CN113279824A - HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation - Google Patents
HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation Download PDFInfo
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- CN113279824A CN113279824A CN202110572955.4A CN202110572955A CN113279824A CN 113279824 A CN113279824 A CN 113279824A CN 202110572955 A CN202110572955 A CN 202110572955A CN 113279824 A CN113279824 A CN 113279824A
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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
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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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation, which comprises process equipment, wherein the process equipment comprises a control cabinet AP, an expansion cabinet, a power supply cabinet, a relay cabinet and a cable box, the control cabinet AP is connected with a plurality of engineer stations, an Application server and an OPC server through Automation Highway, the Application server and the OPC server are connected with a plurality of operator stations and diagnosis stations through Application Highway, in the invention, the current fixed value and the target value are output on a TSE control picture, the real-time comparison is carried out with the target value, the larger the absolute value of the difference value between each fixed value and the target value is, the larger the margin is, the operator can clearly know the range and the margin of each X-criterion control fixed value, the operator is greatly convenient to finely operate and control parameters, the flushing parameters can be more reasonably selected and the warm-up time can be arranged, the start-up time is saved, is convenient to use.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to an X-criterion fixed value real-time comparison system of an HMN steam turbine based on TSE stress estimation.
Background
The Siemens 660MW subcritical HMN steam turbine controls the starting of the steam turbine according to various limits generated by the thermal stress working condition of the steam turbine as a continuous criterion (X-criterion), the thermal stress must be kept within a specified limit value, and the service life of the steam turbine and the service life of a rotor are guaranteed. When the operation state changes, the steam parameters entering the steam turbine and the corresponding heat transfer quantity also change, in order to limit stress, whether the unit can accept the change of the operation mode is judged according to an adjustable temperature criterion X-criterion, the change is used as a starting condition to be sent to a steam turbine control function group SGC, the SGC continuously scans the X-criterion, and a corresponding control strategy is selected.
When the steam turbine is used, the X-criterion fixed value of each stage changes at any time according to the main reheat steam parameter, the high-medium pressure shaft temperature and the cylinder temperature, the X-criterion fixed value corresponding to each stage is unclear by a person on duty, a rule drawing or background inquiry is needed, the steam parameter and the warming-up time of each stage cannot be controlled, the control means is delayed, the starting control strategy has breakpoints, the starting time of a unit is long, and a large amount of fuel oil is consumed, so that a real-time comparison system of the X-criterion fixed value of the HMN steam turbine based on TSE stress estimation is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an HMN steam turbine X-standard fixed value real-time comparison system based on TSE stress estimation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the system for comparing the X-standard fixed values of the HMN steam turbine in real time based on TSE stress estimation comprises process equipment and is characterized in that the process equipment comprises a control cabinet AP, an expansion cabinet, a power supply cabinet, a relay cabinet and a cable box, wherein the control cabinet AP is connected with a plurality of engineer stations, an Application server and an OPC server through Automation high way, and the Application server and the OPC server are connected with a plurality of operator stations and diagnosis stations through Application high way.
Preferably, the Application Highway is connected with a third party interface.
Preferably, the number of engineer stations is two.
Preferably, the number of operator stations is four.
The application method of the HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation comprises the following steps:
s1, logically calculating 8X-criterion conditions through a TSE stress estimation system;
s2, when 8X-criterion conditions meet the conditions, the module turns red;
s3, collecting the maximum stress generated by the turbine component during the unsteady state operation through a turbine stress estimator-TSE;
s4, comparing the collected maximum stress value with a specified limit value to form X-standard limit curves of different temperature parameters;
and S5, forming a starting condition through the obtained X-criterion limit curve.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, eight X-criterion fixed values of X1, X2, X4, X5, X6, X7A, X7B and X8 are called internal operation data of a T-3000 control system TSE according to an original design curve, target values and actual values of 8X-criterion fixed values are displayed in real time at the lower right corner of a TSE picture, a watchman is clear of the X-criterion data, a flushing parameter is adjusted in advance according to the X fixed value, warm-up time is controlled, quick start of a unit is realized, start time of the unit can be greatly reduced, and energy consumption is saved. In addition, the difference value between each fixed value and each target value of each X-criterion is monitored during the normal operation period and the accident handling period of the unit, and the steam parameters are controlled at the first time to ensure the safe operation of the steam turbine;
2. in addition, the invention monitors the difference value of each fixed value and target value of each X-criterion during the normal operation period and the accident handling period of the unit, controls the steam parameters at the first time and ensures the safe operation of the steam turbine.
In the invention, the current fixed value and the target value are output on the TSE control picture and are compared with the target value in real time, the larger the absolute value of the difference value between each fixed value and the target value is, the larger the margin is, and the operator on duty can clearly control the fixed value range and the margin of each X-criterion, thereby greatly facilitating the operator on duty to finely operate and control parameters, more reasonably selecting the flushing parameters and arranging the warm-up time, saving the starting time and being convenient to use.
Drawings
FIG. 1 is a topological diagram of an HMN turbine X-criterion fixed value real-time comparison system based on TSE stress estimation according to the present invention;
FIG. 2 is a flow chart of the operation of the system for comparing X-criterion fixed values of an HMN steam turbine in real time based on TSE stress estimation according to the present invention;
FIG. 3 is a flow chart of the present invention;
FIG. 4 is a diagram illustrating the setting criteria of eight criteria in the present invention;
FIG. 5 is a TSE control screen before improvement in the present invention;
FIG. 6 is a diagram illustrating an improved TSE control screen according to the present invention;
FIG. 7 is a graph of the X1 criterion in the present invention;
FIG. 8 is a graph of the X2 criterion in the present invention;
FIG. 9 is a graph of the X4 criterion in the present invention;
FIG. 10 is a graph of the X5 criterion in the present invention;
FIG. 11 is a graph of the X6 criterion in the present invention;
FIG. 12 is a graph of the X7A criterion in the present invention;
FIG. 13 is a graph of the X7B criterion in the present invention;
FIG. 14 is a graph of the X8 criterion in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1 to 14, the system for comparing X-criteria fixed values of an HMN steam turbine in real time based on TSE stress estimation comprises process equipment, and is characterized in that the process equipment comprises a control cabinet AP, an expansion cabinet, a power supply cabinet, a relay cabinet and a cable box, the control cabinet AP is connected with a plurality of engineer stations, an Application server and an OPC server through Automation Highway, and the Application server and the OPC server are connected with a plurality of operator stations and a diagnosis station through Application Highway.
In the invention, the Application Highway is connected with a third party interface.
In the invention, the number of the engineer stations is two.
In the present invention, the number of the operator stations is four.
The application method of the HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation comprises the following steps:
s1, logically calculating 8X-criterion conditions through a TSE stress estimation system;
s2, when 8X-criterion conditions meet the conditions, the module turns red;
s3, collecting the maximum stress generated by the turbine component during the unsteady state operation through a turbine stress estimator-TSE;
s4, comparing the collected maximum stress value with a specified limit value to form X-standard limit curves of different temperature parameters;
and S5, forming a starting condition through the obtained X-criterion limit curve.
The working principle is as follows: the method comprises the steps of calling internal operation data of a T-3000 control system TSE (three-dimensional integrated service) according to an original design curve by eight X-criterion fixed values of X1, X2, X4, X5, X6, X7A, X7B and X8, displaying target values and actual values of 8X-criterion fixed values in real time at the lower right corner of a TSE picture, enabling a watchman to be clear of the X-criterion data, adjusting flushing parameters in advance according to the X fixed values, controlling warm-up time, achieving quick start of a unit, greatly reducing start time of the unit and saving energy consumption. In addition, the difference value between each fixed value and each target value of each X-criterion is monitored during the normal operation period and the accident handling period of the unit, and the steam parameters are controlled at the first time to ensure the safe operation of the steam turbine.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The system for comparing the X-standard fixed values of the HMN steam turbine in real time based on TSE stress estimation comprises process equipment and is characterized in that the process equipment comprises a control cabinet AP, an expansion cabinet, a power supply cabinet, a relay cabinet and a cable box, wherein the control cabinet AP is connected with a plurality of engineer stations, an Application server and an OPC server through Automation high way, and the Application server and the OPC server are connected with a plurality of operator stations and diagnosis stations through Application high way.
2. The system for comparing X-criterion fixed values of an HMN turbine under TSE stress estimation in real time according to claim 1, wherein the Application Highway is connected with a third party interface.
3. The system for real-time comparison of X-ray criterions of HMN turbines under TSE stress estimation according to claim 1, wherein the number of engineer stations is two.
4. The system for real-time comparison of X-ray definite values of HMN turbine under TSE stress estimation according to claim 1, wherein the number of operator stations is four.
5. The method for using the system for comparing the X-criterion fixed values of the HMN turbine under the TSE stress estimation in real time according to claim 1, is characterized by comprising the following steps:
s1, logically calculating 8X-criterion conditions through a TSE stress estimation system;
s2, when 8X-criterion conditions meet the conditions, the module turns red;
s3, collecting the maximum stress generated by the turbine component during the unsteady state operation through a turbine stress estimator-TSE;
s4, comparing the collected maximum stress value with a specified limit value to form X-standard limit curves of different temperature parameters;
and S5, forming a starting condition through the obtained X-criterion limit curve.
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| CN202110572955.4A CN113279824A (en) | 2021-05-25 | 2021-05-25 | HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation |
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| CN202110572955.4A CN113279824A (en) | 2021-05-25 | 2021-05-25 | HMN steam turbine X-criterion fixed value real-time comparison system based on TSE stress estimation |
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| JPS5444105A (en) * | 1977-09-14 | 1979-04-07 | Hitachi Ltd | Turbine starting method based on the preestimation calculation of thremal stress |
| JPH06241003A (en) * | 1993-02-19 | 1994-08-30 | Toshiba Corp | Starting method for steam turbine |
| CN103726888A (en) * | 2014-01-02 | 2014-04-16 | 上海电气电站设备有限公司 | Method for monitoring low cycle fatigue of steam turbine rotor on line |
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| CN112720356A (en) * | 2021-01-09 | 2021-04-30 | 河北邯峰发电有限责任公司 | Nondestructive dismounting tool for connecting bolt of steam turbine rotor coupling |
-
2021
- 2021-05-25 CN CN202110572955.4A patent/CN113279824A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5444105A (en) * | 1977-09-14 | 1979-04-07 | Hitachi Ltd | Turbine starting method based on the preestimation calculation of thremal stress |
| JPH06241003A (en) * | 1993-02-19 | 1994-08-30 | Toshiba Corp | Starting method for steam turbine |
| CN103726888A (en) * | 2014-01-02 | 2014-04-16 | 上海电气电站设备有限公司 | Method for monitoring low cycle fatigue of steam turbine rotor on line |
| CN106602571A (en) * | 2016-12-21 | 2017-04-26 | 国家电网公司 | Automatic voltage control method based on computer monitoring system |
| CN206574495U (en) * | 2017-02-21 | 2017-10-20 | 中核核电运行管理有限公司 | Digital control system in nuclear power plant interim significant data monitoring system during transforming |
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| CN109882254A (en) * | 2019-03-21 | 2019-06-14 | 上海汽轮机厂有限公司 | Control method of the Steam Turbine from start and stop |
| CN112720356A (en) * | 2021-01-09 | 2021-04-30 | 河北邯峰发电有限责任公司 | Nondestructive dismounting tool for connecting bolt of steam turbine rotor coupling |
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