JP3297202B2 - Power system monitoring and control equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system monitoring and control device in which an operator monitors and controls electrical equipment and measuring devices installed in a power system via a transmission device.

[0002]

2. Description of the Related Art Substations constituting a power system are provided with equipment such as circuit breakers, disconnectors, and protection devices, and dams and hydroelectric power stations are for measuring water levels, operating dam gates, and starting and stopping generators. Of various facilities are installed. The power system monitoring and control device is a device that constantly monitors the state of these various facilities and outputs an alarm as an alarm if there is an abnormality, and performs remote control of a switch or the like according to a predetermined procedure.

In this power system monitoring and control device, the range of performing monitoring and control has been widened due to the development of centralized monitoring and control technology, and operators handle an enormous amount of information on a daily basis. When monitoring and controlling the power system in such a situation, the power system monitoring and control device provides information to the operator in response to an operator's request or automatically or controls various facilities. I have.

[0004] The above-mentioned prior art will be described in detail with reference to FIGS. FIG. 11 is a schematic configuration diagram of a connected water system. In the figure, 50, 60, 70 are dams, 51, 61, 71 are discharge gates, 52, 62, 72.
Is a water turbine generator, and 53, 63, and 73 are the amounts of water flowing into the water system other than the discharge amount of the upstream dam (hereinafter referred to as residual flow amount).

FIG. 12 is a block diagram of a power system monitoring and control device for centrally monitoring and controlling the generator of the dam type hydroelectric power plant shown in FIG. 11, wherein 1 is a man-machine interface device and 11 is a man-machine interface device. A display device, 12 is an input device such as a keyboard or a pointing device (meaning a light pen, a tablet, or the like), 2 is a computer, 3 is a transmission device master station, 4 is a transmission device slave station, and 5 is the one shown in FIG. It shows the power system equipment such as the generator of a dam type hydroelectric power plant.

The operator uses the input device 12 to set control values for the power system equipment, such as the gate opening of the dam and the output value of the generator. The state of the power system equipment 5 is monitored using the display device 11. The electronic computer 2 creates a command value based on the control value set by the operator, and controls the power system equipment 5 via the transmission devices 3 and 4.
Further, the status information of the power system equipment 5 transmitted via the transmission devices 3 and 4 and the values set by the operator are edited and displayed on the display device 11.

FIG. 13 is a block diagram showing the contents of processing performed by the computer 2 of FIG. 12. When an operator sets a scheduled generator output value, the control for the set value is performed by the transmission devices 3 and 4. FIG. 6 is a diagram showing a flow of performing the process on the data and displaying the data transmitted from the transmission devices 3 and 4 on the man-machine interface device. Where 21
Is a generator output scheduled value (hereinafter, referred to as scheduled value) input means, 22 is a generator start / stop, a generator output value (hereinafter, referred to as a generator output value).
A command value output means;
Means for creating a predicted water level value (hereinafter referred to as a predicted value); 25, a means for displaying a predicted value; 26, a command value input means for manually controlling a generator; 27, a dam such as a water level value; (Hereinafter referred to as an aqueous system state) monitoring means, 28 is an aqueous state display means, 201 is a planned value storage area, 202 is an aqueous characteristic data storage area described later, 203 is a predicted value storage area,
Reference numeral 04 denotes an aqueous state storage area.

The scheduled value set by the operator via the input device 12 is taken into the computer 2 by the scheduled value input means 21 and stored in the scheduled value storage area 201. The command value creating means 22 creates a command value based on the scheduled value stored in the scheduled value storage area 201, and the command value is controlled by the command value output means 23 through the transmission devices 3 and 4. Also,
The predicted value stored in the planned value storage area 201 is used together with the water system characteristic data stored in the water system characteristic data storage area 202 and the current state data stored in the water system state storage area 204 by the predicted value creation means 24 in the future water system. It is used to create a predicted value of the state, and the created predicted value is stored in the predicted value storage area 203. The predicted value stored in the predicted value storage area 203 is displayed on the display device 11 by the predicted value display means 25.
Will be displayed. Further, the command value directly set by the operator from the input device 12 is taken into the computer 2 using the command value input means 26, and the control is performed by the command value output means 23 through the transmission devices 3 and 4. The data transmitted from the transmission devices 3 and 4 is taken in by the aqueous state monitoring means 27, stored in the aqueous state storage area 204, and displayed on the display device 11 by the aqueous state display means 28.

FIG. 2 shows an example of the configuration of the scheduled value storage area 201 shown in FIG. 13, in which the output value of each power plant and the scheduled value of the remaining flow rate of each dam are stored every 5 minutes in one day from 0:00 to 24:00. I remember the minutes.

FIG. 3 shows the water-based characteristic data storage area 2 of FIG.
02 is an example of the configuration, the water level water storage HV characteristics for each dam, the output water usage PQ characteristics for each generator, the characteristics of the flow time between dams and power plants, and the maximum and minimum outputs for each generator. It stores values and the like.

FIG. 4 shows an example of the configuration of the predicted value storage area 203 shown in FIG. 13, in which the predicted value of the water level for each dam is stored for every day from 0:00 to 24:00 in 5-minute units.

FIG. 5 is an example of a flowchart specifically showing the predicted value creating means 24 of FIG.
Shows how to create a predicted value of the water level. That is, in step S1, the start time (t) for creating the dam water level prediction value is set.

In step S2, the gate 51 of the dam 50
The gate opening [A1 (t-a1)] a1 minute before, the generator output [P1 (t-b1)] b1 minute before the generator 52, and the gate opening a2 minutes before the gate 61 of the dam 60. [A2 (t
-A2)], the generator output [P2
(T−b2)], the current remaining flow 73 flowing into the dam 70
[Z3 (t)], the current gate opening of the gate 71 [A3
(T)], the current generator output of the generator 72 [P3
(T)] is taken out of the data stored in the aqueous state storage area 204. Then, the gate opening and the generator output are further converted into the gate discharge flow rate and the power generation use water amount based on the following equation. The discharge flow rate V1g (t) from the gate 51 of the dam 50 at the time t is represented by the function f stored in the water-based characteristic data storage area 202 as follows. V1g (t) = f [H1 (t), A1 (t)] where f (t): discharge function characteristic of gate 51 H1 (t): water level of dam 50 at time t A1 (t): time t Of the gate 51 of the dam 50 at

Similarly, the power consumption V1p of the generator 52
(T) is: V1p (t) = g [H1 (t), P1 (t)] where g (t) is a characteristic function of the amount of water used by the generator 52 P1 (t) is the power generation of the generator 52 at time t Similarly, the discharge amount V2g (t) from the gate 61, the amount of water used V2p (t) from the generator 62, the amount of discharge V3g (t) from the gate 71, and the amount V3p (t) of the generator 72 )
Is determined.

In step S3, the next (after Δt) water storage amount of the dam 70 is calculated based on the following equation based on the current water storage amount of the dam 70 and the value obtained in step S2. V3 (t + Δt) = V3 (t) + [V1g (t-a1) + V1p (t-b1)
+ V2g (t-a2) + V2p (t-b2) -V3g (t)-
V3p (t) + Z3] × Δt, where V3 (t): the amount of water stored in the dam 70 at the time t Z3: the remaining flow rate of the dam 70 a1, b1: the flow time from the dam 50 to 70 a2, b2: the dam 60 to 70 Flow time (a is the flow time of the discharged water, b is the flow time of the generated water) Δt: elapsed time

In step S4, the next water storage amount obtained in step S3 is converted into a water level based on the following equation. H3 (t + Δt) = h [V3 (t + Δt)] where h (t) is a water level characteristic function of the dam 70

In step S5, it is determined whether or not the next time exceeds 24:00. If not, the next time is set to t in step S6, and the same calculation is repeated again from step S2. By repeating such calculations sequentially from the upstream until 24 o'clock, it is possible to predict all the dam water levels based on the data set in the scheduled value storage area 201.

To summarize the above, the operator can control the generator by the following two methods (1) and (2). That is, (1) a method of automatically controlling a generator based on data set using the scheduled value input means 21. (2) A method of performing direct control without setting a scheduled value using the command value input means 26.

In the case of the above method (1), by using the following three means, the operator can perform automatic control by a computer while constantly monitoring the predicted value of the future water system state. . First, the operator sets a scheduled value of the generator output and a scheduled value of the remaining flow rate using the input device 12. Second
Then, a predicted value of the dam water level is generated by a computer by using the predicted value generating means 24 based on the set value. Third, the predicted value is displayed on the display device 11 using the predicted value display means 25, and the operator confirms it.

In the case of the above method (2), every time the operator needs to change the control while estimating the water system state based on experience or the like, it is necessary for the operator to perform manual control.

[0021]

However, the above (1)
In the methods (2) and (2), since the predicted value creation means 24 and the command value input means 26 are independent, if the operator sets a command value and performs control different from the planned value, the future water system state Is different from the predicted value created by the predicted value creating means 24, and when the operator sets a command value and performs control, the future water system state is calculated based on experience, intuition, and manual calculation based on the current water system state. It was necessary to perform control while predicting. For this reason, when the generators of a plurality of power plants are controlled using the command value input means 26, the burden on the operator is further increased, and in some cases, erroneous determinations may be made. In some cases, there was a possibility that valuable water resources were wasted or that the operation of the water system was seriously affected.

The present invention has been made in view of the above circumstances, and has as its object that, when an operator performs control different from a scheduled value, the operator uses experience, intuition, and manual calculation based on the current water system state. Performing control while predicting future operating conditions is to eliminate tasks that are extremely burdensome for operators, reduce the time required for prediction, improve accuracy, and eliminate erroneous judgments about future water system conditions. When the operator issues a command, the system automatically predicts the future water system state and displays it to predict the future water system state for generator control, and the operator to operate the water system rationally. It is an object of the present invention to provide a power system monitoring and control device which reduces the burden on the power system.

[0023]

In order to achieve the above object, a first aspect of the present invention is to set a water level and discharge of a dam, an operating state of a generator of a hydroelectric power plant, and a generator output value. Setting means, first control means for controlling the operating state of the generator and the generator output, storage means for setting and storing the operating state of the generator and a scheduled value of the generator output, and Second control means for automatically controlling the operating state and the generator output; first predicting means for predicting the future water system state in accordance with the predetermined value and the characteristic data of the generator and the water system; When manually controlling a start / stop command different from the stored scheduled value in the power system monitoring and control apparatus having the third control means for controlling the water system state, the future water system state is recalculated and predicted according to the control value. Second prediction means and its prediction Characterized by comprising a display means for displaying the contents on the man-machine interface device.

According to a second aspect of the present invention, in the power system monitoring and controlling apparatus according to the first aspect, when the control is performed by a numerical command value of the generator output different from the set scheduled value, the control is performed by the numerical command value. And a third predicting means for recalculating and predicting a future water system state in the case where the operation is continued.

According to a third aspect of the present invention, in the power system monitoring and control apparatus according to the first aspect, when a command different from the set scheduled value is manually controlled, a future scheduled command is issued by the man-machine interface device. By setting the value and the scheduled command time, the future water system state when the current manual control value continues until the next scheduled command time set, and from the next scheduled command time, control based on the set scheduled value And a fourth predicting means for recalculating and predicting.

According to a fourth aspect of the present invention, in the power system monitoring and controlling apparatus according to the first aspect, when the generator is stopped due to an accident or the like, unlike the predetermined value, the generator output is set to 0 and the future water system is controlled. A fifth prediction means for recalculating and predicting the state is provided.

According to a fifth aspect of the present invention, in the power system monitoring and control apparatus according to the first aspect, when the control is performed by a command different from the predetermined value, the generator output is set to 0 and the generator output is set to a maximum. A sixth predicting means for recalculating and predicting a future water system state when output is provided is provided.

[0028]

According to the present invention, when the operator performs control different from the expected value, the predicted value recalculating means is activated. In this predicted value recalculation means, using the command value set by the operator, the water system characteristic data and the current state data,
Predict future water system conditions, recalculate new predictions and save. Display this saved prediction. If the generator stops due to an accident, the change of the water system state based on the accident stop is displayed. Furthermore, if the operator performs control different from the scheduled value, the range of water system changes such as water level change when water overflows the earliest after control and water level change when water is used up earliest is determined. indicate. Such a display allows the operator to know the future water system state. For this reason, based on the current water system state, the operator is expected to predict the future water system state by experience, intuition, and manual calculation based on the current water system state. This saves time, improves accuracy and eliminates erroneous decisions about future water system conditions.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a power system monitoring and control device according to an embodiment of the present invention (corresponding to claim 1). This embodiment differs from the conventional example of FIG.
13 is provided, and the same parts as those in FIG. 13 are denoted by the same reference numerals and description thereof will be omitted.

The predicted value recalculating means 29 of the present embodiment is activated from the command value input means 26 when the operator sets a command value different from the planned value stored in the planned value storage area 201 from the input means 12. Then, the predicted value is recalculated, and the predicted value recalculation is stored in the predicted value storage area 203.

Next, the operation of this embodiment will be described with reference to FIGS. 1 to 6 and FIG. The generator output and the remaining flow rate are set in the scheduled value storage area 201 using the scheduled value input means 21 from the input device 12. Based on this data, a command value for the generator is automatically created by the command value creating means 22,
Control is performed using the command value output means 23. At the same time, the predicted water level predicts the water level of each dam as follows and displays it on the display device. That is, a predicted value of the water level is created using the predicted value creating means 24 based on the scheduled value data stored in the scheduled value storage area 201 and the water system characteristic data stored in the water system characteristic data storage area 202, and the predicted value storage is performed. Stored in area 203,
This data is displayed on the display device 11 using the predicted value display means 25.
To be displayed.

At this time, when a start command of the generator different from the scheduled value is set using the input device 12, a start command of the generator different from the scheduled value is input via the command value input means 26.
The control is performed from the command value output means 23, and there is a possibility that the state differs from the predicted value stored in the predicted value storage area 203 in advance. However, the predicted value recalculation is performed by activating the predicted value recalculation means 29 before the command value input means 26 activates the command value output means 23 to perform control.

FIG. 6 is a flowchart specifically showing the processing of the predicted value recalculating means 29 in FIG. 1. The predicted value of the water system state when the control of the start / stop command different from the expected value is performed is recalculated. The method is shown.

In the flowchart of FIG. 6, in step S1, it is determined whether a command different from the expected value is a generator start command. If this command is a start command, the process proceeds to step S2, where the generator output is determined. The planned value is replaced with the lowest output extracted from the water-based characteristic data storage area 202. If it is not a start command in step S1, the process proceeds to step S3, and it is determined whether or not the command is a stop command. If the command is a stop command, the process proceeds to step S4 to replace all the planned values of the generator output with zero. (If there is a different start command from the schedule, a pattern is created on the assumption that the generator output in the future will be the minimum output of the generator from that point on, and there will be a stop command different from the schedule. If
(Create a pattern assuming that the future generator output is 0 from that point in time.) After step S2 or step S4 is completed, proceed to step S5 to recalculate the water system state. If the stop command is not issued in step S3, and after the end of step S5, the present water system state recalculating means ends. Note that the specific contents of step S5 are the same as those of the predicted value creating means 24 shown in FIG.

In the present embodiment, since the present command is the start command in the determination of step S1, the process proceeds to step S2, where the planned output value of the generator is replaced with the minimum output extracted from the water-based characteristic data storage area 202, and step S5 Recalculate the water system state with. The calculation in step S5 is the same as that in the flowchart shown in FIG. 5, and a description thereof will be omitted.

The new predicted value is stored in the predicted value storage area 203.
Is stored. As a result, the operator displays the predicted value display means 25.
Through the above, a predicted value based on the latest command value displayed on the display device 11 can be known in advance. Similarly,
Even when a generator stop command different from the planned value is set, the planned value of the generator output is replaced with 0 in step S4, the water system state is recalculated in step S5, and the result is displayed on the display device 11. You.

As described above, when the operator controls the start / stop command different from the expected value, the start / stop command is controlled.
Since the change in the water system state after the control of the stop command is known, the operator predicts the future operation state by experience, intuition, and manual calculation based on the surrounding water system state as in the past. Work that is very burdensome for the user becomes unnecessary. Further, the time required for the prediction can be reduced, the accuracy can be improved, and erroneous judgments on future water system conditions can be eliminated.

(Another Embodiment 1) FIG. 7 is a flowchart of a water-based state recalculation process according to another embodiment 1 (corresponding to claim 2) of the present invention. In this embodiment, the contents of the predicted value recalculating means 29 of the above embodiment shown in FIGS. 1 and 6 are changed.
It is a flowchart showing a case where recalculation is performed when a generator output is changed instead of a generator start or stop command, that is, when a numerical command value is set.

Next, the aqueous state treatment method of this embodiment is shown in FIG.
And the flowchart of FIG. In the flowcharts of FIGS. 1 and 7, a numerical value command of the generator output different from the expected value from the input device
When the setting is made from 6, the predicted value recalculation means 29 is activated and recalculation is executed. That is, it is determined in step S1 whether the command value is a numerical command. If the command value is a numerical command, all the planned values of the generator output are replaced with numerical command values in step S2. Perform calculations. The calculation in step S3 is the same as that in the flowchart shown in FIG. 5, and a description thereof will be omitted. Step S4
Then, the operator determines the result of recalculation of the predicted water level based on the set numerical command value, and in the case of a failure, proceeds to step S5, determines whether or not to perform resetting, and performs resetting. In this case, resetting is performed in step S6, and the process is repeated from step S2. If the resetting is not performed in step S5, the process ends. If the water system state is normal in step S4, control based on the numerical command value is performed in step S7, and the process ends. If it is not a numerical command in step S1, the process ends. The predicted value recalculated in step S3 is stored in the predicted value storage area 203, and the operator can know in advance the predicted value based on the command value displayed on the display device 11 through the predicted value display means 25. .
The operator can determine whether it is normal or defective by looking at the water system state. As a result, the operator can perform processing based on the determination result from the input device 12.

As described above, according to the present embodiment,
If the operator issues a numerical command for the generator output that is different from the expected value, the change in the water system state after issuing the numerical command is known. In addition, there is no need to predict the future operation state based on experience, intuition, or manual calculation, which is a very heavy burden for the operator. It also reduces the time required for forecasting, improves accuracy,
And erroneous judgments on future water system conditions can be eliminated.

(Embodiment 2) FIG. 8 is a flow chart of a water system state recalculation process according to another embodiment 2 (corresponding to claim 3) of the present invention. In this embodiment, the contents of the predicted value recalculating means 29 of the embodiment shown in FIGS. 1 and 6 are changed, and when the command value for the generator is set, the future scheduled command value and the command time are also set at the same time. 4 is a flowchart showing a case where recalculation is performed to create a predicted value of the water system state.

Next, the water-based state treatment method of this embodiment is shown in FIG.
And the flowchart of FIG. In the flowcharts of FIGS. 1 and 8, a numerical command for a generator output different from a predetermined value is input from the input
When the setting is made from 6, the predicted value recalculation means 29 is activated and recalculation is executed. That is, in step S1, it is determined whether or not the command is for the generator. If the command is for the generator, the process proceeds to step S2, and it is determined whether or not a future scheduled command value and a command time are set. . If it is set, the process proceeds to step S3. In step S3, from the present to the scheduled command time, the current command value is 0 if the stop command is a stop command, the minimum output is a start command, and the command output value is continued if a current command is a numerical command. After the time, the scheduled command value is replaced so as to become the predicted command value. Step S4
Let's recalculate the future water system state. The calculation in step S4 is the same as that in the flowchart shown in FIG. 5, and a description thereof will be omitted. If the future scheduled command value and command time are not set in step S2, steps S3 and S4 are skipped and step S5 is executed. In step S5, the set result is determined.
Then, it is determined whether or not to perform the resetting. If the resetting is to be performed, the resetting is performed in step S7, and the process proceeds to step S2.
Iterate from. If the resetting is not performed in step S6, the process ends. If the water system state is normal in step S5, control based on the command value is performed in step S8, and the process ends. If it is not a numerical command, a start command, or a stop command in step S1, the process ends. The predicted value recalculated in step S4 is stored in the predicted value storage area 203, and the operator displays the predicted value based on the newly set command value because it is displayed on the display device 11 through the predicted value display means 25. You can know in advance. The operator sees this water system condition,
It can be determined whether it is normal or defective. As a result,
The operator performs processing based on the determination result from the input device 12.

As described above, according to the present embodiment,
If the operator performs control different from the scheduled value, since the water system state after performing the control and the future planned command value set at the time of command output can be known based on the scheduled time,
This eliminates the need for the operator to predict the future operating state based on the surrounding water system state based on experience, intuition, and manual calculation, which is very burdensome for the operator. In addition, it is possible to shorten the time required for prediction, improve the accuracy, and eliminate erroneous judgments on future water system conditions.

(Embodiment 3) FIG. 9 is a flowchart of a water-based state recalculation process according to another embodiment 3 (corresponding to claim 4) of the present invention. In the present embodiment, the contents of the predicted value recalculating means 29 of the embodiment shown in FIGS. 1 and 6 are changed, and a flowchart in the case of recalculating when the information of the power generation stop due to the accident is notified is shown. Things.

Next, the aqueous system treatment method of this embodiment is shown in FIG.
And the flowchart of FIG. In the flow charts of FIGS.
When the information of the generator stoppage is notified by an accident, the predicted value recalculating means 29 is started, and the recalculation is executed. That is, it is determined in step S1 whether or not the notification indicates that the generator has stopped due to an accident.
Replaces all the expected values of the generator output with 0,
In step 3, the future water system state is recalculated. The calculation in step S3 is the same as the flowchart shown in FIG. If the notification in step S1 does not indicate that the generator has stopped due to an accident, the process ends. The predicted value calculated in step S3 is stored in the predicted value storage area 203, and the operator can immediately know the predicted value based on the accident stop displayed on the display device 11 through the predicted value display means 25.

As described above, according to this embodiment,
When the generator stops due to an accident, the change in the water system state based on the accident stop can be known, so the operator predicts the future operation state by experience, intuition, and manual calculation based on the surrounding water system state. Extremely burdensome work is not required. It also reduces the time required for forecasting, improves accuracy,
In addition, it is possible to eliminate erroneous judgments on future water system conditions.

(Embodiment 4) FIG. 10 is a flowchart of a water-based state recalculation process according to another embodiment 4 (corresponding to claim 5) of the present invention. In this embodiment, the contents of the predicted value recalculating means 29 of the embodiment shown in FIGS. 1 and 6 are changed, and the recalculation is performed when a generator start / stop command or a numerical command is set. It shows a flowchart.

Next, the water-based state treatment method of this embodiment is shown in FIG.
And the flowchart of FIG. In the flowcharts of FIGS. 1 and 10, when a start / stop command or a numerical command of the generator different from the expected value is set from the input device 12 through the command value input unit 26, the predicted value recalculation unit 29 is started, A recalculation is performed. That is, in step S1, the scheduled value of the generator output is set to 0, and in step S2, the future water system state is recalculated. Further, in step S3, the planned value of the generator output is set to the maximum value, and in step S4, the future water system state is recalculated. However, the calculations in steps S2 and S4 are the same as in the flowchart shown in FIG. The predicted values recalculated in steps S2 and S4 are stored in the predicted value storage area 203, displayed on the display device 11 through the predicted value display means 25,
The operator can know in advance the range in which the water system state changes.

As described above, according to this embodiment,
Assuming that the operator performs control different from the expected value, the range of changes in the water system state, such as the water level change when the water overflows the earliest after the control or the water level change when the water is used up the earliest, can be understood. Therefore, it is an assistance for the operation that is very burdensome for the operator, that is, the operator predicts the future operation state by experience, intuition, and manual calculation based on the surrounding water system state. Further, it is possible to shorten the time required for the prediction, improve the accuracy, and eliminate erroneous judgments on the future water system state.

[0050]

As described above, by using the present invention, if the operator performs control different from the expected value, the operator can obtain experience, intuition,
This eliminates the need for an operation that is very burdensome for the operator, that is, predicting a future operation state by manual calculation. Also,
It is possible to shorten the time required for the prediction, improve the accuracy, and eliminate erroneous judgments on the future water system state. As a result, it is possible to save water resources and operate the water system rationally.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a configuration diagram of data stored in a scheduled value storage area.

FIG. 3 is a configuration diagram of data stored in an aqueous characteristic data storage area.

FIG. 4 is a configuration diagram of data stored in a predicted value storage area.

FIG. 5 is a flowchart of a predicted value creating unit of FIGS. 1 and 13;

FIG. 6 is a flowchart showing a calculation procedure of a predicted value recalculation means in FIG. 1;

FIG. 7 is a flowchart showing a calculation procedure of predicted value recalculation means according to another embodiment 1 of the present invention.

FIG. 8 is a flowchart illustrating a calculation procedure of predicted value recalculation means according to another embodiment 2 of the present invention.

FIG. 9 is a flowchart showing a calculation procedure of predicted value recalculation means according to another embodiment 3 of the present invention.

FIG. 10 is a flowchart illustrating a calculation procedure of predicted value recalculation means according to another embodiment 4 of the present invention.

FIG. 11 is a schematic configuration diagram of a connected water system.

FIG. 12 is a system diagram of a power system monitoring and control device.

FIG. 13 is a block diagram for explaining processing of the power system monitoring and control device of FIG. 12;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Man-machine interface device, 2 ... Electronic computer, 3 ... Transmission device (parent-facing device), 4 ... Transmission device (slave-facing device), 5 ... Power system equipment, 11 ... Display device, 1
2 input device, 21 planned value input means, 22 command value creation means, 23 command value output means, 24 predicted value creation means, 25 predicted value display means, 26 command value input means, 2
7 ... water system state monitoring means, 28 ... water system state display means, 29
... Prediction value recalculation means 201 201 Planned value storage area 202
... water-based characteristic data storage area, 203 ... predicted value storage area,
204: current state storage area, 10n: dam n (n = 1 to 1)
3), 11n ... discharge gate n (n = 1 to 3), 12n ...
Hydroelectric generators n (n = 1 to 3), 13n ... Remaining flow rates flowing into dam n (n = 1 to 3).

Continuation of the front page (56) References JP-A-61-98128 (JP, A) JP-A-2-99778 (JP, A) JP-A-60-122405 (JP, A) JP-A-58-49044 (JP, A) , A) JP 2-10660 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02J 3/00-5/00 H02J 13/00-13/00 311 G05B 17 / 02 G05B 23/02

Claims (5)

(57) [Claims] 1. A setting means for setting a water level and discharge rate of a dam, a generator operation state of a hydroelectric power plant, and a generator output value, and a first control means for controlling the generator operation state and the generator output value. Storage means for setting and storing the operating state of the generator and the scheduled value of the generator output; second control means for automatically controlling the operating state of the generator and the generator output in accordance with the scheduled value; In the power system monitoring and control device having first prediction means for predicting a future water system state and third control means for manually controlling the generator according to the values and the characteristic data of the generator and the water system, When manually controlling a start / stop command different from the scheduled value, second predicting means for recalculating and predicting a future water system state according to the control value, and display means for displaying the predicted content on a man-machine interface device. Equipped A power system monitoring and control device, characterized in that: 2. The power system monitoring and control device according to claim 1, wherein when the control is performed with a numerical command value of the generator output different from the set scheduled value, the future when the control is continued with the numerical command value. A third predicting means for recalculating and predicting the water system state of the power system. 3. The power system monitoring and control device according to claim 1, wherein when a command different from the set scheduled value is manually controlled, a future scheduled command value and a scheduled command time are set by the man-machine interface device. By setting, the current manual control value continues until the set next scheduled command time, and from the next scheduled command time, the future water system state when controlling based on the set scheduled value is recalculated and predicted A power system monitoring and control device comprising a fourth predicting means. 4. The power system monitoring and control device according to claim 1, wherein when the generator is stopped due to an accident or the like different from the predetermined value, the generator output is set to 0 and the future water system state is recalculated and predicted. An electric power system monitoring and control device, comprising: 5. The power system monitoring and control device according to claim 1, wherein the control is performed by a command different from the predetermined value.
A power system monitoring and control device comprising: sixth prediction means for recalculating and predicting a future water system state when the generator output is set to 0 and when the generator output is set to the maximum output.