Apparatus and method for reactor power control of steam turbine power generation system

A method for reactor power control of a steam turbine power generation system including a reactor, a high-pressure turbine to which steam is supplied from the reactor through a main steam pipe, a low-pressure turbine to which the steam discharged from the high-pressure turbine is directly supplied via a moisture separator reheater, a branch pipe branched from the main steam pipe to be connected to the moisture separator reheater, a generator connected to the low-pressure turbine, a condenser for condensing the steam discharged from the low-pressure turbine, a condensate pump for feeding condensate condensed by the condenser, and feed water heaters for heating the condensate, the method comprising:

• (a) measuring power of the generator;
• (b) determining whether or not the power is reduced by comparing a measured power value of the generator with a target power value;
• (c) generating a power compensation request signal corresponding to the power reduction of the generator;
• and
• (d) regulating an amount of steam supplied through the branch pipe according to the power compensation request signal;
• wherein the low-pressure turbine is a single turbine.

A steam turbine power generation system comprising:

• a reactor;
• a high-pressure turbine to which steam is supplied from the reactor through a main steam pipe;
• a low-pressure turbine to which the steam discharged from the high-pressure turbine is directly supplied via a moisture separator reheater;
• a branch pipe branched from the main steam pipe to be connected to the moisture separator reheater;
• a generator connected to the low-pressure turbine;
• a condenser configured to condense the steam discharged from the low-pressure turbine;
• a condensate pump configured to feed condensate condensed by the condenser;
• feed water heaters configured to heat the condensate;
• and
• a controller configured to control a branch pipe control valve provided on the branch pipe and an opening degree of the branch pipe control valve;
• wherein the low-pressure turbine is a single turbine.