JP2007151371A - System cooperation-type variation suppressing system and output variation suppression method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the output variation of un-controlling type power generation equipment represented by wind force and solar power generation, without causing large additional investment and deterioration of the operating ratio. <P>SOLUTION: An absorption requiring output variation calculating part 31A calculates the output variation which should be absorbed in un-controlling type power generation equipment from power generation output values of non-controlling type power generation equipment 2<SB>1</SB>to 2<SB>m</SB>, weather information and system constraint value from a system entrepreneur 6. A variation absorbable amount calculating part 32A calculates the variation absorption amount which each equipment arranged in respective consumers 1<SB>1</SB>to 1<SB>n</SB>that are the absorption destinations of output variation for calculated output variation which is to be absorbed by using equipment information on the operation of equipment. A variation allocation part 34A transmits the calculated output variation that are to be absorbed, to the respective consumers 1<SB>1</SB>to 1<SB>n</SB>. Equipment output adjusting parts 21 of the respective consumers 1<SB>1</SB>to 1<SB>n</SB>adjust the outputs of each equipment arranged at the consumers, by adjusting them to transmitted in matching with the output variation that is to be absorbed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a plurality of demands comprising at least one of a plurality of non-control power generation facilities and an electric heat storage facility or power storage facility or a combined heat and power generation facility having output control and means for accumulating exhaust heat. The present invention relates to a system coordination type fluctuation suppression system having a house.

  As a measure against global warming, power generation facilities using natural energy that does not use fossil fuels are in the spotlight. Among them, wind power generation facilities and solar power generation facilities are technically highly complete, and future expansion is expected.

  The power generation facility converts natural energy, such as wind power and sunlight, into electric power. In the power generation facility, the power generation output fluctuates in accordance with fluctuations in input natural energy such as wind and sunlight, but it is difficult to artificially control the output constant without reducing efficiency. Applicable power generation facilities include power generation using wind power and tidal power in addition to wind power and sunlight. Hereinafter, such a power generation facility is referred to as a “non-controlled power generation facility”.

Output fluctuations of uncontrolled power generation facilities need to be absorbed in some way from the viewpoint of the balance between power supply and demand and the stability of the power system, but until now it has been installed in the inertia of the power system and in the power system. It has been dealt with by adjusting the output of the power generation equipment for adjustment.
11th New Energy Subcommittee, Comprehensive Resource and Energy Survey Material 5-2 Sub-committee Report on Wind Power System Interconnection Measure Subcommittee: Review Results of Measures Included in July 27, 2004 Interim Report 33 others

  Due to the increase in power generation facilities due to natural energy, the ratio of the output of uncontrolled power generation facilities to the power handled by the power system has increased, and it is approaching a state where the output fluctuation cannot be absorbed. If the amount of fluctuation in power generation output by the non-control power generation facility exceeds the adjustment capability by the adjustment power generation facility, it will be difficult to maintain the frequency in the power system, and normal power system operation will be impossible. Especially at night, the capacity of the power generation equipment for adjustment that operates is small due to supply and demand, and it is becoming difficult to introduce power generation equipment that uses further natural energy as a driving force.

  In order to further introduce non-controlled power generation facilities while suppressing the impact on the power system, the non-controlled power generation facilities can be disconnected or the A method has been proposed in which a power storage facility is provided in the immediate vicinity of a power generation facility to level out fluctuations in output.

  However, in the method using the disconnection, the power generation facility operation rate decreases accordingly. Moreover, the output fluctuation mitigation method using power storage equipment requires additional capital investment in the power storage equipment, and in particular to absorb long-period fluctuations of 30 minutes or more, the ability close to the rated output of uncontrolled power generation equipment Therefore, the burden of additional investment and replacement costs when the storage battery deteriorates becomes extremely large. As described above, both methods have a problem that the power generation cost is significantly increased and the investment recovery is difficult, which substantially hinders the introduction of new uncontrolled power generation facilities.

  The object of the present invention was made to solve the above-mentioned problems, and output fluctuations of non-control power generation facilities represented by wind power and solar power generation without causing significant additional investment or reduction in operating rate. It is intended to provide a system-coordinated fluctuation suppression system and an output fluctuation suppression method that alleviate the problem and prevent further adverse effects on the power system, while further promoting the introduction of the power generation equipment.

  In order to achieve this object, the system-coordinated fluctuation suppression system of the present invention is based on the power generation output value of the non-control power generation facility, the weather information, and the system constraint value from the system operator. Absorption required output fluctuation amount calculation means for calculating the output fluctuation amount to be absorbed, and each facility installed at each consumer that absorbs the output fluctuation with respect to the calculated output fluctuation amount to be absorbed. A variable absorbable amount calculating means for calculating a possible variable absorbable amount using facility information relating to the operation of the facility; a calculated variable amount assigning means for transmitting the calculated output fluctuation amount to be absorbed to each consumer; It has equipment output adjusting means for adjusting the output of each equipment installed in the consumer in accordance with the transmitted output fluctuation to be absorbed.

  Here, in absorbing fluctuations in the output of uncontrolled power generation facilities, the concept of system stabilization by the power plant for adjustment is not to adjust fluctuations directly with the amount of power generated in the grid, but mainly to demand. In order to offset fluctuations in power generation output of uncontrolled power generation facilities by using the remaining capacity of electrical heat storage facilities, combined heat and power generation power generation facilities or power storage facilities, which are often installed in homes, It is different in that it contributes to system stabilization by changing the power demand of the equipment that is often installed in the plant.

  In addition, the time required for the facility capacity is that the electric heat storage facility, the combined heat and power generation facility, or the power storage facility has an energy storage function, so that the required amount of heat storage or storage at a predetermined time before demand occurs is satisfied. Thus, even if the output of the heat source machine or the like is changed instantaneously, it does not affect the consumer, that is, it means that there is a surplus power when viewed instantaneously.

  According to the embodiment of the present invention, the system-coordinated fluctuation suppression system has means for reporting whether or not cooperation in absorbing output fluctuations is possible, and if possible, the amount of fluctuations that can be absorbed and / or the cooperation possible time zone. When the customer who is the absorption destination declares the cooperation possible amount or the like in advance, the facility stoppage due to failure or maintenance, the change of the cooperation possible amount, etc. can be reflected in the allocation, and more accurate control becomes possible.

  According to the embodiment of the present invention, the variable absorbable amount calculating means further obtains the degree of cooperation with respect to the output fluctuation absorption of the consumer and / or tolerance information against the output fluctuation of each facility installed in the consumer. It is used to calculate the amount of output fluctuation that should be absorbed by the equipment installed at each consumer. In calculating the amount of fluctuation absorption, it is necessary to take into account fluctuation tolerance information such as the amount and frequency of contribution to the past output fluctuation absorption of each customer accumulated in the database, and the fluctuation tolerance information such as the repeated life of each equipment. The variable absorption burden can be assigned so as not to overlap.

  According to the embodiment of the present invention, the required absorption output fluctuation amount calculation means uses the power generation output value based on the prediction as the power generation output value of the non-control power generation facility. By setting the output fluctuation of the non-control power generation facility that is the subject of fluctuation absorption as the output based on the power generation prediction, it is possible to set the necessary absorption amount for each time zone in advance. As a result, it becomes easier to calculate the time-capacity surplus capacity on the side that absorbs fluctuations, and the safety margin for securing the required heat storage amount or the required power storage amount, that is, the operating surplus capacity can be allocated to fluctuation absorption. The amount of fluctuation absorption can be increased.

  According to the embodiment of the present invention, the system-coordinated fluctuation suppression system is a heat storage amount at a predetermined time determined in consideration of the time required for calculating the output fluctuation absorption amount of the equipment installed in each consumer. Or means for calculating the amount of electricity stored, means for predicting the amount of heat demand or power demand to be covered by the equipment, and the amount of heat storage or electricity storage at the predetermined time and the predicted amount of heat demand or power demand. A means for calculating a target heat storage amount or a target power storage amount at a predetermined target time; and a means for calculating a possible fluctuation absorption while satisfying the target heat storage amount or the target power storage amount. In calculating the variable absorbable amount, it is possible to more accurately calculate the required heat storage amount or power storage amount at the target time by grasping the heat storage amount or power storage amount and predicting the heat or power demand in the consumer. This makes it possible to calculate the output fluctuation range and output change rate of the equipment subject to fluctuation absorption more accurately, and the time that these can be connected, so by combining these, you can achieve absorption characteristics that match the required amount of absorption. In addition, an accurate and large amount of fluctuation absorption can be secured, and the amount of output fluctuation that can be absorbed can be increased as viewed in the entire system.

  According to the embodiment of the present invention, the system-coordinated fluctuation suppression system relates to the prediction of the power generation output or the demand prediction of heat or power, and collates the deviation between the prediction and the actual results at every predetermined time, and Means for re-predicting when the amount transition exceeds a predetermined reference value or when the explanatory variable used for the prediction changes beyond a predetermined reference value, And means for reassigning the equipment installed in the house. Compare the predicted value of the power generation output or the predicted value of demand for heat or electricity in the customer with the actual measurement value, and correct the prediction based on the deviation, or change beyond the provisions with the forecast value used for the prediction, etc. In this case, the prediction accuracy can be improved by correcting the prediction. By reallocating the fluctuation absorption amount based on the corrected prediction, the fluctuation suppression effect can be improved.

  According to an embodiment of the present invention, the uncontrolled power generation facility is a wind power generation facility. In this case, it is possible to expect a decrease in the minute fluctuation component due to the effect of superposition, by absorbing the output fluctuation more efficiently, by obtaining the necessary absorption amount in batches, compared with the case where absorption is performed for each unit. Is possible.

  According to the embodiment of the present invention, the uncontrolled power generation facility is a solar power generation facility. In this case, since the power generation equipment is often installed near the consumer, the fluctuation can be absorbed relatively recently, and the effect of reducing the influence on the system becomes higher.

  According to the embodiment of the present invention, the electric heat storage facility is an electric heat source facility for hot water supply or an electric heat source facility for air conditioning. Many of these perform heat storage mainly at night. Generally, it is sufficient that the heat storage is completed by the morning, and there is little trouble even if the output is changed midway. It can absorb fluctuations effectively at small nights.

  According to the embodiment of the present invention, the combined heat and power generation facility is constituted by an engine type power generation facility or a fuel cell type power generation facility and a heat storage material or a heat storage facility. By using an engine-type power generation facility or a fuel cell-type power generation facility as a combined heat and power generation facility, and adjusting the power generation output in consideration of the number of operating units and the characteristics of the equipment so as to absorb the specified fluctuation as the total of multiple units, Fluctuation absorption can be performed without impairing the energy efficiency of the facility.

  According to the present invention, output fluctuations of non-control power generation facilities represented by wind power and solar power generation can be measured with respect to temporal changes of electric heat storage facilities and power storage facilities installed in consumers and controllable combined heat and power generation facilities. By absorbing the remaining capacity, it is possible to prevent adverse effects on the power system without making a new additional investment. Thereby, further introduction of non-control type power generation equipment can be promoted without lowering the efficiency of the non-control type power generation equipment.

  Next, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 shows the configuration of a system coordination type fluctuation suppression system according to the first embodiment of the present invention.

System cooperation type variation suppression system of the present embodiment a plurality of customer 1 _1, 1 _2, ..., 1 _n and a plurality of non-controlled power plant 2 _1, 2 _2, ..., is composed of a 2 _m control center 3 ing.

And a customer 1 ₁ generally power load 11 and the power storage equipment 13 and cogeneration power generating facility 14, customer 1 ₂ The general power load 11 and electric thermal storage facility 12 includes a storage equipment 13, customer 1 ₃ has a general power load 11 and cogeneration power generating facility 14, customer 1 ₄ is provided with a normal power load 11 and the power storage equipment 13,..., customer 1 _n general power load 11 and electric thermal storage facility 12 These are connected to the non-control type power generation equipment 2 ₁ to 2 _m by the electric power system 4. In addition, the control center 3, each of the consumers 1 ₁ to 1 _n and the non-controlled power generation facilities 2 ₁ to 2 _m are connected to each other by a communication line 5. Here, the general power load 11 refers to a power load facility other than the electric heat storage facility 12.

FIG. 2 shows the configuration of the control center 3 and the consumers 1 ₁ to 1 _n . The control center 3 has a required absorption output fluctuation amount calculation unit 31A, a variable absorption possible amount calculation unit 32A, a registered facility information database 33A, and a variation amount allocation unit 34A, and each of the consumers 1 ₁ to 1 _n adjusts and outputs the facility output. A discharge amount adjusting unit 21 is provided.

Main absorbent output change amount calculation unit 31A and the non-controlled power plant 2 ₁ to 2 power output value of _m (the current value, hours and minutes of the recent past history, age and history of seasonal units), weather information (weather In general conditions, wind speed, temperature or temperature distribution, etc., forecast values, current values and past values (for example, values one hour ago)) as explanatory variables, for example, predicted values of power generation output (by time) by multiple regression method Transition) and the system constraint value from the system operator 6 are compared, and, for example, a deviation from the system constraint value is determined as an absorption output fluctuation required. Here, the “system constraint value” refers to the output fluctuation range and output change rate of the generator allowed in the connection destination system. For example, in the case of wind power generation, fluctuations in the output of power generation cause disturbances in the voltage and frequency of the connected system. The degree of this disturbance is not only the output fluctuation range, but also the design capacity of the system, the handling capacity by day and time, the adjustment capacity of the coordinating power station that manages the system, or the time to the coordinating power station. It varies depending on the distance and the distance to the connection point with other systems. In this way, the system constraint value is not fixed, but changes depending on the operating conditions of the system at the date and time.

The variable absorbable amount calculation unit 32A is an electric heat storage installed in the consumers 1 ₁ to 1 _n that is the absorption destination of the change with respect to the required absorption output variation obtained by the required absorption output variation calculation unit 31A. Registration information of the registered facility information database 33A regarding the facility 12, the storage facility 13, or the combined heat and power generation facility 14, such as the facility information such as the allowable output fluctuation range per unit time, maximum rating, minimum operable output, and partial load efficiency characteristics As a constraint, the optimization problem is solved using, for example, a tab search or a genetic algorithm, and the amount of fluctuation for each time that each facility should absorb is obtained. As the evaluation function at this time, for example, the minimum cost or the minimum energy consumption is selected according to the operation purpose of the system. There is also a method of absorbing the output fluctuation in a follow-up manner based on the history of the power generation output fluctuation, for example, by matching up within one hour. Depending on the system conditions, it may be assumed that such follow-up absorption is acceptable. In this case, it is not essential to predict the power generation output.

The fluctuation amount assigning unit 34A transmits the fluctuation amount (assigned value) obtained by the fluctuation absorbable amount calculating unit 32A to each of the consumers 1 ₁ to 1 _n . For example, in the case of the electric heat storage facility 12, the facility output adjustment / charge / discharge amount adjustment unit 21 provided in each of the consumers 1 ₁ to 1 _n adjusts the output of the heat source unit and matches the power consumption to the assigned value. In the case of the power storage facility 13, the charging or discharging power is adjusted to match the assigned value. Furthermore, in the case of the combined heat and power generation facility 14, the power generation output is changed, and adjustment is performed so that the fluctuation of the total power consumption with the installed general power load 11 matches the allocated value.

  In the above allocation, the characteristics of the facility are listed as a constraint condition, but there is no limitation to this. For example, information such as the fuel or power season and the charge for each time zone or maximum received power is added to the constraint condition. Also good. Further, the evaluation function may be assigned so that the cost is minimized or the amount of energy used is minimized not in individual consumer units but in the entire system emphasis type fluctuation suppressing system of the present invention.

Here, the concept of allocating the variable absorption amount to each consumer will be described with reference to FIG. First, the output allowable range obtained from each customer or registered in advance (the hatched portion in FIG. 3 (1)) is divided for each unit time to obtain a unit output block (FIG. 3 (2)). The “unit output block” is a unit output that can be used for a combination of outputs for each predetermined time unit, and is assembled for each block time unit so as to meet the required fluctuation absorption amount obtained in advance. For example, in a predetermined time unit t ₀₁ (between times t ₀ and t ₁ ), the amount of output fluctuation that can be contributed is the demand for two A ₀₁ for consumer and two for B ₀₁ for consumer B. House C is for 3 C _01s . The control center 3 calculates the total output value that must be satisfied by the time unit t ₀₁ by combining the seven blocks. Repeating such processing, as shown in FIG. 3 (3), (in the example of FIG. 3, from time t ₀ to t ₄₎ required time period creating a pattern for the fluctuation absorber of the results demand Allocate to houses A, B, and C (FIG. 3 (4)). In FIG. 3 (4), the thick line is the output curve of each customer A, B, C.

  There are several ways of combining unit output blocks to create a pattern for fluctuation absorption. For example, the target such as “minimum cost” and “minimum energy consumption” is set, and the characteristics of each customer, for example, This is obtained by solving an optimization problem in consideration of constraints such as whether or not output fluctuations may be repeated. For example, in the example of FIG. 3, the change in the output of the customer A that is not suitable for the output fluctuation is small, and conversely, the allowable output range is wide and the output of the customer C that is resistant to repeated output changes is large. The result is changing.

  In addition, instead of the allowable output range, the allowable output change rate obtained from each customer or registered in advance is divided for each unit time to obtain the unit output change rate, and these are obtained in advance for each block time unit. It may be assembled to meet a certain amount of fluctuation absorption. The “unit output change rate” is a unit change rate that can be used for a combination of outputs by predetermined time units.

[Second Embodiment]
FIG. 4 shows the configuration of the control center 3 and the customers 1 ₁ to 1 _n in the second embodiment of the present invention. In the present embodiment, each customer 1 ₁ to 1 _n further has a reporting unit 22, and the control center 3 includes a variable absorbable amount calculating unit 32B instead of the variable absorbable amount calculating unit 32A in FIG. . At each customer 1 ₁ to 1 _n , the pre-registered allowable value of the equipment, etc., due to the maintenance and breakdown of the equipment, and the influence of the event (the heat and electricity load changes significantly due to the event) May change. In order to reflect this in the allocated value, prior to the calculation of the variable absorbable amount by the variable absorbable amount calculating unit 32B, the reporting unit 22 determines whether cooperation for variable absorption is possible, the possible amount of cooperation for variable absorption, and possible cooperation A time zone or the like is reported to the control center 3 in advance as reporting information. The variable absorbable amount calculating unit 32B of the control center 3 calculates the variable absorbable amount for each time zone assigned to the facilities of each of the consumers 1 ₁ to 1 _n in addition to the report information in the constraint condition described in the first embodiment. To do.

[Third Embodiment]
FIG. 5 shows the configuration of the control center 3 and the consumers 1 ₁ to 1 _n in the third embodiment of the present invention. In this embodiment, in addition to the constraints described in the first and second embodiments in the registered facility information / contribution database 33B, the contribution amount (KW) of each consumer 1 ₁ to 1 _{n to} the past fluctuation absorption. -The fluctuation tolerance information such as H), the number of times, and the repetition life against the fluctuation of each facility is registered. The variable absorbable amount calculation unit 32C uses the information registered in the registered facility information / contribution database 33B as a constraint, and uses, for example, a tab search or a genetic algorithm to optimize the information as in the second embodiment. Solve the problem, and find the amount of fluctuation by time that each facility should absorb. The fluctuation amount assigning unit 34B transmits the fluctuation amount (assigned value) obtained by the variable absorbable amount calculating unit 32C to each of the consumers 1 ₁ to 1 _n and registers the facility absorption / registration as the history of the assigned fluctuation absorbing amount. This is stored in the database 33B.

In the present embodiment, consideration is given to fluctuation tolerance information such as the past contribution amount and frequency of the consumers 1 ₁ to 1 _n and the repetitive life of each equipment, for example, even if there is room for adjustment in the equipment. Excessive fluctuations in specific equipment, taking into account the characteristics of each equipment, such as equipment deterioration when frequent deep charging / discharging is frequently applied, and deterioration of heat source equipment and heat storage equipment due to heat cycle accompanying output change This is to prevent the absorption burden from overlapping.

[Fourth Embodiment]
FIG. 6 is a configuration diagram of the control center 3 and the consumers 1 ₁ to 1 _n according to the fourth embodiment of the present invention. In the present embodiment, the control center 3 further includes a power generation amount prediction unit 35 in the control center 3 in the third embodiment, and instead of the absorption output fluctuation amount calculation unit 31A, an absorption output fluctuation amount calculation unit 31B. have. Power generation amount prediction unit 35 and the output of the non-controlled power plant 2 ₁ to 2 _m, and stored in the database 35A, weather, wind speed and wind direction and / or weather information of solar radiation, etc., a history of power output explanatory variables As described above, the predicted power generation output is calculated by a neural network method, a multiple regression method, or the like. Note that the optimum explanatory variable may vary depending not only on the type of the equipment but also on the installation position. Therefore, not only the above example but also other appropriate explanatory variables are used. The required absorption output fluctuation amount calculation unit 31B calculates the power generation output fluctuation amount to be absorbed from the predicted power generation output value and the system constraint value from the system operator 6 in the same manner as in the first to third embodiments. Others are the same as the third embodiment.

[Fifth Embodiment]
FIG. 7 shows the configuration of the control center 3 and the consumers 1 ₁ to 1 _n in the fifth embodiment of the present invention. The configuration of the control center 3 is the same as the configuration of the control center 3 in the fourth embodiment. In addition to the equipment output amount adjustment / charge / discharge amount adjustment unit 21 and the reporting unit 22, the customers 1 ₁ to 1 _n , the database 23, the current heat storage / storage amount calculation unit 24, the heat / power demand prediction unit 25, and the target storage energy storage An amount calculation unit 26 and a cooperable amount calculation unit 27 are included.

The current heat storage / storage amount calculation unit 24 is necessary for processing such as various calculations, demand prediction calculation or allocation from a predetermined time determined in consideration of the time required for calculation of fluctuation absorption allocation, that is, the scheduled allocation time. The amount of heat stored and the amount of electricity stored at a predetermined time considering the accuracy of the prediction and the accuracy of the prediction (how many hours the amount of electricity will be included in the prediction, etc.) To calculate). Note that the time may be changed within a range that does not interfere with the processing, and the time itself may be an optimization target (calculates and changes when to obtain a good result). If there is no problem in accuracy, the time may be fixed in advance. Thermal and power demand prediction unit 25, past demand database 23, the information such as air temperature, predicts the customer 1 ₁ to 1 _n of the heat or power demand of the said time. The target power storage heat amount calculation unit 26 calculates the necessary heat storage amount or the power storage amount at the predetermined time from the current heat storage amount, the current power storage amount, and the demand prediction result. Based on this, the cooperation possible amount calculation unit 27 calculates the output fluctuation range and output change rate in which each facility can cooperate, and the cooperation possible time, and reports it to the control center 3 via the reporting unit 22. Here, for example, when using a liquid such as water as the heat storage medium, the current heat storage amount is measured at a predetermined liquid level, and when using a building enclosure as the heat storage medium, the temperature of a predetermined part is measured. Can be obtained. Further, the current power storage amount can be obtained from an integrated value of past charge / discharge currents. In addition, the demand forecast for power and heat is, for example, a demand history for the past 30 days, a parameter indicating a difference between weekdays and holidays, a weather forecast for a forecast time zone, a forecast value for temperature and humidity, or these history as explanatory variables. Obtained by multiple regression method or neural network method. Note that the above explanatory variables are only examples, and optimum variables differ depending on the difference in equipment configuration and the object to be predicted, for example, heat for air conditioning or heat for hot water supply. . Further, in FIG. 7, from the calculation of the current heat storage amount or the current power storage amount, the demand prediction of heat or electric power, the calculation of the necessary heat storage amount or the power storage amount at the target time, and each amount of the output fluctuation range that can be cooperated based on these However, some or all of these functions may be executed in the control center 3. In this case, the data required for the calculation may be reported to the control center 3 instead of reporting the cooperable variation amount.

[Sixth Embodiment]
FIG. 8 is a flowchart of processing related to correction of prediction and reassignment of variable absorption amount in the variable absorption amount calculation unit 32C according to the sixth embodiment of this invention.

  The predicted value of power generation output or the predicted value of demand for heat or power in the customer is compared with the actual measurement value to determine the amount of deviation or the amount of deviation, and when that value exceeds a predetermined reference value, When an explanatory variable used for the prediction, for example, a forecast value such as weather forecast, temperature, humidity, wind direction, wind speed, etc. is changed beyond a predetermined reference value, the forecast is performed again (steps 101-103). Based on the new predicted value, the variable absorption is reassigned as necessary (step 104). The control flow throughout the entire system is the same as that of FIG. 7 shown in the fifth embodiment. However, the prediction result is verified every predetermined time, re-predicted when necessary, and based on the result. The difference is that a function for performing reassignment is added to the fifth embodiment. Further, the system configuration in this embodiment may be the same as that shown in FIG. 2 in the first embodiment.

[Seventh Embodiment]
FIG. 9 is a configuration diagram of a system coordination type fluctuation suppression system according to the seventh embodiment of the present invention. In the present embodiment uses a wind power generation equipment or solar power equipment as a non-controlled power plant 2 ₁ to 2 _m. In the case of wind power generation facilities, fluctuation absorption control is mainly performed at night when the capacity of the regulated power plant is reduced, and fluctuation absorption by a night heat storage type facility is mainly performed. In the case of solar power generation, since daytime control is performed, adjustment by a power storage facility or a combined heat and power generation facility that increases the daytime operation rate is likely to be mainly performed. The control flow may be any of FIGS. 2 to 8 shown in the first to sixth embodiments described above.

[Eighth Embodiment]
FIG. 10 is a configuration diagram of a system coordination type fluctuation suppression system according to the eighth embodiment of the present invention. In the present embodiment, as the electrical heat storage facility 12, an electrical heat source facility for hot water supply and an electrical heat source facility for air conditioning are used. Specific examples of the electric heat source equipment for hot water supply include a so-called electric water heater or heat pump water heater using an electric heater as a heat source. Specific examples of air-conditioning heat source equipment include cooling storage or heating equipment consisting of a heat storage tank such as an ice heat storage tank or a cold / hot water tank and an electric refrigerator or heat pump that supplies heat or cold to the heat storage tank, and a heat storage material. The heat storage type electric heating appliance combined with the electric heater, the heat storage type electric floor heating, and the electric cooling or heating facility for supplying the building body with heat or cold as a heat storage medium are also referred to in this embodiment. This corresponds to the air conditioning heat source facility of the facility 12.

  Among the above examples, a heat source machine using an electric heater is particularly suitable for control with few restrictions such as on / off and output adjustment range.

  The control flow may be any of FIG. 2 and FIG. 4 to FIG. 8 shown in the first to sixth embodiments described above.

[Ninth Embodiment]
FIG. 11 is a configuration diagram of a system coordination type fluctuation suppression system according to the ninth embodiment of the present invention. In the present embodiment, an engine type power generation facility or a fuel cell type power generation facility is used as the combined heat and power generation facility 14 capable of output control.

  In the present embodiment, based on the assignment result of the output fluctuation to be absorbed, the power generation output is changed in consideration of the fluctuation of the general load 11, and an apparent load fluctuation corresponding to the assigned absorption amount is generated. In addition, although the power consumption of the general load 11 connected to the combined heat and power generation facility 14 is smaller than the power generation output and a surplus is discharged to the power system, a so-called reverse power flow situation is assumed. If there is no problem in discussion with the person in charge, power may be supplied to the grid. If the reverse power flow is not permitted, the allocation amount is calculated by including the condition in the constraint condition.

  Engine-type power generation equipment can be started and stopped frequently, but its efficiency at the time of partial load is low. Therefore, the output is adjusted as a whole by changing the number of units in operation near the rated output. In addition, in the case of fuel cell type power generation equipment, since it is not suitable for frequent start / stop, the adjustment of the power generation output for each unit is mainly used, and in addition, the number of operating units is set with a certain number of start and stop restrictions. The power generation output is adjusted as a whole.

  The control flow may be any of FIG. 2 and FIG. 4 to FIG. 8 shown in the first to sixth embodiments described above.

It is a figure which shows the structure of the system | strain cooperation type | mold fluctuation suppression system by the 1st Embodiment of this invention. It is a figure which shows the structure of the control center and customer in the system | strain cooperation type | mold fluctuation suppression system by the 2nd Embodiment of this invention. It is a figure explaining the concept of allocation to each consumer of fluctuation absorption. It is a figure which shows the structure of the control center and customer in the system | strain cooperation type | mold fluctuation suppression system by the 3rd Embodiment of this invention. It is a figure which shows the structure of the control center and customer in the system | strain cooperation type | mold fluctuation suppression system by the 4th Embodiment of this invention. It is a figure which shows the structure of the control center and customer in the system | strain cooperation type | mold fluctuation suppression system by the 5th Embodiment of this invention. It is a figure which shows the structure of the control center and customer in the system | strain cooperation type | mold fluctuation suppression system by the 6th Embodiment of this invention. It is a flowchart of the process regarding correction of the prediction of the variable absorption amount calculation part 32C in the 7th Embodiment of this invention, and reassignment of a variable absorption amount. It is a figure which shows the structure of the system | strain cooperation type | mold fluctuation suppression system by the 8th Embodiment of this invention. It is a figure which shows the structure of the system | strain cooperation type | mold fluctuation suppression system by the 9th Embodiment of this invention. It is a figure which shows the structure of the system | strain cooperation type | mold fluctuation suppression system by the 10th Embodiment of this invention.

Explanation of symbols

1 ₁ to 1 _n consumers 2 ₁ to 2 _m Non-controlled power generation equipment 3 Control center 4 Power system 5 Communication line 6 System operator 11 General power load 12 Electric heat storage equipment 13 Power storage equipment 14 Combined heat and power generation equipment 21 Equipment Output amount adjustment / charge / discharge amount adjustment unit 22 Declaration unit 23 Database 24 Current heat storage / power storage amount calculation unit 25 Heat / power demand prediction unit 26 Target power storage heat storage amount calculation unit 27 Cooperation possible amount calculation unit 31A, 31B Absorption required output fluctuation amount Calculation unit 32A, 32B, 32C Fluctuation absorbable amount calculation unit 33A, 33B Database 34A, 34B Fluctuation amount allocation unit 35 Power generation output prediction unit 35A Database 35B Power generation output prediction unit 101-104 steps

Claims (10)

A plurality of at least one of a plurality of non-control type power generation facilities that receive natural energy and an electric heat storage facility, a power storage facility, and a combined heat and power generation facility that can control output and store exhaust heat In the system-coordinated fluctuation suppression system with
Absorption required output fluctuation amount calculation means for calculating the output fluctuation amount to be absorbed of the non-control type power generation equipment from the power generation output value of the non-control type power generation equipment, weather information, and the system constraint value from the grid operator When,
For the calculated output fluctuation amount to be absorbed, the fluctuation absorption amount that can be absorbed by each equipment installed in each customer, which is the absorption destination of the output fluctuation, is used for the equipment information regarding the operation of the equipment. A variable absorbable amount calculating means for calculating
A fluctuation amount allocating means for transmitting the calculated output fluctuation to be absorbed to each consumer;
A system-coordinated fluctuation suppression system comprising: facility output adjusting means for adjusting the output of each facility installed in the consumer in accordance with the transmitted output fluctuation to be absorbed.   The system cooperation type | mold fluctuation | variation suppression system of Claim 1 which has a means to declare each said consumer whether the cooperation to output fluctuation absorption is possible, the fluctuation amount which can be absorbed, and / or the cooperation possible time slot | zone.   The fluctuation-absorbable amount calculating means further uses the degree of cooperation with respect to absorption of past output fluctuations of the consumer and / or tolerance information against output fluctuations of the facilities installed in the consumer, to each of the consumers. The system coordination type | mold fluctuation suppression system of Claim 2 which calculates the output fluctuation part which the installation installed in should be absorbed.   4. The system-coordinated fluctuation suppression system according to claim 1, wherein the absorption output fluctuation amount calculation unit uses a power generation output value based on prediction as a power generation output value of the non-control power generation facility. .   Means for calculating a heat storage amount or a storage amount at a predetermined time determined in consideration of a time required for calculating an output fluctuation absorption amount of the equipment installed in each consumer; and a heat demand to be covered by the equipment Means for predicting the amount or power demand amount, and means for calculating the target heat storage amount or target power storage amount at a predetermined target time from the heat storage amount or power storage amount at the predetermined time and the predicted heat demand amount or power demand amount The system coordination type | mold fluctuation suppression system in any one of Claim 1 to 4 which has a means to calculate the fluctuation | variation absorption possible while satisfy | filling the said target thermal storage amount or the target electrical storage amount.   Regarding the prediction of power generation output or the demand prediction of heat or electric power, the deviation between the prediction and the actual result is collated at a predetermined time, and the deviation amount or the transition of the deviation amount exceeds a predetermined reference value or is used for the prediction. Means for re-predicting when the explanatory variable has changed beyond a predetermined reference value, and means for re-allocating the variable absorption amount to the equipment installed in each consumer based on the re-prediction. The system coordination type | mold fluctuation suppression system of 4 or 5.   The system cooperation type | mold fluctuation suppression system in any one of Claims 1-6 whose said non-control type | mold power generation equipment is a wind power generation equipment or a solar power generation equipment.   The system cooperation type | mold fluctuation suppression system in any one of Claims 1-7 whose said electrical heat storage equipment is the electrical heat source equipment for hot-water supply, or the electrical heat source equipment for an air conditioning.   The system cooperation type | mold fluctuation suppression system in any one of Claims 1-8 by which the said combined heat and power generation equipment is comprised with an engine type power generation equipment or a fuel cell type power generation equipment, and a thermal storage material or a thermal storage equipment. A plurality of at least one of a plurality of non-control type power generation facilities that receive natural energy and an electric heat storage facility, a power storage facility, and a combined heat and power generation facility that can control output and store exhaust heat An output fluctuation suppression method in a system coordination fluctuation suppression system having a customer of
Calculating the power fluctuation output to be absorbed of the non-control power generation facility from the power generation output value of the non-control power generation facility, meteorological information, and the system constraint value from the grid operator;
For the calculated output fluctuation amount to be absorbed, the fluctuation absorption amount that can be absorbed by each equipment installed in each customer, which is the absorption destination of the output fluctuation, is used for the equipment information regarding the operation of the equipment. Calculating step,
Transmitting the calculated output fluctuation to be absorbed to each consumer;
Adjusting the output of each facility installed in the customer according to the output fluctuation to be absorbed that has been transmitted. The output fluctuation suppression method in the system coordination fluctuation suppression system.

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