The invention discloses a fused salt heat storage and heat release
peak load regulating
system for a thermal power
generating unit. According to the fused salt heat storage and heat release peak loadregulating
system, a fused salt heat storage
system, an I-stage fused salt low-temperature heat release system and a II-stage fused salt high-temperature heat release system are additionally arrangedon the basis of the original thermal power
generating unit, and therefore
peak load regulating of a
power grid is realized through heat storage and heat release of fused salt; when the dispatching load of the
power grid is decreased, part of high-temperature reheat steam is extracted from an outlet of a boiler reheater and exchanges heat with the fused salt in the fused salt heat storage system, and therefore consumption and utilization of the reheat steam in the
electricity utilization off-peak season are completed; when the dispatching load of the
power grid is increased, a part of high-pressure feedwater flowing to a high-pressure heater is divided into the I-stage fused salt low-temperature heat release system to exchange heat with the fused salt; and meanwhile, the steam
discharge amount of a high-pressure cylinder is increased, part of increased exhaust steam of the high-pressure cylinder is fed into the II-stage fused salt high-temperature heat release system to exchange heat with the high-temperature fused salt, the heated steam enters an intermediate-pressure cylinder to apply work, the amount of the steam entering the intermediate-pressure cylinder and the output of a
steam turbine can be increased, and the
electric power of the thermal power
generating unit can be rapidly increased.