of app.10mw
is avail that same time.so plz lead me to a right solution by which i can save my TG and turbine from above problem.TG make- TDPS,protection relay - REM-545,turbinr make-seimens with woodward-505 controler.Awaiting ur valued reply.
regards,
laxmikanta

Replies

  • baja
    baja
    Check your HP control valve. when load cuts off input steam should be limited to turbine. It is the function of HP control valve. Better get it serviced.

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