JP2000184794A - Control device of variable speed pumped storage power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a following property for both of a power command value and a speed command value by selecting either power or speed according to the monitoring result of a monitoring means as the control target of an excitation control system. SOLUTION: A speed command calculator 11 stores a plurality of data tables for indicating the relationship between the power command value of a generator motor and the speed command value of a reversible pump-turbine. When the effective difference in elevation between the power command value and the reversible pump-turbine is inputted, a data table corresponding to it is selected and the speed of the reversible pump-turbine is calculated from the power command value. Then, a subtractor 12 subtracts an actual speed from the speed command value of the reversible pump- turbine, obtains the deviation between both of them, and outputs the deviation to a switcher 15 and a controller 17 when the speed command value calculator 11 calculates the speed command value of the reversible pump-turbine. A controller 16 executes PID operation with deviation as input when it receives the deviation from the switcher 15, cancels out the deviation, and generates a signal for controlling the opening of a guide vane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a variable-speed pumped-storage power generation system for controlling the power of a generator motor and the rotation speed of a pump turbine to optimal values.

[0002]

2. Description of the Related Art FIG. 14 is a block diagram showing a control device of a conventional variable-speed pumped-storage power generation system disclosed in Japanese Patent Publication No. 4-63635 (hereinafter referred to as "conventional example 1"). In the figure, reference numeral 1 denotes a water wheel characteristic function for calculating a pump wheel speed command value and a guide vane opening command value from the actual speed of the pump wheel, the power command value of the generator motor and the effective head of the pump wheel. Generator.

Next, the operation will be described. First, the turbine characteristic function generator 1 calculates a pump-turbine rotation speed command value from the actual rotation speed of the pump-turbine, a power command value of the generator motor, and an effective head of the pump-turbine, and performs excitation control on the rotation speed command value. Output to the system. Thus, the phase and the like of the AC exciting current for exciting the secondary winding of the generator motor are controlled, and the actual rotation speed of the pump turbine is controlled by the excitation control system.

[0004] The turbine characteristic function generator 1 calculates a guide vane opening command value from the actual rotation speed of the pump turbine, the power command value of the generator motor and the effective head of the pump turbine, and calculates the guide vane opening command value. The value is output to a servo control system (the servo control system is a control system for controlling the guide vanes). Thereby, the flow rate of the pump turbine is adjusted, the output of the pump turbine is controlled, and the power of the generator motor is controlled by the servo control system.

FIG. 16 is an explanatory diagram showing a control state when the power command value is increased stepwise. In order to raise the power of the generator motor stepwise, FIG.
As shown in FIG. 16A, when the electric power command value is changed, the rotational speed command value of the pump turbine and the guide vane opening command value are changed as shown in FIGS. 16B and 16C, respectively. Change.

As a result, the actual guide vane opening changes following the guide vane opening command value (FIG. 16).
(See (d)), the pump-turbine output changes with the increase in the actual guide vane opening (see FIG. 16 (e)), and the power of the generator motor becomes a value corresponding to the power command value.

The actual rotation speed of the pump turbine is shown in FIG.
As shown in (f), it is controlled at a high speed by the excitation control system. However, in order for the actual rotation speed to increase in accordance with the rotation speed command value of the pump-turbine, acceleration energy corresponding to the increase is required. This acceleration energy is supplemented by the output of the pump turbine or the electric power of the generator motor.
However, as described above, the pump-turbine output is determined by the guide vane opening, and therefore, the rising speed is slow. Therefore, the acceleration energy is supplemented by the power of the generator motor, and a phenomenon occurs in which the power of the generator motor temporarily decreases (see FIG. 16 (g)).

FIG. 15 is a block diagram showing a control device of a conventional variable-speed pumped-storage power generation system disclosed in JP-A-61-98197 (hereinafter, referred to as "conventional example 2"). In the figure, reference numeral 2 denotes a command value calculator for calculating a rotation speed command value and a guide vane opening command value of a pump turbine from a power command value of a generator motor and an effective head of a pump turbine, and 3 denotes a command value calculator 2 for calculating. A subtractor for calculating a deviation between the set rotation speed command value and the actual rotation speed of the pump turbine; 4 a rotation speed controller for generating a control signal for eliminating a deviation between the rotation speed command value and the actual rotation speed;
Is an adder for adding the control signal generated by the rotation speed controller 4 to the guide vane opening command value calculated by the command value calculator 2.

Next, the operation will be described. The command value calculator 2 stores a data table indicating a correspondence relationship between a power command value externally supplied to an excitation control system of a generator motor and a guide vane opening command value output to a servo control system of a pump turbine. (However, if the effective head of the pump turbine is different, the correspondence between the power command value and the guide vane opening degree command value changes, so that a plurality of data tables are stored according to the effective head of the pump turbine. ), When the power command value and the effective head of the pump turbine are input, a data table corresponding to the effective head is selected, and the guide vane opening command value is calculated from the power command value with reference to the data table.

The command value calculator 2 calculates a power command value,
A data table indicating the correspondence between the rotation speed command value of the pump turbine is also stored. (However, if the effective head of the pump turbine is different, the correspondence relationship between the power command value and the rotation speed command value changes. A plurality of data tables are stored in accordance with the effective head of the turbine), when the power command value and the effective head of the pump turbine are input, the data table corresponding to the effective head is selected, and the data table is referred to. The command value of the rotation speed of the pump turbine is calculated from the power command value.

When the command value calculator 2 calculates the rotation speed command value of the pump turbine, the subtractor 3 subtracts the actual rotation speed from the rotation speed command value of the pump turbine to obtain a deviation between the two. The deviation is output to the rotation speed controller 4. When receiving the deviation between the rotation speed command value and the actual rotation speed from the subtractor 3, the rotation speed controller 4 matches the actual rotation speed with the rotation speed command value.
A PID operation or the like using the deviation as an input signal is executed, and a control signal for eliminating the deviation is generated.

When the rotation speed controller 4 generates a control signal, the adder 5 adds the control signal to the guide vane opening command value calculated by the command value calculator 2. As a result, the servo control system controls the guide vane opening based on the addition result of the adder 5, so that the flow rate supplied to the pump turbine is adjusted, and the rotation speed of the pump turbine matches the rotation speed command value. I do. The power command value of the generator motor is output to the excitation control system, and the power of the generator motor is controlled so as to match the power command value.

FIG. 17 is an explanatory diagram showing a control state when the power command value is increased stepwise. In order to raise the power of the generator motor stepwise, FIG.
As shown in (a), when the electric power command value is changed, the command value of the rotation speed of the pump turbine and the command value of the guide vane opening degree are respectively changed as shown in FIGS. 17 (b) and 17 (c). Change.

The power of the generator motor is controlled at a high speed because the power command value is output to the excitation control system having a fast response, and changes as shown in FIG. 17 (g). On the other hand, the guide vane opening degree is controlled by a servo control system that has a slower response than the excitation control system, and changes as shown in FIG. 17D, and the pump-turbine output is accordingly changed as shown in FIG. )
It changes like Therefore, at the beginning of the change in the power command value, the output of the pump turbine becomes smaller than the power of the generator motor, and a phenomenon occurs in which the actual rotation speed of the pump turbine temporarily decreases (see FIG. 17 (f)). ).

[0015]

The control device of the conventional variable-speed pumped-storage power generation system is configured as described above. Therefore, the rotation speed of the pump-turbine is controlled by the excitation control system, and the power of the generator motor is controlled by the servo. When the control is performed by the control system, the rotation speed changes with good followability in accordance with the rotation speed command value, but the power temporarily changes in the opposite direction. On the other hand, when the power of the generator motor is controlled by the excitation control system and the rotation speed of the pump turbine is controlled by the servo control system, the power changes with good followability in accordance with the power command value. A phenomenon that changes in the opposite direction occurs. That is,
When the ability to follow the power command value is enhanced, the ability to follow the rotation speed command value is reduced, and when the ability to follow the rotation speed command value is enhanced, the ability to follow the power command value is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and a control device for a variable-speed pumped-storage power generation system capable of improving both the ability to follow a power command value and the ability to follow a rotation speed command value. The purpose is to obtain.

[0017]

A control device for a variable speed pumped storage power generation system according to the present invention selects one of electric power and rotation speed as a control target of an excitation control system according to a monitoring result of a monitoring means. It is like that.

A control device for a variable-speed pumped storage power generation system according to the present invention compares a deviation in rotation speed with a deviation in electric power and generates a control signal for an excitation control system based on the larger deviation. is there.

The control device for a variable speed pumped storage power generation system according to the present invention, when the deviation of the electric power is smaller than the set value,
A control signal for the excitation control system is generated based on the deviation of the rotational speed, and when the deviation of the power is larger than the set value,
A control signal for the excitation control system is generated based on the power deviation.

The control device for the variable speed pumped storage power generation system according to the present invention generates a control signal for the excitation control system based on the power deviation when the deviation of the rotation speed is smaller than the set value, and When the deviation is larger than the set value, a control signal for the excitation control system is generated based on the deviation of the rotation speed.

The control device for the variable speed pumped storage power generation system according to the present invention selects one of the electric power and the number of rotations as a control target of the excitation control system and the other of the servo control system according to the monitoring result of the monitoring means. Is selected as a control target.

The control device of the variable speed pumped storage power generation system according to the present invention compares the deviation of the rotational speed with the deviation of the electric power, generates a control signal for the excitation control system based on the larger deviation, and generates the control signal for the smaller one. The control signal for the servo control system is generated based on the deviation.

The control device for a variable speed pumped storage power generation system according to the present invention, when the deviation of the electric power is smaller than the set value,
A control signal for the excitation control system is generated based on the deviation of the rotation speed, and a control signal for the servo control system is generated based on the deviation of the power. , A control signal for the excitation control system is generated based on the deviation of the rotation speed, and a control signal for the servo control system is generated based on the deviation of the rotation speed.

When the deviation of the rotation speed is smaller than the set value, the control device for the variable speed pumped storage power generation system according to the present invention generates a control signal for the excitation control system based on the deviation of the electric power, A control signal for the servo control system is generated based on the deviation of the rotation speed, and when the deviation of the rotation speed is larger than a set value, a control signal for the excitation control system is generated based on the deviation of the rotation speed,
A control signal for the servo control system is generated based on the power deviation.

The control device of the variable speed pumped storage power generation system according to the present invention is configured to change the ratio between the power to be controlled by the excitation control system and the rotation speed according to the monitoring result of the monitoring means.

The control device of the variable speed pumped storage power generation system according to the present invention compares the deviation of the rotational speed with the deviation of the electric power, and multiplies each deviation by a ratio constant according to the comparison result. The deviation of the rotational speed and the deviation of the electric power are added to generate a control signal for the excitation control system.

In the control device for a variable speed pumped storage power generation system according to the present invention, the larger deviation is multiplied by a large ratio constant, and the smaller deviation is multiplied by a small ratio constant.

The control device for the variable speed pumped storage power generation system according to the present invention changes the ratio between the power to be controlled by the excitation control system and the rotation speed in accordance with the monitoring result of the monitoring means, and controls the servo control system. The ratio between the target power and the number of revolutions is changed.

The control device for the variable speed pumped storage power generation system according to the present invention generates a control signal for the excitation control system by adding the deviation of the rotation speed and the deviation of the electric power multiplied by the ratio constant by the first multiplication means. A first generator for generating a control signal for the servo control system by adding the deviation of the rotational speed and the deviation of the power multiplied by the ratio constant by the second multiplier. It is a thing.

The control device for a variable speed pumped storage power generation system according to the present invention multiplies the larger deviation by a large ratio constant and multiplies the smaller deviation by a small ratio constant.
And a second multiplier for multiplying the larger deviation by a small ratio constant and multiplying the smaller deviation by a large ratio constant.

The control device of the variable speed pumped storage power generation system according to the present invention is configured to select either the electric power or the rotation speed as a control target of the servo control system according to the monitoring result of the monitoring means. .

The control device of the variable speed pumped storage power generation system according to the present invention compares the deviation of the rotational speed with the deviation of the electric power and generates a control signal for the servo control system based on the larger deviation. is there.

The control device for a variable speed pumped storage power generation system according to the present invention, when the deviation of the electric power is smaller than the set value,
A control signal for the servo control system is generated based on the deviation of the rotational speed, and when the power deviation is larger than a set value, a control signal for the servo control system is generated based on the power deviation. It is.

The control device of the variable speed pumped storage power generation system according to the present invention generates a control signal for the servo control system based on the deviation of the power when the deviation of the rotation speed is smaller than the set value. When the deviation is larger than the set value, a control signal for the servo control system is generated based on the deviation of the rotation speed.

The control device for a variable speed pumped storage power generation system according to the present invention changes the ratio between the power to be controlled by the servo control system and the number of revolutions according to the monitoring result of the monitoring means.

The control device of the variable speed pumped storage power generation system according to the present invention compares the deviation of the rotational speed with the deviation of the electric power, and multiplies each deviation by a ratio constant according to the comparison result, while multiplying the deviation by the ratio constant. The deviation of the rotation speed and the deviation of the electric power are added to generate a control signal for the servo control system.

In the control device for a variable speed pumped storage power generation system according to the present invention, the larger deviation is multiplied by a large ratio constant, and the smaller deviation is multiplied by a small ratio constant.

The control device of the variable speed pumped storage power generation system according to the present invention is configured to change the control constants of the power and the number of revolutions to be controlled by the excitation control system according to the monitoring result of the monitoring means. .

The control device for a variable speed pumped storage power generation system according to the present invention sets a control constant in accordance with the deviation of the rotational speed and the deviation of the electric power, and generates a control signal for the excitation control system based on the control constant. It was made.

[0040] The control device for the variable speed pumped storage power generation system according to the present invention, the larger the deviation of the rotation speed and the deviation of the electric power, the larger the
A large control constant is set.

The control device for the variable speed pumped storage power generation system according to the present invention changes the control constants of the power and the number of revolutions to be controlled by the excitation control system and changes the control constants of the servo control system according to the monitoring result of the monitoring means. The control constants of the power and the number of revolutions to be controlled are changed.

The control device for the variable speed pumped storage power generation system according to the present invention generates the first control signal for the excitation control system based on the control constant set by the first setting means.
And a second generating means for generating a control signal for the servo control system based on the control constant set by the second setting means.

The control device for a variable speed pumped storage power generation system according to the present invention provides the following:
There are provided first setting means for setting a large control constant and second setting means for setting a smaller control constant as the deviation of the rotational speed and the deviation of the electric power are larger.

The control device of the variable speed pumped storage power generation system according to the present invention is configured to change the control constants of the power and the number of revolutions to be controlled by the servo control system according to the monitoring result of the monitoring means. .

The control device of the variable speed pumped storage power generation system according to the present invention sets a control constant in accordance with the deviation of the rotational speed and the deviation of the electric power, and generates a control signal for the servo control system based on the control constant. It was made.

According to the control device for a variable-speed pumped-storage power generation system of the present invention, the larger the deviation of the rotation speed and the deviation of the electric power are,
A large control constant is set.

The control device of the variable speed pumped storage power generation system according to the present invention is provided with limit value changing means for changing the limit value of the control signal for the electric power and the number of revolutions instead of the constant changing means.

The control device of the variable speed pumped storage power generation system according to the present invention is provided with setting means for setting a control constant according to the deviation of the rotational speed and the deviation of the electric power.

The control device of the variable speed pumped storage power generation system according to the present invention sets the limit value of the rotational speed deviation according to the deviation of the rotational speed, and sets the limit value of the electric power deviation according to the deviation of the electric power. If the rotation speed deviation or power deviation exceeds the rotation speed deviation limit value or power deviation limit value, the rotation speed deviation limit value or power deviation limit value is replaced with the rotation speed deviation or power deviation. This is provided with limit means for setting.

The control device of the variable speed pumped storage power generation system according to the present invention provides a control system based on the deviation of the rotational speed and the deviation of the electric power.
A control constant calculating means for calculating a control constant of the generating means is provided.

A control device for a variable speed pumped storage power generation system according to the present invention is configured to generate a control signal based on a frequency of a power system when the frequency changes.

[0052]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 1 of the present invention.
In the figure, reference numeral 11 denotes a rotation speed command value calculator (monitoring means, rotation speed deviation calculating means) for calculating a rotation speed command value of the pump turbine from the power command value of the generator motor and the effective head of the pump turbine, and 12 denotes a rotation speed command. A subtractor (monitoring means, rotation speed deviation calculating means) for calculating a difference between the rotation speed command value calculated by the value calculator 11 and the actual rotation speed, 13 is a guide vane based on the power command value of the generator motor and the effective head of the pump turbine. A guide vane opening command value calculator 14 for calculating the opening command value is a subtractor (monitoring means, power deviation calculating means) for calculating a deviation between the power command value of the generator motor and the actual power.

Reference numeral 15 denotes a switch (selecting means, generating means) for comparing the deviation of the number of revolutions outputted by the subtractor 12 with the deviation of the electric power outputted by the subtractor 14 and selecting the larger deviation.
A controller (generation means) for generating a control signal for the excitation control system based on the deviation selected by the switch 15;
7 is a controller (generating means) for generating a control signal for eliminating a deviation between the rotational speed command value and the actual rotational speed, and 18 is a guide vane opening command value calculator 13 for calculating the control signal generated by the controller 17. Is an adder that adds the calculated guide vane opening command value.

Next, the operation will be described. First, the rotation speed command value calculator 11 stores a data table indicating the correspondence between the power command value of the generator motor and the rotation speed command value of the pump turbine (however, the effective head of the pump turbine is different). Since the correspondence between the power command value and the rotation speed command value changes, a plurality of data tables are stored according to the effective head of the pump turbine.) When the power command value and the effective head of the pump turbine are input, A data table corresponding to the effective head is selected, and a rotation speed command value of the pump turbine is calculated from the power command value with reference to the data table.

When the rotation speed command value calculator 11 calculates the rotation speed command value of the pump turbine, the subtractor 12 calculates the rotation speed command value of the pump turbine from the rotation speed command value in order to grasp the operating state of the variable speed pumped-storage power generation system. The difference between the two is obtained by subtracting the actual rotation speed, and the difference is output to the switch 15 and the controller 17. On the other hand, the subtractor 14 also receives the power command value of the generator motor from the outside in order to grasp the operating state of the variable speed pumped-storage power generation system, and subtracts the actual power from the power command value to obtain a deviation between the two. The deviation is output to the switch 15.

The switching unit 15 includes the subtractor 12 and the subtractor 14
When the deviation of the rotational speed and the deviation of the electric power are received from, the two are compared and the larger deviation is selected. That is, when the deviation of the rotation speed is larger than the deviation of the power, the deviation of the rotation speed is output to the controller 16, and when the deviation of the power is larger than the deviation of the rotation speed, the deviation of the power is transmitted to the controller 16. Output.

When the controller 16 receives the deviation from the switch 15, the controller 16 executes a PID operation or the like using the deviation as an input signal, and generates a control signal for eliminating the deviation. The control signal is output to an electric excitation control system that responds faster than a mechanical servo control system that controls the guide vane opening. As a result, the larger one of the rotational speed deviation and the power deviation quickly follows the command value.

On the other hand, when the controller 17 receives the deviation of the rotation speed from the subtractor 12, the controller 17 uses the deviation as an input signal for the PID.
An arithmetic operation or the like is executed to generate a control signal for eliminating the deviation. When the controller 17 generates a control signal, the adder 18 adds the control signal to the guide vane opening command value calculated by the guide vane opening command value calculator 13 and performs servo control on the addition result. Output to the system. Thus, the guide vane opening is controlled so that the actual rotation speed of the pump turbine follows the rotation instruction value, and the actual rotation speed of the pump turbine gradually follows the rotation instruction value.

As is apparent from the above, the first embodiment
According to the configuration, the deviation of the rotation speed and the deviation of the power are compared, and a control signal for the excitation control system is generated based on the larger deviation. , The deviation of the rotation speed is quickly resolved,
If the power deviation is greater than the rotational speed deviation, the power deviation is quickly eliminated. Therefore, there is an effect that it is possible to improve both the followability to the power command value and the followability to the rotation speed command value.

In the first embodiment, an example is described in which the deviation of the rotational speed is added to the guide vane opening command value and output to the servo control system. However, the power deviation is added to the guide vane opening command value. The sum may be output to the servo control system. In the first embodiment, the switch 1
Although the controller 16 for the excitation control system is provided at the subsequent stage of 5, the controller which eliminates the power deviation and the controller which eliminates the rotational speed deviation may be provided separately before the switch 15.

Further, in the first embodiment, a description has been given of the case where the deviation of the rotational speed is compared with the deviation of the electric power, and a control signal to be output to the excitation control system is generated based on the larger deviation. At normal times when the deviation is smaller than the set value,
A control signal to be output to the excitation control system based on the rotation speed deviation is generated, and when the power deviation is larger than a set value, a control signal to be output to the excitation control system based on the power deviation is generated. Is also good. Conversely, in a normal state where the rotation speed deviation is smaller than the set value, a control signal to be output to the excitation control system based on the power deviation is generated. May be generated based on the control signal to be output to the excitation control system.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switch 15 (the switching operation between the rotation speed deviation and the power deviation) may be made valid.
Incidentally, in the first embodiment, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 2 FIG. 2 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 2 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 19 is a subtractor 12
A switch (selecting means) that compares the deviation of the number of revolutions output by the controller with the deviation of the power output by the subtractor 14 and outputs the larger deviation to the controller 16 while outputting the smaller deviation to the controller 17. , Generating means).

Next, the operation will be described. In the first embodiment, the difference between the rotation speed output from the subtractor 12 and the difference between the power output from the subtractor 14 is compared, and the larger deviation is output to the controller 16. The smaller deviation may be output to the controller 17.

As a result, the larger deviation is output to the excitation control system having a quick response, so that the larger deviation is quickly eliminated as in the first embodiment. Is also added to the guide vane opening command value and output to the servo control system, the response to the command value is slow, but the guide vane opening is controlled to follow the command value, and power and The rotation speed is controlled in a well-balanced manner.

In the second embodiment, the switch 19
The controllers 16 and 17 are provided at the subsequent stage.
A controller that eliminates the power deviation and a controller that eliminates the rotational speed deviation may be provided separately in the stage preceding the step 9.

Further, in the second embodiment, the deviation of the rotational speed is compared with the deviation of the electric power, a control signal to be output to the excitation control system is generated based on the larger deviation, and the control signal is generated based on the smaller deviation. Although the control signal to be output to the servo control system has been described, in a normal case where the power deviation is smaller than the set value, the control signal to be output to the excitation control system based on the rotation speed deviation is generated, and A control signal to be output to the servo control system is generated based on the power deviation, and when the power deviation is greater than a set value, a control signal to be output to the excitation control system is generated based on the power deviation and the rotation of the control signal is generated. A control signal to be output to the servo control system based on the number deviation may be generated. Conversely, when the rotation speed deviation is smaller than the set value, a control signal is output to the excitation control system based on the power deviation and output to the servo control system based on the rotation speed deviation. A signal is generated, and when the deviation of the rotation speed becomes larger than a set value, a control signal to be output to the excitation control system based on the deviation of the rotation speed is generated and output to the servo control system based on the deviation of the power. A control signal may be generated.

Further, there is provided a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency, and when the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switch 19 (the switching operation between the rotation speed deviation and the power deviation) may be made valid.
Incidentally, in the second embodiment, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 3 FIG. 3 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 3 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 20 is a subtractor 12
A ratio calculator (ratio changing means, multiplying means) for comparing the deviation of the number of revolutions output by the controller with the deviation of the power output by the subtractor 14 and calculating a ratio constant according to the comparison result. The gain (ratio changing means, multiplication means) for multiplying the power deviation by the ratio constant related to the power deviation calculated by the formula (2), the ratio constant related to the rotation speed deviation calculated by the ratio calculator 20 to the rotation speed deviation. The gains to be multiplied (ratio changing means, multiplying means), 23 are gain 21 and gain 2
It is an adder (generation means) for adding the result of multiplication by 2.

Next, the operation will be described. In the first embodiment, the difference between the rotation speed output from the subtractor 12 and the difference between the power output from the subtractor 14 is compared, and the larger deviation is output to the controller 16. The deviation is compared with the deviation of the rotation speed, and the larger deviation is multiplied by a larger ratio and the smaller deviation is multiplied by a smaller ratio, and the mixed signal is sent to the controller 1 for the excitation control system.
6 may be output.

As a result, the larger the deviation is, the more strongly controlled by the excitation control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation is, the smaller the multiplication ratio is, but the smaller the deviation is, the smaller the deviation is output to the controller 16 for the excitation control system.

In the third embodiment, an example is described in which the deviation of the rotation speed is added to the guide vane opening command value and output to the servo control system. However, the power deviation is added to the guide vane opening command value. The sum may be output to the servo control system. In the third embodiment, the adder 2
Although the controller 16 for the excitation control system is provided at the subsequent stage of 3, the controller for eliminating the power deviation and the controller for eliminating the rotational speed deviation may be individually provided at the preceding stage of the adder 23.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, not only the deviation of the rotational speed and the deviation of the power but also the deviation of the frequency is multiplied by a ratio. In addition, a control signal to be output to the excitation control system may be generated based on the three mixed signals (when the frequency decreases, the ratio of the signal that increases the power increases, and when the frequency increases, the power decreases. Reduce the proportion of the signal to be reduced). Further, when the frequency deviation exceeds the set value, the ratio calculating operation of the ratio calculator 20 may be enabled. Incidentally, the third embodiment
Although the present invention is applied to the case of the power generation operation, it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 4 FIG. 4 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 4 of the present invention. In the figure, the same reference numerals as in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 24 is a subtractor 12
A ratio calculator (ratio changing means, first multiplying means, second multiplying means) for comparing the deviation of the number of revolutions outputted by the controller with the deviation of the electric power outputted by the subtractor 14 and calculating a ratio constant according to the comparison result. Means, 25 are gains (ratio changing means, first multiplying means) for multiplying the power deviation by a ratio constant relating to the power deviation calculated by the ratio calculator 24, and 26 is the rotation calculated by the ratio calculator 24. A gain (ratio changing means, first multiplying means) for multiplying the deviation of the rotational speed by a ratio constant relating to the number deviation, and 27 an adder (first generating means) for adding the result of multiplication of the gain 25 and the gain 26 is there.

28 is a gain (ratio changing means, second multiplying means) for multiplying the power deviation by a ratio constant relating to the power deviation calculated by the ratio calculator 24, and 29 is a rotation calculated by the ratio calculator 24. A gain (ratio changing means, second multiplying means) for multiplying the deviation of the rotational speed by a ratio constant relating to the number deviation, and 30 an adder (second generating means) for adding the multiplication result of the gain 28 and the gain 29 is there.

Next, the operation will be described. In the third embodiment, the deviation of the electric power and the deviation of the rotational speed are compared, and the larger deviation is multiplied by the larger ratio and the smaller deviation is multiplied by the small ratio. Although the output to the controller 16 for the system has been shown,
Further, the larger deviation may be multiplied by a smaller ratio, and the smaller deviation may be multiplied by a larger ratio, and the mixed signal may be output to the controller 17 for the servo control system.

As a result, the larger the deviation is, the more strongly controlled by the excitation control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation is, the smaller the multiplication ratio is, but the smaller the deviation is, the smaller the deviation is output to the controller 16 for the excitation control system. Further, the larger deviation is multiplied by a smaller ratio, and the smaller deviation is multiplied by a larger ratio, and the mixed signal is output to the controller 17 for the servo control system. Are controlled in a well-balanced manner.

In the fourth embodiment, the adder 2
At the subsequent stage of 7, 30, a controller 16, 1 for the excitation control system is provided.
Although the controller 7 is provided, a controller for eliminating the power deviation and a controller for eliminating the rotational speed deviation may be provided separately at a stage preceding the adders 27 and 30.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, not only the deviation of the rotational speed and the deviation of the power but also the deviation of the frequency is multiplied by a ratio. Together with generating a control signal to be output to the excitation control system based on the three mixed signals,
A control signal to be output to the servo control system may be generated (for example, in an excitation control system, when the frequency decreases, the ratio of the signal that increases the power increases, and when the frequency increases, the signal that decreases the power decreases. On the other hand, in the servo control system, when the frequency decreases, the ratio of the signal for increasing the power decreases, and when the frequency increases, the ratio of the signal for decreasing the power increases.
Further, when the frequency deviation exceeds the set value, the ratio calculating operation of the ratio calculator 24 may be made valid. Incidentally, in the fourth embodiment, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 5 FIG. 5 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 5 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 31 is a subtractor 12
Is a switch (selecting means, generating means) for comparing the deviation of the number of revolutions outputted by the controller with the deviation of the power outputted by the subtractor 14 and selecting the larger deviation.

Next, the operation will be described. In the first embodiment, the difference between the rotation speed output from the subtractor 12 and the difference between the electric power output from the subtractor 14 is compared, and the larger deviation is output to the controller 16. May be output to the controller 17.

As a result, a control signal generated based on the larger deviation plus the guide vane opening command value is output to the servo control system, so that the larger deviation is controlled by the servo control system. Is suppressed. Further, in the excitation control system, the power is controlled based on the deviation between the power command value and the actual power, so that the actual power is controlled to follow the power command value. However, the present invention is not limited to the control of the electric power, and the rotational speed may be controlled based on the deviation of the rotational speed.

In the fifth embodiment, the switch 31
Although the controller 17 for the servo control system is provided in the subsequent stage, a controller for eliminating the power deviation and a controller for eliminating the rotational speed deviation may be provided separately in the preceding stage of the switch 31.

Further, in the fifth embodiment, a description has been given of a case where the deviation of the rotational speed is compared with the deviation of the electric power, and a control signal to be output to the servo control system is generated based on the larger deviation. In the normal case where the deviation is smaller than the set value, a control signal to be output to the servo control system is generated based on the rotation speed deviation, and when the power deviation is larger than the set value, the control signal is transmitted to the servo control system based on the power deviation. A control signal to be output may be generated. Conversely, when the rotation speed deviation is smaller than the set value, a control signal to be output to the servo control system is generated based on the power deviation, and when the rotation speed deviation becomes larger than the set value, the rotation speed deviation becomes larger. May be generated based on the control signal to be output to the servo control system.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided, and when the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switching unit 31 (the switching operation of the rotation speed deviation and the power deviation) may be made effective.
Incidentally, although the fifth embodiment is applied to the case of the power generation operation, it goes without saying that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 6 FIG. FIG. 6 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 6 of the present invention. In the figure, the same reference numerals as those in FIG. 32 is the subtractor 12
Is a ratio calculator (ratio changing means, multiplying means) for comparing the deviation of the number of revolutions output by the controller with the deviation of the power output from the subtractor 14 and calculating a ratio constant according to the comparison result. A gain (ratio changing means, multiplying means) for multiplying the power deviation by the ratio constant relating to the power deviation calculated by the formula (3), the ratio constant relating to the rotational speed deviation calculated by the ratio calculator 32 to the deviation of the rotational speed. The gains to be multiplied (ratio changing means, multiplying means), 35 are gain 33 and gain 3
4 is an adder (generation means) for adding the result of multiplication by 4.

Next, the operation will be described. In the third embodiment, the deviation of the electric power and the deviation of the rotational speed are compared, and the larger deviation is multiplied by the larger ratio and the smaller deviation is multiplied by the small ratio. Although the output to the controller 16 for the system has been shown,
The mixed signal is sent to the controller 17 for the servo control system.
May be output.

As a result, the larger the deviation is, the more strongly controlled by the servo control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation is, the smaller the multiplication ratio is, but it is output to the controller 17 for the servo control system, so that some deviation suppression effect occurs. Further, in the excitation control system, the power is controlled based on the deviation between the power command value and the actual power, so that the actual power is controlled to follow the power command value. However, the present invention is not limited to the control of the electric power, and the rotational speed may be controlled based on the deviation of the rotational speed.

In the sixth embodiment, the adder 35
Although the controller 17 for the servo control system is provided in the subsequent stage, a controller for eliminating the power deviation and a controller for eliminating the rotational speed deviation may be provided separately in the preceding stage of the adder 35.

Further, a subtractor for calculating a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, not only the deviation of the rotational speed and the deviation of the power but also the deviation of the frequency is multiplied by a ratio. In addition, a control signal to be output to the servo control system may be generated based on the three mixed signals (when the frequency decreases, the ratio of the signal that increases the power increases, and when the frequency increases, the power increases. Reduce the proportion of the signal to be reduced). Further, when the frequency deviation exceeds the set value, the ratio calculating operation of the ratio calculator 32 may be enabled. Incidentally, although the sixth embodiment is applied to the case of the power generation operation, it goes without saying that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 7 FIG. FIG. 7 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 7 of the present invention. In the figure, the same reference numerals as those in FIG. 36 is a subtractor 12
A control constant calculator (constant changing means, setting means) for calculating a control constant in accordance with the deviation of the number of revolutions output by the controller and the deviation of the electric power output by the subtractor 14, and a control 37 calculated by the control constant calculator 36. A variable control constant controller (constant changing means, setting means) for processing power deviation according to a constant,
Numeral 38 denotes a variable control constant controller (constant changing means, setting means) for processing the deviation of the rotational speed in accordance with the control constant calculated by the control constant calculator 36, and 39 denotes a processing result of the variable control constant controller 37 and the variable. An adder (generating means) for adding the processing result of the control constant controller 38.

Next, the operation will be described. In the seventh embodiment, processing is performed in accordance with a control constant that is appropriate for the sensitivity to each of the differences in consideration of the power deviation and the rotation speed deviation. That is, those with a large deviation are processed according to a control constant of a large value, and those with a small deviation are processed according to a control constant of a small value, and a control signal for an excitation control system is generated based on the added mixed signal. To be generated.

Thus, the larger the deviation is, the more strongly controlled by the excitation control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation is, the smaller the processing result of the variable control constant controller is, but the smaller the deviation is, the smaller the deviation is outputted to the controller 16 for the excitation control system.

Since the control signal generated based on the deviation of the rotation speed is added to the guide vane opening command value and output to the servo control system, the actual rotation speed of the pump turbine follows the rotation speed command value. The guide vane opening is controlled so that In this case, if all the control constants with the smaller deviation are set to zero, the same effect as switching to the larger deviation is obtained as in the first embodiment. Further, depending on how to calculate each control constant, the control constant can be set to a ratio corresponding to the magnitude of the deviation, and the same effect as in the third embodiment can be obtained.

Although the seventh embodiment has been described with reference to the case where the deviation of the rotation speed is added to the guide vane opening command value and output to the servo control system, the power deviation is converted to the guide vane opening command value. The sum may be output to the servo control system. In the seventh embodiment, the adder 3
Although the controller 16 for the excitation control system is provided at the subsequent stage of 9, the controller for eliminating the power deviation and the controller for eliminating the rotational speed deviation may be individually provided at the preceding stage of the adder 39.

Further, a subtracter for obtaining a deviation between the frequency of the power system and the reference frequency is provided. If the deviation exceeds a set value, control is performed based on not only the deviation of the rotational speed and the deviation of the power but also the deviation of the frequency. The constant may be changed (when the frequency decreases, the control constant of the signal that increases the power increases, and when the frequency increases, the control constant of the signal that decreases the power decreases). Further, when the frequency deviation exceeds the set value, the calculation operation of the control constant calculator 36 may be made valid. By the way, in the seventh embodiment, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 8 FIG. FIG. 8 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 8 of the present invention. In the figure, the same reference numerals as in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 40 is a subtractor 12
A control constant calculator (constant changing means, first setting means, second setting means) for calculating a control constant in accordance with the deviation of the number of revolutions outputted by the controller and the deviation of the power outputted by the subtractor 14; A variable control constant controller (constant changing means, first setting means) for processing the power deviation according to the control constant calculated by the constant calculator 40;
Variable control constant controller (constant changing means,
Is an adder (first generating means) for adding the processing result of the variable control constant controller 41 and the processing result of the variable control constant controller 42.

Reference numeral 44 denotes a variable control constant controller (constant changing means, second setting means) for processing the power deviation in accordance with the control constant calculated by the control constant calculator 40;
Is a variable control constant controller (constant changing means, second setting means) for processing the deviation of the rotational speed according to the control constant calculated by the control constant calculator 40, and 46 is a processing result of the variable control constant controller 44. And an adder (second generating means) for adding the processing result of the variable control constant controller 45 to the processing result.

Next, the operation will be described. In the seventh embodiment, the processing with the larger deviation is performed according to the control constant of the larger value, and the processing with the smaller deviation is processed according to the control constant of the smaller value, and the excitation control is performed based on the combined signal. Although the control signal generation for the system has been shown, the one with a large deviation is processed according to the control constant of a small value, and the one with a small deviation is processed according to the control constant of a large value. A control signal for the servo control system may be generated based on the mixed signal.

As a result, the larger the deviation is, the more strongly controlled by the excitation control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation is, the smaller the processing result of the variable control constant controller is, but the smaller the deviation is, the smaller the deviation is outputted to the controller 16 for the excitation control system. Further, processing is performed using a small control constant for the large deviation and a large control constant for the small deviation, and the mixed signal is output to the controller 17 for the servo control system. Servo control system is controlled in good balance.

In this case, if all the control constants of the smaller deviation are set to zero, the same effect as switching to the larger deviation is obtained as in the second embodiment. Also,
Depending on how each control constant is calculated, the control constant can be set to a ratio according to the magnitude of the deviation, and the same effect as in the fourth embodiment can be obtained.

In the eighth embodiment, the adder 4
A controller 16 for the excitation control system and a controller 17 for the servo control system are provided downstream of the adders 43 and 46, and a controller for eliminating the power deviation and a rotational speed deviation are provided before the adders 43 and 46. May be individually provided.

Further, a subtracter for obtaining a deviation between the frequency of the power system and the reference frequency is provided. If the deviation exceeds a set value, control is performed based on not only the deviation of the rotation speed and the deviation of the power but also the deviation of the frequency. The constant may be changed (for example, in the excitation control system, the control constant of the signal for increasing the power is increased when the frequency is decreased, and the control constant of the signal for decreasing the power is decreased when the frequency is increased. On the other hand, in the servo control system, when the frequency decreases, the control constant of the signal that increases the power decreases, and when the frequency increases, the control constant of the signal that decreases the power increases. When the frequency deviation exceeds the set value, the calculation operation of the control constant calculator 40 may be made valid. By the way, in the eighth embodiment, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 9 FIG. FIG. 9 is a block diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 9 of the present invention. In the figure, the same reference numerals as those in FIG. 47 is a subtractor 12
, A control constant calculator (constant changing means, setting means) for calculating a control constant according to the deviation of the number of revolutions output by the controller and the deviation of the power output by the subtractor 14, and a control 48 calculated by the control constant calculator 47. A variable control constant controller (constant changing means, setting means) for processing power deviation according to a constant,
Reference numeral 49 denotes a variable control constant controller (constant changing means, setting means) for processing the deviation of the rotational speed in accordance with the control constant calculated by the control constant calculator 47, and reference numeral 50 denotes the processing result of the variable control constant controller 48 and the variable. It is an adder (generation means) for adding the processing result of the control constant controller 49.

Next, the operation will be described. In the seventh embodiment, the processing with a large deviation is performed according to a control constant having a large value, and the processing with a small deviation is performed according to a control constant having a small value. Excitation control is performed based on the combined signal. Although the control signal for the system is generated, the control signal for the servo control system may be generated based on the combined signal.

Thus, the larger the deviation, the stronger the control is performed by the servo control system. Therefore, the larger the deviation, the greater the effect of suppressing the deviation. The smaller the deviation, the smaller the processing result of the variable control constant controller, but the smaller the deviation, the smaller the deviation is output to the controller 17 for the servo control system. Further, in the excitation control system, the power is controlled based on the deviation between the power command value and the actual power, so that the actual power is controlled to follow the power command value. In this case, if all the control constants of the smaller deviation are set to zero, the same effect as switching to the larger deviation is obtained as in the fifth embodiment. Further, depending on how to calculate each control constant, the control constant can be set to a ratio corresponding to the magnitude of the deviation, and the same effect as in the sixth embodiment can be obtained.

In the ninth embodiment, the adder 50
Although the controller 17 for the servo control system is provided in the subsequent stage, a controller for eliminating the power deviation and a controller for eliminating the rotational speed deviation may be provided separately in the preceding stage of the adder 50.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. If the deviation exceeds a set value, control is performed based on not only the deviation of the rotational speed and the deviation of the power but also the deviation of the frequency. The constant may be changed (when the frequency decreases, the control constant of the signal that increases the power increases, and when the frequency increases, the control constant of the signal that decreases the power decreases). Further, when the deviation of the frequency exceeds the set value, the calculation operation of the control constant calculator 47 may be made valid. By the way, in Embodiment 9, the present invention is applied to the case of the power generation operation, but it goes without saying that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 10 FIG. FIG. 10 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 10 of the present invention. In the figure, the same reference numerals as those in FIG. Reference numeral 51 denotes an upper / lower limit value calculator (limit value changing means) which calculates a limit value according to the deviation of the number of revolutions output from the subtractor 12 and calculates a limit value according to the deviation of the electric power output from the subtracter 14. , 52 output the power deviation to the adder 39 if the deviation of the power output from the subtractor 14 is within the range of the limit value, and add the limit value if the deviation of the power deviates from the limit value. The limiter (limit value changing means) 53 outputs to the adder 39 the deviation of the rotation speed output from the subtracter 12 to the adder 39 if the deviation of the rotation speed is within the range of the limit value. When the deviation of the number deviates from the limit value, the limiter (limit value changing means) outputs the limit value to the adder 39.

Next, the operation will be described. In the above seventh to ninth embodiments, the control constant is set according to the difference between the rotation speed output from the subtractor 12 and the difference between the power output from the subtractor 14. A limit value corresponding to the deviation may be calculated, and when the deviation of the rotation speed or the deviation of the power deviates from the limit value, the deviation of the rotation speed or the deviation of the power may be limited to the limit value.

That is, by increasing the limit value (to increase the width between the upper limit value and the lower limit value) for the one with a large deviation, and by decreasing the limit value for the one with a small deviation (the upper limit value and the lower limit value). Lower the width of the lower limit),
A signal having a large deviation is not greatly limited by the limiter, and a large signal is output. On the other hand, a signal having a small deviation is output as a small signal limited by the limiter.

As a result, a control signal based on a mixed signal obtained by adding these signals is output to the excitation control system, so that the larger the deviation is, the more strongly controlled by the excitation control system. The larger the effect is, the smaller the deviation is, although the signal is small, the signal is input to the excitation control system, so that a slight deviation suppression effect occurs.

Further, since the control signal generated based on the deviation of the rotation speed is added to the guide vane opening command value and output to the servo control system, the actual rotation speed of the pump turbine follows the rotation speed command value. The guide vane opening is controlled so that In this case, if the upper limit and the lower limit of the limit value with the smaller deviation are set to zero, the same effect as switching to the larger deviation is obtained as in the first embodiment.
Further, depending on how to calculate each limit value, each deviation can be set to a value similar to a value obtained by multiplying each deviation by a ratio according to the magnitude of the deviation by the limiter, and the same effect as in the third embodiment can be obtained. Is obtained.

In the tenth embodiment, a description has been given of the case where the deviation of the rotational speed is added to the guide vane opening command value and output to the servo control system, but the power deviation is added to the guide vane opening command value. The sum may be output to the servo control system. Further, in the tenth embodiment, the controller 16 for the excitation control system is provided after the adder 39, but the controller for eliminating the power deviation and the rotational speed deviation are provided before the adder 39. Controllers may be provided individually.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. If the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency as well as the deviation of the rotation speed and the deviation of the power. A control signal to be output to the control system may be generated (when the frequency decreases, the limit value of the signal that increases the power increases, and when the frequency increases, the limit value of the signal that decreases the power increases). . Further, when the frequency deviation exceeds the set value, the calculation operation of the upper and lower limit value calculator 51 may be made valid. Incidentally, in Embodiment 10, the present invention is applied to the case of the power generation operation, but it is needless to say that the same effect can be obtained by applying to the case of the pumping operation.

Embodiment 11 FIG. FIG. 11 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 11 of the present invention. In the figure, the same reference numerals as in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. Numeral 54 denotes a control constant calculator (setting means) for calculating a control constant according to the difference between the number of revolutions output from the subtractor 12 and the difference between the power output from the subtractor 14, and 55 is calculated by the control constant calculator 54. A variable control constant controller (setting means) for processing power deviation according to the control constant, and 56 is a control constant calculator 5
4 is a variable control constant controller (setting means) for processing the deviation of the number of revolutions in accordance with the control constant calculated in Step 4.

Next, the operation will be described. In the eleventh embodiment, processing is performed according to a control constant appropriate for the sensitivity to each of the deviations in consideration of the deviation of the power and the deviation of the rotation speed. That is, a process with a large deviation is processed according to a control constant of a large value, and a process with a small deviation is processed according to a control constant of a small value.

Then, the signal processed by the variable control constant controller 55 and the signal processed by the variable control constant controller 56 are compared, and the larger signal is selected. That is, if the signal processed by the variable control constant controller 55 is larger than the signal processed by the variable control constant controller 56, the signal processed by the variable control constant controller 55 is output to the controller 16, If the signal processed by the variable control constant controller 56 is larger than the signal processed by the variable control constant controller 55, the signal processed by the variable control constant controller 56 is output to the controller 16. As a result, the larger one of the rotational speed deviation and the power deviation quickly follows the command value.

Further, the control signal generated based on the signal processed by the variable control constant controller 56 is added to the guide vane opening command value and output to the servo control system. The guide vane opening is controlled so that the rotation speed follows the rotation speed command value. In the eleventh embodiment, the control signal generated based on the signal processed by the variable control constant controller 56 is added to the guide vane opening command value and output to the servo control system. Alternatively, a control signal generated based on the signal processed by the variable control constant controller 55 may be added to the guide vane opening command value and output to the servo control system. Further, in the eleventh embodiment, the controller 16 for the excitation control system is provided after the switch 15, but the controller for eliminating the power deviation and the rotational speed deviation are disposed before the switch 15. Controllers may be provided individually.

Further, in the eleventh embodiment, the signal processed by the variable control constant controller 55 is compared with the signal processed by the variable control constant controller 56, and the larger signal is selected. However, at the normal time when the power deviation is smaller than the set value, a control signal to be output to the excitation control system based on the signal processed by the variable control constant controller 56 is generated, and when the power deviation becomes larger than the set value, A control signal to be output to the excitation control system may be generated based on the signal processed by the variable control constant controller 55. Conversely, when the deviation of the rotation speed is smaller than the set value, a control signal to be output to the excitation control system based on the signal processed by the variable control constant controller 55 is generated. When it becomes larger, the variable control constant controller 5
Alternatively, a control signal to be output to the excitation control system may be generated based on the signal after the processing in Step 6.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switch 15 (the switching operation between the rotation speed deviation and the power deviation) may be made valid.

Incidentally, although the eleventh embodiment is applied to the case of the power generation operation, it is needless to say that the same effect can be obtained by applying to the case of the pumping operation. In addition,
Although the eleventh embodiment has been described with reference to the first embodiment, the present invention is not limited to this. The eleventh embodiment may be applied to the second to sixth embodiments.

Embodiment 12 FIG. FIG. 12 is a configuration diagram showing a control device for a variable speed pumped-storage power generation system according to Embodiment 12 of the present invention. In the figure, the same reference numerals as those in FIG. 57 is an upper / lower limit value calculator (limit means) which calculates a limit value according to the deviation of the power output from the subtractor 12 and calculates a limit value according to the deviation of the electric power output from the subtractor 14; If the deviation of the power output by the subtracter 14 is within the range of the limit value, the deviation of the power is output to the switch 15. If the deviation of the power deviates from the limit value, the limit value is switched to the switch 15. If the deviation of the rotation speed output by the subtracter 12 is within the range of the limit value, the limiter 59 outputs the deviation of the rotation speed to the switching device 15, and the deviation of the rotation speed is A limiter (limit means) that outputs the limit value to the switch 15 when it deviates from the limit value.

Next, the operation will be described. In the twelfth embodiment, a limit value corresponding to the deviation of the rotation speed or the deviation of the power is calculated, and when the deviation of the rotation speed or the deviation of the power deviates from the limit value, the deviation of the rotation speed or the deviation of the power is limited. Restrict to values.

That is, by increasing the limit value (to increase the width between the upper limit value and the lower limit value) for those having a large deviation, and by decreasing the limit value for the one having a small deviation (the upper limit value and the lower limit value). Lower the width of the lower limit),
A signal having a large deviation is not greatly limited by the limiter, and a large signal is output. On the other hand, a signal having a small deviation is output as a small signal limited by the limiter.

Then, the output signal of the limiter 58 is compared with the output signal of the limiter 59, and the larger output signal is selected. That is, if the output signal of the limiter 58 is larger than the output signal of the limiter 59, the output signal of the limiter 58 is output to the controller 16, and if the output signal of the limiter 59 is larger than the output signal of the limiter 58, 59
Is output to the controller 16. As a result, the larger one of the rotational speed deviation and the power deviation quickly follows the command value.

Further, since the control signal generated based on the output signal of limiter 59 is added to the guide vane opening command value and output to the servo control system, the actual rotation speed of the pump turbine is changed to the rotation speed command value. The guide vane opening is controlled so as to follow. In the twelfth embodiment, the control signal generated based on the output signal of the limiter 59 is added to the guide vane opening command value and output to the servo control system. May be added to the guide vane opening command value and output to the servo control system. In the twelfth embodiment, the controller 16 for the excitation control system is provided after the switch 15.
A controller that eliminates the power deviation and a controller that eliminates the rotational speed deviation may be individually provided at a stage preceding the step 5.

Further, in the twelfth embodiment, the output signal of the limiter 58 is compared with the output signal of the limiter 59, and
The one that selects the larger output signal has been shown,
Normally, when the power deviation is smaller than the set value, the limiter 5
9, a control signal to be output to the excitation control system is generated based on the output signal of the limiter 58, and a control signal to be output to the excitation control system is generated based on the output signal of the limiter 58 when the power deviation becomes larger than a set value. You may. Conversely, in a normal state where the rotation speed deviation is smaller than the set value, a control signal to be output to the excitation control system based on the output signal of the limiter 58 is generated. A control signal to be output to the excitation control system based on the output signal may be generated.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided, and when the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switch 15 (the switching operation between the rotation speed deviation and the power deviation) may be made valid.

In the twelfth embodiment, the present embodiment is applied to the case of the power generation operation. However, it goes without saying that the same effect can be obtained by applying to the case of the pumping operation. In addition,
Although the twelfth embodiment has been described with reference to the first embodiment, the present invention is not limited to this and may be applied to the second to sixth embodiments.

Embodiment 13 FIG. FIG. 13 is a configuration diagram showing a control device for a variable speed pumped storage power generation system according to Embodiment 13 of the present invention. In the figure, the same reference numerals as those in FIG. Reference numeral 60 denotes a control constant calculator (control constant calculating means) for calculating the control constants of the controllers 16 and 17 based on the deviation of the rotational speed output from the subtractor 12 and the deviation of the power output from the subtractor 14.

Next, the operation will be described. In the first embodiment, the difference between the rotation speed output from the subtractor 12 and the difference between the power output from the subtractor 14 is compared, and the larger deviation is output to the controller 16. The control constants of the controllers 16 and 17 may be calculated based on the deviation of the rotation speed and the deviation of the power so that the control signal for the excitation control system and the control signal for the servo control system are optimal control signals. Good.

In the thirteenth embodiment, the control signal generated based on the deviation of the rotation speed is added to the guide vane opening command value and output to the servo control system. May be added to the guide vane opening command value and output to the servo control system. In the thirteenth embodiment, the controller 1 for the excitation control system is provided after the switch 15.
Although the controller 6 is provided, a controller for eliminating the power deviation and a controller for eliminating the rotational speed deviation may be provided separately at a stage preceding the switch 15.

Further, in the thirteenth embodiment, a description has been given of a case where the deviation of the rotational speed is compared with the deviation of the power and the larger output signal is selected. A control signal to be output to the excitation control system is generated based on the deviation of the rotational speed, and a control signal to be output to the excitation control system is generated based on the power deviation when the power deviation becomes larger than a set value. You may. Conversely, in a normal state where the rotation speed deviation is smaller than the set value, a control signal to be output to the excitation control system is generated based on the power deviation, and when the rotation speed deviation becomes larger than the set value, A control signal to be output to the excitation control system based on the deviation may be generated.

Further, a subtractor for obtaining a deviation between the frequency of the power system and the reference frequency is provided. When the deviation exceeds a set value, the excitation is performed based on the deviation of the frequency instead of the deviation of the rotational speed or the deviation of the power. A control signal to be output to the control system may be generated (control is performed such that power is increased when the frequency is decreased, and power is decreased when the frequency is increased). Further, when the frequency deviation exceeds the set value, the switching operation of the switch 15 (the switching operation between the rotation speed deviation and the power deviation) may be made valid.

Incidentally, although the embodiment 13 is applied to the case of the power generation operation, it goes without saying that the same effect can be obtained by applying to the case of the pumping operation. In addition,
Although the thirteenth embodiment has been described with reference to the first embodiment, the present invention is not limited to this and may be applied to the second to sixth embodiments.

[0137]

As described above, according to the present invention, according to the monitoring result of the monitoring means, either the power or the rotation speed is selected as the control target of the excitation control system. There is an effect that both the followability to the command value and the followability to the rotational speed command value can be improved.

According to the present invention, the deviation of the rotational speed is compared with the deviation of the power, and the control signal for the excitation control system is generated based on the larger deviation. This has the effect of improving both the followability to the rotational speed command value.

According to the present invention, when the power deviation is smaller than the set value, a control signal for the excitation control system is generated based on the rotational speed deviation, and when the power deviation is larger than the set value, Since the control signal for the excitation control system is generated based on the deviation of the power, there is an effect that both the followability to the power command value and the followability to the rotational speed command value can be improved.

According to the present invention, when the deviation of the rotational speed is smaller than the set value, a control signal for the excitation control system is generated based on the deviation of the electric power. Is configured to generate a control signal for the excitation control system based on the deviation of the rotation speed, so that there is an effect that both the followability to the power command value and the followability to the rotation speed command value can be improved.

According to the present invention, one of the power and the rotation speed is selected as a control target of the excitation control system and the other is selected as a control target of the servo control system in accordance with the monitoring result of the monitoring means. With this configuration, both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved, and the excitation control system and the servo control system can be controlled in a well-balanced manner.

According to the present invention, the deviation of the rotational speed is compared with the deviation of the electric power, a control signal for the excitation control system is generated based on the larger deviation, and the control signal for the servo control system is generated based on the smaller deviation. Since the control signal is generated, both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved, and the excitation control system and the servo control system can be controlled in a well-balanced manner. There is.

According to the present invention, when the power deviation is smaller than the set value, a control signal for the excitation control system is generated based on the rotational speed deviation, and the control signal for the servo control system is generated based on the power deviation. When a control signal is generated and the power deviation is larger than a set value, a control signal for the excitation control system is generated based on the power deviation, and a control for the servo control system is generated based on the rotation speed deviation. Since it is configured to generate a signal, it is possible to improve both the followability with respect to the power command value and the followability with respect to the rotational speed command value, and also achieve an effect that the excitation control system and the servo control system can be controlled in a well-balanced manner. is there.

According to the present invention, when the deviation of the rotational speed is smaller than the set value, a control signal for the excitation control system is generated based on the deviation of the electric power, and the servo control system is generated based on the deviation of the rotational speed. Generates a control signal for
When the deviation of the rotation speed is larger than the set value, a control signal for the excitation control system is generated based on the deviation of the rotation speed, and a control signal for the servo control system is generated based on the deviation of the power. With this configuration, both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved, and the excitation control system and the servo control system can be controlled in a well-balanced manner.

According to the present invention, the ratio between the power to be controlled by the excitation control system and the rotation speed is changed in accordance with the monitoring result of the monitoring means. There is an effect that both the followability to the command value can be improved.

According to the present invention, the deviation of the rotational speed is compared with the deviation of the electric power, and each deviation is multiplied by a ratio constant according to the comparison result, while the deviation of the rotational speed multiplied by the ratio constant and the electric power are multiplied. Are added to generate a control signal for the excitation control system, so that there is an effect that both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved.

According to the present invention, the larger deviation is multiplied by the larger ratio constant, and the smaller deviation is multiplied by the smaller ratio constant. There is an effect that both the follow-up properties to the value can be improved.

According to the present invention, the ratio between the power to be controlled by the excitation control system and the rotation speed is changed according to the monitoring result of the monitoring means, and the power and the rotation speed to be controlled by the servo control system are changed. Since the ratio is changed, both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved, and the excitation control system and the servo control system can be controlled in a well-balanced manner. is there.

According to the present invention, the first generating means for generating the control signal for the excitation control system by adding the deviation of the rotational speed and the deviation of the power multiplied by the ratio constant by the first multiplying means, Since the second multiplying means is configured to add the deviation of the rotation speed multiplied by the ratio constant and the deviation of the electric power to generate a control signal for the servo control system, the electric power command is provided. It is possible to improve both the follow-up performance with respect to the value and the follow-up performance with respect to the rotational speed command value, and it is possible to control the excitation control system and the servo control system in a well-balanced manner.

According to the present invention, the first multiplying means multiplies the larger deviation by a large ratio constant, and multiplies the smaller deviation by a small ratio constant. And a second multiplying means for multiplying the smaller deviation by a larger ratio constant is provided, so that both the followability to the power command value and the followability to the rotational speed command value can be improved. In addition, there is an effect that the excitation control system and the servo control system can be controlled in a well-balanced manner.

According to the present invention, either the power or the number of revolutions is selected as a control target of the servo control system according to the monitoring result of the monitoring means. This has the effect of improving both the followability to the numerical command values.

According to the present invention, the deviation of the number of revolutions is compared with the deviation of the power, and the control signal for the servo control system is generated based on the larger deviation. This has the effect of improving both the followability to the rotational speed command value.

According to the present invention, when the power deviation is smaller than the set value, a control signal for the servo control system is generated based on the rotation speed deviation, and when the power deviation is larger than the set value, Since the control signal for the servo control system is generated based on the deviation of the electric power, there is an effect that both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved.

According to the present invention, when the deviation of the rotation speed is smaller than the set value, a control signal for the servo control system is generated based on the deviation of the electric power. Is configured to generate a control signal for the servo control system based on the deviation of the number of revolutions, so that there is an effect that both the ability to follow the power command value and the ability to follow the revolution number command value can be improved.

According to the present invention, the ratio between the power to be controlled by the servo control system and the rotation speed is changed in accordance with the monitoring result of the monitoring means. There is an effect that both the followability to the command value can be improved.

According to the present invention, the deviation of the rotational speed is compared with the deviation of the electric power, and each deviation is multiplied by a ratio constant according to the comparison result, while the deviation of the rotational speed multiplied by the ratio constant and the electric power are multiplied. Are added to generate a control signal for the servo control system, so that there is an effect that both the ability to follow the power command value and the ability to follow the rotational speed command value can be improved.

According to the present invention, the larger deviation is multiplied by the larger ratio constant, and the smaller deviation is multiplied by the smaller ratio constant. There is an effect that both the follow-up properties to the value can be improved.

According to the present invention, since the control constants of the power and the number of revolutions to be controlled by the excitation control system are changed in accordance with the monitoring result of the monitoring means, the ability to follow the power command value and the rotation This has the effect of improving both the followability to the numerical command values.

According to the present invention, the control constant is set according to the deviation of the rotational speed and the deviation of the electric power, and the control signal for the excitation control system is generated based on the control constant. There is an effect that both the followability with respect to the rotation speed and the followability with respect to the rotational speed command value can be enhanced.

According to the present invention, the larger the deviation of the rotation speed and the deviation of the electric power, the larger the control constant is set. Therefore, both the followability to the power command value and the followability to the rotation speed command value are improved. There is an effect that can be increased.

According to the present invention, the control constants of the power and the number of revolutions to be controlled by the excitation control system are changed according to the monitoring result of the monitoring means, and the power and the number of revolutions to be controlled by the servo control system are changed. , It is possible to improve both the followability to the power command value and the followability to the rotational speed command value, and to control the excitation control system and the servo control system in a well-balanced manner. effective.

According to the present invention, the first generating means for generating a control signal for the excitation control system based on the control constant set by the first setting means, and the control constant set by the second setting means And a second generation means for generating a control signal for the servo control system based on the control signal, so that both the followability to the power command value and the followability to the rotation speed command value can be improved,
There is an effect that the excitation control system and the servo control system can be controlled in a well-balanced manner.

According to the present invention, the first setting means for setting a larger control constant as the deviation of the rotational speed and the deviation of the power are larger, and a smaller control constant as the deviation of the rotational speed and the deviation of the electric power are larger. Since the configuration is such that the second setting means for setting is provided, it is possible to improve both the followability with respect to the power command value and the followability with respect to the rotational speed command value, and to control the excitation control system and the servo control system in a balanced manner. There is an effect that can be.

According to the present invention, since the control constants of the power and the number of revolutions to be controlled by the servo control system are changed in accordance with the monitoring result of the monitoring means, the ability to follow the power command value and the rotation This has the effect of improving both the followability to the numerical command values.

According to the present invention, the control constant is set in accordance with the deviation of the rotational speed and the deviation of the power, and the control signal for the servo control system is generated based on the control constant. There is an effect that both the followability with respect to the rotation speed and the followability with respect to the rotational speed command value can be enhanced.

According to the present invention, the larger the deviation of the rotational speed and the deviation of the electric power, the larger the control constant is set. Therefore, both the followability to the power command value and the followability to the rotational speed command value are improved. There is an effect that can be increased.

According to the present invention, since the limit value changing means for changing the limit value of the control signal for the power and the number of revolutions is provided instead of the constant changing means, the followability to the power command value is further improved. This has the effect of improving both the followability to the rotational speed command value.

According to the present invention, since the setting means for setting the control constant in accordance with the deviation of the rotational speed and the deviation of the electric power is provided, it is possible to further follow the power command value and to follow the rotational speed command value. There is an effect that both sexes can be enhanced.

According to the present invention, the limit value of the rotational speed deviation is set according to the deviation of the rotational speed, and the limit value of the power deviation is set according to the deviation of the electric power. When the deviation deviates from the limit value of the rotational speed deviation or the limit value of the power deviation, a limit means for replacing the limit value of the rotational speed deviation or the limit value of the power deviation with the rotational speed deviation or the power deviation is provided. Therefore, there is an effect that both the ability to follow the power command value and the ability to follow the rotation speed command value can be improved.

According to the present invention, the control constant calculating means for calculating the control constant of the generating means is provided on the basis of the deviation of the rotational speed and the deviation of the electric power. This has the effect of improving both the followability to the rotational speed command value.

According to the present invention, when the frequency of the electric power system changes, the control signal is generated based on the frequency. Therefore, both the ability to follow the power command value and the ability to follow the rotational speed command value are improved. There is an effect that can be increased.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 1 of the present invention.

FIG. 2 is a configuration diagram illustrating a control device of a variable speed pumped storage power generation system according to Embodiment 2 of the present invention.

FIG. 3 is a configuration diagram illustrating a control device of a variable speed pumped storage power generation system according to Embodiment 3 of the present invention.

FIG. 4 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 4 of the present invention.

FIG. 5 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 5 of the present invention.

FIG. 6 is a configuration diagram illustrating a control device of a variable speed pumped storage power generation system according to Embodiment 6 of the present invention.

FIG. 7 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 7 of the present invention.

FIG. 8 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 8 of the present invention.

FIG. 9 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 9 of the present invention.

FIG. 10 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 10 of the present invention.

FIG. 11 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 11 of the present invention.

FIG. 12 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 12 of the present invention.

FIG. 13 is a configuration diagram showing a control device of a variable speed pumped storage power generation system according to Embodiment 13 of the present invention.

FIG. 14 is a configuration diagram showing a control device of a conventional variable speed pumped storage power generation system.

FIG. 15 is a configuration diagram showing a control device of a conventional variable speed pumped storage power generation system.

FIG. 16 is an explanatory diagram showing the behavior of the control device of the conventional variable speed pumped storage power generation system.

FIG. 17 is an explanatory diagram showing the behavior of the control device of the conventional variable speed pumped storage power generation system.

[Explanation of symbols]

11 rotation speed command value calculator (monitoring means, rotation speed deviation calculating means), 12 subtractor (monitoring means, rotation speed deviation calculating means), 14 subtractor (monitoring means, power deviation calculating means),
15, 19, 31 switch (selecting means, generating means), 1
6, 17 controller (generation means), 20, 32 ratio calculator (ratio changing means, multiplication means), 21, 22, 33, 3
4 gain (ratio changing means, multiplication means), 23, 35,
39, 50 adders (generation means), 24 ratio calculators (ratio change means, first multiplication means, second multiplication means), 2
5,26 gain (ratio changing means, first multiplying means),
27, 43 adders (first generating means), 28, 29
Gain (ratio changing means, second multiplying means), 30, 46
Adders (second generating means), 36, 47 control constant calculators (constant changing means, setting means), 37, 38, 48,
49 variable control constant controller (constant changing means, setting means), 40 control constant calculator (constant changing means, first setting means, second setting means), 41, 42 variable control constant controller (constant changing means) , First setting means), 44, 45
Variable control constant controller (constant changing means, second setting means), 51 upper and lower limit value calculator (limit value changing means),
52, 53 limiter (limit value changing means), 54
Control constant calculator (setting means), 55, 56 Variable control constant controller (setting means), 57 Upper / lower limit value calculator (limit means), 58, 59 Limiter (limit means), 6
0 Control constant calculator (control constant calculation means).

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H590 AA21 AA23 CA12 CC10 CE01 DD43 EA07 EA10 EA14 EB07 EB14 EB20 EB21 EB29 FA01 FA06 FA08 GA06 GA09 GA10 GB05 HA06 HA09 HA22 HA27 JA02 JA08 JA12 JA13 JA14 JA15 JA16 JB02 JB18

Claims (35)

[Claims] An operation state of a variable speed pumped storage power generation system for controlling power of a generator motor having a primary winding connected to a power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor is monitored. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs the monitoring and a selection unit that selects one of the electric power and the number of revolutions as a control target of an excitation control system in accordance with a monitoring result of the monitoring unit. 2. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating the deviation between the value and the actual power; and a difference between the rotation speed calculated by the rotation speed deviation calculating means and the power difference calculated by the power deviation calculating means. And a generating means for generating a control signal for the excitation control system based on the control signal. 3. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power; and, if the power deviation calculated by the power deviation calculating means is smaller than a set value, the rotational speed deviation calculated by the rotational speed deviation calculating means. And generating means for generating a control signal for the excitation control system based on the deviation of the power if the power deviation is greater than a set value. Control device of pumped storage power generation system. 4. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed; A power deviation calculating means for calculating a deviation between the value and the actual power; and a power deviation calculated by the power deviation calculating means when the rotation speed deviation calculated by the rotation speed deviation calculating means is smaller than a set value. And generating means for generating a control signal for the excitation control system based on the deviation of the rotation speed when the deviation of the rotation speed is greater than a set value. Control device for variable speed pumped storage power generation system. 5. The operating state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to a power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. Monitoring means, and selecting means for selecting one of the power and the number of revolutions as a control target of an excitation control system and selecting the other as a control target of a servo control system in accordance with a monitoring result of the monitoring means. Control device for the variable speed pumped storage power generation system. 6. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating the deviation between the value and the actual power; and a difference between the rotation speed calculated by the rotation speed deviation calculating means and the power difference calculated by the power deviation calculating means. A control device for a variable-speed pumped-storage power generation system, comprising: a generation unit that generates a control signal for an excitation control system based on a small deviation and generates a control signal for a servo control system based on a smaller deviation. 7. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power; and, if the power deviation calculated by the power deviation calculating means is smaller than a set value, the rotational speed deviation calculated by the rotational speed deviation calculating means. A control signal for the excitation control system is generated based on the control signal, and a control signal for the servo control system is generated based on the deviation of the power.
Generating means for generating a control signal for the excitation control system based on the deviation of the power and generating a control signal for the servo control system based on the deviation of the rotational speed when the deviation of the power is larger than the set value; A control device for a variable speed pumped storage power generation system comprising: 8. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power; and a power deviation calculated by the power deviation calculating means when the rotation speed deviation calculated by the rotation speed deviation calculating means is smaller than a set value. A control signal for the excitation control system is generated based on the rotation speed, and a control signal for the servo control system is generated based on the deviation of the rotation speed. Generating means for generating a control signal for the excitation control system based on the deviation and generating a control signal for the servo control system based on the deviation of the power. Control system. 9. An operation state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to a power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs monitoring; and a ratio changing unit that changes a ratio between the power to be controlled by the excitation control system and the rotation speed in accordance with a monitoring result of the monitoring unit. 10. A rotation speed deviation calculating means for calculating a rotation speed command value of a pump turbine from a power command value of a generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power, and a deviation of the rotation speed calculated by the rotation speed deviation calculating means and a deviation of the power calculated by the power deviation calculating means are compared. Multiplying means for multiplying each deviation by the corresponding ratio constant, and adding the deviation of the rotational speed and the deviation of the power multiplied by the ratio constant by the multiplying means,
A control device for a variable-speed pumped-storage power generation system, comprising: a generation unit that generates a control signal for an excitation control system. 11. The variable speed pumped-storage power generation system according to claim 10, wherein the multiplication means multiplies the larger deviation by a large ratio constant and multiplies the smaller deviation by a small ratio constant. Control device. 12. An operation state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to an electric power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. The ratio between the power and the rotation speed controlled by the excitation control system is changed, and the ratio between the power and the rotation speed controlled by the servo control system is changed according to the monitoring result of the monitoring unit and the monitoring result of the monitoring unit. A control device for a variable speed pumped storage power generation system, comprising: 13. A rotation speed deviation calculating means for calculating a rotation speed command value of a pump turbine from a power command value of a generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power, and a deviation of the rotation speed calculated by the rotation speed deviation calculating means and a deviation of the power calculated by the power deviation calculating means are compared. First multiplication means for multiplying each deviation by the corresponding ratio constant, and a deviation of the rotation speed and a deviation of the power multiplied by the ratio constant by the first multiplication means are added to generate a control signal for the excitation control system. A first generating unit that generates the power, a deviation of the rotation speed calculated by the rotation speed deviation calculating unit and a deviation of the power calculated by the power deviation calculating unit, and a ratio constant according to the comparison result is calculated. Multiply the deviation A second multiplying means, and a second generating means for generating a control signal for the servo control system by adding the deviation of the rotational speed and the deviation of the power multiplied by the ratio constant by the second multiplying means. Control device for the variable speed pumped storage power generation system. 14. The first multiplying means multiplies the larger deviation by a larger ratio constant, and multiplies the smaller deviation by a smaller ratio constant, while the second multiplying unit multiplies the larger deviation by a larger ratio constant. Multiplying by a small ratio constant, and multiplying a smaller deviation by a large ratio constant.
4. The control device of the variable speed pumped storage power generation system according to 3. 15. An operation state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to a power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs monitoring; and a selection unit that selects one of power and rotation speed as a control target of a servo control system in accordance with a monitoring result of the monitoring unit. 16. A rotation speed deviation calculating means for calculating a rotation speed command value of a pump turbine from a power command value of a generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating the deviation between the value and the actual power; and a difference between the rotation speed calculated by the rotation speed deviation calculating means and the power difference calculated by the power deviation calculating means. And a generating means for generating a control signal for the servo control system based on the control signal. 17. A rotation speed deviation calculating means for calculating a rotation speed command value of a pump turbine from a power command value of a generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power; and, if the power deviation calculated by the power deviation calculating means is smaller than a set value, the rotational speed deviation calculated by the rotational speed deviation calculating means. Generating a control signal for the servo control system based on the power deviation, and generating a control signal for the servo control system based on the power deviation when the power deviation is greater than a set value. Control device of pumped storage power generation system. 18. A rotation speed deviation calculating means for calculating a rotation speed command value of a pump turbine from a power command value of a generator motor, and calculating a deviation between the rotation speed command value and an actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power; and a power deviation calculated by the power deviation calculating means when the rotation speed deviation calculated by the rotation speed deviation calculating means is smaller than a set value. And generating means for generating a control signal for the servo control system based on the deviation of the rotation speed when the deviation of the rotation speed is greater than a set value. Control device for variable speed pumped storage power generation system. 19. The operating state of a variable speed pumped-storage power generation system that controls the power of a generator motor having a primary winding connected to a power system and the number of rotations of a pump turbine connected to a drive shaft of the generator motor. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs a monitoring operation; 20. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between the value and the actual power, and a deviation of the rotation speed calculated by the rotation speed deviation calculating means and a deviation of the power calculated by the power deviation calculating means are compared. Multiplying means for multiplying each deviation by the corresponding ratio constant, and adding the deviation of the rotational speed and the deviation of the power multiplied by the ratio constant by the multiplying means,
A control device for a variable-speed pumped-storage power generation system, comprising: a generation unit that generates a control signal for a servo control system. 21. The variable speed pumped-storage power generation system according to claim 20, wherein the multiplication means multiplies the larger deviation by a large ratio constant and multiplies the smaller deviation by a small ratio constant. Control device. 22. An operation state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to an electric power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs the control, and a constant changing unit that changes a control constant of the power and the number of revolutions to be controlled by the excitation control system according to the monitoring result of the monitoring unit. 23. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed, and a power command for the generator motor. A power deviation calculating means for calculating a deviation between a value and an actual power; and a control constant is set according to the deviation of the rotation speed calculated by the rotation speed deviation calculating means and the power deviation calculated by the power deviation calculating means. A control device for a variable-speed pumped-storage power generation system, comprising: setting means; and generating means for generating a control signal for an excitation control system based on the control constant set by the setting means. 24. The control device for a variable-speed pumped-storage power generation system according to claim 23, wherein the setting means sets a larger control constant as the deviation of the rotation speed and the deviation of the electric power are larger. 25. An operating state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to an electric power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. A control means for controlling the power and the number of revolutions to be controlled by the excitation control system, and a control constant for the power and the number of revolutions to be controlled by the servo control system according to the monitoring result of the monitoring means. Control device for a variable speed pumped storage power generation system, comprising: 26. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed. A power deviation calculating means for calculating a deviation between a value and an actual power; and a control constant is set according to the deviation of the rotation speed calculated by the rotation speed deviation calculating means and the power deviation calculated by the power deviation calculating means. First setting means, first generating means for generating a control signal for an excitation control system based on the control constant set by the first setting means, and a rotational speed calculated by the rotational speed deviation calculating means Setting means for setting a control constant according to the deviation of the power and the power deviation calculated by the power deviation calculating means; and a servo control system based on the control constant set by the second setting means. And a second generating means for generating a control signal for the pumping power generation system. 27. The first setting means sets a larger control constant as the deviation of the rotation speed and the deviation of the electric power are larger, and
27. The control device for a variable-speed pumped-storage power generation system according to claim 26, wherein the setting means sets a smaller control constant as the deviation of the rotation speed and the deviation of the electric power are larger. 28. An operating state of a variable speed pumped-storage power generation system for controlling electric power of a generator motor having a primary winding connected to a power system and a rotation speed of a pump turbine connected to a drive shaft of the generator motor. A control device for a variable-speed pumped-storage power generation system, comprising: a monitoring unit that performs control, and constant changing unit that changes control constants of power and rotation speed, which are control targets of a servo control system, according to a monitoring result of the monitoring unit. 29. A rotation speed deviation calculating means for calculating a rotation speed command value of the pump turbine from a power command value of the generator motor, and calculating a deviation between the rotation speed command value and the actual rotation speed. A power deviation calculating means for calculating a deviation between a value and an actual power; and a control constant is set according to the deviation of the rotation speed calculated by the rotation speed deviation calculating means and the power deviation calculated by the power deviation calculating means. A control device for a variable-speed pumped-storage power generation system, comprising: setting means; and generating means for generating a control signal for a servo control system based on the control constant set by the setting means. 30. The control device for a variable-speed pumped-storage power generation system according to claim 29, wherein the setting means sets a larger control constant as the deviation of the rotation speed and the deviation of the electric power are larger. 31. The apparatus according to claim 22, further comprising limit value changing means for changing the limit value of the control signal for the power and the number of revolutions, instead of the constant changing means.
29. A control device for a variable speed pumped storage power generation system according to claim 28. 32. Setting means for setting a control constant in accordance with the deviation of the rotational speed calculated by the rotational speed deviation calculating means and the deviation of the power calculated by the power deviation calculating means. A control device for a variable-speed pumped-storage power generation system according to claim 2, claim 20, claim 10, claim 13, claim 16, or claim 20. 33. A limit value of a rotational speed deviation is set according to the rotational speed deviation calculated by the rotational speed deviation calculating means, and a power deviation limit is set according to the power deviation calculated by the power deviation calculating means. If the deviation of the rotational speed or the deviation of the power deviates from the limit value of the rotational speed deviation or the limit value of the power deviation, the limit value of the rotational speed deviation or the limit value of the power deviation is set to the deviation of the rotational speed or 2. The apparatus according to claim 2, further comprising limit means for replacing the power deviation.
The control device for a variable-speed pumped-storage power generation system according to claim 16 or 20. 34. A control constant calculating means for calculating a control constant of the generating means on the basis of the deviation of the rotation speed calculated by the rotation speed deviation calculating means and the power deviation calculated by the power deviation calculating means. The control device for a variable-speed pumped-storage power generation system according to any one of claims 2, 6, 10, 10, 13, 16, 20, 23, 26, or 29, characterized in that: 35. The power generation system according to claim 2, wherein when the frequency of the power system changes, the generation unit generates the control signal based on the frequency. 16, Claim 20, Claim 23, Claim 2
30. The control device for a variable-speed pumped-storage power generation system according to claim 6 or 29.