Method and system for monitoring thermal performance of group plant generator set
By comparing and analyzing the performance data of thermal power units, constructing indicator files and establishing a scoring mechanism, the problem of closed-loop management of thermal power unit performance monitoring was solved, enabling more accurate performance monitoring and optimization suggestions, and improving the level of unit operation and supervision.
Patent Information
- Application Number
- CN202511329124.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2025-12-30
AI Technical Summary
In existing technologies, the performance monitoring of thermal power units is mostly limited to a few macro indicators such as coal consumption and heat consumption, making it difficult to achieve closed-loop management from monitoring to treatment. Furthermore, due to differences in unit parameters and boundary conditions, it is difficult to unify the supervision of indicators.
A method for monitoring the thermal performance of generator sets in a group plant is adopted. By acquiring performance data of each unit and historical data of typical units in the industry, an index file is constructed, and comparative analysis is conducted to formulate a scoring mechanism, thereby realizing multi-dimensional performance monitoring and fault diagnosis.
It enables a comprehensive and objective comparative analysis of the performance of thermal power units, improves the accuracy and reliability of monitoring results, provides directions for performance optimization, and enhances the level of unit operation and supervision.
Smart Images
Figure CN121235271A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of thermal power generating unit operation, and relates to a method and system for monitoring thermal performance of generating units in a group of power plants. BACKGROUND
[0002] With the rapid development of the power industry, the scale of thermal power generating units is continuously expanding, the number of power plants under power generation groups is increasing, and the types, capacities, operation years, regional distribution and technical states of the units are significantly different. How to realize unified, efficient and accurate performance supervision of generating units in a group of power plants, and improve overall power generation efficiency and economy has become an important issue faced by power generation enterprises.
[0003] At present, the industry has certain technical accumulation in the performance monitoring of thermal power generating units, and common means include real-time data acquisition, performance calculation and consumption difference analysis based on DCS / SIS systems. Some enterprises have established single-unit performance monitoring systems, which can realize monitoring and analysis of thermal parameters of a certain unit. In addition, some power generation groups also try to establish a benchmarking system to compare different units horizontally, but are mostly limited to a few macro indicators such as coal consumption and heat consumption, and due to different unit parameters and boundary conditions, it is difficult to unify the index supervision and realize the whole closed-loop management from monitoring to management. SUMMARY
[0004] The purpose of the present application is to solve the problem in the prior art that performance monitoring of thermal power generating units is mostly limited to a few macro indicators such as coal consumption and heat consumption, and due to different unit parameters and boundary conditions, it is difficult to unify the index supervision and realize the whole closed-loop management from monitoring to management, and to provide a method and system for monitoring thermal performance of generating units in a group of power plants.
[0005] To achieve the above purpose, the present application adopts the following technical solution: A method for monitoring thermal performance of generating units in a group of power plants, comprising the following steps: obtaining performance data of each unit in the group of power plants and historical performance data of typical units in the industry; constructing an index file of performance data of each unit in the group of power plants; comparing and analyzing the performance data of each unit in the group of power plants with the historical performance data of typical units in the industry to obtain comparison and analysis results; performing fault diagnosis according to the comparison and analysis results and the index file of performance data of each unit in the group of power plants, and obtaining performance monitoring results according to the fault diagnosis results.
[0006] Further improvement of the present application is as follows: The historical performance data of typical units in the industry include wide-load heat consumption rate, power supply coal consumption and minimum load rate of steam turbine units.
[0007] The index file of the performance data of each unit of the group power plant comprises: The index file comprises first-level indexes, second-level indexes and third-level indexes. The first-level indexes comprise unit power supply coal consumption. The second-level indexes comprise steam turbine body and auxiliary machine performance, boiler body and auxiliary machine performance and plant power rate. The third-level indexes comprise operating parameters affecting the steam turbine body and auxiliary machine performance, operating parameters affecting the boiler body and auxiliary machine performance and operating parameters affecting the plant power rate.
[0008] The performance comparison and analysis of the performance data of each unit of the group power plant and the historical performance data of typical units in the industry comprises: The performance data of the generator units of the group power plant in different life stages, different regions and different states are compared respectively.
[0009] When the performance comparison and analysis is performed, a scoring mechanism is formulated.
[0010] The content of the scoring mechanism comprises safety and economic influence degree, unit reliability, generation cost, accident probability, standard compliance, industry attention degree and involved unit quantity.
[0011] The score ratio of the safety and economic influence degree, unit reliability, generation cost, accident probability, standard compliance, industry attention degree and involved unit quantity in the scoring mechanism is 1:1:1:2:3:1:1.
[0012] A thermal performance monitoring system of a group power plant generator unit comprises: A data acquisition module is configured to acquire performance data of each unit of the group power plant and historical performance data of typical units in the industry. An index file construction module is configured to construct an index file of the performance data of each unit of the group power plant. A performance analysis module is configured to compare and analyze the performance data of each unit of the group power plant and the historical performance data of typical units in the industry, and acquire comparison and analysis results. A monitoring result acquisition module is configured to perform fault diagnosis according to the comparison and analysis results and the index file of the performance data of each unit of the group power plant, and acquire performance monitoring results according to the fault diagnosis results.
[0013] A terminal device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method of any one of the present application when executing the computer program.
[0014] A computer readable storage medium stores a computer program, and the computer program implements the steps of the method of any one of the present application when executed by a processor.
[0015] Compared with the prior art, the present application has the following beneficial effects: The present application discloses a kind of group plant generator unit thermal performance monitoring method, compare the performance data of each unit of group plant with the historical performance data of typical unit in industry, realize multidimensional comparison of horizontal and vertical, comparison result is more comprehensive and objective, when comparing and analyzing, the index file of the performance data of each unit of group plant is constructed, the performance result of analysis is automatically graded, it is convenient for priority processing according to problem decomposition result in later period, and provide direction for later performance optimization, improve unit performance supervision level and operation level.
[0016] Further, in the present application, when performance comparison and analysis are carried out, a scoring mechanism is established, and the scores corresponding to different indicators have different proportions, improving the accuracy and objectivity of the analysis results. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Fig. 1 The system structure diagram of the embodiments of the present application; Fig. 2 The system logic diagram of the embodiments of the present application. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art on the basis of the embodiments in the present application without creative labor are within the scope of protection of the present application.
[0021] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0022] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0024] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] The present application will be described in further detail below in conjunction with the drawings: Referring to Figs. 1-2 The embodiments of the present application disclose a group power plant generator unit thermal performance monitoring method, which is guided by international and domestic advanced same type unit benchmark indicators, improves the on-site management capability, establishes performance index files for the group power plant, combines with operation data to perform periodic comparison, finds the performance index deviation reasons, and performs processing, and establishes a management process based on problem classification: the first, second and third indicators are distinguished for the requirements of the state regulatory department, the power safety and the safe and economic stable operation of the power plant. The system and method can improve the technical index supervision capability of each power plant, and control in a reasonable range.
[0026] The group power plant generator unit thermal performance monitoring system and method are shared between groups of power plants, and the group power plant unit performance indicators are taken as objects to build a group power plant generator unit thermal performance monitoring system and method system, and economic and efficient operation of the group power plant unit is realized.
[0027] The thermal performance monitoring system of the group power generating unit is a computer production auxiliary system which takes the thermal cycle of the power plant as the research object, and integrates data discrimination, performance calculation, state monitoring, abnormal diagnosis, data cleaning, statistical regression, correlation analysis, mass storage and report.
[0028] The group realizes real-time monitoring, unified control, resource sharing and overall management of the group power generating unit, and improves the output capacity of the unit and the power generation efficiency.
[0029] Through the joint research and development of the group, a simple, practical, stable and efficient thermal performance monitoring system of the group power generating unit is developed.
[0030] Referring to Fig. 2 The embodiment of the present application integrates the performance test experts of the units in the group and forms a professional team. With the thermal performance monitoring system of the group power generating unit as a tool, the remote diagnosis of the output, the research on the thermal problems, the optimization of the operation and maintenance of the output, the improvement of the thermal system and the tapping of the output potential of the unit are carried out, so that the power generation capacity of the unit is maximized, improved and developed.
[0031] The mission of the thermal performance monitoring system and method of the group power generating unit is to be directly responsible for the operation index of the group unit, to completely solve the four disadvantages of lack of expert talents, slow diagnosis, insufficient preventive measures and untapped potential, and to improve the efficient and intelligent operation level of the power plant.
[0032] The method comprises the following steps: Step 1: Obtain the performance data of each unit of the group and the historical performance data of typical units in the industry; Specifically, the following steps are included: Collect the basic thermal performance data of the group, perform performance investigation, and compare multiple parameters.
[0033] Performance index benchmarking: collect the core parameters such as wide load heat consumption rate, power supply coal consumption, peak shaving capacity (such as minimum load rate) and peak shaving economy of typical steam turbine units at home and abroad, establish a database, compare and analyze the industry level, and identify the key short boards such as thermal cycle efficiency and flow efficiency.
[0034] Further, in the embodiment, the typical steam turbine units at home and abroad include: 300MW / 600MW / 1000MW supercritical, ultra-supercritical unit, secondary reheat unit Step 2: Construct the index file of the performance data of each unit of the group; Specifically, the following steps are included: In this embodiment, the index file includes first-level indexes, second-level indexes and third-level indexes. Further, the first-level indexes include unit power supply coal consumption.
[0035] Further, the second-level indexes include the overall performance of the steam turbine and its auxiliary machines, power generation coal consumption, the overall performance of the boiler and its auxiliary machines, and the plant power rate.
[0036] Further, the third-level indexes include parameters affecting the overall performance of the steam turbine and its auxiliary machines, the overall performance of the boiler and its auxiliary machines, and the plant power rate.
[0037] Step 3: Perform performance comparison and analysis on the performance data of the units of the group plants and the historical performance data of typical units in the industry to obtain comparison and analysis results. Specifically, the following steps are included: Operation mode benchmarking: Compare and analyze the steam turbine water quality requirements, operation mode requirements and maintenance measures of each plant; compare and analyze typical units of the efficiency retention test; and Table 1 shows the longitudinal and lateral comparison table of each index of the group plants.
[0038] Table 1 Longitudinal and Lateral Comparison Table of Each Index of the Group Plants
[0039] The design value, operation value, assessment value and current value in this table are filled according to the actual situation on site.
[0040] Establish a management process based on problem classification: distinguish the requirements of regulatory departments, major indexes and general problems of power safety and safe and stable operation of power plants; fully integrate into the existing production management and technical management processes of the shares and power plants for closed-loop management; and reflect part of the process in the technical management procedures of the shares, power plants and technical platforms.
[0041] Develop a scoring mechanism based on the index file in Step 2, combine with the unit equipment benchmark index (performance assessment value or design value), and develop this scoring system from the perspective of affecting unit performance (including boiler, steam turbine, generator body and auxiliary system).
[0042] The content of the scoring mechanism includes safety and economic impact, unit reliability, generation cost, accident probability, standard compliance, industry attention and the number of units involved, with a total score of 100 points. The score ratio of safety and economic impact, unit reliability, generation cost, accident probability, standard compliance, industry attention and the number of units involved in the scoring mechanism is 1:1:1:2:3:1:1. For details, see Table 2.
[0043] Table 2 Proposed in Quarterly Report or Annual Report for Comprehensive Evaluation of Group Plants
[0044] Step 4: According to the comparative analysis results and the index archives of the performance data of each unit of the group plant, fault diagnosis is performed, and performance monitoring results are obtained according to the fault diagnosis.
[0045] Specifically, the method comprises the following steps: Referring to Tables 3 to 5, the tables list common faults of the regenerative system and corresponding phenomena, and point out the causes of the events and the next actions to be taken. If problems are found during operation, the next action direction can be found by looking up the table.
[0046] Table 3: Phenomena and causes of performance reduction of regenerative system
[0047] Table 4: Solutions to faults of the heater
[0048] Table 5: Fault elimination manual
[0049] The embodiment also discloses a thermal performance monitoring system for a group plant generator unit, comprising: A data acquisition module is configured to acquire performance data of each unit of the group plant and historical performance data of typical units in the industry. An index archive construction module is configured to construct an index archive of the performance data of each unit of the group plant. A performance analysis module is configured to perform performance comparative analysis on the performance data of each unit of the group plant and the historical performance data of typical units in the industry, and obtain comparative analysis results. A monitoring result acquisition module is configured to perform fault diagnosis according to the comparative analysis results and the index archive of the performance data of each unit of the group plant, and obtain performance monitoring results according to the fault diagnosis.
[0050] The thermal performance monitoring system and method for a group plant generator unit disclosed by the application can collect performance index benchmark values of each unit of the group plant, calculate current operation values by using online data, perform benchmarking, find reasons for deviations of current performance indexes of the units, and improve the performance supervision level and operation level of the units.
[0051] An embodiment of the terminal device provided by the application provides a schematic diagram of the terminal device. The terminal device of the embodiment comprises a processor, a memory, and a computer program stored in the memory and executable on the processor. The processor implements the steps in each of the method embodiments when executing the computer program. Alternatively, the processor implements the functions of each module / unit in each of the device embodiments when executing the computer program.
[0052] The computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present application.
[0053] The terminal device can be a desktop computer, a notebook computer, a cloud server and the like having strong computing power. The terminal device can include, but is not limited to, a processor, a memory.
[0054] The processor is preferably a multi-core high-speed central processing unit (CPU).
[0055] The memory can be used to store the computer program and / or modules, and the processor realizes various functions of the terminal device by running or executing the computer program and / or modules stored in the memory, and calling data stored in the memory.
[0056] The modules / units integrated in the terminal device, if realized in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. The computer program can implement the steps of each method embodiment when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the contents included in the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
[0057] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A method for monitoring the thermal performance of a power plant generator set, characterized by, The method comprises the following steps: obtaining performance data of each unit of the group plant and historical performance data of typical units in the industry; constructing an index file of the performance data of each unit of the group plant; comparing and analyzing the performance data of each unit of the group plant with the historical performance data of typical units in the industry to obtain comparison and analysis results; performing fault diagnosis according to the comparison and analysis results and the index file of the performance data of each unit of the group plant, and obtaining performance monitoring results according to the fault diagnosis results.
2. The method of claim 1, wherein the method further comprises: The historical performance data of the typical units in the industry include wide-load heat consumption rate, power supply coal consumption and minimum load rate of steam turbine units.
3. The method of claim 1, wherein the method further comprises: The construction of the index file of the performance data of each unit of the group plant comprises: The index file includes first-level indexes, second-level indexes and third-level indexes; The first-level indexes include unit power supply coal consumption; The second-level indexes include steam turbine body and auxiliary machine performance, boiler body and auxiliary machine performance and plant power rate; The third-level indexes include operating parameters affecting the steam turbine body and auxiliary machine performance, operating parameters affecting the boiler body and auxiliary machine performance and operating parameters affecting the plant power rate.
4. The method of claim 1, wherein the method further comprises: The performance comparison and analysis of the performance data of each unit of the group plant with the historical performance data of typical units in the industry comprises: Comparing and analyzing the performance data of the generator units of the group plant in different life stages, different regions and different states respectively.
5. The method for monitoring the thermal performance of generator sets in a multi-plant facility according to claim 4, characterized in that, When performing the performance comparison and analysis, a scoring mechanism is established.
6. The method for monitoring the thermal performance of generator sets in a multi-plant facility according to claim 5, characterized in that, The content of the scoring mechanism includes safety and economic influence degree, unit reliability, generation cost, accident probability, standard compliance, industry attention degree and involved unit quantity.
7. The method of claim 1, wherein the method further comprises: The score ratio of the safety and economic influence degree, unit reliability, generation cost, accident probability, standard compliance, industry attention degree and involved unit quantity in the scoring mechanism is 1:1:1:2:3:1:
1.
8. A thermal performance monitoring system for a combined heat and power generator set, characterised in that, The method comprises: a data acquisition module for obtaining performance data of each unit of the group plant and historical performance data of typical units in the industry; an index file construction module for constructing an index file of the performance data of each unit of the group plant; a performance analysis module for comparing and analyzing the performance data of each unit of the group plant with the historical performance data of typical units in the industry to obtain comparison and analysis results; a monitoring result acquisition module for performing fault diagnosis according to the comparison and analysis results and the index file of the performance data of each unit of the group plant, and obtaining performance monitoring results according to the fault diagnosis results.
9. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the method according to any one of claims 1-7.
10. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 9. The computer program is executed by the processor to realize the steps of the method according to any one of claims 1-7.