CN118188175A - Gas-steam combined cycle unit running state monitoring and optimizing system - Google Patents
Gas-steam combined cycle unit running state monitoring and optimizing system Download PDFInfo
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- CN118188175A CN118188175A CN202410286997.5A CN202410286997A CN118188175A CN 118188175 A CN118188175 A CN 118188175A CN 202410286997 A CN202410286997 A CN 202410286997A CN 118188175 A CN118188175 A CN 118188175A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 97
- 238000005457 optimization Methods 0.000 claims abstract description 40
- 238000004458 analytical method Methods 0.000 claims abstract description 35
- 238000011156 evaluation Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 238000010248 power generation Methods 0.000 claims description 18
- 238000013461 design Methods 0.000 claims description 7
- 238000003745 diagnosis Methods 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000012549 training Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000010977 unit operation Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention relates to the technical field of gas turbine control, and discloses a system for monitoring and optimizing the running state of a gas-steam combined cycle unit, which comprises the following components: the SIS system acquires current real-time operation data of the unit from the sensor through a data network; the state monitoring and analyzing workstation is used for analyzing the current running state of the unit based on the real-time running data to generate a monitoring and analyzing result; operating an optimizing workstation, and adjusting the control of the unit based on a traditional gas-steam combined cycle unit control system according to the monitoring analysis result; the assessment workstation assesses and feeds back the adjustment result of the operation optimization workstation to the operation optimization workstation based on the real-time operation data and the monitoring analysis result. The invention can monitor the running state of the unit on line, control and adjust the running state of the unit according to the running state information of the unit, evaluate and feed back the running optimization effect to the running optimization workstation to feed back and adjust the running optimization operation, so that the unit can run safely, efficiently and stably.
Description
Technical Field
The invention relates to the technical field of gas turbine control, in particular to a system for monitoring and optimizing the running state of a gas-steam combined cycle unit.
Background
The heavy gas turbine power generation mode has the advantages of quick start and stop, quick load response speed and the like, and can provide support for the stability of a novel power system. The gas turbine generally adopts a gas-steam combined cycle power generation mode, exhaust gas after the gas turbine finishes working is led into a waste heat boiler, energy in the exhaust gas of the gas turbine is fully absorbed, and after the waste heat boiler absorbs heat, steam is generated to drive the turbine to do work, so that the power generation efficiency of the unit is improved. The operation state of the gas-steam combined cycle unit is monitored in real time, and the operation state is optimized and adjusted on line, so that the operation is very important for safe and efficient operation of the unit.
Control of a gas-steam combined cycle unit is generally divided into two parts: TCS (turbine control system) and DCS (distributed control system), wherein TCS is responsible for control of the gas turbine and DCS is responsible for control of the exhaust-heat boiler and the steam turbine. The TCS and the DCS are mutually matched and mutually communicated to jointly realize the control of the gas-steam combined cycle unit. However, the two can only stabilize each parameter of the gas-steam combined cycle unit near a set value through a preset control logic, the running state of the unit cannot be analyzed, and the running state of the unit cannot be optimized through control and adjustment, so that the unit can run more safely and efficiently.
Disclosure of Invention
In view of the above, in order to solve the defect that the conventional gas-steam combined cycle unit control system in the prior art cannot analyze the running state of the unit to adjust and optimize the running of the unit, the embodiment of the invention provides a gas-steam combined cycle unit running state monitoring and optimizing system.
The invention provides a gas-steam combined cycle unit running state monitoring and optimizing system, which comprises: SIS system, condition monitoring and analysis workstation, operation optimization workstation, assessment workstation, traditional gas-steam combined cycle unit control system, wherein:
The SIS system is used for acquiring current real-time operation data of the gas-steam combined cycle unit from the sensor through a data network and providing a data base for state monitoring analysis and operation optimization;
The state monitoring and analyzing workstation is used for analyzing the current running state of the unit based on the real-time running data acquired by the SIS system and generating a monitoring and analyzing result;
The operation optimizing workstation is used for receiving monitoring and analyzing results of the state monitoring and analyzing workstation and adjusting the control of the unit based on the traditional gas-steam combined cycle unit control system according to the monitoring and analyzing results;
The evaluation workstation is used for receiving real-time operation data of the unit and monitoring and analyzing results of the state monitoring and analyzing workstation from the SIS system, evaluating adjustment results of the operation optimizing workstation and feeding back evaluation results to the operation optimizing workstation.
According to the gas-steam combined cycle unit operation state monitoring and optimizing system provided by the embodiment of the invention, on the basis that the TCS and DCS of the traditional gas-steam combined cycle unit control system complete the basic control function, the operation state of the unit can be monitored on line, the operation optimizing effect is evaluated by controlling, adjusting and optimizing the operation state of the unit according to the acquired unit operation state information, the evaluation result is fed back to the operation optimizing workstation, and the operation optimizing operation is fed back and regulated, so that the unit is safe, efficient and stable to operate.
In an alternative embodiment, the system further comprises: database, history station, server, wherein:
The database is used for storing temporary data required by the operation of software and hardware of all equipment in the system;
The history station is used for storing history operation data of key parameters in the operation process of the gas-steam combined cycle unit in preset time;
The server is used for providing services and support for each device of the system.
The database provided by the embodiment of the invention can store temporary data required by software and hardware operation of all equipment in the system, basic data capable of supporting the software and hardware operation of each equipment and data generated in the operation process, the history station stores history operation data of key parameters in the operation process of the gas-steam combined cycle unit in preset time, the history operation data can be used for offline analysis of unit state, performance and the like after export, and the server can provide services and support for each equipment of the system.
In an alternative embodiment, the devices communicate in real time by constructing a local area network, including:
The control instructions obtained by calculation of the controllers in the database, the history station, the server, the SIS system and the traditional gas-steam combined cycle unit control system are communicated with each other through a data network;
the SIS system, the state monitoring and analyzing workstation and the evaluation workstation are communicated with each other through Ethernet, and the operation optimizing workstation and the traditional gas-steam combined cycle unit control system are communicated with each other through Ethernet.
According to the embodiment of the invention, different communication modes are adopted according to different equipment functions, so that the reliability of operation communication of the whole system is ensured.
In an alternative embodiment, the monitoring analysis results generated by the status monitoring and analysis workstation include: fault diagnosis result, unit power generation efficiency evaluation result, pollutant emission monitoring result and parameter deviation normal value alarm result.
In an alternative embodiment, the process of generating fault diagnosis results by the state monitoring and analysis workstation includes:
The state monitoring and analysis workstation embeds a digital model corresponding to the gas-steam combined cycle unit, the digital model is obtained through training according to historical operation data, and when deviation between real-time operation data of the unit obtained by an SIS system and an output value corresponding to the digital model exceeds a preset threshold value, faults are judged to occur in a part corresponding to the unit, and the position and the type of the faults are diagnosed.
In an alternative embodiment, the process of generating the unit power generation efficiency evaluation result by the state monitoring and analysis workstation includes: the state monitoring and analyzing workstation comprises the following steps of: and the fuel flow, the fuel heat value and the power generation power are filtered, and the real-time power generation efficiency of the unit is calculated by rolling, so that the power generation efficiency of the unit is estimated in real time.
In an alternative embodiment, the process of generating pollutant emission monitoring results from the condition monitoring and analysis workstation includes:
The state monitoring and analyzing workstation calculates and displays the average emission level of NOx under different time scales by acquiring the emission data of the NOx in real time.
In an alternative embodiment, the process of generating parameter deviation from normal alarm result by the state monitoring and analysis workstation includes:
The state monitoring and analyzing workstation internally stores design values of each operation key parameter in different load sections, when the real-time operation parameter of the unit deviates from the design value and exceeds a corresponding threshold value, the state monitoring and analyzing workstation reads alarm information in a traditional gas-steam combined cycle unit control system through the SIS system, and the alarm information sent by the state monitoring and analyzing workstation is summarized and classified with the alarm information of the traditional gas-steam combined cycle unit control system.
The embodiment of the invention detects and analyzes the running state of the unit from multiple dimensions through the state monitoring and analyzing workstation, and a data analysis basis is prepared for subsequent optimization control.
In an alternative embodiment, the operation optimization workstation adjusts the control of the unit, including: the method comprises the steps of unit protection alarm, gas turbine exhaust temperature adjustment, gas turbine inlet heating and cooling system control adjustment, superheated steam and reheat steam temperature control.
In an alternative embodiment, the feeding back the evaluation result to the operation optimization workstation includes: if the adjustment result of the operation optimization workstation is effective, continuing to adjust the operation state of the optimizing unit by the operation optimization workstation through control; if the adjustment result of the operation optimization workstation is not effective, the control adjustment amount of the operation optimization workstation is gradually reduced, and the control of the traditional gas turbine control system and the control of the waste heat boiler and the steam turbine control system is restored.
The evaluation workstation in the embodiment of the invention feeds the evaluation result back to the operation optimization workstation, and carries out feedback adjustment on the operation optimization operation, so that the unit is safe, efficient and stable to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of equipment connection of a gas-steam combined cycle unit operation state monitoring and optimizing system provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of equipment connection of another system for monitoring and optimizing the operating state of a gas-steam combined cycle unit according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a gas-steam combined cycle unit operation state monitoring and optimizing system, which is shown in fig. 1 and comprises an SIS system, a state monitoring and analyzing workstation, an operation optimizing workstation, an evaluation workstation and a traditional gas-steam combined cycle unit control system; wherein:
The SIS system (supervisory information SYSTEM AT PLANT LEVEL, factory level monitoring information system) is used for acquiring current real-time operation data of the gas-steam combined cycle unit from the sensor through the data network and providing a data base for state monitoring analysis and operation optimization; the state monitoring and analyzing workstation is used for analyzing the current running state of the unit based on the real-time running data acquired by the SIS system and generating a monitoring and analyzing result; the operation optimizing workstation is used for receiving the monitoring analysis result of the state monitoring and analysis workstation and adjusting the control of the unit based on the traditional gas-steam combined cycle unit control system according to the monitoring analysis result; and the evaluation workstation is used for receiving the real-time operation data of the unit and the monitoring analysis result of the state monitoring and analysis workstation from the SIS system, evaluating the adjustment result of the operation optimization workstation and feeding back the evaluation result to the operation optimization workstation.
According to the gas-steam combined cycle unit operation state monitoring and optimizing system provided by the embodiment of the invention, on the basis that the TCS and DCS of the traditional gas-steam combined cycle unit control system complete the basic control function, the operation state of the unit can be monitored on line, the operation optimizing effect is evaluated by controlling, adjusting and optimizing the operation state of the unit according to the acquired unit operation state information, the evaluation result is fed back to the operation optimizing workstation, and the operation optimizing operation is fed back and regulated, so that the unit is safe, efficient and stable to operate.
In an embodiment, as shown in fig. 2, the system provided in the embodiment of the present invention further includes: the system comprises a database, a history station and a server, wherein the database is used for storing temporary data required by software and hardware operation of all equipment in the system, basic data capable of supporting the software and hardware operation of each equipment and data generated in the operation process; the history station is used for storing history operation data of key parameters in the operation process of the gas-steam combined cycle unit in preset time, and can be used for analyzing the state, performance and the like of the unit offline after being exported; and the server is used for providing services and support for each device of the system.
In the embodiment of the invention, each device performs real-time communication by constructing a local area network, for example, the local area network can be constructed by means of Ethernet, WIFI, GPRS and the like, and each device in the local area network can adopt bus type, star type, tree type, mesh type and other network topologies. Specific:
The control instructions obtained by calculation of the controllers in the database, the history station, the server, the SIS system and the traditional gas-steam combined cycle unit control system are communicated with each other through a data network; the system comprises an SIS system, a state monitoring and analyzing workstation and an evaluation workstation, wherein the state monitoring and analyzing workstation, the evaluation workstation and the operation optimizing workstation are communicated with the TCS and the DCS of the traditional gas-steam combined cycle unit control system through Ethernet, the data in the data network cannot be directly acquired without communication through a data network, the data communication quantity in the data network is reduced, the probability of the attack of the data network is reduced, and the reliability of the operation communication of the whole system is ensured.
Specifically, in the embodiment of the present invention, the monitoring analysis result generated by the state monitoring and analysis workstation includes: fault diagnosis result, unit power generation efficiency evaluation result, pollutant emission monitoring result and parameter deviation normal value alarm result. Wherein:
A process for generating fault diagnosis results by a state monitoring and analysis workstation, comprising: the state monitoring and analysis workstation embeds the digital model that gas-steam combined cycle unit corresponds, the digital model trains according to historical operation data and obtains, and after the deviation of real-time operation data of unit that SIS system gathered and digital model correspond output value exceeds the threshold value of presetting, the part that the unit corresponds appears the trouble to diagnose the position and the type that the trouble takes place.
The process for generating the unit power generation efficiency evaluation result by the state monitoring and analyzing workstation comprises the following steps: the state monitoring and analyzing workstation comprises the following steps of: and the fuel flow, the fuel heat value and the power generation power are filtered, and the real-time power generation efficiency of the unit is calculated by rolling, so that the power generation efficiency of the unit is estimated in real time.
A process for generating pollutant emission monitoring results at a condition monitoring and analysis workstation, comprising: the state monitoring and analysis workstation calculates and displays the average emission level of NOx at different time scales (such as the current time, the past one hour, the zero point of the current day to the current time, etc.) by acquiring the emission data of the NOx in real time.
A process for generating parameter deviation from normal alarm results by a condition monitoring and analysis workstation, comprising: the state monitoring and analyzing workstation stores design values of various operation key parameters (such as gas turbine exhaust temperature, gas turbine rotating speed, gas turbine vibration size, overheat and reheat steam temperature and the like) in different load sections, when the real-time operation parameters of the unit deviate from the design values and exceed corresponding thresholds (wherein the design values are provided by manufacturers and the corresponding thresholds are reasonably set according to actual operation conditions), the state monitoring and analyzing workstation reads alarm information in a traditional gas-steam combined cycle unit control system through an SIS system, and the alarm information sent by the state monitoring and analyzing workstation is summarized and classified with the alarm information of the traditional gas-steam combined cycle unit control system. It should be noted that, because TCS and DCS in the control system of the conventional gas-steam combined cycle unit have their own alarm functions, and various alarms often occur during the running process of the unit, the state monitoring and analyzing workstation reads the alarm information in TCS and DCS through the SIS system, and the alarm information sent by the state monitoring and analyzing workstation and the alarm information carried by TCS and DCS are summarized and displayed in stages.
In addition, the state monitoring and analyzing workstation provided by the embodiment of the invention is provided with the important alarm pages and the alarm pages, and the important alarm information obtained by summarizing and grading is uniformly displayed on the important alarm pages, so that operators can be helped to screen the important alarm information; and displaying all alarm information obtained by summarizing the state monitoring and analysis workstation on the alarm page, wherein an operator can check all alarms in the running process of the unit on the alarm page. The above functions are merely illustrative, and not limiting.
In the embodiment of the invention, the operation optimization workstation adjusts the control of the unit and comprises the following steps: the method comprises the steps of unit protection alarm, gas turbine exhaust temperature adjustment, gas turbine inlet heating and cooling system control adjustment, superheated steam and reheat steam temperature control.
Specifically, for example: when the state monitoring and analyzing workstation detects that a certain device has faults, the state monitoring and analyzing workstation can send out suggestions such as alarm prompt, unit load reduction, quick load shedding of the unit, even machine tripping and the like according to the severity of the faults; the method comprises the steps of adjusting the exhaust temperature set value of the gas turbine in the TCS at partial load, such as increasing the exhaust temperature set value of the gas turbine in a safety range, so as to improve the generating efficiency of the unit; the air inlet is properly heated according to the actual working condition of the unit so as to improve the generating efficiency of the unit, prevent the inlet of the air compressor from icing, and the like; when the unit approaches temperature control, air intake cooling is carried out, so that the load capacity of the unit is improved; and a feedforward signal is applied to the control of the temperature of the superheated steam and the reheat steam according to the load change condition of the unit, the opening degree of the water spray temperature reducing and regulating valve is regulated in advance before the steam temperature is changed, the control effect of the superheated steam temperature and the reheat steam temperature is improved, and the like.
The optimization measure of the operation optimization workstation is based on TCS and DCS, and partial equipment is needed to be added at times to realize the function of optimizing operation. And the control command to be regulated is communicated to the TCS and the DCS through the Ethernet, and the TCS and the DCS respectively control and regulate the gas turbine, the waste heat boiler and the steam turbine, so that the function of operation optimization is realized. It should be noted that the above functions are merely illustrative, and not limiting.
In the implementation of the invention, the evaluation workstation feeds back the evaluation result to the operation optimization workstation, such as whether the alarm of unit protection is normal, whether the regulation of the exhaust temperature of the gas turbine actually improves the efficiency of the unit, and the like, if the operation optimization regulation result of the operation optimization workstation is effective, the operation state of the unit is continuously regulated and optimized by the operation optimization workstation through control; if the adjustment result of the operation optimization workstation is not effective, the control adjustment amount of the operation optimization workstation is gradually reduced, and the control of the traditional gas turbine control system and the control of the waste heat boiler and the steam turbine control system is restored.
According to the embodiment of the invention, the evaluation workstation is set up to evaluate the operation optimization effect, the evaluation result is fed back to the operation optimization workstation, and the operation optimization operation is fed back and regulated, so that the unit can operate more safely, efficiently and stably.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A gas-steam combined cycle unit operating condition monitoring and optimizing system, comprising: SIS system, condition monitoring and analysis workstation, operation optimization workstation, assessment workstation, traditional gas-steam combined cycle unit control system, wherein:
The SIS system is used for acquiring current real-time operation data of the gas-steam combined cycle unit from the sensor through a data network and providing a data base for state monitoring analysis and operation optimization;
The state monitoring and analyzing workstation is used for analyzing the current running state of the unit based on the real-time running data acquired by the SIS system and generating a monitoring and analyzing result;
The operation optimizing workstation is used for receiving monitoring and analyzing results of the state monitoring and analyzing workstation and adjusting the control of the unit based on the traditional gas-steam combined cycle unit control system according to the monitoring and analyzing results;
The evaluation workstation is used for receiving real-time operation data of the unit and monitoring and analyzing results of the state monitoring and analyzing workstation from the SIS system, evaluating adjustment results of the operation optimizing workstation and feeding back evaluation results to the operation optimizing workstation.
2. The system of claim 1, further comprising: database, history station, server, wherein:
The database is used for storing temporary data required by the operation of software and hardware of all equipment in the system;
The history station is used for storing history operation data of key parameters in the operation process of the gas-steam combined cycle unit in preset time;
The server is used for providing services and support for each device of the system.
3. The system of claim 2, wherein the devices communicate in real time by constructing a local area network, comprising:
The control instructions obtained by calculation of the controllers in the database, the history station, the server, the SIS system and the traditional gas-steam combined cycle unit control system are communicated with each other through a data network;
the SIS system, the state monitoring and analyzing workstation and the evaluation workstation are communicated with each other through Ethernet, and the operation optimizing workstation and the traditional gas-steam combined cycle unit control system are communicated with each other through Ethernet.
4. A system according to any one of claims 1-3, wherein the monitoring analysis results generated by the condition monitoring and analysis workstation comprise: fault diagnosis result, unit power generation efficiency evaluation result, pollutant emission monitoring result and parameter deviation normal value alarm result.
5. The system of claim 4, wherein the process of generating fault diagnosis results by the condition monitoring and analysis workstation comprises:
The state monitoring and analysis workstation embeds a digital model corresponding to the gas-steam combined cycle unit, the digital model is obtained through training according to historical operation data, and when deviation between real-time operation data of the unit obtained by an SIS system and an output value corresponding to the digital model exceeds a preset threshold value, faults are judged to occur in a part corresponding to the unit, and the position and the type of the faults are diagnosed.
6. The system of claim 4, wherein the process of generating unit power generation efficiency assessment results by the condition monitoring and analysis workstation comprises: the state monitoring and analyzing workstation comprises the following steps of: and the fuel flow, the fuel heat value and the power generation power are filtered, and the real-time power generation efficiency of the unit is calculated by rolling, so that the power generation efficiency of the unit is estimated in real time.
7. The system of claim 4, wherein the process of generating pollutant emission monitoring results by the condition monitoring and analysis workstation comprises:
The state monitoring and analyzing workstation calculates and displays the average emission level of NOx under different time scales by acquiring the emission data of the NOx in real time.
8. The system of claim 4, wherein the process of the condition monitoring and analysis workstation generating parameter deviation from normal alarm results comprises:
The state monitoring and analyzing workstation internally stores design values of each operation key parameter in different load sections, when the real-time operation parameter of the unit deviates from the design value and exceeds a corresponding threshold value, the state monitoring and analyzing workstation reads alarm information in a traditional gas-steam combined cycle unit control system through the SIS system, and the alarm information sent by the state monitoring and analyzing workstation is summarized and classified with the alarm information of the traditional gas-steam combined cycle unit control system.
9. The system of claim 1, wherein the operation optimization workstation adjusts control of the unit, comprising: the method comprises the steps of unit protection alarm, gas turbine exhaust temperature adjustment, gas turbine inlet heating and cooling system control adjustment, superheated steam and reheat steam temperature control.
10. The system of claim 1 or 9, wherein the feeding back the evaluation result to the operation optimization workstation comprises: if the adjustment result of the operation optimization workstation is effective, continuing to adjust the operation state of the optimizing unit by the operation optimization workstation through control; if the adjustment result of the operation optimization workstation is not effective, the control adjustment amount of the operation optimization workstation is gradually reduced, and the control of the traditional gas turbine control system and the control of the waste heat boiler and the steam turbine control system is restored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410286997.5A CN118188175A (en) | 2024-03-13 | 2024-03-13 | Gas-steam combined cycle unit running state monitoring and optimizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410286997.5A CN118188175A (en) | 2024-03-13 | 2024-03-13 | Gas-steam combined cycle unit running state monitoring and optimizing system |
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| Publication Number | Publication Date |
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| CN118188175A true CN118188175A (en) | 2024-06-14 |
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| CN202410286997.5A Pending CN118188175A (en) | 2024-03-13 | 2024-03-13 | Gas-steam combined cycle unit running state monitoring and optimizing system |
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| CN (1) | CN118188175A (en) |
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- 2024-03-13 CN CN202410286997.5A patent/CN118188175A/en active Pending
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