Power plant control device based on DCS

Abstract

The utility model provides a DCS-based power plant control device, which relates to the thermoelectric control field, and comprises a master control room and a sub-control room for independently controlling specific working conditions, a master control terminal is arranged in the master control room, bidirectional signal transmission is established between the master control room and the sub-control room, the sub-control room comprises an information acquisition unit for acquiring information, and the information acquisition unit is connected with the master control terminal. And the information processing unit is used for feeding back the signal. According to the power plant control device based on the DCS, through the arrangement of the master control room and the sub-control room, the sub-control room directly processes the information of the corresponding area and feeds back the processed result to the master control room, and the master control room does not need to carry out centralized processing on the information of all the information acquisition units under the normal condition; only under special circumstances, the master control room needs to perform linkage adjustment on a plurality of specified sub-control rooms according to the information of the corresponding information acquisition units, so that the sub-control rooms in the area can be independently adjusted through the arrangement, and the requirement for the performance of a processor in the master control room is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of thermoelectric control, in particular to a DCS-based power plant control device. Background Art

[0002] A method for optimizing power plant unit frequency regulation based on data analysis and modeling is disclosed in the Chinese invention patent application publication CN116345495B. The method includes the following steps: collecting operating data for each unit in the power plant, constructing a key factor weight distribution model, grouping each type of operating parameter for each unit into a separate set, constructing a dimensional space corresponding to the set of power plant unit operating data in a multi-dimensional space, finding the optimal global solution in this dimensional space using a gradual simulation algorithm, using the set of operating parameters at this time as the optimal strategy for unit frequency regulation control, and applying this optimal control strategy to the power plant unit operation to achieve power plant unit frequency regulation optimization.

[0003] This technical solution optimizes the frequency regulation control strategy of power plant units by utilizing data analysis and modeling methods, improving the accuracy and efficiency of frequency regulation control, thereby achieving more stable, efficient, and intelligent power production. However, this technical solution performs both signal acquisition and signal processing on the same processor, which places high demands on the processor and cannot individually adjust the execution parameters within a specific execution area. Furthermore, this technical solution only processes instantaneous data and does not effectively store the data. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a power plant control device based on DCS, which reduces the performance requirements of the processor and can independently control the execution parameters of specific execution areas and effectively save data.

[0005] Technical Solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a DCS-based power plant control device, including a main control room and a sub-control room for independently controlling specific working conditions, a main control terminal is provided inside the main control room, and two-way signal transmission is established between the main control room and the sub-control room, the sub-control room includes an information acquisition unit for acquiring information, and an information processing unit for providing feedback on the signal, and two-way signal transmission is established between the sub-control room and the information processing unit, and an information storage unit is provided between the sub-control room and the main control room for recording signal transmission records between the sub-control room and the main control room, signal transmission records between the information processing unit and the sub-control room, and signal transmission records between the information acquisition unit and the sub-control room.

[0007] Furthermore, there are multiple sub-control rooms, and two adjacent sub-control rooms share one information storage unit, and the transmission information records of the same sub-control room are simultaneously recorded in the two information storage units.

[0008] Furthermore, all the information storage units independently establish two-way signal transmission with the main control room.

[0009] Furthermore, the information storage unit is divided into storage unit A and storage unit B. Two transmission information of the same sub-control room are respectively recorded in storage unit A in one information storage unit and storage unit B in another information storage unit. The information storage unit preferentially overwrites the record in storage unit A.

[0010] Furthermore, the signal transmission mode between the sub-control room and the main control room, the signal transmission mode between the information processing unit and the sub-control room, the signal transmission mode between the information acquisition unit and the sub-control room, and the signal transmission mode between the information storage unit and the main control room are wired transmission and / or wireless transmission.

[0011] Furthermore, the sub-control room includes at least one information collection unit and at least one information processing unit. The sub-control room also includes a sub-control terminal. The signal transmission between the sub-control terminal and the sub-control room is also recorded in two adjacent information storage units at the same time.

[0012] The beneficial effects of the present invention are:

[0013] 1. The DCS-based power plant control device has a main control room and sub-control rooms. The sub-control rooms directly process the information of the corresponding areas and transmit the results to the main control room. The collected information has been stored in the information storage unit. Under normal circumstances, the main control room does not need to centrally process the information of all information collection units. Only in special circumstances does the main control room need to make linkage adjustments to designated multiple sub-control rooms based on the information of the corresponding information collection units. Through such a setting, the sub-control rooms in the area can be adjusted separately, reducing the performance requirements of the processor in the main control room.

[0014] 2. This DCS-based power plant control device includes an information storage unit located between the sub-control rooms and the main control room, which records signal transmissions between the sub-control rooms and the main control room, as well as between the information processing unit and the sub-control rooms, and between the information collection unit and the sub-control rooms. If there are multiple sub-control rooms, two adjacent sub-control rooms share a single information storage unit, and transmission information from the same sub-control room is simultaneously recorded in both information storage units. This configuration allows for efficient data storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the workflow of the utility model;

[0016] Figure 2 This is a schematic diagram of the flow between the master control terminal and the information storage unit of the present invention;

[0017] Figure 3 This is a schematic diagram of the sub-control end process of this utility model.

[0018] Among them, 1. Main control room; 2. Main control terminal; 3. Information acquisition unit; 4. Information processing unit; 5. Information storage unit; 51. A storage unit; 52. B storage unit; 7. Sub-control room; 8. Sub-control terminal. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See Figure 1-Figure 3 A DCS-based power plant control device includes a master control room 1 and a sub-control room 7 for independently controlling specific working conditions. The master control room 1 is provided with a processor for overall execution and dispatching signals, and the sub-control room 7 is provided with a processor for independently performing information analysis and execution in a specific area and dispatching signals. The processor in the master control room 1 communicates data with the processor in the sub-control room 7. The master control room 1 is internally provided with a master control terminal 2, which is a touch control screen that displays control information and control results on the screen and feeds back information to the processor in the master control room 1 through touch operation. Bidirectional signal transmission is established between the master control room 1 and the sub-control room 7. The sub-control room 7 includes an information collection unit 3 for collecting information. The information collection unit 3 is a sensor of various types. This part of the sensor can collect the necessary information in the unit, and an information processing unit 4 that provides feedback on the signal. The information processing unit 4 is an actuator. This part of the actuator can change the execution parameters of the unit. After the execution parameters are changed, the effect after execution can be recorded by the sensor. The sub-control room 7 only feeds back the signal of the information collection unit 3 and the execution signal of the information processing unit 4 to the main control room 1. The main control room 1 only transmits the judgment information based on the information collected by the information collection unit 3 and the information executed by the main control terminal 2 to the sub-control room 7;

[0021] Two-way signal transmission is established between the sub-control room 7 and the information processing unit 4. The sub-control room 7 needs to determine whether the information processing unit 4 has executed the command, and determine whether to make the next adjustment based on the signal feedback from the information acquisition unit 3. An information storage unit 5 is provided between the sub-control room 7 and the main control room 1 to record the signal transmission records between the sub-control room 7 and the main control room 1, the signal transmission records between the information processing unit 4 and the sub-control room 7, and the signal transmission records between the information acquisition unit 3 and the sub-control room 7. Recording the execution command is beneficial to optimizing the execution steps and the entire device through a large model processing device based on the data in the later stage. At the same time, after a failure occurs in the later stage, the cause of the failure can be found in time according to the data.

[0022] There are multiple sub-control rooms 7, and two adjacent sub-control rooms 7 share one information storage unit 5. The transmission information records of the same sub-control room 7 are recorded in two information storage units 5 at the same time. Through such a setting, the information can be backed up, thereby avoiding the loss of stored information.

[0023] All the information storage units 5 independently establish two-way signal transmission with the main control room 1 , and the processor in the main control room 1 can retrieve the information stored in the information storage unit 5 through signal transmission for use as a basis for making judgments.

[0024] The information storage unit 5 is divided into an A storage unit 51 and a B storage unit 52. The two transmission information of the same sub-control room 7 are respectively recorded in the A storage unit 51 in one information storage unit 5 and the B storage unit 52 in another information storage unit 5. The information storage unit 5 gives priority to overwriting the records in the A storage unit 51. The amount of information stored in the information storage unit 5 is limited, so it is necessary to periodically overwrite the stored information. During the overwriting process, the information with backup is overwritten first, and the overwriting is performed from the beginning of the recording end. Through such a setting, the information storage unit 5 can be effectively utilized, and at the same time, it can be ensured that the information has a backup.

[0025] The signal transmission mode between the sub-control room 7 and the main control room 1, the signal transmission mode between the information processing unit 4 and the sub-control room 7, the signal transmission mode between the information acquisition unit 3 and the sub-control room 7, and the signal transmission mode between the information storage unit 5 and the main control room 1 are wired transmission and / or wireless transmission. Wired transmission has good stability and wireless transmission is easy to set up. They can be mixed or used separately according to the use environment.

[0026] The sub-control room 7 includes at least one information collection unit 3 and at least one information processing unit 4. Multiple sensors and actuators may be required for specific information collection and execution. The sub-control room 7 also includes a sub-control terminal 8. The sub-control terminal 8 has the same structure as the main control terminal 2, but the sub-control terminal 8 only executes and adjusts specific units. The signal transmission between the sub-control terminal 8 and the sub-control room 7 is also recorded in the two adjacent information storage units 5 at the same time.

[0027] In the combustion chamber, the combustion temperature sensor and the oxygen concentration sensor serve as the information acquisition unit 3, and the pulverized coal injector and the oxygen supplier serve as the information processing unit 4. The sub-control room 7 in this unit can adjust the coal injection amount of the pulverized coal injector and the oxygen supply amount of the oxygen supplier according to the information of the combustion temperature and oxygen concentration, so as to adjust the temperature in the combustion chamber to a suitable temperature;

[0028] At the coal powder supply point, the silo level sensor serves as the information collection unit 3, and the feeding mechanism serves as the information processing unit 4. The sub-control room 7 in this unit can increase the feeding speed of the feeding mechanism according to the information of the silo level sensor so that the material can be replenished in time. At the same time, the decision to reduce the injection amount of the coal powder injector is made in the combustion chamber and transmitted to the main control room 1 through the sub-control room 7 of this unit. Combined with other information, a signal can be given to the sub-control room 7 at the coal powder supply point to suspend the supply of coal powder. Under the same circumstances, the sub-control room 7 can change the feeding speed of the feeding mechanism or even reduce the feeding speed of the feeding mechanism according to different signals, so as to coordinate the whole.

[0029] For example, when electricity consumption is at its peak or off-peak, the main control room 1 makes adjustments to reduce the amount of power generated. The main control room 1 only needs to transmit the parameter standards of the area where the sub-control room 7 is located to the sub-control room 7. The sub-control room 7 can make specific adjustments to the information processing unit 4 based on the information collected by the information collection unit 3 and the adjustment requirements issued by the main control room 1.

[0030] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power plant control device based on a DCS, comprising a master control room (1) and a sub-control room (7) for independently controlling specific working conditions, wherein a master control terminal (2) is provided inside the master control room (1), and bidirectional signal transmission is established between the master control room (1) and the sub-control room (7), and characterized in that: The sub-control room (7) comprises an information collection unit (3) for collecting information, and an information processing unit (4) for providing feedback on the signal. Two-way signal transmission is established between the sub-control room (7) and the information processing unit (4). An information storage unit (5) for recording signal transmission records between the sub-control room (7) and the main control room (1), signal transmission records between the information processing unit (4) and the sub-control room (7), and signal transmission records between the information collection unit (3) and the sub-control room (7) is provided between the sub-control room (7) and the main control room (1).

2. A DCS-based power plant control device according to claim 1, characterized in that: There are multiple sub-control rooms (7), and two adjacent sub-control rooms (7) share one information storage unit (5). Transmission information records of the same sub-control room (7) are simultaneously recorded in the two information storage units (5).

3. The DCS-based power plant control device according to claim 2, characterized in that: All the information storage units (5) independently establish two-way signal transmission with the main control room (1).

4. A DCS-based power plant control device according to any one of claims 1 to 3, characterized in that: The information storage unit (5) is divided into an A storage unit (51) and a B storage unit (52). Two transmission information of the same sub-control room (7) are respectively recorded in the A storage unit (51) in one information storage unit (5) and the B storage unit (52) in another information storage unit. The information storage unit (5) preferentially overwrites the record in the A storage unit (51).

5. The DCS-based power plant control device according to claim 4, characterized in that: The signal transmission mode between the sub-control room (7) and the main control room (1), the signal transmission mode between the information processing unit (4) and the sub-control room (7), the signal transmission mode between the information acquisition unit (3) and the sub-control room (7), and the signal transmission mode between the information storage unit (5) and the main control room (1) are wired transmission and / or wireless transmission.

6. The DCS-based power plant control device according to claim 5, characterized in that: The sub-control room (7) comprises at least one information collection unit (3) and at least one information processing unit (4). The sub-control room (7) further comprises a sub-control terminal (8). Signal transmission between the sub-control terminal (8) and the sub-control room (7) is also simultaneously recorded in two adjacent information storage units (5).

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