JPH0465624B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for centrally monitoring and controlling a plurality of power generation units.

[Technical Background of the Invention and Problems Therewith] A thermal power plant generally includes a plurality of power generation units each consisting of a boiler, a turbine, a generator, and their auxiliary equipment.

To monitor and control these power generation units,
A large number of monitoring instrument control and operation devices are required, the operation panel installed in the central control room becomes large, and the number of signal lines connecting the central control room and the power generation unit becomes enormous.

For this reason, in conventional thermal power plants, out of the multiple power generating units installed there, only two to three units at most are monitored in one central control room (hereinafter referred to as individual central control room). ,
They cannot be controlled, and a large number of operators are required to operate one thermal power plant, and they must communicate with each other for coordinated operation, which places a large burden on the operators. However, there was a problem in that the cost of power generation increased.

[Object of the Invention] The present invention provides a single representative central operation room (hereinafter referred to as "representative central operation room") in place of operation by individual central control rooms.
The purpose of the present invention is to provide a power plant centralized monitoring and control device that can centrally monitor and control all power generation units at a power plant.

[Summary of the Invention] For this reason, the present invention displays display signals of instruments, lamps, etc. on the operation panel of each individual central operation unit on a display provided on the central monitoring control panel of the representative central operation unit via an operation transmission device. At the same time, the operation signals operated by the operator at the representative central operation center are transmitted to the control panel of each individual central operation unit via the above-mentioned operation transmission device, and from there the operation signals are applied to each power generation unit. The computers used for this purpose are connected to man-machine equipment such as displays and consoles for each power generation unit installed in the centralized monitoring and control panel of the central operation center through monitoring transmission lines. By allowing power generation units to be shared, it is possible to handle a large amount of information, and a representative central operation center can operate multiple power generation units by a small number of people.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described, but before going into detailed explanation, an outline thereof will be explained with reference to FIG. 1.

Figure 1 shows the implementation of the present invention when the present invention is applied to an existing power plant in which eight power generation units 1 from No. 1 to No. 8 are monitored and controlled by an operation panel 2 and a computer 6 provided in each individual central operation. This is an example. In the figure, signals from instruments, lamps, etc. on the operation panel 2 are converted into digital quantities by the operation transmission device 3 and sent to the operation CRT 4 on the central monitoring control panel 10.
transmitted to. Operator 5 on central monitoring control panel 10
The signal is similarly transmitted to the operation panel 2 via the operation transmission device 3, and acts to operate the power generation unit 1 as an operation signal similar to the manual operation by an operator in an individual central operation.

On the other hand, the computer 6 for automatically operating the power generation unit 1 is installed on the operation panel 2 or directly on the power generation unit 1.
It is connected to the power generation unit 1 by process input/output signals, and monitors and controls the power generation unit 1. Further, the computer 6 displays the automatic operation status on the monitoring CRT 8 on the central monitoring control panel 10 via the monitoring transmission device 7 in order to carry out automatic operation processing of the power generation unit 1.
Further, the operator console 9, which communicates with the operator, acts on the computer 6 via the monitoring transmission device 7 as an operation command for man-machine communication for automatic operation. The above-mentioned operating CRT 4, operation panel 5, monitoring CRT 8, and operator console 9 are installed on the central monitoring control panel 10, one set for each power generation unit, for a total of eight sets.

By the way, the above-mentioned monitoring transmission device 7 is equipped with a duplicated optical transmission line formed in a loop so that the monitoring CRT 8 on the central monitoring control panel 10 can be easily shared between power generation units. . This makes it possible to monitor a large amount of information when a power generation unit is started, stopped, or abnormal.

On the other hand, the operation transmission device 3 is provided with a dedicated transmission device for each power generation unit in order to enable manual correction operations by some operators for the automatic operation of the computer 6 and backup operations in case of a failure of the computer 6. It is equipped with a high-speed, highly reliable optical transmission line. This makes it possible to perform emergency safety operations, correction operations, and backup operations in the event of an abnormality in the computer 6, etc., making it possible to safely operate the power generation unit.

The outline of the embodiment has been described above, and the details will be explained below with reference to FIG. 2 and subsequent figures.

Figure 2 shows the centralized monitoring system shown in Figure 1 in detail for one power generation unit.Due to the small number of people operating the system, there are four CRTs per power generation unit, and four CRTs are used for operation. consists of CRT40 for alarm, CRT41 for correction operation, CRT8 for monitoring, CRT80 for automation, and CRT80 for dialogue.
It is composed of CRT81.

The alarm CRT 40 receives the alarm from the operation panel 2 from the operation transmission device 3, and also obtains the alarm detected by the computer 6 from the monitoring transmission device 7, and aggregates and displays it as an alarm for the power generation unit 1. We are trying to make it more compact.

The correction operation CRT 41 displays the status of the meters or switches on the operation panel 2 when the operator does not operate them, and as a result, the same status as that of the operation panel 2 is monitored via the CRT. Although the display is consolidated, when the operator performs safety operations or correction operations using the controller 5, the display is configured to switch to an operation display that displays the operation status, realizing a more compact panel as a CRT operation. are doing.

The automation CRT 80 aggregates and displays the automatic driving status performed by the computer 6, especially the automatic driving progress operation status display. Further, the operator console 9 consists of a console for dialogue 91 and an automatic driving use exclusion console 90, and the automatic driving use exclusion console 90
are directly connected to the computer 6 as process input/output signals, forming an automatic operation exclusion interlock.

The interactive CRT 81 displays the aspects of the power generation unit processed by the computer 6 in a consolidated manner, and when an operator makes an arbitrary request from the interactive console 91, it displays the results in response to the request.

The basic functions of each CRT have been described above, but
Those CRTs are backed up in the event of a failure.
It is now possible for the operator to switch between basic uses. In other words, in this embodiment, the
The CRT 40 and the CRT 41 for correction operation, and the CRT 80 for automation and the CRT 81 for interaction, each constitute switching selection and backup in case of failure.

Next, the operation transmission device 3 will be explained. The status of instruments, meters, and switches on the operation panel 2 is scanned at high speed on the order of several milliseconds by the operation panel scanning function 30 of the operation transmission device 3, and centrally monitored and controlled by the operation transmission function 31 via the optical transmission line 32. It is received by the panel reception function 33 and sent to the CRT 40 for alarm and CRT for correction operation by the display function 34 of the central monitoring control panel 10.
41 respectively.

Meanwhile, the operator performs safety operations and correction operations using the controller 5.
When operating using a CRT, the signal from the operating device 5 is scanned at high speed by the operating device scanning function 35, and the display function 34 of the central monitoring control panel 10 is used to scan the signal from the operating device 5.
41. Therefore, the operator can manually operate the power generation unit in the same manner as the operation on the operation panel 2, which is one of the important points in this embodiment. In addition, the operating device 5
The signal is sent to the optical transmission line 32 by the controller transmission function 36.
It is transmitted to the receiving function 37 of the operation panel 2 via.
The reception function 37 receives the signal, and the operation panel 2
It is converted by the output conversion function 38 in order to output it to . As a result, the operator's operation on the operating device 5 acts on the power generation unit 1 in the same way as the operation on the operation panel 2 in the individual central operation.

FIG. 3 shows an outline of the operating device 5 in this embodiment. In the figure, the controller 5 includes a safety operation PB5 related to safety operations such as MFT and main turbine trip.
0, an individual operation PB51 for starting and stopping the main auxiliary equipment, turning on and off the main switch, turning off the burner, etc., the security operation PB, and the individual operation PB.
An operation execution PB 52 for requesting reconfirmation on the screen and execution of the operation after operation, and a selector station 54 for performing correction operations for each setting device.
, a selector station selection PB53 for switching between selector stations, and a one-shot type system for selecting a system diagram display that divides the status of the operation panel 2 into each equipment group of boilers, turbines, and generators. A figure selection PB55 is provided.

FIG. 4 shows a processing block diagram of the operating device 5, and details thereof will be explained below. The security operation PB signal S500, which is the signal of the security operation PB50, is the security operation PB.
Scanned by the scanning means 501, the security operation screen display request signal S501 is sent to the central monitoring control panel display function 34 to display the security operation screen data D50, which is fixed graphic data for security operations, and the central monitoring and control panel receiving function. Using the operation panel data D33 received by the CRT 33, a graphic display for security operation is performed on the CRT 41 for correction operation. The operator presses the operation execution PB52 after confirming that the safety operation is executable based on the graphic. The operation execution PB signal S520, which is the signal of the operation execution PB52, is scanned by the operation execution PB operation means 521 and becomes an operation execution request signal S521. The operation execution request signal S521 is the safety operation request signal S521.
502, the security operation output data 502 is obtained, and the security operation output conversion means 5
03, it is converted into a safety operation output signal S503, converted into data for transmission by the operation unit transmission function 36, and used on the operation panel 2 of the individual central operation, and as a result.
Safety operations such as MFT and main turbine trip can be performed using the safety operation PB50 of the operating device 5 of the central monitoring control panel 10.

Next, the operation of the individual operation PB51 will be explained. An individual operation PB signal S510, which is a signal of the individual operation PB51, is scanned by an individual operation PB scanning function 511, and an individual operation screen display request signal S511 and an individual operation request signal S512 are output. The individual operation screen display signal S511 is sent to the centralized monitoring control panel display function 34, and includes individual operation screen data D51, which is fixed graphic data for individual operations, and operation panel data D33 received by the centralized monitoring and control panel receiving function 33. is used to display graphics for individual operations on the CRT 41 for correction operations. After confirming from the graphic that the individual operation is executable, the operator presses the operation execution PB52. The operation execution PB signal is used in the same manner as described above for the security operation, and when the AND condition with the individual operation request signal S512 is satisfied, the individual operation output data 5
12 is converted into an individual operation output signal S513 by the individual operation output conversion means 513, which acts on each switch on the individual operation panel in the same manner as the operation of the safety operation PB, and starts and stops the main auxiliary equipment, and It is possible to perform various operations such as turning on/off switches and turning on/off burners.

Next, the operation of the selector station 54 will be explained. Sector station 54 is computer 6
During automatic operation, the central monitoring control panel reception function 33
The selector station reception signal S543 is converted from the operation panel data D33 received by the selector station reception conversion means 543 into selector station variable data D54, which is used for display. Operator selects selector station PB5
If you press 3, select selector station
A PBS530 signal is generated, and the signal is transmitted by the selector station selection PB scanning means 531 to a selector station screen display request signal S531;
A selector station selection signal S532 and a selector station manual selection signal S533 are output. Selector station screen display request signal S
531 causes the central monitoring control panel display function 34 to display the selector station graphically on the correction operation CRT 41 using selector station screen data D53, which is fixed graphical data of the selector station, and selector station variable data D54. The selector station manual selection signal S533 acts on the selector station reception conversion means 543 to stop updating the selector station variable data. Thereafter, the operation result of the selector station 54 by the operator becomes a selector station operation signal S540, which is converted into a selector station operation setting signal S541 by the selector station scanning means 541, and updates the selector station variable data D54.
The selector station operation conversion means 542 generates a selector station operation output signal S542, which acts on the operation panel 2 of the individual central operation unit in the same manner as the operation of the safety operation PB, and sets fuel flow rate, water supply flow rate setting,
Generator output settings and the like can be performed on the centralized monitoring control panel 10. In the above description, the selector station selection PB 53 is necessary for three to four selector stations 54 to perform CRT operation, and is one element that has made the operation panel more compact.

Next, the operation of the system diagram selection PB55 will be explained. The system diagram display selection PB signal S550 is scanned by the system diagram selection PB scanning means 551, and a system diagram screen display request signal S551 is output. In response to the system diagram screen display request signal S551, the system diagram is displayed on the centralized monitoring control panel display function 34 using system diagram screen data D55 and operation panel data D33, which are fixed data for displaying the system diagram.

The functions of the operation panel 5 and the operation transmission line 3 have been explained above, but let's return to FIG. This section describes the relationship between the peripheral equipment installed in the representative central control center.

The automatic operation of the power generation unit 1 by the computer 6 is as follows:
Normally, man-man control is possible using the centralized monitoring control panel 10 of the representative center operation, but in case an abnormality occurs in the transmission means of the monitoring transmission device 7 and the operation transmission device 3, that is, in case of an emergency, the conventional For the automation of the central monitoring control panel 10 in individual central operations.
CRT 80 and CRT 60 for individual central operation are installed as an alternative to CRT 81 for dialogue, operator console 61 for individual central operation, and typewriter 6 as well.
2nd grade 1st type is also installed. Furthermore, an audio notification device 63 is installed in each central control unit as an effective audio operation status notification system for automatic driving.

In this way, in this embodiment, the operating equipment in the individual central operation is also arranged for backup purposes. However, it goes without saying that this backup is not a necessary condition.

The individual central operation computer 6 is the master station 71 of the dataway 70 that constitutes the monitoring transmission device 7.
After being connected through and photoelectrically converted,
Various signals for monitoring and control are transmitted to the representative central control center using optical transmission at 100 Mbps, and are transmitted to the CRT on the central monitoring control panel 10, the voice notification device 100, and the typewriter 1.
01 to display or output information. Furthermore, the signal from the console 9 is also connected via the remote station 72 of the dataway 70, and after being photoelectrically converted, the information is transmitted to the computer 6 via a 100 Mbps optical transmission line, and information is exchanged with the operator. It's starting to become easier.

Remote station 72 of dataway 70
As shown in FIG. 5 in detail, it has a maximum of four ports, and how to use them is as shown in FIG. ,CRT
It is divided into a port 72b for peripheral devices such as and TW, and a voice notification device port 72c, and in particular, a port for monitoring connected to the port 72b for peripheral devices.
As mentioned above, the CRT 8 can be used as a peripheral device for the computer 6 of the power generation unit as required by switching the CRT 8 for monitoring the adjacent power generation unit when the power generation unit starts or stops or when an abnormality occurs. , which solves the above-mentioned constraints on the amount of information at the time of startup/stop and the time of occurrence of an abnormality, and this is also one of the important points of this embodiment. That is, in Fig. 5, each CRT is installed symmetrically with the adjacent unit, and both units are
During constant load operation, consideration has been given to allowing even one operator to temporarily monitor the unit. In such an arrangement of CRTs, when an adjacent unit stops starting or an abnormality occurs in an adjacent unit, the computer 6 sends the automation CRT 8 for two units.
0 and the dialog CRT 81 are switched and connected, and the dialog console 91 can be used to monitor twice the amount of information normally used. As a result, in this embodiment, not only can the operation panel be made compact, but also operation can be performed in cooperation with adjacent units more efficiently than before, making operation by a small number of people easier.

In the above embodiment, an example was explained in which the present invention was applied to one existing power plant having eight power generation units, but the present invention can be applied to multiple power plants, regardless of whether they are existing or new. Nor. Furthermore, it goes without saying that the display device for displaying information is not limited to CRT, but may also be a display device such as a liquid crystal display.

[Effects of the Invention] According to the present invention, a high control speed can be achieved without requiring a computer for automatic driving in the upper level.

Furthermore, since the operating side can perform operations on the operation panel for each power generation unit without using an automatic operation computer, reliability can be improved against manual operation intervention.

Furthermore, on the monitoring side, the transmission device common to multiple power generation units can be used to switch the monitoring display between power generation units, so a small number of monitoring displays can be used to easily detect large amounts of power when starting, stopping, or abnormalities occur. Enough information can be provided to operators.

Therefore, according to the present invention, a plurality of power generation units can be centrally monitored and controlled by a small number of people in one representative central operation, and efficient operation with good coordination among the power generation units is possible.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a centralized monitoring and control device according to an embodiment of the present invention, FIG. 2 is a detailed configuration diagram of FIG. 1, FIG. 3 is a configuration diagram of the operating device of FIG. 2, and FIG. 4 3 is an operation processing block diagram for explaining the operation of the operating device of FIG. 3, and FIG. 5 is a conceptual diagram for explaining the CRT switching operation of FIG. 2. DESCRIPTION OF SYMBOLS 1... Power generation unit, 2... Operation panel, 3... Operation transmission device, 4... Operation CRT, 5... Controller, 6... Computer, 7... Monitoring transmission device, 8...
...Monitoring CRT, 9...Operator console,
10... Central monitoring control panel, 40... CRT for alarm,
41...CRT for correction operation, 80...For automation
CRT, 81...CRT for dialogue.

Claims (1)

[Scope of Claims] 1. A plurality of power generation units each including a boiler, a turbine, and a generator, and a power generation unit provided for each of the plurality of power generation units to individually monitor and control the operation of these power generation units. an operation panel for manually operating the power generation units; and a computer for automatically operating the corresponding power generation units; and a computer installed in the centralized monitoring and control panel for centrally operating and controlling the plurality of power generation units in one place; operation displays and operation devices provided correspondingly; monitoring display devices and operator consoles provided at least in the same number as the plurality of power generation units; and the operation panel, the operation display and operation devices provided in the plurality of an operation transmission device that connects each power generation unit to exchange operation information without using a computer that automatically operates the power generation unit; and a computer that automatically operates the power generation unit, the monitoring display, and the operator console. and a monitoring transmission device that is commonly connected to each power generation unit to exchange monitoring and control information for automatically operating each of the power generation units, and the power generation unit is operated using the operation display and the operation device. On the other hand, a power plant centralized power plant characterized in that the required number of monitoring display devices and an operator console are used to obtain necessary monitoring control information, and the monitoring display device is configured to be switchable between the plurality of power generation units. Supervisory control equipment.