CN116845887A - Fault processing method and device for single-side auxiliary machine configuration unit - Google Patents
Fault processing method and device for single-side auxiliary machine configuration unit Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
- H02J3/0012—Contingency detection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/18—The network being internal to a power source or plant
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Abstract
The invention provides a fault processing method and device for a single-side auxiliary machine configuration unit, wherein the method comprises the following steps: acquiring a plurality of auxiliary machine monitoring parameters, dividing alarm types of the auxiliary machine monitoring parameters according to a preset fault alarm rule, and determining alarm types corresponding to the auxiliary machine monitoring parameters; performing logic operation processing on the alarm type corresponding to the auxiliary machine monitoring parameter to obtain alarm output information; and acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction. According to the invention, through alarming classification and automatic treatment of single-side auxiliary machine abnormality, the running state of the unit is controlled, the single-side auxiliary machine abnormality can be controlled as early as possible, the risk of tripping and unit disconnection caused by abnormality fault expansion is reduced, the auxiliary machine fault treatment can be controlled automatically, the intervention of an operator is not needed, the pressure of a manual monitoring disc is reduced, and auxiliary judgment is provided.
Description
Technical Field
The invention relates to the technical field of single-side auxiliary machine exception handling, in particular to a fault handling method and device for a single-side auxiliary machine configuration unit.
Background
In view of the improvement of reliability of large auxiliary machines, main auxiliary machines (induced draft fan, primary air blower, air preheater and the like) of a unit with a capacity of 600MW and below can be configured by adopting a single-side auxiliary machine. Compared with a double-row configuration system, the system for configuring the single-side auxiliary machine has the advantages of convenience in equipment arrangement, few control parts, simplicity in running operation and the like, but the single-side auxiliary machine configuration system cannot be used for standby or reduces the load of a unit by means of RB (run back) logic, so that the reliability of the whole unit is reduced.
At present, in the boiler main protection logic of the single-side auxiliary machine configuration, a draught fan is stopped, a blower is stopped, a primary blower is stopped, or an air preheater is stopped to trigger a boiler Main Fuel Trip (MFT), so that a steam turbine is tripped and a unit is separated in a linkage manner, namely, the unit is not stopped when any auxiliary machine in the single-side auxiliary machine configuration trips. In order to ensure safe, reliable and stable operation of the unit, early warning and control on the abnormality of the single auxiliary machine are needed, and the unplanned shutdown times possibly caused by the faults of the auxiliary machine are effectively reduced.
Disclosure of Invention
Aiming at the problems existing in the prior art, the main purpose of the embodiment of the invention is to provide a fault processing method and device for a single-side auxiliary machine configuration unit, which reduce the risks of tripping equipment and unit disconnection caused by abnormal fault expansion.
In order to achieve the above object, an embodiment of the present invention provides a fault handling method for a single-side auxiliary machine configuration unit, where the method includes:
acquiring a plurality of auxiliary machine monitoring parameters, dividing alarm types of the auxiliary machine monitoring parameters according to a preset fault alarm rule, and determining alarm types corresponding to the auxiliary machine monitoring parameters;
performing logic operation processing on the alarm types corresponding to the auxiliary machine monitoring parameters to obtain alarm output information;
and acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, the alarm types corresponding to the auxiliary machine monitoring parameters include a type of alarm and a type of alarm.
Optionally, in an embodiment of the present invention, adjusting the unit load according to the alarm output information, the current load instruction, and the automatic power generation control instruction includes:
if the alarm type is one type of alarm, acquiring an alarm confirmation instruction, and carrying out logic operation processing on alarm output information, the alarm confirmation instruction and an automatic power generation control instruction to obtain a first logic operation result;
and adjusting the load of the unit according to the first logic operation result, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, adjusting the unit load according to the first logic operation result, the current load instruction, and the automatic power generation control instruction includes:
if the first logic operation result is 1, keeping the current load instruction unchanged;
if the first logic operation result is 0, replacing the current load instruction with an automatic power generation control instruction so as to finish the adjustment of the unit load.
Optionally, in an embodiment of the present invention, adjusting the unit load according to the alarm output information, the current load instruction, and the automatic power generation control instruction further includes:
if the alarm type is a second type alarm, carrying out logic operation processing on the alarm output information to obtain a second logic operation result;
and adjusting the load of the unit according to the second logic operation result, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, adjusting the unit load according to the second logic operation result, the current load instruction, and the automatic power generation control instruction includes:
if the second logic operation result is 1, the automatic power generation control instruction is adjusted by utilizing a preset load adjustment threshold value, the current load instruction is replaced by the adjusted automatic power generation control instruction, and the automatic power generation control instruction is stopped to be adjusted until the second type of alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold value, so that the adjustment of the load of the unit is completed;
And if the second logical operation result is 0, replacing the current load instruction with an automatic power generation control instruction so as to finish the adjustment of the unit load.
The embodiment of the invention also provides a fault processing device of the single-side auxiliary machine configuration unit, which comprises:
the alarm type module is used for acquiring a plurality of auxiliary machine monitoring parameters, dividing alarm types of the auxiliary machine monitoring parameters according to a preset fault alarm rule, and determining alarm types corresponding to the auxiliary machine monitoring parameters;
the output information module is used for carrying out logic operation processing on the alarm type corresponding to the auxiliary machine monitoring parameter to obtain alarm output information;
the load adjusting module is used for acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, the alarm types corresponding to the auxiliary machine monitoring parameters include a type of alarm and a type of alarm.
Optionally, in an embodiment of the present invention, the load adjustment module includes:
the first logic operation unit is used for acquiring an alarm confirmation instruction if the alarm type is one type of alarm, and carrying out logic operation processing on the alarm output information, the alarm confirmation instruction and the automatic power generation control instruction to obtain a first logic operation result;
And the first load adjusting unit is used for adjusting the load of the unit according to the first logic operation result, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, the first load adjustment unit includes:
an instruction holding subunit, configured to keep the current load instruction unchanged if the first logic operation result is 1;
and the first instruction replacing subunit is used for replacing the current load instruction with an automatic power generation control instruction if the first logic operation result is 0 so as to complete the adjustment of the unit load.
Optionally, in an embodiment of the present invention, the load adjustment module further includes:
the second logic operation unit is used for carrying out logic operation processing on the alarm output information if the alarm type is a type II alarm to obtain a second logic operation result;
and the second load adjusting unit is used for adjusting the load of the unit according to the second logic operation result, the current load instruction and the automatic power generation control instruction.
Optionally, in an embodiment of the present invention, the second load adjustment unit includes:
the instruction adjusting subunit is used for adjusting the automatic power generation control instruction by utilizing a preset load adjusting threshold value if the second logic operation result is 1, replacing the current load instruction with the adjusted automatic power generation control instruction, and stopping adjusting the automatic power generation control instruction until the second type of alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold value so as to finish the adjustment of the load of the unit;
And the second instruction replacing subunit is used for replacing the current load instruction with an automatic power generation control instruction if the second logic operation result is 0 so as to complete the adjustment of the unit load.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method by a computer.
The invention also provides a computer program product comprising computer programs/instructions which when executed by a processor implement the steps of the above method.
According to the invention, through alarming classification and automatic treatment of single-side auxiliary machine abnormality, the running state of the unit is controlled, the single-side auxiliary machine abnormality can be controlled as early as possible, the risk of tripping and unit disconnection caused by abnormality fault expansion is reduced, the auxiliary machine fault treatment can be controlled automatically, the intervention of an operator is not needed, the pressure of a manual monitoring disc is reduced, and auxiliary judgment is provided.
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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 will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present 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 flow chart of a fault handling method for a single-side auxiliary machine configuration unit according to an embodiment of the invention;
FIG. 2 is a flow chart of unit load adjustment corresponding to one type of alarm in an embodiment of the invention;
FIG. 3 is a flow chart of unit load adjustment corresponding to one type of alarm in another embodiment of the invention;
FIG. 4 is a flow chart of unit load adjustment corresponding to the second type of alarm in an embodiment of the invention;
FIG. 5 is a flow chart of unit load adjustment corresponding to the second type of alarm in another embodiment of the present invention;
FIG. 6 is a schematic diagram of one-sided auxiliary machine type alarm classification and control in an embodiment of the invention;
FIG. 7 is a schematic diagram of class II alarm classification and control of a single-sided auxiliary machine in an embodiment of the invention;
FIG. 8 is a schematic structural diagram of a fault handling apparatus for a single-side auxiliary machine configuration unit according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a load adjustment module according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a first load adjusting unit according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a load adjustment module according to another embodiment of the invention;
fig. 12 is a schematic structural diagram of a second load adjustment unit according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a fault processing method and device for a single-side auxiliary machine configuration unit.
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.
At present, the control characteristics of a blower, a draught fan, a primary fan, an air preheater, a steam feed pump and a booster fan are configured in a single row based on a certain ultra-supercritical 2X 660MW unit are disclosed in the prior art, the hardware system, the real-time online intelligent diagnosis function, the main protection function and the auxiliary machine interlocking protection function of a control system are designed, and the redundant configuration of auxiliary machine thermal control measuring points is increased. The conventional 2-level alarm is improved to 3-level alarm, and the tripping state of auxiliary equipment of a main auxiliary machine (the tripping of a main oil pump of a lubricating oil of a water feeding pump turbine and the tripping of an accident oil pump) is brought into SOE; the air feeder, the induced draft fan, the primary air fan, the air preheater, the pneumatic water supply pump, the booster fan and auxiliary equipment are all designed with light character alarm.
The prior art only adds the measuring point redundant configuration and the 3-level alarm aiming at the configuration of the unilateral auxiliary machine, only gives an optical character alarm when the equipment is abnormal, and no program is used for automatic treatment; if the unit further lifts the load, the further expansion of the auxiliary machine faults cannot be effectively avoided, and the tripping and disconnection risk of the unit still exists.
Fig. 1 is a flowchart of a fault handling method of a single-side auxiliary machine configuration unit according to an embodiment of the present invention, where an execution body of the fault handling method of the single-side auxiliary machine configuration unit provided by the embodiment of the present invention includes, but is not limited to, a computer. According to the invention, through alarming classification and automatic treatment of single-side auxiliary machine abnormality, the running state of the unit is controlled, the single-side auxiliary machine abnormality can be controlled as early as possible, the risk of tripping and unit disconnection caused by abnormality fault expansion is reduced, the auxiliary machine fault treatment can be controlled automatically, the intervention of an operator is not needed, the pressure of a manual monitoring disc is reduced, and auxiliary judgment is provided. The method shown in the figure comprises the following steps:
step S1, acquiring a plurality of auxiliary machine monitoring parameters, and dividing alarm types of the auxiliary machine monitoring parameters according to preset fault alarm rules to determine alarm types corresponding to the auxiliary machine monitoring parameters;
Step S2, carrying out logic operation processing on the alarm types corresponding to the auxiliary machine monitoring parameters to obtain alarm output information;
and step S3, acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
The auxiliary machine monitoring parameters comprise monitoring parameters of a blower, a draught fan, a primary fan and an air preheater. And judging the current alarm type according to the preset fault alarm rule and the acquired auxiliary machine monitoring parameters. Specifically, the auxiliary machine monitoring parameters can be obtained through a conventional acquisition means, and are not described herein.
Further, logic operation processing is carried out on the alarm type corresponding to the auxiliary machine monitoring parameter, specifically OR operation processing is carried out, and alarm output information is obtained. Thus, when a fault of any one alarm type occurs, it is ensured that the alarm output information can correspond to the alarm type.
Further, the alarm types comprise a type of alarm and a type of alarm. Specifically, the alarm comprises four typical working conditions of bearing temperature high alarm, lubricating oil low alarm, lubricating oil flow low alarm and control oil pressure low alarm, air preheater bearing temperature high alarm, smoke exhaust temperature high alarm, sector plate sealing gap small alarm and air preheater resistance overrun alarm. And triggering an alarm of corresponding equipment when any working condition occurs, namely performing OR operation, and obtaining alarm output information.
In addition, the two types of alarms comprise a fan vibration high alarm, a fan stall alarm, a bearing temperature high and lubricating oil low alarm, a bearing temperature high and lubricating oil flow low alarm, an air preheater current too high alarm (jamming), a fire monitoring alarm, a rotor rotating speed low alarm (stopping) and other typical working conditions. And triggering the second class alarm of the corresponding equipment when any working condition occurs, namely performing OR operation, and obtaining alarm output information.
Furthermore, the alarm does not influence the operation of the equipment with the current load, but can not continue to lift the load, the current load is required to be locked, and the equipment is reset after the operator confirms that the equipment is normal, so that the condition that the parameters of auxiliary machinery are further deteriorated in the load change process is avoided. The second type of alarm shows that the equipment cannot safely operate with the current load, the load needs to be immediately reduced, manual confirmation is not needed, the rated load is automatically reduced on the basis of the current load, and the situation that the auxiliary machine fault is deteriorated, and tripping occurs to cause disconnection of the machine set is avoided.
The current load instruction refers to the load of the current unit operation, the automatic power generation control instruction is an AGC instruction, and the current load instruction can be obtained through a conventional obtaining manner, for example, manual input, which is not described herein.
Specifically, when the alarm type is one type of alarm, an alarm confirmation instruction is acquired, and after the alarm output information and the alarm confirmation instruction are taken as NOT and the AGC instruction is greater than the current load instruction are AND-logic, a first logic operation result is obtained.
Further, when the first logical operation result is 1, the load is maintained as the current load command, and when the first logical operation result is 0, the load is changed according to the AGC command, i.e. the current load command is replaced by the automatic generation control command.
Specifically, when an alarm such as a single-side auxiliary machine is triggered, no operator alarm confirmation is needed, when the AGC command is greater than the current load command, namely in a load lifting stage, the logical judgment AND operation output is 1, so that the load is maintained to be the current load command, namely the load lifting request is not responded any more; when the AGC command is smaller than or equal to the current load command, namely in a load-reducing or load-unchanged stage, or the operator confirms that the alarm check is abnormal-free, namely after the alarm confirmation, the AGC command change load is automatically tracked.
When the alarm type is the second alarm, delay, 5min falling edge (5 min long signal with output of 0) and NOT logic AND operation are carried out on alarm output information corresponding to the second alarm, so as to obtain a second logic operation result.
Specifically, after the alarm output signal is delayed, specifically 2S short delay, triggering 5min signal inversion, and continuously outputting to be 0. The purpose is that if the two types of alarms are triggered once, the two types of alarms can not respond within 5min, and the two types of alarms can respond again after 5 min. The variable load rate of the general coal motor unit is 1.5% -2% of rated load/min, so that 5min is enough to execute the instruction for reducing 10% of rated load (load adjustment threshold), even if the load is continuously reduced for many times, the load instruction and feedback deviation are not caused, the load coordination control mode is not cut off, and the quick load lifting of the unit is not influenced.
Further, when the second logic operation result is 1, the load instruction becomes the AGC instruction minus 10% rated load, that is, the automatic power generation control instruction is adjusted by using the preset load adjustment threshold, until the second alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold, the automatic power generation control instruction is stopped being adjusted. And when the second logic operation result is 0, the current load instruction changes according to the AGC instruction, namely, the current load instruction is replaced by an automatic power generation control instruction.
Specifically, when the second class alarm of the unilateral auxiliary machine is triggered, the output of the second logic operation result is 1 after short delay, and the current load instruction is the AGC load instruction minus 10% rated load; if the class II alarms are not disappeared after 5 minutes, the class II alarms are triggered again, the rated load of the class II alarms is reduced by 10 percent continuously, and when the AGC command reaches the lower limit of the rated load of 50 percent, the class II alarms are not reduced any more. In the process, the load instruction is overlapped on the AGC instruction (before the speed change), so that the AGC instruction (after the speed change) and the current load instruction do not deviate too much and the normal operation of the coordination control system is not influenced; when the alarm of the second class disappears, the coordination control automatically tracks the AGC command change load.
As one embodiment of the invention, the alarm types corresponding to the auxiliary machine monitoring parameters comprise a type of alarm and a type of alarm.
In this embodiment, as shown in fig. 2, according to the alarm output information, the current load instruction, and the automatic power generation control instruction, the adjusting the unit load includes:
step S31, if the alarm type is one type of alarm, acquiring an alarm confirmation instruction, and carrying out logic operation processing on alarm output information, the alarm confirmation instruction and an automatic power generation control instruction to obtain a first logic operation result;
and step S32, adjusting the load of the unit according to the first logic operation result, the current load instruction and the automatic power generation control instruction.
In this embodiment, as shown in fig. 3, according to the first logic operation result, the current load instruction, and the automatic power generation control instruction, the adjusting the unit load includes:
step S321, if the first logic operation result is 1, keeping the current load instruction unchanged;
in step S322, if the first logic operation result is 0, the current load instruction is replaced by an automatic power generation control instruction, so as to complete the adjustment of the unit load.
When the alarm type is one type of alarm, an alarm confirmation instruction is acquired, and after the alarm output information and the alarm confirmation instruction are not taken and the AGC instruction is greater than the current load instruction are AND-logic, a first logic operation result is obtained.
Further, when the first logical operation result is 1, the load is maintained as the current load command, and when the first logical operation result is 0, the load is changed according to the AGC command, i.e. the current load command is replaced by the automatic generation control command.
Specifically, when an alarm such as a single-side auxiliary machine is triggered, no operator alarm confirmation is needed, when the AGC command is greater than the current load command, namely in a load lifting stage, the logical judgment AND operation output is 1, so that the load is maintained to be the current load command, namely the load lifting request is not responded any more; when the AGC command is smaller than or equal to the current load command, namely in a load-reducing or load-unchanged stage, or the operator confirms that the alarm check is abnormal-free, namely after the alarm confirmation, the AGC command change load is automatically tracked.
In this embodiment, as shown in fig. 4, according to the alarm output information, the current load instruction, and the automatic power generation control instruction, the adjusting the unit load further includes:
step S33, if the alarm type is a type II alarm, logic operation processing is carried out on the alarm output information to obtain a second logic operation result;
and step S34, adjusting the load of the unit according to the second logic operation result, the current load instruction and the automatic power generation control instruction.
In this embodiment, as shown in fig. 5, according to the second logic operation result, the current load instruction, and the automatic power generation control instruction, the adjusting the unit load includes:
step S341, if the second logic operation result is 1, utilizing a preset load adjustment threshold value to adjust the automatic power generation control instruction, and replacing the current load instruction with the adjusted automatic power generation control instruction until the second type alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold value, stopping adjusting the automatic power generation control instruction so as to complete the adjustment of the load of the unit;
in step S342, if the second logic operation result is 0, the current load instruction is replaced by an automatic power generation control instruction, so as to complete the adjustment of the unit load.
When the alarm type is the second alarm, delay, 5min falling edge (5 min long signal with output of 0) and NOT logic AND operation are carried out on alarm output information corresponding to the second alarm, so as to obtain a second logic operation result.
Specifically, after the alarm output signal is delayed, specifically 2S short delay, triggering 5min signal inversion, and continuously outputting to be 0. The purpose is that if the two types of alarms are triggered once, the two types of alarms can not respond within 5min, and the two types of alarms can respond again after 5 min. The variable load rate of the general coal motor unit is 1.5% -2% of rated load/min, so that 5min is enough to execute the instruction for reducing 10% of rated load (load adjustment threshold), even if the load is continuously reduced for many times, the load instruction and feedback deviation are not caused, the load coordination control mode is not cut off, and the quick load lifting of the unit is not influenced.
Further, when the second logic operation result is 1, the load instruction becomes the AGC instruction minus 10% rated load, that is, the automatic power generation control instruction is adjusted by using the preset load adjustment threshold, until the second alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold, the automatic power generation control instruction is stopped being adjusted. And when the second logic operation result is 0, the current load instruction changes according to the AGC instruction, namely, the current load instruction is replaced by an automatic power generation control instruction.
Specifically, when the second class alarm of the unilateral auxiliary machine is triggered, the output of the second logic operation result is 1 after short delay, and the current load instruction is the AGC load instruction minus 10% rated load; if the class II alarms are not disappeared after 5 minutes, the class II alarms are triggered again, the rated load of the class II alarms is reduced by 10 percent continuously, and when the AGC command reaches the lower limit of the rated load of 50 percent, the class II alarms are not reduced any more. In the process, the load instruction is overlapped on the AGC instruction (before the speed change), so that the AGC instruction (after the speed change) and the current load instruction do not deviate too much and the normal operation of the coordination control system is not influenced; when the alarm of the second class disappears, the coordination control automatically tracks the AGC command change load.
In an embodiment of the present invention, as shown in fig. 6 and fig. 7, a system workflow diagram of a fault handling method of a single-side auxiliary machine configuration unit of the present invention is shown. Specifically, the system comprises a single-side auxiliary machine alarm module, a logic judgment module and a coordination control module.
In the embodiment, the monitoring parameters of the boiler single-row arranged major auxiliary machines (a blower, a draught fan, a primary blower and an air preheater) are regulated, one-class and two-class light-word alarms are classified, and alarm signals are introduced into a coordination control system. The first type of alarm does not affect the operation of the equipment with the current load, but cannot continue to lift the load, the current load needs to be locked, and the equipment is reset after the operator confirms that the equipment is normal, so that the condition that the parameters of the auxiliary machinery are further deteriorated in the load change process is avoided, as shown in fig. 6. The second type of alarm shows that the equipment cannot safely operate with the current load, the load needs to be immediately reduced, the manual confirmation is not needed, the 10% of rated load is automatically reduced on the basis of the current load (the target load needs to be more than 50% of rated load), and the situation that the auxiliary machine fault is deteriorated, and the tripping occurs to cause the disconnection of the machine set is avoided, as shown in fig. 7.
The single-side auxiliary machine alarm module is divided into four typical working conditions of bearing temperature high alarm, lubricating oil low alarm, lubricating oil flow low alarm and control oil pressure low alarm, air preheater bearing temperature high alarm, smoke discharging temperature high alarm, sector plate sealing gap small alarm and air preheater resistance over-limit alarm according to equipment characteristics of a draught fan, a primary fan and an air preheater configured by the single-side auxiliary machine, wherein any working condition is used for triggering corresponding equipment alarm.
Further, according to the relevant regulations, the judgment of the typical working condition should be at least configured in a redundant mode of 3-out-of-2. The output of one type of alarm module of induced draft fan, forced draught blower, primary fan and air preheater enters the logic judgment module, after AND logic is carried out on the alarm confirmation and AGC instruction is greater than the load instruction, the logic enters the coordination control module.
Further, in the coordination control module, "switch" is a switching block, when the input is 1, the "YES" port is executed, the load is maintained as the current load command, and when the input is 0, the "NO" port is executed, and the load fluctuates according to the AGC command.
Specifically, when an alarm such as a single-side auxiliary machine is triggered, an operator does not need to perform alarm confirmation, when an AGC instruction is larger than a load instruction, namely, the AGC instruction is in a load lifting stage, the output of an AND module of a logic judging module is 1, a SWITH executes a YES port, and the load is maintained as a current load instruction, namely, a load lifting request is not responded any more; when the AGC command is smaller than or equal to the current load, namely in a load-reducing or load-unchanged stage, or after the operator confirms that no abnormal reset is carried out on alarm check, the coordination control automatically tracks the AGC command to change the load.
In this embodiment, as shown in fig. 7, the two-class alarm classification and control process of the single-side auxiliary machine of the system is shown, wherein the single-side auxiliary machine alarm module is divided into several typical working conditions of high fan vibration alarm, high fan stall alarm, high bearing temperature, low lubricating oil flow alarm, over-high air preheater current alarm (jamming), fire monitoring alarm, low rotor rotation speed alarm (stopping) and the like according to the equipment characteristics of the induced draft fan, the forced draught blower, the primary fan and the air preheater configured by the single-side auxiliary machine, wherein any working condition triggers the two-class alarm of corresponding equipment when any working condition occurs, and the output of the single-side auxiliary machine alarm module is 1.
The logic judgment module consists of a TD delay block, a 5min falling edge (5 min long signal with output of 0) and NOT logic AND operation. After the output of the OR logic block is 2S short delay through the TD delay block, triggering 5min signal inversion and continuously outputting 0, wherein the purpose is that if the two types of alarms are triggered once, the two types of alarms are not responded within 5min, and the two types of alarms can be responded again after 5 min. The load change rate of the general coal motor group is 1.5% -2% of rated load/min, so that 5min is enough to execute the instruction for reducing 10% of rated load, even if the load is continuously reduced for many times, the load instruction and feedback deviation are not caused, the coordinated control mode is greatly cut off, and the quick load lifting of the group is not influenced.
Further, in the coordination control module, "switch" is a switching block, when the input is 1, the "YES" port is executed, the load command is a load command-10% of the rated load, and when the input is 0, the "NO" port is executed, and the load varies according to the AGC command.
Specifically, when the class II alarm of the unilateral auxiliary machine is triggered, the AND module of the logic judgment module is output as 1 through short delay, the SWITH executes a YES port, and the load instruction is AGC load instruction-10% rated load; if the second type of alarm is not disappeared after 5 minutes, the second type of alarm is triggered again, the rated load is reduced by 10% continuously, and the load command is not reduced any more when reaching the lower limit of 50% of the rated load. In the process, the load instruction is overlapped on the AGC load instruction (before the speed change), so that the AGC instruction (after the speed change) and the current load instruction do not deviate too much and the normal operation of the coordination control system is not influenced; when the alarm of the second class disappears, the coordination control automatically tracks the AGC command change load.
Therefore, the invention can control the abnormal faults of the single-side auxiliary machine as soon as possible, prevent the risks of equipment tripping and unit disconnection caused by expansion, avoid the intervention of operators, automatically control the fault treatment of the auxiliary machine by a program, lighten the pressure of a manual monitoring disc and provide auxiliary judgment.
According to the invention, different processing modes are adopted according to different early warning classifications, the current load is automatically locked for one type of early warning, and the equipment is reset after the operator confirms that the equipment is normal, so that the condition that the auxiliary machine parameters are further deteriorated in the load change process is avoided; and the second type of alarm immediately reduces the load, so that the situation that the auxiliary machine fault is deteriorated, and the tripping occurs to cause the disconnection of the machine set is avoided. The processing mode does not need manual confirmation, and fully considers the variable load rate, AGC and coordination control requirements of the unit, and fully responds to the load scheduling requirements of the power grid on the basis of ensuring the safe operation of the unit.
Fig. 8 is a schematic structural diagram of a fault handling apparatus for a single-side auxiliary machine configuration unit according to an embodiment of the present invention, where the apparatus includes:
the alarm type module 10 is used for acquiring a plurality of auxiliary machine monitoring parameters, dividing the auxiliary machine monitoring parameters into alarm types according to a preset fault alarm rule, and determining the alarm types corresponding to the auxiliary machine monitoring parameters;
the output information module 20 is used for carrying out logic operation processing on the alarm type corresponding to the auxiliary machine monitoring parameter to obtain alarm output information;
the load adjustment module 30 is configured to obtain a current load instruction and an automatic power generation control instruction, and adjust a load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
As one embodiment of the invention, the alarm types corresponding to the auxiliary machine monitoring parameters comprise a type of alarm and a type of alarm.
In the present embodiment, as shown in fig. 9, the load adjustment module 30 includes:
the first logic operation unit 31 is configured to obtain an alarm confirmation instruction if the alarm type is one type of alarm, and perform logic operation processing on the alarm output information, the alarm confirmation instruction, and the automatic power generation control instruction to obtain a first logic operation result;
the first load adjustment unit 32 is configured to adjust the unit load according to the first logic operation result, the current load instruction, and the automatic power generation control instruction.
In the present embodiment, as shown in fig. 10, the first load adjustment unit 32 includes:
an instruction holding subunit 321, configured to, if the first logic operation result is 1, keep the current load instruction unchanged;
and the first instruction replacing subunit 322 is configured to replace the current load instruction with an automatic power generation control instruction if the first logic operation result is 0, so as to complete the adjustment of the unit load.
In the present embodiment, as shown in fig. 11, the load adjustment module 30 further includes:
the second logic operation unit 33 is configured to perform logic operation processing on the alarm output information if the alarm type is a type II alarm, so as to obtain a second logic operation result;
And the second load adjustment unit 34 is configured to adjust the unit load according to the second logic operation result, the current load instruction, and the automatic power generation control instruction.
In the present embodiment, as shown in fig. 12, the second load adjustment unit 34 includes:
the instruction adjusting subunit 341 is configured to adjust the automatic power generation control instruction by using a preset load adjustment threshold if the second logic operation result is 1, and replace the current load instruction with the adjusted automatic power generation control instruction until the second type alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold, and stop adjusting the automatic power generation control instruction, so as to complete the adjustment of the unit load;
and the second instruction replacing subunit 342 is configured to replace the current load instruction with an automatic power generation control instruction if the second logic operation result is 0, so as to complete the adjustment of the unit load.
Based on the same application conception as the fault processing method of the single-side auxiliary machine configuration unit, the invention also provides a fault processing device of the single-side auxiliary machine configuration unit. The principle of the fault handling device for the single-side auxiliary machine configuration unit for solving the problem is similar to that of the fault handling method for the single-side auxiliary machine configuration unit, so that the implementation of the fault handling device for the single-side auxiliary machine configuration unit can be referred to the implementation of the fault handling method for the single-side auxiliary machine configuration unit, and repeated parts are omitted.
According to the invention, through alarming classification and automatic treatment of single-side auxiliary machine abnormality, the running state of the unit is controlled, the single-side auxiliary machine abnormality can be controlled as early as possible, the risk of tripping and unit disconnection caused by abnormality fault expansion is reduced, the auxiliary machine fault treatment can be controlled automatically, the intervention of an operator is not needed, the pressure of a manual monitoring disc is reduced, and auxiliary judgment is provided.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method when executing the program.
The invention also provides a computer program product comprising computer programs/instructions which when executed by a processor implement the steps of the above method.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method by a computer.
As shown in fig. 13, the electronic device 600 may further include: a communication module 110, an input unit 120, an audio processor 130, a display 160, a power supply 170. It is noted that the electronic device 600 need not include all of the components shown in fig. 13; in addition, the electronic device 600 may further include components not shown in fig. 13, to which reference is made to the related art.
As shown in fig. 13, the central processor 100, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, which central processor 100 receives inputs and controls the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information about failure may be stored, and a program for executing the information may be stored. And the central processor 100 can execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides an input to the central processor 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used for displaying display objects such as images and characters. The display may be, for example, but not limited to, an LCD display.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), random Access Memory (RAM), SIM card, or the like. But also a memory which holds information even when powered down, can be selectively erased and provided with further data, an example of which is sometimes referred to as EPROM or the like. Memory 140 may also be some other type of device. Memory 140 includes a buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage 142, the application/function storage 142 for storing application programs and function programs or a flow for executing operations of the electronic device 600 by the central processor 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging applications, address book applications, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. A communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, etc., may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and to receive audio input from the microphone 132 to implement usual telecommunication functions. The audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 130 is also coupled to the central processor 100 so that sound can be recorded locally through the microphone 132 and so that sound stored locally can be played through the speaker 131.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (15)
1. The fault processing method of the single-side auxiliary machine configuration unit is characterized by comprising the following steps of:
acquiring a plurality of auxiliary machine monitoring parameters, dividing alarm types of the auxiliary machine monitoring parameters according to a preset fault alarm rule, and determining alarm types corresponding to the auxiliary machine monitoring parameters;
performing logic operation processing on the alarm type corresponding to the auxiliary machine monitoring parameter to obtain alarm output information;
and acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
2. The method of claim 1, wherein the alarm types corresponding to the auxiliary machine monitoring parameters comprise a type one alarm and a type two alarm.
3. The method of claim 2, wherein adjusting the unit load based on the alert output information, the current load command, and the automatic power generation control command comprises:
if the alarm type is an alarm type, acquiring an alarm confirmation instruction, and carrying out logic operation processing on the alarm output information, the alarm confirmation instruction and the automatic power generation control instruction to obtain a first logic operation result;
And adjusting the load of the unit according to the first logic operation result, the current load instruction and the automatic power generation control instruction.
4. The method of claim 3, wherein adjusting the unit load based on the first logical operation result, the current load command, and the automatic power generation control command comprises:
if the first logical operation result is 1, keeping the current load instruction unchanged;
and if the first logical operation result is 0, replacing the current load instruction with the automatic power generation control instruction so as to finish the adjustment of the unit load.
5. The method of claim 2, wherein adjusting the unit load based on the alert output information, the current load command, and the automatic power generation control command further comprises:
if the alarm type is a type II alarm, carrying out logic operation processing on the alarm output information to obtain a second logic operation result;
and adjusting the load of the unit according to the second logic operation result, the current load instruction and the automatic power generation control instruction.
6. The method of claim 5, wherein adjusting the unit load based on the second logical operation result, the current load command, and the automatic power generation control command comprises:
If the second logic operation result is 1, adjusting the automatic power generation control instruction by using a preset load adjustment threshold value, and replacing the current load instruction with the adjusted automatic power generation control instruction until the two kinds of alarms disappear or the automatic power generation control instruction reaches the preset instruction threshold value, stopping adjusting the automatic power generation control instruction so as to finish the adjustment of the unit load;
and if the second logic operation result is 0, replacing the current load instruction with the automatic power generation control instruction so as to finish the adjustment of the unit load.
7. A fault handling device for a single-sided auxiliary machine configuration unit, the device comprising:
the alarm type module is used for acquiring a plurality of auxiliary machine monitoring parameters, dividing the auxiliary machine monitoring parameters into alarm types according to a preset fault alarm rule, and determining alarm types corresponding to the auxiliary machine monitoring parameters;
the output information module is used for carrying out logic operation processing on the alarm type corresponding to the auxiliary machine monitoring parameter to obtain alarm output information;
the load adjusting module is used for acquiring a current load instruction and an automatic power generation control instruction, and adjusting the load of the unit according to the alarm output information, the current load instruction and the automatic power generation control instruction.
8. The apparatus of claim 7, wherein the alarm types for the auxiliary machine monitoring parameters include a class one alarm and a class two alarm.
9. The apparatus of claim 8, wherein the load adjustment module comprises:
the first logic operation unit is used for acquiring an alarm confirmation instruction if the alarm type is one type of alarm, and performing logic operation processing on the alarm output information, the alarm confirmation instruction and the automatic power generation control instruction to obtain a first logic operation result;
and the first load adjusting unit is used for adjusting the unit load according to the first logic operation result, the current load instruction and the automatic power generation control instruction.
10. The apparatus of claim 9, wherein the first load adjustment unit comprises:
an instruction holding subunit, configured to keep the current load instruction unchanged if the first logic operation result is 1;
and the first instruction replacing subunit is used for replacing the current load instruction with the automatic power generation control instruction if the first logic operation result is 0 so as to complete the adjustment of the unit load.
11. The apparatus of claim 8, wherein the load adjustment module further comprises:
the second logic operation unit is used for carrying out logic operation processing on the alarm output information if the alarm type is a second type alarm, so as to obtain a second logic operation result;
and the second load adjusting unit is used for adjusting the unit load according to the second logic operation result, the current load instruction and the automatic power generation control instruction.
12. The apparatus of claim 11, wherein the second load adjustment unit comprises:
the instruction adjusting subunit is configured to adjust the automatic power generation control instruction by using a preset load adjustment threshold if the second logic operation result is 1, and replace the current load instruction with the adjusted automatic power generation control instruction until the second type alarm disappears or the automatic power generation control instruction reaches the preset instruction threshold, so as to stop adjusting the automatic power generation control instruction, thereby completing adjustment of the unit load;
and the second instruction replacing subunit is used for replacing the current load instruction with the automatic power generation control instruction if the second logic operation result is 0 so as to complete the adjustment of the unit load.
13. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 6 when executing the computer program.
14. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program for executing the method of any one of claims 1 to 6 by a computer.
15. A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the method of any of claims 1 to 6.
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