CN114925549A - Method for correcting air consumption of compressed air in unit overall performance test - Google Patents

Method for correcting air consumption of compressed air in unit overall performance test Download PDF

Info

Publication number
CN114925549A
CN114925549A CN202210744266.1A CN202210744266A CN114925549A CN 114925549 A CN114925549 A CN 114925549A CN 202210744266 A CN202210744266 A CN 202210744266A CN 114925549 A CN114925549 A CN 114925549A
Authority
CN
China
Prior art keywords
compressed air
unit
air
consumption
under
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210744266.1A
Other languages
Chinese (zh)
Inventor
贾晨光
薛志恒
王慧青
白睿博
何涛
杨众乔
杜文斌
雷少博
赵永坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Thermal Power Research Institute Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN202210744266.1A priority Critical patent/CN114925549A/en
Publication of CN114925549A publication Critical patent/CN114925549A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/08—Thermal analysis or thermal optimisation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses a method for correcting air consumption of compressed air in a unit overall performance test, which comprises the following steps: A. before the unit overall performance test before the test, the theoretical air consumption of each compressed air user and equipment of the whole plant under rated load is obtained through design data and is divided into three types: compressed air for instruments, compressed air for miscellaneous use and compressed air for ash conveying; B. determining output guarantee values and heat rate guarantee values of the unit under a rated load working condition and a partial load working condition; C. calculating the air consumption of the unit in the compressed air under the partial load working condition; D. in subsequent performance test calculations, the calculation of the power consumption of the air compressor system under partial load conditions is calculated based on the calculated air consumption. The correction method provided by the invention can be used for correcting the factors influencing the air consumption of the compressed air to the design conditions, and is beneficial to comparing the overall performance test result of the thermal power generating unit with the design guaranteed value.

Description

Method for correcting air consumption of compressed air in unit overall performance test
Technical Field
The invention belongs to the field of thermal performance tests of thermal power generating units, and particularly relates to a method for correcting air consumption of compressed air in a unit overall performance test.
Background
In thermal power unit power plant equipment, the power consumption of auxiliary equipment of the power plant is an extremely important guarantee index in a thermal power unit performance assessment test, and has direct influence on the overall performance test result of the thermal power unit. The method is not only an important component of the unit power supply coal consumption, but also an important index reflecting the unit auxiliary equipment power consumption.
The compressed air system of the thermal power generating unit is provided with the compressed air storage tank, and the compressed air storage tank is generally calibrated by the pressure in the storage tank, so that the air consumption of the compressed air cannot be directly and effectively measured or counted. The air compressor system of the thermal power unit is used as a main auxiliary system of the thermal power unit, the power consumption value of the air compressor system is closely related to the air consumption of compressed air, and the design data only provides the air consumption of each compressed air user under the rated load. Since unit overall performance testing is often performed at multiple load points, a method is needed to determine compressed air consumption at part load conditions.
In summary, a correction method for the compressed air consumption under partial load working conditions is needed to make the air consumption of a compressed air system in the overall performance test of the thermal power generating unit closer to the actual air consumption, so that the overall performance test result of the thermal power generating unit is more accurate.
Disclosure of Invention
The invention aims to provide a method for correcting the air consumption of compressed air in a unit overall performance test. In the overall performance test of the thermal power generating unit, the method provided by the invention can be used for correcting the air consumption of the actual compressed air system to the corresponding design condition.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a method for correcting the air consumption of compressed air in a unit overall performance test comprises the following steps:
A. before the test, determining the theoretical air consumption of each compressed air user and equipment in the whole plant under the rated load;
B. determining output guarantee values and heat rate guarantee values of the unit under a rated load working condition and a partial load working condition;
C. calculating the air consumption of the unit in the compressed air under the partial load working condition;
D. in subsequent performance test calculations, the calculation of the power consumption of the air compressor system under part load conditions is calculated based on the calculated air consumption.
The invention is further improved in that in the step A, the theoretical air consumption of each compressed air user and equipment of the whole plant under rated load is obtained through design data.
In a further development of the invention, in step a, compressed air from the thermal power plant is used as instrument compressed air.
In a further development of the invention, in step a, the compressed air of the thermal power plant is used as the compressed air for general use.
The invention is further improved in that in step a, the compressed air of the thermal power plant is used as ash conveying compressed air.
The invention has the further improvement that in the step B, the output guaranteed value and the heat rate guaranteed value of the unit under the rated load working condition and the partial load working condition are determined according to the unit design information and the contract content.
In a further improvement of the invention, in step C, the gas consumption is calculated by formula (1):
Figure BDA0003719050780000031
wherein, F partial The unit is the air consumption of the unit for compressing air under the partial load working condition, and the unit is Nm 3/h; f instrument The unit is Nm3/h as the compressed air for instruments; f service The unit is Nm 3/h; f ash_handling The unit of the compressed air is Nm3/h, wherein the compressed air is the ash conveying air quantity under the rated load working condition; HR (human HR) partial The heat rate guarantee value under the partial load working condition is expressed in unit kJ/(kW.h); HR (human HR) rated The heat rate guarantee value under the rated load working condition is expressed in kJ/(kW.h); p is partial The output guarantee value under the partial load working condition is in kW; p rated The unit is kW which is a guaranteed output value under the rated load working condition.
The further improvement of the invention is that the unit overall performance test is carried out according to the steps A to D, and the power consumption of the compressed air system obtained by calculation can reflect the power consumption value of the system under the design condition under the partial load working condition.
The invention has at least the following beneficial technical effects:
in the overall performance test of the thermal power generating unit, the correction method provided by the invention can be used for correcting the factors influencing the air consumption of the compressed air system to the design conditions, so that the obtained air consumption of the compressed air system can reflect the air consumption under the design conditions, and the comparison of the overall performance test result of the thermal power generating unit and the design guarantee value is facilitated.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in a flow chart of the attached figure 1, the method for correcting the air consumption of the compressed air in the unit overall performance test provided by the invention comprises the following steps:
A. before the unit overall performance test, theoretical air consumption of each compressed air user and equipment of the whole plant under rated load working conditions is obtained through design data, and compressed air purposes of a general thermal power plant are mainly divided into three types: compressed air for instruments, compressed air for miscellaneous use, and compressed air for ash transportation (transportation of boiler fly ash). Entering the step B;
B. and determining output guaranteed values and heat rate guaranteed values of the unit under the rated load working condition and the partial load working condition according to the unit design data and the contract content. Entering the step C;
C. the air consumption of the unit for compressing air under the partial load working condition is calculated by the formula (1):
Figure BDA0003719050780000041
wherein, F partial The unit is the air consumption of the unit for compressing air under the partial load working condition, and the unit is Nm 3/h; f instrument The unit is Nm3/h as the compressed air for instruments; f service The unit is Nm3/h for the amount of general compressed air; f ash_handling The unit is Nm3/h, and the unit is ash conveying compressed air under the rated load working condition; HR (human HR) partial The heat rate guarantee value under the partial load working condition is expressed in kJ/(kW.h); HR (high Rate) method rated Is a heat rate guarantee value under rated load working condition in unitkJ/(kW.h); p partial The unit of the output guarantee value under the partial load working condition is kW; p is rated The unit is kW which is a guaranteed output value under the rated load working condition. Entering the step D;
D. in subsequent performance test calculations, the power consumption of the air compressor system under part load conditions was calculated based on F partial And (6) performing calculation. Entering a step E;
E. and D, performing the unit overall performance test according to the steps A to D, and under the partial load working condition, calculating the power consumption of the compressed air system to reflect the power consumption value of the system under the design condition.
Examples
An example of the calculation of the power consumption correction of the lighting system of a certain thermal power project is as follows:
TABLE 1 theoretical gas consumption of compressed air users and equipment in certain thermal power project under rated load
Figure BDA0003719050780000051
TABLE 2 theoretical gas consumption of compressed air users and equipment in a thermal power project under 60% rated load
Figure BDA0003719050780000061
As can be seen from Table 2, in this example, the theoretical air consumption of compressed air at 60% rated load is 40419.97Nm3/h, and in the calculation of the later performance test, the power consumption of the air compressor system under part load condition is calculated based on 40419.97Nm3/h, so that the power consumption of the compressed air system calculated by the test can reflect the power consumption value of the system under the design condition.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.

Claims (8)

1. A method for correcting the air consumption of compressed air in a unit overall performance test is characterized by comprising the following steps:
A. before the test, determining the theoretical air consumption of each compressed air user and equipment of the whole plant under rated load before the test of the overall performance of the unit;
B. determining output guarantee values and heat rate guarantee values of the unit under rated load working conditions and partial load working conditions;
C. calculating the air consumption of the unit for compressing air under partial load working conditions;
D. in subsequent performance test calculations, the calculation of the power consumption of the air compressor system under partial load conditions is calculated based on the calculated air consumption.
2. The method for correcting the air consumption of the compressed air in the unit overall performance test as claimed in claim 1, wherein in the step A, the theoretical air consumption of each compressed air user and equipment of the whole plant under the rated load is obtained through design data.
3. The method for correcting the air consumption of the compressed air in the unit overall performance test is characterized in that in the step A, the compressed air of the thermal power plant is used as the compressed air for instruments.
4. The method for correcting the air consumption of the compressed air in the unit overall performance test according to claim 1, wherein in the step A, the compressed air of the thermal power plant is used as the hybrid compressed air.
5. The method for correcting the air consumption of the compressed air in the unit overall performance test is characterized in that in the step A, the compressed air of the thermal power plant is used for conveying ash compressed air.
6. The method as claimed in claim 1, wherein in step B, the guaranteed output value and guaranteed heat rate value of the unit under the rated load condition and the partial load condition are determined according to unit design data and contract content.
7. The method for correcting the air consumption of the compressed air in the unit overall performance test is characterized in that in the step C, the air consumption is calculated by the formula (1):
Figure FDA0003719050770000021
wherein, F partial The unit is the air consumption of the unit for compressing air under the partial load working condition, and the unit is Nm 3/h; f instrument The unit is Nm3/h as the compressed air for instruments; f service The unit is Nm3/h for the amount of general compressed air; f ash_handling The unit of the compressed air is Nm3/h, wherein the compressed air is the ash conveying air quantity under the rated load working condition; HR (human HR) partial The heat rate guarantee value under the partial load working condition is expressed in kJ/(kW.h); HR (human HR) rated The heat rate guarantee value under the rated load working condition is expressed in kJ/(kW.h); p partial The unit of the output guarantee value under the partial load working condition is kW; p rated The unit is kW which is a guaranteed output value under the rated load working condition.
8. The method for correcting the air consumption of the compressed air in the unit overall performance test as claimed in claim 1, wherein the unit overall performance test is performed according to the steps a to D, and the calculated power consumption of the compressed air system can reflect the power consumption value of the system under the design condition under the partial load condition.
CN202210744266.1A 2022-06-28 2022-06-28 Method for correcting air consumption of compressed air in unit overall performance test Pending CN114925549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210744266.1A CN114925549A (en) 2022-06-28 2022-06-28 Method for correcting air consumption of compressed air in unit overall performance test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210744266.1A CN114925549A (en) 2022-06-28 2022-06-28 Method for correcting air consumption of compressed air in unit overall performance test

Publications (1)

Publication Number Publication Date
CN114925549A true CN114925549A (en) 2022-08-19

Family

ID=82815414

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210744266.1A Pending CN114925549A (en) 2022-06-28 2022-06-28 Method for correcting air consumption of compressed air in unit overall performance test

Country Status (1)

Country Link
CN (1) CN114925549A (en)

Similar Documents

Publication Publication Date Title
US8573037B2 (en) Method for determining emission values of a gas turbine, and apparatus for carrying out said method
CN109190967B (en) Carbon emission accounting method and system for thermal generator set
CN109992880B (en) Method, equipment and system for performance adaptation of gas turbine
CN112736268A (en) Control optimization method and system for prolonging service life of SOFC (solid oxide fuel cell) system
CN114925549A (en) Method for correcting air consumption of compressed air in unit overall performance test
CN116184840B (en) Micro-supercharging self-adaptive adjusting method, system and storage medium for hydraulic generator
Zaccaria et al. Gas turbine advanced power systems to improve SOFC economic viability
Peng et al. Notice of Retraction: Energy Consumption, Structural Breaks and Economic Growth: Evidence from China
CN115017728A (en) Power consumption correction method for air compressor system in unit overall performance test
CN114220999A (en) Air inlet control method, device and system storage medium of fuel cell system
CN111521430B (en) Waste heat boiler performance test method
CN112131514A (en) Fossil fuel combustion emission accounting method and device
CN115034082B (en) Oxidation fan electricity consumption correction calculation method in station service electricity consumption calculation of thermal power generating unit
KR101751853B1 (en) System for simulating performance of marine engine and simulation method thereof
CN111666664B (en) Assessment method for confidence capacity of newly-added energy element of electric-gas comprehensive energy system
CN109887613A (en) A kind of method and system calculating boiler efficiency
JP4657987B2 (en) Control device, method and program for distributed energy system
CN217380725U (en) Gas turbine air inlet stabilizing system
CN115034083B (en) Induced draft fan power consumption correction calculation method in station service power consumption calculation of thermal power generating unit
CN113834680B (en) Fault testing method, device and system for liquefied air energy storage efficiency
CN113721466B (en) On-line calculation method and device for heat value of coal as fired in boiler of coal-fired unit
CN113707915B (en) Water management control method and device for fuel cell stack
US9777637B2 (en) Gas turbine fuel flow measurement using inert gas
CN116522044B (en) Method, device, equipment and medium for accounting real-time carbon emission of coal-fired unit
CN114894511A (en) Energy efficiency testing method for non-condensing natural gas boiler

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination