CN111445140B - Fuel-related security event identification method, system and device - Google Patents
Fuel-related security event identification method, system and device Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 110
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
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- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The invention discloses a fuel related security event identification method, a system and a device, wherein real-time operation parameters of an SIS system are acquired; comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining fuel-related small micro-event information according to the comparison result; the fuel related small micro-event information is stored. By the method and the system for identifying the fuel related events, the real-time operation parameters of the SIS system are collected and compared with the preset characteristic parameter range of the small events, the fuel related small event information is obtained according to the comparison result, the fuel related small event information is stored, the small events of the fuel related safety are identified based on real-time data collection, and the on-site small events are controlled by a method for monitoring the small events so as to conduct safety precaution. The information is automatically collected and processed, so that the human interference is eliminated, the data reliability is high, the real-time online analysis of the data is realized, and the manual workload is reduced.
Description
Technical Field
The invention relates to the technical field of fuel safety analysis, in particular to a fuel related safety event identification method, and also relates to a fuel related safety event identification system and device.
Background
With the integration of the Chinese coal industry, the coal market is greatly changed, the supply of design coal types of partial thermal power plants is reduced, and the normal production of the power plants cannot be supported; the price of the designed coal of a part of thermal power plants is greatly increased, and the power plants seek to mix and burn other low-price coal types in view of cost reduction; in recent years, more power plants are searching for improving the degree of social coupling, and starting to blend and burn industrial waste, sludge generated by urban wastewater treatment, biomass coupling and the like, and fuel blending and burning become the normal state of a thermal power plant. How much the blended fuel affects the safety production of the power plant, whether it is controllable is a very important issue for the power plant.
The related safety events of the fuel are generally recorded manually, the information is incomplete, different emphasis of human habits exists, small and small events in the related safety events are rarely recorded, meanwhile, the safety accidents are sporadically large, and the safety problem of combustion blending cannot be completely and accurately evaluated.
Disclosure of Invention
In view of the foregoing, a first object of the present invention is to provide a fuel related security event identification method, so as to solve the problems of large subjectivity, imperfect information and the like when the existing fuel related security event is recorded manually, and a second object of the present invention is to provide a fuel related security event identification system and device.
In order to achieve the first object, the present invention provides the following technical solutions:
a fuel-related security event identification method, comprising:
collecting real-time operation parameters of an SIS system;
comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining fuel-related small micro-event information according to the comparison result;
and storing the fuel related small micro-event information.
Preferably, the comparing the collected real-time operation parameters of the SIS system with the preset feature parameter ranges of the small micro-events, and obtaining the fuel related small micro-event information according to the comparison result specifically includes:
when a coal feeder operation signal in real-time operation parameters of the SIS system is received, judging whether the flow of the coal feeder is smaller than a preset coal feeder flow value or whether the current of the coal feeder is smaller than a preset coal feeder current value;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
and/or judging whether the deviation value between the wall temperature of the combustor and the wall temperature of the preset combustor in the current working condition in the received real-time operation parameters of the SIS system is larger than the preset wall temperature deviation value;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
and/or judging a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than a preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than a preset drum water level fluctuation value;
and/or judging whether the wall temperature of the heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, judging that the SIS system is a wall temperature long-term overtemperature event.
Preferably, the comparing the collected real-time operation parameters of the SIS system with the preset feature parameter ranges of the small micro-events, and obtaining the fuel related small micro-event information according to the comparison result specifically includes:
judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is smaller than a second preset temperature and lasts for a second preset time, if yes, judging that the reheat steam temperature is a long-term low-temperature event;
and/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is smaller than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event.
Preferably, the comparing the collected real-time operation parameters of the SIS system with the preset feature parameter ranges of the small micro-events, and obtaining the fuel related small micro-event information according to the comparison result specifically includes:
and/or judging whether the average total fuel amount of the coal feeding amount of the real-time operation parameters of the SIS system received in the second preset time period is larger than the preset maximum fuel output, if so, judging that the fuel heat value is low.
Preferably, the fuel-related small micro-event information includes an event name, a type, an occurrence time, and an end time of the small micro-event.
The present invention provides a fuel-related security event identification system, the system comprising:
the real-time operation parameter acquisition module is used for acquiring real-time operation parameters of the SIS system;
the fuel-related small micro-event information processing module is used for comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-event and obtaining fuel-related small micro-event information according to the comparison result;
and the fuel related small micro-event information storage module is used for storing the fuel related small micro-event information.
Preferably, the fuel related small micro-event information processing module specifically includes:
the coal feeder coal breakage event identification unit is used for judging whether the coal feeder flow is smaller than a preset coal feeder flow value or whether the coal feeder current is smaller than a preset coal feeder current value when receiving a coal feeder operation signal in real-time operation parameters of the SIS system;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
and/or a burner flashback event identification unit, which is used for judging whether the deviation value between the wall temperature values of the burner in the received real-time operation parameters of the SIS system and the preset burner under the current working condition is larger than the preset wall temperature deviation value;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
and/or judging a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than a preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than a preset drum water level fluctuation value;
and/or a wall temperature long-term overtemperature event identification unit, which is used for judging whether the wall temperature of the heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, the wall temperature long-term overtemperature event is judged.
Preferably, the fuel related small micro-event information processing module specifically includes:
the steam temperature long-term low-temperature event identification unit is used for judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is smaller than a second preset temperature and lasts for a second preset time, if yes, the reheat steam temperature long-term low-temperature event is judged;
and/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is smaller than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event.
Preferably, the fuel related small micro-event information processing module specifically includes:
and the fuel heat value event identification unit is used for judging whether the average total fuel amount of the coal supply amount of the real-time operation parameters of the SIS system received in the second preset time period is larger than the preset maximum fuel output, and if so, judging that the fuel heat value event is low.
The invention provides an apparatus comprising a memory and a processor, wherein:
the memory is used for storing a computer program;
the processor is configured to execute the computer program to implement the fuel-related safety event identification method according to any of the above embodiments.
The fuel related security event identification method provided by the invention is characterized by collecting real-time operation parameters of an SIS system; comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining fuel-related small micro-event information according to the comparison result; the fuel related small micro-event information is stored.
By the method and the system for identifying the fuel related events, the real-time operation parameters of the SIS system are collected and compared with the preset characteristic parameter range of the small events, the fuel related small event information is obtained according to the comparison result, the fuel related small event information is stored, the small events of the fuel related safety are identified based on real-time data collection, and the on-site small events are controlled by a method for monitoring the small events so as to conduct safety precaution. The information is automatically collected and processed, so that the human interference is eliminated, the data reliability is high, the real-time online analysis of the data is realized, and the manual workload is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a fuel-related security event recognition method according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses a fuel-related security event identification method, which aims to solve the problems that the subjectivity is large, information is imperfect and the like when the existing fuel-related security event is recorded manually.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1, fig. 1 is a flow chart of a fuel-related security event recognition method according to an embodiment of the invention.
In a specific embodiment, the fuel related safety event identification method provided by the invention comprises the following steps:
and continuously acquiring real-time operation parameters in the site SIS system through an acquisition interface program, summarizing characteristic parameters of various small fuel safety events in the site, and forming an expert knowledge base. The characteristic parameters are recommended to be obtained by using a data statistical analysis method under typical fault conditions, and can be recorded by technicians when the field data volume is insufficient.
S11: collecting real-time operation parameters of an SIS system;
s12: comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining fuel-related small micro-event information according to the comparison result;
s13: the fuel related small micro-event information is stored.
The fuel-related small micro-events can comprise various events, and are set according to monitoring parameters required by the system, for example, when the change quantity of the coal level of the raw coal bin/the flow rate of the coal feeder in the real-time operation parameters of the SIS system is smaller than M0 and the coal level of the raw coal bin is larger than a preset coal level value, the coal-charging event of the raw coal bin is judged, wherein the typical coal-charging condition time value is smaller than M0 and smaller than the minimum value when normal coal is not charged, and the setting can be carried out according to the requirements. The method is mainly used for monitoring the flow of the coal feeder or the coal level of the raw coal bin and is used for representing the fluidity of the raw coal. And storing the fuel related small micro-events for other system call to perform data analysis.
By the method and the system for identifying the fuel-related events, the real-time operation parameters of the SIS system are collected and compared with the preset characteristic parameter range of the small events, the fuel-related small events information is obtained according to the comparison result, the fuel-related small events information is stored, the fuel-related small events of the fuel-related safety are identified based on real-time data collection, and the on-site fuel-related small events are controlled by a method for monitoring the fuel-related small events so as to conduct safety precaution. The information is automatically collected and processed, so that the human interference is eliminated, the data reliability is high, the real-time online analysis of the data is realized, and the manual workload is reduced.
In one embodiment, comparing the collected real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining the fuel related small micro-event information according to the comparison result, wherein the method specifically comprises the following steps:
when a coal feeder operation signal in real-time operation parameters of the SIS system is received, judging whether the coal feeder flow is smaller than a preset coal feeder flow value or whether the coal feeder current is smaller than a preset coal feeder current value;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
when the change quantity of the coal level of the raw coal bin/the flow of the coal feeder in the real-time operation parameters of the SIS system is smaller than M0 and the coal level of the raw coal bin is larger than a preset coal level value, judging that the coal is in a coal-covering event of the raw coal bin, wherein the typical coal-covering working condition time value is smaller than M0 and smaller than the minimum value when normal coal is not covered, and setting according to requirements. The method is mainly used for monitoring the flow of the coal feeder or the coal level of the raw coal bin and is used for representing the fluidity of the raw coal.
And/or judging whether the deviation value between the wall temperature values of the combustor in the received real-time operation parameters of the SIS system and the preset wall temperature value of the combustor under the current working condition is larger than the preset wall temperature deviation value;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
the method comprises the steps of collecting field data of wall temperature of a combustor, wind powder temperature of an air pipe and load, obtaining a corresponding function curve f (wind powder temperature, load) of the wall temperature of the combustor, the wind powder temperature of the air pipe and the load in a normal working condition and a confidence interval T1 through data driving, collecting wall temperature parameters of the combustor in a fault working condition, obtaining a preset wall temperature deviation value T0 through combining the confidence interval T1, collecting an air pipe pressure value, obtaining a fluctuation interval P1 of the normal working condition and a fluctuation value P2 in the fault working condition, and obtaining a preset fluctuation value P0, wherein P1< P0< P2. Judging whether the instantaneous fluctuation value of the primary air pipe pressure is more than P0 twice within a time delay preset time interval, wherein the preset time interval can be set to be one minute, and counting twice to prevent the false alarm caused by false collision of the measuring points.
And/or judging as a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than the preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than the preset drum water level fluctuation value;
the system is generally provided with a plurality of groups of hearth pressure measuring points and a plurality of groups of drum water level measuring points, any fluctuation of measuring points can trigger a criterion, the first preset time period is generally set to be within 10s, and the system is suitable for subcritical liquid slag discharging furnaces, and auxiliary judgment can be performed through sudden weakening of local fire detection intensity. The number of the hearth pressure measuring points and the steam drum water level measuring points is not limited, and three hearth pressure measuring points and two steam drum water level measuring points are preferably arranged, and in other embodiments, different settings can be carried out according to the needs, and the method is used for representing the combustion stability and the hearth coke dropping condition by monitoring hearth pressure fluctuation and steam drum water level fluctuation.
And/or judging whether the wall temperature of the heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, judging that the wall temperature is a long-term overtemperature event;
and/or judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is less than a second preset temperature and lasts for a second preset time, if yes, judging that the reheat steam temperature is a long-term low-temperature event;
the wall temperature of the heat exchange surface and the steam temperature of the reheat steam are monitored to represent the combustion speed and the reaction, and the first preset time and the second preset time are generally more than 30 minutes.
And/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is less than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event;
and/or judging whether the average total fuel amount of the coal feeding amount of the real-time operation parameters of the SIS system received in the second preset time period is larger than the preset maximum fuel output, if so, judging that the SIS system is a fuel heat value event.
When the average total fuel amount in the second preset time period is close to the maximum designed fuel output, the system fuel adjustment allowance is insufficient, the disturbance rejection capability is insufficient, the peak regulation response to the power grid is insufficient, the limited output or the reduced output operation is often caused, and the system is in an unsafe state and generally cannot be met due to the fact that the fuel heat value is too low. The second preset time period is typically set to 30 minutes.
Preferably, the fuel-related small micro-event information comprises event name, type, occurrence time and end time of the small micro-event, and the data is cleaned according to the working conditions excluding abnormal measuring points and abnormal working conditions.
Judging and controlling the small micro-events by a method for monitoring the small micro-events, and identifying the small micro-events based on real-time data acquisition; in other embodiments, the historical database may be invoked for back calculation, small micro-events on the historical data may be identified, and each small micro-event may be modeled by a data-driven, machine learning algorithm.
Based on the above method embodiment, the present invention further provides a system, which is mutually compared, the fuel-related security event recognition system includes:
the real-time operation parameter acquisition module is used for acquiring real-time operation parameters of the SIS system;
the fuel-related small micro-event information processing module is used for comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-event and obtaining fuel-related small micro-event information according to the comparison result;
and the fuel-related small micro-event information storage module is used for storing the fuel-related small micro-event information.
By the method and the system for identifying the fuel related events, the real-time operation parameters of the SIS system are collected and compared with the preset characteristic parameter range of the small events, the fuel related small event information is obtained according to the comparison result, the fuel related small event information is stored, the small events of the fuel related safety are identified based on real-time data collection, and the on-site small events are controlled by a method for monitoring the small events so as to conduct safety precaution. The information is automatically collected and processed, so that the human interference is eliminated, the data reliability is high, the real-time online analysis of the data is realized, and the manual workload is reduced.
Specifically, the fuel-related small micro-event information processing module specifically includes:
the coal feeder coal breakage event identification unit is used for judging whether the flow of the coal feeder is smaller than a preset coal feeder flow value or whether the current of the coal feeder is smaller than a preset coal feeder current value when receiving a coal feeder operation signal in real-time operation parameters of the SIS system;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
and/or a burner flashback event identification unit, which is used for judging whether the deviation value between the wall temperature values of the burner in the received real-time operation parameters of the SIS system is larger than the preset wall temperature deviation value or not;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
and/or judging as a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than the preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than the preset drum water level fluctuation value;
and/or a wall temperature long-term overtemperature event identification unit, which is used for judging whether the wall temperature of a heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, the wall temperature long-term overtemperature event is judged;
and/or a steam temperature long-term low-temperature event identification unit, which is used for judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is less than a second preset temperature and lasts for a second preset time, if yes, judging that the reheat steam temperature is a long-term low-temperature event;
and/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is less than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event;
and/or a fuel heat value event identification unit, which is used for judging whether the average total fuel amount of the coal feeding amount of the real-time operation parameters of the SIS system received in the second preset time period is larger than the preset maximum fuel output, if so, judging that the fuel heat value is low.
The invention also provides an apparatus comprising a memory and a processor, wherein:
a memory for storing a computer program;
a processor for executing a computer program to implement the fuel-related safety event identification method as described in any one of the embodiments above.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, a cloud server, or any other form of storage medium known in the art.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (4)
1. A method of fuel-related security event identification, comprising:
collecting real-time operation parameters of an SIS system;
comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-events, and obtaining fuel-related small micro-event information according to the comparison result;
storing the fuel related small micro-event information;
comparing the collected real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-event, and obtaining fuel related small micro-event information according to the comparison result, wherein the method specifically comprises the following steps:
when a coal feeder operation signal in real-time operation parameters of the SIS system is received, judging whether the flow of the coal feeder is smaller than a preset coal feeder flow value or whether the current of the coal feeder is smaller than a preset coal feeder current value;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
and/or judging whether the deviation value between the wall temperature of the combustor and the wall temperature of the preset combustor in the current working condition in the received real-time operation parameters of the SIS system is larger than the preset wall temperature deviation value;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
and/or judging a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than a preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than a preset drum water level fluctuation value;
and/or judging whether the wall temperature of the heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, judging that the SIS system is a wall temperature long-term overtemperature event;
and/or judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is less than a second preset temperature and lasts for a second preset time, if so, judging that the reheat steam temperature is a long-term low-temperature event;
and/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is smaller than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event;
and/or judging whether the average total fuel amount of the coal feeding amount of the real-time operation parameters of the SIS system received in the second preset time period is larger than the preset maximum fuel output, if so, judging that the fuel heat value is low.
2. The fuel-related security event identification method of claim 1, wherein the fuel-related small micro-event information includes an event name, a type, an occurrence time, and an end time of a small micro-event.
3. A fuel-related security event identification system, the system comprising:
the real-time operation parameter acquisition module is used for acquiring real-time operation parameters of the SIS system;
the fuel-related small micro-event information processing module is used for comparing the acquired real-time operation parameters of the SIS system with the preset characteristic parameter range of the small micro-event and obtaining fuel-related small micro-event information according to the comparison result;
the fuel related small micro-event information storage module is used for storing the fuel related small micro-event information;
the fuel related small micro-event information processing module specifically comprises:
the coal feeder coal breakage event identification unit is used for judging whether the coal feeder flow is smaller than a preset coal feeder flow value or whether the coal feeder current is smaller than a preset coal feeder current value when receiving a coal feeder operation signal in real-time operation parameters of the SIS system;
if yes, judging whether the coal level of the raw coal bin is larger than a preset coal level value;
if yes, judging that the coal feeder breaks the coal;
and/or a burner flashback event identification unit, which is used for judging whether the deviation value between the wall temperature values of the burner in the received real-time operation parameters of the SIS system and the preset burner under the current working condition is larger than the preset wall temperature deviation value;
if yes, judging whether the acquired instantaneous fluctuation value of the pressure of the primary air pipe is larger than a preset fluctuation value twice continuously within a preset time interval;
if yes, judging that the combustor backfire event occurs;
and/or judging a hearth combustion fluctuation event when the hearth pressure fluctuation value of any measuring point in the real-time operation parameters of the SIS received in the first preset time period is larger than a preset pressure fluctuation value and the drum water level fluctuation value of any measuring point is larger than a preset drum water level fluctuation value;
and/or a wall temperature long-term overtemperature event identification unit, which is used for judging whether the wall temperature of a heat exchange surface in the received real-time operation parameters of the SIS system is greater than a first preset temperature and lasts for a first preset time, if so, the wall temperature long-term overtemperature event is judged;
and/or a steam temperature long-term low-temperature event identification unit, which is used for judging whether the reheat steam temperature in the received real-time operation parameters of the SIS system is less than a second preset temperature and lasts for a second preset time, if yes, judging that the reheat steam temperature is a long-term low-temperature event;
and/or judging whether the main steam temperature in the received real-time operation parameters of the SIS system is smaller than a third preset temperature and lasts for the third preset time, if so, judging that the main steam temperature is a long-term low-temperature event;
and/or a fuel heat value event identification unit, which is used for judging whether the average total fuel amount of the coal feeding amount of the real-time operation parameter of the SIS system received in the second preset time period is larger than the preset maximum fuel output, if so, judging that the fuel heat value is low.
4. A fuel-related security event recognition device comprising a memory and a processor, wherein:
the memory is used for storing a computer program;
the processor for executing the computer program to implement the fuel-related safety event recognition method according to claim 1 or 2.
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