TWI557390B - Control system for controlling a power plant system - Google Patents

Description

Machine furnace electric control system

The invention relates to a control system, in particular to a machine furnace electrical control system.

The conventional process control system controls the process devices to perform a series of processes by installing corresponding controllers on each process device. For example, controllers used in process equipment such as boilers, steam turbines, generators, or substations (machine furnaces) in power plant systems usually belong to different types and manufacturers, so each controller has its own unique logic compilation environment and logic language. Moreover, the communication interface and communication program between each controller and the human-machine interface are also different, so the following disadvantages are caused: since each controller uses its own software interface, the engineer needs to learn the unique characteristics of each controller on the maintenance surface. The software maintenance mode, and on the operation surface, the operator needs to learn the unique operation interface of each controller; once the manufacturer of a certain controller exits the market, the process factory needs to purchase another manufacturer controller, and the original control logic It cannot be applied to this other manufacturer's controller and must be rewritten. Therefore, it is necessary to seek a solution.

Accordingly, it is an object of the present invention to provide a machine furnace electrical control system.

The machine furnace electric control system of the invention is suitable for controlling a boiler, a steam turbine, and a generator of a power plant system, and comprises a human machine interface unit, a first controller, a first input/output (I/O) unit, and a second A controller, a second input/output (I/O) unit, a third controller, and a third input/output (I/O) unit. The human interface unit is used to compile a control logic associated with the power plant system. The first controller includes a first processing module and a first memory module, the first memory module stores control logic sent by the human interface unit, and includes a first command interpreter, and a Generic data logic engine program unit. The first input/output (I/O) unit is used as a data transmission interface between the first controller and the boiler, wherein the first processing module of the first controller executes the general data logic engine program unit And the first command interpreter to transmit the control logic to the first command interpreter through the general data logic engine program unit, and then the first input/output (I/O) unit will complete the solution The translated control logic is passed to the boiler to control the boiler to operate in accordance with the control logic. The second controller includes a second processing module and a second memory module. The second memory module stores control logic sent by the human interface unit, and includes a second command interpreter, and the Generic data logic engine program unit. The second input/output (I/O) unit is used as a data transmission interface between the second controller and the steam turbine, wherein the second processing module of the second controller executes the general data logic engine program unit And the second command interpreter to pass the GM The logic engine program unit transmits the control logic to the second command interpreter interpretation, and the second input/output (I/O) unit transmits the control logic that completes the interpretation to the steam turbine to control the steam turbine Operates according to the control logic. The third controller includes a third processing module and a third memory module. The third memory module stores control logic sent by the human interface unit, and includes a third command interpreter, and the Generic data logic engine program unit. The third input/output (I/O) unit is used as a data transmission interface between the third controller and the generator, wherein the third processing module of the third controller executes the general data logic engine program And the third command interpreter transmits the control logic to the third command interpreter through the general data logic engine program unit, and then the third input/output (I/O) unit is completed Interpreted control logic is passed to the generator to control the generator to operate in accordance with the control logic.

11‧‧‧First Input/Output (I/O) Unit

12‧‧‧Second input/output (I/O) unit

13‧‧‧ Third Input/Output (I/O) Unit

14‧‧‧Fourth Input/Output (I/O) Unit

2‧‧‧Common Data Logic Engine Program Unit

3‧‧‧Human Machine Interface Unit

31‧‧‧Control logic

41~44‧‧‧Steps

5‧‧‧First controller

51‧‧‧First Processing Module

52‧‧‧First Memory Module

521‧‧‧First Order Interpreter

523‧‧‧First variable space and input/output (I/O) space address comparison table

6‧‧‧Second controller

61‧‧‧Second processing module

62‧‧‧Second memory module

621‧‧‧Second Command Interpreter

623‧‧‧Second variable space and input/output (I/O) space address comparison table

7‧‧‧ Third controller

71‧‧‧ Third Processing Module

72‧‧‧ third memory module

721‧‧‧ Third Order Interpreter

723‧‧‧ third variable space and input/output (I/O) space address comparison table

8‧‧‧fourth controller

81‧‧‧4th processing module

82‧‧‧fourth memory module

821‧‧‧ Fourth Command Interpreter

823‧‧‧4nd variable space and input/output (I/O) space address comparison table

91‧‧‧Boiler

92‧‧‧ Turbine

93‧‧‧Generator

94‧‧‧Substation

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a system architecture diagram illustrating the system architecture of the machine furnace electrical control system of the present invention; FIG. 2 is a functional block The figure shows a first controller and a human-machine interface unit in an embodiment of the machine-furnace control system of the present invention; FIG. 3 is a functional block diagram illustrating a second controller in an embodiment of the machine-furnace control system of the present invention; And a human-machine interface unit; FIG. 4 is a functional block diagram illustrating a third controller and a human-machine interface unit in an embodiment of the machine furnace electrical control system of the present invention; 5 is a functional block diagram illustrating a fourth controller and a human-machine interface unit in an embodiment of the electric furnace control system of the present invention; FIG. 6 is a flow chart illustrating the preparation of a general-purpose data logic engine program in an embodiment of the present invention; The unit and the implementation process of placing it into the controller; Annex 1 is a computer operation screen showing the logical forced operation function of the human interface unit; and the attachment 2 is a computer operation screen showing the wisdom of the human interface unit Two-way navigation between the process map and the control logic diagram.

Referring to Figures 1 to 6 and Annexes 1, 2, the embodiment of the machine furnace electrical control system of the present invention is applicable to a boiler plant 91, a steam turbine 92, a generator 93 and a substation 94 for controlling a power plant system, and includes a human machine interface. (HMI) unit 3, a first controller 5, a first input/output (I/O) unit 11, a second controller 6, a second input/output (I/O) unit 12, a first A three controller 7, a third input/output (I/O) unit 13, a fourth controller 8, and a fourth input/output (I/O) unit 14.

The human interface unit 3 is used to compile a control logic 31 associated with the power plant system and display a process map and a logic diagram associated with the control logic 31 (see Annexes 1 and 2). The first input/output (I/O) unit 11 is used as a data transmission interface between the first controller 5 and the boiler 91. The second input/output (I/O) unit 12 is used as a data transmission interface between the second controller 6 and the steam turbine 92. The third input/output (I/O) unit 13 is used as a data transmission interface between the third controller 7 and the generator 93. The fourth input/output (I/O) unit 14 is used as the A data transmission interface between the fourth controller 8 and the substation 94.

As shown in FIG. 2 , the first controller 5 includes a first processing module 51 and a first memory module 52 . The first memory module 52 stores the control logic 31 sent by the human interface unit 3, and includes a first command interpreter 521, a unified data logic engine (Unified Data Logic Engine) program unit 2, and a first A variable space and input/output (I/O) space address comparison table 523, wherein the variable space and input/output (I/O) space address comparison table 523 records a variable space associated with the control logic 31. A comparison relationship with an input/output space associated with the first input/output (I/O) unit 11.

The first processing module 51 executes the general data logic engine program unit 2 and the first command interpreter 521 to transmit the control logic 31 to the first command interpreter through the universal data logic engine program unit 2 521 interpretation. In turn, the first input/output (I/O) unit 11 transmits the control logic 31 that completes the interpretation to the boiler 91 to control the boiler 91 to operate in accordance with the control logic 31.

As shown in FIG. 3, the second controller 6 includes a second processing module 61 and a second memory module 62. The second memory module 62 stores the control logic 31 transmitted from the human interface unit 3, and includes a second command interpreter 621, a general data logic engine program unit 2, and a second variable space and input/ An output (I/O) space address comparison table 623, wherein the variable space and input/output (I/O) space address comparison table 623 records a variable space associated with the control logic 31 associated with the first A comparison between the input/output spaces of the two input/output (I/O) units 12.

The second processing module 61 executes the general data logic engine program unit 2 and the second command interpreter 621 to transmit the control logic 31 to the second command interpreter through the universal data logic engine program unit 2 621 interpretation. In turn, the second input/output (I/O) unit 12 transmits control circuitry 31 that completes the interpretation to the turbine 92 to control the turbine 92 to operate in accordance with the control logic 31.

As shown in FIG. 4, the third controller 7 includes a third processing module 71 and a third memory module 72. The third memory module 72 stores the control logic 31 transmitted from the human interface unit 3, and includes a third command interpreter 721, a general data logic engine program unit 2, and a third variable space and input/ An output (I/O) space address comparison table 723, wherein the variable space and the input/output (I/O) space address comparison table 723 record a variable space associated with the control logic 31 associated with the first A comparison between the input/output spaces of the three input/output (I/O) unit 13.

The third processing module 71 executes the general data logic engine program unit 2 and the third command interpreter 721 to transmit the control logic 31 to the third command interpreter through the universal data logic engine program unit 2 721 interpretation. In turn, the third input/output (I/O) unit 13 transmits the control logic 31 that completes the interpretation to the generator 93 to control the generator 93 to operate in accordance with the control logic 31.

As shown in FIG. 5, the fourth controller 8 includes a fourth processing module 81 and a fourth memory module 82. The fourth memory module 82 stores the control logic 31 transmitted from the human interface unit 3, and includes a fourth command interpreter 821, a general data logic engine program unit 2, and a fourth variable. A space and input/output (I/O) space address comparison table 823, wherein the variable space and input/output (I/O) space address comparison table 823 records a variable space associated with the control logic 31 and a Corresponding to the contrast relationship between the input/output spaces of the fourth input/output (I/O) unit 14.

The fourth processing module 81 executes the general data logic engine program unit 2 and the fourth command interpreter 821 to transmit the control logic 31 to the fourth command interpreter through the universal data logic engine program unit 2 821 interpretation. In turn, the fourth input/output (I/O) unit 14 transmits the control logic 31 that completes the interpretation to the substation 94 to control the substation 94 to operate in accordance with the control logic 31.

In addition, in the embodiment, the human interface unit 3 is further provided for the user to perform a Force On/Off operation on the values of the analog input (AI) and the digital input (DI). As shown in the logic forcing function computer operation screen of the upper half of the human-machine interface unit 3 of the attachment 1, the display user is forcibly setting the logical value (Force value) of the process component numbered RMP021 to 600, and The values on the purple line in the logic diagram are all values that are forced to be set. In addition, the Force component list in the lower part of Annex 1 allows the user to unforce single for a single process component or to unforce all process components listed in the table (Unforce all). ).

Furthermore, the computer operation screen of the accessory 2 is a two-way navigation function between the smart process diagram and the control logic diagram of the human interface unit in the embodiment.

As for the embodiment of the present invention, the general data logic engine is written. The execution flow of the program unit 2 and its controller (such as the first, second, third, and fourth controllers 5, 6, 7, and 8) is as shown in FIG. 6. First, as shown in step 41, the general data logic engine program unit 2 is written using the logic writing tool publicly sold by the manufacturer of the controller.

Next, as shown in step 42, the controller is initialized using the controller manufacturer's controller initialization tool and the I/O is configured.

Next, as shown in step 43, the general data logic engine program unit 2 is placed in the controller using a logic download tool provided by the controller manufacturer.

Therefore, after the above step 43 is completed, as shown in step 44, the controller is taken over by the general data logic engine program unit 2, so that the original logical transfer work and syntax of the controller are no longer needed, and the general data is used in full. The general logic authoring tool and syntax of the logic engine program unit 2, and as illustrated above with respect to Figures 2 through 5, the logic control performed in the controller will be processed by the general data logic engine program unit 2.

In summary, the electric furnace control system of the present invention has the following advantages and effects: different controllers can be seamlessly integrated by placing the general data logic engine program unit 2 in different controllers; the operator can use the same The human-machine interface unit 3 monitors and operates the boiler 91, the steam turbine 92, the generator 93, and the substation 94; the engineer can use the same human-machine interface unit 3 to write and compile control logic; even if the controller of a certain controller exits In the market, the engineer only needs to write the general data logic engine program unit 2 for the other manufacturer controllers according to the flow shown in FIG. 6, and put the general data logic engine program unit 2 into the other manufacturer controllers, and then The original control logic 31 is continued without rewriting the control logic 31; therefore, the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification content of the present invention are still It is within the scope of the patent of the present invention.

2‧‧‧Common Data Logic Engine Program Unit

3‧‧‧Human Machine Interface Unit

31‧‧‧Control logic

5‧‧‧First controller

51‧‧‧First Processing Module

52‧‧‧First Memory Module

521‧‧‧First Order Interpreter

523‧‧‧First variable space and input/output (I/O) space address comparison table

Claims (10)

An electric furnace control system for controlling a boiler, a steam turbine, and a generator of a power plant system, and comprising: a human-machine interface unit for compiling a control logic associated with the power plant system; a first controller, including a a first processing module and a first memory module, wherein the first memory module stores control logic transmitted by the human interface unit, and includes a first command interpreter and a general data logic engine program unit; a first input/output (I/O) unit for serving as a data transmission interface between the first controller and the boiler, wherein the first processing module of the first controller executes the general data logic engine a program unit and the first command interpreter for transmitting the control logic to the first command interpreter through the general data logic engine program unit, and then the first input/output (I/O) unit The control logic for the completion of the interpretation is transmitted to the boiler to control the operation of the boiler according to the control logic; a second controller includes a second processing module and a second memory module, the second memory module stores the people Control logic transmitted from the interface unit, and includes a second command interpreter, and a general data logic engine program unit; a second input/output (I/O) unit for use as the second controller and a data transmission interface between the steam turbines, wherein the second processing module of the second controller executes the general data logic engine program unit and the second command interpreter to transmit the general data logic engine program The unit transmits the control logic to the second command interpreter interpretation, and the second input/output (I/O) unit transmits the control logic that completes the interpretation to the steam turbine to control the steam turbine according to the control logic The third controller includes a third processing module and a third memory module. The third memory module stores control logic sent by the human interface unit and includes a third command interpreter. And a general data logic engine program unit; and a third input/output (I/O) unit for serving as a data transmission interface between the third controller and the generator, wherein the third controller The third processing module executes the general data logic engine program unit and the third command interpreter to transmit the control logic to the third command interpreter through the universal data logic engine program unit, and then the first A three input/output (I/O) unit transmits control logic that completes the interpretation to the generator to control the generator to operate in accordance with the control logic. The electric furnace control system of claim 1, wherein the first memory module further stores a first variable space and an input/output (I/O) space address comparison table, wherein the record is associated with the control The logical variable space is associated with a control relationship associated with the input/output space of the first input/output (I/O) unit. The electric furnace control system of claim 1, wherein the second memory module further stores a second variable space and an input/output (I/O) space address comparison table, wherein the record is associated with the control Logical variable space and one Correlation relationship between input/output spaces of the second input/output unit (I/O). The electric furnace control system of claim 1, wherein the third memory module further stores a third variable space and an input/output (I/O) space address comparison table, wherein the record is associated with the control The logical variable space is associated with a control relationship associated with the input/output space of the third input/output (I/O) unit. The electric furnace control system according to claim 1 is further applicable to a substation for controlling a power plant system, and the electric furnace control system comprises: a fourth controller, comprising a fourth processing module and a fourth memory module The fourth memory module stores control logic transmitted from the human interface unit, and includes a fourth command interpreter, and the general data logic engine program unit; and a fourth input/output (I/O) a unit for performing a data transmission interface between the fourth controller and the substation, wherein the fourth processing module of the fourth controller executes the general data logic engine program unit and the fourth command interpreter Transmitting the control logic to the fourth command interpreter through the general data logic engine program unit, and then the fourth input/output (I/O) unit transmits the control logic for completing the interpretation to the substation To control the substation to operate according to the control logic. The electric furnace control system of claim 5, wherein the fourth memory module further stores a fourth variable space and an input/output (I/O) space address comparison table, wherein the record is associated with the control Logical variable space and one Corresponding to the comparison relationship between the input/output spaces of the fourth input/output (I/O) unit. The machine-furnace control system of claim 1, wherein the human-machine interface unit is further configured to display a process map and a logic diagram associated with the control logic. The machine-furnace control system of claim 7, wherein the human-machine interface unit is further configured to allow a user to operate a two-way navigation function between the process map and the logic diagram. The machine electrical control system of claim 7, wherein the human interface unit is further configured to perform a logic forcing operation on the analog input of at least one of the boiler, the steam turbine, and the generator. The machine electrical control system of claim 7, wherein the human interface unit is further configured to perform a logic forcing operation on a digital input of at least one of the boiler, the steam turbine, and the generator.