JP7221131B2 - Renewable energy generator command controller and renewable energy generator system with storage battery - Google Patents

Description

TECHNICAL FIELD The present invention relates to a renewable energy generator command controller and a storage battery combined renewable energy generator system related to a storage battery combined system for supply and demand adjustment capability.

In order to reduce _CO2 emissions, it is necessary to increase the ratio of renewable energies such as solar power generation and wind power generation as energy sources for electric power, instead of fossil fuels. When the thermal power generator is disconnected from the grid, the ability to supply adjustment power for stabilizing the grid in response to fluctuations in demand decreases. On the other hand, each renewable energy power generator may have a storage battery installed side by side to reduce fluctuations in its own power generation value. Because the battery capacity is designed for the most volatile situations in wind power values, the capacity of the battery remains unused during periods of stable power generation depending on the season and weather. Storage batteries are more responsive than thermal power generators, and if the capacity of these batteries can be used as regulating power, it can contribute to system stability.

As a prior art for contributing to system stability, for example, Patent Document 1 discloses a method for appropriately maintaining the SOC (State of Charge) of a storage battery when performing supply and demand balance control using a storage battery. ing.

Further, Patent Literature 2 discloses a technique of allocating an output change request amount to each renewable energy generator so that the total output of each renewable energy generator becomes a power generation command value.

WO2014/076918 JP 2014-90665 A

Wind farm-owned variability mitigation storage batteries not only meet renewable energy variability mitigation requirements, but can also be effectively utilized by providing storage capacity for ancillary services. None of the prior art documents disclose the details of the charge/discharge control of the storage battery for achieving both mitigation of fluctuations in wind power generation and provision of control power, and further improving profits. Therefore, there is a possibility that the charging rate of the storage battery will be insufficient due to the provision of the control power, and it will be impossible to provide the control power and reduce fluctuations.

The present invention has been made to solve the above-described problems, and provides storage battery capacity for more supply and demand adjustment while satisfying fluctuation mitigation requirements for renewable energy by using a fluctuation mitigation storage battery. It is an object of the present invention to provide a renewable energy power generator command controller and a storage battery combined renewable energy power generator system.

In order to achieve the above object, the renewable energy generator command controller of the present invention receives an adjustment command value command, calculates the adjustment command value of the storage battery installed at two or more sites separately, and sums them up . A renewable energy generator command controller that commands the site to achieve the commanded adjustment command value, the renewable energy power generation value of the site and the charge/discharge value of a storage battery for mitigating fluctuations in renewable energy power generation. and the charging rate of the storage battery to calculate the adjustable power supply amount calculation unit for each site; a controllable power available amount priority calculating unit for calculating a priority of the controllable power available amount for each site from at least one numerical value of the value and the charging rate of the storage battery; a control force distribution calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the result, and the control force available amount priority calculation unit calculates the priority from the numerical value; , receiving the target charging rate of the storage battery of an arbitrary site, and if the charging rate of the storage battery of the arbitrary site is lower than the target charging rate, the site is given a higher priority in providing the downward transaction adjustment capacity, and the target charging If it is larger than the rate, the site is given a higher priority in providing the ability to adjust upward trading . Other aspects of the present invention are described in embodiments below.

According to the present invention, fluctuation mitigation storage batteries can be used to provide more storage battery capacity for balancing power while satisfying fluctuation mitigation requirements for renewable energy.

It is a figure which shows the example of a renewable energy generator command controller and the whole structure of each wind power generation site which concern on 1st Embodiment. It is a figure which shows the example of a structure of the renewable energy generator command controller which concerns on 1st Embodiment. It is a figure showing an example of composition of a wind power generation site concerning a 1st embodiment. FIG. 4 is a diagram showing an example flow of operation of a renewable energy generator command controller and each WF site; It is a figure explaining fluctuation mitigation control and a control power provision amount calculation method. It is a figure which shows the calculation flow example of the amount of adjustment power provision of a raise trade, and a priority. It is a figure which shows the calculation flow example of the adjustment power provision amount of a downward transaction, and a priority. It is a figure which shows the example of the calculation result of the adjustment power provision amount of an up transaction, and a priority. It is a figure which shows the example of the adjustment power provision amount of a downward transaction, and the calculation result of a priority. FIG. 10 is a diagram showing an example of a calculation flow for allocating command values to wind power generation sites; It is a figure explaining the influence on variation mitigation by control power provision. FIG. 5 is a diagram showing an example of the configuration of a wind power generation site according to a second embodiment; FIG. 3 is a diagram showing control characteristics of output power of a wind power generation site;

Embodiments for carrying out the present invention will be described in detail with reference to the drawings as appropriate.
<<First Embodiment>>
FIG. 1 is a diagram showing an example of the overall configuration of a renewable energy generator command controller and each wind power generation site according to the first embodiment. FIG. 1 shows an example of a renewable energy generator command controller 1 and two or more wind farm sites (hereafter referred to as WF sites) grouped together to provide balancing capacity. Here, as an example of renewable energy, wind power generation is used for explanation, but solar power generation or the like may also be used. In addition, the balancing capacity for system stability shall be provided through power trading for supply and demand balancing capacity.

The storage battery-equipped renewable energy generator system 10 is divided into WF sites 100, 200, and 300 that have a storage battery-equipped renewable energy generator, and WF sites 100, 200, and 300 that receive an adjustment command value. and a renewable energy generator command controller 1 for commanding a corresponding site to calculate an adjustment command value for a storage battery and add the sum to the commanded adjustment command value. The storage battery-equipped renewable energy generator system 10 uses a storage battery attached to the renewable energy generator to mitigate fluctuations in the power generation value of the renewable energy generator while supplying adjustment power for system stabilization. .

The renewable energy generator command controller 1 receives from the WF sites 100, 200, and 300 the charge/discharge values of the storage batteries necessary for mitigating wind power fluctuations at the WF sites 100, 200, and 300 (the storage battery capacity for mitigating renewable energy power generation fluctuations). charge/discharge value), wind turbine output upper limit command value, output when wind turbine output is not suppressed (pre-control WF output) (renewable energy power generation value), and charge/discharge status of storage battery SOC (for example, storage battery charge rate), etc., input the adjustment command value 6 from the system operator, and determine the adjustment command value 6 distributed to the WF sites 100, 200, and 300, the accompanying storage battery charge/discharge value, and the wind turbine output upper limit command value. , to the WF sites 100 , 200 , 300 .

The WF site 100 calculates the storage battery charging/discharging value and the wind turbine output upper limit command value necessary for mitigating wind power fluctuations from the wind conditions, and outputs them to the renewable energy generator command controller 1 together with the charging/discharging condition of the SOC of the storage battery.

In addition, the WF site 100 inputs the adjustment command value 6 distributed from the renewable energy generator command controller 1 to the WF site 100, the accompanying storage battery charge/discharge value, and the wind turbine output upper limit command value. The wind turbine output upper limit control is performed, and the distributed adjustment command value is sent to the power line 125 and the other output values are sent to the power line 124 . The power value of the current of each power line is measured by power meters M101 to M103. Details of the WF 100 will be described later with reference to FIG.

The power measured by the power meter M101 is sold as control power, and the power measured by the power meter M102 is sold as wind power generation. In this case, the power sold for control power and the power sold for wind power generation flow to the same power system, and the total power value is measured by the power meter M103. From the viewpoint of the stability of the power system, it is preferable that fluctuations in the power measured by the power meter M103 fall within a certain range.

In this embodiment, the output power PS of the WF site 100 fluctuates as the wind speed fluctuates. In order to mitigate the output fluctuations of the output power PS, the output fluctuations are always set to a constant value (for example, the wind power generation system 115 shown in FIG. 3) for n minutes (for example, within 20 minutes) starting at an arbitrary time. It is effective to keep it within the rating a% or less (for example, 10% or less). If it is about 10% or less of the rating of the wind power generation system 115, even if many wind power generation groups are interconnected, it is possible to reduce the influence on the electric power system. Specifically, it will be described with reference to FIG.

FIG. 13 is a diagram showing control characteristics of output power of a wind power generation site. The WF controller 107 (see FIG. 3), as described above, sets the requirement for alleviating this output fluctuation so that the maximum and minimum values for 20 minutes are 10% or less of the rated capacity of the WF site 100 . In this requirement, the upper limit of fluctuation mitigation at a certain time t is the sum of the minimum value for the previous 19 minutes and 10% of the rated capacity. As the lower limit value for fluctuation mitigation, a value obtained by subtracting 10% of the rated capacity from the maximum value for the previous 19 minutes is adopted.

Returning to FIG. 1 , the WF sites 200 and 300 also have the same configuration as the WF site 100 . The WF site 200 sells the power measured by the power meter M201 as control power, and sells the power measured by the power meter M202 as wind power generation. In this case, the power sold for control power and the power sold for wind power generation flow to the same power system, and the total power value is measured by the power meter M203. From the viewpoint of the stability of the power system, it is preferable that fluctuations in the power measured by the power meter M203 fall within a certain range.

The WF site 300 sells the power measured by the power meter M301 as control power, and sells the power measured by the power meter M302 as wind power generation. In this case, the power sold for control power and the power sold for wind power generation flow to the same power system, and the total power value is measured by the power meter M303. From the viewpoint of the stability of the power system, it is preferable that fluctuations in the power measured by the power meter M303 fall within a certain range.

FIG. 2 is a diagram showing an example of the configuration of a renewable energy generator command controller according to the first embodiment. The renewable energy power generator command controller 1 includes a controllable power available amount calculator 2 , a controllable power available amount priority calculator 3 , each WF controllable power distribution calculator 4 , and a communication transmitter/receiver 5 .

The controllable power available amount calculation unit 2 receives from the WF sites 100, 200, and 300 via the communication line 126 and the communication transmission/reception unit 5 the wind conditions, the storage battery charge/discharge values necessary for mitigating wind fluctuations, and the upper limit of the output of the wind turbine. It receives the command value and the SOC of the storage battery, calculates the available control power amount of each WF site, and sends it to the control power available amount priority calculation unit 3 .

The controllable power available amount priority calculation unit 3 receives the controllable power available amount of each WF site, the wind power situation, the storage battery charge/discharge value necessary for wind power fluctuation mitigation, the wind turbine output upper limit command value, and the SOC of the storage battery. In order to determine the order of priority for providing coordination power among the WF sites, the WF sites are ranked according to the priority of each WF site and transferred to each WF coordination power distribution calculation unit 4 .

Here, an increase transaction is, for example, a transaction that provides adjustment power to raise the frequency of the grid by discharging from a storage battery when the frequency of the grid side is lowered and power supply is required. For example, when the frequency on the grid side increases and power demand is demanded, it is a transaction that provides the adjustment power to lower the frequency on the grid side by storing electricity in a storage battery.

Each WF control power allocation calculation unit 4 receives an adjustment command value from the system operator via the communication line 126 and the communication transmission/reception unit 5, and the control power of each WF site The available amount and its priority rank are received, and adjustment command values are assigned to the WF sites 100, 200, 300 based on the adjustability available amount and its priority rank. The assignment results are sent to the WF sites 100, 200, and 300 via the communication line 126 and the communication transmitter/receiver 5. FIG.

FIG. 3 is a diagram showing an example of the configuration of a wind power generation site according to the first embodiment. FIG. 3 shows a detailed configuration of the WF site 100. As shown in FIG. The WF site 100 basically includes a wind power generation system 115 , a storage battery system 116 and a WF controller 107 .

The WF controller 107 includes a wind turbine output and charge/discharge value determination unit 111 , a converter control unit 112 , an SOC adjustment charge/discharge value determination unit 113 , a result recording unit 114 , and a communication transmission/reception unit 110 .

The wind turbine output and charge/discharge value determination unit 111 measures the wind conditions with an anemometer (not shown), and determines the storage battery charge/discharge values necessary for mitigating wind fluctuations and the upper limit command for wind turbine output based on the wind conditions and the meter value of the power meter M103. The value is calculated and sent to the renewable energy generator command controller 1 via the communication transceiver 110 and the communication line 126 .

The SOC adjustment charge/discharge value determination unit 113 determines the adjustment command value distributed from the renewable energy power generator command controller 1 to the WF site 100 via the communication transmission/reception unit 110 and the communication line 126, the associated storage battery charge/discharge value, and the wind turbine. receive the output upper limit command value. Also, SOC adjustment charge/discharge value determination unit 113 receives the SOC of the storage battery from storage battery system 116 . The storage battery charge/discharge value that makes the SOC of the storage battery closer to the SOC target value is corrected from an adjustment command value, a storage battery charge/discharge value, a wind turbine output upper limit command value, a storage battery SOC, and a preset SOC target value. Then, the wind turbine output upper limit command value is sent to the wind power generation system 115 , and the storage battery charge/discharge value is sent to the storage battery system 116 .

The wind power generation system 115 receives the output upper limit command value, and if the wind is not sufficiently blowing, the wind power generation system 115 generates power below the value and sends it to the power line 122 . Also, the output of the generated windmill is sent to the result recording unit 114 .

The storage battery system 116 receives the storage battery charge/discharge value, and charges/discharges to reach that value. For example, if SOC=30%, the discharge amount is 0. The storage battery system 116 sends the charged/discharged power to the power line 123 and sends the charge/discharge value to the result recording unit 114 .

The result recording unit 114 records the output of the generated windmill, the charge/discharge value of the storage battery system 116, and the output values measured by the power meters M101, M102, and M103, and sends them to the renewable energy generator command controller 1.

Here, when the system operator requests the power to be sold as control power and the power to be sold as wind power generation as measured values, the power of the power line 122 and the power of the power line 123 use the BTB 119. Then, the power is divided into power to be sold as control power and power to be sold as wind power generation, and is sent to power lines 125 and 124 .

The converter control unit 112 receives the adjustment command value distributed to the WF site 100 from the renewable energy generator command controller 1 via the communication transmission/reception unit 110 and the communication line 126, and the power flow for the adjustment command value is transmitted to the power line. 125 controls BTB 119 to split the power flow so that the remainder is diverted to power line 124 . In FIG. 3, 117, 118, 121 and 122 are transformers for voltage regulation.

Although the configuration of the WF site 100 has been described above with reference to FIG.

FIG. 4 is a diagram showing an operational flow example of a renewable energy generator command controller and each WF site. It should be noted that although the description will be made assuming that there are three WF sites, the number of the constituent elements of each WF site will be described using the number of the WF site 100 as a representative.

First, in step S101, the wind turbine output of the WF sites 100 to 300 and the charge/discharge value determination unit 111 determine the fluctuation mitigation charge/discharge value. In step S001, the communication transmission/reception unit 5 of the renewable energy generator command controller 1 receives the data.

Renewable energy generator command controller 1 receives wind power information (wind output) from each WF site, fluctuation mitigation upper and lower limit values, measured values of power meters M101 to M103, charge/discharge necessary for fluctuation mitigation of storage battery system 116 Values and the like are received, and based on each of these pieces of information, in step S002, the available controllable power amount calculation unit 2 calculates the available controllable power amount of the WF sites 100 to 300 for up trades and down trades ( See Figure 5).

Next, in steps S003-1 and S003-2, the available controllable power amount priority order calculation unit 3 performs the controllable power available amount priority ranking calculation (see FIGS. 6 and 7). Further, in step S004, the communication transmitting/receiving unit 5 receives a command for an adjustment command value from the system operator. In step S005, each WF adjusting force distribution calculation unit 4 performs each WF adjusting force distribution calculation. In step S006, the communication transmitting/receiving unit 5 transmits the result of each WF adjustment force distribution calculation to the WF sites 100-300.

In steps S101 and S002 described above, the WF sites 100, 200, and 300 calculate the charge/discharge required for the fluctuation mitigation requirements and for providing the adjustability. At this time, there is a limit to the kW capacity that can be output per unit time of the storage battery, and this limit value varies depending on the SOC state. If the SOC is too high or too low, the charge/discharge kW capacity will decrease.

The WF sites 100, 200, 300 receive the result of each WF adjustment force distribution calculation in step S103. In step S104, the SOC adjustment charge/discharge value determination unit 113 determines the SOC adjustment charge/discharge value based on the result of each WF adjustment force distribution calculation, the SOC value of the storage battery system 116, and the charge/discharge value required for variation mitigation. If the SOC value is within the range of the target value, the charge/discharge value for SOC adjustment is 0, but if not, the charge/discharge may be performed according to the fluctuation mitigation situation.

In step S105, the BTB 119 is controlled to flow through the power line 125 the power of the adjustment force command value assigned to its own WF site (100 to 300) received by the converter control unit 112, and the BTB 119 operates and adjusts according to the control. The power of the force command value is passed through the power line 125 .

In step S106, the results recording unit 114 records the wind turbine output and the storage battery charge/discharge value (results record), and transmits them to the renewable energy generator command controller 1 in step S107. And the renewable energy generator command controller 1 receives in step S007.

Alternatively, when the fluctuation mitigating charge/discharge value is determined in step S101, each WF immediately starts charging/discharging for fluctuation mitigation, and then, after receiving the control power instruction in step S103, performs charging/discharging including providing control power. There are ways to get started. Each WF has the effect of being able to avoid deviating from fluctuation mitigation between steps S101 and S103 even when the wind condition suddenly changes.

FIG. 5 is a diagram for explaining fluctuation mitigation control and a method of calculating the amount of adjustment power provided. The wind turbine output of the WF site 100 in FIG. 3 and the processing of the charge/discharge value determination unit 111 and the fluctuation mitigation control in this embodiment will be described with reference to FIG. WF sites 200 and 300 are the same.

The electric power measured by the electric power meter M103 in FIGS. 1 and 3 is the sum of the electric power sold as the control power measured by the electric power meter M101 and the electric power sold as wind power measured by the electric power meter M102. . In order to ensure the stability of the power system, it is required to suppress fluctuations in the power measured by the power meter M103 to a certain level or less.

In this embodiment, as described above, the requirement for this fluctuation mitigation is that the maximum and minimum values for n minutes are a% or less of the rated capacity of the WF site i. In this requirement, the upper limit of fluctuation mitigation at a certain time is the sum of the minimum value for the last n minutes and a% of the rated capacity. The lower limit of fluctuation mitigation is a value obtained by subtracting a% of the rated capacity from the maximum value for the last n minutes. It should be noted that the wind power generation value without wind suppression corresponds to the renewable energy power generation value.

In the case of (i) in FIG. 5, the wind power generation value without wind suppression is within the range of upper and lower limit values for fluctuation mitigation, and fluctuation mitigation control is performed so that the charge/discharge output value of storage battery system 116 is zero.
In the case of (ii) in FIG. 5, the wind power generation value without wind suppression exceeds the upper limit value of fluctuation mitigation, and the charging/discharging output value of the storage battery system 116 performs charging at _cs .
In the case of (iii) in FIG. 5, the wind power generation value without wind suppression is below the lower limit value of fluctuation mitigation, and the charge/discharge output value of the storage battery system 116 discharges at _ds .

At this time, the chargeable amount and the dischargeable amount change depending on the SOC value (charging rate) of the storage battery system 116. The chargeable amount Fc (SOC) calculated from the SOC and the dischargeable amount Fd (SOC) calculated from the SOC are respectively changed. )given that,
In the case of (ii) in FIG. 5, the smaller value of _cs and Fc(SOC), that is, the minimum value (| _cs |, |Fc(SOC)|), can actually be charged. The absolute value is compared because the rechargeable battery has a negative value.
In the case of (iii) in FIG. 5, the smaller value of ds _and Fd(SOC), that is, the minimum value ( _ds and Fd(SOC)), can actually be discharged.

The adjustability provideable amount in step S002 of FIG. 4 is calculated as follows.
In the case of (i) in FIG. 5, the wind power generation value without wind suppression falls within the upper and lower limit values of fluctuation mitigation, and the adjustability available amount for the up trade is _da . The amount of adjustability that can be provided for a bear trade is _ca. With these values, the power measured by the power meter M103 can satisfy both the requirement for alleviating fluctuations and the provision of controllability.
d _a = upper limit - WF output before control c _a = - (WF output before control - lower limit)

In the case of (ii) in FIG. 5 , the amount that can be provided for the raise trade is 0 because the upper limit of fluctuation mitigation is exceeded if the raise trade is accepted. Although it is possible to accept a downward transaction, it is effective to lower the order of priority for the reason explained in FIG. 11, which will be described later.
d _a =0
c _a = - (upper limit - lower limit)

In the case of (iii) in FIG. 5 , if a bearish trade is accepted, the amount falls below the lower limit of fluctuation mitigation, so the available amount for a bearish trade is zero. Although an up transaction can be accepted, it is effective to lower the priority for the reason explained later with reference to FIG. 11 .
d _a = upper limit - lower limit c _a = 0

FIG. 6 is a diagram showing an example of a calculation flow of the adjustment power provision amount and the priority order of the raising transaction. The processing of step S003-1 in FIG. 4 will be described in detail using FIG.
In step S200, the controllable power available amount calculator 2 initializes a variable i (i=0).
In step S201, the controllable power available amount calculator 2 determines whether or not the variable i is smaller than the number of WF sites. If the variable i is smaller than the number of WF sites (step S201, Yes), proceed to step S202, and if the variable i is not smaller than the number of WF sites (step S201, No), calculate the amount of adjustment power provided and the priority of the raise trade. exit.

In step S<b>202 , the provideable power amount calculator 2 initializes to 0 a variable value that stores the provideable power amount with rank. Md _a [i, 0 to 2] is an array variable that stores the amount of controllability that can be provided for discharge (upward trading), and is stored in an array variable with a smaller subscript as the controllability is actively provided. That is, if the adjustability provisionable amount x is to be actively provided, it is stored in Md _{a [} i, 0]; Store in Md _a [i, 1].

In step S203, the controllable power available amount calculation unit 2 stores the controllable power available amount of the up transaction (discharge) calculated in step S002 in FIG. 4 in Md _a [i, 1]. If it is decided from the information received in step S001 of step S001 whether there will be merits or demerits for WF site i by responding to the increase transaction (discharge), and whether to actively provide or passively provide the adjustability provisionable amount divide.

If there is merit, (3) is taken, and in step S210, the value of Md _a [i, 1] is moved to Md _a [i, 0] so that the allocation can be actively received with priority. That is, Md _a [i, 0] has a higher priority than Md _a [i, 1].

If there is a demerit, the branch of (2) is taken, and in order to lower the priority of WF site i so that other WF sites can be positively assigned preferentially, in step S209 the value of Md _a [i, 1] to Md _a [i,2]. If neither is true, the branches are (1), (4), and (5), and the adjustability provideable amount is stored as it is in Md _a [i, 1].

The classification in step S204 is performed as follows.
In step S205, it is determined whether or not the WF output before control when the wind speed is high and the output is not controlled is greater than the upper limit value of variation mitigation. If the determination in step S205 is Yes, it is a situation in which adjustment power cannot be provided for an increase transaction (see case (ii) in FIG. 5). This is because the storage battery system 116 needs to be charged so that the total value of the amount of charge in the storage battery system 116 and wind power generation becomes the upper limit value for alleviating fluctuations. For this reason, the adjustability provideable amount for the up transaction (discharge) calculated in step S002 of FIG. 4 is 0, so Md _a [i, 1]=0, and the value is held as it is. Then, the process proceeds to step S211.

If the determination in step S205 is No, it is determined in step S206 whether the wind speed is low and the pre-control WF output, which is not subjected to output control, is smaller than the lower limit of variation mitigation. If the determination in step S206 is No, it is a situation in which adjustment power for an increase transaction can be provided (see case (i) in FIG. 5).

In step S208, it is determined whether the SOC value of WF site i is high and discharge is required. Specifically, it is determined whether the difference between the preset SOC upper limit value and the SOC value of the WF site i is smaller than a preset constant k. For example, if the SOC upper limit is 95% and the SOC value of WF site i is 93%, the difference is 2%, and if the constant k is 5%, the difference is smaller than the constant k (2%<5%). . The battery system 116 is almost fully charged and needs to be discharged.

If the determination in step S208 is Yes (discharge is necessary) and the adjustment command value is an increase trade (discharge), by allocating to WF site i, while providing the adjustment command value, WF site i , the SOC value of the storage battery system 116 can be brought close to an appropriate value. Therefore, the process proceeds to step S210 so that the adjustment command value is preferentially assigned.

In step S210, as described above, the value of Md _a [i, 1] is moved to Md _a [i, 0] so that it can be actively assigned with priority. Also, set the value of Md _a [i,1] to zero. Then, the process proceeds to step S211.

If the determination in step S208 is No (discharging is not required), the WF site i has no advantage or disadvantage in being preferentially assigned, so the priority is normal. Then, the process proceeds to step S211.

If the determination in step S206 is Yes, it can be considered that the WF site i is discharging and does not want to increase the output because the output is decreasing (see case (iii) in FIG. 5). WF site i has the advantage of refraining from providing adjustment power to prepare for discharge of fluctuation mitigation in the future. Therefore, it is desired to lower the priority of WF site i so that the adjustment command value is assigned to sites other than WF site i.

In step S207, it is determined whether the SOC value of WF site i is high and discharge is required. If Yes (discharge is required) and the adjustment command value is an increase transaction (discharge), by allocating to WF site i, while providing the adjustment command value, the SOC of the storage battery system 116 of WF site i is discharged by discharging It has the advantage of bringing the value closer to an appropriate value. However, as described above, contrary to the judgment in step S206, the situation is that it is desired to refrain from discharging, so the priority is set to normal. Then, the process proceeds to step S211.

If the determination in step S207 is No (discharging is unnecessary), the priority is normal from the SOC value, but since it is desired to refrain from discharging from the determination in step S206, the priority of WF site i is lowered, so the process proceeds to step S209. proceed.

In step S209, as described above, the value of Md _a [i, 1] is changed to Md _a [ i, 2]. Also, set the value of Md _a [i,1] to zero. Then, the process proceeds to step S211.

In step S211, 1 is added to the variable i, and the process returns to step S201.

FIG. 7 is a diagram showing an example of a calculation flow of the adjusting power provision amount and the priority order of the downward trade. The processing of step S003-2 in FIG. 4 will be described with reference to FIG.

In step S200d, the controllable power available amount calculator 2 initializes the variable i (i=0). In step S201d, the controllable power available amount calculator 2 determines whether or not the variable i is smaller than the number of WF sites. If the variable i is smaller than the number of WF sites (step S201d, Yes), proceed to step S202d, and if the variable i is not smaller than the number of WF sites (step S201d, No), calculate the adjustability provision amount and the priority of the downward trade. exit.

In step S202d, the provideable power amount calculation unit 2 initializes to 0 the variable value that stores the provideable power amount with rank. Mc _a [i, 0 to 2] is an array variable that stores the amount of controllability that can be provided for charging (downward trading), and is stored in an array variable with a smaller subscript as the controllability is actively provided. That is, if the adjustability provideable amount x is desired to be actively provided, it is stored in Mc _{a [} i, 0]; Store in Mc _a [i, 1].

In step S203d, the controllable power available amount calculation unit 2 stores the controllable power available amount of the downward transaction (charging) calculated in step S002 of FIG. 4 in Mc _a [i, 1]. If it is decided from the information received in step S001 of step S001 whether there will be merits or demerits for WF site i by responding to the downward transaction (charging), and whether to actively provide or passively provide the adjustability provisionable amount divide.

If you want to actively provide the adjustability provisionable amount x for the down trade, store it in Mc _a [i, 0], if you want to provide it passively, store it in Mc _a [i, 2]. Otherwise, store in Mc _a [i,1].

If there is merit, the branch is taken to (3), and the value of Mc _a [i, 1] is moved to Mc _a [i, 0] in step S210d so that it can be positively assigned with priority. If there is a demerit, the branch of (2) follows. In order to lower the priority of WF site i so that other WF sites can be positively assigned with priority, in step S209d the value of Mc _a [i, 1] to Mc _a [i,2]. If neither is true, the branches are (1), (4), and (5), and the adjustability provideable amount is stored in Mc _a [i, 1] as it is.

The classification in step S204d is performed as follows.
In step S205d, it is determined whether the wind speed is small and the WF output before control is smaller than the lower limit value for alleviating variation. If the determination in step S205d is Yes, it is a situation in which adjustment power cannot be provided for downward trading (see case (iii) in FIG. 5). This is because the storage battery system 116 needs to be discharged so that the total value of the charge amount of the storage battery system 116 and the wind power generation becomes the lower limit value for alleviating fluctuations. For this reason, since the adjustability provisionable amount of the downward transaction (charging) calculated in step S002 of FIG. 4 is 0, Mc _a [i, 1]=0, and the value is held as it is. Then, the process proceeds to step S211d.

If the determination in step S205d is No, it is determined in step S206d whether the wind speed is high and the WF output before control, which is not subjected to output control, is greater than the upper limit value for alleviating variation. If the determination in step S206d is No, it is a situation in which adjustment power for downward trading can be provided (see case (i) in FIG. 5).

In step S208d, it is determined whether the SOC value of WF site i is low and charging is required. Specifically, it is determined whether the difference between the preset SOC upper limit value and the SOC value of the WF site i is smaller than a preset constant k. For example, if the SOC lower limit is 30% and the SOC value of WF site i is 33%, the difference is 3%, and if the constant k is 5%, the difference is smaller than the constant k2 (3%<5%). . The storage battery system 116 does not have much charge, and charging is required.

If the determination in step S208d is Yes (charging is required) and if the adjustment command value is a downward transaction (charging), by allocating to WF site i, while providing the adjustment command value, WF site i , the SOC value of the storage battery system 116 can be brought close to an appropriate value. Therefore, the process proceeds to step S210d so that the adjustment command value is preferentially assigned.

In step S210d, the value of Mc _a [i, 1] is moved to Mc _a [i, 0] in step S 210 d so as to be preferentially and actively allocated as described above. Also, set the value of Mc _a [i,1] to zero. Then, the process proceeds to step S211d.

If the determination in step S208d is No (charging is not required), the WF site i has no advantage or disadvantage in being preferentially assigned, so the priority is normal. Then, the process proceeds to step S211d.

If the determination in step S206d is Yes, it can be considered that the WF site i is in the process of increasing its output and does not want to lower its output by charging (see case (ii) in FIG. 5). WF site i has the advantage of refraining from providing adjustment power to prepare for discharge of fluctuation mitigation in the future. Therefore, it is desired to lower the priority of WF site i so that the adjustment command value is assigned to sites other than WF site i.

In step S207d, it is determined whether the SOC value of WF site i is low and charging is required. If Yes (charging is required) and the adjustment command value is a lower transaction (charging), by allocating it to WF site i, the SOC of the storage battery system 116 of WF site i is provided by charging while providing the adjustment command value. It has the advantage of bringing the value closer to an appropriate value. However, as described above, contrary to the judgment in step S206d, it is in a situation where it is desired to refrain from charging, so the priority is set to normal. Then, the process proceeds to step S211d.

If the determination in step S207d is No (charging is unnecessary), the priority is normal from the SOC value, but since it is desired to refrain from charging from the determination in step S206d, the priority of WF site i is lowered, so the process proceeds to step S209d. proceed.

In step S209d, as described above, the value of Mc _a [i, 1] is changed to Mc _a Move to [i,2]. Also, set the value of Mc _a [i,1] to zero. Then, the process proceeds to step S211d.

In step S211d, 1 is added to the variable i, and the process returns to step S201d.

FIG. 8 is a diagram showing an example of the calculation result of the adjusting power provision amount and the priority of the raising transaction. FIG. 9 is a diagram showing an example of the calculation result of the adjusting power provision amount and the priority order of the downward trade. FIG. 8 and FIG. 9 show examples of the controllability provisionable amount and rank calculation results for each of the WF sites 100, 200, and 300 by the processing of steps S003-1 and S003-2 of FIG.

FIG. 8 is the priority and adjustability availability [MW] for up trades. Md _a [i,x] is the configurable amount of discharge that can be provided from WF site i at priority rank x. In the example of FIG. 8, the WF site 100 has a normal priority rank for the up transaction, and the adjustability that can be provided is 200 (see the column of (WF site 100, _Mda [i, 1])). . The WF site 200 has a high priority rank for the up transaction, and the adjustability supply capacity that can be provided is 150 (see the column of (WF site 200, _Mda [i,0])). The WF site 300 has a low priority rank for the up transaction, that is, it is in a situation where it is not desired to provide it if possible, but the amount of adjustment power that can be provided is 250 ((WF site 300, Md _a [i, 2]). column).

Upon receipt of the adjustment order for the raise transaction, it is first assigned to the WF site 200, then to the WF site 100, and finally to the WF site 300.

FIG. 9 is the priority and adjustability availability [MW] for down trades. Mc _a [i, x] is the adaptability of the discharge that can be provided from WF site i at priority rank x. In the example of FIG. 9, the WF site 100 has a lower priority rank of normal, and the adjustability that can be provided is -100 (see the column of (WF site 100, Mc _a [i, 1]). ). The WF site 200 has a lower priority rank for the downward trade, and the adjustability provisionable amount that it can provide is -200 (see the column of (WF site 200, Mc _a [i, 2])). The WF site 300 has a high priority rank for downward trading, and the amount of adjustability that can be provided is −150 (see the column of (WF site 300, Mc _a [i, 0])).

Down trades are assigned first to WF site 300, then to WF site 100, and finally to WF site 200.

FIG. 10 is a diagram showing an example of a calculation flow for allocating command values to wind power generation sites. Here, the cycle constraint will be explained. The storage battery systems 116 installed at the WF sites 100, 200, and 300 are expected to operate for the target number of years, but deteriorate with charging and discharging. ] must be restricted. C=AB [kWh], which is obtained by subtracting the annual total amount of charging/discharging predicted value B [kWh] used for fluctuation mitigation from A, is the annual total amount of charging/discharging that can be used to provide adjustment power. In this embodiment, a technique for assigning adjustment command values considering cycle constraints will be described.

10, the procedure for calculating the adjustment command value R[i] of the WF site i will be described as details of the processing in step S005 of FIG. 4 in the case of an up transaction. Each WF adjustment force distribution calculator 4 executes this process.

In step S301, the remaining charge/discharge amount of the storage battery system 116 of the WF sites 100 to 300 that can be used for providing control power is calculated, and the WF site with a large remaining (remaining value) is given a higher (lower value) order of the cycle constraint reserve capacity. ).

At step S302, the adjustment command value R[i] of the WF site i is initialized to zero. In step S303, first, Md _a [i, 0] having a high priority is assigned to the adjustment command value. Md _a [0,0], Md _a [1,0], and Md _a [2,0] have the same priority of 0, and among them, the priority is further determined as follows.

Md _a [i, 0] are arranged in order of the cycle constraint spare capacity of WF site i, and only Md _a [i, 0] is assigned to the adjustment command value R[i] of WF site i in that order. If the total value of Md _a [i,0] is greater than the required adjustment command value, then the assignment to the last WF site i in priority order is such that the sum of the adjustment command values assigned to the WF sites equals the overall adjustment command value. Allocate a portion of Md _a [i,0] such that As an example, if the overall adjustment command value is 50 in the situation of Md _a [i, 0] shown in FIG.

In step S304, it is checked whether or not the allocation to each WF site has covered the overall adjustment command value. No), the process ends.

In step S305, similarly to step S303, an adjustment command value is assigned to the WF site from the adjustability provideable amount Md _a [i, 1] of normal priority. In step S306, it is checked whether or not the total value (R[0]+R[1]) for i of allocation R[i] up to that point has reached the overall adjustment command value. Yes), proceed to step S307; otherwise (step S306, No), end the process. As an example, if the overall adjustment command value is 200 in the situation of Md _a [i, 1] as shown in FIG.

In step S307, an adjustment command value is assigned to the WF site from the low-priority adjustability provideable amount Md _a [i, 2], and the process ends.

FIG. 11 is a diagram for explaining the influence of the provision of controllability on fluctuation mitigation. Here, the influence of provision of control power on wind fluctuation mitigation will be explained. FIG. 11 illustrates a situation in which the WF output decreases rapidly and the output decrease speed is suppressed by providing the adjustment force.

When the wind power suddenly weakens and the wind output without output control falls below the lower limit value for alleviating fluctuations, the storage battery system 116 (ESS) is discharged, and the output of the wind power generation system 115 (WF) and the storage battery system 116 (ESS) are discharged. The total discharge output (the output value measured by the power meter M103) is made to be the lower limit of fluctuation mitigation.

If the requirement for fluctuation mitigation is to ensure that the maximum and minimum values for n minutes (n = 20 in the figure) are a% or less of the rated capacity of WF site i (a = 10 in the figure), (i) adjustability If there is no provision, the output can be reduced by a% of the rated capacity in n minutes at the fastest. However, in this situation, if x% of the rated capacity shown in (ii) is provided at time t, after time t + n minutes, the lower limit will be a% lower than the maximum value (ax) The output can only be lowered by %. Therefore, the storage battery system 116 has to discharge a considerable amount of the hatch, and the SOC value of the storage battery of the storage battery system 116 may decrease, making it impossible to mitigate fluctuations.

Therefore, if the WF site i is in such a situation, it is determined in step S206 of FIG. 6 in order to lower the priority of providing controllability. Lower the priority by judging whether it is smaller than the fluctuation mitigation lower limit.

Further, contrary to FIG. 11, in a situation where the WF output suddenly increases, it is better to avoid providing the downward adjustment force in order to maximize the output increase speed by providing the adjustment force. Therefore, if WF site i is in such a situation, in order to lower the priority of providing controllability, it is determined in step S206d of FIG. 7 whether or not this situation exists. Decrease the priority by determining whether it is greater than the fluctuation mitigation upper limit.

As described above, the first embodiment has been described by taking wind power generation as an example of a renewable energy power generator, but the same applies to other renewable energy power generators.

(Modification)
In FIG. 6 , when the renewable energy power generation value of an arbitrary site is declining, the controllability provisionable amount priority calculation unit 3 shows a method of lowering the priority of the site in the increase trade controllability provision. However, a method of increasing the priority in downward trading may also be used.

That is, in FIG. 6, if the determination in step S206 is Yes (do not want to increase the output by thrusting discharge while the output is falling) and the determination in step S207 is No (no discharge is required), the priority of the site is determined in step S209. lower. If step S209 in FIG. 6 and step S210d in FIG. 7 are executed, the priority in the downward trade can be increased.

Conversely, in FIG. 7, if the renewable energy power generation value of an arbitrary site is rising, the adjustment power available amount priority calculation unit 3 lowers the priority of the site in the down transaction adjustment power provision. Although the method has been shown, it may be a method of increasing the priority in the up transaction. By executing step S209d in FIG. 7 and step S210 in FIG.

Further, the determination that the renewable energy power generation value of an arbitrary site is decreasing/increasing can be made by the following determinations in addition to the determinations in steps S205 and S206 in FIG. 6 and steps S205d and S206d in FIG. The same effect can be obtained depending on the method.

For example, there is also a method of determining whether or not all the pre-control WF output values for the last five minutes are outside the upper and lower limits of fluctuation mitigation. The judgments in steps S205 and S206 in FIG. 6 and steps S205d and S206d in FIG. 7 are made in a simple time section of the current time. Increased certainty. 5 minutes can be any time.

Alternatively, since the WF output value before control fluctuates from short-term fluctuations, the average value of the WF output value before control for the previous 5 minutes is calculated, and this average value is outside the upper and lower limits of fluctuation mitigation. There are other ways to determine whether Alternatively, find an approximation function for the elapsed time Δt of the WF output value before control for the previous 5 minutes (for example, first-order approximation) and determine whether the approximation line or the approximation at the current time is outside the upper and lower limits of fluctuation relaxation. there is a way to do it. There is also a method of predicting the future WF output value before control from the approximation line and determining whether or not it is outside the predetermined threshold range. Also, if the variation in the pre-control WF output value is equal to or greater than a preset threshold value during both rising and falling, it is desirable to charge and discharge the storage battery to mitigate the variation, so there is also a method of lowering the priority rank. be. As for the alternative plan above, 5 minutes may be an arbitrary time.

In the embodiment, an example of calculating the transaction adjustment power provision amount of raising or lowering based on the current pre-control WF output value was shown, but instead of the current pre-control WF output value, the value of the power generation value prediction by weather forecast By using , there is an effect of reducing the error in the amount of trading adjustment power provided due to delays in communication and WF control.

Also, when the renewable energy power generation value is small, the fluctuation is small, and when the power generation value is large, the fluctuation is large. Therefore, if the renewable energy generation value of any site is lower than the threshold, the site will be given higher priority in providing trading adjustment capacity for raising or lowering, or if the renewable energy generation value of any site is lower than the threshold If it is higher, the site should be deprioritized in providing up or down trading power. Also, as the power generation value, a value of power generation value prediction based on weather prediction may be used.

That is, the controllable power available amount calculation unit 2 may use a renewable energy power generation prediction value of an arbitrary site based on weather forecast as the renewable energy power generation value of the site.

In the wind turbine output and charge/discharge value determination unit 111 shown in FIG. 3, in order to leave a margin for providing adjustment power, the fluctuation mitigation requirement is that the maximum and minimum values for n minutes are a% or less of the rated capacity of the WF site 100. A larger amount of adjustment can be provided by calculating the charge/discharge value necessary for alleviating fluctuations by setting b% where b>a. If the unit price of control power is higher than the unit price of wind turbine supply, controlling with b% can be expected to have the effect of increasing profits.

In FIG. 10, in steps S306 and S307, the adjustment amount provideable amount Md _a [i, 2] with a low priority rank is also provided to the adjustment power. The renewable energy power generator command controller 1 retains the control force non-attainment rate history and the preset control force non-attainment rate threshold value, and determines the control force non-attainment for an arbitrary period based on the control power non-attainment rate history. A method may be used in which the rate is obtained and, if it is lower than the control force non-attainment rate threshold value, step S307 is not performed, that is, the adjustment command value of each WF site is not added.

Alternatively, a fluctuation mitigation deviation rate history and a fluctuation mitigation deviation rate threshold value are held in the renewable energy power generator command controller 1, a fluctuation mitigation deviation rate for an arbitrary period is obtained from the fluctuation mitigation deviation rate history, and the fluctuation mitigation deviation rate is calculated. If it is higher than the threshold value, a method of not performing step S307 may be used. Alternatively, there is also a method of determining the order of priority between fluctuation mitigation and the provision of control power based on the control power non-attainment rate and fluctuation mitigation deviation rate for an arbitrary period, and determining whether or not to implement step S307. These methods may be switched according to the unit price of supply power selling and adjustment power selling. Since this method can control the magnitude of the adverse effect on fluctuation mitigation, it is possible to maximize the profit from power sales according to the unit price of supply power sales and adjustment power sales.

<<Second Embodiment>>
A second embodiment will be described below. In the first embodiment, as shown in FIG. 1, the WF sites 100, 200, and 300 are the same as the WF site 100 described above, but as shown in FIG. good.

The WF site 200 of FIG. 12 is configured such that the fluctuation mitigation requirement is applied to the power measured by the power meter M202. In this case, as described with reference to FIG. 11, there is no influence on the fluctuation mitigation situation due to provision of controllability, so steps S205 and S206 in step S204 of FIG. Similarly, steps S205d and S206d in step S204d of FIG. 7 are applied as No determinations.

The WF site 300 of FIG. 12 (see FIG. 1) is not attached to a renewable energy generator site, but is a storage battery system 116 dedicated to providing control power or for backup. If it is dedicated to providing the adjustability, this WF adjustability available amount priority may be normal. If it is for backup, it is better to calculate the necessary risk of backup and lower the priority if the risk is high. Also, regardless of which type of storage battery is used, the priority is set to be higher when the total remaining amount of control power provided by the cycle constraint is larger. In this case, instead of the charge/discharge values required for fluctuation mitigation, the WF site will send the currently required charge/discharge values to the renewable energy generator command controller 1 .

12 may be provided in multiple sets, and a configuration having a higher-level renewable energy power generator command controller that commands an adjustment command value for each renewable energy power generator command controller 1 can be used in the same manner. In this case, each renewable energy generator command controller 1 transmits the information (including priority rank) collected from each WF site as it is to the upper renewable energy generator command controller, The controller receives the overall adjustment command value from the grid operator and distributes the adjustment command value to each renewable energy generator command controller 1 using a priority rank. With this method, the adjustment command value can be distributed to a WF site that can easily provide adjustment power from among a larger number of WF sites.

In the first and second embodiments, three WF sites are described as examples, but two or four or more WF sites can be similarly applied.

The renewable energy power generator command controller 1 of the present embodiment receives an adjustment command value command, calculates the adjustment command values for the storage batteries installed separately at two or more sites, and sums the calculated adjustment command values according to the received adjustment command value. A renewable energy generator command controller that commands the site to achieve a value, receiving the renewable energy power generation value of the site and the charge/discharge value of the storage battery and the charging rate of the storage battery for mitigating renewable energy power generation fluctuations At least one numerical value of a renewable energy power generation value, a storage battery charging/discharging value for mitigating renewable energy power generation fluctuations, and a storage battery charging rate. and the adjustment command for each site from the adjustment command value based on the calculation results of the available controllability amount priority calculation unit that calculates the priority of the controllability supply amount for each site from It has an adjustment force distribution calculation unit that calculates the value.

According to this embodiment, when calculating the priority from the numerical values, the controllable power available amount priority calculation unit 3 receives the target charging rate of the storage battery of the arbitrary site, and charges the storage battery of the arbitrary site. If the rate is less than the target charging rate, the site is given higher priority in providing downside trading capacity, and if it is greater than the target charging rate, the site is given higher priority in providing upside trading capacity. As a result, the charging rate of the storage battery at any site can be adjusted to an appropriate value, and a large amount of supply and demand adjustment capacity can be supplied to the grid.

In addition, when calculating the priority from the numerical values, if the renewable energy power generation value of an arbitrary site is declining, the adjustability supply available amount priority calculation unit 3 Decrease a site's priority or increase its priority in a down-deal. Thereby, the renewable energy generator command controller 1 can appropriately select the supply and demand adjustment capacity.

Similarly, when calculating the priority order from the numerical value, if the renewable energy power generation value of an arbitrary site is Decrease the priority of the site or increase the priority in the up trade. Thereby, the renewable energy generator command controller 1 can appropriately select the supply and demand adjustment capacity.

In addition, the controllable power available amount priority calculation unit 3 calculates the charge/discharge value of the storage battery necessary for alleviating fluctuations in renewable energy power generation at each site, the output upper limit command value for renewable energy power generation, and the output suppression of renewable energy power generation. Using either the output value or the charging rate of the storage battery when no Thereby, the renewable energy generator command controller 1 can appropriately select the supply and demand adjustment capacity.

In addition, the controllable power available amount priority calculation unit 3 lowers the priority of a site with a small residual controllable power total amount due to the cycle constraint of the storage battery, or increases the priority of a site with a large total controllable power supply total amount remaining value. . In other words, as shown in step S301 in FIG. 10, it is preferable to lower the priority of sites with no spare capacity for cycle constraints or to raise the priority of sites with spare capacity for cycle constraints.

According to this embodiment, wind farm-owned variability mitigation batteries can be used to provide more battery capacity for balancing capacity while meeting renewable energy variability mitigation requirements.

According to the renewable energy power generator command controller 1 of the present embodiment, it is possible to provide more controllability by using the storage battery for wind fluctuation mitigation, and wind power generation companies can improve their profits. Also, the power system operator can maintain the stability of the power system.

1 renewable energy generator command controller 2 controllable power available amount calculator 3 controllable power available amount priority calculator 4 each WF controllable power distribution calculator (controllable power distribution calculator)
5 Communication transmitter/receiver 10 Renewable energy generator system with storage battery 107 WF controller 100, 200, 300 WF site (wind power generation site, site)
111 wind turbine output and charge/discharge value determination unit 112 converter control unit 113 SOC adjustment charge/discharge value determination unit 114 performance recording unit 115 wind power generation system 116 storage battery system 117, 118, 120, 121 transformer 119 BTB (Back to Back)
122, 123, 124, 125 Power line 126 Communication line M101, M102, M103 Power meter M201, M202, M203 Power meter M301, M302, M303 Power meter

Claims (10)

Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
In the case of calculating the priority from the numerical value, the controllable power available amount priority calculation unit receives a target charging rate of a storage battery at an arbitrary site, and the charging rate of the storage battery at the arbitrary site is calculated according to the target charging If the rate is smaller than the target charging rate, the site is given higher priority in providing downward transaction adjustment power, and if it is higher than the target charging rate, the site is given higher priority in providing upward transaction adjustment power. Generator command controller. Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
If the renewable energy power generation value of an arbitrary site is declining when calculating the priority order from the numerical value, the adjustability provisionable amount priority calculation unit A renewable energy generator command controller characterized by de-prioritizing or de-prioritizing in a down-trading. Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
If the renewable energy power generation value of an arbitrary site is rising when calculating the priority from the numerical value, the adjustability provisionable amount priority calculation unit may A renewable energy generator command controller characterized by lowering priority or increasing priority in a raise deal. Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
The adjustable power available amount priority calculation unit calculates a charge/discharge value of a storage battery necessary for mitigating fluctuations in renewable energy power generation at each site, an output upper limit command value for renewable energy power generation, and an output suppression for renewable energy power generation. A renewable energy power generator command controller that determines the priority between each site for providing regulating power by using either the output value in the case where the power supply is not performed or the charging rate of the storage battery. Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
The controllable power available amount priority calculation unit lowers the priority of a site with a small remaining controllability provision total amount due to the cycle constraint of the storage battery, or increases the priority of a site with a large controllability provision total amount remaining value. A renewable energy generator command controller characterized by: Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
The control force distribution calculation unit calculates a control force non-attainment rate for an arbitrary period, and if the control force non-attainment rate is smaller than a preset control force non-attainment rate threshold value, the control force distribution calculation unit has a low priority control force. is not added to the adjustment command value. Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
the site is a wind farm site,
The adjustment power available amount priority calculation unit calculates the storage battery charge/discharge value necessary for mitigating wind power fluctuations at each site, the wind turbine output upper limit command value, the output value when the wind turbine output is not suppressed, and the storage battery charging rate. A renewable energy generator command controller characterized by determining the priority between each site for provision of coordination power using any of Renewable energy that receives a command of an adjustment command value, calculates the adjustment command value of the storage battery installed separately at two or more sites, and commands the site so that the total becomes the adjustment command value that received the command. A generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each site from the adjustment command value based on the calculation result of the control force available amount priority calculation unit;
The renewable energy generator command controller, wherein the adjustable power supply available amount calculation unit uses a renewable energy power generation forecast value of an arbitrary site based on weather forecast as the renewable energy power generation value of the site. A controllable power supplyable amount calculation unit that receives from a site a renewable energy power generation value, a charge/discharge value of a storage battery for mitigating renewable energy power generation fluctuations, and a charging rate of a storage battery, and calculates a controllable power supplyable amount of the site;
Provision of adjustment power for calculating a priority of the amount of adjustment power that can be provided at the site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery a capacity priority calculation unit;
an adjustment force distribution calculation unit that receives an adjustment command value and calculates an individual adjustment command value to be distributed to the site from the adjustment command value based on the priority order ;
In the case of calculating the priority from the numerical value, the controllable power available amount priority calculation unit receives a target charging rate of a storage battery at an arbitrary site, and the charging rate of the storage battery at the arbitrary site is calculated according to the target charging If it is less than the rate, the site is given a higher priority in providing downward transaction adjustment power, and if it is greater than the target charging rate, the site is given a higher priority in providing upward transaction adjustment power.
A renewable energy generator command controller characterized by: two or more sites having renewable energy generators with storage batteries;
Renewable energy generator command for receiving a command for an adjustment command value, calculating the adjustment command value for the storage batteries installed separately at the site, and commanding the storage battery so that the total becomes the adjustment command value for which the command was received. having a controller and
The renewable energy generator command controller,
A controllable power supplyable amount calculation unit for calculating the controllable power supplyable amount for each site based on the renewable energy power generation value of the site, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery. and,
Adjusting power for calculating a priority of the adjustability provisionable amount for each site from at least one numerical value of the renewable energy power generation value, the charge/discharge value of the storage battery for mitigating fluctuations in renewable energy power generation, and the charging rate of the storage battery an available amount priority calculation unit;
a control force allocation calculation unit that calculates the adjustment command value for each of the sites from the adjustment command value based on the calculation result of the control force available amount priority calculation unit ;
In the case of calculating the priority from the numerical value, the controllable power available amount priority calculation unit receives a target charging rate of a storage battery at an arbitrary site, and the charging rate of the storage battery at the arbitrary site is calculated according to the target charging If it is less than the rate, the site is given a higher priority in providing downward transaction adjustment power, and if it is greater than the target charging rate, the site is given a higher priority in providing upward transaction adjustment power.
A storage battery combined renewable energy generator system characterized by:

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