Startup and shutdown lifting load control method and device for two-tow-one gas turbine combined cycle unit
A technology of combined cycle unit and load control, which is applied in the direction of steam engine installation, combined combustion mitigation, machine/engine, etc., and can solve problems such as too many operations by operators, reduced unit startup and shutdown efficiency, and potential safety hazards of the unit
Active Publication Date: 2020-02-28
NORTH CHINA ELECTRICAL POWER RES INST +1
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Problems solved by technology
[0021] During the load change process of the unit, the process conditions and load settings are all done manually. Too many conditions need to be confirmed, which leads to more operations by the operators, which reduces the efficiency of unit startup and shutdown. At the same time, it is easy to cause operational errors during this period. There are certain hidden dangers to the safety of the unit
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[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0045]Load control is the ultimate goal of realizing unit-level APS, which can ensure that the AGC function is put into operation as soon as possible. The process of load control mainly includes temperature matching from the initial grid-connection exit temperature of the unit to the load point where the unit has uninterrupted load increase. The difficulty of this control link lies in the automatic realization of each condition of the system. In the early stage of grid connection, the unit cannot raise or lower the load at will, and is affected by many characteristic...
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The invention provides a startup and shutdown lifting load control method and device for a two-tow-one gas turbine combined cycle unit. The method comprises the following steps: obtaining a gas turbine startup and shutdown condition satisfaction signal, wherein the gas turbine comprises a first gas turbine and a second gas turbine in the two-tow-one gas turbine combined cycle unit; according to the gas turbine startup and shutdown condition satisfaction signal, obtaining a gas turbine lifting load condition satisfaction signal; according to the gas turbine lifting load condition satisfaction signal, obtaining an automatic state throwback condition satisfaction signal of a manual operating station of the gas turbine; and according to the gas turbine lifting load condition satisfaction signal and the automatic state throwback condition satisfaction signal of the manual operating station of the gas turbine, controlling the lifting load of the gas turbine in startup and shutdown processes.According to the startup and shutdown lifting load control method and device for the two-tow-one gas turbine combined cycle unit, the lifting load control of the two-tow-one gas turbine combined cycle unit in the startup and shutdown processes can be realized; the efficiency is high; and the accuracy is high.
Description
technical field [0001] The invention relates to the start-stop control of a two-to-one gas turbine combined cycle unit, and in particular to a method and device for controlling the lifting load during the start-up and stop of the two-to-one gas turbine combined cycle unit. Background technique [0002] With the increase of load and the increase of grid scale, the new situation of interconnection between UHV power grid and large regional power grid has made the peak regulation capability of gas-fired units more and more stringent, which makes the frequency of unit lifting and lowering load continue to increase. In order to meet the requirements of peak regulation and improve the flexibility of the unit, it is necessary to further optimize the automatic adjustment of thermal control during the process of unit lifting and lowering load. [0003] The Automatic Plant Start-up and Shutdown System (APS for short) is a system that realizes the automation of the start-up and shutdown...
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IPC IPC(8): F01K23/10F01K13/02F01K13/00F01K11/02F01D15/10
CPCF01K23/10F01K13/00F01K13/02F01K11/02F01D15/10Y02E20/16
Inventor 李卫华尤默高爱国骆意尚勇杨振勇康静秋刘磊
Owner NORTH CHINA ELECTRICAL POWER RES INST