JPH02285289A - Plant control operation panel - Google Patents

Abstract

PURPOSE:To allow the panel to prevent a human error by arranging a sub- controller at the lower position of a main controller arranged in a panel face while attaching displays for displaying suitability of each input signal and each output signal of the main controller and the subcontroller to each controller. CONSTITUTION:Plays 16a, 16b, 17a,...20b provided in the input and output sides of each controllers 6, 7a, 7b, 8a, 8b, for instance, consist of light emitting diodes. The display 16a is allowed to compare with a plurality of signals taken in as a reactor water level signal, their deviations are in a constant range and it is judged that the input signal is correct to light if they are in the usual range. In addition, it is judged to be corrected in the condition that the suitability of an output signal allows the level of its output signal to be in the usual range and be in the direction of allowing the level thereof to reduce the deviation of the controller 6. Furthermore, it is judged to be correct when display lights 17a, 18...20b allow their output levels to be in an usual range and the panel is constituted so that they are lighted.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an operation panel for plant control, and in particular to an operation panel for plant control.
The present invention relates to a plant control operation panel that can accurately display the operating status of equipment to operators and prevent erroneous operation and misdiagnosis.

(Prior Art) Nuclear power plants and chemical plants are composed of many equipment systems, and are operated by organically operating a huge number of equipment. Control operations for each system are mostly centralized t++
It is being carried out in room m.

For this reason, the central control room is equipped with an operation panel that integrates meters, switches, and regulators that display operating status quantities for each system.

An example of the configuration of a conventional plant control operation panel will be described below, taking as an example a water supply system installed in a nuclear power plant and its operation panel.

The water supply system of a nuclear power plant and its operation panel are generally constructed as shown in FIGS. 2 and 3, respectively.

In other words, the water supply system of a nuclear power plant includes three condensate pumps 1a, lb, and 1c that transfer condensate water compressed in a condenser (not shown), and condensate pumps 1a, 1b, and Ic.
It is composed of four reactor supply pumps 3 that pressurize condensate transferred from the reactor pressure vessel 2 and supply it to the reactor pressure vessel 2.

The reactor supply pump 3 further includes two turbine-driven water supply pumps 3a whose power sources are water supply turbines driven by steam generated in the reactor pressure vessel 2.

3b, and two motor-driven water supply pumps 3c and 3d each using an electric motor as a power source.

On-off valves 4a and 4b are provided on the secondary sides of the turbine-driven water supply pumps 3a and 3b, respectively, and regulating valves 5a and 5b are provided on the secondary sides of the motor-driven water supply pumps 3c and 3d, respectively.

In addition, a reactor main water level controller 6 is provided which adjusts the flow rate of each water supply pump 3a to 3d to control the water level, and the control signal from the reactor main water level vItllll controller 6 is controlled by the water supply amount 61, respectively.
Turbine-driven water supply pump 3a, via ti7a, 7b;
3b, and also the water supply υ controller 8a,
A regulating valve 5a is disposed on the secondary side of the motor-driven water supply pumps 3c and 3d via the valve 8b.

5b.

Further, the reactor pressure vessel 2 is provided with a reactor secondary recirculation system 9 that circulates the feed water supplied into the vessel and controls the reactor output, and a water level measuring device 10 that measures the water level of the reactor. Ru.

The capacity of one turbine-driven water supply pump 3a, 3b covers 50% of the amount of water supplied during rated power operation of the reactor, and the capacity of one turbine-driven water supply pump 3a, 3b covers 50% of the water supply amount during rated power operation of the reactor, and the capacity of each turbine-driven water supply pump 3a, 3b covers 50% of the water supply amount during rated power operation of the reactor. The water supply amount is adjusted by changing the rotational speed of the water supply turbine in response to a control signal from the water supply turbine.

On the other hand, each motor-driven water supply pump 3c, 3d has a water supply capacity of 25% of the rated operation, and has a water supply capacity of υ1611.
In response to control signals from the pumps 8a and 8b, the opening degrees of the regulating valves 5a and 5b disposed on the secondary side of the pump are changed to adjust the water supply amount. These four water supply pumps 3a
Although the pumps 3d to 3d are used depending on changes in the reactor output, etc., two turbine-driven water pumps 3a and 3b are normally operated during rated reactor operation.

The operation panel of the conventional water supply system as described above is generally constructed as shown in FIG.

That is, the operation panel 11 displays the reactor main water level controller 6 and the water supply flow rate of each water supply pump 38 to 3d as tI+1611.
4 water supply 111J m units 7a, 7b, 8a, 8b
and are provided. The reactor main water level controller 6 has self-vJ
(^UTO) mode and manual (HAM) mode selector switch 12 and manual cylinder regulator 1 that changes the output signal
3 is provided, and in the automatic position, the lower water supply control units 7a, 7b, 8a, 8blC output signals are sent in the direction to eliminate the deviation between the reactor water set value and the actual water level, and each water supply Adjust the amount of water supplied by the pumps 3a to 3d.

On the other hand, manual position r c, hand 8i, glILS13 (7)
The configuration is such that the output signal can be changed manually by pressing the OPEN button (0) or the CLO8E button (C).

Also, each water supply 1111 controller 7a, 7b, 8a, 8b is provided with an automatic/manual changeover switch 12a, 12b, respectively.

12c, 12d# and hand aWfff! 513a, 13b
.

13c and 13d are provided. Each water supply controller 7a,
7b, 8a, 8b selector switches 128-12 (if f is in the automatic position, each water supply IIJ WJ! 7a,
7b, 8a, and 8b receive the output signal of the reactor main water level control t[136 and send the output signal to each load. The indicated values of the deviation indicators 14a, 14b, 1.4c, and 14d at this time indicate the difference between the manual signal and the automatic output signal.

On the other hand, if it is in the manual position, each output indicator 15a, 15
b, 15c, 15dlC shown tL6, the adjustment signals adjusted by the hand 11111 moderators 13a, 13b, 13c, 13d are directly transmitted to the load.

In this way, the reactor main water level controller 6 and each water supply
R reactor pressure vessel 2 via I reactor 7a, 7b, 8a, 8b
The water level inside! 13111 is executed.

During normal operation, each controller 6, 7a, 7b, 8a, 8M) on the operation panel 11 can be operated with a sufficiently high degree of precision because there is a large time margin.

(Problem to be solved by the invention) However, immediately after a combination of abnormal events occurs, the number of stones per unit time for the operator increases compared to normal times, so the operator does not operate erroneously. This increases the possibility of misjudgment.

For example, as an example of incorrect operation, the water supply l, 1 Jtil unit of the turbine-driven water supply pump and the water supply $1 of the motor-driven water supply pump.
1. There are cases of mistaken selection, such as mistaking it for a sinful vessel. This type of incorrect selection is due to the fact that the water supply controllers are similar in appearance, and it is difficult to tell whether the water supply controller is under control or not just by observing the water supply controller itself. occurs because of

Further, as an example of a misjudgment, when a failure occurs in the water supply controller itself, there is a mistake such as erroneously identifying the malfunctioning water supply control unit. Such a misjudgment can be easily determined by calmly analyzing the instruction information from the built-in output indicator and deviation indicator, but it may become difficult in an emergency.

The present invention has been made in order to solve the above problems, and by adding a function to display the suitability of the control status and operating status of the fI11@ device, human error such as operator error or misjudgment can be prevented. It is an object of the present invention to provide a plant control operation panel that can prevent errors and improve the safety of plant operation.

(Structure of the Invention) (Means for Solving the Problems) In order to achieve the above object, the present invention provides a main and sub WJ device, and a plurality of WJ devices that control each plant component device in response to control signals from the main controller. In a plant control operation panel equipped with an iWJ controller, a sub-controller is arranged below the main controller arranged on the panel surface, and the suitability of each input/output signal of the main controller and sub-controller is checked. The present invention is characterized in that a display device is attached to each control tip device.

(Function) In the plant control operation panel having the above configuration,
n1υItllll below the main controller placed on the panel surface.
Because of the arrangement of the sensors, it is possible for the operator to understand the flow direction of the it, lI, tlO signals at a glance.

In addition, each controller is equipped with a display that shows whether the input/output signals of each controller are appropriate, so automatic manual switching operations for each controller can be performed reliably, and the controller itself can be prevented from malfunctioning. It is possible to quickly detect the problem, prevent human errors such as misjudgment and misoperation by operators, and make it possible to take action in the event of an abnormality with higher precision.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view showing an embodiment of the plant Lll tll operation panel according to the present invention.

Note that the same elements as those in the conventional example shown in FIG. 3 are given the same reference numerals, and redundant explanation thereof will be omitted.

That is, this embodiment is a plant control operation panel attached to a water supply system of a nuclear power plant, and includes a reactor main water level controller 6 as a main υ controller and a control signal from this reactor main water level controller 6. In response, the water supply pumps 3a, 3b,
Water supply controllers 7a and 7b as four rJ1 controllers that control 3c and 3d.

8a, 8, the reactor main water level control ia device 6 disposed on the panel surface.
Water supply control units 7a, 7b, and 8a are provided below.

8b, and indicator lights 16a, 16 as indicators for indicating the suitability of each input/output signal of the reactor main water level controller 6 and water supply control equipment 7a, 7b, 8a, 8M).
b, 17a, 17b, 18a.

18b, 19a, 19b, 20a, 20b for each controller 6
, 7a, 7b, 8a, 8bk-SotLzonn and iJ.

Indicator lights 16a, 16b, 17a, . . . 2 attached to the input/output side of each controller 6.7a, 7b, 8a, 8b
0b is formed of a light emitting diode, for example.

Indicator light 16 attached to the input side of the reactor main water level controller 6
a compares multiple signals taken in as reactor water level signals and determines that the input signal of the main water level controller 6 is correct if the deviation is within a certain range and within the normal setting tolerance range. It makes a judgment and lights up. That is,
This lighting operation is executed according to the flowchart shown in Fig. 1a, and when the water level signal deviation The indicator light lights up.

Further, an indicator light 16b attached to the output side of the reactor main water level controller 6 determines whether the output signal of the reactor main water level controller 6 is appropriate or not, and lights up when the value is normal. The output signal is determined to be normal (suitable) on condition that the level of the output signal is within the normal range and is in the direction of reducing the deviation of the reactor main water level controller 6.

Furthermore, water supply 1. II The indicator lights 178.18a attached to the input sides of the till devices 7a and 7b indicate that the water supply controls B7a and 7b are automatic (AUTO) -E-to 1ct5t
), reactor main water level! /J Lights up when receiving the output signal from the II unit 6. - The indicator lights 17b and 18b attached to the force output side are respectively i, III!
] When the target turbine-driven water supply pumps 3a, 3b are in operation and the level of the output signal from the water supply units 7a, 7b is within the normal range, it is determined to be normal and lights up. .

Also, water supply υ16 for motor-driven water supply pumps 3c and 3d!
Indicator lights 19a, 20a, 19b, and 20b attached to the input and output sides of the L units 8a and 8b, respectively, are similarly constructed.

In the plant control operation panel of this embodiment configured as described above, two turbine-driven water supply pumps 3a, 3
In normal conditions when the reactor is operated at rated output using
6a, 16b and the indicator light 17a on the outflow side of the water supply system 611 and 7a, 7b.

17b, 18a, 18bG; are all turned on.

Meanwhile, an abnormal ¥BR occurred during plant operation, and indicator light 16
If the light a goes out, the reactor main water level tllIItll
The driver can judge by looking at the panel that it is impossible to use the device 6 in automatic (AUTO) mode. The driver can then switch to manual mode and respond quickly.

Furthermore, if the input side indicator light 16a of the reactor main water level controller 6 is on, but the output side indicator light 16b goes out, this indicates that the reactor main water level controller 6 itself has failed. The driver makes a judgment and manually operates the water supply-1111 units 7a and 7b (H
AM) mode.

Indicator light 17 on the input side of the water supply υ1IHI7a, 7b
a, 18a are lit, the water supply controllers 7a, 7
b is the reactor main water level t111 1111 from tll device 6
When the 0 signal is received, it is made clear to the driver that the vehicle is operating in automatic mode.

Therefore, as a result of the water supply fin ItI devices 7a and 7b clearly indicating that it is impossible for the driver to directly control the water level, the driver may assume that it is in manual mode and
, 11611 can be prevented from occurring.

On the other hand, water supply il+11iil vessel 7a, 7b17
) Output 1 (7) a When the indicator lights 17b and 18b go out, it is clearly shown to the driver that the water supply system at the location where the lights go out is unusable.

Therefore, the driver uses the motor-driven water supply pump 3c.

Measures can be taken to supply water by starting an alternative pump such as 3d.

As described above, according to the plant control operation panel according to this embodiment, the reactor main water level & controller 6 and the feed water controllers 7a, 7b, 8a, 8b are arranged along the flow of the υ control signal. , an indicator light 16a indicates the suitability of input/output signals of each controller.
, 16b to 20a, 20b,
Automatic manual switching operations for each controller can be reliably performed.

In addition, it is possible to quickly detect failures in the controller itself, and is extremely effective in supporting operation port recognition, diagnosis, and operational response, especially when an abnormality occurs, and greatly contributes to improving the reliability of plant operation management. It is something to do.

(Effects of the Invention) As explained above, in the plant control operation panel according to the present invention, since the adverb wJ device is placed below the main control a device placed on the panel surface, it, lJ III signal flow is It is possible for the operator to understand the direction at a glance.

In addition, each 11i11 all device is equipped with an indicator that displays the suitability of the input/output signals of each controller.
It is possible to reliably perform automatic and manual switching operations for 11 devices, and to quickly discover failures in the controllers themselves, preventing human errors such as misjudgments and incorrect operations by operators. , it is possible to execute countermeasures with higher precision when an abnormality occurs.

[Brief explanation of drawings]

Fig. 1 is a front view showing an example of the actual flow of the plant control operation panel according to the present invention, Fig. 1a is a flowchart showing the procedure for lighting up indicator lights, and Fig. 2 shows the configuration of the water supply system of a nuclear power plant. The system diagram shown in FIG. 3 is a front view showing a configuration example of a conventional blunt control operation panel. 1a, 1b, 1c...Condensate pump, 2...Reactor pressure vessel, 3...Reactor feed water pump, 3a, 3b...
Turbine-driven water supply pump, 3c, 3d...Motor-driven water supply pump, 4a, 4b...Open valve, 5a, 5b...
・Adjustment valve, 6...Reactor main water level controller, 7a, 7
b. 8a, 8b... Water supply controller, 9... Reactor secondary recirculation system, 10... Water level measuring device, 11.11a... Operation panel, 12, 12a, 12b, 12c, 12d-.・
Changeover switch, 13.13a, 13b, 13C, 13d
...hand vJg1 articulator, 14.14a, 14b, 14
c, 14d--deviation indicator, 15, 15a, 15b. 15, C, 15d--output indicator, 16a, 16b. 17a, 17b, 18a, 18b, 19a, 19b, 2
0a, 20b--indicator light.

Claims (1)

[Claims] In a plant control operation panel equipped with a main controller and multiple sub-controllers that control each plant component device by receiving control signals from the main controller, the sub-controllers located below the main controller placed on the panel surface are 1. An operation panel for controlling a plant, characterized in that a controller is arranged, and a display device is attached to each controller to display the suitability of each input/output signal of the main controller and the sub-controller.