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A system for improving peak shaving flexibility of gas turbine combined cycle cogeneration

A combined heat and power, combined cycle technology, applied in gas turbine installations, combined combustion mitigation, mechanical equipment, etc., can solve the problem of not considering the rational utilization of flue gas heat, so as to increase the consumption of new energy and increase the consumption of new energy. volume, and the effect of increasing flexibility

Active Publication Date: 2022-07-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the gas turbine power generation process uses the heat generated by fuel combustion to generate power, and does not consider the further rational use of the heat in the flue gas output after power generation, resulting in the heat supply of the combined cycle combined heat and power system. strong coupling

Method used

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  • A system for improving peak shaving flexibility of gas turbine combined cycle cogeneration
  • A system for improving peak shaving flexibility of gas turbine combined cycle cogeneration

Examples

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Embodiment 1

[0047] Example 1 provides an optimal implementation of the system for improving the peak shaving flexibility of gas turbine combined cycle cogeneration of heat and power according to the present invention, but the implementation of the present invention is not limited to the implementation defined in Example 1. Example 1 The solution cannot limit the protection scope of the present invention.

[0048] like figure 1 As shown, the system for improving the flexibility of gas turbine combined cycle cogeneration peak regulation of the present invention includes: fuel inlet 1, air inlet 2, compressor 3, combustion chamber 4, gas turbine 5, generator 6, high pressure superheater 7 , reheater 8, high pressure drum 9, high pressure evaporator 10, medium pressure superheater 11, first high pressure economizer 12, low pressure superheater 13, medium pressure steam drum 14, medium pressure evaporator 15, medium pressure economizer Coaler 16, second high pressure economizer 17, low pressu...

Embodiment 2

[0061] Embodiment 2 of the present invention is used to illustrate the technical effect of the present invention.

[0062] like figure 2 As shown, according to the power dispatch curve, the power generation load is 90% from 10:00 to 24:00. At this time, the heat and electricity loads of the unit can be satisfied at the same time by adjusting the bottom cycle heat supply and steam extraction. From 0:00 to 10:00, the thermoelectric load has the following characteristics: the demand for electric load is low, and the demand for heat load is high. Under the operation mode of constant heat and electricity, when the heat load is satisfied, the output of the electric load must be larger than that of the power grid. The demand value will adversely affect the safe operation of the power grid and the consumption of new energy.

[0063] like figure 2 a- figure 2 d is the comparison chart of the power supply curve in the heating period from December to March in a certain place, such ...

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Abstract

The invention relates to a system for improving the flexibility of gas turbine combined cycle combined heat and power for peak regulation, comprising: a gas-fired power generation assembly, a steam power generation assembly and a waste heat boiler assembly; The boiler assembly is provided with a first air outlet, the first air outlet is used to discharge the flue gas after heat exchange, and the gas power generation assembly is used to generate electricity by using gas; the working fluid outlet of the waste heat boiler assembly is the same as the working fluid of the steam power generation assembly. The inlet is communicated, and the outlet of the working medium of the steam power generation assembly is communicated with the inlet of the working medium of the waste heat boiler assembly. The invention sets the steam power generation assembly and the waste heat boiler assembly to absorb and reuse the heat of the flue gas output by the gas power generation assembly, thereby reducing the limitation of the power supply by the heat supply in the power generation process of the combined cycle heat and power cogeneration system.

Description

technical field [0001] The invention relates to the technical field of gas-fired power generation, in particular to a system for improving the flexibility of gas turbine combined cycle cogeneration and peak regulation. Background technique [0002] At present, the gas turbine power generation process uses the heat generated by the combustion of fuel to generate electricity, and does not consider the further rational utilization of the heat in the flue gas output after power generation, resulting in the combined cycle heat and power supply system. Strongly coupled relationship. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a system for improving the flexibility of gas turbine combined cycle heat and power peak regulation, so as to realize further rational utilization of the heat in the flue gas output after power generation, and reduce the heat supply in the combined cycle heat and power system. Limit the amount of power supply and in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C6/00F02C6/18F01K23/10F01D15/10F01D15/12F02C7/08
CPCF02C6/00F02C6/18F01K23/10F01D15/10F01D15/12F02C7/08Y02E20/16
Inventor 段立强汪欣巍
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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