CN220603867U - Misoperation prevention system for running of thermal power generating unit - Google Patents
Misoperation prevention system for running of thermal power generating unit Download PDFInfo
- Publication number
- CN220603867U CN220603867U CN202321084985.1U CN202321084985U CN220603867U CN 220603867 U CN220603867 U CN 220603867U CN 202321084985 U CN202321084985 U CN 202321084985U CN 220603867 U CN220603867 U CN 220603867U
- Authority
- CN
- China
- Prior art keywords
- block
- input end
- module
- output end
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002265 prevention Effects 0.000 title claims description 5
- 238000010977 unit operation Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
The utility model relates to the technical field of logic construction of control systems, in particular to an anti-misoperation system for running a thermal power unit; the operation control module comprises a calculation module, a switching control module, a state indication module and a logic output module; calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value, and generating a judging result; outputting a switched instruction to the on-site equipment valve according to the judging result, the current running state and the on-site equipment valve mode switching instruction; the abnormal condition of the unit caused by the error command transmission of the operator during the unit operation is solved, and the abnormal unit caused by the misoperation of the operator is avoided.
Description
Technical Field
The utility model relates to the technical field of logic construction of control systems, in particular to an anti-misoperation system for running a thermal power generating unit.
Background
At present, when an operator manually inputs an instruction in a thermal power plant, misoperation can occur, system abnormality is caused, unqualified electric quantity is generated, and the condition that a unit is not stopped is seriously caused. Therefore, design logic is urgently needed to solve the problem of manual instruction misplacement of operators.
Disclosure of Invention
Aiming at the problem of unit faults caused by manual error transmission instructions of operators, the utility model provides an anti-misoperation system for the operation of a thermal power unit, which comprises an operation control module, a switching control module, a state indication module and a logic output module, wherein the operation control module comprises a calculation module, a switching control module and a logic output module; calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value, and generating a judging result; outputting a switched instruction to the on-site equipment valve according to the judging result, the current running state and the on-site equipment valve mode switching instruction; the abnormal condition of the unit caused by the error command transmission of the operator during the unit operation is solved, and the abnormal unit caused by the misoperation of the operator is avoided.
The utility model has the following specific implementation contents:
an anti-misoperation system for running a thermal power unit is connected with a local equipment valve; the system comprises a PID control module, a map module and an operation control module which are connected in sequence;
the operation control module comprises a calculation module, a switching control module, a state indication module and a logic output module;
the input end of the calculation module is connected with the output end of the map module, and the output end of the calculation module is connected with the input end of the switching control module;
the input end of the state indication module inputs a logic instruction, and the output end of the state indication module is connected with the input end of the logic output module;
the output end of the logic output module is connected with the local equipment valve;
the calculation module is used for calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value or not, and outputting a corresponding judgment result;
the state indication module is used for judging the current running state of the unit and the valve mode of the local equipment;
the switching control module is used for switching instructions according to the judging result, the current running state and the on-site equipment valve mode;
and the logic output module is used for outputting the switched instruction to the on-site equipment valve.
In order to better realize the utility model, the computing module further comprises a first switching block, an adding block and a high-low block;
the input end of the first switching block is connected with the output end of the map module, and the output end of the first switching block is connected with the input end of the adding block;
the first input end of the addition block is connected with the output end of the map module, and the second input end of the addition block is connected with the input end of the high-low block;
the output end of the high-low block is connected with the input end of the switching control module.
In order to better realize the utility model, the switching control module further comprises a first and block, a second switching block and a second and block;
the first input end of the first and block is connected with the output end of the high and low block, the second input end of the second and block is connected with the second input end of the second and block, and the third input end of the first and block is connected with the output end of the map module; the output end of the first and block is connected with the input end of the second switching block;
the first input end of the second and block is connected with the output end of the map module, and the output end of the second and block is connected with the input end of the logic output module;
the first input end of the second switching block is lapped between the first input end of the adding block and the output end of the map module; and the output end of the second switching block is connected with the input end of the logic output module.
To better implement the present utility model, further, the status indication module includes a first input block, a second input block, a test block, a third and block, or a block;
the first input end of the third and block is connected with the output end of the first input block, the second input end of the third and block is connected with the output end of the second input block, and the output end of the third and block is connected with the first input end of the or block;
the second input end of the OR block is connected with the output end of the test block, and the output end of the OR block is connected with the second input ends of the second and block.
In order to better realize the utility model, the logic output module further comprises a third switching block and a fourth switching block;
the input end of the third switching block is connected with the output end of the map module, the second input end of the addition block, the output end of the second and block and the output end of the second switching block; the output end of the third switching block is connected with the input end of the fourth switching block;
the input end of the fourth switching block is connected with the output end of the OR block and the output end of the second switching block, and the output end of the fourth switching block is connected with a local equipment valve.
To better implement the present utility model, further, the status indication module further includes a non-block;
the input end of the non-block is connected with the output end of the or block, and the output end of the non-block is lapped between the second input end of the first and block and the second input end of the second and block.
The utility model has the following beneficial effects:
according to the utility model, by setting the operation control module, the unit state and the valve mode are synthesized by comparing the operation control module with the set threshold value, when the valve is in the manual mode, the valve instruction can only be input in the set range of the current instruction, and the exceeding is an invalid instruction; when the valve is in the manual mode and the valve is in the test mode, an operator can manually operate the 0-100 instruction to be a valid instruction. When the unit is shut down and the valve is in a manual mode, an operator can manually input 0-100 effective instructions. When the valve is in an automatic mode, no matter whether the unit is stopped or not, the valve instruction is only related to PID regulation output, and unit abnormality generated by misoperation of operators is effectively avoided.
Drawings
Fig. 1 is a schematic diagram of a thermal power generating unit running operation system structure provided by the utility model.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it should be understood that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and therefore should not be considered as limiting the scope of protection. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; or may be directly connected, or may be indirectly connected through an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1:
the embodiment provides an anti-misoperation system for running a thermal power generating unit, which is connected with a local equipment valve; as shown in fig. 1, the system comprises a PID control module, a station module and an operation control module which are connected in sequence;
the operation control module comprises a calculation module, a switching control module, a state indication module and a logic output module;
the input end of the calculation module is connected with the output end of the map module, and the output end of the calculation module is connected with the input end of the switching control module;
the input end of the state indication module inputs a logic instruction, and the output end of the state indication module is connected with the input end of the logic output module;
the output end of the logic output module is connected with the local equipment valve;
the calculation module is used for calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value or not, and outputting a corresponding judgment result;
the state indication module is used for judging the current running state of the unit and the valve mode of the local equipment;
the switching control module is used for switching instructions according to the judging result, the current running state and the on-site equipment valve mode;
and the logic output module is used for outputting the switched instruction to the on-site equipment valve.
Working principle: the embodiment comprises an operation control module comprising a calculation module, a switching control module, a state indication module and a logic output module; calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value, and generating a judging result; outputting a switched instruction to the on-site equipment valve according to the judging result, the current running state and the on-site equipment valve mode switching instruction; the abnormal condition of the unit caused by the error command transmission of the operator during the unit operation is solved, and the abnormal unit caused by the misoperation of the operator is avoided.
Example 2:
in this embodiment, a specific configuration of the operation control module is described based on embodiment 1 described above as shown in fig. 1.
The computing module comprises a first switching block 1, an adding block 2 and a high-low block 3;
the input end of the first switching block 1 is connected with the output end of the map module, and the output end of the first switching block 1 is connected with the input end of the adding block 2;
the first input end of the adding block 2 is connected with the output end of the map module, and the second input end of the adding block 2 is connected with the input end of the high-low block 3;
the output end of the high-low block 3 is connected with the input end of the switching control module.
Further, the switching control module comprises a first AND block 4, a second switching block 5 and a second AND block 6;
the first input end of the first and block 4 is connected with the output end of the high-low block 3, the second input end of the second and block 4 is connected with the second input end of the second and block 6, and the third input end of the first and block 4 is connected with the output end of the station module; the output end of the first and block 4 is connected with the input end of the second switching block 5;
the first input end of the second AND block 6 is connected with the output end of the map module, and the output end of the second AND block 6 is connected with the input end of the logic output module;
the first input end of the second switching block 5 is lapped between the first input end of the adding block 2 and the output end of the map module; the output end of the second switching block 5 is connected with the input end of the logic output module.
Further, the status indication module comprises a first input block 7, a second input block 8, a test block 9, a third and block 13, or a block 10;
a first input end of the third and block 13 is connected with an output end of the first input block 7, a second input end of the third and block 13 is connected with an output end of the second input block 8, and an output end of the third and block 13 is connected with a first input end of the or block 10;
a second input of the or block 10 is connected to an output of the test block 9, and an output of the or block 10 is connected to a second input of the second and block 6.
Further, the logic output module comprises a third switching block 11 and a fourth switching block 12;
the input end of the third switching block 11 is connected with the output end of the map module, the second input end of the addition block 2, the output end of the second AND block 6 and the output end of the second switching block 5; the output end of the third switching block 11 is connected with the input end of the fourth switching block 12;
the input end of the fourth switching block 12 is connected with the output end of the OR block 10 and the output end of the second switching block 5, and the output end of the fourth switching block 12 is connected with a local equipment valve.
Further, the status indication module also includes a non-block 14;
the input of the non-block 14 is connected to the output of the or block 10, the output of the non-block 14 being lapped between the second input of the first and block 4 and the second input of the second and block 6.
Working principle: the embodiment is based on an Ovation system, so that when the machine set is operated, the machine set is prevented from being abnormal due to a fault-transmission instruction in a manual valve mode. As shown in fig. 1, the first switching block 1 is used for outputting an instruction before switching when the valve is switched to the manual mode, so as to realize undisturbed switching. The function of the adder block 2 is to calculate the deviation of the current input instruction from the previous instruction. The function of the high-low block 3 is to determine whether the deviation between the current input command and the previous command is greater than the set value, and the present embodiment sets the set value to 5, if the deviation is greater than 5, the output is TRUE, otherwise the output is FALSE. The first and block 4 is used for judging whether the unit is in operation or the valve is not in a debugging mode, the valve is in a manual mode, the instruction deviation is larger than 5, the output is TRUE, and otherwise, the output is FALSE. The second switching block 5 is used for outputting a hold last instruction when the first and block 4 outputs TRUE, which means that the current instruction deviation is greater than 5, i.e. an invalid instruction, and outputting a current input instruction, i.e. a valid instruction, if the first and block 4 outputs FALSE. The second and block 6 functions in operation or the valve is not in debug mode, the valve is in manual mode, the output is TRUE, and otherwise the output is FALSE. The third switching block 11 has the function that when the output of the second and the block 6 is TRUE, the output is the output of the second switching block 5, for example, when the output of the second and the block 6 is FALSE, the output is the output of a MASTATION module, the first input block 7, the second input block 8 and the test block 9 represent the running state and the valve mode of the unit, and the running states of the unit are described as different running states, so that the running is ensured not to be misoperation, the running in the unit shutdown state or the maintenance state or the debugging state is facilitated, and the on-site equipment or the executor can be operated in the whole process. Or block 10 is used to determine the state of the unit, such as the unit being out of service or the door being in debug mode, or block 10 outputting TRUE, otherwise outputting FALSE. The fourth switching block 12 is used for outputting a gate-adjusting instruction as an output of the mastat module when the unit is in the shutdown mode or the gate-adjusting is in the debug mode, otherwise outputting the gate-adjusting instruction as an output of the second switching block 5.
When the unit operates and the valve is in a manual mode, an operator manually gives an instruction which is higher than the current instruction by + -5, the high-low block 3 outputs TRUE, the first and the block 4 outputs TRUE, and the second switching block 5 outputs YES, namely, the last instruction is kept, namely, the current input instruction is an invalid instruction.
When the unit is operated and the valve is in the debugging and manual modes, or the output of the block 10 is TRUE, the output of the fourth switching block 12 is NO, the output of the second and block 6 is FALSE, the output of the third switching block 11 is NO, namely the valve instruction output is the direct output of MASTETION, namely the output range is 0-100.
When the machine set is stopped and the valve is in a manual mode, or the output of the block 10 is TRUE, the output of the fourth switching block 12 is NO, the output of the second and the block 6 is FALSE, the output of the third switching block 11 is NO, namely the valve instruction output is the direct output of the MASTETION module, namely the output range is 0-100. When the valve is in the automatic mode, the valve command is the PID regulator output.
The operation control module provided in this embodiment has four functions, first, when the unit operates and the valve is in the manual mode, the valve command can only be input within the range of ±5 (different systems or projects can be followed, self definition is achieved, and the proposal does not exceed the value), and the exceeding of ±5 is an invalid command. Secondly, when the unit operates and the valve is in a manual mode, and when the valve is in a test mode, an operator can manually operate 0-100 instructions to be effective instructions. Thirdly, when the unit is stopped and the valve is in a manual mode, an operator can manually input 0-100 effective instructions. Fourth, when the valve is in automatic mode, the valve command is only related to the PID regulation output, regardless of whether the unit is shut down or not. The four functions can effectively meet the condition that an operator operates the valve in any mode under any condition of the unit, and unit abnormality caused by misoperation of the operator can be completely avoided.
Other portions of this embodiment are the same as those of embodiment 1 described above, and thus will not be described again.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.
Claims (6)
1. An anti-misoperation system for running a thermal power unit is connected with a local equipment valve; the system is characterized by comprising a PID control module, a station module and an operation control module which are connected in sequence;
the operation control module comprises a calculation module, a switching control module, a state indication module and a logic output module;
the input end of the calculation module is connected with the output end of the map module, and the output end of the calculation module is connected with the input end of the switching control module;
the input end of the state indication module inputs a logic instruction, and the output end of the state indication module is connected with the input end of the logic output module;
the output end of the logic output module is connected with the local equipment valve;
the calculation module is used for calculating the deviation between the current input instruction and the previous instruction, judging whether the deviation exceeds a set value or not, and outputting a corresponding judgment result;
the state indication module is used for judging the current running state of the unit and the valve mode of the local equipment;
the switching control module is used for switching instructions according to the judging result, the current running state and the on-site equipment valve mode;
and the logic output module is used for outputting the switched instruction to the on-site equipment valve.
2. The thermal power generating unit running misoperation prevention system according to claim 1 is characterized in that the calculation module comprises a first switching block (1), an addition block (2) and a high-low block (3);
the input end of the first switching block (1) is connected with the output end of the map module, and the output end of the first switching block (1) is connected with the input end of the adding block (2);
the first input end of the adding block (2) is connected with the output end of the map module, and the second input end of the adding block (2) is connected with the input end of the high-low block (3);
the output end of the high-low block (3) is connected with the input end of the switching control module.
3. The misoperation prevention system for thermal power plant operation according to claim 2, characterized in that the switching control module comprises a first and block (4), a second switching block (5) and a second and block (6);
the first input end of the first and block (4) is connected with the output end of the high-low block (3), the second input end of the second and block (4) is connected with the second input end of the second and block (6), and the third input end of the first and block (4) is connected with the output end of the map module; the output end of the first and block (4) is connected with the input end of the second switching block (5);
the first input end of the second and block (6) is connected with the output end of the map module, and the output end of the second and block (6) is connected with the input end of the logic output module;
the first input end of the second switching block (5) is lapped between the first input end of the adding block (2) and the output end of the station module; the output end of the second switching block (5) is connected with the input end of the logic output module.
4. A thermal power generating unit operation error preventing system according to claim 3, wherein the status indication module comprises a first input block (7), a second input block (8), a test block (9), a third and block (13), or a block (10);
the first input end of the third and block (13) is connected with the output end of the first input block (7), the second input end of the third and block (13) is connected with the output end of the second input block (8), and the output end of the third and block (13) is connected with the first input end of the OR block (10);
the second input end of the OR block (10) is connected with the output end of the test block (9), and the output end of the OR block (10) is connected with the second input end of the second AND block (6).
5. The misoperation prevention system for thermal power plant operation according to claim 4 is characterized in that the logic output module comprises a third switching block (11) and a fourth switching block (12);
the input end of the third switching block (11) is connected with the output end of the map module, the second input end of the addition block (2), the output end of the second AND block (6) and the output end of the second switching block (5); the output end of the third switching block (11) is connected with the input end of the fourth switching block (12);
the input end of the fourth switching block (12) is connected with the output end of the OR block (10) and the output end of the second switching block (5), and the output end of the fourth switching block (12) is connected with a local equipment valve.
6. A thermal power plant operation anti-misoperation system according to claim 4, characterized in that the status indication module further comprises a non-block (14);
the input end of the non-block (14) is connected with the output end of the or block (10), and the output end of the non-block (14) is lapped between the second input end of the first and block (4) and the second input end of the second and block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321084985.1U CN220603867U (en) | 2023-05-08 | 2023-05-08 | Misoperation prevention system for running of thermal power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321084985.1U CN220603867U (en) | 2023-05-08 | 2023-05-08 | Misoperation prevention system for running of thermal power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220603867U true CN220603867U (en) | 2024-03-15 |
Family
ID=90169172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321084985.1U Active CN220603867U (en) | 2023-05-08 | 2023-05-08 | Misoperation prevention system for running of thermal power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220603867U (en) |
-
2023
- 2023-05-08 CN CN202321084985.1U patent/CN220603867U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111102018B (en) | Control method and control system for preventing over-rated power of low-pressure turbine | |
| CN108266398B (en) | Stable operation method when primary air fan frequency conversion cutting frequency | |
| CN220603867U (en) | Misoperation prevention system for running of thermal power generating unit | |
| CN111668940A (en) | Power station control system and control method | |
| CN105098968A (en) | Nuclear power plant primary loop hydraulic test power failure control method and system | |
| CN105332744B (en) | Thermal power generation unit prevents the check method of protection system in heat power engineering failure | |
| CN208110360U (en) | A kind of pumping plant tele-control system | |
| CN206863557U (en) | A kind of alternating current-direct current oil pump linkage control system | |
| KR20050091916A (en) | Off line state evalution system and method for large scale power system | |
| KR100716897B1 (en) | Apparatus for switching of load | |
| CN107918430B (en) | Direct-current control protection device for realizing on-line maintenance of switching value loop | |
| CN110134060A (en) | A kind of electric control system of hydraulic cylinder test platform | |
| KR20220001937U (en) | Smart circuit breaker for distributed Resources that can open or close according to power quality | |
| CN113409976B (en) | Non-safety-level process control system of nuclear power station | |
| CN212512526U (en) | Steam pocket water supply accident standby system | |
| CN117559567B (en) | Control method and device of multiport energy router | |
| CN218093529U (en) | Cross switching device for gas blower | |
| CN112619862B (en) | Method and system for controlling sealing wind pressure of coal mill inlet | |
| CN113586364B (en) | Device, method and system for detecting yaw speed fault of fan yaw system | |
| CN211351826U (en) | Low-voltage bus intelligent overload limiter | |
| CN110108926B (en) | Method for troubleshooting switching value instruction of gas turbine | |
| CN113852307A (en) | Diesel generator control system and method | |
| Pierre | Microprocessor-based load shedding keeps industry systems in balance | |
| JP2000204906A (en) | Overload preventing device for transmission line capacity in thermal power plant | |
| KR200347633Y1 (en) | Hardware structure of intelligent electronic device for fault detection and selective auto-reclosure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |