JPH0675646A - Adjustment controller - Google Patents

Abstract

PURPOSE:To increase the control precision while preventing a hunting phenomenon. CONSTITUTION:A blind zone width data correction part 2 finds a correction quantity from variation data on active power at the time of last control and current blind zone width data, and corrects and outputs blind zone width data. A control logic part 3 discriminates whether or not active power detection data 12 is in a blind zone area around an active power reference data 15 and is as wide as dead zone width data 14 and outputs a control command signal 16 commanding one-tap control to a phase adjuster 4. The dead zone width data is updated into the corrected dead zone width data 14 and the control is repeated until the active power detection data 12 enters the blind zone area. When the variation data on the active power at the time of the last control is larger than the blind zone width data, the blind zone width is widened, but when not, the blind zone width is narrowed down for the control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjustment control device for adjusting active power and the like in a power system.

[0002]

2. Description of the Related Art FIG. 10 is a block diagram of a conventional active power adjustment control device, FIG. 11 is a conceptual diagram showing the basic concept of its control logic, and FIG. 12 is a flow chart of control logic in a control logic unit described later. It is a figure. In FIG.
Reference numeral 1 is CT input data 10 output from a current transformer CT (not shown) and PT input data 11 output from a transformer PT (not shown) as input data, and outputs active power detection data 12 that is a current active power value. The active power detection unit 3f determines whether the active power detection data 12 is within a dead zone described later and outputs the control command signal 16 to the control logic unit 4. The control logic unit 4 receives the control command signal 16 and is effective. It is a phase adjuster that adjusts the phase by performing control of increasing by one tap or control of decreasing by one tap in order to bring the power to a desired value.

The dead zone region is a region centered on active power reference data 15 which is an adjustment target input from an external device (not shown) to the control logic unit 3f, and is also input from the external device to the control logic unit 3f. It has a width of the dead band width initial data 13 for preventing hunting due to a control error, and indicates a desired active power range. In FIG. 11, dF is dead band width data equal to the dead band width initial data 13 in the example of FIG. 10, and P is a coordinate of active power taken in the vertical direction of the drawing.

Next, the operation of the control logic unit 3f shown in FIG. 10 will be described. As shown in FIG. 12, a set of active power reference data 15 (step 300), a set of dead band width initial data 13 that becomes the dead band width data dF (step 301),
After the active power detection data 12 is set (step 302), it is determined whether or not the active power detection data 12 is within the dead zone having the width of the dead zone width data dF centered on the active power reference data 15. (Step 303).

If the active power detection data 12 is outside the dead zone region, it is determined whether the active power detection data 12 is higher or lower than the dead zone region (step 304). If it is lower, the 1-tap control for outputting the control command signal 16 for instructing the phase adjuster 4 to control the 1-tap increase is executed (step 30).
5). When the active power detection data 12 is higher than the dead zone region, the 1-tap control is executed to output the control command signal 16 for instructing the phase adjuster 4 to control the 1-tap lowering (step 306). Since the number of taps for phase adjustment of the phase adjuster 4 is limited, it is next determined whether or not the tap position is at the upper limit or the lower limit (step 307). Return to the set of power detection data 12 to continue the control (step 30).
2). This completes one adjustment for controlling the phase adjuster 4 by one tap.

At step 307, if the tap position of the phase adjuster 4 is at the upper limit or the lower limit, no further operation can be performed, so that the phase adjustment is not established (step 308). When the phase adjustment is not established, the active power reference data 15 is re-input from an external device (not shown), the tap of the phase adjuster 4 is returned to the original state, and the control is restarted. In addition,
When the active power detection data 12 is within the dead zone at the time of executing step 303, the active power value is currently desired,
Return to the set of active power detection data 12 (step 30
2) As long as the active power detection data 12 is within the dead zone area, the loop of steps 302 and 303 is continued.

The above-mentioned one-time adjustment is executed many times until the active power detection data 12, which is the current value of the active power passing through the primary side (not shown) of the phase adjuster 4, falls within the dead zone. As a result, active power can be adjusted to a desired value.

[0008]

In the conventional active power adjustment control device, the active power passing through the primary side of the phase adjuster 4 changes depending on the voltage at the transmitting end and the voltage at the receiving end. The change data of the active power when the 1-tap control is performed is not always constant. Therefore, when the dead zone width data dF is fixed, a hunting phenomenon occurs depending on the change data of the active power when 1 tap control is performed.

This is because the change data of the active power when the phase adjuster 4 is controlled by 1 tap is the dead band width data d.
Assuming that the value is larger than F, the active power detection data 12 is lower than the dead zone area, and is in the vicinity thereof, the control logic unit 3f operates the phase adjustment tap of the phase adjuster 4 in the upward direction, but 1 tap. Since the change data of the active power when controlled is larger than the dead zone width, the active power detection data 12 is adjusted to a value higher than the dead zone area beyond the dead zone area. Next, since the active power detection data 12 is higher than the dead zone region, the control logic unit 3f operates the tap of the phase adjuster 4 in the lowering direction, but for the same reason as above,
The active power detection data 12 is adjusted to a value exceeding the dead zone area and lower than the dead zone area. That is, in this case, the hunting phenomenon in which the above-described operation is repeated is continued unless the change data of the active power when the 1-tap control is performed becomes smaller than the dead band width data dF.

There is also a method of fixing the dead band width data dF to the expected maximum value of the change data of the active power at the time of 1-tap control. In this case, the hunting phenomenon can be prevented, but the dead band region becomes wider, If there is active power detection data 12 in the above, it means that the adjustment has been made, so the control accuracy becomes extremely poor. SUMMARY OF THE INVENTION In order to solve the above problems, it is an object of the present invention to control the dead zone width data by always correcting it to an optimum value or controlling without setting the dead zone region.

[0011]

SUMMARY OF THE INVENTION The present invention corrects from power change data, which is the difference between the power detection data at the time of the previous control and the current power detection data, and dead band width data which is a preset adjustment target range. Dead band width data correction unit that calculates the amount and corrects and outputs the dead band width data, and phasing means until the power detection data reaches the dead band width range composed of the dead band width data output from the dead band width data correction unit. And a control logic unit for continuously controlling. Similarly, it has a dead band width data correction unit and a control logic unit that continuously controls the voltage regulator.

Further, the power reference data is calculated using the power detection data, the power reference data which is a preset adjustment target, and the power change data which is the difference between the power detection data at the time of the previous control and the current power detection data. And a second absolute value which is the difference between the power detection data after the one-time control and the power reference data and the current power detection data are calculated, and the first absolute value is calculated as the first absolute value. It is characterized by having a control logic unit for continuously controlling the phase adjusting means on condition that it is smaller than the absolute value of 2. Similarly, it has a control logic unit for continuously controlling the voltage regulator.

[0013]

According to the present invention, the dead band width data for the next control is corrected from the change data of the power etc. when the phase adjusting means for adjusting the power is controlled last time, and the optimum dead band width data is always obtained and controlled. can do. In addition, the value of the power after control is calculated from the change data of the power when the phasing means was controlled the previous time, and either the detected data such as the power after control or the detected data such as the current power becomes the reference data. The control operation can be determined and controlled depending on whether they are close to each other.

[0014]

1 is a block diagram of an active power adjustment control apparatus showing an embodiment of the present invention, and FIG. 2 is a flow chart of a control logic of a dead band width data correction unit described later. In FIG. 1, the active power detecting section 1 which is the power detecting means and the phase adjuster 4 which is the phase adjusting means are the same as those in the example of FIG. Reference numeral 2 denotes a dead band width data correction unit that obtains a correction amount from the change data of the active power and the dead band width data when the phase adjuster 4 was previously controlled by one tap, and outputs the corrected dead band width data 14. 3 is the control logic unit 3f in FIG.
Is a control logic unit having the same control logic as described above, in which active power detection data 12 is corrected dead band width data 14 centered on active power reference data 15 input from an external device.
It is determined whether or not it is within the dead zone region having the width of, and the control command signal 16 for instructing the phase adjuster 4 to perform the control of raising one tap or the control of lowering one tap is output. Reference numeral 13 denotes dead band width initial data which is the first dead band width data input to the dead band width data correction unit 2 from an external device.

First, the operation of the dead band width data correction unit 2 in FIG. 1 will be described. The change data of the active power when the phase adjuster 4 is controlled by one tap last time is compared with the active power detection data 12 at the time of the previous control and the current active power detection data 12 inside the dead band width data correction unit 2. It is calculated. This change data is set as shown in FIG. 2 (step 1
00), at the same time, during the first control, after setting the dead band width data equal to the dead band width initial data 13 (step 101), the following calculation is executed (step 102).
Here, the current dead band width data is dFn, the phase adjuster 4
Assuming that the change data of the active power when 1-tap control is performed last time is dPn, the correction amount e obtained in step 102
Is given by the following equation (1). e = dPn-dFn (1)

By the way, the value of the dead band width data dFn and the change data dPn of the active power when the previous one tap control is performed.
, The absolute value | e | of the correction amount e is not large enough to make the following correction. For this reason, even if the correction is performed as it is, the correction of the dead band width data is not sufficient when the influence of the control error or the like is included, so that a hunting phenomenon occurs in some cases. Therefore, the absolute value | e | of the correction amount e and the constant error amount ε determined from the control error or the like are discriminated from each other (step 103), and when the absolute value | e | By not performing the correction in the above, the influence of the control error is eliminated and the occurrence of the hunting phenomenon is prevented.

When | e |> ε, a sufficient amount of correction can be made, so the sign of the correction amount e is determined (step 10).
4) In the case of e <0, the new dead band width data dFn + 1 is corrected by the calculation to correct the dead band width as shown in the following equation (2) (step 105) and output to the control logic unit 3. To do. dFn + 1 = dFn− | e | (2) When e ≧ 0, the new dead band width data dFn + 1 is corrected by performing an operation to correct the dead band width as shown in the following equation (3). (Step 106), and outputs to the control logic unit 3. dFn + 1 = dFn + | e | (3)

Next, the operation of the control logic unit 3 is similar to that of the control logic unit 3f in FIG. 10, and active power detection is performed in the dead band region having the width of the dead band width data dFn + 1 centered on the active power reference data 15. Phase adjuster 4 when data 12 is low
1 tap increase control is determined, and if the active power detection data 12 is higher than the dead zone region, 1 tap decrease control execution is determined, and control for commanding phase adjustment of 1 tap in the determined direction. The command signal 16 is output to the phase adjuster 4. After the control command signal 16 is output, the dead zone width data correction unit 2 increments the number of times n, which indicates the number of times of control, by 1 (step 107).

With this, one adjustment for controlling the phase adjuster 4 by one tap is completed, and the dead band width data is returned to the set of the dead band width data again (step 101). dFn + 1 is set and the above control is continuously performed until the active power detection data 12 reaches the dead zone. Note that the phase adjuster 4 is used as in FIG.
When the tap position of becomes the upper limit or the lower limit, the process of phase adjustment failure is performed. As described above, if | e | ≦ ε in step 103, the dead band width data cannot be sufficiently corrected, so the dead band width data is set again (step 101), and | e | This loop is repeated until ε is reached.

In the above control, when the change data dPn of the active power when the phase adjuster 4 is controlled by one tap last time is equal to or more than the dead band width data dFn (e ≧ 0), the dead band width is widened and controlled by one tap last time. When the change data dPn of active power when controlled is smaller than the dead band width data dFn (e
Since <0) controls by narrowing the dead zone width, it is possible to improve the control accuracy while preventing the occurrence of the hunting phenomenon and adjust the active power to a desired value.

The example of FIG. 1 can also be applied to the purpose of adjusting the reactive power of the power system. FIG. 3 is a block diagram of a reactive power adjustment control device showing another embodiment of the present invention.
1a is a reactive power detection unit which is a power detection means for outputting the reactive power detection data 22 which is the current reactive power value as in FIG. 1, and 2a is reactive power change data when the phase adjuster was controlled by one tap last time. Calculate the correction amount from the dead band width data,
The dead band width data correction unit 3a, which outputs the corrected dead band width data 24, determines whether the reactive power detection data 22 is within the dead band region and determines the control command signal 26 to the phase adjuster.
The control logic unit 4a that outputs the signal is a phase adjuster that is a phase adjusting unit for adjusting and controlling the reactive power to a desired value. Reference numeral 23 is dead band initial data, and reference numeral 25 is reactive power reference data which is an adjustment target.

As in the example of FIG. 1, assuming that the current dead band width data is dF2n and the reactive power change data when the phase adjuster 4a is controlled by one tap last time is dQn, the correction amount e2 is given by the following equation (4). Become. e2 = dQn-dF2n (4) If e2 <0, corrected dead band width data dF2n + 1
Is given by the following equation (5). dF2n + 1 = dF2n− | e2 | (5) If e2 ≧ 0, the corrected dead band width data dF2n + 1
Is given by the following equation (6). dF2n + 1 = dF2n + | e2 | (6) In the same calculation as in the example of FIG. 1, when the reactive power variation data dQn when the phase adjuster 4a is controlled by one tap last time is the dead zone data dF2n or more. (E2 ≧ 0) is controlled by widening the dead band width, and when the reactive power change data dQn when the phase adjuster 4a is controlled by one tap last time is smaller than the dead band data dF2n (e2 <0), the dead band width is narrowed. Since the control is performed, it is possible to enhance the control accuracy while preventing the occurrence of the hunting phenomenon and adjust the reactive power to a desired value.

The example of FIG. 1 can be applied to the purpose of adjusting the voltage of the power system. FIG. 4 is a block diagram of a voltage adjustment control device showing another embodiment of the present invention. 1b is PT
The voltage detection unit 2b, which receives the input data 11 and outputs the voltage detection data 32 that is the current voltage value, obtains the correction amount from the voltage change data and the dead band width data when the voltage regulator is controlled by one tap last time. A dead band width data correction unit that outputs the corrected dead band width data 34, and a control logic unit 3b that determines whether or not the voltage detection data 32 is in the dead band region and outputs a control command signal 36 to the voltage regulator. Reference numeral 4b is a voltage regulator for adjusting and controlling the voltage to a desired value. 33 is dead band initial data, and 35 is voltage reference data that is an adjustment target.

As in the example of FIG. 1, when the current dead band width data is dF3n and the voltage change data when the voltage regulator 4b is controlled by one tap last time is dVn, the correction amount e3 is given by the following equation (7). . e3 = dVn-dF3n (7) If e3 <0, corrected dead band width data dF3n + 1
Is given by the following equation (8). dF3n + 1 = dF3n− | e3 | (8) If e3 ≧ 0, the corrected dead band width data dFn + 1 is given by the following equation (9). dF3n + 1 = dF3n + | e3 | (9) In the same calculation as in the example of FIG. 1, when the voltage change data dVn when the voltage regulator 4b is controlled by one tap last time is equal to or more than the dead zone data dF3n ( When e3 ≧ 0), the dead band width is expanded and controlled, and when the voltage change data dVn when the voltage regulator 4b is controlled by one tap last time is smaller than the dead band data dF3n (e3 <0), the dead band width is narrowed and controlled. Therefore, it is possible to increase the control accuracy and adjust the voltage to a desired value while preventing the occurrence of the hunting phenomenon.

FIG. 5 is a block diagram of an active power adjustment control device showing another embodiment of the present invention, FIG. 6 is a conceptual diagram showing a concept of operation of a control logic unit described later, and FIG. 7 is a control of the control logic unit. It is a figure which shows the flowchart of logic. In FIG. 5, the active power detector 1 and the phase adjuster 4 are the same as in the example of FIG. 3 c is a control logic unit, and the active power detection unit 1
The active power detection data 12 output from the device, the active power reference data 15 input from the external device, and the active power change data when the phase adjuster 4 was controlled by one tap last time are used for calculation, and based on the calculation result The control command signal 16 is output to the phase adjuster 4.

In FIG. 6, Pref is active power reference data 15, Pn is current active power detection data 12, Pn + 1.
Is the active power detection data 12 after the one-tap control of the phase adjustment of the phase adjuster 4, Pn-1 is the current active power detection data 12 one time before, and dPn is the one-tap control of the phase adjuster 4 last time. Change data of active power of dPn-1 is change data of active power when 1-tap control is performed two times before. An and Bn are current values of absolute values A and B, which will be described later, and A
n-1 and Bn-1 are the values one time before that.

Next, the operation of the control logic unit 3c shown in FIG. 5 will be described. As shown in FIG. 7, active power reference data 15 is set (step 200), active power detection data 12 is set (step 201), and it is determined whether or not it is the first control (step 202). In the case of the first control, 1-tap control is executed in order to obtain change data of active power when the phase adjuster 4 is 1-tap controlled (step 203). When the 1-tap control is executed, the change data of the active power when the 1-tap control is performed is obtained by comparing the active power detection data 12 before the control and the active power detection data 12 after the control inside the control logic unit 3c. be able to.
In the one-tap control, the active power reference data 15 and the active power detection data 12 are compared, and when the active power detection data 12 is lower than the active power reference data 15, the phase adjuster 4 is used.
1 tap increase control is determined, and active power reference data 15
When the active power detection data 12 is higher than that, the 1-tap lowering control is determined, and the control command signal 16 for instructing the 1-tap control in the determined direction is output to the phase adjuster 4 (step 203).

This completes the first control and returns to the set of active power detection data 12 changed by the 1-tap control (step 201), and the second and subsequent steps are step 2
After executing 02, the absolute values A and B, which are the original adjustment control steps, are calculated (step 204). As described above, assuming that the active power reference data 15 is Pref, the current active power detection data 12 is Pn, and the active power change data when the phase adjuster 4 is controlled by one tap last time is dPn, step 204 is expressed by the following equation ( The first absolute value A and the second absolute value B as in 10) and (11) are obtained. A = | Pref− (Pn + dPn) | (10) B = | Pref−Pn | (11)

The magnitude comparison of the first and second absolute values A and B is executed (step 205). If A <B, the next one-tap control is executed (step 206) so that the active power detection data 12 is valid. Since the power reference data 15 is approached, the 1-tap control is executed to output the control command signal 16 for instructing the phase adjuster 4 to perform the 1-tap control (step 206). This is because the current active power detection data 12 is Pn-1 in FIG.
And is equivalent to moving to the position of Pn. Subsequently, it is determined whether or not the tap position is at the upper limit or the lower limit (step 207). If the tap position is not at the upper limit or the lower limit, the process returns to step 201.

With this, one-time adjustment for controlling the phase adjuster 4 by one tap is completed, the calculation of the first and second absolute values A and B is executed again, and in the state of A <B. It is repeatedly controlled while the tap position of the phase adjuster 4 is not at the upper limit or the lower limit. If it is at the upper limit or the lower limit of the tap, no further operation can be performed, so the phase adjustment failure process is performed (step 209). When the phase adjustment fails, the active power reference data 15 is re-input from the external device and the phase adjuster 4
Return the tap of to resume control. Further, in the comparison of A and B (step 205), if A ≧ B, the next 1-tap control is performed (step 206), the active power detection data 12 becomes farther from the active power reference data 15. Without performing tap control, the phase adjustment is established to indicate that adjustment has been completed (step 208). In this case, when the active power detection data 12 is at the position Pn in FIG. 6 and 1 tap control increases dPn to Pn + 1, Pn
This is equivalent to moving away from Pref rather than the position of n. When the phase adjustment is once established and the control is desired to be restarted, the active power reference data 15 is re-input from the external device and the tap of the phase adjuster 4 is returned to the original state.

In this control, the first absolute value A, which is the difference between the active power detection data 12 after the one-tap control and the active power reference data 15, the current active power detection data 12 and the active power reference data 15 are used. The magnitude of the second absolute value B, which is the difference, is compared, and the active power detection data 1 after 1-tap control and 1
Since the control operation is determined depending on which of the two is closer to the active power reference data 15, the control accuracy is increased and the active power is adjusted to a desired value while preventing the occurrence of the hunting phenomenon without setting the dead zone region. You can

The example of FIG. 5 can also be applied to the purpose of adjusting the reactive power of the power system. FIG. 8 is a block diagram of a reactive power adjustment control device showing another embodiment of the present invention. The reactive power detector 1a which is the power detecting means and the phase adjuster 4a which is the phase adjusting means are the same as in the example of FIG. Reference numeral 3d is a control logic unit, which includes reactive power detection data 22 output from the reactive power detection unit 1a, reactive power reference data 25 input from an external device, and reactive power change data when the phaser 4a was previously controlled. And the control command signal 26 is output to the phase adjuster 4a based on the calculation result.

When the reactive power reference data 25 is Qref, the reactive power detection data 22 is Qn, and the reactive power change data when the phase adjuster 4a was controlled by one tap last time is dQn,
Similar to the example of FIG. 5, the calculations shown in the following equations (12) and (13) are performed. A2 = | Qref- (Qn + dQn) | ... (12) B2 = | Qref-Qn | ... (13) This control is reactive power detection data 22 after 1 tap control.
And the reactive power reference data 25 (Qref)
Absolute value A2, current reactive power detection data 22 (Qn)
And the reactive power reference data 25 (Qref)
The magnitude of the absolute value B2 of the power consumption is compared, and which of the control power and the current reactive power detection data 22 is the reactive power reference data 25.
Since the control operation is determined by whether it is close to (Qref),
As in the example of FIG. 5, it is possible to prevent the occurrence of the hunting phenomenon, improve the control accuracy, and adjust the reactive power to a desired value without setting the dead zone region.

The example of FIG. 5 can also be applied to the purpose of adjusting the voltage of the power system. FIG. 9 is a block diagram of a voltage adjustment control device showing another embodiment of the present invention. The voltage detector 1b and the voltage regulator 4b are the same as those in the example of FIG. 3e
Is a control logic unit, which uses the voltage detection data 32 output from the voltage detection unit 1b, the voltage reference data 35 input from an external device, and the voltage change data when the voltage regulator 4b was previously controlled by one tap. Calculation is performed, and the control command signal 36 is output to the voltage regulator 4b based on the calculation result.

Assuming that the voltage reference data 35 is Vref, the current voltage detection data 32 is Vn, and the voltage change data when the voltage regulator 4b is controlled by one tap last time is dVn, the following equation ( 14) and (15) are performed. A3 = | Vref- (Vn + dVn) | ... (14) B3 = | Vref-Vn | ... (15) This control is performed by the voltage detection data 32 and the voltage reference data 35 (Vref) after one tap control. The first absolute value A3, which is the difference between the current voltage detection data 32 (Vn) and the voltage reference data 35 (Vref), which is the difference between the second absolute value B3 and the current value after control, are compared. Since the control operation is determined depending on which of the voltage detection data 32 and the voltage reference data 35 (Vref) is close to the voltage reference data 35, the occurrence of the hunting phenomenon is prevented without setting the dead zone as in the example of FIG. And the voltage can be adjusted to the desired value.

[0036]

As described above, according to the present invention, the dead band width data at the next control is corrected from the change data of the power etc. when the phase adjusting means for adjusting the power etc. was controlled last time, and the optimum value is always optimized. Since the dead zone width data can be obtained and controlled, a hunting phenomenon does not occur, a highly accurate control result can be obtained, and it is possible to eliminate the need to frequently input the dead zone width initial data. In addition, the value of the power after control is calculated from the change data of the power when the phasing means was controlled the previous time, and either the detected data such as the power after control or the detected data such as the current power becomes the reference data. Since the control operation can be determined and controlled depending on whether they are close to each other, it is not necessary to set the dead zone width initial data, and a hunting phenomenon does not occur, and a highly accurate control result can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an active power adjustment control device showing an embodiment of the present invention.

FIG. 2 is a diagram showing a flow chart of control logic of a dead zone width data correction unit in FIG.

FIG. 3 is a block diagram of a reactive power adjustment control device showing another embodiment of the present invention.

FIG. 4 is a block diagram of a voltage adjustment control device showing another embodiment of the present invention.

FIG. 5 is a block diagram of an active power adjustment control device showing another embodiment of the present invention.

6 is a conceptual diagram showing a concept of operation of a control logic unit in FIG.

FIG. 7 is a diagram showing a flow chart of control logic of the control logic unit of FIG.

FIG. 8 is a block diagram of a reactive power adjustment control device showing another embodiment of the present invention.

FIG. 9 is a block diagram of a voltage adjustment control device showing another embodiment of the present invention.

FIG. 10 is a block diagram of a conventional active power adjustment control device.

11 is a conceptual diagram showing the basic concept of the control logic of FIG.

12 is a diagram showing a flow chart of control logic in the control logic unit of FIG.

[Explanation of symbols]

 1 Active Power Detection Section 2 Dead Band Width Data Correction Section 3 Control Logic Section 4 Phase Adjuster 10 CT Input Data 11 PT Input Data 12 Active Power Detection Data 13 Dead Band Width Initial Data 14 Corrected Dead Band Width Data 15 Active Power Reference Data 16 Control command signal 3c Control logic section A First absolute value B Second absolute value dFn Current dead band width data dFn + 1 Corrected dead band width data dPn Change data of active power when controlled last time e Correction amount ε Error amount

Claims (4)

[Claims] 1. A power detection means for detecting a power value such as an active power value or a reactive power value using CT input and PT input of a power system as input, and phase adjustment based on power detection data output from the power detection means. In the adjustment control device having a phase adjusting means for controlling and repeating the control until the power detection data reaches a desired value, a difference between the power detection data at the time of the previous control and the current power detection data. A dead band width data correction unit that calculates a correction amount from power change data and dead band width data that is a preset adjustment target range, and corrects and outputs the dead band width data, and the power detection data is the dead band width data. And a control logic unit for continuously controlling the phase adjusting means until the range of the dead band width composed of the dead band width data output from the correction unit is reached. Settling control unit. 2. A voltage detection means for detecting a voltage value using a PT input of a power system as an input, and a voltage adjustment means for performing adjustment control based on voltage detection data output from the voltage detection means. In the adjustment control device that repeats control until the detected data reaches a desired value, in the change data of the voltage which is the difference between the voltage detection data at the time of the previous control and the current voltage detection data and the preset target adjustment range. A dead band width data correction unit that calculates a correction amount from certain dead band width data, corrects the dead band width data and outputs the dead band width data, and a dead band width composed of the dead band width data output from the dead band width data correction unit. And a control logic unit for continuously controlling the voltage adjusting means until the range is reached. 3. A power detection means for detecting a power value such as an active power value or a reactive power value with CT input and PT input of a power system as input, and phase adjustment based on power detection data output from the power detection means. In the adjustment control device having a phase adjusting means for controlling and repeating the control until the power detection data reaches a desired value, the power detection data, the power reference data which is a preset adjustment target, and the previous control time. A first absolute value that is a difference between the power reference data and the power detection data after one-time control, using change data of power that is a difference between the power detection data and the current power detection data of A second difference that is the difference between the power reference data and the current power detection data
And a control logic unit for continuously controlling the phase adjusting means on condition that the first absolute value is smaller than the second absolute value. . 4. A voltage detection means for detecting a voltage value using a PT input of a power system as an input, and a voltage adjustment means for performing an adjustment control based on the voltage detection data output from the voltage detection means. In an adjustment control device that repeats control until the detection data reaches a desired value, the voltage detection data, voltage reference data that is a preset adjustment target, the voltage detection data at the time of the previous control, and the current voltage detection data. The first absolute value, which is the difference between the voltage reference data and the voltage detection data after one-time control, using the voltage change data that is the difference between the voltage reference data and the current voltage detection data. The second that is the difference
And a control logic unit for continuously controlling the voltage adjusting means on condition that the first absolute value is smaller than the second absolute value. .