Pollutant emission evaluation methods, systems, equipment and storage media for thermal power enterprises

Abstract

The present invention discloses a method, system, device and storage medium for evaluating pollutant emissions of thermal power enterprises. The method comprises: obtaining an organizational structure set of the SIS system included in the unit pollutant emission status supervision scope; obtaining the SO2, NO x and smoke emission standards; traverse and calculate the hourly average of pollutant emissions of all units in the organizational set, and determine the unit pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 After traversing all organizational structures, the plant-wide ultra-clean emission qualification rate is calculated; the plant-wide ultra-clean emission qualification rate is used to evaluate the pollutant emissions of the thermal power plant. This invention enables real-time calculation of the ultra-clean emission qualification rate of each unit and online monitoring of ultra-clean pollutant emissions, providing data support for thermal power companies to reduce pollutant emissions and improve the real-time, accuracy, and reliability of pollutant emission monitoring.

Description

Technical Field

[0001] The present invention belongs to the technical field of computer electric signal processing, and in particular relates to a method, system, equipment and storage medium for evaluating pollutant emissions from thermal power enterprises. Background Art

[0002] Thermal power generation has long accounted for about 70% of the total power generation and is an important part of the current energy structure. However, as one of the key exhaust gas emission industries, thermal power plants have their own uniqueness in production processes, pollution production links, pollution prevention and control measures, etc. Therefore, it is of great significance for thermal power plants to carry out self-monitoring of pollution emissions. Ultra-clean emissions of pollutants, also known as ultra-low emissions, refer to the use of integrated system technology for efficient and coordinated removal of multiple pollutants by coal-fired boilers in thermal power plants during power generation and end-of-pipe treatment, so that their atmospheric pollutant emission concentrations basically meet the emission limits of coal-fired units, that is, the emission concentrations of sulfur dioxide, nitrogen oxides, and smoke (baseline oxygen content 6%) do not exceed 35mg / m 3 , 50mg / m 3 , 5mg / m 3 The ultra-clean emission qualification rate is a key technical indicator for evaluating pollutant emissions from thermal power plants, and is of particular significance for the assessment of pollutant emissions from thermal power plants. In particular, the use of computer technology to process electrical signals corresponding to pollutant emissions from thermal power plants has become an urgent challenge facing existing technologies, particularly in the area of ​​rapid, accurate, and reliable online processing. Summary of the Invention

[0003] The purpose of the present invention is to provide a method, system, equipment and storage medium for evaluating pollutant emissions from thermal power plants, which can evaluate the pollutant emissions of thermal power plants online and realize online monitoring of ultra-clean pollutant emissions from thermal power plants. The results of this method are accurate and reliable.

[0004] In order to achieve the above object, the present invention has the following technical solutions:

[0005] A method for evaluating pollutant emissions from thermal power plants comprises the following steps:

[0006] Obtain the organizational set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards;

[0007] Traverse and calculate the hourly average pollutant emissions of all units in the organizational set, and determine the unit pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净, calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0008] After traversing all organizational structures, the ultra-clean emission qualification rate of the entire plant is calculated; the pollutant emissions of the thermal power plant are evaluated based on the ultra-clean emission qualification rate of the entire plant.

[0009] As a further improvement of the present invention, obtaining the set of organizations included in the SIS system within the unit pollutant emission status supervision scope specifically includes:

[0010] Get the current date of the organization and the date of the last organization;

[0011] If the current date of obtaining the organization is not equal to the date of the last time the organization was obtained, the organization is retrieved from the database again;

[0012] Then we get the set of organizations that include the SIS system in the supervision scope of the unit pollutant emission status.

[0013] As a further improvement of the present invention, the SO2, NO x and smoke emission standards, specifically including:

[0014] Get the SO2, NO of each unit in the organizational set x , List of smoke emission standards;

[0015] Determine the effective dates of the emission standards in turn, and take the one with an effective date less than or equal to the current date and closest to the current date as the criterion for determining if the pollutant exceeds the standard.

[0016] As a further improvement of the present invention, the ultra-clean emission qualification rate is calculated according to the judgment result, comprising the following steps:

[0017] Get the unit operating status;

[0018] If the unit is judged to be in operation, the pollutant is judged to be in excess of the standard and the ultra-clean emission qualification rate is calculated based on the judgment result; otherwise, the judgment of this unit is terminated and the next unit is judged to be in excess of the standard and the ultra-clean emission qualification rate is calculated;

[0019] Each time period, the SO2 emission concentration and NO x The historical interpolation of dust emission concentration is used to form a pollutant emission concentration sample set [ρ SO2 ,1,ρ NOx ,1,ρ ash ,1].....[ρ SO2 ,m,ρ NOx ,m,ρ ash,m], where m is the number of collected data, m=1,2,…n;

[0020] Calculate the hourly mean using the obtained pollutant emission concentration sample set;

[0021] Based on the hourly average: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 ;

[0022] Get the running time t of the computer group 运行 , obtain the duration t of the computer group's ultra-clean emissions exceeding the standard 超标 , ultra-clean emission qualification rate of computer group.

[0023] As a further improvement of the present invention, the ultra-clean emission qualification rate is calculated according to the judgment result, which specifically includes the following steps:

[0024] Get the start and stop status of the unit, and get the unit operation status measurement point label according to the pre-configured label mask, combined with the input parameters of the power plant pinyin code and unit number. Get the real-time value of the measurement point from the SIS system real-time database and set the unit operation status S 机组 =1, running state;

[0025] Determine if the unit operating status S 机组 =1, the hourly average emission concentration of pollutants of the unit is calculated, the pollutant exceeding standard status is determined, and the super-clean emission qualification rate is calculated based on the judgment result; otherwise, the determination of the unit pollutant exceeding standard status is terminated;

[0026] Get the pollutant emission concentration label name, according to the pre-configured SO2, NO x , smoke dust conversion emission concentration label mask, combined with the input parameters of the power plant pinyin code and unit number, to obtain the unit's pollutant conversion emission concentration label name, obtain the previous hour from the SIS system real-time database, and collect a historical interpolation value at each interval to form a pollutant emission concentration sample set;

[0027] Calculate the hourly average using the pollutant emission concentration sample set obtained in the previous hour. Write the hourly average pollutant emission concentration back to the SIS system real-time database, corresponding to the hourly average concentration tag:

[0028] Based on the hourly average: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash , and the ultra-clean emission state of pollutants S 超净 ;

[0029] Read the unit running time t from the indicator library 运行 ;

[0030] According to the ultra-clean emission status S of the unit 超净 =1, the start time and end time of the exceeding state, calculate the duration of the exceeding clean emission standard t according to the judgment result 超标 ;

[0031] Qualified rate of ultra-clean emission of pollutants of computer group:

[0032] As a further improvement of the present invention, according to the obtained hourly average: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , the specific judgment method is:

[0033] Time S SO2 =1, other cases: S SO2 =0

[0034] Time S nox =1, other cases: S nox =0

[0035] Time S ash =1, other cases: S ash =0

[0036] S 超净 =S SO2 |S nox |S ash .

[0037] As a further improvement of the present invention, calculating the plant-wide ultra-clean emission qualification rate includes the following steps:

[0038] Obtain the ultra-clean emission qualification rate of each unit in the whole plant;

[0039] Calculate the ultra-clean emission qualification rate of the whole plant:

[0040]

[0041] Where n is the number of units, P i is the installed capacity of unit i, P is the installed capacity of the entire plant, is the ultra-clean emission qualification rate of unit i.

[0042] A pollutant emission evaluation system for thermal power enterprises, comprising:

[0043] The acquisition module is used to obtain the organizational structure set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards;

[0044] The calculation module is used to traverse and calculate the hourly average of pollutant emissions of all units in the organizational set, and determine the unit's pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0045] The evaluation module traverses all organizational structures and calculates the ultra-clean emission qualification rate of the entire plant; the pollutant emissions of the thermal power plant are evaluated based on the ultra-clean emission qualification rate of the entire plant.

[0046] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method for evaluating pollutant emissions of thermal power enterprises are implemented.

[0047] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for evaluating pollutant emissions from thermal power enterprises.

[0048] The present invention has at least the following beneficial technical effects:

[0049] The method of the present invention, based on real-time data from the SIS system, determines the super-clean emission status of the unit pollutants in real time and calculates the super-clean emission qualification rate based on the judgment result according to the duration of the super-standard state. This helps power generation companies monitor the real-time super-standard state of the unit pollutant emissions, understand the unit pollutant emission situation, optimize the operation of the unit equipment, reduce pollutant emissions, and analyze the causes of super-standard state. Actual field application has proven that the method provided by the present invention accurately and reliably determines the super-clean emission status of the unit pollutants and calculates the super-clean emission qualification rate. It realizes the real-time calculation of the super-clean emission qualification rate of the thermal power unit pollutants, and can monitor the super-clean emission of pollutants online, providing data support for thermal power companies to reduce pollutant emissions and improve the real-time, accuracy, and reliability of pollutant emission monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 This is a general flow chart of a method for evaluating pollutant emissions from thermal power plants according to a preferred embodiment of the present invention;

[0052] Figure 2 This is a flow chart of the ultra-clean emission state determination steps of the present invention;

[0053] Figure 3 This is a tree structure diagram of the organization structure for ultra-clean emission of pollutants from power plants;

[0054] Figure 4 This is a schematic diagram of the structure of a pollutant emission evaluation system for thermal power enterprises according to a preferred embodiment of the present invention;

[0055] Figure 5 This is a schematic diagram of the structure of an electronic device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0057] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise indicated, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0058] Glossary:

[0059] SIS system is the abbreviation of "Supervisory Information System in Plant Level" in English, and its Chinese name is: plant-level monitoring information system.

[0060] like Figure 1 As shown, the present invention provides a method for evaluating pollutant emissions from thermal power plants, which realizes online monitoring of ultra-clean pollutant emissions from thermal power plants, comprising the following steps:

[0061] 1) Obtain the set of organizations that include the SIS system in the unit pollutant emission status supervision scope;

[0062] 2) Obtain SO2, NO of each unit in the organizational set x , smoke emission standards;

[0063] 3) Traverse and calculate the hourly average of pollutant emissions of all units in the organizational set, and determine the unit pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 ; Calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0064] 4) After traversing all organizational structures, calculate the ultra-clean emission qualification rate of the entire plant; evaluate the pollutant emissions of the thermal power plant based on the ultra-clean emission qualification rate of the entire plant.

[0065] The present invention can realize real-time calculation of the qualified rate of ultra-clean pollutant emissions of the unit and online monitoring of ultra-clean pollutant emissions, providing data support for thermal power companies to reduce pollutant emissions and improve the real-time, accuracy and reliability of pollutant emission monitoring.

[0066] Preferably, the method of obtaining the organizational structure set in step 1) specifically comprises the following steps:

[0067] Step S11: Obtain the current date of the organization and the date of the last acquisition of the organization;

[0068] Step S12: If it is determined that the current date of obtaining the organization is not equal to the date of last obtaining the organization, the organization is obtained again from the database.

[0069] As a preference, the step 2) obtains the SO2, NO x , smoke emission standards, specifically including the following steps:

[0070] Step S21: Obtain the SO2, NO x , List of smoke emission standards;

[0071] Step S22: determine the effective date of the emission standard in sequence, and take the one with an effective date less than or equal to the current date and closest to the current date as the pollutant exceeding standard judgment standard (ρ SO2标准 , ρ NOx标准 , ρ ash标准 );

[0072] As a preference, the step 3) traverses the organizational structure, calculates the hourly average of the pollutant emissions of the unit, and determines the unit pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S超净 , computer group ultra-clean emission qualified rate σ 超净 The specific steps include:

[0073] Step S31: Obtaining the unit operating status;

[0074] Step S32: If the unit operating status is judged to be "operating", continue to judge the pollutant exceeding standard status and calculate the ultra-clean emission qualification rate based on the judgment result; otherwise, end the judgment of this unit and go to step S31 to judge the pollutant ultra-clean emission status of the next unit and calculate the ultra-clean emission qualification rate.

[0075] Step S33: Collect the SO2 emission concentration (ρ) within the previous hour every 10 seconds. SO2 ), NO x Degree (ρ NOx ), smoke emission concentration (ρ ash ) historical interpolation to form a pollutant emission concentration sample set [ρ SO2 ,1,ρ NOx ,1,ρ ash ,1].....[ρ SO2 ,m,ρ NOx ,m,ρ ash ,m], where m is the number of collected data, m=1,2,…n;

[0076] Step S34: Using the pollutant emission concentration sample set [ρ SO2 ,1,ρ NOx ,1,ρ ash ,1].....[ρ SO2 ,m,ρ NOx ,m,ρ ash ,m], calculate the hourly mean, the calculation formula is:

[0077] Step S35: Hourly average value obtained according to step S34: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净

[0078] Time S SO2 =1, other cases: S SO2 =0

[0079] Time S nox =1, other cases: S nox =0

[0080] Time S ash =1, other cases: S ash =0

[0081] S 超净 =S SO2 |S nox |S ash

[0082] Step S36: Obtain the unit running time t 运行 , unit: hour;

[0083] Step S37: Obtain the duration t of the unit's ultra-clean emission exceeding standard state 超标 , unit: hour;

[0084] Step S38: Computer group ultra-clean emission qualification rate:

[0085] Preferably, the step 4) calculating the plant-wide ultra-clean emission qualification rate specifically comprises the following steps:

[0086] Step S41: Obtain the ultra-clean emission qualification rate of each unit in the entire plant;

[0087] Step S42: Calculate the plant-wide ultra-clean emission qualification rate:

[0088]

[0089] Where n is the number of units, P i is the installed capacity of unit i, P is the installed capacity of the entire plant, is the ultra-clean emission qualification rate of unit i.

[0090] The present invention will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0091] like Figure 3 As shown, in this embodiment, the organizational structure set is assumed to be {Power Plant Unit #1, Power Plant Unit #2}. The power plant pinyin code of Power Plant is "DL", the unit number of Power Plant Unit #1 is "1", the unit number of Power Plant Unit #2 is "2", the installed capacity of Power Plant Unit #1 is 300MW, and the installed capacity of Power Plant Unit #2 is 350MW. The current time is "January 17, 2022, 11:05:00". The unit emission standards of Power Plant Unit #1 and Power Plant Unit #2 in the SIS system are shown in Table 1:

[0092] Table 1

[0093] As attached Figure 1 、 2As shown, a method for evaluating pollutant emissions from thermal power plants of the present invention is described with reference to a specific embodiment, and includes the following steps:

[0094] Step 1: Obtain the set of organizations included in the SIS system's unit pollutant emission status supervision scope. Specifically, obtain the pre-configured power plants and their units for which unit pollutant ultra-clean emission status judgment is required from the database's "Organization" main table and "Organization-Unit" subtable. This includes the following steps:

[0095] Step S11: Obtain the current date as "January 17, 2021" and the date of the last organization obtained. Assume that the date of the last organization obtained is "January 16, 2021".

[0096] Step S12: If the current date for obtaining organizational structures is not equal to the date of the last organizational structure retrieval, the organizational structure list is retrieved from the database. Otherwise, the message "Organizations have been retrieved today!" is returned. This is done because the organizational structure of power generation enterprises is generally stable, so a single daily retrieval is sufficient. In this embodiment, the current date is equal to the date of the last organizational structure retrieval, and the organizational structure is not retrieved again.

[0097] Step 2: Obtain the pollutant emission standards for each unit in the organizational set {Unit 1 of a power plant, Unit 2 of a power plant}, specifically including the following steps:

[0098] Step S21: Obtain the emission standard list of a power plant unit #1 and a power plant unit #2 from the SIS database, i.e., the data in Table 1. The acquired data includes the power plant phonetic code (PlantPhonetic), organization name, unit number (UnitIndex), standard effective date, SO2 emission standard, NOx emission standard, and smoke emission standard.

[0099] Step S22: determine the effective dates of the emission standards in sequence, and take the one with an effective date less than or equal to the current date and closest to the current date as the criterion for determining if the pollutants exceed the standard.

[0100] Step 3: Traverse the organizational structure, calculate the hourly average of the pollutant emissions of the unit, and determine the unit's pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , computer group ultra-clean emission qualified rate σ 超净 In conjunction with the embodiment, step 3 specifically includes the following steps:

[0101] Step S31: Get the start and stop status of unit #1 of a power plant. According to the pre-configured label mask *.UT.N#US_S_Run, combined with the input parameters of the power plant pinyin code "DL" and the unit number "1", the unit operation status measurement point label is obtained as DL.UT.N1US_S_Run. Further, the real-time value of the measurement point is obtained from the SIS system real-time database. For example, if the real-time value of the measurement point is "running", the unit operation status S is set. 机组 =1(running state);

[0102] Step S32: Determine the operating status of the unit #1 of a power plant 机组 =1 (operating state), the hourly average emission concentration of pollutants of the unit is calculated, the pollutant exceeding standard state is determined, and the ultra-clean emission qualification rate is calculated based on the determination result; otherwise, the determination of the pollutant exceeding standard state of the unit #1 of a power plant is terminated and the process goes to step S31.

[0103] Step S33: Obtain the pollutant emission concentration label name, and use the pre-configured SO2 emission concentration label mask:

[0104] *.BT.N#BC_SO2_FGDOut0_Cal, NOx converted emission concentration label mask: *.BT.N#BS_NOx_SCROut0_Cal; smoke converted emission concentration label mask: *.BT.N#BC_Ash_CHIn0_Cal, combined with the input parameters of the power plant pinyin code "DL" and the unit number "1";

[0105] Get the unit's SO2 emission concentration conversion value tag: DL.BT.N1BC_SO2_FGDOut0_Cal, NOx emission concentration conversion value tag: DL.BT.N1BS_NOx_SCROut0_Cal, and smoke emission concentration conversion value tag: DL.BT.N1BC_Ash_CHIn0_Cal;

[0106] Step S34: Based on the pollutant emission concentration label name of the power plant unit #1 obtained in step S33, the pollutant emission concentration [ρ] is obtained from the SIS system real-time database from 10:00:00 on January 17, 2022 to 11:00:00 on January 17, 2022, and a historical interpolation is collected every 10 seconds. SO2 ,1,ρ NOx ,1,ρ ash ,1].....[ρ SO2 ,m,ρ NOx ,m,ρ ash ,m] sample set;

[0107] Step S35: Using step S34, the pollutant emission concentration in the previous hour [ρ SO2 ,1,ρ NOx ,1,ρ ash ,1].....[ρ SO2 ,m,ρ NOx ,m,ρ ash ,m] sample set, calculate the hourly mean,

[0108] The hourly average pollutant emission concentration is written back to the SIS system real-time database, corresponding to the hourly average concentration label:

[0109] DL.BT.N1BC_SO2_FGDOut_Cal, DL.BT.N1BS_NOx_SCROut_Cal, DL.BT.N1BC_Ash_CHIn_Cal;

[0110] Step S36: Hourly average value obtained in step S35: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash , and the ultra-clean emission state of pollutants S 超净 .

[0111] Combined with the real-time example, the hourly average value of SO2 pollutant emissions from unit #1 of a power plant 38.34 mg / m 3 >35 mg / m 3 , determine S SO2 =1 means exceeding the standard; NO x Hourly average mg / m 3 ,45.67mg / m 3 <50 mg / m 3 , determine S nox =0 is normal state, hourly average value of smoke 8.95 mg / m 3 >5 mg / m 3 , determine S ash =1 means exceeding the standard; S 超净 =S SO2 |S nox |S ash , determine S 超净 =1, the pollutant super-clean emission status of unit 1 of a power plant at 10:00:00 on January 17, 2021 is finally determined to be "exceeding the standard", and the data is written into the SIS system real-time library tag: DL.BT.N1BC_S_Run_Clean_CalA and the pollutant super-standard record table of the relational database;

[0112] Step S37: Read the operating time t of unit #1 of a power plant from the index database 运行 =10 hours;

[0113] Step S38: Based on the ultra-clean emission status S of the #1 unit of a power plant 超净 =1 (exceeding the standard) state start time and end time, calculate the ultra-clean emission exceeding standard duration t according to the judgment result 超标 , if the pollutant discharge exceeding the standard of unit #1 of a power plant was in the "normal" state from 0:00:00 on January 17, 2022 to 9:59:59 on January 17, 2022, and the pollutant discharge exceeding the standard of unit #1 was judged to be in the "exceeding standard" state from 10:00:00 on January 17, 2022 to 11:00:00 on January 17, 2022, then t 超标 =1 hour;

[0114] Step S39: Calculate the ultra-clean emission qualification rate of the #1 unit of a power plant:

[0115]

[0116] At this point, the calculation of the ultra-clean emission qualification rate of pollutants of the #1 unit of a certain power plant is completed, and the calculation of the ultra-clean emission qualification rate of pollutants of the #2 unit of a certain power plant begins, and the process goes to step S31;

[0117] Step 4: After the ultra-clean emission qualification rate of unit #2 of a power plant is calculated, calculate the ultra-clean emission qualification rate of the entire site. If the ultra-clean emission qualification rate of unit #2 of the power plant is 80%, then the ultra-clean emission qualification rate of a certain power pollutant is: After this task is completed, when the waiting time is greater than the preset delay time, the next task is executed and go to step 1.

[0118] In this embodiment, based on the SO2, NO x , real-time data on smoke emission concentration and unit operating status, combined with the unit pollutant emission standards, to achieve high-accuracy and high-timeliness automatic judgment and monitoring of the unit's pollutant exceeding standard status, and real-time calculation of the pollutant super-clean emission exceeding standard duration and super-clean emission qualification rate.

[0119] The method of the present invention enables remote online monitoring of super-clean emissions from power plants, improving the accuracy and reliability of decisions regarding excessive pollutant emissions at power generation companies. Simultaneously, the super-clean emissions status of power plants is recorded in a database, providing a basis for subsequent analysis and assessment of the causes of excessive pollutant emissions.

[0120] like Figure 4 As shown, another object of the present invention is to provide a pollutant emission evaluation system for thermal power enterprises, comprising:

[0121] The acquisition module is used to obtain the organizational structure set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards;

[0122] The calculation module is used to traverse and calculate the hourly average of pollutant emissions of all units in the organizational set, and determine the unit's pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 ; Calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0123] The evaluation module traverses all organizational structures and calculates the ultra-clean emission qualification rate of the entire plant; the pollutant emissions of the thermal power plant are evaluated based on the ultra-clean emission qualification rate of the entire plant.

[0124] like Figure 5 As shown, the third object of the present invention is to provide an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating pollutant emissions from thermal power enterprises when executing the computer program.

[0125] The method for evaluating pollutant emissions from thermal power plants comprises the following steps:

[0126] Obtain the organizational set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards;

[0127] Calculate the hourly average of pollutant emissions from the unit and determine whether the unit's pollutant emissions exceed the standard S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , traverse all organizations in the organizational set and calculate the ultra-clean emission qualification rate σ of all organizations 超净 , calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0128] After traversing all organizational structures of the organizational structure set, the ultra-clean emission qualification rate of the entire plant is calculated; and the pollutant emission situation of the thermal power plant is evaluated based on the ultra-clean emission qualification rate of the entire plant.

[0129] The fourth object of the present invention is to provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for evaluating pollutant emissions from thermal power enterprises are implemented.

[0130] The method for evaluating pollutant emissions from thermal power plants comprises the following steps:

[0131] Obtain the organizational set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards;

[0132] Calculate the hourly average of pollutant emissions from the unit and determine whether the unit's pollutant emissions exceed the standard S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , traverse all organizations in the organizational set and calculate the ultra-clean emission qualification rate σ of all organizations 超净 , calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ;

[0133] After traversing all organizational structures of the organizational structure set, the ultra-clean emission qualification rate of the entire plant is calculated; and the pollutant emission situation of the thermal power plant is evaluated based on the ultra-clean emission qualification rate of the entire plant.

[0134] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0135] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0136] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0137] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0138] In the embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the module division is merely a logical functional division, and other division methods may be used in actual implementation. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of this embodiment.

[0139] It is also obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0140] Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference to a figure in a claim should not be construed as limiting the claim to which it relates.

[0141] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in a system claim may also be implemented by a single unit or device through software or hardware. Second-order terms are used to indicate names and do not imply any particular order.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical methods of the present invention and are not limiting. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for evaluating pollutant emissions from thermal power plants, characterized in that: The following steps are involved: Obtain the organizational set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards; Traverse and calculate the hourly average pollutant emissions of all units in the organizational set, and determine the unit pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ; After traversing all organizations, calculate the super-clean emission qualification rate of the whole plant; evaluate the pollutant emission of the thermal power plant based on the super-clean emission qualification rate of the whole plant; The calculation of the ultra-clean emission qualification rate based on the judgment results refers to: Get the unit operating status; If the unit is judged to be in operation, the pollutant is judged to be in excess of the standard and the ultra-clean emission qualification rate is calculated based on the judgment result; otherwise, the judgment of this unit is terminated and the next unit is judged to be in excess of the standard and the ultra-clean emission qualification rate is calculated; The calculation of the ultra-clean emission qualification rate according to the judgment result specifically includes the following steps: Get the start and stop status of the unit, and get the unit operation status measurement point label according to the pre-configured label mask, combined with the input parameters of the power plant pinyin code and unit number. Get the real-time value of the measurement point from the SIS system real-time database and set the unit operation status S 机组 =1 means running state; Determine if the unit operating status S 机组 =1, the hourly average emission concentration of pollutants of the unit is calculated, the pollutant exceeding standard status is determined, and the super-clean emission qualification rate is calculated based on the judgment result; otherwise, the determination of the unit pollutant exceeding standard status is terminated; Get the pollutant emission concentration label name, according to the pre-configured SO2, NO x , smoke dust conversion emission concentration label mask, combined with the input parameters of the power plant pinyin code and unit number, to obtain the unit's pollutant conversion emission concentration label name, obtain the previous hour from the SIS system real-time database, and collect a historical interpolation value at each interval to form a pollutant emission concentration sample set; Calculate the hourly average using the pollutant emission concentration sample set obtained in the previous hour. Write the hourly average pollutant emission concentration back to the SIS system real-time database, corresponding to the hourly average concentration tag: Based on the hourly average: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash , and the ultra-clean emission state of pollutants S 超净 ; Read the unit running time t from the indicator library 运行 ; According to the ultra-clean emission status S of the unit 超净 =1, the start time and end time of the exceeding state, calculate the duration of the exceeding clean emission standard t according to the judgment result 超标 ; Qualified rate of ultra-clean emission of pollutants of computer group: Based on the hourly average: Determine the pollutant exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , the specific judgment method is: Time S SO2 =1, other cases: S SO2 =0 Time S nox =1, other cases: S nox =0 Time S ash =1, other cases: S ash =0 S 超净 =S SO2 |S nox |S ash ; The set of organizations that obtain the SIS system and include it in the unit pollutant emission status supervision scope specifically includes: Get the current date of the organization and the date of the last organization; If the current date of obtaining the organization is not equal to the date of the last time the organization was obtained, the organization is retrieved from the database again; Then, the set of organizations that include the SIS system in the unit pollutant emission status supervision scope is obtained; The acquisition of SO2, NO x and smoke emission standards, specifically including: Get the SO2, NO of each unit in the organizational set x , List of smoke emission standards; Determine the effective dates of the emission standards in sequence, and take the one with an effective date less than or equal to the current date and closest to the current date as the criterion for determining if the pollutant exceeds the standard; Calculating the ultra-clean emission qualification rate of the entire plant includes the following steps: Obtain the ultra-clean emission qualification rate of each unit in the whole plant; Calculate the ultra-clean emission qualification rate of the whole plant: Where n is the number of units, P i is the installed capacity of unit i, P is the installed capacity of the entire plant, is the ultra-clean emission qualification rate of unit i.

2. A pollutant emission evaluation system for thermal power enterprises, according to the method for evaluating pollutant emissions of thermal power enterprises according to claim 1, characterized in that: include: The acquisition module is used to obtain the organizational structure set of the SIS system included in the unit pollutant emission status supervision scope; obtain the SO2, NO x and smoke emission standards; The calculation module is used to traverse and calculate the hourly average of pollutant emissions of all units in the organizational set, and determine the unit's pollutant emission exceeding the standard state S SO2 、S nox 、S ash and ultra-clean emission state S 超净 , calculate the ultra-clean emission qualification rate σ based on the judgment results 超净 ; The evaluation module traverses all organizational structures and calculates the ultra-clean emission qualification rate of the entire plant; the pollutant emissions of the thermal power plant are evaluated based on the ultra-clean emission qualification rate of the entire plant.

3. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating pollutant emissions from thermal power plants as described in claim 1 when executing the computer program.

4. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method for evaluating pollutant emissions from thermal power enterprises according to claim 1.

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