System for improving using efficiency of thermal power plant

Abstract

The invention provides a system for improving the using efficiency of a thermal power plant. The system comprises a first high temperature energy storage device and a steam energy accumulator, a boiler is connected to a high-pressure steam turbine, an inlet of a medium-pressure steam turbine, an inlet of the high-pressure steam turbine is connected to an inlet of the first high temperature energystorage device through a pipe, inlets / an inlet of the medium-pressure steam turbine and / or the high-pressure steam turbine are / is connected to the steam energy accumulator through pipes, and an outletof the first high-temperature energy storage device is connected with the steam energy accumulator and a low-pressure steam turbine connection; and the steam energy accumulator is connected to the low-pressure steam turbine through a pipe. By means of the technical scheme, energy is stored in different devices, so that the power plant provides stable thermal power generation and flexible power output, and the power plant efficiency and safety are improved.

Description

technical field [0001] The invention belongs to the technical field of energy utilization, and in particular relates to a system for improving the utilization efficiency of a thermal power station. Background technique [0002] As we all know, the power generation of the power station must continuously meet the demand of the load, and the whole process must be strictly controlled to ensure a good match. If this balance is broken or the difference between the two exceeds the limited range, it will lead to the instability of the grid system and may even lead to regional blackouts. [0003] The current load balance management mainly responds to load changes passively through fossil fuel conventional peaking power stations. The grid of the future faces the double challenge of how to manage the impact of fast-growing intermittent renewable energy generation on the grid and fast frequency response. Unlike passive load-based power generation regulation, the main responsibility of...

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Problems solved by technology

[0005] 2) Low load factor: the power station will only generate electricity when needed, and its power generation capacity must be able to meet the peak load requirements

This requires the power station to work more flexibly and respond faster. In order to maintain the stability of the power grid, frequent start and stop will affect the safety, efficiency and equipment life expectancy of the power station.

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