Heat and power synergistic system and method based on reheating and heat accumulation adjustment

Abstract

The invention discloses a heat and power synergistic system and method based on reheating and heat accumulation adjustment. The system comprises a high-pressure turbine, a medium-low-pressure steam turbine, a power generator, a boiler, a hot water tank, a heat accumulation steam make-up pump, a reheating and heat accumulation bypass, a heat accumulator, a heating station, a steam extraction and heat supply branch, a heat accumulation and steam supply branch, a heat accumulation and steam supply control valve, a reheating and heat accumulation bypass valve, a reheater, a reheating branch, a hotwater heat pump, a hot water heat supply branch and a hot water user. The problem that consideration to both heat and power cannot be achieved in the peak shaving process since a traditional heat andpower unit sets power according to heat or set the heat according to the power is solved to a certain extent, the effect of excess power generation on the premise of meeting the heat supply requirement is achieved, the problem that the heat requirement is not sufficient on the condition of meeting the power generation requirement, particularly the problem that the heat requirement is not sufficient is solved, and the thermoelectric power system effect of the unit is improved and the system and the method have very good application prospects.

Description

technical field [0001] The invention relates to combined heat and power generation and heat storage technology, in particular to a heat and power synergy system and method based on reheat heat storage regulation. Background technique [0002] Combined heat and power technology is one of the effective ways to improve the economy of generating units. Moreover, as the proportion of my country's new energy power generation market continues to increase, the requirements for traditional power stations to participate in peak regulation are getting higher and higher. However, due to the demand side The mismatch between thermal power demand and peak shaving requirements often leads to the mismatch of supply and demand, especially the matching of supply. How to achieve better heat and power synergy under the conditions of peak shaving and changes in market demand is an important contradiction facing the efficient and economical operation of thermal power units. [0003] As a tradition...

AI Technical Summary

Problems solved by technology

However, there are still several problems to be solved: (1) the high-grade steam demand of heat users cannot be solved. The existing technology only adopts the technical solution of storing hot water, the grade of heat energy is low, and the site occupied is large, so it cannot Meet the needs of users who have long-term and high-grade steam requirements

(2) It is economically feasible to directly store electric energy to meet the demand for heat energy under certain market conditions, and it can effectively adjust the peak and valley characteristics of electricity consumption to achieve thermoelectric synergy, but it is a thermoelectric energy implemented on the user side Synergy, not on the energy supply side, the cost is still high

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