JP2003259555A - Device and program for voltage and reactive power monitoring control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain voltage and reactive power monitoring control corresponding to needs of an operator by reducing computer load and preventing complex reactions of voltage and reactive power adjusting apparatus on the site. <P>SOLUTION: A monitoring point deviation integrating means 15 integrates the deviation from an upper limit value and a lower limit value of a bus-bar voltage and a reactive power current which are monitoring object, from a system state obtained by a voltage system information obtaining means 11, and a deviation decision means 13 actuates a control amount calculating means 12 when the integrated value of the deviation amount exceeds a preset deviation threshold. The control amount calculating means 12 calculates control amounts for the voltage and reactive power adjusting apparatus 3 so as to make the bus-bar voltage and the reactive power current which are applicable for monitoring are within the allowable values, and outputs a command to the voltage and reactive power adjusting apparatus 3 through a command outputting means 14 and information transmitting devices 4c, 4d. Thus, a reaction to micro- disturbance can be restrained and control can be made even when the deviation continues for a short time at the time of generation of large deviations. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage reactive power control device and a voltage reactive power control program for performing an optimum command to a voltage reactive power adjusting device according to a voltage at a monitoring point of a power system and a deviation state of reactive power. Regarding

[0002]

2. Description of the Related Art Generally, in a power system, the reactive power of the power system changes and the voltage also changes depending on the state of the load. For this reason, the voltage and reactive power are adjusted when operating the power system. This adjustment of the voltage reactive power is performed by controlling the voltage reactive power adjusting devices (VQC devices) provided in the power system at a plurality of locations.

As a voltage reactive power adjusting device, a generator,
A load tapped transformer (LRT), a power capacitor (SC) that is a phase adjusting device, and a shunt reactor (ShR) are used. The adjustment by the generator is performed by the phase advancing operation or the phase retarding operation by the increase / decrease of the exciting current, and the load-time tapped transformer LRT is adjusted by switching the taps. Further, the power capacitor SC and the shunt reactor ShR are adjusted by turning on and off the device.

FIG. 13 is a block diagram of a conventional voltage reactive power monitoring and controlling apparatus 1. Various voltage reactive power regulating devices 3 are installed in the power system 2, and the operating state of the voltage reactive power regulating device 3 and the voltage and reactive power at each monitored target portion of the power system are transmitted via the information transmission devices 4a and 4b. And transmitted to the voltage reactive power monitoring control device 1.

The system information transmitted from the power system 2 is the power system information grasping means 1 of the voltage reactive power monitoring and control device 1.
1, and the state of the power system is determined by the power system information grasping means 11. The state of the electric power system determined by the electric power system information grasping unit 11 is the control amount calculating unit 1
Entered in 2.

On the other hand, the operation target value setting means 18 sets the operation target values of the bus voltage and the transmission line reactive power flow which are to be monitored by the voltage reactive power monitoring controller 1.
The control amount calculation means 12 calculates a control amount for the voltage reactive power adjusting device 3 provided at a plurality of locations in the power system so that the bus voltage to be monitored and the reactive power flow of the transmission line are within the predetermined range of the operation target value. . The control amount of each voltage reactive power adjusting device from the control amount calculating means 12 is output to the voltage reactive power adjusting device 3 of the electric power system 2 by the command output means 14 via the information transmission devices 4c and 4d.

FIG. 14 is a flow chart showing a procedure for calculating the control amount of each voltage reactive power adjusting device 3 in the control amount calculating means 12.

First, the electric power system information grasping means 11 fetches the electric power system information necessary for calculating the control amount. (S1) The voltage reactive power adjusting device 3 according to the imported power system information
The sensitivity coefficient S, which means the change of the voltage at the monitoring point and the reactive power flow with respect to the operation amount of, is calculated (S2).

Next, a linear programming problem is formulated and an objective function is created (S3). The objective function E is represented by the sum of squares of the voltage deviation at the monitoring point and the sum of squares of the reactive power flow deviation, and the deviation sum of squares is linearized to become equation (1).

[0010]

[Equation 1] However, C _k : Weighting coefficient of voltage deviation of monitoring point k C _l : Weighting coefficient of reactive power flow at monitoring point l V _k : Current voltage value of monitoring point k ΔV _k : Monitoring point that changes according to adjustment amount of adjusting device k voltage change amount V _refk : voltage setting value Q _{l at} monitoring point k: reactive power flow current value ΔQ _l at monitoring point l: reactive power change amount Q _{refl at} monitoring point l that changes depending on the adjustment amount of the adjusting device The reactive power setting value of the point l, the voltage change amount ΔV _k of the monitoring point k that changes depending on the adjustment amount of the adjusting device, and the reactive power change amount ΔQ _l of the monitoring point l that changes depending on the adjusting amount of the adjusting device are It is expressed by equations (2) and (3).

[0011]

[Equation 2] However, _{S kj:} adjusting equipment (generator) voltage sensitivity coefficient for the monitoring point k of j _{S miles:} Voltage sensitivity coefficient for the monitoring point k of the adjustment device (adjusting phase shifters) m _{S kn:} adjusting equipment (LRT) n Monitoring Voltage sensitivity coefficient S _lj for the point k: Reactive power sensitivity coefficient S _{lm of the} adjusting device (generator) j with respect to the monitoring point l: Reactive power sensitivity coefficient S _{ln of the} adjusting device ( _phaser ) m with respect to the monitoring point l: Adjusting device (LRT) n reactive power sensitivity coefficient for monitoring point l _{ΔQ Gj} : Control amount of adjustment device (generator) j _{ΔQ Cm} : Control amount of adjustment device ( _phaser ) m Δt _Tn : Adjustment device (LRT ) N control amount and the inequality constraint is as follows.

(A) Constraints on allowable upper and lower limits of monitoring point voltage

[Equation 3] (B) Upper and lower limit constraints on reactive power flow at the monitoring point

[Equation 4] (C) Upper and lower limits on the reactive power of the adjusting device (generator)

[Equation 5] (D) Terminal voltage upper / lower limit constraint of the adjusting device (generator)

[Equation 6] (E) Restriction on upper and lower limits of reactive power of adjusting device (phase adjuster)

[Equation 7] (F) Tap upper / lower limit constraint of adjusting device (LRT tap)

[Equation 8] Next, the formulated linear programming problem is solved by a linear programming algorithm (S4). A method for solving a formulated linear programming problem with a linear programming algorithm will be referred to as an LP method hereinafter.

The formulated linear programming problem is solved by the linear programming algorithm, and the obtained value is used as a command value to perform command value creation processing and output to the command output means 14 (S5). As a result, the voltage reactive power adjusting device 3 installed on the power system operates along the command value, so that the voltage at the monitoring point and the reactive power flow are maintained at the operation target value.

[0014]

However, in such a conventional voltage reactive power monitoring control device, in order to minimize the objective function in the calculation execution cycle, the control amount is always calculated and the command value is output. Become. In particular, solving the linear programming problem may increase the computer load. Further, the voltage reactive power adjusting device 3 is forced to make a complicated reaction.

Further, the device type of the voltage reactive power adjusting device 3 (for example, power capacitor SC, shunt reactor ShR).
Uneven distribution of command values may occur for the phase adjusters).

The object of the present invention is to reduce the computer load and prevent the complicated reaction of the on-site voltage and reactive power adjusting device, and to flexibly cope with the uneven distribution of the command value to the voltage and reactive power adjusting device. It is an object of the present invention to provide a voltage reactive power monitoring control device and a voltage reactive power monitoring control program that meet the needs of the user.

[0017]

According to a first aspect of the present invention, there is provided a voltage reactive power monitoring and control apparatus which detects a state quantity from a power system and inputs the state quantity into an electronic computer through an information transmission device to obtain system information of the power system. In the voltage reactive power monitoring control device that monitors and controls the magnitude of the bus voltage and the reactive power flow based on
A power system information grasping means for obtaining system information of the power system based on the state quantity transmitted through the information transmission device,
Monitoring point deviation amount integrating means for integrating deviation amounts from the upper limit value and the lower limit value of the bus voltage and reactive power flow to be monitored from the system state obtained by the voltage system information grasping means,
Deviation determination means for determining whether the deviation amount integrated value obtained by the monitoring point deviation amount integration means exceeds a preset deviation threshold value, and when the deviation judgment means determines that the deviation threshold value is deviated. In the control amount calculation means for calculating the control amount of the voltage reactive power adjusting device provided in a plurality of locations of the power system so that the bus voltage and the reactive power flow to be monitored fall within the allowable value, A command output means for outputting a command for the calculated control amount for the voltage reactive power adjusting device via the information transmission device is provided.

In the voltage reactive power monitoring and control apparatus according to the invention of claim 1, the monitoring point deviation amount integrating means determines the bus voltage and the reactive power flow to be monitored from the system state obtained by the voltage system information grasping means. The deviation amount from the upper limit value and the lower limit value is integrated, and the deviation determination means activates the control amount calculation means when the deviation amount integrated value exceeds a preset deviation threshold value. The control amount calculation means calculates the control amount of the voltage reactive power adjusting device provided at a plurality of points in the power system so that the bus voltage and the reactive power flow to be monitored fall within the allowable values when the start is applied, and a command is issued. A command is output to the voltage reactive power adjusting device via the output means and the information transmission device. As a result, it is possible to suppress the response to a minute disturbance, and when a large deviation occurs, control can be performed even if the deviation continues for a short time.

According to a second aspect of the present invention, in the voltage reactive power monitoring control apparatus according to the first aspect of the present invention, the monitoring points are grouped in advance in group units, and the monitoring point deviation amount integrated value by the monitoring point deviation amount integrating means is set. The group addition means for adding to the group unit is grouped, the deviation determination means determines whether the deviation amount integrated value added by the group addition means exceeds a preset deviation threshold value, The control amount calculation means calculates the control amount of the voltage reactive power regulating device when the deviation determination means determines that the deviation threshold value is deviated.

According to the second aspect of the present invention, in addition to the operation of the first aspect of the invention, the monitoring point deviation amount integrating means includes a bus voltage to be monitored and an upper limit value of the reactive power flow. The deviation amount from the lower limit value is integrated, and the group addition means adds the deviation amount integrated values of the monitoring points grouped in advance in group units. Then, the deviation determining means determines whether or not the deviation amount integrated value added by the group adding means exceeds a preset group deviation threshold value, and the control amount calculating means deviates from the group deviation threshold value by the deviation determining means. When it is determined, the control amount of the voltage reactive power regulator is calculated. As a result, when the monitoring points belonging to the same group deviate in the same direction, the control can be started more quickly than a single allowable deviation integral value.

According to a third aspect of the present invention, in the voltage reactive power monitoring control device according to the first aspect of the present invention, the total demand for determining a change tendency of the total demanded power amount based on the demanded power amount obtained from the power system information grasping means It is characterized by further comprising change tendency calculating means and deviation threshold correction means for correcting the deviation threshold preset based on the change tendency of the total power demand calculated by the total demand change tendency calculating means.

In the voltage reactive power monitoring control apparatus according to the invention of claim 3, in addition to the operation of the invention of claim 1, the total demand change tendency calculation means is based on the demanded power amount obtained from the power system information grasping means. The deviation threshold correction means corrects the deviation threshold set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means. As a result, it is possible to perform priority control in the upward direction and priority in the downward direction in accordance with the changing tendency of the total demand, and it is possible to flexibly control the changing tendency of the total demand.

According to the fourth aspect of the present invention, in the voltage reactive power monitoring control apparatus, the state quantity is detected from the electric power system and inputted to the electronic computer through the information transmission apparatus, and the magnitude of the bus voltage is detected based on the electric system electric power system information. In a voltage reactive power monitoring control device for monitoring and controlling a reactive power flow, a power system information grasping means for obtaining system information of a power system based on a state quantity transmitted through the information transmission device, and the voltage system. The monitoring point change speed measuring means for measuring the changing speed of the bus voltage and reactive power flow to be monitored from the system state obtained by the information grasping means, and the changing speed obtained by the monitoring point change speed measuring means are preset. Deviation determining means for determining whether or not the change speed deviation threshold is exceeded, and a bus voltage to be monitored when the deviation determining means determines that the change speed deviation threshold is exceeded. And a control amount calculation means for calculating the control amount of the voltage reactive power adjusting device provided at a plurality of locations in the power system so that the reactive power flow falls within the allowable value, and the voltage reactive power calculated by the control amount calculation means. And a command output unit for outputting a command for the control amount for the adjusting device via the information transmission device.

In the voltage reactive power monitoring and controlling apparatus according to the invention of claim 4, the monitoring point change speed measuring means determines the bus voltage and the reactive power flow to be monitored from the system state obtained by the voltage system information grasping means. The change rate is measured, and the deviation determining means activates the control amount calculating means when the change rate exceeds a preset change speed departure threshold value. The control amount calculation means calculates the control amount of the voltage reactive power adjusting device provided at a plurality of points in the power system so that the bus voltage and the reactive power flow to be monitored fall within the allowable values when the start is applied, and a command is issued. A command is output to the voltage reactive power adjusting device via the output means and the information transmission device. Accordingly, when the voltage at the monitoring point and the monitoring reactive power flow change abruptly, control can be started quickly.

According to a fifth aspect of the present invention, in the voltage reactive power monitoring control apparatus according to the fourth aspect of the present invention, the monitoring points are grouped in advance in group units, and the monitoring point changing speeds by the monitoring point changing speed measuring means are grouped. Group deviation adding means is provided for adding to each group, and the deviation judging means judges whether or not the monitoring point changing speed added by the group adding means exceeds a preset group changing speed deviation threshold value. The control amount calculation means calculates the control amount of the voltage reactive power adjusting device when the deviation determination means determines that the deviation threshold of the group change speed is deviated.

In the voltage reactive power monitoring and controlling apparatus according to the invention of claim 5, in addition to the operation of the invention of claim 4, the monitoring point changing speed measuring means measures the changing speed of the bus voltage and the reactive power flow to be monitored. The measurement is performed, and the group addition means adds the speed changes of the monitoring points that are grouped in advance in units of groups. Then, the deviation determining means determines whether or not the change speed added by the group adding means exceeds a preset part loop change speed deviation threshold, and the control amount calculating means determines the group change speed deviation threshold by the deviation determining means. When it is determined that the deviation has occurred, the control amount of the voltage reactive power regulator is calculated. As a result, when a plurality of monitoring points change in the same direction, the control can be started quickly, and the control can be flexibly performed with respect to the deviation tendency of the monitoring points.

According to a sixth aspect of the present invention, in the voltage reactive power monitoring control apparatus according to the fourth aspect of the present invention, the total tendency to determine the change tendency of the total demand power amount is calculated based on the demand power amount obtained from the power system information grasping means. A demand change tendency calculation means and a change speed deviation threshold correction means for correcting the change speed deviation threshold value preset based on the change tendency of the total power demand calculated by the total demand change tendency calculation means. Is characterized by.

In the voltage reactive power monitoring and controlling apparatus according to the invention of claim 6, in addition to the operation of the invention of claim 4, the total demand change tendency calculating means is based on the demand power amount obtained from the power system information grasping means. The change speed deviation threshold correction means corrects the change speed deviation threshold value set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means. As a result, it is possible to perform priority control in the upward direction and priority in the downward direction, and it is possible to flexibly control the changing tendency of the total demand.

According to a seventh aspect of the present invention, in the voltage reactive power monitoring control device according to the first or fourth aspect of the invention, the duration of the control amount in the same direction for the same voltage reactive power adjusting device is continued for a predetermined time. A control amount continuation determination means for determining whether or not is provided, and the control amount calculation means determines the control amount for the voltage reactive power adjusting device when the control amount continuation determination means determines that the control amount has continued for a predetermined time or more. Is output as a command.

In the voltage reactive power monitoring and control apparatus according to the invention of claim 7, in addition to the operation of the invention of claim 1 or 4, the control amount continuation determining means has the same direction for the same voltage reactive power adjusting device. The control amount calculation means determines whether or not the duration of the control amount continues for a predetermined time, and the control amount calculation means controls the voltage reactive power adjusting device when the control amount continuation determination means determines that the control amount has continued for a predetermined time or more. Output the amount as a command. As a result, when the control amount does not continue for a predetermined time or longer, the command output is not performed, so that the frequent control of the voltage reactive power regulating device can be suppressed.

According to an eighth aspect of the invention, in the voltage reactive power monitoring control apparatus according to the seventh aspect of the invention, the total tendency to obtain the change tendency of the total demand power amount is calculated based on the demand power amount obtained from the power system information grasping means. A demand change tendency calculation means; and a predetermined time correction means for correcting the predetermined time set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means. .

In the voltage reactive power monitoring and controlling apparatus according to the invention of claim 8, in addition to the operation of the invention of claim 7, the total demand change tendency calculating means is based on the demand power amount obtained from the power system information grasping means. To obtain the change trend of the total power demand,
The predetermined time correction means corrects a predetermined time set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means. As a result, it is possible to adjust the time until the control can be executed, and it is possible to flexibly control the changing tendency of the total demand.

According to a ninth aspect of the present invention, there is provided a voltage reactive power monitoring control program for inputting a state quantity from a power system through an information transmission device to monitor and control a magnitude of a bus voltage of the power system and a reactive power flow. In addition, the computer, the power system information grasping means for obtaining the system information of the power system based on the state quantity transmitted through the information transmission device, and the monitoring target from the system state obtained by the voltage system information grasping means Monitoring point deviation amount integrating means for integrating deviation amounts from the upper limit value and the lower limit value of the bus voltage and the reactive power flow, and the deviation threshold value in which the deviation amount integrated value obtained by the monitoring point deviation amount integrating means is preset. Deviation determination means for determining whether or not the deviation exceeds the deviation threshold, and the bus voltage and reactive power flow to be monitored when the deviation determination means determines that the deviation threshold has been exceeded, falls within allowable values. A control amount calculating means for calculating the control amount of the voltage reactive power adjusting device provided at a plurality of locations in the power system, and the control amount for the voltage reactive power adjusting device calculated by the control amount calculating means via the information transmission device. To function as a command output unit that outputs a command.

The voltage reactive power monitoring control program according to the ninth aspect of the present invention is input to the computer to operate the computer. As a result, the state quantity is input from the power system via the information transmission device to obtain system information of the power system, and the deviation from the upper and lower limits of the monitored bus voltage and reactive power flow from the obtained system state. The amount is integrated, and it is determined whether or not the deviation amount integrated value exceeds a deviation threshold value set in advance. Then, when it is determined that the deviation threshold is exceeded, the control amount of the voltage reactive power adjusting device provided at multiple points of the power system is calculated so that the bus voltage and the reactive power flow to be monitored fall within the allowable values. , And outputs a command for the calculated control amount for the voltage reactive power adjusting device via the information transmission device.

A voltage reactive power monitoring control program according to the tenth aspect of the present invention inputs the state quantity from the power system through the information transmission device, and monitors the magnitude of the bus voltage of the power system and the reactive power flow. In addition, the computer, the power system information grasping means for obtaining the system information of the power system based on the state quantity transmitted through the information transmission device, and the monitoring target from the system state obtained by the voltage system information grasping means Monitoring point change speed measuring means for measuring the changing speed of the bus voltage and the reactive power flow, and it is determined whether or not the change speed obtained by the monitoring point change speed measuring means exceeds a preset change speed deviation threshold value. And a deviation determining means for ensuring that the bus voltage and the reactive power flow to be monitored fall within the allowable values when the deviation determining means determines that the change speed deviation threshold is exceeded. And a control amount calculating means for calculating a control amount of the voltage reactive power adjustment device provided in a plurality of locations of the power system,
The control amount calculating unit is caused to function as a command output unit that outputs a control amount for the voltage reactive power adjusting device calculated by the control amount calculating unit through an information transmission device.

The voltage reactive power monitoring control program according to the tenth aspect of the present invention is input to the computer to operate the computer. With this, the state quantity is input from the power system via the information transmission device to obtain the system information of the power system, and the change rate of the monitored bus voltage and reactive power flow is measured from the obtained system state and the change It is determined whether or not the speed exceeds a preset change speed deviation threshold value. Then, when it is determined that the change speed deviation threshold value is deviated, the control amount of the voltage reactive power adjusting device provided at a plurality of points in the power system is set so that the bus voltage and the reactive power flow to be monitored fall within the allowable values. The calculated control amount for the voltage reactive power adjusting device is output as a command via the information transmission device.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a voltage reactive power monitoring control device according to a first embodiment of the present invention. In the first embodiment, the upper limit of the bus voltage and the reactive power flow to be monitored from the system state obtained by the voltage system information grasping means 11 in the conventional voltage reactive power monitoring control device shown in FIG. The monitoring point deviation amount integrating means 15 for integrating the deviation amount from the value and the lower limit value, and whether or not the deviation amount integrated value obtained by the monitoring point deviation amount integrating means 15 exceeds a preset deviation threshold value. The deviation determining means 13 and the deviation threshold setting means 16 for setting the deviation threshold used by the deviation determining means 13 are additionally provided, and the control amount calculating means 12 causes the deviation determining means 13 to calculate the deviation amount integrated value. Is determined to have deviated from the deviation threshold, the voltage reactive power regulating device 3 is controlled so that the bus voltage and the reactive power flow to be monitored fall within the allowable values.
The control amount of is calculated. The same elements as those of the conventional voltage / reactive power monitoring and controlling apparatus shown in FIG. 12 are designated by the same reference numerals, and the duplicate description will be omitted.

In FIG. 1, various kinds of voltage reactive power adjusting devices 3 are installed in the power system 2, and the operating state of the voltage reactive power adjusting device 3 and the voltage and reactive power of each monitored part of the power system are informed. It is transmitted to the voltage reactive power monitoring control device 1 via the transmission devices 4a and 4b.

The system information transmitted from the power system 2 is the power system information input means 1 of the voltage reactive power monitoring control device 1.
1, and the state of the power system is determined by the power system information grasping means 11. The state of the electric power system determined by the electric power system information grasping unit 11 is the control amount calculating unit 1
2 and monitoring point deviation amount integration means 15.

The monitoring point deviation amount integrating means 15 integrates the deviation from the allowable upper limit value and the allowable lower limit value of the monitoring point on the basis of the voltage of the monitoring point and the reactive power flow taken into the power system information grasping means 11. To do.

The voltage tolerance upper limit deviation integration is given by equation (10),
The voltage lower limit deviation integral is shown in formula (11), the reactive power flow allowable upper limit deviation integral is shown in formula (12), and the reactive power allowable lower limit deviation is shown in equation (13).

[0042]

[Equation 9] FIG. 2 is an explanatory diagram of the voltage allowable upper limit deviation integration operation in the monitoring point deviation amount integration means 15. Now, the voltage V at the monitoring point deviates from the upper limit value at time t1, becomes less than the upper limit value at time t2, deviates from the upper limit value again at time t3, becomes less than the upper limit value at time t4, and further becomes the lower limit value at time t5. Suppose

In the voltage allowable upper limit deviation integration operation in this case, first, the area A in the period T1 from time t1 to time t2 when the voltage V at the monitoring point deviates from the upper limit is added. On the other hand, the period T2 between the time point t2 and the time point t3 when the value becomes less than the upper limit value.
Subtract the area B in. Similarly, from time t3 to time t4
The area C in the period T3 is added, and the time point t4 to the time point t5
The area D at is subtracted. In this way, the amount exceeding the upper limit value is integrated, and the amount less than the upper limit value is negatively integrated, that is, subtracted. Then, when the integrated value becomes negative and when the voltage V at the monitoring point deviates from the lower limit value at time t5, the voltage allowable upper limit deviation integral value up to now is initialized (= 0).

The voltage allowable upper limit deviation integrated value thus obtained is input to the deviation determining means 13. The deviation determination means 13 compares the voltage allowable upper limit deviation integrated value with the voltage upper limit direction deviation integrated threshold value of the monitoring point preset in the deviation threshold setting means 16, and the voltage allowable upper limit deviation integrated value is the voltage upper limit deviation integration value. It is determined whether the threshold is exceeded. Then, when it is determined that the amount is exceeded, the control amount calculation means 12 is activated. On the other hand, when it is determined that the amount of excess is not exceeded, the control amount calculation means 12 is not activated.

Although the above description has been given of the voltage allowable upper limit deviation integral, the same applies to the voltage allowable upper limit deviation integral. The same applies to the case of the reactive power flow allowable upper limit deviation integration and the reactive power flow allowable lower limit deviation integration.

Hereinafter, for the sake of convenience of explanation, each allowable value deviation integrated value will be collectively referred to as an allowable deviation integrated value. When the allowable deviation integral value is exceeded, the control amount calculation means 12 takes in the state of the power system from the power system information grasping means 11, and from the objective function calculation formula (1), the bus voltage to be monitored and the reactive voltage To ensure that the power flow is within the allowable value,
Voltage reactive power regulating device 3 provided at a plurality of locations in the power system 2
The control amount of is calculated. The control amount is calculated by solving the linear programming algorithm so as to minimize the objective function calculation formula of the formula (1) while keeping the constraint conditions (4) to (9). Although there is a simplex method etc. in the linear programming method, the explanation of the solution method itself is omitted.

The command output means 14 is the control amount calculation means 12
Incorporating the control amount obtained in step 4, the information transmission devices 4c, 4
The control amount for the voltage reactive power regulating device 3 is command-outputted via d.

According to the first embodiment, the control amount calculating means 12 does not immediately perform calculation of the control amount when the voltage or reactive power at the monitoring point deviates from the allowable value, but integrates the deviation amount. Since the execution is started when the value exceeds the threshold value, it is possible to suppress the reaction to the minute disturbance. Further, when the voltage or the reactive power largely deviates from the allowable value, the integrated value becomes large even if the deviation continues for a short time, so that the control amount can be calculated early. Further, when a small deviation occurs, the calculation of the control amount is started when the deviation continues for a long time, so that appropriate control can be performed according to the deviation tendency.

Next, a second embodiment of the present invention will be described. FIG. 3 is a configuration diagram of a voltage and reactive power monitoring control device according to a second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that a group addition means 17 for adding the allowable deviation integrated value to each monitoring point group is provided, and the deviation determination means 13 is used for the group addition. The means 17 determines whether the integrated value of the deviation amount added exceeds a preset group deviation threshold value, and the control amount calculation means determines the voltage when the deviation determination means 13 determines that the deviation value exceeds the group deviation threshold value. The control amount of the reactive power adjusting device 3 is calculated. The same elements as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 3, monitoring point deviation amount integration means 15
On the basis of the voltage at the monitoring point and the reactive power flow taken into the power system information grasping means 11, integrates the deviation from the allowable upper limit value and the allowable lower limit value of the monitoring point and outputs the result to the deviation judging means 13 and the group. It outputs to the adding means 17. In the group addition means 17, when the allowable deviation integral value obtained by integrating the deviation from the allowable upper limit value and the allowable lower limit value of the monitoring point is input, the allowable deviation integral of the monitoring point group belonging to the group i based on the following equation (14). The permissible deviation integral value GRP _εi for each group, which is the sum of the values, is calculated.

[0051]

[Equation 10] The deviation determining means 13 compares the permissible deviation integral value GRP _{εi for} each group calculated by the group adding means 17 with the group deviation threshold value for each group preset in the deviation threshold setting means 16. Thereby, it is determined for each group whether or not the permissible deviation integral value GRP _εi for each group exceeds the group deviation threshold value.

When the deviation determining means 13 determines that the permissible deviation integral value GRP _εi for each group deviates from the group deviation threshold value, the control amount calculating means 12 determines that
The control amount of the voltage reactive power adjusting device 3 is calculated, and the calculated control amount is output to the voltage reactive power adjusting device 3 via the designated output means 14 and the information transmission devices 4c and 4d.

According to the second embodiment, when a plurality of monitoring points belonging to the same group deviate in the same direction, the control amount is calculated by the permissible deviation integral value GRP _{εi for} each group calculated by the group adding means 17. Since the calculation is started, the control can be started more quickly than the single allowable deviation integral value.

Also, when both the deviation of the interconnection reactive power flow and the deviation of the specific monitoring point voltage occur at the same time,
The calculation of the controlled variable can be started quickly, and the control can be flexibly performed according to the deviation tendency of the monitoring point. Therefore, it is possible to perform control corresponding to the system operation characteristics of each power system.

Next, a third embodiment of the present invention will be described. FIG. 4 is a configuration diagram of a voltage and reactive power monitoring control device according to a third embodiment of the present invention. The third embodiment is different from the first embodiment shown in FIG. 1 in that the total demand change for obtaining a change tendency of the total demand power amount based on the demand power amount obtained from the power system information grasping means 11. The tendency calculating means 30 and the deviation threshold correcting means 29 for correcting the deviation threshold preset based on the changing tendency of the total power demand calculated by the total demand change tendency calculating means 30 are additionally provided. . The same elements as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 4, total demand change tendency calculation means 3
0 obtains the changing tendency of the total demand for the near future. Then, the deviation correcting unit 29 corrects the deviation threshold for the allowable upper and lower limit deviation integral value obtained from the deviation threshold setting unit 16 based on the change tendency of the total demand, and creates the corrected deviation threshold.

For example, in the case of the total power demand characteristic as shown in FIG. 5, a sudden monotonous increase in total demand is expected in the time zone from 8:00 to 10:00 at the start of the morning.
Therefore, from the viewpoint of maintaining the voltage at the monitoring point, the control is performed in the voltage increasing direction. In a short time section, a disturbance in the voltage lowering direction control may occur temporarily, but in a long time section, the voltage raising direction control is performed.

Therefore, the total demand change tendency calculating means 30 calculates the change tendency A of the total demand for the near future as follows (1)
5), and the deviation correction means 29 further calculates (1
Based on equation (6), the deviation threshold for the allowable upper and lower limit deviation integration value obtained from the deviation threshold setting means 16 is corrected to create a corrected deviation threshold.

A = Σ (Pt−1 + Pt) / Δt (15) (Correction deviation threshold) = α · A · (Departure threshold) (16) where α is an allowable deviation integration threshold for total demand change Conversion coefficient In addition, with respect to the sudden drop and increase tendency of total demand that is expected in the time zone from 12:00 to 13:00, there is a possibility that a large disturbance may occur, unlike the rise time in the morning. The execution of the means 29 may be locked.

According to the third embodiment, the deviation threshold value is corrected in accordance with the changing tendency of the total demand for electric power.
It is possible to enable priority control in the upward direction and priority control in the downward direction. For example, since it is known that the load change occurs in advance in the morning rise time zone, lunch break time zone, etc., the total demand change tendency calculation unit 30 obtains the change tendency of the total demand in the time zone, and the deviation threshold is derived from the tendency. To correct. Therefore, it becomes possible to flexibly control the changing tendency of the total demand.

Next, a fourth embodiment of the present invention will be described. FIG. 6 is a configuration diagram of a voltage and reactive power monitoring control device according to a fourth embodiment of the present invention. The fourth embodiment is different from the first embodiment shown in FIG. 1 in that instead of the monitoring point deviation amount integrating means 15, it measures the changing speeds of the bus voltage and the reactive power flow which are the monitoring point targets. The monitoring point change speed measuring means 18 is provided. The same elements as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 6, monitoring point change speed measuring means 1
8 is the change rate ΔV of the bus voltage at the monitoring point_dkAnd reactive power
Tidal current change rate ΔQ_dlTo measure. Bus voltage change rate
ΔV _dkIs expressed by equation (17), and the rate of change of reactive power flow
Degree ΔQ_dlIs expressed by equation (18).

ΔV _dk = dV _dk / dt (17) V _dk : voltage at the monitoring point k ΔQ _dl = dQ _dl / dt (18) Q _dl : power flow of the monitoring power flow l And the deviation determining means 13 monitors The bus voltage change speed ΔV _{dk at} the monitoring point measured by the point change speed measuring means 18 is compared with the change speed deviation threshold, and the reactive power flow change speed ΔQ _dl is compared with the change speed deviation threshold. These change speed deviation thresholds are preset by the deviation threshold setting means 16.

As a result of the judgment by the deviation judging means 13, when the bus voltage change speed ΔV _dk or the reactive power flow change speed ΔQ _{dl at} the monitoring point exceeds the change speed deviation thresholds,
The control amount calculation means 12 calculates the control amount of the voltage reactive power adjusting device 3.

According to the fourth embodiment, when the change tendency of the monitoring point voltage and the monitoring reactive power flow is small, the control command is issued in the normal control time, but the monitoring point voltage and the monitoring reactive power flow are If it changes abruptly, the deviation determining means 1
Control can be started quickly based on the determination result of 3. Accordingly, for example, when some large disturbance occurs in the upper system, it is possible to quickly respond and output the control command.

Next explained is the fifth embodiment of the invention. FIG. 7 is a configuration diagram of a voltage reactive power monitoring control device according to a sixth embodiment of the present invention. The sixth embodiment is different from the fourth embodiment shown in FIG. 6 in that the group addition unit 1 adds the monitoring point changing speed by the monitoring point changing speed measuring unit 18 to the grouped group unit.
7 is additionally provided, and the deviation determining means 13 is
It is determined whether the monitoring point change speed added by the group addition means 17 exceeds a group change speed departure threshold preset in the departure threshold setting means 16, and the control amount calculation means 12 causes the departure determination means 13 to perform the group change. The control amount of the voltage reactive power regulating device 3 is calculated when it is determined that the variation speed deviation threshold value is deviated. The same elements as those of the fourth embodiment shown in FIG. 6 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 7, monitoring point change speed measuring means 1
Reference _{numeral 8} measures the changing speed ΔV _dk of the bus voltage at the monitoring point and the changing speed ΔQ _dl of the reactive power flow, and outputs the measured speed to the deviation determining means 13 and the group adding means 17. The group addition means 17 obtains the sum of the changing speeds of the bus voltage at the monitoring point and the reactive power flow, and outputs the sum as the group monitoring point changing speed sum to the deviation determining means 13.

When the deviation judging means 13 inputs the changing speed of the bus voltage and reactive power flow at the monitoring point from the monitoring point changing speed measuring means 18 and the group monitoring point changing speed sum from the group adding means 17, the deviation judging means 13 inputs , And the deviation threshold setting means 16 compares the change speed deviation threshold or the group change speed deviation threshold preset. Then, when the vehicle deviates from these deviation thresholds, the control amount calculation means 12
To start.

According to the fifth embodiment, the monitoring point change speed measuring means 18 and the group adding means 17 control the control amount for both the change speed departure threshold and the case where the group change speed departure threshold is exceeded. The calculation means 12 can be executed. Therefore, when a plurality of monitoring points in the group change in the same direction, the control can be started quickly, and the control can be flexibly performed against the deviation tendency of the monitoring points.

Next explained is the sixth embodiment of the invention. FIG. 8 is a configuration diagram of a voltage and reactive power monitoring control device according to a sixth embodiment of the present invention. In the sixth embodiment, a total demand change tendency calculation means 30 and a change speed deviation threshold correction means 31 are added to the fourth embodiment shown in FIG. The same elements as those of the fourth embodiment shown in FIG. 5 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 8, total demand change tendency calculation means 3
0 obtains the changing tendency of the total demand for the near future. Then, the changing speed deviation correcting means 31 corrects the changing speed deviation threshold for the changing speed obtained from the deviation threshold setting means 16 based on the changing tendency of the total demand, and creates a corrected changing speed deviation threshold. The calculation of the total demand change tendency for the near future by the total demand change tendency calculation means 30 is performed in the same manner as in the case of the third embodiment.

That is, in the total demand change tendency calculating means 30, the change tendency A of the total demand with respect to the near future is calculated as follows (1)
9) and further, the changing speed deviation correcting means 31 corrects the changing speed deviation threshold for the changing speed obtained from the deviation threshold setting means 16 based on the expression (20) to create a corrected deviation threshold.

B = Σ (Pt−1 + Pt) / Δt (19) (Corrected change speed deviation threshold) = β · B · (Change speed deviation threshold) (20) where β is a change with respect to the total demand change Conversion coefficient of speed deviation threshold According to the sixth embodiment, the change speed deviation threshold is corrected in accordance with the change tendency of the total demand, thereby making it possible to perform priority control in the ascending direction and priority in the descending direction. Therefore, it is possible to flexibly control the changing tendency of the total demand.

Next, a seventh embodiment of the present invention will be described. FIG. 9 is a configuration diagram of a voltage and reactive power monitoring control device according to a seventh embodiment of the present invention. This seventh embodiment is
In addition to the first embodiment shown in FIG. 1, a control amount continuation determination means 27 and a control amount storage means 26 are additionally provided. The same elements as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 9, the control amount continuation determination means 27
Inputs the control amount calculated by the control amount calculation means 12,
It is determined whether the control amount is continuously output for a predetermined time. Since the control amount calculation means 12 calculates the control amount in a predetermined cycle, the control amount continuation determination means 27 determines the presence or absence of the control amount for each cycle, and continuously counts the number of times the control amount is present. The counted number is stored in the controlled variable storing means 29. Then, when the number of times becomes equal to or more than the predetermined number, it is determined that the control amount is continuously output for the predetermined time.

Then, when the control amount continuation determining means 27 determines that the control amount has continued for a predetermined time or longer, the control amount calculating means 12 outputs a control amount for the voltage reactive power adjusting device to the command output means 14. .

FIG. 10 is a flow chart showing the processing contents of the control amount calculating means 12 in the seventh embodiment of the present invention. Step S6 and step S7 are added to the processing contents of the conventional control amount calculation means 12 shown in FIG. That is, the optimum calculation by the LP method (S
4) After that, the judgment result by the control amount continuation judging means 27 is input as data (S6).

Then, it is determined whether or not the determination result by the control amount continuation determination means 27 is continuation, that is, whether or not the number of times the control amount is present is less than the predetermined number (S7). When the determination result is continuation (the number of times the control amount is present is less than the predetermined number), the control execution is suspended until the next calculation cycle of the control amount calculation means 27.

On the other hand, when the determination result is control execution (when the number of times the control amount is present exceeds the predetermined number), the command value is created (S5). Thereby, the command output means 14
At, a command output is output for the control amount for the voltage reactive power regulator.

FIG. 11 is a flow chart showing the processing contents of the control amount continuation determination means 27 in the seventh embodiment. First, the control amount is input from the control amount calculation means 12 (S21), and the record data of the number of times of the control amount continuously from the previous execution is input from the control amount storage means 29 (S2).
2). Next, it is determined whether or not the control amount this time is zero (S2
3) If the control amount at this time is zero, the number of times of raising direction recording and the number of times of lowering direction recording are both increased to +1 (S24). Then, the control amount is continued (S2
5).

On the other hand, if the control amount this time is not zero,
It is determined whether the control amount is the raising direction or the lowering direction (S26). When the control amount is the raising direction, the lowering direction number record is initialized (= 0) (S27) and the raising direction number record is increased by +1. Yes (S28). On the other hand, when the control amount is in the downward direction, the upward direction frequency record is initialized (= 0) (S29), and the downward direction frequency record is incremented by +1 (S3).
0).

Then, the record of the number of times in the same direction as the control amount of this time is substituted into the judgment record (S31), and it is judged whether or not the judgment record is equal to or more than the specified value (S32). If the judgment record is within the specified value, the control amount is continued this time (S25). On the other hand, if it is greater than the specified value, the control is executed this time (S3).
3). Then, the record of the number of times of the upward direction and the record of the number of times of the downward direction are stored in the control amount storage means 26 as the previous value (S3).
4).

In the above description, the control amount continuation judging means 27 and the control amount storing means 29 are provided in addition to the first embodiment shown in FIG. 1, but the fourth embodiment is described. On the other hand, the control amount continuation determination means 27 and the control amount storage means 29 may be provided.

According to the seventh embodiment, the command output means 14 outputs a command for the control amount to the voltage reactive power regulating device only when it is determined that the control amount has continued for a predetermined time or longer. That is, when the control amount does not continue for a predetermined time or longer as in the case of an instantaneous disturbance change in the power system, the command output is not performed, so that the frequent control of the voltage reactive power adjusting device can be suppressed.

Next, an eighth embodiment of the present invention will be described. FIG. 12 is a configuration diagram of a voltage and reactive power monitoring and controlling apparatus according to an eighth embodiment of the present invention. The eighth embodiment is different from the seventh embodiment shown in FIG. 9 in that the total demand change for obtaining a change tendency of the total demand power amount based on the demand power amount obtained from the power system information grasping means 11. The tendency calculation means 30 and the predetermined time correction means 32 for correcting a predetermined time set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means 30 are additionally provided. . The same elements as those of the seventh embodiment shown in FIG. 9 are designated by the same reference numerals, and overlapping description will be omitted.

In FIG. 12, the total demand change tendency calculating means 30 calculates the change tendency of the total demand for the near future. Then, the predetermined time correction means 32 corrects the predetermined time set in advance based on the change tendency of the total power demand calculated by the total demand change tendency calculation means 30.

That is, in the total demand change tendency calculation means 30, the change tendency C of the total demand for the near future is calculated as follows (2
1) and further in the predetermined time correction means 32,
Based on the equation (22), the control time continuation determination means 27 corrects the predetermined time which is the determination threshold of the duration.

The predetermined time correction means 32 calculates the continuation time judgment threshold value held by the control amount continuation judgment means 27 based on the change tendency of the total demand calculated by the total demand change tendency calculation means 30 by the formula 8 (2
1) Correct according to (22). The control amount continuation determination means 27 is performed based on the corrected duration determination threshold value.

C = Σ ((Pt-1 + Pt) / Δt) (21) (predetermined time after correction = γ · C · (predetermined time) (22) where γ is a predetermined time with respect to total demand change According to the eighth embodiment, the predetermined time can be corrected based on the change tendency of the total demand, and the control amount continuation determination can be performed and the control can be executed by correcting the predetermined time. Since the time until it can be adjusted can be adjusted, it becomes possible to flexibly control the changing trend of the total demand.

The method described in each of the above-described embodiments can be stored in a storage medium as a program that can be executed by a computer and executed by an arithmetic processing unit of the computer.

The storage medium in the present invention is a magnetic disk, a flexible disk, an optical disk (CD-R).
OM, CD-R, DVD, etc., magneto-optical disk (MO
Etc.), a semiconductor memory, and the like, and the storage format may be any form as long as the storage medium can store the program and is readable by a computer. In addition, the storage medium is not limited to a medium independent of a computer, but includes a storage medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored.

[0092]

As described above, according to the present invention, in the electric power system, when the control for maintaining the monitored bus voltage or reactive power flow at the target value is performed, the deviation between the monitoring point and the target value It is possible to perform the control promptly according to the magnitude of the integration amount or the magnitude of the deviation change speed of the monitoring point.

Further, according to the tendency of the change in the total demand, the increase control is prioritized when the electric power demand increases, and the lowering direction is prioritized when the electric power demand decreases, so that it is difficult to respond to the minute disturbance and the control for the long-term change becomes possible. In addition, since the continuous predetermined time until the calculation of the control amount is started is provided, it is possible to perform the control that is difficult to respond to the minute disturbance.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a voltage and reactive power monitoring control device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a voltage allowable upper limit deviation integration operation in the monitoring point deviation amount integration means according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a voltage and reactive power monitoring control device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a voltage and reactive power monitoring control device according to a third embodiment of the present invention.

FIG. 5 is a characteristic diagram of a changing tendency of the total demand for electric power according to the third embodiment of the present invention.

FIG. 6 is a configuration diagram of a voltage and reactive power monitoring control device according to a fourth embodiment of the present invention.

FIG. 7 is a configuration diagram of a voltage and reactive power monitoring controller according to a fifth embodiment of the present invention.

FIG. 8 is a configuration diagram of a voltage and reactive power monitoring control device according to a sixth embodiment of the present invention.

FIG. 9 is a configuration diagram of a voltage and reactive power monitoring control device according to a seventh embodiment of the present invention.

FIG. 10 is a flowchart showing the processing contents of a controlled variable calculating means 12 according to a seventh embodiment of the present invention.

FIG. 11 is a flowchart of control amount continuation determination means according to the seventh embodiment of the present invention.

FIG. 12 is a configuration diagram of a voltage and reactive power monitoring controller according to an eighth embodiment of the present invention.

FIG. 13 is a configuration diagram of a conventional voltage reactive power monitoring control device.

FIG. 14 is a flowchart showing a procedure for calculating the control amount of each voltage reactive power adjusting device in the control amount calculating means of the conventional voltage reactive power monitoring control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Voltage reactive power monitoring control device, 2 ... Power system, 3 ... Voltage reactive power adjusting device, 4 ... Information transmission device, 11 ... Power system information grasping means, 12 ... Control amount calculation means, 13 ... Deviation determination means, 14 ... command output means, 15 ... monitoring point deviation amount integrating means, 16 ... deviation threshold setting means, 17 ... group adding means, 18 ... monitoring point change speed measuring means, 27 ... control amount continuation judging means, 28 ... operational target value setting Means, 29 ... Deviation threshold correction means, 30 ... Total demand change tendency calculation means, 31 ... Change speed deviation threshold correction means, 32 ... Predetermined time correction means

Claims (10)

[Claims] 1. A voltage / reactive power monitoring control device for inputting a state quantity from a power system to an electronic computer through an information transmission device to monitor and control the magnitude of a bus voltage and reactive power flow of the power system, wherein: A power system information grasping means for obtaining system information of the power system based on the state quantity transmitted through the transmission device, and a bus voltage and reactive power to be monitored from the system state obtained by the voltage system information grasping means. Monitoring point deviation amount integrating means for integrating the deviation amount from the upper limit value and the lower limit value of the tidal current, and whether the deviation amount integrated value obtained by the monitoring point deviation amount integrating means exceeds a preset deviation threshold value or not. Departure determining means for determining, and a plurality of locations in the power system so that the bus voltage and reactive power flow to be monitored fall within allowable values when the deviation determining means determines that the deviation threshold is exceeded. Control amount calculating means for calculating a control amount of the provided voltage reactive power adjusting device, and command output means for outputting a control amount for the voltage reactive power adjusting device calculated by the control amount calculating device as an instruction via an information transmission device. And a voltage reactive power monitoring and controlling apparatus. 2. A group adding means for adding monitoring point deviation amount integrated values by the monitoring point deviation amount integrating means to the grouped group units in advance by grouping the monitoring points into group units, and the deviation determining means. Determines whether the deviation amount integrated value added by the group addition means exceeds a preset group departure threshold value, and the control amount calculation means deviates from the group departure threshold value by the departure determination means. The voltage reactive power monitoring control device according to claim 1, wherein the control amount of the voltage reactive power adjusting device is calculated when the determination is made. 3. A total demand change tendency calculation means for obtaining a change tendency of the total demand power quantity based on the demand power quantity obtained from the power system information grasping means, and a total demand power calculated by the total demand change tendency calculation means. 2. The voltage reactive power monitoring control apparatus according to claim 1, further comprising: deviation threshold correction means for correcting the deviation threshold set in advance based on the tendency of change in the quantity. 4. A voltage / reactive power monitoring control device for inputting a state quantity from a power system to an electronic computer via an information transmission device to monitor and control the magnitude of a bus voltage and reactive power flow of the power system, wherein A power system information grasping means for obtaining system information of the power system based on the state quantity transmitted through the transmission device,
Monitoring point change speed measuring means for measuring the changing speed of the bus voltage and reactive power flow to be monitored from the system state obtained by the voltage system information grasping means, and the changing speed obtained by the monitoring point change speed measuring means Deviates from a preset change speed deviation threshold and determines whether the deviation exceeds the change speed deviation threshold, and when the deviation judgment means deviates from the change speed deviation threshold, the monitored bus voltage and reactive power flow Control amount calculating means for calculating the control amount of the voltage reactive power adjusting device provided at a plurality of points of the power system so that the value falls within the allowable value, and control for the voltage reactive power adjusting device calculated by the control amount calculating means A voltage reactive power monitoring control device, comprising: a command output unit for outputting a command to output an amount via an information transmission device. 5. Grouping means for adding the monitoring point change speed by the monitoring point change speed measuring means to the grouped group unit in advance by grouping the monitoring points in group units, and the deviation determining means, It is determined whether or not the monitoring point change speed added by the group addition means exceeds a preset group change speed deviation threshold value, and the control amount calculation means deviates from the group change speed deviation threshold value by the deviation judgment means. 5. The voltage reactive power monitoring control apparatus according to claim 4, wherein the control amount of the voltage reactive power adjusting device is calculated when it is determined that the voltage reactive power monitoring apparatus is controlled. 6. A total demand change tendency calculation means for obtaining a change tendency of the total demand power quantity based on the demand power quantity obtained from the power system information grasping means, and a total demand power calculated by the total demand change tendency calculation means. 5. The voltage reactive power monitoring control device according to claim 4, further comprising: a change speed deviation threshold correction unit that corrects the change speed deviation threshold value set in advance based on a change tendency of the amount. 7. A control amount continuation determination means for determining whether or not the duration of the control amount in the same direction for the same voltage reactive power regulating device has continued for a predetermined time, and the control amount calculation means is for the control amount. 5. The voltage reactive power monitoring controller according to claim 1 or 4, wherein when the continuation determining means determines that the control amount has continued for a predetermined time or more, the control amount for the voltage reactive power adjusting device is command-outputted. . 8. A total demand change tendency calculation means for obtaining a change tendency of the total demand power quantity based on the demand power quantity obtained from the power system information grasping means, and a total demand power calculated by the total demand change tendency calculation means. 8. The voltage reactive power monitoring control apparatus according to claim 7, further comprising a predetermined time correction unit that corrects the predetermined time set in advance on the basis of the change tendency of the amount. 9. A computer for transmitting a state quantity from a power system through an information transmission device and monitoring and controlling the magnitude of a bus voltage of the power system and reactive power flow is transmitted through the information transmission device. Power system information grasping means for obtaining system information of the power system based on the received state quantity, and the upper and lower limits of the bus voltage and reactive power flow to be monitored from the system state obtained by the voltage system information grasping means. Monitoring point deviation amount integrating means for integrating the deviation amount from, and deviation determining means for determining whether the deviation amount integrated value obtained by the monitoring point deviation amount integrating means exceeds a preset deviation threshold value, A voltage reactive power adjusting device provided at a plurality of positions in the power system so that the bus voltage and the reactive power flow to be monitored fall within allowable values when the deviation determining unit determines that the deviation threshold is exceeded. Control amount calculation means for calculating the control amount, and voltage reactive power for functioning as command output means for command-outputting the control amount for the voltage reactive power adjustment device calculated by the control amount calculation means via an information transmission device. Supervisory control program. 10. A computer for inputting a state quantity from an electric power system through an information transmission device and monitoring and controlling a magnitude of a bus voltage of the electric power system and a reactive power flow is transmitted through the information transmission device. Power system information grasping means for obtaining system information of the power system based on the received state quantity,
Monitoring point change speed measuring means for measuring the changing speed of the bus voltage and reactive power flow to be monitored from the system state obtained by the voltage system information grasping means, and the changing speed obtained by the monitoring point change speed measuring means Deviates from a preset change speed deviation threshold and determines whether the deviation exceeds the change speed deviation threshold, the bus voltage and reactive power flow to be monitored Control amount calculating means for calculating the control amount of the voltage reactive power adjusting device provided at a plurality of points of the power system so that the value falls within the allowable value, and control for the voltage reactive power adjusting device calculated by the control amount calculating means A reactive voltage monitoring control program for causing a quantity to function as a command output unit that outputs a command via an information transmission device.