Thermoelectric decoupling system capable of improving energy utilization quality of thermoelectricity plant

Abstract

The invention discloses a thermoelectric decoupling system capable of improving energy utilization quality of a thermoelectricity plant. The system comprises a boiler, a high voltage cylinder, a primary bypass adjusting valve, a first additional high voltage heater, a medium voltage cylinder, a second additional high voltage heater, a secondary bypass adjusting valve, a hot net circulating water system, a low voltage cylinder and a water feeding adjusting valve. According to the system disclosed by the invention, decoupling operation of power production and thermal production can be realized, so that heat supply peak shaving ability of a thermoelectric unit can be obviously improved.

Description

technical field [0001] The invention relates to a thermoelectric decoupling system, in particular to a thermoelectric decoupling system for improving the energy utilization quality of a thermal power plant. Background technique [0002] Coal-fired thermal power generation will be an important part of my country's energy system now and for a long period of time in the future. However, with the slowdown in the growth of electricity demand in the whole society and the large-scale development of renewable energy, the utilization hours of thermal power will decrease year by year. To improve the operational flexibility of thermal power units, it will be the general trend to participate in large-scale deep peak shaving of power grids. In my country's "Three Norths" region, the proportion of combined heat and power units is large, and peak-adjustable power sources such as hydropower and pure condensing units are scarce. Difficulty in peak regulation has become the most prominent pro...

AI Technical Summary

Problems solved by technology

Traditional coal-fired thermal power units operate in the mode of "heat-based power generation", and the peak-shaving capacity is only about 10%. The ability to participate in peak-shaving is insufficient, which affects the consumption of new energy sources such as wind power.

The above situation has led to difficulties in peak regulation of the power grid, making it extremely difficult to balance the power grid in low valleys, and increasing the risk of safe operation of the power grid; Structural transformation and upgrading; the contradiction between power grid peak regulation and thermal power unit heating is prominent, affecting the safety of residents’ heating in winter, and there is a risk of causing people’s livelihood problems. Therefore, it is imperative for thermal power units to realize the decoupling of heat production and power production, so design is urgently needed Develop a system that can realize the decoupled operation of power production and heat production, and can significantly improve the heat supply peak-shaving capacity of thermal power units

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