The invention discloses an RSOC
coupling coal-fired
power generation system participating in primary
frequency modulation and an operation method. The
system comprises a
coal-fired power generation unit
thermodynamic system and a reversible
solid oxide fuel
cell RSOC
coupling system. When the frequency of the
power grid rapidly rises, various valves are reasonably controlled, the power of the
steam turbine is rapidly increased, meanwhile, the RSOC is switched into a power generation mode,
chemical energy is rapidly converted into
electric energy to be merged into the
power grid, reaction products are introduced into the small
steam turbine to continue acting, and the total power generation power of the whole
system is further rapidly increased; when the frequency of the
power grid is rapidly reduced, the RSOC is switched into an
electric energy storage mode while the power of the
steam turbine is rapidly reduced by reasonably controlling various valves,
electric energy generated by a
coal-fired power
generating unit is rapidly consumed through
electrolysis, the high-pressure heater
water supply flow is increased by utilizing water stored in a
water storage tank, and the power of a high-pressure cylinder and a medium-pressure cylinder of the steam
turbine is further rapidly reduced; and the total power of the whole system is rapidly reduced. Different power generation units are coupled, the characteristics of high power generation speed and flexible operation of the RSOC are brought into full play, and the primary
frequency modulation capability of the coal-fired
power generation system is improved.