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Cogeneration unit deep peak regulation system and method based on zero output of steam turbine

A technology for cogeneration units and steam turbines, which is applied in heating systems, heating methods, steam engine installations, etc., can solve problems such as limited peak shaving capacity of cogeneration units, and achieve deep peak shaving capacity, flexible operation, and realization of operation. Effect

Active Publication Date: 2020-08-11
SHANGHAI POWER EQUIP RES INST
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the invention is to solve the problem of limited peak regulation capacity of cogeneration units

Method used

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  • Cogeneration unit deep peak regulation system and method based on zero output of steam turbine

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Embodiment Construction

[0020] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0021] The connection and composition of a deep peak-shaving system of a cogeneration unit with zero steam turbine output provided by the present invention is as follows: a boiler 1 includes a superheater 12 and a reheater 13 . The steam outlet of the superheater 12 is connected with the high-pressure cylinder 2 via the main steam valve 5 , and is connected with the high-side valve 9 at the same time. The high bypass valve 9 i...

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Abstract

A technical scheme of the invention provides a cogeneration unit deep peak regulation system based on zero output of a steam turbine. The other technical scheme of the invention provides a cogeneration unit deep peak regulation method based on zero output of the steam turbine. The basic principle of the system and the method is that most steam passes through a bypass of the steam turbine to supplyheat or steam, and only a small amount of steam is reserved and introduced into the steam turbine to cool blades and rotors of high, medium and low pressure cylinders. At the moment, the steam turbine is only maintained at 3000rpm to operate as a phase modifier, a steam turbine generator unit is in a working condition of a motor, and a generator absorbs a small amount of power from a power grid to operate as the motor. Under the working condition of zero output operation of the steam turbine, the peak regulation capacity and the heat supply capacity of the unit are maximized.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation, and relates to a deep peak-shaving system and method for a heat and power cogeneration unit based on zero output of a steam turbine. Background technique [0002] In recent years, my country's wind power, photovoltaic and other new energy power installed capacity has continued to grow rapidly, and the installed capacity both in service and under construction has ranked first in the world. New energy sources such as wind power and photovoltaics have provided us with a large amount of clean electricity. However, since wind power and photovoltaic power generation are significantly affected by wind speed and intensity of light, they will have an impact on the power quality of the grid after being connected to the grid, resulting in serious wind curtailment in some areas. , Light abandonment phenomenon. [0003] In this context, the National Energy Administration requires thermal pow...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D17/10F01K11/02F01K17/02F01K23/02F24D11/00
CPCF01D17/10F01K11/02F01K17/02F01K23/02F24D11/004Y02E20/14
Inventor 刘网扣蒋俊徐佳敏范雪飞刘传亮江路毅
Owner SHANGHAI POWER EQUIP RES INST
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