WO2015001651A1 - Frequency control system and frequency control method - Google Patents

Abstract

Devices (10) calculate a total value for power output from generators in a natural energy grid inside a local area, calculate a short-cycle restriction range for the local area on the basis of the adjusting force of non-natural energy grid generators, apply an area number to the total value and the short-cycle restriction range, and send same to a device (30). The device (30) receives this information from devices (10) in each area, calculates a short-cycle fluctuation value from the total value for each area, sends 1 as an adjustment gain value if the short-cycle fluctuation value has deviated in at least one area, to the device (10) in the relevant area, and sends a value greater than 1 as the adjustment gain value to devices (10) in other areas if said areas are in a normal state. The devices (10) calculate an area requirement (AR) on the basis of a frequency deviation (ΔＦ), a tie line tidal deviation (ΔＰT), and adjustment gain values for power grids arranged in the relevant areas, and distributes the area requirement to non-natural energy grid generators.

Description

Frequency control system and frequency control method

The present invention relates to a frequency control system and a frequency control method suitable for maintaining a frequency in a power system in which a plurality of power systems are linked by a linkage line (hereinafter referred to as a linked system).

When operating an electric power system, it is necessary to always maintain the system frequency at a specified value even when there is a load change. For this reason, the output of the generator is adjusted according to the load change. This is called frequency adjustment.
Currently, each power system in Japan in Japan is operated based on the following two systems as frequency control systems.
As a first method, a frequency deviation (ΔF) is detected regardless of the grid line power flow, the generator output is adjusted so as to reduce the detected frequency deviation ΔF, and only the system frequency is maintained at a specified value. There is a frequency control (FFC) system.
As a second method, there is a frequency bias interconnection power flow control (TBC) method (hereinafter referred to as a TBC method).

In this TBC method, the frequency deviation (ΔF) and the interconnecting line power flow deviation (ΔPT) are detected, and the detected frequency deviation (ΔF) and the interconnecting line power flow deviation (ΔPT) are used in the own system (own system). Calculate the demand and supply adjustment amount necessary to adjust the load fluctuation amount in the region corresponding to the above, that is, the regional demand power (hereinafter referred to as the regional demand amount (AR)), and according to the calculated demand amount The generator output is adjusted (Patent Documents 1 to 3).
Note that this TBC method automatically changes the setting value of the interconnection power flow control in proportion to the frequency deviation Δf in response to a load change in the other interconnected system, and sends out the support power. It also functions to cooperate in system frequency adjustment.

In the TBC method, it is executed based on the following procedure (process).
In other words, the regional required power (AR) can be calculated by the following equation (1) using the frequency deviation (ΔF), the interconnection power flow deviation (ΔPT), and K: system constant K.
AR = −KΔf + ΔPT (1)
From this equation (1), the regional required power AR is a positive value, that is, the interconnection power flow deviation (ΔPT) is larger than the product (K · Δf) of the frequency deviation Δf and the system constant K (ΔP> K · Δf). ), The generator output of the own system is increased, and conversely, the regional required power AR is a negative value, that is, the interconnection power flow deviation (ΔPT) is the product of the frequency deviation Δf and the system constant K (K · When smaller than (Δf) (ΔPT <K · Δf), it means that the generator output of the own system is lowered.

The regional required power AR is filtered by exponential smoothing using the past regional required power AR, and the output change speed ratio or output of the generator is adjusted for all the generators whose load frequency is adjusted. It is distributed according to the margin ratio.

JP 2001-238355 A JP 2002-209336 A JP 2005-20916 A

In recent years, the introduction of solar power generation, wind power generation, tidal power generation, etc. using natural energy has been rapidly progressing. When the output power using natural energy is linked to an existing thermal power generation system or hydropower generation power system, or the output power using natural energy is connected to a grid connection system by, for example, 60 Hz power companies. There are times when it is related.
By the way, the above-described power generation using natural energy is a clean power source that does not emit carbon dioxide CO ₂ . However, since natural energy is used, output power fluctuates every moment. In addition, as a whole in Japan, long-distance power transmission is likely to occur due to long-distance transmission due to long-distance transmission when a large amount of power is passed through a grid (called a comb grid) between power companies due to geographical conditions. . For this reason, it becomes difficult to balance power demand and supply, and there is a problem that the frequency of power becomes unstable.
Therefore, as with the current control method, load fluctuations in the supply area of the own power company are basically controlled by the own power company, and fluctuations due to output power using natural energy are the frequency adjustment capability of the own power company. Only when it exceeds the limit, it is eager to maintain the frequency of the power grid by utilizing the coordination power of other power companies.

The present invention has been made in view of the above, and as its purpose, it is linked only when the fluctuation due to the output power of the generator using natural energy exceeds the frequency adjustment capability of its own area. An object of the present invention is to provide a frequency control system and a frequency control method for maintaining the frequency of an electric power system by using an adjustment power based on output power of a generator that does not use natural energy in other areas.

In order to solve the above-mentioned problems, the invention described in claim 1 includes a natural energy generator and an area power management device that manages the operating state of a non-natural energy generator disposed in the same area. A wide-area power system connected via the network to the area power management devices respectively disposed in a plurality of areas and interconnected between the plurality of areas by receiving the operating state from the area power management devices A wide area power monitoring device that monitors the operation state of the area, wherein the area power management device calculates a total value of power outputs of a plurality of the generators of the natural energy system in the area. Value calculation means, short cycle constraint range calculation means for calculating a short cycle constraint range in the own area based on adjustment power of the non-renewable energy generator, Transmission means for adding an area number related to the own area to the total value and the short cycle restriction range and transmitting the same to the wide area power monitoring apparatus, and the wide area power monitoring apparatus from the area power management apparatus of each area A receiving unit that receives the total value, the short cycle restriction range, and the area number; a short cycle variation value calculating unit that calculates a short cycle variation value from the total value for each area; and the short cycle variation value in at least one area. When the cycle variation value is in a deviating state indicating that it deviates from the short cycle constraint range, 1 or an adjustment gain value OFF signal is transmitted to the area power management apparatus in the area as a predetermined adjustment gain value relating to the frequency term. And in a normal state indicating that the short cycle fluctuation value is within the short cycle constraint range in other areas Control means for controlling to transmit a value greater than 1 or an adjustment gain value ON signal as a predetermined adjustment gain value relating to the term to the area power management device in the area, and the area power management device includes: When a predetermined adjustment gain value or adjustment gain value ON signal or adjustment gain value OFF signal related to the frequency term is received from a wide area power monitoring device, the frequency deviation (ΔF) of the power system in the area, the interconnection power flow deviation ( [Delta] PT), regional demand power calculation means for calculating the regional demand power (AR) based on the predetermined adjustment gain value or the adjustment gain value ON signal or the adjustment gain value OFF signal, and the regional demand power as the non-natural energy Distribution means for distributing to a plurality of generators of the system.

According to the present invention, a generator that does not use the natural energy of another area that is connected only when the fluctuation due to the output power of the generator that uses natural energy exceeds the frequency adjustment capability of the area. It is possible to maintain the frequency of the power system by using the adjustment power due to the output power of the power system.

It is a figure which shows the functional block structure of the electric power grid load frequency control system 1 concerning 1st Embodiment of this invention. It is a figure which shows the structure of the external interface part 11 shown in FIG. It is a figure for demonstrating the information communicated between each apparatus with which the electric power grid load frequency control system 1 shown in FIG. 1 is equipped. It is a sequence diagram for demonstrating the sequence of the information communicated between each apparatus with which the electric power system load frequency control system 1 shown in FIG. 1 is equipped. 4 is a diagram illustrating a structure of a flag table stored in a memory provided in an adjustment gain management unit 32. FIG. 4 is a flowchart for explaining the operation of the wide area power monitoring apparatus 30 shown in FIG. 1. It is a graph for demonstrating the situation when the short cycle fluctuation value is in a deviation state with respect to the short cycle restriction range of a certain area and in the normal state. It is a flowchart for demonstrating operation | movement of the area power management apparatus 10 shown in FIG. 7 is a flowchart for explaining the operation of the wide area power monitoring apparatus 30 as a modification of the first embodiment. 6 is a flowchart for explaining the operation of the area power management apparatus 10 as a modification of the first embodiment. It is a figure which shows the functional block structure of the wide area power monitoring apparatus 40 of the electric power grid load frequency control system concerning 2nd Embodiment of this invention. FIG. 12 is a flowchart for explaining an output process by an adjustment gain calculation unit 36 shown in FIG. 11 as a second embodiment. 12 is a flowchart for explaining the operation of the wide area power monitoring apparatus 40 shown in FIG. 11.

Embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram showing a functional block configuration of a power system load frequency control system 1 according to the first embodiment of the present invention. In FIG. 1, for example, a 60 Hz power system 3 from the Kyushu area in Japan and the China area to the Chubu area is shown. Areas # 1 to # 6 are areas under control of a plurality of power companies. Assume that one electric power company exists in one area. In the present embodiment, the description is simplified by treating the number of areas as six, but the present invention is not limited to such a number of areas.
The power systems 3 # 1 to 3 # 6 arranged in the areas # 1 to # 6 include a plurality of power generators G1, G2,..., Gn for supplying power. G1 to Gk are thermal power generators, Gk + 1 to Gn are hydraulic power generators, and Gm + 1 to Gn (1 <k <m <n) are wind power generators. The generators Gm + 1 to Gn may be solar power generators or tidal power generators instead of wind power generators. In addition, the power system 3 is connected to another system (an other power system 3 excluding its own area) via a connection line 4 to form a connection system.

In addition, as a form of power generation (natural energy system) that uses natural energy to convert to electric power, geothermal power generation, solar thermal power generation, ocean temperature difference power generation, wave power generation, tidal power generation, ocean temperature difference power generation, salinity difference power generation , Ocean current power generation, onshore wind power generation, offshore wind power generation, floating offshore wind power generation, vertical wind power generation, fuel cell power generation, solar power generation, space solar power generation, MHD power generation, thermoelectric power generation, vibration power generation, etc. The generators Gm + 1 to Gn may have these power generation modes.
As a power generation form (non-natural energy system) for converting into electric power without using natural energy, a power generation form capable of controlling the amount of power to be generated, such as thermal power generation, hydroelectric power generation, and nuclear power generation, is known.

The power system load frequency control system 1 according to the first embodiment outputs the outputs of the generators G1 to Gn in other areas excluding the area where the power system 3 is present according to a command value received from the area where the power system 3 is present. It is a system for maintaining the frequency (system frequency) of the entire power system 3 at a specified value by adjusting (generated power).
The power system load frequency control system 1 is connected to the area power management devices 10 # 1 to 10 # 6 provided for each area and the area power management devices 10 # 1 to 10 # 6 via a dedicated network N. And a wide area power monitoring device 30 for managing the power in areas # 1 to # 6.

Here, the configuration of the area power management apparatus 10 will be described.
First, the configuration of the external interface unit 11 will be described with reference to FIG.
The generator output input units 11e1 to 11em receive the output values (generated power values) output from the generators G1 to Gm through the signal lines 11b1 to 11bm and output them to the data bus 20.
The command value transmission units 11d1 to 11dm transmit (transmit) target command values corresponding to the outputs of the generators G1 to Gn transmitted from the control unit 19 to the corresponding generators G1 to Gm via the signal lines 11a1 to 11am. To do.
The generator output input units 11fm + 1 to 11fn input wind power output data (generated power values) output from the generators Gm + 1 to Gn using natural energy via the signal lines 11cm + 1 to 11bn and output them to the data bus 20. .

Returning to FIG. 1, the detection unit 12 is provided in the power system 3 # 1, and the frequency deviation ΔF of the power system 3 # 1 is set for each timing based on a predetermined control cycle (for example, every 10 seconds as a control cycle; A frequency deviation (ΔF) detector 12a for detecting at a control cycle timing) and a tidal current deviation (ΔPT) detector 12b for detecting a power flow deviation ΔPT of the interconnection line 4 at each control cycle timing. The detection data respectively detected by the ΔF detection unit 12a and the ΔPT detection unit 12b is input to the AR calculation unit 13 at each detection timing.

The AR calculation unit 13 includes a frequency deviation (ΔF) detected by a detection unit 12 (ΔF detection unit 12a, ΔPT detection unit 12b) provided on the connection line 4 of the power system 3, and a connection line power flow deviation (ΔPT). Based on the system constant K and the adjustment gain K _f of the frequency term received from the wide area power monitoring device 30, the calculation process of the local requirement amount (regional required power) AR is executed for each input timing, that is, for each control cycle timing. The calculation result (region required power (AR) for each control cycle timing) is stored in the memory 13a.

Furthermore, the AR calculation unit 13 calculates the regional required power (AR) for each control cycle timing calculated by the AR calculation process, for example, the regional required power at the control cycle timing in the past from the current control cycle timing stored in the memory 13a. Is filtered by a known filtering process such as an exponential smoothing process using.
The AR distribution unit 14 distributes the regional required power AR filtered for each control cycle timing by the AR calculation unit 13 to each of the generators G1 to Gn, and sets the AR allocation amount to a target command corresponding to each of the generators G1 to Gn. The data is sent to the value creation unit 15.

The target command value creation unit 15 outputs the outputs of the generators G1 to Gm based on the AR distribution amount of the generators G1 to Gm transmitted at each control cycle timing and the load distribution amount received from the operation planning unit 16. A target command value is calculated for each control cycle timing and output to the command value transmission unit 11. As the processing of the command value transmission units 11d1 to 11dm, the calculated target command values of the generators G1 to Gm are transmitted to the generators G1 to Gm at each control cycle timing, and are transmitted to the generators G1 to Gm. Outputs the target command value (numerical value). As a result, the output of each of the generators G1 to Gm is controlled so that the frequency fluctuation of the power system 1 can be suppressed within a specified value and is optimal in terms of economic load.

The operation plan unit 16 is a short-term constraint range indicating a short-term constraint range of the current adjustment power as a driving plan including today's (current) predicted total demand on the previous day based on past demand trends and the like. A long-term restriction range indicating a limited restriction range is calculated, and the operation plan data (predicted total demand data) is stored in the memory 16a.
The operation plan unit 16 corrects the predicted total demand data that is planned for operation using the predicted current total demand (current total demand data), the predicted total demand data based on the operation plan data, and the load sharing amount correction value. .
Then, the operation planning unit 16, based on the corrected predicted total demand data and various characteristics of the generators G1 to Gm (output upper and lower limit values, etc.), for example, an equal incremental fuel method using Lagrange's undetermined multiplier method, etc. The load sharing amount calculation is executed by the calculation method to calculate the economical load sharing amount of each of the generators G1 to Gm, and the calculated load sharing amount of each of the generators G1 to Gm corresponds to each of the generators G1 to Gm. This is sent to the target command value creation unit 15.

The short cycle constraint range calculation unit 17 includes non-natural energy such as the thermal power generators G1 to Gk and the hydroelectric generators Gk + 1 to Gm that are currently operating in parallel among the operation plan data (predicted total demand data) acquired from the operation plan unit 16. A short cycle restriction range, which is operation plan data corresponding to the output of the power generator of the system, is extracted and transmitted to the wide area power monitoring apparatus 30 via the communication processing unit 18 and the dedicated network N.
The short cycle constraint range calculation unit 17 calculates the short cycle constraint range based on the adjustment power of non-natural energy generators such as the thermal power generators G1 to Gk and the hydropower generators Gk + 1 to Gm currently operating in parallel. You may comprise. The short cycle constraint range calculation unit 17 may be configured to calculate a value obtained by multiplying the short cycle component of the operation plan data (predicted total demand data) acquired from the operation plan unit 16 by a certain ratio. Good.
The communication processing unit 18 is connected to the wide area power monitoring apparatus 30 via the dedicated network N, performs packet communication according to a communication protocol, and transmits and receives data.
The control unit 19 includes an HDD, a ROM, a RAM, and a CPU. The control unit 19 reads an operating system OS from the HDD, expands the operating system on the RAM, starts the OS, and manages application software (frequency control from the HDD under OS management). Program) and execute various processes.

Next, the configuration of the wide area power monitoring apparatus 30 shown in FIG. 1 will be described.
The short cycle variation calculation unit 31 performs high-pass filtering on the total power outputs D # 1 to D # 6 of the plurality of generators using natural energy, and performs short cycle variation values DS # 1 to DS #. 6 is calculated for each.
The adjustment gain management unit 32 indicates whether to set 1 or a value larger than 1 as the adjustment gain K _f of the frequency term for the plurality of area power management devices 10 # 1 to 10 # 6 Is stored and managed in a flag table (FIG. 5) on the memory 32a.
The management DB unit 33 manages the connection state and the like of the interconnection line 4 arranged between the areas as data. The management DB unit 33 manages the operating state, power generation capacity, and the like of the wind power generators arranged in each area as data.
The communication processing unit 34 is connected to the plurality of area power management apparatuses 10 # 1 to 10 # 6 via the dedicated network N, performs packet communication according to the communication protocol, and transmits / receives data.
The control unit 35 includes an HDD, a ROM, a RAM, and a CPU. The controller 35 reads an operating system OS from the HDD, expands the operating system on the RAM, starts the OS, and manages application software (frequency control from the HDD under OS management. Program) and execute various processes.

Next, with reference to FIG. 3, the information communicated between each apparatus with which the electric power system load frequency control system 1 shown in FIG. 1 is provided is demonstrated.
For example, the area power management apparatus 10 # 1 that manages the power system of the area # 1 aggregates wind power output data acquired from a plurality of wind power generators arranged in the area # 1, and the total value of these data Is transmitted to the wide area power monitoring device 30 as wind power output total data. In addition, the area power management apparatus 10 # 1 transmits the short period restriction range S # 1 indicating the short-term restriction range of the current adjustment power to the wide area power monitoring apparatus 30.
Similarly, the area power management devices 10 # 2 to 10 # 6 arranged in the areas # 2 to # 6 use the wind power total data and the short cycle constraint ranges S # 2 to S # 6 in each area as the wide area power. Transmit to the monitoring device 30.

On the other hand, the wide area power monitoring apparatus 30 stores the total wind power output data and the short cycle constraint ranges S # 1 to S # 6 received from the area power management apparatuses 10 # 1 to 10 # 6 in the management DB unit 33, and then Filtering is performed on the total wind power output data acquired from the areas # 1 to # 6, and the short cycle fluctuation value of the wind is calculated for each of the areas # 1 to # 6. For each of the areas # 1 to # 6, it is determined whether the deviation state is such that the short cycle variation value falls below the short cycle restriction range or the normal state. When the short cycle fluctuation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle restriction range in at least one area, the wide area power monitoring device 30 performs K on the area power management device in the area in the deviating state. Send _f = 1. In addition, K _f = 1.2 is transmitted to the area power management apparatus in the area in the normal state.
In this embodiment, K _f = 1.2. However, the present invention is not limited to such a value, and other values or variable values may be used.

Next, with reference to a sequence diagram shown in FIG. 4, a sequence of information communicated between the devices provided in the power system load frequency control system 1 shown in FIG. 1 will be described.
First, in the area power management apparatus 10 # 1 provided in the area # 1 shown in FIG. 1, the generator output input units 11fm + 1 to 11fn are connected to the natural energy generators Gm + 1 to Gn via signal lines 11cm + 1 to 11bn. The output wind power output data (generated power value) is input and output to the data bus 20. The control unit 19 sums up the wind power output data of the natural energy generators Gm + 1 to Gn input via the data bus 20, and calculates the wind power total data of the area.
On the other hand, the short cycle constraint range calculation unit 17 is based on the adjustment power of non-natural energy generators such as the thermal power generators G1 to Gk and the hydropower generators Gk + 1 to Gm that are currently operating in parallel. 1 is calculated.
Next, the control unit 19 adds the area number (# 1) to the total wind power output data and the short cycle constraint range S # 1 of the area, and outputs the communication processing unit 18.
Next, the communication processing unit 18 performs packet communication with the wide area power monitoring apparatus 30 connected via the dedicated network N according to the communication protocol, and the total wind power output data, the short cycle constraint range S # 1, and the area number (# 1). ).

Similarly, the area power management apparatuses 10 # 2 to 10 # 6 arranged in the areas # 2 to # 6 include total wind power output data, short cycle constraint ranges S # 2 to S # 6, and areas in the respective areas. The number is transmitted to the wide area power monitoring apparatus 30.
On the other hand, the wide area power monitoring apparatus 30 stores the total wind power output data and the short cycle restriction ranges S # 1 to S # 6 received from the area power management apparatuses 10 # 1 to 10 # 6 in the management DB unit 33, and outputs the wind power output. Filtering is performed on the total data, and the short-term fluctuation value of the wind force is calculated for each of the areas # 1 to # 6. For each of the areas # 1 to # 6, it is determined whether the deviation state is such that the short cycle variation value falls below the short cycle restriction range or the normal state.
Next, when the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle restriction range in at least one area, the wide area power monitoring device 30 performs K for the area power management device of the area in the deviating state. Send _f = 1. And _Kf = 1.2 is transmitted with respect to the area power management apparatus of the area which is in a normal state In addition, in the above-mentioned description, in an area power management apparatus, a wind power output total data, a short cycle constraint range, and an area number Is transmitted to the wide area power monitoring device 30. However, the total wind power output data and the area number, the short cycle restriction range, and the area number may be transmitted separately.

Next, with reference to the flag table shown in FIG. 5, the management state of the area power management devices 10 # 1 to 10 # 6 at a certain sampling time in the wide area power monitoring device 30 shown in FIG. 1 will be described.
The flag table shown in FIG. 5 is managed by the adjustment gain management unit 32 provided in the wide area power monitoring apparatus 30. The adjustment gain management unit 32 indicates whether to set 1 or a value larger than 1 as the adjustment gain K _f of the frequency term for the plurality of area power management devices 10 # 1 to 10 # 6 Are stored in a flag table on the memory 32a for management. A flag A shown in FIG. 5 indicates that the corresponding area is in a departure state, and a flag B indicates that the corresponding area is in a normal state.

Next, the operation of the wide area power monitoring apparatus 30 will be described with reference to the flowchart shown in FIG.
First, in step S1, the communication processing unit 34 receives the total wind power output data and the area number from the area power management apparatus 10 # 1 via the dedicated network N. Similarly, the total wind power output data and the area number are received from the area power management apparatuses 10 # 2 to 10 # 6 via the dedicated network N. Here, the control unit 35 classifies each wind power output total data received from the area power management apparatuses 10 # 1 to 10 # 6 for each area number and stores the data in the management DB unit 33.

Next, in step S5, the short cycle variation calculation unit 31 performs a filtering process on the wind power output total data to calculate a short cycle variation value of the wind force. That is, the short cycle variation calculation unit 31 performs high-pass filtering on the total power outputs D # 1 to D # 6 of the plurality of generators using natural energy, and performs short cycle variation values DS # 1 to DS # 1 to DS # 1 to D # 6. DS # 6 is calculated for each. Here, the control unit 35 classifies the short cycle variation values DS # 1 to DS # 6 for each area number and stores them in the management DB unit 33.
Here, the high-pass filter process performed in the short cycle variation calculation unit 31 will be described.
The short cycle variation calculation unit 31 outputs a component of a frequency component obtained by removing a low frequency component including a direct current component from a total value D of the power outputs of a plurality of generators using natural energy in a certain area. D.

Next, in step S10, the communication processing unit 34 receives the short cycle restriction range and the area number from the area power management apparatus 10 # 1 via the dedicated network N. Similarly, the short cycle restriction range and the area number are received from the area power management apparatuses 10 # 2 to 10 # 6 via the dedicated network N. Here, the control unit 35 classifies each short cycle restriction range received from the area power management apparatuses 10 # 1 to 10 # 6 for each area number and stores the classified range in the management DB unit 33.
Next, in step S15, the control unit 35 sets a flag B to areas # 1 to # 6 for the flag table under the control of the adjustment gain management unit 32, and stores this flag table on the memory 32a. . The flag B indicates that the adjustment gain value of the frequency term is a predetermined value larger than 1.
Next, in step S20, the control unit 35 sets 1 to the loop variable j (j is an integer).

Next, in step S25, the control unit 35 reads the short cycle variation value DS # j and the short cycle constraint range S # j related to the area #j from the management DB unit 33, and the short cycle variation value DS # j <short cycle constraint range. S # j, that is, whether or not the short period fluctuation value DS # j is a deviation state that is smaller than the short period constraint range S # j is determined.
At this time, when the short cycle variation value DS # j is smaller than the short cycle constraint range S # j, the control unit 35 has a short cycle variation value that is out of the short cycle constraint range of the area #j. It progresses to step S30. On the other hand, when the short cycle variation value DS # j is equal to or greater than the short cycle constraint range S # j, the control unit 35 determines that the short cycle variation value is in the normal state from the short cycle constraint range of the area #j. Then, the process proceeds to step S35.
Next, in step S30, the control unit 35 sets a flag A to the area #j in a deviating state with respect to the flag table managed by the adjustment gain management unit 32, and stores this flag table on the memory 32a. Let

Next, in step S35, the control unit 35 increments the loop variable j by setting j + 1 to the loop variable j.
Next, in step S40, the control unit 35 determines whether or not the value of the loop variable j has reached the maximum value 7. If the loop variable j becomes 7, the process proceeds to step S45. On the other hand, if the value of the loop variable j has not reached the maximum value 7, the control unit 35 returns to step S25 and repeats the above processing.
In step S40, when the value of the loop variable j reaches the maximum value 7, it is configured to exit the loop processing. However, the maximum value of the loop variable j is set according to the number of areas monitored by the wide area engine. It may be changed.
As a result of the processing in steps S20 to S40, a flag table is generated on the memory 32a as shown in FIG.

Next, in step S43, the control unit 35 reads the flag table managed by the adjustment gain management unit 32 from the memory 32a. Then, the control unit 35 refers to the flag table and determines whether there is at least one flag A in the flag table. With this determination process, it can be determined whether or not at least one area is in a departure state. When at least one area is in a departure state, the process proceeds to step S45. On the other hand, when all the areas are not in the deviating state, the process proceeds to step S50.
Next, when the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle restriction range in at least one area, in step S45, the control unit 35 manages the flag table managed by the adjustment gain management unit 32. Are read from the memory 32a. Then, the control unit 35 refers to the flag table, controls the communication processing unit 34 to transmit K _f = 1.0 to the area in the departure state indicated by the flag A, and is in a normal state indicated by the flag B The communication processing unit 34 is controlled so as to transmit K _f = 1.2 to an area located at.
Here, the control unit 35 sequentially outputs a set of data including the area number and the adjustment gain value K _f related to the frequency term to the communication processing unit 34. The communication processing unit 34 sequentially receives a set of data including the area number and the adjustment gain value K _f related to the frequency term from the control unit 35, and receives these data via the dedicated network N and the area power corresponding to the area number. The data is sequentially transmitted to the management devices 10 # 1 to 10 # 6.
Next, in step S50, the control unit 35 reads the current time from the built-in timer 35t, and determines whether or not a fixed period (for example, 10 minutes) has come. If it is not the time of the fixed cycle, the control unit 35 returns to step S50 and repeats this process. On the other hand, the control unit 35 returns to step S1 and repeats the above process when the time of the fixed period comes.

As a result, when at least one area is in a deviating state indicating that the short cycle variation value has deviated from the short cycle constraint range, the area power management device of the area in the deviating state has a predetermined adjustment gain value related to the frequency term. 1 and a value larger than 1 can be transmitted as a predetermined adjustment gain value related to the frequency term to the area power management apparatus in the area in the normal state.

Next, with reference to the graph shown in FIG. 7, the situation when the short cycle variation value is in the deviating state and the normal state with respect to the short cycle restriction range of a certain area will be described.
In FIG. 7, the vertical axis indicates power, and the horizontal axis indicates time. In FIG. 7, (a) shows the wind power generation output and is the total area of the output actually generated by the wind power generation, (b) shows the long-term fluctuation of the wind power generation output, and the wind power output is expressed by LPF (low pass filter). (C) shows the short-term fluctuation of the wind power output, and the wind power output passed through the HPF (high pass filter) (wind power output-long-period fluctuation is acceptable) d) shows the long-cycle constraint range, and is the range showing the difference between the total output when the power output of the company's thermal power generator or the like is lowered to the limit and the current total output, and (e) is 30% of the wind power output. This is a predicted value used for long cycle control, and (f) is a short cycle constraint range.
As shown in FIG. 7, the short period fluctuation (c) is in a deviating state indicating that the short period variation range (f) has been deviated in the time period between 3:00 and 3:30. It shows that it is in a normal state except the time zone.

In the present embodiment, when the short cycle fluctuation value is in a deviating state with respect to the short cycle constraint range related to the natural energy system (wind power generator) in a certain area, it is arranged in another area connected to the linkage line 4. In addition, by controlling the non-natural energy generator so as to increase its output, it is possible to suppress frequency fluctuations in the entire system power.
As a result, when the frequency is disturbed by the output fluctuation of the wind power generation, the control according to the present invention has an effect that the frequency recovery is faster than the case where there is no control.

Next, the operation of the area power management apparatus 10 provided in a certain area will be described with reference to the flowchart shown in FIG.
First, in step S <b> 101, the communication processing unit 18 receives the adjustment gain value K _f related to the frequency term from the wide area power monitoring device 30 provided in the wide area engine, and transfers the adjustment gain value K _f to the control unit 19.
Next, in step S105, the control unit 19 determines whether or not the adjustment gain value K _f = 1 from the wide area engine has been received. If the adjustment gain value K _f = 1 from the wide area engine is received, the process proceeds to step S110. On the other hand, if the adjustment gain value K _f = 1 from the wide area engine is not received, the process proceeds to step S115. .

When the adjustment gain value K _f = 1 from the wide-area organization is received, in step S110, the AR calculation unit 13 calculates the regional request amount AR according to Expression (2).
AR = −KK _f PΔf + ΔPT = −KPΔf + ΔPT (2)
Here, AR is the regional demand (supply / demand error), K is the system constant, P is the system capacity, Δf is the frequency deviation, and ΔPT is the interconnection power flow deviation.
Specifically, the frequency deviation (ΔF) detection unit 12a provided in the detection unit 12 illustrated in FIG. 1 sets the frequency deviation ΔF of the power system 3 # 1 for each timing based on a predetermined control cycle (for example, 10 seconds as a control cycle). Every; hereinafter referred to as control cycle timing). Moreover, the tidal current deviation (ΔPT) detection unit 12b detects the tidal current deviation ΔPT of the interconnection line 4 at each control cycle timing. The detection data detected by the ΔF detection unit 12a and the ΔPT detection unit 12b is output to the AR calculation unit 13 at each detection timing.

In step S110, the AR calculation unit 13 determines the frequency deviation (ΔF) detected by the detection unit 12 (ΔF detection unit 12a, ΔPT detection unit 12b) provided in the connection line 4 of the power system 3, and the connection line power flow. Based on the deviation (ΔPT), the system constant K, and the adjustment gain K _f (1) of the frequency term received from the wide area power monitoring device 30, the above equation (2) is followed for each input timing, that is, for each control cycle timing. The calculation process of the area required amount (area required power) AR is executed, and the calculation result (area required power (AR) for each control cycle timing) is stored in the memory 13a. Next, the process proceeds to step S120.

On the other hand, when the adjustment gain value K _f = 1 from the wide area engine is not received, that is, when the adjustment gain value K _f = 1.2 from the wide area engine is received, in step S115, the AR calculation unit 13 The regional requirement amount AR is calculated according to the equation (3).
AR = −KK _f PΔf + ΔPT (3)
Specifically, the frequency deviation (ΔF) detection unit 12a provided in the detection unit 12 illustrated in FIG. 1 sets the frequency deviation ΔF of the power system 3 # 1 for each timing based on a predetermined control cycle (for example, 10 seconds as a control cycle). Every; hereinafter referred to as control cycle timing). Moreover, the tidal current deviation (ΔPT) detection unit 12b detects the tidal current deviation ΔPT of the interconnection line 4 at each control cycle timing. The detection data detected by the ΔF detection unit 12a and the ΔPT detection unit 12b is output to the AR calculation unit 13 at each detection timing.

In step S115, the AR calculation unit 13 determines the frequency deviation (ΔF) detected by the detection unit 12 (ΔF detection unit 12a, ΔPT detection unit 12b) provided in the connection line 4 of the power system 3, and the connection line power flow. Based on the deviation (ΔPT), the system constant K, and the adjustment gain K _f (1.2) of the frequency term received from the wide area power monitoring device 30, the above equation (2) is obtained for each input timing, that is, for each control cycle timing. The calculation process of the required area demand (area required power) AR is executed, and the calculation result (area required power (AR) for each control cycle timing) is stored in the memory 13a.
At this time, since the adjustment gain value K _f is slightly from 1 to 1.2, also slightly increased area required power AR accordingly. Next, the process proceeds to step S120.

In step S120, the regional required power AR including the slight increment is distributed and distributed to each generator.
That is, the AR calculation unit 13 calculates the regional required power (AR) for each control cycle timing calculated by the AR calculation process, for example, the regional required power at a control cycle timing in the past from the current control cycle timing stored in the memory 13a. Is filtered by a known filtering process such as an exponential smoothing process using.
The AR distribution unit 14 distributes the regional required power AR filtered for each control cycle timing by the AR calculation unit 13 to each of the generators G1 to Gn, and sets the AR allocation amount to a target command corresponding to each of the generators G1 to Gn. The data is sent to the value creation unit 15.

The target command value creation unit 15 outputs the outputs of the generators G1 to Gm based on the AR distribution amount of the generators G1 to Gm transmitted at each control cycle timing and the load distribution amount received from the operation planning unit 16. A target command value is calculated for each control cycle timing and output to the command value transmission unit 11. As the processing of the command value transmission units 11d1 to 11dm, the calculated target command values of the generators G1 to Gm are transmitted to the generators G1 to Gm at each control cycle timing, and are transmitted to the generators G1 to Gm. Outputs the target command value (numerical value). As a result, the output of each of the generators G1 to Gm increases slightly, and the frequency fluctuations of the entire power system including other areas can be suppressed via the interconnection line 4 and controlled so as to be optimal in terms of economic load. .

Next, in step S125, the control unit 19 reads the current time from the built-in timer 19t, and determines whether or not a fixed period (for example, 10 minutes) has come. When it is not the time of the fixed cycle, the control unit 35 returns to step S125 and repeats this process. On the other hand, the control unit 19 returns to step S101 when the time of the fixed period comes, and repeats the above processing.
As a result, only when the fluctuation due to the output power of the generator using natural energy exceeds the frequency adjustment capability of its own area, the output power of the generator not using the natural energy of other areas connected to it. It is possible to maintain the frequency of the power system by using the adjustment force by.

In the present invention, only when the output power fluctuation of the generator using natural energy such as wind power exceeds the frequency adjustment capability of the non-natural energy system of the own area, other areas linked by the command of the wide-area engine The frequency can be maintained by using the adjustment power of non-natural energy generators.
Thereby, the level of immediacy and reliability can be set lower than in the conventional AR allocation method. In addition, according to the present invention, since the follow-up control is performed, even when the prediction regarding wind power generation is lost, there is an advantage that the frequency is not disturbed because the output power is not reduced.

<Modification>
Next, a modification of the first embodiment will be described with reference to the flowchart shown in FIG. FIG. 9 is a flowchart for explaining the operation of the wide area power monitoring apparatus 30, and is characterized in that step S245 shown in FIG. 9 is included in the flowchart shown in FIG.
That is, in step S245, the control unit 35 reads the flag table managed by the adjustment gain management unit 32 from the memory 32a. Then, the control unit 35 refers to the flag table and controls the communication processing unit 34 so as to transmit the adjustment gain value OFF signal to the area in the departure state indicated by the flag A. On the other hand, the control unit 35 enters the normal state indicated by the flag B. The communication processing unit 34 is controlled to transmit the adjustment gain value ON signal to a certain area.
Here, the control unit 35 sequentially outputs a set of data including the area number and the adjustment gain value ON signal or the adjustment gain value OFF signal related to the frequency term to the communication processing unit 34. The communication processing unit 34 sequentially receives a set of data including an adjustment gain value ON signal or an adjustment gain value OFF signal related to the area number and the frequency term from the control unit 35, and receives these data via the dedicated network N in the area. The information is sequentially transmitted to the area power management apparatuses 10 # 1 to 10 # 6 corresponding to the numbers.

Next, a modification of the first embodiment will be described with reference to the flowchart shown in FIG. FIG. 10 is a flowchart for explaining the operation of the area power management apparatus 10 provided in a certain area, and is characterized in that step S255 shown in FIG. 10 is included in the flowchart shown in FIG.
In step S255, the control unit 19 determines whether or not an adjustment gain value OFF signal has been received from the wide area engine. If the adjustment gain value OFF signal from the wide area engine is received, the process proceeds to step S110. On the other hand, if the adjustment gain value OFF signal from the wide area engine is not received (the adjustment gain value ON signal is received). Advances to step S115.
When the adjustment gain value OFF signal from the wide-area organization is received, in step S110, the AR calculation unit 13 sets K _f = 1 and calculates the regional requirement amount AR according to the above equation (2).
On the other hand, when the adjustment gain value OFF signal from the wide-area engine has not been received (the adjustment gain value ON signal is received), in step S115, the AR calculation unit 13 sets, for example, K _f = 1. 2 is read, and the regional requirement amount AR is calculated according to the above equation (3).
As a result, only when the fluctuation due to the output power of the generator using natural energy exceeds the frequency adjustment capability of its own area, the output power of the generator not using the natural energy of other areas connected to it. It is possible to maintain the frequency of the power system by using the adjustment force by.

As described above, the natural power generators arranged in the same area and the area power management device that manages the operating state of the non-renewable energy generators, and the above-mentioned each arranged in a plurality of areas A wide-area power monitoring apparatus that is connected to the area power management apparatus via a network and that monitors the operation state of a wide-area power system that is interconnected between a plurality of areas by receiving the operation state from the area power management apparatus. The area power management device calculates a total value of the power outputs of a plurality of renewable energy generators in its own area, and determines its own area based on the adjustment power of the non-renewable energy generator. The short cycle constraint range is calculated, and an area number related to the own area is added to the total value and the short cycle constraint range and transmitted to the wide area power monitoring apparatus. The wide area power monitoring device receives the total value, the short cycle restriction range, and the area number from the area power management device of each area, calculates the short cycle variation value from the total value for each area, and the short cycle variation in at least one area When the value is in a deviating state indicating that the value deviates from the short-term constraint range, control is performed so as to transmit a 1 or an adjusted gain value OFF signal as a predetermined adjusted gain value related to the frequency term to the area power management apparatus in the area. In addition, when the short period fluctuation value is in a normal state indicating that the short period fluctuation value is within the short period constraint range in another area, a value greater than 1 or an adjustment gain value ON signal as a predetermined adjustment gain value related to the frequency term Is transmitted to the area power management apparatus in the area. When the area power management device receives a predetermined adjustment gain value or adjustment gain value ON signal or adjustment gain value OFF signal related to the frequency term from the wide area power monitoring device, the frequency deviation (ΔF) of the power system of the area, Based on the system power flow deviation (ΔPT), the predetermined adjustment gain value or the adjustment gain value ON signal or the adjustment gain value OFF signal, the area request power (AR) is calculated, and the area request power is calculated as a plurality of non-natural energy systems. Distribute to the generator.
As a result, the output power of the generator that does not use the natural energy of other areas that are connected to the area only when the fluctuation due to the output power of the generator that uses natural energy exceeds the frequency adjustment capability of its own area. It is possible to maintain the frequency of the power system by using the adjustment force by.

Second Embodiment
In the first embodiment described above, the load fluctuation in the supply area of the own power company is basically controlled by the own power company. Only when the power fluctuation by the generator of natural energy such as wind power exceeds the frequency adjustment capability of the own power company, the adjustment power of the other power company linked with the command from the wide-area organization is utilized, and the frequency It is characterized by maintaining.
For more information, in the first embodiment, in Formula (3) described above, as the adjustment gain value K _f about frequency terms, for example, 1.2 in some cases 1.0, the normal state when in departure state By using, there was an effect that the frequency was stabilized.
However, when operating actually, if appropriately setting the value of the adjustment gain values K _f about frequency terms, since there are various variation factors, or when the effect of stabilizing the frequency is low, unstable by oversteering In some cases,
Therefore, it is anxious to determine an appropriate value with high accuracy by simulation or the like based on system data or actual measurement data.

First, theoretically described method of obtaining the adjustment gain value K _f about frequency term.
If the formula for calculating the regional requirement AR is described again,
AR _i = −KP _i Δf + ΔPT _i (4)
AR _i (MW) is the regional requirement (supply error) of i company, P _i (MVA) is the system capacity of i company, Δf (Hz) is the frequency deviation, and ΔP _Ti (MW) is the interconnection of i company It is a line tidal current deviation.
Here, KΔf is a value obtained by multiplying the system constant K by a frequency deviation Δf, and is a ratio of supply and demand errors (adjustment required) of the entire system accompanying the frequency deviation Δf. Therefore, KP _i Δf (MW) in the formula of the regional requirement amount AR is the company's capacity ratio, which means that the adjustment is shared.

In other words, the amount of adjustment for the entire system is ensured by the participation of all companies connected to the system. That is, when the entire system capacity and P _G,

It becomes. Note that KP _i Δf (i = 1... N) indicates the adjustment amount of each company.
Here, assuming that company k (i = k) does not participate in the adjustment at all, equation (5) can be rewritten as follows.

If it is assumed that the adjustment force is secured only by other companies using the adjustment gain value K _f related to the frequency term at this time,

Here, for example, _{K f} is nine / 8 = 1.125 if 1/9 output capacitance of k's generator which is arranged in the area k is the entire system.
However, in the WFC, the company k that does not participate in the adjustment also participates in the adjustment within the range allowed by the adjustment power (the output change width of the generator).
Here, assuming that the adjustment force of company k is ΔP _max , company k should have participated in the adjustment until Δf _max = ΔP _max / K.

However, Δf> Δf _max

∴ P _G Δf = K _f P _G Δf−K _f P _k Δf + P _k Δf _max (11)
It becomes.
Since Δf is included in equation (5), a constant K _f value cannot be obtained, but if the magnitude of Δf is assumed to some extent, the K _f value can be obtained.
For example, if the capacity of company k is 1/9 of the entire system, Δf = 0.2, Δf _max = 0.1, K _f is (17/18) / (8/9), that is, K _f = 1.063.

With reference to FIG. 11, the functional block configuration of the wide area power monitoring device 40 of the power system load frequency control system according to the second embodiment of the present invention will be described.
The wide area power monitoring device 40 is newly provided with an adjustment gain calculation unit 36, a keyboard 37, a display control unit 38, and a monitor 39 with respect to the wide area power monitoring device 30 used in the first embodiment.
The adjustment gain calculation unit 36 inputs the system constant K, the total system capacity P _G , the system capacity P _i of each company, and the adjustment power P _max (i = 1... N) of each power company, Based on the adjustment force ΔP _maxk , the k company's adjustment force Δf _max is calculated, the frequency deviation Δf in each area is obtained from the area power management device provided in each area via the dedicated network N, and according to a predetermined formula An adjustment gain value K _f related to the frequency term is calculated. The keyboard 37 is used for inputting the system constant K, the total system capacity P _G , the system capacity P _i of each company, and the adjustment power P _max (i = 1... N) of each power company. The display control unit 38 displays various data input from the keyboard 37 on the monitor 39 and displays the adjustment gain value calculated by the adjustment gain calculation unit 36.

As the second embodiment, the output processing by the adjustment gain calculation unit 36 shown in FIG. 1 will be described with reference to the flowchart shown in FIG.
First, in step S201, the adjustment gain calculation unit 36 inputs a set constant from the keyboard 37 and stores it in the memory 32a. That is, the adjustment gain calculation unit 36 sets the system constant K, the total system capacity P _G , the system capacity P _i (i = 1... N), and the adjustment power P _max (i = 1. n) is input from the keyboard 37.
Next, in step S205, the adjustment gain calculation unit 36 assumes that k company has insufficient adjustment power as an assumption of insufficient adjustment power.
Next, in step S210, the adjustment gain calculation unit 36 calculates the system constant K, the adjustment force ΔP _{maxk of} the k company, and the adjustment force Δf _max of the k company.
Δf _max = ΔP _maxk / K (13)

Next, in step S215, the adjustment gain calculation unit 36 estimates or measures the frequency deviation Δf.
That is, the adjustment gain calculation unit 36 communicates with the communication processing unit 18 of the area power management apparatus provided in each area from the communication processing unit 34 via the dedicated network N, and acquires the frequency deviation Δf in each area.
Then, in step S220, the adjustment gain computing unit 36 calculates an adjustment gain value _{K f} about frequency term in accordance with equation (14).

Then, in step S225, the adjustment gain computing section 36 stores the adjusted gain value _{K f} about calculated frequency term to the memory 32a is managed by adjusting the gain control section 32 as _{K fm.}
Next, the adjustment gain value calculated by the adjustment gain calculation unit 36 is displayed on the monitor 39.

Next, the operation of the wide area power monitoring apparatus 40 will be described with reference to the flowchart shown in FIG.
Note that the flowchart shown in FIG. 13 is partially the same as the flowchart shown in FIG. 6 referred to in the first embodiment, so only the characteristic steps will be described.
In step S340, reads the _{K fm} from memory.
Next, in step S345, the control unit 35 reads the flag table managed by the adjustment gain management unit 32 from the memory 32a. Then, the control unit 35 refers to the flag table and controls the communication processing unit 34 to transmit K _f = 1.0 to the area in the departure state indicated by the flag A. On the other hand, the normal state indicated by the flag B The communication processing unit 34 is controlled so as to transmit K _fm to an area in the area.

Here, the control unit 35 sequentially outputs a set of data including the area number and the adjustment gain value K _f related to the frequency term to the communication processing unit 34. The communication processing unit 34 sequentially receives a set of data including the area number and the adjustment gain value K _f related to the frequency term from the control unit 35, and receives these data via the dedicated network N and the area power corresponding to the area number. The data is sequentially transmitted to the management devices 10 # 1 to 10 # 6.
As a result, by appropriately setting the adjustment gain value related to the frequency term, even if the fluctuation due to the output power of the generator using natural energy exceeds the frequency adjustment capability of its own area, It is possible to adjust and maintain the frequency of the entire power system with high accuracy by using the adjustment power by the output power of the generator that does not use the natural energy of the area.

As described above, the wide area power monitoring apparatus inputs the system constant K, the total system capacity P _G , the system capacity P _i of each company, and the adjustment power P _max (i = 1... N) of each power company, and the system constant K , Based on the adjustment force ΔP _maxk of the k company, the adjustment force Δf _max of the k company is calculated, and the frequency deviation Δf in each area is obtained from the area power management device provided in each area via the dedicated network N, Calculate the adjustment gain value K _f related to the frequency term according to the following equation:

By performing control using the calculated adjustment gain value related to the frequency term, the adjustment gain value related to the frequency term can be appropriately set.

DESCRIPTION OF SYMBOLS 1 ... Electric power system load frequency control system, 3 ... Electric power system, 10 ... Area power management apparatus, 11 ... External interface part, 11 ... Command value transmission part, 11d ... Command value transmission part, 11e ... Generator output input part, 11f ... Generator output input unit, 12 ... detection unit, 13 ... AR calculation unit, 13a ... memory, 14 ... AR distribution unit, 15 ... target command value creation unit, 16 ... operation planning unit, 16a ... memory, 17 ... short cycle Restriction range calculation unit, 18 ... communication processing unit, 19 ... control unit, 19t ... timer, 30 ... wide area power monitoring device, 31 ... short cycle fluctuation calculation unit, 32 ... adjustment gain management unit, 32a ... memory, 33 ... management DB , 33 ... management DB section, 34 ... communication processing section, 35 ... control section, 35t ... timer, 36 ... adjustment gain management section, 37 ... keyboard, 38 ... display control section, 39 ... monitor, 40 ... wide area power monitoring device

Claims (9)

1. An area power management device that manages the operating state of a natural energy generator and a non-natural energy generator that are arranged in the same area, and the area power management device that is arranged in each of a plurality of areas A wide area power monitoring device that is connected via a network and that monitors the operating state of a wide area power system interconnected between the plurality of areas by receiving the operating state from the area power management device. Because
   The area power management device
   A total value calculating means for calculating the total value of the power output of the plurality of renewable energy generators in the area;
   A short cycle constraint range calculating means for calculating a short cycle constraint range in the area based on the adjusting power of the non-natural energy generator;
   Transmitting means for adding an area number related to its own area to the total value and the short cycle constraint range and transmitting to the wide area power monitoring device,
   The wide area power monitoring device is:
   Receiving means for receiving the total value, the short cycle constraint range, and the area number from the area power management device of each area;
   Short cycle variation value calculating means for calculating a short cycle variation value from the total value for each area;
   When the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle constraint range in at least one area, 1 or an adjustment gain value OFF signal is set as the predetermined adjustment gain value for the frequency term in the area. A predetermined adjustment gain value related to the frequency term when it is controlled to transmit to the area power management device and in a normal state indicating that the short cycle variation value is within the short cycle constraint range in another area Control means for controlling to transmit a value greater than 1 or an adjustment gain value ON signal to the area power management device in the area,
   The area power management device
   When a predetermined adjustment gain value or adjustment gain value ON signal or adjustment gain value OFF signal related to the frequency term is received from the wide area power monitoring device, the frequency deviation (ΔF) of the power system in the area, the interconnection power flow deviation (ΔPT), a region required power calculation means for calculating a region required power (AR) based on the predetermined adjustment gain value or the adjustment gain value ON signal or the adjustment gain value OFF signal;
   A frequency control system comprising: distribution means for distributing the regional required power to the plurality of non-natural energy generators.
2. The area required power calculation means provided in the area power management device is:
   Adjustment gain value storage means for storing the adjustment gain value;
   When the adjustment gain value ON signal is received from the wide area power monitoring apparatus, a value larger than 1 is read and set as a preset adjustment gain value from the adjustment gain value storage means, 2. The frequency control system according to claim 1, wherein, when the adjustment gain value OFF signal is received, the regional required power (AR) is calculated by setting 1 as the adjustment gain value.
3. An area power management device that manages the operating state of a natural energy generator and a non-natural energy generator that are arranged in the same area, and the area power management device that is arranged in each of a plurality of areas A wide area power monitoring device that is connected via a network and that monitors the operating state of a wide area power system interconnected between the plurality of areas by receiving the operating state from the area power management device. Because
   The wide area power monitoring device is:
   The short in the area calculated from the area power management device in each area based on the total value of the power output of the plurality of generators in the natural energy system in the area and the adjustment power of the non-natural energy generator. Receiving means for receiving the period restriction range and area number;
   Short cycle variation value calculating means for calculating a short cycle variation value from the total value for each area;
   When the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle constraint range in at least one area, 1 or an adjustment gain value OFF signal is set as the predetermined adjustment gain value for the frequency term in the area. A predetermined adjustment gain value related to the frequency term when it is controlled to transmit to the area power management device and in a normal state indicating that the short cycle variation value is within the short cycle constraint range in another area And a control means for controlling to transmit a value greater than 1 or an adjustment gain value ON signal to the area power management device in the area.
4. The area power management device
   When a predetermined adjustment gain value or adjustment gain value ON signal or adjustment gain value OFF signal related to the frequency term is received from the wide area power monitoring device, the frequency deviation (ΔF) of the power system in the area, the interconnection power flow deviation (ΔPT), a region required power calculation means for calculating a region required power (AR) based on the predetermined adjustment gain value or the adjustment gain value ON signal or the adjustment gain value OFF signal;
   The frequency control system according to claim 3, further comprising distribution means for distributing the regional required power to the plurality of non-natural energy generators.
5. The area required power calculation means provided in the area power management device is:
   Adjustment gain value storage means for storing the adjustment gain value;
   When the adjustment gain value ON signal is received from the wide area power monitoring apparatus, a value larger than 1 is read and set as a preset adjustment gain value from the adjustment gain value storage means, 5. The frequency control system according to claim 4, wherein when the adjustment gain value OFF signal is received, the regional required power (AR) is calculated by setting 1 as the adjustment gain value.
6. The wide area power monitoring device is:
   Input means for inputting the system constant K, the total system capacity P _G , the system capacity P _i of each company, and the adjustment power P _max (i = 1... N) of each power company;
   A calculation means for calculating the adjustment force Δf _max of the k company based on the system constant K, the adjustment force ΔP _maxk of the k company;
   Obtaining means for obtaining a frequency deviation Δf in each area from the area power management device provided in each area via a network;
   An adjustment gain calculating means for calculating an adjustment gain value K _f related to the frequency term according to the following equation;
   

   

   4. The frequency control system according to claim 1, wherein the control unit performs control using an adjustment gain value related to a frequency term calculated by the adjustment gain calculation unit.
7. An area power management device that manages the operating state of a natural energy generator and a non-natural energy generator that are arranged in the same area, and the area power management device that is arranged in each of a plurality of areas A wide area power monitoring device that is connected via a network and that monitors the operating state of a wide area power system interconnected between the plurality of areas by receiving the operating state from the area power management device. The frequency control method of
   The area power management device
   A total value calculating step for calculating a total value of power outputs of the plurality of renewable energy generators in the area;
   Based on the adjustment power of the non-natural energy generator, a short cycle constraint range calculating step for calculating a short cycle constraint range in the own area;
   A transmission step of adding an area number related to its own area to the total value and the short cycle constraint range and transmitting the same to the wide area power monitoring device, and
   The wide area power monitoring device is:
   A receiving step of receiving the total value, the short cycle constraint range, and the area number from the area power management device of each area;
   A short cycle variation value calculating step for calculating a short cycle variation value from the total value for each area;
   When the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle constraint range in at least one area, 1 or an adjustment gain value OFF signal is set as the predetermined adjustment gain value for the frequency term in the area. A predetermined adjustment gain value related to the frequency term when it is controlled to transmit to the area power management device and in a normal state indicating that the short cycle variation value is within the short cycle constraint range in another area And a control step for controlling to transmit a value greater than 1 or an adjustment gain value ON signal to the area power management device in the area,
   The area power management device
   When a predetermined adjustment gain value or adjustment gain value ON signal or adjustment gain value OFF signal related to the frequency term is received from the wide area power monitoring device, the frequency deviation (ΔF) of the power system in the area, the interconnection power flow deviation (ΔPT), a regional required power calculation step of calculating a regional required power (AR) based on the predetermined adjustment gain value or the adjustment gain value ON signal or the adjustment gain value OFF signal;
   A distribution step of distributing the regional required power to the plurality of non-natural energy generators.
8. An area power management device that manages the operating state of a plurality of non-natural energy generators and a natural energy generator arranged in the same area, and the area power management that is arranged in each of a plurality of areas A wide-area power monitoring device that is connected to a device via a network and that monitors the operating state of a wide-area power system interconnected between the plurality of areas by receiving the operating state from the area power management device. System frequency control method,
   The wide area power monitoring device is:
   The short in the area calculated from the area power management device in each area based on the total value of the power output of the plurality of generators in the natural energy system in the area and the adjustment power of the non-natural energy generator. A reception step for receiving a period restriction range and an area number;
   A short cycle variation value calculating step for calculating a short cycle variation value from the total value for each area;
   When the short cycle variation value is in a deviating state indicating that the short cycle variation value has deviated from the short cycle constraint range in at least one area, 1 or an adjustment gain value OFF signal is set as the predetermined adjustment gain value for the frequency term in the area. A predetermined adjustment gain value related to the frequency term when it is controlled to transmit to the area power management device and in a normal state indicating that the short cycle variation value is within the short cycle constraint range in another area And a control step for controlling to transmit a value greater than 1 or an adjustment gain value ON signal to the area power management device in the area.
9. The wide area power monitoring device is:
   An input step for inputting the system constant K, the total system capacity P _G , the system capacity P _i of each company, and the adjustment power P _max (i = 1... N) of each power company;
   A calculation step of calculating the adjustment force Δf _max of the k company based on the system constant K, the adjustment force ΔP _maxk of the k company;
   An acquisition step of acquiring a frequency deviation Δf in each area from the area power management device provided in each area via a network;
   An adjustment gain calculating step for calculating an adjustment gain value K _f related to the frequency term according to the following equation;
   

   

   9. The frequency control method according to claim 7, wherein the control step performs control using an adjustment gain value related to the frequency term calculated by the adjustment gain calculation step.

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