CN114217575A - System for real-time calculation power plant environmental protection discharges - Google Patents

System for real-time calculation power plant environmental protection discharges Download PDF

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Publication number
CN114217575A
CN114217575A CN202111275272.9A CN202111275272A CN114217575A CN 114217575 A CN114217575 A CN 114217575A CN 202111275272 A CN202111275272 A CN 202111275272A CN 114217575 A CN114217575 A CN 114217575A
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Prior art keywords
divider
outputs
value
data
pulser
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CN202111275272.9A
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Inventor
沈捷
李玉成
杜毅
周建章
洪学健
童海涛
李源
池浩良
马浩禹
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Huaneng Shantou Haimen Power Generation Co Ltd
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Huaneng Shantou Haimen Power Generation Co Ltd
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Priority to CN202111275272.9A priority Critical patent/CN114217575A/en
Publication of CN114217575A publication Critical patent/CN114217575A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/33—Director till display
    • G05B2219/33273—DCS distributed, decentralised controlsystem, multiprocessor
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The invention relates to the technical field of environmental protection monitoring, in particular to a system for calculating environmental protection emission of a power plant in real time, which comprises the following steps: s1: acquiring data of a gas concentration measuring point, and inputting the data of the measuring point into a first selector; s2: when the unit is connected to the grid, the switching value module is switched on, the first selector outputs the data of the gas concentration measuring point to the accumulation adder, and the accumulation adder accumulates the data; s3: the accumulation adder outputs the accumulated value to the first divider for calculation; s4: the first divider outputs the calculation result to the second divider for calculation; s5: the second divider outputs the result as the current hour mean. The invention can be used for important data such as SO which needs to adopt an hour average value by calculating the environmental-friendly emission value in real time2Concentration, NOXConcentration, dust concentration, etc. The invention provides flexible, real-time and accurate emission data for a power plant through updating the algorithm based on the DCS control system on the premise of not increasing the equipment cost, and can be used as a reference for adjusting the output of the environmental protection equipment in time so as to achieve the environment-friendly design of deep excavationThe energy-saving capability and the function of meeting the environmental protection red line are ensured.

Description

System for real-time calculation power plant environmental protection discharges
Technical Field
The invention relates to the technical field of environmental protection monitoring, in particular to a system for calculating environmental protection emission of a power plant in real time.
Background
Under the background of more and more strict environmental requirements of the state at present, the emission requirement value of a power plant also needs to be accurate, such as SO2Concentration, NOXConcentration, dust concentration and the like can not exceed standards, the existing environmental protection emission data can only display the average value after hours, if the current average value data needs to be manually calculated, the data display is not timely and delayed, and the emission can not be accurately and timely adjusted to meet the environmental protection requirement. Therefore, a system capable of calculating the real-time value of the environmental emission in real time and accurately adjusting the data of the environmental emission mean value within the range required by the state in real time is needed.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a system for calculating the environmental-friendly emission of a power plant in real time.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a system for calculating environmental emission of a power plant in real time is characterized by comprising the following steps:
s1: acquiring data of a gas concentration measuring point, and inputting the data of the measuring point into a first selector;
s2: when the unit is connected to the grid, the switching value module is switched on, the first selector outputs the data of the gas concentration measuring point to the accumulation adder, and the accumulation adder accumulates the data;
s3: the accumulation adder outputs the accumulated value to the first divider for calculation;
s4: the first divider outputs the calculation result to the second divider for calculation;
s5: the second divider outputs the result as the current hour mean.
Preferably, the data obtained by S1 for the gas concentration measuring point comprises SO2Concentration, NOXConcentration, dust concentration.
Preferably, the first divider of S3 is to divide the accumulated value of the accumulation adder by the value 60 set by the second initialization simulation module.
Preferably, in S4, the first divider outputs the calculation result to the second divider, and the second divider calculates the calculation result of the first divider and the system time minute value recorded by the system time module, and the unit is minute.
Preferably, a time controller is arranged in front of the accumulation adder, and the time controller outputs a pulse every 60 minutes; the pulse passes through a first pulser, the first pulser outputs a second pulse and then enters a reset term of the accumulation adder, and the accumulation adder is reset once per hour to update the current calculated value.
Preferably, when the accumulation adder is calculated by the first divider, the accumulation adder enters the second selector, when the time controller outputs a pulse, the pulse passes through the first pulser, the first pulser outputs a second pulse and enters the second pulser, the second pulser outputs a 0.1 second pulse, the pulse output by the second pulser serves as a second selector criterion and meets a condition output numerical value, the second selector criterion and the second selector criterion are divided by 60 through the third divider, and the third divider outputs a result as a last hour average value.
Compared with the prior art, the gain effect of the invention is as follows:
the invention can accurately and real-timely adjust the environmental emission mean value within the range of national requirements by calculating the environmental emission value in real time, has simple and reliable system and strong practicability, can be used for important data needing adopting the hour mean value,such as SO2Concentration, NOXConcentration, dust concentration and the like, the invention provides a flexible, real-time and accurate emission data for the power plant only by the logic configuration of the power plant DCS control system on the premise of not increasing the equipment cost based on the DCS control system, and the emission data can be used as a reference for adjusting the output of the environmental protection equipment in time, so as to achieve the effects of deeply digging the energy-saving capability of the environmental protection equipment and ensuring the environmental protection red line is met.
Drawings
To illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The reference numbers illustrate:
1. gas concentration measuring point, 2, switching value module, 3, first selector, 4, first initialization simulation module, 5, accumulation adder, 6, algorithm initialization module, 7, time controller, 8, first pulser, 9, system time module, 10, second divider, 11, current hour mean value, 12, first divider, 13, second initialization simulation module, 15, second pulser, 16, second selector, 17, third initialization simulation module, 18, third divider, 19, last hour mean value
FIG. 1 is a schematic diagram of the modules of a system for real-time calculation of environmental emissions from a power plant in accordance with the present invention;
FIG. 2 is a logic diagram of a system for real-time calculation of environmental emissions from a power plant in accordance with the present invention;
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following are specific descriptions of the reference numerals: as shown in figure 1 of the drawings,
gas concentration measurement point 1-the presentation measurement point, was taken from the power plant related gas measurement point.
The switching value module 2 represents a power plant grid-connection switching value, and the switching value is triggered when the power plant is connected to the grid.
The first selector 3 represents a selector, the criterion condition is FLAG, and when the criterion condition FLAG is equal to 1, the output OUT of the selector is equal to YES; when the criterion condition FLAG is equal to 0, the output OUT of the selector is equal to NO; the first selector 3 takes the grid connection of the unit as a criterion condition.
The first initialization simulation module 4 outputs Out, which is a Value, as a set Value, and sets the Value 0, which indicates that the output is 0 through the first selector when the power plant is not grid-connected.
Accumulation adder 5, accumulation adder (RESETSUM), the algorithm accumulates until the order resets, the algorithm accumulates the number value every second;
when RUN is 1, the cumulative adder works, TEMP is OUT + GAIN IN1, and GAIN is 1 at this time;
when RSET is equal to 0, the accumulation adder works, and TEMP is equal to OUT;
when RSET is equal to 1, the accumulation adder is reset, TEMP is equal to IN 1;
where TEMP is local temporary data.
An algorithm initialization module 6, which is used as a function input switch of the logic algorithm;
when the value equals 1, the accumulation adder 5, the time controller 7 and the system time module 9 connected in the following work;
when the value is 0, the following accumulation adder 5, time controller 7, and system time module 9 stop operating.
Time controller 7-time controller (TIMEMON);
the time controller can be set to output pulses in any time period;
when RUN is 1, the time controller works;
this time controller module setting MIN 1-60 with no other parameter settings indicates that the FLG1 outputs pulses every 60 minutes, which may be implemented to output pulses every 60 minutes.
The first pulser 8, the pulser (oneschop), outputs the pulse signal of TAGE delay value, this time the first pulser 8 sets time 1, unit second, cooperates with the time controller to output the pulse reset accumulation adder.
A system time module 9, namely a system time, wherein when RUN is equal to 1, a system timer works;
the system time device takes MIN as an output item, namely the minute value of the system time as the output item.
The second divider 10, OUT ═ NUM ÷ DEN.
Current hour mean 11 — show current hour mean.
The first divider 12, OUT ═ NUM ÷ DEN.
The second initialization simulation module 13 outputs Out, Value as a set Value, which sets Value 60.
The second pulser 15, pulser (ONESHOP), outputs the pulse signal of the value of tag delay, and this time the second pulser 15 sets time 0.1, unit second, as the criterion signal condition of the selector 16.
A second selector 16, namely a selector, wherein the criterion condition is FLAG, and when the criterion condition is FLAG is 1, the output OUT of the selector is YES; when the criterion condition FLAG is 0, the output OUT of the selector is NO.
A third initialization simulation module 17 outputs Out as a set Value, which sets Value 60.
A third divider 18, OUT ═ NUM ÷ DEN.
Last hour mean 19 — show last hour mean.
Referring to fig. 1 and 2, the present invention is a system for calculating environmental emission of a power plant in real time, comprising the following steps:
s1: acquiring data of a gas concentration measuring point 1, and inputting the measuring point data into a first selector 3;
s2: when the unit is connected to the grid, the switching value module 2 is switched on, the first selector 3 outputs the data of the gas concentration measuring point 1 to the accumulation adder 5, and the accumulation adder 5 accumulates the data;
s3: the accumulation adder 5 outputs the accumulated value to the first divider 12 for calculation;
s4: the first divider outputs the calculation result to the second divider for calculation;
s5: the second divider 10 outputs the result as the current hour mean 11.
Preferably, the data obtained by S1 for gas concentration measuring point 1 includes SO2Concentration, NOXConcentration, dust concentration.
Preferably, the first divider 12 of S3 divides the accumulated value of the accumulation adder 5 by the value 60 set by the second initialization simulation module 13.
Preferably, in S4, the first divider 12 outputs the calculation result to the second divider 10, and the second divider 10 calculates the calculation result of the first divider 12 and the system time minute value recorded by the system time module 9, and the unit is minute.
Preferably, a time controller 7 is arranged before the accumulation adder 5, and the time controller 7 outputs a pulse every 60 minutes; the pulse passes through the first pulser 8, the first pulser 8 outputs a second pulse and then enters the reset term of the accumulation adder 5, and the accumulation adder 5 is reset every hour to update the current calculated value.
Preferably, when the accumulation adder 5 is calculated by the first divider 12 and enters the second selector 16, when the time controller 7 outputs a pulse, the pulse passes through the first pulser 8, the first pulser 8 outputs a pulse of one second and enters the second pulser 15, the second pulser 15 outputs a pulse of 0.1 second, the pulse output by the second pulser 15 serves as a criterion satisfying condition output value of the second selector 16, and is divided by 60 by the third divider 18, and the result is output as the last hour mean value 19 by the third divider 18.
Compared with the prior art, the gain effect of the invention is as follows:
the invention can accurately and real-timely adjust the environmental emission mean value within the range of national requirements by calculating the environmental emission value in real time, has simple and reliable system and strong practicability, and can be used for important data needing to adopt the hour mean value, such as SO2Concentration, NOXConcentration, dust concentration and the like, the invention provides a flexible, real-time and accurate emission data for the power plant only by the logic configuration of the power plant DCS control system on the premise of not increasing the equipment cost based on the DCS control system, and the emission data can be used as a reference for adjusting the output of the environmental protection equipment in time, so as to achieve the effects of deeply digging the energy-saving capability of the environmental protection equipment and ensuring the environmental protection red line is met.
Example 1
With SO2The measurement points are as examples:
s1: obtaining SO2Inputting the data of the gas concentration measuring point 1 into a first selector 3;
s2: when a unit is connected to the power grid, the switching value module 2 is switched on, the first selector 3 outputs the data of the gas concentration measuring point 1 to the accumulation adder 5, the data are accumulated by the accumulation adder 5, the accumulation adder 5 is provided with an algorithm initialization module 6, a time controller 7 is arranged in front of the accumulation adder 5, the time controller 7 sets MIN1 to 60 and has no other parameter setting, the time controller represents that the FLG1 outputs pulses every 60 minutes, and the time controller 7 outputs the pulses every 60 minutes; the pulse passes through a first pulser 8, the first pulser 8 outputs a second pulse and then enters a reset item of the accumulation adder 5, and the accumulation adder 5 is reset every hour to update the current calculated value;
s3: the accumulation adder 5 is an accumulated value per second, and the accumulation adder 5 outputs the accumulated value to the first divider 12 and divides the accumulated value of the accumulation adder 5 by a value 60 set by the second initialization simulation module 13;
s4: the first divider 12 outputs the calculation result to the second divider 10, and the second divider 10 calculates the calculation result of the first divider 12 and the system time minute value recorded by the system time module 9, wherein the unit is minute;
s5: the second divider 10 outputs the result as the current hour mean 11.
Example 2
With SO2The measurement points are as examples:
s1: obtaining SO2Inputting the data of the gas concentration measuring point 1 into a first selector 3;
s2: when the unit is connected to the power grid, the switching value module 2 is switched on, the first selector 3 outputs the data of the gas concentration measuring point 1 to the accumulation adder 5, the accumulation adder 5 carries out accumulation, and the accumulation adder 5 is provided with an algorithm initialization module 6;
s3: the accumulation adder 5 is an accumulated value per second, and the accumulation adder 5 outputs the accumulated value to the first divider 12 and divides the accumulated value of the accumulation adder 5 by a value 60 set by the second initialization simulation module 13;
s4: the first divider 12 outputs the result to the second selector 16;
s5: when the time controller 7 outputs a pulse, the pulse passes through the first pulser 8, the first pulser 8 outputs a pulse of one second to enter the second pulser 15, the second pulser 15 outputs a pulse of 0.1 second, the pulse output by the second pulser 15 meets the condition as the criterion of the second selector 16, and the pulse is divided by the value 60 set by the third initialization simulation module 17 through the third divider 18;
and S6, the third divider 18 outputs the result as the last hour mean value 19.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. A system for calculating environmental emission of a power plant in real time is characterized by comprising the following steps:
s1: acquiring data of a gas concentration measuring point, and inputting the data of the measuring point into a first selector;
s2: when the unit is connected to the grid, the switching value module is switched on, the first selector outputs the data of the gas concentration measuring point to the accumulation adder, and the accumulation adder accumulates the data;
s3: the accumulation adder outputs the accumulated value to the first divider for calculation;
s4: the first divider outputs the calculation result to the second divider for calculation;
s5: the second divider outputs the result as the current hour mean.
2. The system for calculating the environmental emission of power plant in real time as claimed in claim 1, wherein the data obtained from the gas concentration measuring point at S1 includes SO2Concentration, NOXConcentration, dust concentration.
3. The system of claim 1, wherein the first divider of the S3 is configured to divide the accumulated value of the accumulation adder by the value 60 set by the second initialization simulation module, the accumulation adder being configured to accumulate the value every second.
4. The system of claim 1, wherein the first divider outputs the calculation result to the second divider in S4, and the second divider calculates the calculation result of the first divider and the system time minute value recorded by the system time module in minutes.
5. The system for calculating the environmental-friendly emission of the power plant in real time as claimed in claim 1, wherein a time controller is arranged before the accumulation adder, and the time controller outputs a pulse every 60 minutes; the pulse passes through a first pulser, the first pulser outputs a second pulse and then enters a reset term of the accumulation adder, and the accumulation adder is reset once per hour to update the current calculated value.
6. The system of claim 1, wherein when the cumulative adder is counted by the first divider and enters the second selector, and when the time controller outputs a pulse, the pulse passes through the first pulser, the first pulser outputs a second pulse into the second pulser, the second pulser outputs a 0.1 second pulse, the second pulser outputs a pulse that satisfies the condition output value as the second selector criterion, and the second pulser divides the output value by 60 by the third divider, and the third divider outputs the result as the last hour-average value.
CN202111275272.9A 2021-10-29 2021-10-29 System for real-time calculation power plant environmental protection discharges Pending CN114217575A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1093132A (en) * 1964-08-20 1967-11-29 Aquitaine Petrole Accumulative flow calculator
CN106909801A (en) * 2017-04-17 2017-06-30 中国神华能源股份有限公司 Calculate the method and system of the effective small hourly value of gaseous contaminant
CN108628276A (en) * 2018-07-06 2018-10-09 山西大唐国际运城发电有限责任公司 Computational methods based on DCS system real-time display environmental protection examination data mean value
CN211553902U (en) * 2019-06-04 2020-09-22 太仓创造电子有限公司 On-line ambient air quality monitoring device
CN112881615A (en) * 2021-01-29 2021-06-01 太原理工大学 Experimental device and method for spatial distribution law of tail gas of trackless rubber-tyred vehicle in limited space
CN113069919A (en) * 2021-04-27 2021-07-06 国能南京电力试验研究有限公司 Method for calculating continuous hourly mean value of NOx concentration
CN113419036A (en) * 2021-07-22 2021-09-21 江苏省徐州环境监测中心 Portable flue gas monitoring data acquisition system, device and method based on 5G communication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1093132A (en) * 1964-08-20 1967-11-29 Aquitaine Petrole Accumulative flow calculator
CN106909801A (en) * 2017-04-17 2017-06-30 中国神华能源股份有限公司 Calculate the method and system of the effective small hourly value of gaseous contaminant
CN108628276A (en) * 2018-07-06 2018-10-09 山西大唐国际运城发电有限责任公司 Computational methods based on DCS system real-time display environmental protection examination data mean value
CN211553902U (en) * 2019-06-04 2020-09-22 太仓创造电子有限公司 On-line ambient air quality monitoring device
CN112881615A (en) * 2021-01-29 2021-06-01 太原理工大学 Experimental device and method for spatial distribution law of tail gas of trackless rubber-tyred vehicle in limited space
CN113069919A (en) * 2021-04-27 2021-07-06 国能南京电力试验研究有限公司 Method for calculating continuous hourly mean value of NOx concentration
CN113419036A (en) * 2021-07-22 2021-09-21 江苏省徐州环境监测中心 Portable flue gas monitoring data acquisition system, device and method based on 5G communication

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