Power Generation Systems Including Steam Heat Accumulators

Abstract

The invention provides a power generation system comprising a steam heat accumulator. The power generation system comprises a disc-type solar energy system and a coal-fired power generation system which are connected together in parallel; the superheated steam of the disc-type solar energy system and that of the coal-fired power generation system both go into a main steam pipeline and are used for propelling the generator of a turbo generator unit; the steam heat accumulator is mounted between the disc-type solar energy system and a main steam pipeline; when the solar energy system supplies sufficient steam, the solar energy supplied steam is divided into two branches, wherein one branch goes into the main steam line, while the other branch goes into the steam heat accumulator; when the steam supplied by the solar energy system is insufficient, the steam heat accumulator generates secondary steam which directly goes into the main steam line to cover the shortage of the steam supplied by the disc-type solar energy system. The power generation system is used for solving the safety problem of frequency adjustment of the power generation system to cope with the fluctuation of the disc-type solar energy system by use of the steam heat accumulator, and therefore, the overall efficiency of the power generation system is improved, the energy source is saved and a new choice is provided for efficient utilization of the solar energy.

Description

technical field

[0001] The invention belongs to the technical field of power generation equipment, and in particular, the invention particularly relates to a power generation system including a steam heat accumulator. Background technique

[0002] Due to the instability and intermittent nature of solar energy, solar energy is usually combined with coal-fired power stations to achieve complementary power generation. Dish technology has become a better choice in solar-assisted coal-fired power generation systems because of its high light-to-heat conversion efficiency. At present, the circulation mode of the dish solar assisted coal-fired power generation system is usually carried out as follows: the dish solar system is connected in parallel with the regenerative heating system and the boiler. When the solar energy is sufficient, the steam generated by the dish solar system is merged into the main steam pipeline, and The steam generated by the coal-fired unit is mixed into th...

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