CN114576012B - Gas turbine inlet guide vane adjusting method and device - Google Patents
Gas turbine inlet guide vane adjusting method and device Download PDFInfo
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- CN114576012B CN114576012B CN202210316937.4A CN202210316937A CN114576012B CN 114576012 B CN114576012 B CN 114576012B CN 202210316937 A CN202210316937 A CN 202210316937A CN 114576012 B CN114576012 B CN 114576012B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/057—Control or regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/20—Control of working fluid flow by throttling; by adjusting vanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Engine Equipment That Uses Special Cycles (AREA)
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Abstract
The invention provides a method and a device for adjusting inlet guide vanes of a gas turbine, wherein the method comprises the following steps: acquiring the initial temperature of the turbine and the gas exhaust temperature of the gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value; maintaining the temperature of the gas exhaust unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value; and obtaining the load value of the gas turbine, and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value. According to the invention, through a comprehensive complementary regulation mode, the problem of efficiency sacrifice of a simple equal gas exhaust temperature regulation mode is solved, and the problem of exceeding of the main steam temperature of a simple equal gas turbine initial temperature regulation mode is avoided, so that the economy of partial load of the gas-steam combined cycle unit is improved.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a method and a device for adjusting inlet guide vanes of a gas turbine.
Background
Compared with the coal-fired power generation industry, the fuel gas power generation industry is subjected to larger production cost pressure, the fuel cost of the fuel gas power generation enterprise currently accounts for more than 80% of the total operation cost, and the profitability of the put-into-operation fuel gas power plant is weaker. In order to adapt to the new normal state, the advanced technology of the power plant, high unit efficiency, less resource consumption and good economic benefit are ensured, and the market competitiveness of the fuel gas power generation industry is further improved. Advanced and mature technology is adopted to technically reform the laggard equipment with poor economy and safety, so that the internal potential is excavated, the reliability and economy of the unit are improved, the cost is reduced, the requirements of power grid peak regulation are further met, the technical equipment level of the power plant is improved, and the emission of pollutants and greenhouse gases is reduced.
CO, a combustion product of a fuel 2 Is a greenhouse effect pollution gas, and is unavoidable; CO reduction 2 The only way to increase the thermal efficiency of the gas turbine is to consume less fuel to produce the same mechanical work.
In recent years, the domestic electric power demand is slowly increased, and the annual average load rate of most of the gas-steam combined cycle units for peak shaving is generally not high, and is generally maintained at 70-80% of rated load. Therefore, the performance of the partial load of the gas-steam combined cycle unit is improved, and the gas-steam combined cycle unit is a powerful weapon for the market competition of power plants.
Disclosure of Invention
Aiming at the problems existing in the prior art, the main purpose of the embodiment of the invention is to provide a method and a device for adjusting inlet guide vanes of a gas turbine, so that the partial load performance of the gas turbine is optimized, and the partial load economy of a gas-steam combined cycle unit is improved.
To achieve the above object, an embodiment of the present invention provides a gas turbine inlet guide vane adjustment method, including:
acquiring the initial temperature and the gas exhaust temperature of a gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
maintaining the temperature of the gas exhaust unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value;
and obtaining the load value of the gas turbine, and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
Optionally, in an embodiment of the present invention, the maintaining the initial temperature of the gas turbine, reducing the angle of the inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value includes:
maintaining the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine;
and acquiring the main steam temperature of the steam turbine and the gas exhaust temperature of the gas turbine, stopping adopting a gas turbine initial temperature adjusting mode when the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limiting value, and adopting a gas exhaust temperature adjusting mode instead.
Optionally, in an embodiment of the present invention, the maintaining the temperature of the gas exhaust unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value includes:
acquiring a current load value of the gas turbine, keeping the temperature of the gas exhaust unchanged, and reducing the current load value of the gas turbine and the angle of an inlet guide vane;
and stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limiting value.
The embodiment of the invention also provides a gas turbine inlet guide vane adjusting device, which comprises:
the first adjusting module is used for acquiring the initial temperature and the gas exhaust temperature of the gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
the second adjusting module is used for keeping the temperature of the gas exhaust unchanged and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limiting value;
and the third adjusting module is used for acquiring the load value of the gas turbine and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
Optionally, in an embodiment of the present invention, the first adjusting module includes:
the turbine initial temperature unit is used for keeping the initial temperature of the gas turbine unchanged and reducing the angle of an inlet guide vane of the gas turbine;
and the main steam temperature unit is used for acquiring the main steam temperature of the steam turbine and the gas exhaust temperature of the gas turbine, stopping adopting a gas turbine initial temperature regulation mode when the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value, and adopting a gas exhaust temperature regulation mode instead.
Optionally, in an embodiment of the present invention, the second adjusting module includes:
the exhaust temperature unit is used for acquiring the current load value of the gas turbine, keeping the gas exhaust temperature unchanged and reducing the current load value of the gas turbine and the angle of the inlet guide vane;
and the guide vane angle unit is used for stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limit value.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method when executing the program.
The present invention also provides a computer readable storage medium storing a computer program for executing the above method.
According to the invention, through a comprehensive complementary regulation mode, the problem of efficiency sacrifice of a simple equal gas exhaust temperature regulation mode is solved, and the problem of exceeding of the main steam temperature of a simple equal gas turbine initial temperature regulation mode is avoided, so that the economy of partial load of the gas-steam combined cycle unit is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of adjusting inlet guide vanes of a gas turbine in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a T3 adjustment process in an embodiment of the invention;
FIG. 3 is a flow chart of a T4 adjustment part process in an embodiment of the invention;
FIGS. 4A-4E are graphs illustrating partial performance parameters as a function of gas turbine load for embodiments of the present invention;
FIG. 5 is a schematic illustration of a gas turbine inlet guide vane adjustment apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a first adjusting module according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a second adjusting module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a method and a device for adjusting inlet guide vanes of a gas turbine.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 1 is a flow chart of a method for adjusting inlet guide vanes of a gas turbine according to an embodiment of the present invention, and an execution body of the method for adjusting inlet guide vanes of a gas turbine according to an embodiment of the present invention includes, but is not limited to, a computer. The method shown in the figure comprises the following steps:
step S1, acquiring the initial temperature and the gas exhaust temperature of a gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
s2, keeping the temperature of the gas exhaust unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value;
and step S3, acquiring the load value of the gas turbine, and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
The factors influencing the performance of the gas-steam combined cycle unit are mostly related to the gas turbine, and the operation performance of a steam bottom cycle system (comprising a waste heat boiler and a steam turbine) is also mainly limited by the exhaust parameters of the gas turbine. Most gas turbines in service are equipped with adjustable compressor Inlet Guide Vanes (IGVs). In the case of a change in the load of the gas turbine, the regulation has a great influence on the performance of the gas turbine, i.e. on the IGV. The IGV adjusting mode is divided into a simple equal gas turbine initial temperature (T3) adjusting mode and a simple equal gas exhaust temperature (T4) adjusting mode, wherein the first mode is to adjust the position of the inlet guide vane IGV according to T3, and the second mode is to adjust the position of the inlet guide vane IGV according to T4.
Further, taking a certain type of combined cycle unit as an example, fig. 4A-4E are graphs of partial performance parameters of the gas top cycle system, the steam bottom cycle system and the combined cycle unit along with the load of the gas turbine under two regulation modes of simple equal T3 regulation and simple equal T4 regulation. The performance parameters and the performance curves of the combined cycle units of different types are different and should be based on reality.
Specifically, under a simple equal T3 adjustment mode, the change of T3 and T4 in the load reduction process is divided into 2 phases: in stage 1, the gas turbine load is reduced from 100% to 80% by reducing the air flow drawn by the compressor by closing down the IGV angle, as shown by the A- & gtB- & gtC curves marked with & lt & gt in FIG. 4A and FIG. 4B. During this process, T3 remains the design value unchanged. T4 increases continuously with decreasing IGV angle; when the gas turbine load drops to 80%, T4 reaches a maximum, i.e., a limit. The IGV angle is no longer closed, otherwise T4 would be over-heated. Stage 2 is then entered. In stage 2, as shown by the c→d→e→f→g curves marked with +.in fig. 4A and 4B, the IGV angle is kept constant, the load is reduced by adjusting T3, and at this time the amount of synthesis gas entering the combustion chamber is reduced, so that both T3 and T4 are reduced. Thus, when T3 is adjusted, T3 is unchanged and then decreases, and T4 is increased and then decreases as the gas turbine load decreases.
Furthermore, under the simple equal T4 regulation mode, the change of T3 and T4 in the load reduction process is divided into 2 stages: stage 1, as shown by the A- > H- > I- > D curves labeled ■ in FIG. 4A and FIG. 4B, from rated load, adapts to load changes by closing down the IGV angle as the gas turbine load decreases, to maintain T4 as the design value, and slows down the downward trend of T3. After the load drops to 70%, the IGV angle reaches a minimum and cannot be closed any more. In stage 2, as shown by the d→e→f→g curves labeled ■ in fig. 4A and fig. 4B, as the load decreases, both T3 and T4 decrease. Thus, when T4 is adjusted, T4 is first unchanged and then decreased as the gas turbine load decreases, and T3 is first slowly decreased and then rapidly decreased.
As can be seen from fig. 4C, when the gas turbine load is reduced from 100% to 40%, the IGV closing angle is smaller when adjusted by T3 alone than when adjusted by T4 alone, due to the limit of the maximum turbine exhaust temperature.
At a certain height Wen Duancha of the heat recovery boiler HRSG, the main steam temperature of the steam turbine is subject to the gas turbine exhaust temperature T4, and therefore the change law of the main steam temperature as the gas turbine load decreases is about the same as the change law of T4. As can be seen from the A- & gtB- & gtC curves marked with & lt, & gt in FIG. 4D, when the load of the gas turbine is reduced in a simple T3 regulation mode, the temperature of main steam is increased rapidly along with the increase of T4, and serious overtemperature is easy to occur.
From the curves marked with ∈and ■ in fig. 4E, it can be seen that the system efficiency (a→b→c→d→e→f→g) is slightly higher for the simple equal T3 adjustment than for the simple equal T4 adjustment (a→h→i→d→e→f→g). However, when the temperature of the main steam is regulated by the simple T3, the main steam is easy to be seriously overheated, so that a simple T4 regulation mode is generally adopted in the industry.
However, in the simple T 4 In the regulation mode, the pressure ratio is reduced due to the reduction of the air quantity of the compressor under the partial load, the enthalpy drop at the turbine end is reduced due to the reduction of the pressure at the turbine inlet, so that the actual combustion temperature under the partial load working condition is lower than the basic load, and the turbine inlet temperature is far lower than the highest temperature which can be reached, so that the temperature bearing capacity of the turbine blades is not fully utilized under the partial load in practice.
As an embodiment of the present invention, as shown in fig. 2, maintaining the initial temperature of the gas turbine unchanged, and reducing the angle of the inlet guide vanes of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value includes:
step S21, maintaining the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine;
and S22, acquiring the main steam temperature of the steam turbine and the gas exhaust temperature of the gas turbine, and stopping adopting a gas turbine initial temperature adjustment mode and adopting a gas exhaust temperature adjustment mode when the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value.
As an embodiment of the present invention, as shown in fig. 3, maintaining the temperature of the gas exhaust unchanged, reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value includes:
step S31, obtaining a current load value of the gas turbine, keeping the temperature of the gas exhaust unchanged, and reducing the current load value of the gas turbine and the angle of an inlet guide vane;
and S32, stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limit value.
It can be seen from fig. 4A to fig. 4E that when a simple equal T4 adjustment mode is adopted, a certain space of unit efficiency is sacrificed in a high load section, which is disadvantageous to unit economy. Comprehensively considering the problem that the temperature of main steam of a pure equal T3 regulation mode is easy to exceed standard and the problem that the efficiency of the pure equal T4 regulation mode is sacrificed, the invention adopts a comprehensive complementary scheme of equal T3 regulation and equal T4 regulation: when the load is reduced from 100%, adopting an equal T3 regulation mode; when the main steam temperature reaches the maximum limit value (point C ' marked by #) in fig. 4A-4E or the gas exhaust temperature reaches the maximum limit value (point C marked by #) in fig. 4A-4E, taking the main steam temperature as a turning point, adopting an equal T4 regulation mode when continuously reducing load, as shown by the curves A-B-C '/C-D-E-F-G in fig. 4A, A-B-C '/C-D ' →E-F-G in fig. 4B, A-B-C '/C-J-K-L-M in fig. 4C, A-B-C '/C-J-K-L-G in fig. 4D, and A-B-C '/C-D-E-F-G in fig. 4E.
In addition, when the comprehensive complementary scheme is adopted, the maximum limit value of the main steam temperature and the maximum limit value of the T4 are given through theoretical calculation and combination with practical tests, so that the turning point of switching from the equal T3 regulation mode to the equal T4 regulation mode is determined.
The invention comprehensively considers the problem that the main steam temperature of the equal T3 regulation mode is easy to exceed standard and the problem that the efficiency of the equal T4 regulation mode is sacrificed, and designs a novel gas turbine IGV regulation mode, namely an equal T3 regulation and equal T4 regulation comprehensive complementary scheme: when the load is reduced from 100%, adopting an equal T3 regulation mode; when the main steam temperature reaches the maximum limit value or T4 reaches the maximum limit value, taking the main steam temperature as a turning point, and adopting an equal T4 regulation mode when the load is continuously reduced.
According to the invention, through a comprehensive complementary regulation mode, the problem of efficiency sacrifice of a simple equal gas exhaust temperature regulation mode is solved, and the problem of exceeding of the main steam temperature of a simple equal gas turbine initial temperature regulation mode is avoided, so that the economy of partial load of the gas-steam combined cycle unit is improved.
FIG. 5 is a schematic structural view of a gas turbine inlet guide vane adjustment device according to an embodiment of the present invention, wherein the device includes:
a first adjusting module 10, configured to obtain a gas turbine initial temperature and a gas exhaust temperature of a gas turbine, keep the gas turbine initial temperature unchanged, and reduce an angle of an inlet guide vane of the gas turbine until a main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
a second adjustment module 20, configured to maintain the gas exhaust temperature unchanged, and reduce the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value;
and a third adjusting module 30, configured to obtain a load value of the gas turbine, and reduce the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
When a simple T4 adjusting mode is adopted, certain space of unit efficiency is sacrificed in a high-load section, and the economy of the unit is not good. Comprehensively considering the problem that the temperature of main steam of a pure equal T3 regulation mode is easy to exceed standard and the problem that the efficiency of the pure equal T4 regulation mode is sacrificed, the invention adopts a comprehensive complementary scheme of equal T3 regulation and equal T4 regulation: when the load is reduced from 100%, adopting an equal T3 regulation mode; when the main steam temperature reaches the maximum limit value (point C ' marked by #) in fig. 4A-4E or the gas exhaust temperature reaches the maximum limit value (point C marked by #) in fig. 4A-4E, taking the main steam temperature as a turning point, adopting an equal T4 regulation mode when continuously reducing load, as shown by the curves A-B-C '/C-D-E-F-G in fig. 4A, A-B-C '/C-D ' →E-F-G in fig. 4B, A-B-C '/C-J-K-L-M in fig. 4C, A-B-C '/C-J-K-L-G in fig. 4D, and A-B-C '/C-D-E-F-G in fig. 4E.
In addition, when the comprehensive complementary scheme is adopted, the maximum limit value of the main steam temperature and the maximum limit value of the T4 are given through theoretical calculation and combination with practical tests, so that the turning point of switching from the equal T3 regulation mode to the equal T4 regulation mode is determined.
As an embodiment of the present invention, as shown in fig. 6, the first adjusting module 10 includes:
a turbine initial temperature unit 11 for maintaining the gas turbine initial temperature unchanged and reducing the angle of the inlet guide vanes of the gas turbine;
and the main steam temperature unit 12 is configured to obtain a main steam temperature of the steam turbine and a gas exhaust temperature of the gas turbine, and stop adopting the gas turbine initial temperature adjustment mode and instead adopt the gas exhaust temperature adjustment mode when the main steam temperature of the gas turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value.
As an embodiment of the present invention, as shown in fig. 7, the second adjusting module 20 includes:
an exhaust temperature unit 21, configured to obtain a current load value of the gas turbine, keep the gas exhaust temperature unchanged, and reduce the current load value of the gas turbine and an angle of an inlet guide vane;
and a guide vane angle unit 22 for stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limit value.
Based on the same application conception as the gas turbine inlet guide vane adjusting method, the invention also provides a gas turbine inlet guide vane adjusting device. Because the principle of the gas turbine inlet guide vane adjusting device for solving the problem is similar to that of a gas turbine inlet guide vane adjusting method, the implementation of the gas turbine inlet guide vane adjusting device can refer to the implementation of the gas turbine inlet guide vane adjusting method, and the repetition is omitted.
According to the invention, through a comprehensive complementary regulation mode, the problem of efficiency sacrifice of a simple equal gas exhaust temperature regulation mode is solved, and the problem of exceeding of the main steam temperature of a simple equal gas turbine initial temperature regulation mode is avoided, so that the economy of partial load of the gas-steam combined cycle unit is improved.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method when executing the program.
The present invention also provides a computer readable storage medium storing a computer program for executing the above method.
As shown in fig. 8, the electronic device 600 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a display 160, a power supply 170. It is noted that the electronic device 600 need not include all of the components shown in fig. 8; in addition, the electronic device 600 may further include components not shown in fig. 8, to which reference is made to the related art.
As shown in fig. 8, the central processor 100, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, which central processor 100 receives inputs and controls the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information about failure may be stored, and a program for executing the information may be stored. And the central processor 100 can execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides an input to the central processor 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used for displaying display objects such as images and characters. The display may be, for example, but not limited to, an LCD display.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), random Access Memory (RAM), SIM card, or the like. But also a memory which holds information even when powered down, can be selectively erased and provided with further data, an example of which is sometimes referred to as EPROM or the like. Memory 140 may also be some other type of device. Memory 140 includes a buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage 142, the application/function storage 142 for storing application programs and function programs or a flow for executing operations of the electronic device 600 by the central processor 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging applications, address book applications, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. A communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, etc., may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and to receive audio input from the microphone 132 to implement usual telecommunication functions. The audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 130 is also coupled to the central processor 100 so that sound can be recorded locally through the microphone 132 and so that sound stored locally can be played through the speaker 131.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. A method of gas turbine inlet guide vane adjustment, the method comprising:
acquiring the initial temperature and the gas exhaust temperature of a gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
maintaining the temperature of the gas exhaust unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limit value;
and obtaining the load value of the gas turbine, and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
2. The method of claim 1, wherein the maintaining the gas turbine initial temperature constant, decreasing the angle of the inlet guide vanes of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit comprises:
maintaining the initial temperature of the gas turbine unchanged, and reducing the angle of an inlet guide vane of the gas turbine;
and acquiring the main steam temperature of the steam turbine and the gas exhaust temperature of the gas turbine, stopping adopting a gas turbine initial temperature adjusting mode when the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limiting value, and adopting a gas exhaust temperature adjusting mode instead.
3. The method of claim 1, wherein the maintaining the gas exhaust temperature unchanged, decreasing the angle of the gas turbine inlet guide vanes until the angle of the inlet guide vanes reaches a preset angle limit comprises:
acquiring a current load value of the gas turbine, keeping the temperature of the gas exhaust unchanged, and reducing the current load value of the gas turbine and the angle of an inlet guide vane;
and stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limiting value.
4. A gas turbine inlet guide vane adjustment device, the device comprising:
the first adjusting module is used for acquiring the initial temperature and the gas exhaust temperature of the gas turbine, keeping the initial temperature of the gas turbine unchanged, and reducing the angle of the inlet guide vane of the gas turbine until the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value;
the second adjusting module is used for keeping the temperature of the gas exhaust unchanged and reducing the angle of the inlet guide vane of the gas turbine until the angle of the inlet guide vane reaches a preset angle limiting value;
and the third adjusting module is used for acquiring the load value of the gas turbine and reducing the load value of the gas turbine until the load value of the gas turbine reaches a preset load limit value.
5. The apparatus of claim 4, wherein the first adjustment module comprises:
the turbine initial temperature unit is used for keeping the initial temperature of the gas turbine unchanged and reducing the angle of an inlet guide vane of the gas turbine;
and the main steam temperature unit is used for acquiring the main steam temperature of the steam turbine and the gas exhaust temperature of the gas turbine, stopping adopting a gas turbine initial temperature regulation mode when the main steam temperature of the steam turbine or the gas exhaust temperature of the gas turbine reaches a preset temperature limit value, and adopting a gas exhaust temperature regulation mode instead.
6. The apparatus of claim 4, wherein the second adjustment module comprises:
the exhaust temperature unit is used for acquiring the current load value of the gas turbine, keeping the gas exhaust temperature unchanged and reducing the current load value of the gas turbine and the angle of the inlet guide vane;
and the guide vane angle unit is used for stopping reducing the angle of the inlet guide vane of the gas turbine when the angle of the inlet guide vane reaches a preset angle limit value.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any one of claims 1 to 3 when executing the computer program.
8. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program for executing the method of any one of claims 1 to 3.
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