JP2000069672A - Power system stabilizing apparatus and recording medium for storing processing program of the apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power system stabilizing apparatus assuring high control effect by adjusting each output of a control signal calculating means according to priority sequence. SOLUTION: A variable limiting means 12 limits each control signal output from a control signal calculating means 3 to each predetermined limiting range for setting the upper and lower limits, which is set corresponding to each control signal in order to output a limit control signal. A control signal combining means 13 outputs a combining control signal by combining each limit control signal output from the variable limiting means 12. A combined signal limiting means 14 limits the combined control signal output from the control signal combining means 13 to the predetermined range to output the limited combined control signal to a power system device 4. A limit range setting means 15 determines and sets the predetermined limiting range for setting the upper and lower limits of the variable limiting means 12, according to the priority sequence corresponding to each control signal output from the control signal calculating means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system stabilizing device for stably controlling a power system and stably operating the power system, and a recording medium for recording a processing program of the device.

[0002]

2. Description of the Related Art In order to supply power stably in operation of a power system, a power system stabilizing device is installed. The power system stabilizing device has a variable capacitance series capacitor,
Reactive power compensator, phase adjuster, braking resistor, phase adjuster,
There are energy storage devices and the like.

[0003] These power system stabilizing devices perform stability control of power fluctuations caused by changes in the system configuration or failures, power flow control, voltage control, phase control, reactance control, etc., and operate the system stably. In order to be able to do so, it is composed of a plurality of control systems for each control purpose.

FIG. 46 shows a conventional power system stabilizing device.

In the figure, 1 is a power system, 2 is a conventional power system stabilizing device, 3 is control signal calculating means for calculating a control signal according to the control purpose of each control system, 4 is a power system device, Denotes an adder, and 6 denotes a limiter.

In the conventional power system stabilizing device 2, the control signal calculating means 3 detects electrical or mechanical variables of a certain power system and calculates a control signal of the power system equipment 4 from the input signal. Then, after adding a plurality of outputs of the control signal calculating means 3 by the adder 5, the output added by the limiter 6 is limited within a limit value, and the power system equipment 4 is controlled.

FIG. 47 shows a simple example of a conventional power system stabilizing device. The control signal calculating means 3 includes n power fluctuation suppression control signal calculating means 3a and n system voltage constant control signal calculating means. Means 3b are provided, and the angular velocity deviations Δω1 to Δω2 and the n system voltage deviations ΔV1 to ΔVn of the n generators in the power system are input correspondingly. Then, the control signal calculated by each of the power fluctuation suppression control signal calculating means 3a and the system voltage constant control signal calculating means 3b is input to the adder 5a, and the result obtained by the addition is limited by the limiter 6, and the reactive power is limited. One control signal is output to a reactive power compensator (not shown) as a command value.

Accordingly, the control system of the reactive power compensator provided with two control systems for different control purposes, that is, power fluctuation suppression control (damping control) and system voltage constant control, uses a control signal for power fluctuation suppression control. A control signal for system voltage constant control is synthesized, and the reactive power is controlled by the synthesized control signal. Therefore, regardless of the power fluctuation suppression control or the system voltage constant control, what is controlled is reactive power, and the control signals of both are combined and output as a control signal.

[0009]

Conventionally, since a plurality of outputs obtained by the control signal calculating means 3 are added and the added output value is limited by the limiter 6, the added output value is limited to the limit value of the limiter 6. If it is within the range, the stabilization result by each output of the control signal calculation means 3 and each response such as power flow control, voltage control, phase control, and reactance control can be obtained as designed, but the added output value is limited by the limiter 6. When the output exceeds the limit range, the control effect of the control signal calculation means 3 may be lower than the design.

Therefore, the present invention provides a power system stabilizing device having a high control effect by adjusting each output of a control signal calculating means according to a priority order, and a recording medium for recording a processing program of the device. With the goal.

[0011]

According to a first aspect of the present invention, there is provided a method for detecting a state of a power system, comprising the steps of:
In a power system stabilizing device that combines a plurality of control signals output from a plurality of control signal calculation means for calculating a control signal and controls a power system device with the combined control signal, the power signal is output from the control signal calculation means. A plurality of control signals are combined according to a priority within a predetermined range so that they can be distributed, and control signal determination means for outputting the obtained control signal is provided. According to this means, the control signal determining means allocates a plurality of control signals of the control signal calculating means for calculating the control signal of the power system equipment according to the priority within a predetermined range of the power system equipment. Since the control signals of the calculating means are combined, a control signal having a higher priority can achieve a control effect as designed.

According to a second aspect of the present invention, in the power system stabilizing apparatus according to the first aspect, the control signal determining means includes a predetermined control signal set corresponding to each control signal output from the control signal calculating means. Variable limiting means capable of outputting a limited control signal obtained by limiting each control signal corresponding to the lower limit setting limiting range, and a control signal for combining the limited control signals output from the variable limiting means and outputting a combined control signal Combining means;
Combining signal limiting means for limiting the combined control signal output from the control signal combining means to within a predetermined range and outputting the limited combined control signal to the power system equipment; and each limiting control output from the variable limiting means. Limiting range setting means for determining and setting each predetermined upper and lower limit setting limiting range of the variable limiting means in accordance with a signal and a predetermined priority order is provided. According to this means, the upper and lower limit setting limit range of the variable limiter is assigned to the priority of each control signal of the control signal calculator and the output of the variable limiter so that each control signal of the control signal calculator is distributed according to the priority. Therefore, the output of the control signal calculating means having a higher priority can obtain the control effect as designed.

According to a third aspect of the present invention, in the electric power system stabilizing device according to the first aspect, each of the predetermined upper and lower limit setting limit ranges set corresponding to each control signal output from the control signal calculating means. Variable limiting means for outputting a limited control signal that limits each control signal to be controlled; control signal combining means for combining the limited control signals output from the variable limiting means to output a combined control signal; The combined signal limiting means for limiting the combined control signal output from the signal combining means to within a predetermined range and outputting the limited combined control signal to the power system equipment; and each control signal output from the control signal calculating means. Based on the corresponding priority and the internal value of the control signal synthesizing means, each predetermined upper and lower limit setting limiting range of the variable limiting means is determined so as to distribute a plurality of control signals within a predetermined range of the synthetic signal limiting means. To those it provided a restriction range setting means for setting. According to this means, the upper and lower limit setting limiting range of the variable limiting means is set so that each control signal of the control signal calculating means is distributed according to the priority within the upper and lower limiting range. Since the control signal is set based on the internal value of the control signal synthesizing means, the control signal of the control signal calculating means having a higher priority can obtain the designed control effect.

According to a fourth aspect of the present invention, there is provided the power system stabilizing device according to the first aspect, wherein each of the predetermined upper and lower limit setting limits corresponds to each control signal output from the control signal calculating means. Variable limiting means for outputting a limited control signal that limits each control signal to be controlled; control signal combining means for combining the limited control signals output from the variable limiting means to output a combined control signal; The combined signal limiting means for limiting the combined control signal output from the signal combining means to within a predetermined range and outputting the limited combined control signal to the power system equipment; and each control signal output from the control signal calculating means. The variable limiting means distributes a plurality of control signals within a predetermined range of the combined signal limiting means based on the corresponding priority, the limited control signal of the variable limiting means, and the combined control signal of the control signal combining means. It is obtained as provided with restriction range setting means for setting to determine each predetermined upper limit set limits of. According to this means, only when the output is limited by the combined signal limiting means, the control range setting means calculates the upper and lower limit setting limiting range of the variable limiting means based on the output of the variable limiting means. Therefore, the amount of calculation at all times can be reduced.

According to a fifth aspect of the present invention, there is provided the power system stabilizing device according to the first aspect, wherein each of the predetermined upper and lower limit setting limit ranges is set corresponding to each control signal output from the control signal calculating means. Variable limiting means for outputting a limited control signal that limits each control signal to be controlled; control signal combining means for combining the limited control signals output from the variable limiting means to output a combined control signal; The combined signal limiting means for limiting the combined control signal output from the signal combining means to within a predetermined range and outputting the limited combined control signal to the power system equipment; and each control signal output from the control signal calculating means. Each of the variable limiting means is configured to distribute a plurality of control signals within a predetermined range of the combined signal limiting means based on the corresponding priority, the internal value of the control signal combining means, and the output signal of the combined signal limiting means. It is obtained as provided with restriction range setting means for setting to determine the lower limit set limits on the constant. According to this means, only when the output is restricted by the combined signal restriction means, the restriction range setting means
Since the calculation of the upper / lower limit setting limit range of the variable limiter based on the internal value of the control signal synthesizer is performed, the amount of calculation at all times can be reduced.

The invention according to claim 6 is the invention according to claims 1 to 5.
In any of the above described power system stabilizing devices, priority order setting means for setting a priority order corresponding to each control signal output from the control signal calculating means is provided. According to this means, the priority order of each control signal can be set to a predetermined value, so that it is possible to appropriately cope with the situation of the power system.

According to a seventh aspect of the present invention, in the power system stabilizing apparatus according to the first aspect, the control signal determining means is configured to control each predetermined signal set corresponding to each control signal output from the control signal calculating means. Variable limiting means capable of outputting a limited control signal obtained by limiting each control signal corresponding to the lower limit setting limiting range, and a control signal for combining the limited control signals output from the variable limiting means and outputting a combined control signal Combining means;
The combined control signal output from the control signal combining means is limited to a predetermined range, and the limited combined control signal is output to the power system equipment. A limit range storing means for storing a plurality of predetermined upper and lower limit setting restriction ranges, and a plurality of upper and lower limit setting limit ranges stored in the limit range storage means in accordance with a composite control signal output from the composite signal restricting means. And a limit range setting means for selecting each predetermined upper and lower limit setting limit range and setting it to the variable limit means.
According to this means, when the output is limited by the combined signal limiting means, the upper and lower limit values of the variable limiting means are selected from the upper and lower limit setting limiting ranges stored in advance, and the upper and lower limits of the variable limiting means are selected. Since the lower limit value is changed, the control signal calculating means having a higher priority can obtain the designed control effect.

According to an eighth aspect of the present invention, in the power system stabilizing device according to the first aspect, the control signal determining means includes a predetermined control signal set corresponding to each control signal output from the control signal calculating means. Variable limiting means capable of outputting a limited control signal obtained by limiting each control signal corresponding to the lower limit setting limiting range, and a control signal for combining the limited control signals output from the variable limiting means and outputting a combined control signal Combining means;
The combined control signal output from the control signal combining means is limited to a predetermined range, and the limited combined control signal is output to the power system equipment. Limiting range storing means for storing a plurality of predetermined upper and lower limit setting limiting ranges, and a plurality of upper and lower limits stored in the limiting range storing means in accordance with the limiting control signal of the variable limiting means and the combined control signal of the combined signal limiting means. There is provided a limit range setting means for selecting each predetermined upper and lower limit setting limit range from the set limit range and setting the selected upper and lower limit set limit range to the variable limiter. According to this means, when the output is limited by the combined signal limiting means, the upper and lower limit setting limit range in which the upper and lower limit values of the variable limiting means are stored in advance according to the output state of the variable limiting means. You can choose from
The upper and lower limit values of the variable limiting means can accurately correspond to the power system status.

According to a ninth aspect of the present invention, in the power system stabilizing device according to the first aspect, the control signal determining means is configured to control each predetermined signal set corresponding to each control signal output from the control signal calculating means. A variable limiter that limits the output to a lower limit setting range and outputs a limit control signal; a control signal synthesizer that synthesizes each of the limit control signals output from the variable limiter and outputs a synthetic control signal; The combined control signal output from the control signal combining means is limited to a predetermined range, and the limited combined control signal is output to the power system equipment. The combined signal limiting means corresponds to each control signal of the control signal calculating means. Limiting range storing means for storing each predetermined upper and lower limit setting limiting range; and a plurality of upper and lower limit settings stored in the limiting range storing means according to the internal value of the control signal synthesizing means and the synthesized control signal of the synthesized signal limiting means. Select each predetermined upper limit set limits from among the limited range is obtained as a limit range setting means for setting the variable restrictor means. According to this means, when the output is limited by the combined signal limiting means, the internal state of the control signal combining means and the upper and lower limit setting limit ranges of the variable limiting means can be selected from those stored in advance, so that the variable The upper and lower limit setting limit range of the limiting means can be appropriately selected appropriately in accordance with the situation of the power system.

According to a tenth aspect of the present invention, in the power system stabilizing device according to the first aspect, the control signal determining means is configured to control each predetermined signal set corresponding to each control signal output from the control signal calculating means. A variable limit synthesizing unit that limits each control signal corresponding to the lower limit setting limit range, synthesizes each limit control signal, and outputs the resultant signal as a synthetic limit control signal, and a synthetic limit control signal output from the variable limit synthesizer. A combined signal limiting unit that outputs a combined control signal limited to a predetermined range to the power system equipment, and a variable limiting combining unit that varies according to the priority corresponding to each control signal output from the control signal calculating unit. Limit range setting means for determining and setting each upper / lower limit setting limit range of the variable limit synthesizing means based on the internal value or the internal value and the synthesis control signal of the synthesis signal limiting means is provided. One in which the. According to this means, the upper and lower limit setting limit range of the variable limit synthesizing means is set so that each control signal of the control signal calculating means is distributed according to the priority within the upper and lower limit setting limit range of the power system equipment. Since the calculation is performed based on the priority of each output and the internal value of the variable limit synthesizing means, the control effect of the control signal calculating means having a higher priority can obtain the designed control effect. Further, only when the output is limited by the combined signal limiting means, the upper and lower limit setting limited range is calculated, so that the amount of calculation at all times can be reduced.

According to an eleventh aspect of the present invention, in the power system stabilizing device according to the first aspect, the control signal determining means is configured to control each predetermined signal set corresponding to each control signal output from the control signal calculating means. A variable limit synthesizing unit that limits each control signal corresponding to the lower limit setting limit range, synthesizes each limit control signal, and outputs the resultant signal as a synthetic limit control signal, and a synthetic limit control signal output from the variable limit synthesizer. Combined signal limiting means for outputting a combined control signal limited to a predetermined range to the power system equipment, priority setting means for setting a priority corresponding to each control signal of the control signal calculating means, and priority An internal value of the variable limit synthesizing means according to the priority corresponding to each control signal set by the setting means, or a variable control based on the internal value and the synthetic control signal of the synthetic signal limiting means. Determining the respective upper and lower limit setting limits combining means, in which the provided the restriction range setting means for setting. According to this means, the priority corresponding to each control signal of the control signal calculating means performed by the priority setting means is set to the internal value of the variable limit synthesizing means, or the internal value and the synthetic control signal of the synthetic signal limiting means. Therefore, the priority of each output of the control signal calculation means can be set appropriately according to the situation of the power system.

According to a twelfth aspect of the present invention, in the power system stabilizing device according to any one of the first to eleventh aspects, a limit control signal of the variable limiter, an internal value of the control signal synthesizer, and An internal value, an effective value calculating means for calculating an effective value of a value corresponding to an output value of the combined signal limiting means for a certain period is provided, and a control signal calculating means for each of the control signals corresponding to the control signal calculating means is provided based on the obtained effective value. The upper and lower limit setting limit range is determined. According to this means, an effective value calculating means for calculating an effective value of the output value of the variable limiting means, the internal value of the control signal combining means, the internal value of the variable limiting combining means, and the output value of the combined signal limiting means is provided. Since the upper and lower limit setting limit range is determined by the effective value by the value calculating means, the input signal of the limit range setting means is stabilized, and the change in the upper and lower limit setting limit range of the variable limit means or the variable limit combining means can be reduced. .

According to a thirteenth aspect of the present invention, in the power system stabilizing device according to any one of the first to twelfth aspects, an upper limit value and a lower limit value as upper and lower limit setting limit ranges output from the limit range setting means. Are compared with each other, and the absolute value of the smaller of the two absolute values is set as a new upper limit value, and a value obtained by multiplying the new upper limit value by -1 is set as a lower limit value. Upper and lower limit value adjusting means for setting the variable limiting means or the variable limiting synthesizing means so as to make the absolute values equal are provided. According to this means, the upper and lower limit value adjusting means is provided, and the upper and lower limit values of the upper and lower limit setting limit ranges are adjusted to positive and negative values having the same absolute value, respectively.
Even when each control signal of the control signal calculation means is oscillating around zero, a uniform control effect is obtained, and convergence is improved.

According to a fourteenth aspect of the present invention, there is provided the power system stabilizing device according to any one of the first to twelfth aspects, wherein the upper limit value and the lower limit value are upper and lower limit setting limit ranges output from the limit range setting means. Are compared with each other, and when the absolute value of the upper limit value is larger than the absolute value of the lower limit value,
The value obtained by multiplying the lower limit of the sign by the minus sign is set as a new upper limit,
A first means for directly setting the lower limit as a new lower limit, and when the absolute value of the upper limit is smaller than the absolute value of the lower limit,
A second unit that sets a value obtained by multiplying the upper limit by a minus sign as a new lower limit, and sets the upper limit as a new upper limit as it is,
An upper and lower limit adjusting means for setting the upper limit and the lower limit obtained by the first means or the second means to the variable limiting means or the variable limiting synthesizing means is provided. According to this means, when determining the upper / lower limit setting limit range of the variable limiting means or the variable limiting combining means, only the substitution operation for one of the upper limit value and the lower limit value is sufficient. In addition, the storage capacity required for calculation can be reduced.

According to a fifteenth aspect of the present invention, a plurality of control signals output from a plurality of control signal calculating means for calculating a control signal based on a detection signal obtained by detecting a state quantity of the power system are synthesized. In a recording medium that records a processing program of a power system stabilizing device that controls a power system device by a synthesized control signal, a plurality of control signals output from a control signal calculating unit can be distributed in a predetermined range according to priority. A storage medium for recording a processing program of a power system stabilizing device including a control signal determination unit that outputs a control signal obtained by combining the power supply system and the power supply system.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a power system stabilizing apparatus according to a first embodiment of the present invention.

In FIG. 1, 1 is a power system, 2A is a power system stabilizing device, and 4 is a power system device. The power system stabilizing device 2A includes a control signal calculating unit 3 and a control signal determining unit 11. The first embodiment shown in FIG. 1 is characterized in that a control signal determining means 11 is provided instead of the adder 5 and the limiter 6 of the conventional power system stabilizing device 2 shown in FIG.

Here, the control signal calculating means 3 controls the power system equipment 4 by at least one or more control signal calculating means for calculating one or more control signals based on the detection signal of the state quantity of the power system. To output a control signal for performing the operation. The control signal determining means 11 combines the control signals output from the control signal calculating means 3 according to the priority and outputs a control signal obtained by limiting the control signals to a predetermined range.

Next, the operation of the first embodiment will be described.

First, the control signal calculating means 3 detects the electrical or mechanical quantities of the power system 1 and, based on the detected signals, the purpose of controlling the power system equipment 4, for example, power system stabilization control, power flow control, reactance. It is calculated into a plurality of control signals corresponding to control purposes such as control, phase control, and voltage control. Next, the control signal determination unit 11 inputs a plurality of control signals from the control signal calculation unit 3, performs adjustment, synthesis, and restriction, and provides the obtained signal to the power system equipment 4 as a control signal. . The power system equipment 4 operates according to the control signal to achieve the control purpose.

It should be noted that, even when a plurality of control signals are combined, if the frequencies of the plurality of control signals are different, the power system equipment 4 can achieve each control purpose with the combined control signals. . Such a power system device 4 may be provided with, for example, a semiconductor switch element. In this case, the output of the control signal determination unit 11 corresponds to a gate signal of the semiconductor switch element in the power system device 4. .

As described above, according to the first embodiment, the control signal determining means 11 to which the plurality of control signals obtained by the control signal calculating means 3 are input can be adjusted, combined, and limited. Since the plurality of outputs of the means 3 can be distributed according to the priority, the output of the control signal calculating means 3 can be distributed according to the priority within the input limit value of the power system equipment 4, and the priority is high. The more the output of the control signal calculation means 3, the more the designed control effect is obtained. Further, since the control signal calculating means 3 is almost the same as that of the prior art, the control signal determining means 11 is added between the control signal calculating means 3 and the power system equipment 4 so that the conventional power system stabilization is achieved. The device 2 can be easily changed to the power system stabilizing device 2A of the first embodiment of the present invention.

FIG. 2 is a block diagram of a power system stabilizing apparatus according to a second embodiment of the present invention.

In FIG. 2, the control signal determining means 11
It comprises variable limiting means 12, control signal combining means 13, combined signal limiting means 14, and limited range setting means 15. The variable limiter 12 includes a plurality of limiters 12a. The control signal combining means 13 comprises an adder 13a. The combined signal limiting means 14 is composed of one limiter 14a.

Here, the variable limiting means 12 limits each of the control signals output from the control signal calculating means 3 to a predetermined upper and lower limit setting limiting range which is set corresponding to each control signal. Can be output. The control signal synthesizing unit 13 synthesizes each of the limited control signals output from the variable limiting unit 12, and outputs a synthesized control signal. The combined signal limiting unit 14 limits the combined control signal output from the control signal combining unit 13 to a predetermined range and outputs the limited combined control signal to the power system equipment 4. The restriction range setting means 15 determines and sets each predetermined upper and lower limit setting restriction range of the variable restriction means 12 according to the priority order corresponding to each control signal output from the control signal calculation means 3.

Next, the operation of the second embodiment will be described.

First, the signal from the control signal calculating means 3 and the respective signals of the limit range setting means 15 are input by the variable limiting means 12 of the control signal determining means 11. The number of limiters 12 a of the variable limiting means 12 is the same as the number of outputs of the control signal calculating means 3. For example, if the number of outputs of the control signal calculating means 3 is three, the limiter 1
The number of 2a is three. Each control signal from the control signal calculating means 3 is transmitted to the limiter 12 of the corresponding variable limiting means 12.
is input to a. The upper limit value and the lower limit value of the limiter 12 a of the variable limiter 12 are set to values specified by the output value of the limit range setting unit 15. The limiter 12a of the variable limiter 12 limits each of the input control signals of the control signal calculator 3 to a value within the range of the upper and lower limits and outputs the control signal. The output of the limiter 12a of the variable limiter 12 is input to the control signal synthesizer 13.

The limiter 12a of the variable limiting means 12
Can be changed by changing the specified upper and lower limit values of the limiter 12a of the variable limiter 12 output by the limit range setting unit 15.

The control signal synthesizing means 13 includes an adder 13a
Then, a plurality of outputs of the variable limiting means 12 are added and combined.
The plurality of outputs of the variable limiter 12 synthesized by the adder 13a are input to the synthesized signal limiter 14 as outputs of the control signal synthesizer 13. The combined signal limiting unit 14 limits the output of the control signal combining unit 13 by the limiter 14 a and outputs a control signal to the power system equipment 4.

Generally, since the control signal to the power system equipment 4 is an operation amount of the power system equipment 4, there is an upper limit value and a lower limit value, and the limiter 14a sets the upper limit value and the lower limit value. I have. The restriction range setting unit 15 receives a plurality of outputs of the variable restriction unit 12 and calculates specified values of an upper limit value and a lower limit value of the limiter 12a of the variable restriction unit 12 from the plurality of outputs of the variable restriction unit 12. The specified upper and lower limit values of the limiter 12a of the variable limiter 12 calculated by the limit range setting unit 15 are input to the variable limiter 12 as the output of the limit range setting unit 15. It should be noted that the limit range setting means 15 holds in advance the set values of the upper and lower limit values of the limiter 14a of the combined signal limiting means 14.

Here, the processing of the limit range setting means 15 will be described with reference to FIG.

First, in step s1, the limit range setting means 15 is started. Next, in step s2, the limit range setting unit 15
The upper limit value and the lower limit value of each limiter 12a of the variable limiter 12 set and stored in the variable limiter 12 are sent to the variable limiter 12.
As a result, the variable limiter 12 sets the upper and lower limits of the limiter 12 a to the designated values sent from the limit range setting unit 15. Next, in step s3, the limit range setting unit 15
Reads the output value of the variable limiting means 12. Further, in the process s4, operation permission (Yes) or operation non-permission (No) is given according to the preset operation interval time of s3.

In this process, if the elapsed time from the previous operation permission (Yes) is shorter than the set operation interval time of s3, the operation is not permitted (No), and the process returns to step s3 again. When operation permission (yes) is given in s4,
In step s5, the upper and lower limit values of each limiter 12a of the variable limiter 12 are calculated.

FIG. 4 shows the variable restricting means 12 by the process s5.
Shows the calculation processing of the upper and lower limit values of each limiter 12a, where the number of output signals of the control signal calculation means 3 is n, and a variable corresponding to the i-th (i = 1... The upper limit value of the limiter 12a in the limiting means 12 is MAXi,
The lower limit is set to MINi and the output value is set to Xi. The output value Xi satisfies MINi ≦ Xi ≦ MAXi. Synthetic signal limiting means 1
4, the upper limit value of the limiter 14a is Mx, and the lower limit value is Mn. Note that M represents an internal variable.

First, when the calculation is started in processing R1, 1 is substituted for i and 0 is substituted for the internal variable M in processing R2. next,
In the process R3, the upper limit value MAXi of the i-th priority limiter 12a is set to Mx and (Mx−
M), and the lower limit value MINi is similarly calculated as (Mn−
M).

Next, in process R4, the counter value i is compared with the number n of output signals. If i <n, the process proceeds to process R5, where i ≧
If n, the calculation ends in process R7. In process R5,
The internal variable M is updated to (M + Xi).
Is assigned the value of i + 1. When the process R6 ends, the process moves to the step of the process R3, and the above flow is repeated until i = n. When i = n, the operation of the flowchart in FIG. 4 ends at the step of the process R7, and the process s5 in FIG. 3 ends.

Next, in step s6 in FIG. 3, upper and lower limit value calculated values MAXi and MINi (i = 1 to n) in step s5
Is sent to the variable limiter 12 as a new specified value of the upper and lower limit of each limiter 12a of the variable limiter 12.

As a result, the variable limiter 12 sets the upper and lower values of the limiter 12a to the new designated values sent from the limit range setting unit 15. When the process s6 ends, the process moves to the step of the process s98. In the process s98, a case where a stop command has been issued in the process of the limit range setting means 15 (Yes) is given, and there is no stop command and the limit range setting means 15
(No) is given if the processing of (1) is continued. If (No) is given, the process returns to the step s3. If (yes) is given, the process proceeds to step s99 to stop the process of the limit range setting unit 15.

As described above, according to the second embodiment, the upper limit and the lower limit of the limiter 12a of the corresponding variable limiting unit 12 increase as the output of the control signal calculating unit 3 whose priority order is closer to 1. Further, the output of the control signal synthesizing unit 13 does not exceed the upper and lower limits of the limiter 14a of the synthesized signal limiting unit 14. Therefore, the output of the variable limiter 12 can be distributed according to the priority within a range not exceeding the upper and lower limit values of the limiter 14a.
The priority can be considered for the control purpose of the power system equipment 4 corresponding to each of the outputs, and the output of the control signal calculating means 3 having a higher priority can obtain the designed control effect.

FIG. 5 is a block diagram of a power system stabilizing apparatus according to a third embodiment of the present invention. 5 and 2
Is different from the block configuration diagram shown in the second embodiment in that the control signal synthesizing means 13 includes a plurality of adders 13a1 and 13a2.

Next, the operation of the third embodiment will be described. The operation of the same part as that of the second embodiment is the same as that of the third embodiment.
The description is omitted because it is the same as the embodiment.

First, the adder 13a1 of the control signal combining means 13 shown in FIG. 5 adds the output of the upper limiter 12a and the output of the adder 13a2 and outputs the result to the combined signal limiting means 14. The adder 13a2 adds the output of the middle limiter 12a and the output of the lower limiter 12a to adder 1
Output to 3a1. In FIG. 5, the number of limiters of the variable limiting means 12 is three. However, even in the case of three or more, the output of the adder 13a and the output of the limiter 12a are sequentially added.
The synthesis is repeated in the same manner, and finally the control signal
Outputs one signal. Further, the internal value of the control signal synthesizing unit 13, that is, the output value of the adder 13a2 is input to the limit range setting unit 15 of FIG. in this case,
The priority of the output of the variable limiting means 12 is determined by each limiter 12.
The order is determined by the order of input from a to the adders 13a1 and 13a2.

FIG. 6 is a flowchart showing an example of the operation of the restricted range setting means 15 according to the third embodiment.

The processes s1, s2, s31,
The same reference numerals as those in steps s4 to s6, s98, and s99 denote the same or corresponding steps in the second embodiment shown in FIG. Processing for reading the internal value of the synthesizing means 13 is added, and the operation in another step is the second step.
This is almost the same as the embodiment.

As described above, according to the third embodiment, the output of the control signal synthesizing means 13 is set in advance to the output of the variable limiting means 12 within a range not exceeding the upper and lower limits of the limiter 14a of the synthesized signal limiting means 14. The distribution can be performed in accordance with the determined priority, and the priority can be considered for the control purpose of the power system equipment 4 corresponding to each output of the variable limiting means 12. As the output increases, the control effect as designed can be obtained. Further, the limit range setting means 15 calculates the internal range of the control signal
In order to determine the upper and lower limits of the control range, the number of signals to be processed need be smaller than the number of various quantities detected from the power system 1 in the control signal calculation means 3 and the number of calculations to be performed at all times is reduced. Can be done.

FIG. 7 is a block diagram of a power system stabilizing apparatus according to a fourth embodiment of the present invention.

In the fourth embodiment, the restriction range setting means 15 includes a restriction control signal of the variable restriction means 12 and a control signal synthesizing means according to the priority corresponding to each control signal output from the control signal calculation means 3. The predetermined upper and lower limit setting limit ranges of the variable limiter 12 are determined and set based on the combination control signal 13.

Next, the operation of the fourth embodiment will be described.

First, the variable limiting means 12 and the limiter 12
The operations of the control signal synthesizing unit 13, the adder 13a, the synthesized signal limiting unit 14, and the limiter 14a are almost the same as those of the second embodiment, and thus the description thereof will be omitted.

A plurality of outputs of the variable limiter 12 and an output of the composite signal limiter 14 are input to the limit range setting unit 15. The restriction range setting means 15 executes the processing shown in FIG. The processing of the limit range setting means 15 and the second
The difference from the processing of FIG. 3 showing the processing of the embodiment is that processing s
7 is present. The operations of the processes s1 to s99 except the process s7 are the same as those in the second embodiment.

At step s4 in FIG. 8, the limit range setting means 1
When the operation permission of Step 5 is issued (Yes), the process proceeds to Step s7. In processing s7, the output Y of the combined signal limiting means 14 is compared with the upper limit Mx and the lower limit Mn of the limiter 14a,
If Mn ≦ Y ≦ Mx, (No) is determined in step s7 if Y <Mn or Y> Mx (Yes).

The limit range setting means 15 holds the upper limit value Mx and the lower limit value Mn of the limiter 14a and can refer to these values. If (No) in the process s7, it is determined that the change of the limiter 12a of the variable limiting unit 12 is unnecessary, and the process proceeds to the process s3. On the other hand, if (Yes), it is determined that the limiter 12a of the variable limiter 12 needs to be changed, and the process proceeds to step s5, where new upper and lower limits of the limiter 12a are calculated.

As described above, according to the fourth embodiment, only when the output of the control signal synthesizing unit 13 is limited by the synthesized signal limiting unit 14, each of the limiters 12 of the variable limiting unit 12
Since the calculation of the upper and lower limit values of “a” is performed, the calculation processing can be reduced.

FIG. 9 is a block diagram of a power system stabilizing apparatus according to a fifth embodiment of the present invention. 9 and 5
The difference from the block diagram of the third embodiment shown in FIG. 13 is that the control signal of the combined signal limiting means 14 is additionally input to the limiting range setting means 15.

Next, the operation of the fifth embodiment will be described with reference to FIG. The operation of the same parts as those of the third embodiment shown in FIGS. 9 and 5 is substantially the same as that of the above-described embodiment, and thus the description thereof will be omitted.

The limit range setting means 15 executes the processing shown in FIG. 10 and differs from the third embodiment shown in FIG. Processing for reading also the output value of the means 14;
7 is added. The processing s1 to s6, s
The operations at 98 and s99 are the same as those in the third embodiment. Further, the operation of the process s7 in FIG. 10 is almost the same as the flowchart of the fourth embodiment shown in FIG.

As described above, according to the fifth embodiment, the output of the control signal synthesizing unit 13 determines the output of the variable limiting unit 12 in advance within a range not exceeding the upper and lower limits of the limiter 14a of the synthesized signal limiting unit 14. The priority can be considered in accordance with the assigned priority, and the priority can be considered for the control purpose of the power system equipment 4 corresponding to each output of the variable limiting means 12, and the output of the control signal calculating means 3 having a higher priority is higher. The control effect as designed can be obtained. Further, only when the output of the adder 13a is limited by the combined signal limiting unit 14, the upper and lower limit values of each limiter 12a of the variable limiting unit 12 are calculated, so that the calculation process at all times can be reduced.

FIG. 11 is a block diagram of a power system stabilizing apparatus according to a sixth embodiment of the present invention.

In FIG. 11, the sixth embodiment is similar to the second embodiment.
This is obtained by adding a priority setting unit 16 to the block configuration diagram of FIG. 2 corresponding to the embodiment.

Here, the priority setting means 16 sets the priority in accordance with each control signal output from the control signal calculation means 3.

Next, the operation of the sixth embodiment will be described. Note that the variable limiter 12, the limiter 12a, the control signal combiner 13, the adder 13a, and the combined signal limiter 1
4. Since the operation of the limiter 14a is substantially the same as the operation described in the second embodiment, the description is omitted.

First, the priority setting means 16 has an input means 16a, from which the priority of each output of the control signal calculating means 3 can be input, and the input data can be stored. Is possible. Priority setting means 1
The output of 6 is sent to the limit range setting means 15. The restriction range setting means 15 receives a plurality of outputs of the variable restriction means 12 and the outputs of the priority setting means 16, and
The specified values of the upper limit value and the lower limit value of the limiter 12a of the variable limiter 12 are calculated from the plurality of outputs and the output of the priority setting unit 16. The specified upper and lower limit values of the limiter 12a of the variable limiter 12 calculated by the limit range setting unit 15 are set in the variable limiter 12 as the output of the limit range setter 15.

Here, the processing based on FIG. 12 is performed by the limit range setting means 15. In the processing of FIG. 12, processing s8
Other processes are the same as those of the second embodiment shown in FIG. In step s4, when the operation permission of the restriction range setting unit 15 is output (Yes), the process proceeds to step s8. In the process 8, the data indicating the priority of the control signal calculating means 3 held in the priority setting means 16 is read by the restricted range setting means 15.

FIG. 13 shows a specific process s8 of the limited range setting means 15 shown in FIG.
When the process starts at step 1, the process goes to step T2 to set the limit range setting unit 15
Reads the priority of each output of the control signal calculating means 3 which is input to the priority setting means 16 and is held. The input of the priority order is independent of the flowchart showing the operation of the restriction range setting means 15 in FIG.
No matter which process in the flowchart of
The priority order can be input using the input unit 16a included in the priority order setting unit 16.

When each priority is input by the input means 16a, each priority stored in the priority setting means 16 is replaced with the input value. Each priority is given a value of 1, 2, 3 in descending order. For example, there are three outputs of the control signal calculation means 3, and for convenience, each output is A,
If the names are B and C, the output priority order is B, A, and C when A-2, B-1, and C-3 are given.

Next, in process T3, the limit range setting means 1
5 and priority setting means 16 held in step 5
Is compared with the priority read from, and if there is a difference (Yes), the process shifts to process T4 as a change in the priority.
If there is no difference (No), the process proceeds to the end of the process T5. In the process T4, each priority stored in the restriction range setting unit 15 is changed to a value read by the priority setting unit 16;
Move to processing T5. When the priority setting change flow ends in process T5, process S8 in the flowchart of FIG. 12 ends, and the process proceeds to process S5.

As described above, according to the sixth embodiment, the priority order can be changed even while the limited range setting means 15D is operating, so that the power system stabilizing device 2D can be stopped without stopping the system. Can be set according to the priority.

FIG. 14 is a block diagram of a power system stabilizer according to another embodiment of the sixth embodiment.

The difference between FIG. 14 and the block diagram of the third embodiment shown in FIG. 5 is that a priority order setting means 16 and a distributor 13b of the control signal synthesizing means 13 are provided.

Next, the operation of the present embodiment will be described. The description of the operation of the same parts as in the present embodiment and the third embodiment is omitted.

First, the output of the priority order setting means 16 is sent to the limit range setting means 15, and the outputs from the limiters 12a of the variable limiting means 12 provided to the control signal synthesizing means 13 are output in descending order of priority. The data is exchanged by the distributor 13b so as to be input to the adder.

FIG. 15 shows an example of a flowchart showing the operation of the control signal determining means 11 of the present embodiment.

In FIG. 15, processes s1, s2, s3
1, s4, s5, s6, s98, and s99 are the same as those in the third embodiment in FIG.
The operation permission of the limited range setting means 15 is output (YE
S), and proceed to processing s8.

Next, in step s8, the priority setting means 1
The data indicating the priority of the control signal calculation means 3 stored in 6 is read by the restriction range setting means 15. The detailed flowchart and operation in the process s8 are the same as those in the sixth embodiment shown in FIG. In the next process s9, the output from each limiter 12a of the variable limiting unit 12 is input to the distributor 13b of the control signal synthesizing unit 13, and the output from the limiter is arranged in order from the highest priority read in the process s8. Replace the output of
Move to 5.

As described above, according to the other embodiment of the sixth embodiment, the output of the control signal synthesizing means 13 is controlled within the range not exceeding the upper and lower limits of the limiter 14a of the synthetic signal limiting means 14. Can be distributed according to a predetermined priority order, and the priority order can be considered for the control purpose of the power system equipment 4 corresponding to each output of the variable limiting means 12. In addition, since the priority can be changed even while the control signal determination unit 11 is operating, the priority can be appropriately set according to the state of the power system without stopping the power system stabilizing device 2.

FIG. 16 is a block diagram of a power system stabilizing apparatus according to still another embodiment of the sixth embodiment of the present invention. The block configuration of FIG.
1 is substantially the same as the block diagram showing FIG.

Next, the operation of the present embodiment will be described.

Variable limiting means 12, limiter 12a, control signal combining means 13, adder 13a, combined signal limiting means 1
4, the operation of the limiter 14a, the priority order setting means 16, and the input means 16a are substantially the same as the respective operations described in the fourth embodiment, and thus the description thereof is omitted.

The limit range setting means 15 is provided with the variable limit means 1
2, a plurality of outputs, an output of the combined signal limiting unit 14, and an output of the priority order setting unit 16.

The restriction range setting means 15 executes the processing shown in FIG. The processes s1 to s99 have substantially the same operations and functions as those in the flowcharts shown in FIGS. 3, 6, and 8, and these embodiments are the same as the present embodiment.

As described above, according to another embodiment of the sixth embodiment, only when the output of the control signal synthesizing means 13 is limited by the synthesized signal limiting means 14, the variable limiting means 12
Since the upper and lower limit values of each limiter 12a are calculated,
Regular calculation processing can be reduced. In addition, since the priority can be changed even while the control signal determination unit 11 is operating, the priority can be appropriately set according to the state of the power system without stopping the power system stabilizing device 2. Further, the case where the output of the control signal synthesizing unit 13 is limited can be determined by the synthesizing signal limiting unit 14. Therefore, when the output of the control signal synthesizing unit 13 is limited, the input unit 16 a of the priority order setting unit 16 can be used. The priority order can be appropriately changed, and an efficient limitation range can be set in the input range of the power system equipment 4.

FIG. 18 is a block diagram of a power system stabilizing apparatus showing another embodiment of the sixth embodiment.

In FIG. 18, the difference from the block diagram according to the third embodiment shown in FIG. 5 is that the output of the variable limiter 12 and the combined signal
And the output of the priority setting means 16 are input.

Next, the operation of the present embodiment will be described.

The operation of the same portions as those of the present embodiment and the sixth embodiment is the same as that of the above-described embodiment, and the description thereof will be omitted. FIG. 19 is a flowchart showing an example of the operation of the restricted range setting unit 15 according to the present embodiment. Processing s1 to s9, s98 and s99 in FIG.
Has the same operations and functions as the flowcharts shown in FIGS. 13, 15, and 17, and a detailed description thereof will be omitted.

As described above, according to the present embodiment, only when the output of control signal synthesizing means 13 is limited by synthesized signal limiting means 14, each limiter 12a of variable limiting means 12
Since the upper and lower limit values are calculated, the processing can be constantly reduced. Further, even when the control signal determination means 11 is operating,
Since the priority order is changed, the power system stabilizing device 2
Prior to stopping G, it is possible to appropriately set the priority in accordance with the status of the system, and the output of the control signal calculating means 3 having a higher priority can achieve the designed control effect. Furthermore, when the output of the control signal synthesizing unit 13 is restricted by the synthesizing signal limiting unit 14, it can be determined and recognized. Therefore, when the output of the control signal synthesizing unit 13 is restricted, the priority order can be appropriately changed. This makes it possible to set an efficient priority range in the input range of the power system equipment 4.

FIG. 20 is a block diagram of a power system stabilizing apparatus according to the seventh embodiment.

In FIG. 20, control signal determining means 11
Is composed of a variable limiting unit 12, a control signal synthesizing unit 13, a synthesized signal limiting unit 14, a limited range setting unit 15, and a limited range storing unit 17. The limited range storage unit 17 includes an input unit 17a and a storage unit 17b.

Next, the operation of the seventh embodiment will be described. The operation of the same part as in the second embodiment is the same as that in the above-described embodiment, and therefore, the description is omitted.

The inputs to the restriction range setting means 15 are the output of the composite signal restriction means 14 and the output of the restriction range storage means 17. The limit range storage means 17 is capable of inputting an upper limit value and a lower limit value of each limiter 12a of the variable limit means 12 by the input means 17a, and the data input by the input means 17a is stored in the storage means 17b. The storage unit 17b can store a plurality of patterns of data.

FIG. 21 is a flow chart of the restriction range setting means 15. The restriction range setting means 15 has means for instructing the start and stop of the execution of the restriction range setting means 15.

First, in process s1, the control signal determining means 1
The first limited range setting means 15 is activated. Next, processing s
The upper and lower limit values of each limiter 12 a of the variable limiter 12 set and stored in the limit range setting unit 15 at 2 are sent to the variable limiter 12. And the variable limiting means 12
Sets the upper and lower limits of the limiter 12a to the limit range setting means 1
Set to the value sent from 5. Combined signal limiting means 14
The upper and lower limits of the limiter 14a are
Are set and stored in the upper and lower limits.

Next, in step s10, a plurality of patterns of the upper limit value and the lower limit value for each limiter 12a of the variable limiter 12 are prepared and all are stored in the limit range storage 17.

FIG. 22 shows an example of upper and lower limit data of each limiter 12a of the variable limiter 12 stored in the limit range storage 17, and (1) and (2) of the input data in FIG.
Is data input from the input unit 17a of the restricted range storage unit 17. The stored data (1) and (2) are data for storing data input from the input unit 17a in the storage unit 17b.

In the process s33 in FIG. 21, the limit range setting means 15 reads the output value of the composite signal limiting means 14.
The reading of the output value of the combined signal limiting means 14 is performed in step s4.
In, operation permission (Yes) is given according to the preset operation interval time of the process s33, and the process proceeds to the next process. If the elapsed time from the previous operation permission is shorter than the set operation interval time, no operation permission is given (No), and the process returns to step s33 again.

When the operation permission (yes) is given in the process s4, the process proceeds to a process s7. In the process s7, the combined signal limiting means 14 outputs the output Y of the combined signal limiting means 14 and the limiter 1
4a is compared with the upper limit value MX and the lower limit value MN, and MN ≦
If Y ≦ MX, a signal representing (No) is sent to the limited range setting means 15 in step s7 if Y <MN, Y> MX, a signal representing (Yes). In step s7, if (NO), it is determined that the change of the limiter 12a of the variable limiting unit 12 is unnecessary, and the process shifts to step s33. On the other hand, if (Yes), it is determined that the change of the limiter 12a of the variable limiter 12 is necessary, and the process shifts to step s51 to select a new upper and lower limit value of the limiter 12a.

FIG. 23 shows an example of a flow chart of the selection of the upper and lower limit values of the limiter 12a of the variable limiting means 12 performed in step s51.

In FIG. 23, when activated in process P1,
In the process P2, the limit range setting unit 15 stores the limiters 1 of the variable limit unit 12 stored in the limit range storage unit 17.
The pattern recognition number of the upper / lower limit value selected for setting to 2a is read. Enter the selected pattern recognition number
Regardless of which process in the flowchart of FIG. 21 is being executed, the selected pattern recognition number can be input using the input unit 17 a included in the limited range storage unit 17.

Next, in process P3, the restricted range storage unit 1
7 is compared with the selected pattern recognition number input from the input means 17a, and the pattern recognition numbers are different (Yes).
Moves to the process P4, assuming that the limiter 12a has been changed.
If there is no difference (No), the process moves to processing P6.

In the process P4, the selected pattern recognition number is stored in the storage means 17b as a pattern to be set in the limiter 12a, and the routine goes to a process P5. In the process P5, the limiter 12 stored in the storage unit 17b in a plurality of patterns is stored.
From the upper and lower limit values for a, the upper and lower limit values corresponding to the selected pattern recognition number are selected, and this value is set to the limiter 1
The value is passed to the limit range setting means 15 as a value to be set to 2a.

Thus, the selection of the upper and lower limit values to be newly set to the limiter 12a in the process P6 is completed, the process s51 in the flowchart of FIG. 21 is completed, and the process proceeds to the process s6 shown in FIG.

In the process s6 in FIG. 21, the upper and lower limit values selected in the process s51 are set to the respective limiters 12 of the variable limiter 12.
a as a new specified value of the upper and lower limits of the variable a
Sent to As a result, in the variable limiter 12, the upper and lower limits of the limiter 12 a are set to the new specified values sent from the limit range setting unit 15. When the process s6 ends, the process moves to the process s98. In the process s98, a case where the stop command of the process of the limit range setting unit 15 is issued (Yes) is given, and a case where the process of the limit range setting unit 15 is continued without the stop command is given (Yes). If (No) is given, the process returns to the process s33. If (yes) is given, the process proceeds to step s99, and the process of the restriction range setting unit 15 is stopped.

As described above, according to the seventh embodiment, the upper and lower limit values of each limiter 12a are easily selected from a plurality of patterns stored in the limited range storage means 17 in advance, and each limiter 12a is selected. The upper and lower limits of 12a can be changed.

FIG. 24 is a block diagram of a power system stabilizing apparatus according to an eighth embodiment of the present invention.

In FIG. 24, control signal determining means 11
Is composed of a variable limiting unit 12, a control signal synthesizing unit 13, a synthesized signal limiting unit 14, a limited range setting unit 15, and a limited range storing unit 17. In addition, the limited range storage unit 17 includes an input unit 17a and a storage unit 17b.

Next, the operation of the eighth embodiment will be described. The operation of the same part as that of the seventh embodiment is the same as that of the eighth embodiment, and the description is omitted.

First, the output of the variable limiter 12 and the output of the composite signal limiter 14 are input to the limit range setting unit 15. The restriction range setting means 15 executes the processing shown in FIG. 25, and differs from the flowchart of the seventh embodiment of FIG. 21 in the processing of processing s34 and processing s52. The operations in the processes s1, s2, s10, s4, s7, s6, and s99 are the same as in the seventh embodiment.

In the process s34 in FIG. 25, the limit range setting means 15 reads the output value of the composite signal limiting means 14 and the output value of the variable limiting means 12. In processing s52, processing s
If it is determined in step 7 that the limiter 12a of the variable limiter 12 needs to be changed (Yes), a new upper / lower limit value of the limiter 12a is selected with reference to the output value of the variable limiter 12.

FIG. 26 is a flow chart of the selection of the upper and lower limit values of each limiter 12a in the variable limiting means 12 performed in the process s52 of FIG.

The difference between FIG. 26 and the flowchart of the seventh embodiment shown in FIG.
2 is that processing P7, processing P81, and processing P82 are added. The operations in processing P1 to processing P6 are the same as in the seventh embodiment.

First, when activated in process P1, each output YN of the variable limiting means 12 is compared with the upper and lower limit values of the limiter 12a in process P7. Move to P82, Yn <M
If Nn, Yn> MXn, it is determined to be (Yes) and processing P8
Move to 1.

For example, the output number n of the control signal calculating means 3
Is three, the output number of the variable limiting means 12 is three,
MN1 ≦ Y1 ≦ MX1 holds, and MN2 ≦ Y2 ≦
If MX2 is satisfied and MN3 ≦ Y3 ≦ MX3 is satisfied, it is determined (no), and the process shifts to processing P82. On the other hand, MN1 ≦ Y1 ≦ MX1 and MN2 ≦ Y2 ≦ MX
2, and when MN3 ≦ Y3 ≦ MX3 is not established, it is determined to be (Yes), and the routine goes to Step P81. In the process P81, the output number of the output of the variable limiting means 12 is not MNn ≦ Yn ≦ MXn, and the process proceeds to the process P2. Processing P2
Then, all the outputs indicate that MNn ≦ Yn ≦ MXn is established, and the routine goes to a process P3.

In step s98 shown in FIG. 25, a case where a stop command is issued from the limit range setting means 15 is given (Yes), and a case where no stop command is issued and the process of the limit range setting means 15 is continued (No). give. In this case (No)
Is given, the process returns to the process s34. On the other hand, if (yes) is given, the process proceeds to step s99 to stop the process of the restriction range setting unit 15.

As described above, according to the eighth embodiment, since the output value state of the variable limiting means 12 is displayed, the operator can visually recognize the output state of the variable limiting means 12 and refer to this. The upper and lower limits of each limiter 12a can be easily selected from a plurality of patterns stored in advance in the limited range storage means 17 to change the upper and lower limits of each limiter 12a.

FIG. 27 is a block diagram of a power system stabilizing apparatus according to a ninth embodiment of the present invention.

In FIG. 27, control signal determining means 11
Comprises a control signal synthesizing unit 13, a synthesized signal limiting unit 14, a limited range setting unit 15, and a limited range storage unit 17. The limited range storage unit 17 is provided with an input unit 17a
And storage means 17b. The control signal combining means 13 includes a plurality of adders 13a and distributors 13b.

Next, the operation of the ninth embodiment will be described. The description of the operation of the same portion as that of the seventh embodiment will be omitted.

First, in the control signal synthesizing means 13, each output of the variable limiting means 12 is input to the distributor 13b. The distributor 13b distributes and outputs each output of the variable limiter 12 according to the connection pattern of the distributor 13b given from the limit range setting unit 15. The plurality of outputs of the distributor 13b are added by the plurality of adders 13a, and the outputs of the distributor 13b
Are combined into one signal and output. For example, as shown in FIG.
If there are two, the corresponding adders 13a1 and 13a2
And the three outputs of the distributor 13b are the adders 13a1
Are sequentially added to the adder 13a2, and the three signals are combined and output. The internal value of the control signal synthesizing unit 13 and the output of the synthesized signal limiting unit 14 are input to the limiting range setting unit 15.

Next, the restriction range setting means 15 executes the processing shown in FIG. The difference between FIG. 28 and the flowchart of the seventh embodiment shown in FIG. 21 is that processing s101, processing s34, processing s53, and processing s61 are added,
The operations in 1, processing s2, processing s4 to s7, and processing s99 are almost the same as in the seventh embodiment.

In the process s101 in FIG. 28, the upper limit value and the lower limit value of each limiter 12a of the variable limiter 12 and a plurality of distribution patterns of the distributor 13b of the control signal synthesizer 13 are prepared and stored in the limit range storage 17. Remember everything.

FIG. 29 shows an upper limit value and a lower limit value of each limiter 12a of the variable limiter 12 stored in the limit range storage 17 and an example of distribution pattern data of the distributor 13b of the control signal synthesizer 13.

In FIG. 29, (1) of the input data
(2) is data input from the input unit 17a of the restricted range storage unit 17. (1) and (2) of the stored data are
The data input from the input unit 17a is stored in the storage unit 17b.
Is the data to be stored and stored in Distributor 13 in FIG. 29
b is connected to the connection terminals 1b and 2b of the distributor 13b.
... Enter the number of the output terminal of the variable limiting means 12 connected to nb.

In processing s34 in FIG. 28, the output value of the combined signal limiting means 14 and the internal value of the control signal combining means 13 are read by the limited range setting means 15. Next, processing s5
In step 3, in step s7, the limiter 12a of the variable
Is determined to be necessary (yes), a new upper / lower limit value of the limiter 12a is selected with reference to the internal value of the control signal combining means 13.

FIG. 30 shows an example of a flow chart of the selection of the upper and lower limit values of each limiter 12a in the variable limiting means 12 performed in step s53.

The difference between FIG. 30 and the flowchart of the seventh embodiment shown in FIG.
This is the process. The operations in processes P1 to P4 and process P6 are almost the same as in the seventh embodiment.

First, when the process P1 is started, the process P9 is started.
The current internal value of the control signal synthesizing means 13 and the distributor 1
The connection state of 3b is displayed, and the routine goes to processing P2. Processing P51
Then, the upper and lower limit values and the distribution pattern corresponding to the selected pattern recognition number are selected from the upper and lower limit values for the limiter 12a and the distribution pattern of the distributor 13b, which are stored in a plurality of patterns in the storage unit 17b. Then, the upper and lower limit values set in the limiter 12a and the distribution pattern set in the distributor 13b are passed to the limit range setting means 15, and the routine goes to a process P6. In the process P6, the process s53 in the flowchart in FIG. 28 ends, and the process proceeds to the process s61.

In the process s61 in FIG. 28, the upper and lower limit values selected in the process s53 and the distribution pattern of the distributor 13b are changed to the new designated value of each limiter 12a of the variable limiter 12 and the distributor 13b of the control signal synthesizer 13. Is sent to the variable limiting means 12 and the control signal synthesizing means 13 as a new designated value of. As a result, in the variable limiter 12, the upper and lower limits of each limiter 12a are set to
Then, the connection state of the distributor 13b is changed to the limited range setting means 1
5 is set to the new specified value. Process s61
Is completed, the process proceeds to step s98.

In the process s98, a case where a command to stop the process of the limit range setting means 15 is issued (Yes) is given, and a case where the process of the limit range setting means 15 is continued without the stop command is given (No). If (No) is given, process
It returns to the process of 34. When (yes) is given, processing s99
Then, the processing of the limit range setting means 15 is stopped.

As described above, according to the ninth embodiment, the internal value state of the control signal synthesizing means 13 is displayed, so that the operator can visually recognize the internal value state of the control signal synthesizing means 13 and display it. For reference, the upper and lower limit of each limiter 12a can be easily selected from a plurality of patterns stored in advance in the limited range storage unit 17 to change the upper and lower limit of each limiter 12a.

FIG. 31 is a block diagram of a power system stabilizing apparatus according to a tenth embodiment of the present invention.

In the figure, the control signal calculating means 3 and the power system equipment 4 are the same as those shown in FIG. The difference between the tenth embodiment and the block diagram of FIG. 2 showing the second embodiment is that the control signal determining means 11 is different from the variable limiting synthesizing means 120, the synthetic signal limiting means 14 and the limiting range setting means 15. Is to be composed.

The variable limit synthesizing means 120 comprises a plurality of limiters 120a and a plurality of adders 120b. The number of limiters 120a is a number smaller by one than the number of outputs of the control signal calculating means 3, and the number of adders 120b is also a number smaller by one than the number of outputs of the control signal calculating means 3.
For example, when the number of outputs of the control signal calculation means 3 is three, the number of limiters 120a is two and the number of adders 120b is two. The number of outputs of the control signal calculation means 3 is n.

Next, the operation of the tenth embodiment will be described. The operation of the same part as that of the second embodiment is almost the same as that of the above-described embodiment, and the description is omitted.

First, the output of the control signal calculating means 3 and the output of the limiting range setting means 15 are input to the variable limit synthesizing means 120. The restriction range setting means 15 receives a plurality of internal values of the variable restriction composition means 120 and outputs the set value of the restriction range to the variable restriction composition means 120. The combined signal limiting unit 14 receives the output of the variable limiting combining unit 120 and outputs a control signal to the power system equipment 4.

Next, the variable limit synthesizing means 120 limits the output of the control signal calculating means 3 having the lowest priority (the n-th priority number) in the (n-1) -th limiter 120a. The (n-1) th adder 120b adds the output of the (n-1) th limiter 120a and the output of the control signal calculating means 3 having the (n-1) th highest priority.
Combine.

Next, the output of the (n-1) th adder 120b is limited by the (n-2) th limiter 120a. The (n-2) th adder 120b adds and combines the output of the (n-2) th limiter 120a and the output of the control signal calculating means 3 having the (n-2) th highest priority.

In the same manner, the first adder 1
In step 20b, the output of the first limiter 120a and the output of the control signal calculation means 3 having the highest priority (the first priority number) are added and combined. The output of the first adder is the output of the variable limit combining means 120. In addition, each limiter 12
The upper and lower limit values of 0a are changed by the output value of the limit range setting means 15. The combined signal limiting means 14 includes one limiter 14a, and the limiter 14a limits the input value (control signal) of the power system equipment 4. In general, since the control signal to the power system equipment 4 is an operation amount of the power system equipment 4, there is an upper limit value and a lower limit value, and the limiter 1
An upper limit and a lower limit are set in 4a.

Next, the restricted range setting means 15 of the tenth embodiment executes the processing shown in FIG.

First, the restriction range setting means 15 is activated in step s1. Next, in step s2, the upper and lower limit values of each limiter 120a of the variable limit synthesizing unit 120 set and stored in the limit range setting unit 15 are changed.
Sent to Then, the variable limit synthesizing unit 120 sets the upper and lower limit values of the limiter 120a to the values sent from the variable limit synthesizing unit 120. The upper and lower limits of the limiter 14a of the combined signal limiting means 14 are set to the upper and lower limits set and stored in the combined signal limiting means 14.

Next, in step s35, the limit range setting means 1
5 reads the internal value of the variable limit synthesizing means 120. For reading the internal value of the variable restriction synthesizing means 120, operation permission (Yes) is given according to the operation interval time of the process s35 set in advance in the process s4, and the process proceeds to the next process.
If the elapsed time from the previous operation permission (Yes) is shorter than the set operation interval time, the operation permission is not given (No), and the process returns to the processing s35 again in the determination of No. If the operation permission (Yes) is given in the process s4, the upper and lower limit values of each limiter 120a of the variable limit synthesizing means 120 are calculated in the process s54.

FIG. 33 is a flow chart of the calculation of the upper and lower limit values of each limiter 120a in the variable limit synthesizing means 120 performed in step s54.

Here, FIG. 33 shows a case where the number of output signals of the control signal calculation means 3 is n and the priority order j is j (j = 1,.
, N−1) is the value of the output signal Xj. For the adder 120b to which the j-th priority output signal of the control signal calculation means 3 is input, the upper limit value of the limiter 120a that provides another input is MAXj, and the lower limit value is MINj.
And Also, the limiter 14 in the combined signal limiting means 14
The upper limit of a is Mx, and the lower limit is Mn. Mx ', M
n 'is an internal variable.

In FIG. 33, when the calculation is started in process R1, in process R21, 1 is substituted for j, Mx 'is substituted for Mx, and Mn is substituted for Mn'. Next, in process R31, the upper limit value MAXj of the limiter 120a paired with the j-th output signal of the control signal calculating means 3 is calculated as the larger value of (Mx'-Xj) and 0, and the lower limit value MINj is calculated as the smaller value of (Mn'-Xj) and 0.

Next, in a process R41, the count value j is compared with the number n of output signals, and if j <(n-1), the process R5
If 1 = j = (n-1), the calculation ends in process R7.
In the process R51, MAXj is substituted for the internal variable Mx 'and MINj is substituted for Mn'. Subsequently, j is added to (j
+1) is assigned. When the process R61 ends, the process moves to a process R31, and the above flow is repeated until j = (n-1). When j = (n-1), the processing R7
The operation of the flowchart in FIG.
The process s54 in 2 ends.

Subsequently, in step s62 in FIG. 32, the upper and lower limit values of the limiters 120a of the variable limit synthesizing means 120 are determined by the upper and lower limit values MAXj, MIN calculated in step s54.
j (j = 1,..., n−1) and the process s98
Move to In the process s98, a case where a stop command of the process of the limit range setting unit 15 is output (Yes) is given, and a case where there is no stop command and the process of the limit range setting unit 15 is continued (No) is given. When (No) is given, the process returns to step s3. If (yes) is given, the process proceeds to step s99, and the process of the restriction range setting unit 15 is stopped.

As described above, according to the tenth embodiment, the upper limit value and the lower limit value of the limiter 120a of the corresponding variable limit synthesizing unit 120 decrease as the output of the control signal calculating unit 3 having a lower priority order increases. Therefore, the output of the variable limit synthesizing unit 120 can be distributed according to the priority of each output of the control signal calculating unit 3 within a range not exceeding the upper and lower limit values of the limiter 14a. The priority order can be considered for the control purpose of the corresponding power system equipment 4, and the output of the control signal calculating means 3 having a higher priority level can achieve the designed control effect. Further, the number of limiters 120a of the variable limit synthesizing means 120 to be set is one less than the number of outputs of the control signal calculating means 3, so that the amount of calculation in the control signal determining means 11 and the storage capacity required for the calculation are reduced. Can be done.

FIG. 34 is a block diagram of a power system stabilizing apparatus according to another embodiment of the tenth embodiment. The difference between FIG. 34 and the block diagram of the tenth embodiment of FIG. 31 is that the internal value of the variable limit synthesizing unit 120 and the output of the synthetic signal limiting unit 14 are input to the limiting range setting unit 15. It is.

Next, the operation of the present embodiment will be described. The description of the operation of the same parts as in the tenth embodiment is omitted.

FIG. 35 is a flow chart showing the operation of the control signal determining means 11 of the embodiment shown in FIG. The difference between FIG. 34 and the flowchart of the tenth embodiment in FIG. 32 is the presence or absence of the process s71.

In step s4 in FIG. 35, when the operation of the limited range setting means 15 is permitted (Yes), the process proceeds to step s71.
In process s71, the combined signal limiting unit 14 compares the output Y of the limiter 14a with the upper limit Mx and the lower limit Mn of the limiter 14a, and if Mn ≦ Y ≦ Mx, the process s71.
At 71, a signal representing (No) is output, and Y <M
If n, Y> Mx, a signal representing (yes) is sent to the limit range setting means 15. If it is determined in step s71 (No) that the change of the limiter 120a of the variable limit synthesizing unit 120 is unnecessary, the process proceeds to step s35. If (Yes), it is determined that the limiter 120a of the variable limit synthesizing unit 120 needs to be changed. Moving to step s54, new upper and lower limit values of the limiter 120a are calculated.

As described above, according to the present embodiment, the calculation of the upper and lower limit values of each limiter 120an of the variable limit combining means 120 is performed only when the output of the variable limit combining means 120 is limited by the combined signal limiting means 14. As a result, it is possible to reduce the number of calculation processes at all times.

FIG. 36 is a block diagram of an electric power system stabilizing apparatus according to an eleventh embodiment of the present invention. FIG.
31 differs from the block diagram of the tenth embodiment shown in FIG. 31 in the presence / absence of the priority order setting means 16 and the presence / absence of the signal switch 120c in the variable restriction combining means 120.
The priority order setting means 16 includes an input means 16a.

Next, the operation of the eleventh embodiment will be described. The description of the operation of the same part as that of the tenth embodiment will be omitted.

First, the priority setting means 16 can input the priority of each output of the control signal calculating means 3 by the input means 16a, and can save the input data. The output of the priority setting means 16 is sent to the restricted range setting means 15. The priority of each output of the control signal calculation means 3 is changed from the restriction range setting means 15 to the variable restriction synthesis means 1.
It is also sent to the 20 signal exchangers 120c. The signal exchanger 120c of the variable limit synthesizing unit 120 receives each output of the control signal calculating unit 3 and compares and compares each signal according to the priority of each output of the control signal calculating unit 3 given from the limit range setting unit 15. Output.

Restricted range setting means 15 of the eleventh embodiment
37 is shown in FIG. In addition, processing s1
The processing s62 is the same as that of the tenth embodiment in FIG. However, the process s1 also includes the activation of the priority setting unit 16.

In the process s4, the restriction range setting means 15
When the operation permission is issued (Yes), the process proceeds to the process s81. In the process s81, the data indicating the priority of the control signal calculating means 3 stored in the priority setting means 16 is read by the limited range setting means 15. FIG.
Shows a detailed flowchart example of the process s81. When activated in the process T1 in FIG. 38, the limit range setting means 15 reads the priority of each output of the control signal calculating means 3 which is input to and stored in the priority setting means 16 in the process T2.

The input of the priority is independent of the flow chart shown in FIG. 37, and the input means 16a included in the priority setting means 16 is used regardless of which process in the flow chart of FIG. Priority input is possible. When each priority is input by the input means 16a, each priority stored in the priority setting means 16 becomes
Replace with the entered value.

Here, the priorities are ranked from the highest priority to the first priority.
2, 3,... Are given. For example, when there are three outputs of the control signal calculating means 3, and the respective outputs are named A, B, and C for convenience, when the outputs are given as A-2, B-1, and C-3, the output priority is B , A, and C in that order. Next, in process T3, each priority stored in the restriction range setting means 15 is compared with the priority read from the priority setting means 16, and if there is a difference (Yes), it is determined that the priority has been changed. Move to T4. If there is no difference (No)
Moves to the processing T5.

In the process T4, each priority stored in the limit range setting means 15 is changed to the value read from the priority setting means 16, and the process proceeds to a process T6. In the process T6, the limit range setting means 15 sends the new priority value of each output of the control signal calculation means 3 to the signal exchanger 120c of the variable limit synthesis means 120. The signal exchanger 120c of the variable limit synthesizing unit 120 rearranges and outputs the outputs of the control signal calculating unit 3 according to the new priority, and proceeds to processing T5. Therefore, the priority setting change flow ends in process T5, and process s81 in the flowchart of FIG. 37 ends.
Move to processing s54.

As described above, according to the eleventh embodiment, the priority order can be changed even while the control signal determination means 11 is operating, so that the power system stabilizing device can be appropriately changed without stopping the power system stabilizing device. Priority can be set according to the situation.

FIG. 39 is a block diagram showing a power system stabilizer according to another embodiment of the eleventh embodiment of the present invention. The difference between the configuration diagrams of the eleventh embodiment shown in FIGS. 39 and 36 is that the internal range of the variable limit synthesizing unit 120, the output value of the synthesized signal That is to input the output.

Next, the operation of the present embodiment will be described. The description of the operation of the same part as that of the eleventh embodiment is omitted.

FIG. 40 shows a flowchart of the restricted range setting means 15 according to another embodiment of the eleventh embodiment.
The processes s1 to s81 have the same operations and functions as the flowcharts shown in FIGS. 32, 35, and 37.

As described above, according to the present embodiment, only when the output of control signal synthesizing means 13 is limited by synthesized signal limiting means 14, each limiter 1 of variable limiting synthesizing means 120
Since the calculation of the upper and lower limit values is performed, the calculation processing at all times can be reduced. Since the priority can be changed even while the control signal determining means 11 is operating, it is possible to appropriately set the priority according to the state of the power system without stopping the power system stabilizing device. Further, when the output of the variable limit synthesizing unit 120 is limited by the synthesizing signal limiting unit 14, the priority can be appropriately changed by the input unit 16 a of the priority order setting unit 16, and the input range of the power system equipment 4 can be changed. Thus, the priority can be set efficiently.

FIG. 41 is a block diagram of a power system stabilizing apparatus according to a twelfth embodiment of the present invention. In FIG. 41, the control signal determining means 11 is composed of a variable limiting means 12, a control signal combining means 13, a combined signal limiting means 14, a limiting range setting means 15, and an effective value calculating means 18.

The variable limiting means 12 includes a plurality of limiters 12.
a, and the control signal synthesizing means 13 is formed by an adder 13a. The combined signal limiting means 14 is composed of one limiter 14a. FIG. 41 is a configuration diagram of the power system stabilizing device in a case where the effective value calculating unit 18 is added to the power system stabilizing device of the fourth embodiment of FIG.

Next, the operation of the twelfth embodiment will be described. Note that the variable limiting means 12 and the control signal synthesizing means 1
3 and the operation of the combined signal restricting means 14 are the same as those of the other embodiments of the second to tenth embodiments, and therefore the description thereof is omitted.

The effective value calculating means 18 outputs the output value of the variable limiting means 12 of the second to ninth embodiments or the control signal synthesizing means 13 of the second to ninth embodiments. Internal value, or the tenth to first embodiments
Variable limit synthesizing means 12 of another embodiment of one embodiment
It calculates the internal value of 0 or the effective value of the output value of the combined signal limiting means 14 of the other embodiments of the second to eleventh embodiments and outputs it to the limiting range setting means 15.
Here, the function of the effective value calculating means 18 is the same as that of a known effective value detecting device, and calculates and outputs an effective value of an input signal at a set cycle set in the effective value detecting device. .

Note that the number of input signals to the effective value calculating means 18 is limited by the limit range setting means 1 in each embodiment.
5 has the same number of input signals as the number of input signals and outputs the same number of input signals, but the effective value calculating means 18 for making the output signal of the variable limiting means 12 an effective value and the combined signal limiting means 14 Effective value calculating means 18 for converting an output signal into an effective value
May be installed respectively. The method of calculating the effective value at the set cycle is the same as that of the conventional effective value detector or detecting means, and thus the description is omitted.

When the effective value calculating means 18 is provided in the fourth embodiment shown in FIG. 41, each signal of the output of the variable limiting means 12 and the output of the combined signal limiting means 14 is And outputs it to the limit range setting means 15.

In the present embodiment, the input of the limit range setting means 15 is an effective value, but the operation of the limit range setting means 15 is different from that of the second to eleventh embodiments by the other embodiments. This is almost the same as the embodiment shown.

As described above, according to the twelfth embodiment, the input signal of the limit range setting means 15 can be set to an effective value, and the change amount of the input signal of the limit range setting means 15 with respect to a certain time can be reduced. Therefore, the change in the upper and lower limit values of the limiter 12a of the variable limiting means 12 can be reduced. In particular, when the output of the control signal calculation means 3 is a periodic signal having a constant amplitude, the effective value is constant, so that it is not necessary to change the upper and lower limits of the limiter 12a, which is indispensable when an instantaneous value is input. Becomes Further, the limit range setting means 15
Becomes an effective value, the time change rate of the input signal becomes smaller as compared with the case of the instantaneous value.
The execution calculation time of each function of the limited range setting means 15 in the other embodiments of the thirteenth to eleventh embodiments can be extended.

In this embodiment, the case where the effective value is used has been described. However, a device which detects and outputs the maximum value or the minimum value of the input signal at a specific time period is output. The same effects as in the twelfth embodiment can be obtained by using instead of.

FIG. 42 is a configuration diagram of a power system stabilizing apparatus showing a thirteenth embodiment of the present invention.

The thirteenth embodiment is limited to the other embodiments of the second to sixth embodiments, or the other embodiments of the tenth to eleventh embodiments. It is characterized in that upper and lower limit value adjusting means 19 is provided at the subsequent stage of the setting means 15.

FIG. 42 shows a power system stabilizing apparatus in which upper and lower limit value adjusting means 19 are added to control signal determining means 11 in the power system stabilizing apparatus according to the tenth embodiment of FIG. It is a block block diagram.

In the block diagram of the electric power system stabilizing device shown in FIG. 42, the output of the limit range setting means 15 is input to the upper / lower limit value adjusting means 19, and the output of the upper / lower limit value adjusting means 19 is sent to the variable limit synthesizing means 120. Has been output.

FIG. 43 shows a flowchart of the control signal determining means 11.

Note that processing s1, processing s2, processing s35,
Processing s4, processing s54, and processing s62 correspond to the tenth processing in FIG.
It is almost the same as that of the embodiment. However, processing s1
Includes activation of the upper and lower limit adjusting means 19.

In FIG. 43, the upper and lower limit values of the respective limiters 120a of the variable limit synthesizing means 120 calculated in the process s54 are sent to the upper and lower limit value adjusting means 19 in the process s11. Adjustment calculation of the upper and lower limits is performed.

FIG. 44 shows a flowchart of the calculation of the adjustment of the upper and lower limit values for each limiter 120a of the variable limit synthesizing means 120 in the upper and lower limit value adjusting means 19.

In FIG. 44, the number of each limiter 120a of the variable limit synthesizing means 120 is m. Also, the k-th output (k = 1,...,
The upper limit value for the limiter 120a in m) is MAXk and the lower limit value is MINk. However, the limiter 120a corresponding to the output of the control signal calculating means 3 having the highest priority is the first (k = 1). MA is an internal variable.

First, when the calculation is started in process q1, 2 is substituted for k in process q2. Next, in process q3,
Upper limit value MAXk and lower limit value M of k-th limiter 120a
The absolute values of INk are compared, and the smaller absolute value is substituted for MA. Next, in process q4, MA is substituted for the upper limit value MAXk and -MA is substituted for the lower limit value MINk,
The upper and lower limits of the k-th limiter 120a are adjusted. Next, in step q5, the counter value k is compared with the limiter number m. If k <m, the process proceeds to step q6, and if k = m, the calculation ends in step q7.

In the process q6, (k + 1) is substituted for k. Next, the process proceeds to processing q3, and the above flow is repeated until k = m. When k = m, processing q7 in FIG.
The operation of the flowchart of FIG.
1 ends. In the process s62 in FIG. 43, the upper and lower limit values MAXk and MINk obtained by adjusting the upper and lower limit values of each limiter 120a of the variable limit synthesizing unit 120 in the process s11.
(K = 1,..., K) and the process returns to the process s35.

As described above, according to the thirteenth embodiment, the upper limit value and the lower limit value of the limiter 120a corresponding to the end of the control signal calculating means 3 having the second or lower priority among the limiters 120a of the variable limit synthesizing means 120. Positive and negative values having absolute values equal to each other by the upper and lower limit adjusting means 19,
Alternatively, both are set to a value of 0. Therefore, by adding the upper and lower limit value adjusting means 19, the control signal calculating means 3
Even if the end value of the control signal is oscillating about 0, a uniform control result can be obtained regardless of whether the output value of the control signal calculation means 3 is positive or negative. Can be improved.

Next, a fourteenth embodiment of the present invention will be described.

The fourteenth embodiment is different from the other embodiments of the second to sixth embodiments, the tenth embodiment, or the other embodiment of the eleventh embodiment. It is characterized in that upper and lower limit value adjusting means 19 is provided at the subsequent stage of the limiting range setting means 15.

The processing of the restricted range setting means 15 of the fourteenth embodiment is almost the same except for the processing S11 in FIG.

In FIG. 45, the number of each limiter 120a of the variable limit synthesizing means 120 is m. Also, the k-th (k = 1,..., M) output from the restriction range setting means 15
Upper limit MAXk and lower limit M for the limiter 120a
INk. However, the limiter 120a corresponding to the output of the control signal calculating means 3 having the highest priority is the first (k = 1). MA is an internal variable.

First, when the calculation is started in process q1, 2 is substituted for k in process q2. Next, in process q5, the absolute value of both the upper limit value MAXk and the lower limit value MINk of the k-th limiter 120a is compared. If the absolute value of MAXk is larger than the absolute value of MINk, the process proceeds to process q9.
If smaller or equal, the process proceeds to processing q10. In processing q9, M
The value obtained by multiplying INk by -1 is substituted for the upper limit value MAXk,
Move to processing q5. In process q10, a value obtained by multiplying MAXk by -1 is substituted for the lower limit value MINk, and the process proceeds to process q5.
For example, the absolute values of the upper limit (10) and the lower limit (-5) are compared, and if the absolute value of the upper limit is larger than the absolute value of the lower limit, the lower limit (-5) of the minus sign is set. The value obtained by multiplying the sign is set as a new upper limit (5), and the lower limit (-
5) is used as a new lower limit as it is. When the absolute value of the upper limit (5) is smaller than the absolute value of the lower limit (-10), a value obtained by multiplying the upper limit (5) by a minus sign is set as a new lower limit (-5). The value is used as the new upper limit (5) as it is.

Next, a comparison with the count number m is performed in processing q5, and if k <m in this comparison, the calculation ends in processing q7.

On the other hand, in the process q6, (k + 1) is substituted for k. When the process q6 is completed, the process moves to a process q3, and the above flow is repeated until k = m. When this processing becomes k = m, the operation of the flowchart in FIG. 45 ends in processing q7, and processing s11 in FIG. 43 ends.

In the process s62 in FIG. 43, the upper and lower limit values of each limiter 120a of the variable limit synthesizing means 120 are determined by the process s62.
11, the upper and lower limit values MAXk, MINk (k =
1,..., K), and returns to processing s35.

As described above, according to the fourteenth embodiment, in addition to the effects of the thirteenth embodiment, the upper and lower limit value adjusting means 19
Each limiter 120a of the variable limit combining means 120 in
In the adjustment calculation of the upper and lower limit values, the internal variables become unnecessary, and the correction of the upper and lower limit values may be performed by only an assignment operation to one of them. The storage capacity can be reduced.

The thirteenth embodiment or the first
In the embodiment corresponding to the fourth embodiment, the case where the upper / lower limit value adjusting means 19 is provided after the limit range setting means 15 has been described, but the upper / lower limit value adjusting means 19 is provided inside the limit range setting means 15. The same effects as those of the thirteenth embodiment or the fourteenth embodiment can be obtained also in the case of providing.

For example, FIG. 3 corresponding to the tenth embodiment
Explaining with reference to the flowchart of FIG. 2, processing s5 in FIG.
4, the calculation of the upper and lower limit values of the limiter 120a of the variable limit synthesizing unit 120 described in the flowchart of FIG. 33 and the upper limit value of the limiter 120a of the variable limit synthesizing unit 120 described in the flowchart of FIG. The same effect as in the thirteenth embodiment or the fourteenth embodiment can be obtained even when the adjustment calculation of the lower limit is executed at the same time.

Next, a fifteenth embodiment will be described as applied to the electric power system stabilizing apparatus shown in the second embodiment.

The computer for realizing the power system stabilizing device of the second embodiment is a program for realizing the power system stabilizing device of the second embodiment recorded on a recording medium such as a magnetic disk, an optical disk, and a semiconductor memory. Is read, and the operation is controlled by this program, whereby the processing shown in the second embodiment is executed and functions as the power system stabilizing device of the second embodiment.

The first embodiment is not limited to the second embodiment.
A processing program for implementing the embodiment and the third to fourteenth embodiments can be stored in a storage medium so that each function can be exhibited.

[0211]

As described above, according to the first aspect of the present invention, the plurality of control signals of the control signal calculating means for calculating the control signal of the power system equipment are assigned according to the priority within a predetermined range of the power system equipment. Since the control signals of the control signal calculating means are combined in the control signal determining means so that the control signals are distributed, a control signal having a higher priority can achieve a designed control effect.

According to the second aspect of the present invention, the upper / lower limit setting limit range of the variable limiter is set so that each control signal of the control signal calculator is distributed according to the priority order. Since the setting is made based on the priority and the output of the variable limiter, the output of the control signal calculator having the higher priority can achieve the designed control effect.

According to the third aspect of the present invention, the upper and lower limit setting limit range of the variable limiter is controlled so that each control signal of the control signal calculator is distributed according to the priority within the upper and lower limit range. Since the priority is set based on the priority of each output of the means and the internal value of the control signal synthesizing means, the control signal of the control signal calculating means having a higher priority can obtain the designed control effect.

According to the present invention, the control range setting means sets the upper and lower limits of the variable limiting means based on the output of the variable limiting means only when the output of the combined signal limiting means is limited. Since the calculation of the limit range is performed,
The amount of calculation at all times can be reduced.

According to the fifth aspect of the present invention, only when the output is limited by the combined signal limiting means, the limited range setting means sets the variable limit means based on the internal value of the control signal combining means. Since the calculation of the lower limit setting limit range is performed, the amount of calculation at all times can be reduced.

Further, according to the invention of claim 6, since the priority order of each control signal can be set to a predetermined value, it is possible to appropriately cope with the situation of the power system.

According to the seventh aspect of the present invention, when the output is restricted by the combined signal restricting means, the upper and lower limit values of the variable restricting means are selected from the upper and lower limit setting restricted ranges which are stored in advance. Then, since the upper and lower limits of the variable limiter are changed, the control signal calculator having the higher priority can obtain the control effect as designed.

According to the invention of claim 8, when the output of the combined signal limiting means is limited, the upper and lower limits of the variable limiting means are stored in advance in accordance with the output state of the variable limiting means. Since the upper and lower limit values can be selected from the upper and lower limit setting limit ranges, the upper and lower limit values of the variable limiter can be appropriately corresponded to the power system status.

According to the ninth aspect of the present invention, when the output is limited by the combined signal limiting means, the internal state of the control signal combining means and the upper and lower limit setting limit ranges of the variable limiting means are stored in advance. Therefore, the upper and lower limit setting limit range of the variable limiter can be appropriately selected in accordance with the situation of the power system.

According to the tenth aspect of the present invention, the upper and lower limit setting of the variable limit synthesizing means is performed so that each control signal of the control signal calculating means is distributed according to the priority within the upper and lower limit setting limit range of the power system equipment. Since the limit range is calculated based on the priority of each output of the control signal calculating means and the internal value of the variable limit synthesizing means, the control signal of the control signal calculating means having a higher priority can obtain the designed control effect. Further, only when the output is limited by the combined signal limiting means, the upper and lower limit setting limited range is calculated, so that the amount of calculation at all times can be reduced.

Further, according to the eleventh aspect of the present invention, the priority corresponding to each control signal of the control signal calculating means performed by the priority setting means is set to the internal value of the variable limit synthesizing means or the internal value of the variable limiting synthesizing means. Since it is determined based on the synthesis control signal of the synthesis signal limiting means,
The priority of each output of the control signal calculation means can be set.

According to the twelfth aspect of the present invention, the effective value of the output value of the variable limiting means, the internal value of the control signal combining means, the internal value of the variable limiting combining means, and the output value of the combined signal limiting means are calculated. Since the effective value calculation means is provided and the upper and lower limit setting limit range is determined by the effective value by the effective value calculation means,
The input signal of the limiting range setting means is stabilized, and the change in the upper and lower limit setting limiting range of the variable limiting means or the variable limiting combining means can be reduced.

According to the thirteenth aspect of the present invention, the upper and lower limit value adjusting means is provided to adjust the upper and lower limit values of the upper and lower limit setting limit ranges to positive and negative values having the same absolute value. Even when each of the control signals is oscillating about zero, a uniform control effect can be obtained and the convergence is improved.

Further, according to the fourteenth aspect of the present invention, when determining the upper / lower limit setting limit range of the variable limiting means or the variable limiting combining means, only the assignment operation to one of the upper limit value and the lower limit value is required. The amount of calculation in the upper and lower limit adjusting means and the storage capacity required for the calculation can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a power system stabilizing device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a power system stabilizing device according to a second embodiment of the present invention.

FIG. 3 is a flowchart showing a process of a limit range setting means provided in the electric power system stabilizing device of FIG. 2;

FIG. 4 is a flowchart showing details of a process s5 in the flowchart of FIG. 3;

FIG. 5 is a configuration diagram of a power system stabilizing device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing a process of a limit range setting means provided in the electric power system stabilizing device of FIG. 5;

FIG. 7 is a configuration diagram of a power system stabilizing device according to a fourth embodiment of the present invention.

FIG. 8 is a flowchart showing a process of a limit range setting means provided in the electric power system stabilizing device of FIG. 7;

FIG. 9 is a configuration diagram of a power system stabilizing apparatus according to a fifth embodiment of the present invention.

FIG. 10 is a flowchart illustrating a process of a limit range setting unit provided in the power system stabilizing device of FIG. 9;

FIG. 11 is a configuration diagram of a power system stabilizing device according to a sixth embodiment of the present invention.

FIG. 12 is a flowchart showing a process of a limit range setting unit provided in the power system stabilizing device of FIG. 11;

FIG. 13 shows a process s8 in the flowchart shown in FIG.
6 is a flowchart showing details of the process.

FIG. 14 is a configuration diagram of a power system stabilizing apparatus showing another embodiment of the sixth embodiment of the present invention.

FIG. 15 is a flowchart illustrating a process of a limit range setting unit provided in the power system stabilizing device of FIG. 14;

FIG. 16 is a configuration diagram of a power system stabilizing device showing still another embodiment of the sixth embodiment of the present invention.

FIG. 17 is a flowchart illustrating a process of a limit range setting unit provided in the power system stabilizing device of FIG. 16;

FIG. 18 is a configuration diagram of a power system stabilizing apparatus showing still another embodiment of the sixth embodiment of the present invention.

FIG. 19 is a flowchart illustrating a process of a limit range setting unit provided in the power system stabilizing device of FIG. 18;

FIG. 20 is a configuration diagram of a power system stabilizing apparatus according to a seventh embodiment of the present invention.

FIG. 21 is a flowchart illustrating a process of a limit range setting unit provided in the power system stabilizing device of FIG. 20;

FIG. 22 is an explanatory diagram showing details of a process s51 in the flowchart of FIG. 21;

FIG. 23 is a flowchart showing a process of variable limiting means provided in the power system stabilizing device of FIG. 20.

FIG. 24 is a configuration diagram of a power system stabilizing device showing an eighth embodiment of the present invention.

FIG. 25 is a flowchart showing a process of a limit range setting unit provided in the power system stabilizing device of FIG. 24;

FIG. 26 is a flowchart showing a process of variable limiting means provided in the power system stabilizing device of FIG. 24.

FIG. 27 is a configuration diagram of a power system stabilizing device showing a ninth embodiment of the present invention.

FIG. 28 is a flowchart showing a process of a limit range setting unit provided in the power system stabilizing device of FIG. 27.

FIG. 29 is an explanatory diagram showing details of a process s53 in the flowchart of FIG. 28;

FIG. 30 is a flowchart showing a process of variable limiting means provided in the power system stabilizing device of FIG. 27.

FIG. 31 is a configuration diagram of a power system stabilizing apparatus according to a tenth embodiment of the present invention.

FIG. 32 is a flowchart showing a process of a limit range setting unit provided in the power system stabilizing device of FIG. 31.

FIG. 33 is a flowchart showing a process of a variable limiting unit provided in the power system stabilizing device of FIG. 31.

FIG. 34 is a configuration diagram of a power system stabilizing device showing another embodiment of the tenth embodiment of the present invention.

FIG. 35 is a flowchart showing a process of a limit range setting means provided in the power system stabilizing device of FIG. 34;

FIG. 36 is a configuration diagram of a power system stabilizing device showing an eleventh embodiment of the present invention.

FIG. 37 is a flowchart showing a process of a limit range setting means provided in the power system stabilizing device of FIG. 36.

FIG. 38 is a flowchart showing details of a process s81 in the flowchart of FIG. 37.

FIG. 39 is a configuration diagram of a power system stabilizing device showing another embodiment of the eleventh embodiment of the present invention.

FIG. 40 is a flowchart showing a process of a limit range setting means provided in the power system stabilizing device of FIG. 39.

FIG. 41 is a configuration diagram of a power system stabilizing device showing a twelfth embodiment of the present invention.

FIG. 42 is a configuration diagram of a power system stabilizing device showing a thirteenth embodiment of the present invention.

FIG. 43 is a flowchart showing a process of a limit range setting unit provided in the power system stabilizing device of FIG. 42.

FIG. 44 is a flowchart showing processing of upper and lower limit value adjusting means provided in the electric power system stabilizing device of FIG. 42;

FIG. 45 is a flowchart showing processing by upper / lower limit adjusting means according to the fourteenth embodiment of the present invention.

FIG. 46 is a configuration diagram showing a conventional power system stabilization device.

FIG. 47 is a configuration example of a power system stabilization device corresponding to FIG. 46.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 power system 2 power system stabilizing device 3 control signal calculating means 4 power system equipment 5, 120 b, 13 a adder 6, 120 a, 14 a limiter 11 control signal determining means 12 variable limiting means 12 a limiter 120 variable limiting combining means 120 c signal exchange 13 control signal synthesizing means 13b distributor 14 synthesized signal limiting means 15 limited range setting means 16 priority setting means 16a, 17a input means 17 limited range storing means 17b storing means 18 effective value calculating means 19 upper and lower limit adjusting means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuyuki Miyazaki 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant, Inc. Terms (reference) 5G066 AA03 AD01 AD06 AE09

Claims (15)

[Claims] A plurality of control signals output from a plurality of control signal calculation means for calculating a control signal are synthesized based on a detection signal obtained by detecting a state quantity of a power system, and the synthesized control signals are synthesized. In a power system stabilizing device for controlling a power system device by a control signal, a control signal determining unit that combines a plurality of control signals output from the control signal calculating unit in a predetermined range according to a priority order and outputs an obtained control signal. An electric power system stabilizing device characterized by comprising means. 2. The control signal determining means according to claim 1, wherein said control signal determining means limits each control signal corresponding to each predetermined upper / lower limit setting limit range set corresponding to each control signal output from said control signal calculating means. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means A combined signal limiting unit that outputs a limited combined control signal to the power system equipment by limiting a signal within a predetermined range, and according to each of the limited control signals output from the variable limiting unit and a predetermined priority order. 2. The power system stabilizing device according to claim 1, further comprising: a limit range setting unit that determines and sets each of the predetermined upper and lower limit setting limit ranges of the variable limit unit. 3. The control method according to claim 1, wherein said control signal determining means limits each control signal corresponding to each predetermined upper and lower limit setting limit range set corresponding to each control signal output from said control signal calculating means. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means Combining signal limiting means for limiting the signal to a predetermined range and outputting a limited combined control signal to the power system equipment; priority corresponding to each control signal output from the control signal calculating means; and the control The predetermined upper and lower limit setting limit ranges of the variable limiter so as to distribute the plurality of control signals within the predetermined range of the composite signal limiter based on an internal value of the signal synthesizer. Determined, characterized in that it comprises a limit range setting means for setting Claim 1 power system stabilizer according. 4. The control signal determining means restricts each control signal corresponding to each predetermined upper and lower limit setting restriction range set corresponding to each control signal output from the control signal calculating means. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means A combined signal limiting unit that outputs a limited combined control signal to the power system equipment by limiting a signal within a predetermined range; a priority order corresponding to each control signal output from the control signal calculating unit and the variable Before distributing the plurality of control signals within the predetermined range of the combined signal limiting unit based on the limited control signal of the limiting unit and the combined control signal of the control signal combining unit. Power system stabilizer of claim 1, wherein further comprising a restriction range setting means for setting and determining the respective predetermined upper and lower limit setting limit range of the variable restriction means. 5. The control method according to claim 1, wherein said control signal determining means restricts each control signal corresponding to each predetermined upper and lower limit setting restriction range set corresponding to each control signal output from said control signal calculating means. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means Combining signal limiting means for limiting the signal to a predetermined range and outputting a limited combined control signal to the power system equipment; priority corresponding to each control signal output from the control signal calculating means; and the control The variable limiting means for distributing the plurality of control signals within the predetermined range of the combined signal limiting means based on an internal value of the signal combining means and an output signal of the combined signal limiting means The power system stabilizer of claim 1, wherein further comprising a restriction range setting means for setting to determine each predetermined upper limit set limits. 6. The power system according to claim 1, further comprising a priority order setting unit that sets a priority order corresponding to each control signal output from the control signal calculation unit. Stabilizer. 7. The control signal determining means, wherein said control signal limiting means limits each control signal corresponding to each predetermined upper / lower limit setting limit range set corresponding to each control signal output from said control signal calculating means. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means Combining signal limiting means for limiting the signal to a predetermined range and outputting a limited combined control signal to the power system equipment; and predetermined upper and lower limit setting limiting ranges corresponding to the respective control signals of the control signal calculating means. A plurality of upper and lower limit setting limit ranges stored in the limit range storage unit in response to a synthesis control signal output from the synthesis signal limiting unit. Power system stabilizer of claim 1, wherein further comprising a restriction range setting means for selecting the upper and lower limit setting limits set to the variable restriction means. 8. The limiting control in which each control signal corresponding to each predetermined upper / lower limit setting limit range set corresponding to each control signal output from the control signal calculating means is limited. Variable limiting means for outputting a signal; control signal synthesizing means for synthesizing the respective limit control signals output from the variable limiting means to output a synthetic control signal; synthesizing control output from the control signal synthesizing means Combining signal limiting means for limiting the signal to a predetermined range and outputting a limited combined control signal to the power system equipment; and predetermined upper and lower limit setting limiting ranges corresponding to the respective control signals of the control signal calculating means. And a plurality of upper / lower limit setting systems stored in the limited range storage unit in accordance with the limit control signal of the variable limiter and the combined control signal of the combined signal limiting unit. Range power system stabilizer of claim 1, wherein further comprising a restriction range setting means for setting each predetermined upper limit set limits said variable restriction means to select from among. 9. The control signal determining means is capable of outputting a limited control signal by limiting to a predetermined upper / lower limit setting limited range set corresponding to each control signal output from the control signal calculating means. Variable limiting means for combining, limiting control signals output from the variable limiting means, a control signal combining means for outputting a combined control signal, and a combined control signal output from the control signal combining means in a predetermined range. A combined signal limiting means for outputting a combined control signal limited and restricted to the power system equipment, and a limited range for storing a predetermined upper and lower limit setting limited range corresponding to each control signal of the control signal calculating means. Storage means; and a predetermined upper limit from a plurality of upper / lower limit setting restriction ranges stored in the restriction range storage means according to the internal value of the control signal synthesizing means and the synthesis control signal of the synthesis signal limiting means. Power system stabilizer of claim 1, wherein further comprising a restriction range setting means for selecting a limited set limits set to the variable restriction means. 10. The control signal determining means restricts each control signal corresponding to each predetermined upper and lower limit setting restriction range set corresponding to each control signal output from the control signal calculating means, A variable limiting combining means for combining the respective limiting control signals and outputting the combined limiting control signal as a combined limiting control signal; and limiting the combined limiting control signal output from the variable limiting combining means to a predetermined range to form a limited combined control signal. Combined signal limiting means for outputting to the power system equipment, an internal value of the variable limiting combining means according to a priority corresponding to each control signal output from the control signal calculating means,
Alternatively, there is provided a limit range setting unit that determines and sets each of the upper and lower limit setting limit ranges of the variable limit synthesizing unit based on the internal value and the synthesis control signal of the synthesis signal limiting unit. The power system stabilizer according to claim 1. 11. The control signal determination means limits each control signal corresponding to each predetermined upper and lower limit setting restriction range set corresponding to each control signal output from the control signal calculation means, A variable limiting combining means for combining the respective limiting control signals and outputting the combined limiting control signal as a combined limiting control signal; and limiting the combined limiting control signal output from the variable limiting combining means to a predetermined range to form a limited combined control signal. Combined signal limiting means for outputting to the power system equipment; priority setting means for setting a priority corresponding to each control signal of the control signal calculating means; and corresponding to each control signal set by the priority setting means. The internal value of the variable limit synthesizing unit according to the priority order, or the variable limit synthesizing unit based on the internal value and the synthesis control signal of the synthetic signal limiting unit. Determining the upper and lower limit setting limits, the power system stabilizer according to claim 1, characterized in that it comprises a limit range setting means for setting. 12. The method according to claim 1, wherein said limiting control signal of said variable limiting means, an internal value of said control signal synthesizing means, an internal value of said variable limiting synthesizing means, and an effective value of a corresponding value of the output value of said synthetic signal limiting means for a certain period of time. An effective value calculating means for calculating a value is provided, and an upper and lower limit setting limit range corresponding to each control signal of the control signal calculating means is determined based on the obtained effective value. Item 12. An electric power system stabilizing device according to any one of Items 11. 13. An upper limit value and a lower limit value, which are upper and lower limit setting limit ranges output from the limit range setting means, are compared with each other, and an absolute value having a smaller absolute value is set as a new upper limit value. Upper and lower limit adjusting means for setting the variable limit means or the variable limit synthesizing means so that the absolute value of the upper and lower limit values is made equal to the lower limit value obtained by multiplying the new upper limit value by -1. The power system stabilizing device according to any one of claims 1 to 12, wherein: 14. An absolute value of an upper limit value is larger than an absolute value of a lower limit value by comparing absolute values of an upper limit value and a lower limit value as upper and lower limit setting limit ranges output from the limit range setting means. A first means for setting a value obtained by multiplying the lower limit of the-sign by the-sign as a new upper limit, and setting the lower limit as a new lower limit as it is, and an absolute value of the upper limit being an absolute value of the lower limit. If it is smaller, a value obtained by multiplying the upper limit by a minus sign is set as a new lower limit, and the upper limit is obtained as a new upper limit as it is by the first means or the second means. 2. An apparatus according to claim 1, further comprising upper / lower limit adjusting means for setting the upper and lower limits to the variable limiter or the variable limit synthesizer.
3. The electric power system stabilizing device according to any one of 2. 15. A control signal synthesized by combining a plurality of control signals output from a plurality of control signal calculation means for calculating a control signal based on a detection signal obtained by detecting a state quantity of a power system. In a recording medium for recording a processing program of a power system stabilizing device for controlling power system equipment, a plurality of control signals output from the control signal calculating means are combined so as to be distributed in a predetermined range according to priority. A recording medium for recording a processing program of an electric power system stabilizing device including a control signal determination unit that outputs a control signal obtained.