Electric heat storage boiler regeneration system used for regulating peak

Abstract

The invention discloses an electric heat storage boiler regeneration system used for regulating the peak and belongs to the technical field of power generation equipment. The electric heat storage boiler regeneration system used for regulating the peak comprises a power station boiler, a turbine regenerative extraction system, an electric heat storage boiler, a water-water heat exchanger, a cooling tower circulating water system and a heat supply network connection pipeline. The core of the invention is to provide the electric heat storage boiler regeneration system used for regulating the peak. Surplus generated power in a power plant and abandoned wind power are stored into the electric heat storage boiler in the heating period in winter and are subjected to heat exchange with heat-supply network water to be supplied to a heat user; and when no heat user exists in summer, the deep peak regulation surplus power in the power plant and abandoned wind power in the trough period of a power grid are absorbed. When the power grid is in a peak or normal range, part of cooling tower circulating water is pumped into the electric heat storage boiler to absorb heat, the high-temperature circulating water absorbing heat is subjected to heat exchange with part of condensation water through the water-water heat exchanger, the condensation water is heated to the temperature the same as that of condensation water heated by a lower-pressure heater, stability of the system is ensured, and in this way, the steam extraction capacity of each cylinder is reduced.

Description

technical field [0001] The invention belongs to the technical field of power generation equipment, and in particular relates to a heat recovery system of an electric heat storage boiler for peak regulation. Background technique [0002] At present, the operating principle of the solid electric heat storage peak-shaving unit is to convert part of the electric energy of the high-voltage power grid into heat energy and store it in the heat storage body during the low period of the power grid, which is also the time when wind power is abandoned. Energy conversion to achieve the purpose of peak regulation. The stored heat energy can be converted into hot water, steam and other products for heat users. [0003] During the low heat consumption period in summer, when the power supplied by the power grid is lower than the minimum power generated by the power plant for stable combustion, there is nowhere to supply the remaining power, and the abandoned wind power cannot be used, resu...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a heat recovery system for electric heat storage boilers used in power plants for peak regulation, which is used to solve the problem that the current solid electric heat storage peak regulation units cannot use wind power during low heat consumption periods such as summer, resulting in energy wasteful technical problems

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