JP2006280020A - Integrated power turbine generator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a planned generation output at each time zone cannot be obtained by wind turbine generation since the output depends of a wind and is not stabilized, and if this unfavorable situation continues, power generated by the wind turbine generation cannot be traded at a power exchange. <P>SOLUTION: This integrated wind turbine generation system 100 comprises: a generation amount storage means that stores the generation amount of a wind turbine generator in the past; a generation amount acquisition means that acquires the present generation amount; a supply amount prediction means that predicts suppliable power from a generation result in the past; a bidding means that bids in power at the power exchange 14 on the basis of a supply amount prediction value, and acquires an agreed power amount agreed at the power exchange 14; a charge/discharge control means that charges power generated by the wind turbine generator of a wind firm 18, and discharges the power when the power is insufficient; and a wind turbine generation integration means that acquires and sums generation amounts of a plurality of the wind turbine generators from the generation amount acquisition means in order to feed the power amount agreed by the bidding means, and makes the charge/discharge control means charge and discharge excess power or insufficient power to and from an accumulator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power control system, and more particularly, to a general wind power generation system that controls a plurality of wind power generation devices so that the power generated by the wind power generation system can be generated at a power exchange.

  With wind power generation, the kinetic energy of wind is converted into motive energy of rotation by a windmill or propeller, and the rotation is increased by a speed increaser or the like, and the generator is moved to change into electric energy. Enhancing electrical energy to stable power quality and connecting it to the power company system is called “system interconnection”, and flowing power to the power company system is called “reverse power flow”.

  In order to install wind power generation facilities, it is necessary to secure a wind condition suitable for wind power generation that blows from a certain direction at an annual average wind speed of 5-6 m / s or more, and roads and transmission lines for carrying construction materials. . As a general method of wind power generation, a place where a plurality of wind turbines are installed side by side in a place (site) that satisfies certain conditions with strong wind is called a wind farm.

  Further, the wind becomes stronger as it becomes higher from the ground. For example, a wind speed about 1.3 times larger than a point about 10 m above the ground can be obtained at a point about 50 m above the ground. Since wind energy is proportional to the cube of the wind speed, it is possible to obtain about 2.2 times more wind energy, and the higher the tower, the greater the output, but at the same time the construction cost increases, In determining the height of the power, the balance between output and cost must be verified.

  In recent years, propeller type windmills are used for wind power generation with rated output (maximum output) of 1500 to 2000 kW for large ones and about 200 to 600 kW for medium size ones. The size of the windmill is, for example, a medium-sized object with a tower height of about 45 m and a blade diameter of about 50 m, and is comparable to a 20-story building (about 70 m) from the ground to the tip of the blade.

  However, natural energy generated by wind power generation varies greatly depending on the season, time, and weather. It becomes larger and the grid power network becomes unstable. In order to solve such a problem, a technique for stabilizing a power network that receives supply of power generated by a natural energy power generation device as disclosed in Patent Document 1 is disclosed.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses a technique relating to a wind relation identifying device, a wind prediction device, and the like that enable wind prediction with less error, and enables accurate wind condition prediction.

  In recent years, the amount of wind power generation in Japan has also been increasing year by year. The wind power plant in Noshiro City, Akita Prefecture, shown in Non-Patent Document 1, has a utilization rate of 27.4% (Tohoku in FY2003). (Researched by a natural energy development company). Furthermore, as shown in Non-Patent Document 2, since the trading of the Japan Wholesale Power Exchange began in April 2005, it will be possible to sell free power in the future. Wind power generation with support has attracted attention.

JP 2004-72900 A Japanese Patent Laid-Open No. 2005-10082 Tohoku Natural Energy Development Co., Ltd., “Wind Power Plant”, [online], [Search February 28, 2003], Internet <URL: http://www.tohokushizen-e.co.jp/> Director Akira Kanno, Japan Wholesale Power Exchange, “Transaction Guide Ver 1.40”, [online], Japan Electric Power Exchange (JEPX), [March 16, 2003 search ] Internet <URL: http://www.jepx.org/guide.htm>

  As mentioned above, wind power plants have been built and are operating in various locations. However, wind power generation is unstable because the output is left to wind, the planned power generation output for each time zone cannot be obtained, and the power output is small compared to thermal and hydropower generation. There is a problem that it is not possible to trade wind power at a place.

  In addition, as shown in Patent Document 1, adding a secondary battery to a wind power generator increases installation costs and maintenance costs, and may cause deterioration in profitability.

  Furthermore, in order to realize power generation and charging that change every moment through grid interconnection, it is necessary to perform fine control such as determination of transmission power and switching instructions of a transmission path, but there is a problem that it is not controlled at present.

  One of the purposes is to solve the above problems. The integrated wind power generation system according to the present invention provides information such as the amount of power generated by a wind farm in which a plurality of wind power generation devices are installed in order to supply power every predetermined time, which is a product of a power exchange. And an integrated wind power generation system that controls the amount of power generated by the wind turbine generator based on the acquired information and supplies it to the power network.

  The integrated wind power generation system according to the present invention includes a power generation amount acquisition means for acquiring a condition and a power generation amount of each wind power generation device of a wind farm under one or a plurality of conditions of past weather, wind conditions, seasons, and times Power generation amount storage means for storing the conditions and power generation amount of each wind farm and each wind power generation device, and prediction of power that can be supplied every predetermined time according to past power generation results and numerical analysis results stored in the power generation amount storage means Supply amount prediction means, and a contracted amount of electricity contracted at the power exchange by bidding on a demand amount for each predetermined time presented to the power exchange based on the supply amount prediction value obtained by the supply amount prediction means Bidding means for acquiring contract amount, charging / discharging control means for controlling charging / discharging of storage battery that is charged with electric power generated by wind farm wind power generator and discharged in case of shortage, and electric energy agreed by bidding means Wind power generation control means for acquiring and totaling the power generation amounts of a plurality of wind farms from the power generation amount acquisition means to supply, and charging or discharging surplus or deficiency to the storage battery by the charge / discharge control means, To do.

  The supply amount predicting means is preferably predicted by using past power generation results, weather radar, geostationary satellite photographs, computer simulation using a weather model, or the like.

  In the integrated wind power generation system according to the present invention, the wind farm controlled by the wind power generation managing means includes a first type wind farm having a plurality of wind power generators and a second type wind farm having a storage battery in the wind farm. The charging / discharging control means causes the second-type wind farm to charge the storage battery in the wind farm with the power of the wind power generator when charging / discharging via the power network is restricted. And

  Furthermore, in the integrated wind power generation system according to the present invention, when charging with power generated by another wind farm is possible via the power network, the charge / discharge control means generates power with the wind power generator of the first type wind farm. The power equivalent is discharged to the power network, and the power equivalent is charged from the power network to the storage battery of the second type wind farm.

  Furthermore, in the integrated wind power generation system according to the present invention, when the power storage facility having the storage battery connected to the power network can be charged, the charge / discharge control means generates at least the wind power generator of the first type wind farm. The power equivalent is supplied to the power network, and the power equivalent is supplied to the power storage facility.

  Furthermore, in the integrated wind power generation system according to the present invention, the charge / discharge control means is connected to the storage battery and the power network of the second type wind farm when the electric power is more than a predetermined time as the product of the power exchange. The power storage equipment is charged.

  Furthermore, in the overall wind power generation system according to the present invention, the wind power generation management means includes charge / discharge control means for controlling surplus or deficiency by charge / discharge of the storage battery, and a plurality of wind power generators installed in each wind farm. Wind farm output control means for stopping or starting at least one of these.

  Furthermore, in the integrated wind power generation system according to the present invention, the bidding means transmits the acquired contracted power amount and the grid interconnection information of the wind power generation apparatus stored in advance to the power supply command apparatus that manages the power network. It is characterized by doing.

  Furthermore, in the integrated wind power generation system according to the present invention, the wind power generation managing unit monitors the power generation amount of the wind power generator and transmits the power generation amount to the power supply command device.

  By using the present invention, it becomes possible to manage the output of distributed wind farms in a unified manner, and it can be used as a large-capacity power generation of at least 1000 kWh or more.

  Moreover, the level farming control and planned power generation can be adjusted by a wind farm having a storage battery, and it is possible to obtain electric power (product) of quality that can be handled by the power exchange.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

  FIG. 1 is a configuration diagram showing an overall configuration of an integrated wind power generation system 100 according to an embodiment of the present invention connected to a power network 40 and a communication network 30. The power network 40 includes a power transmission system 42 including a power plant 25 and a power transmission substation 23, a power distribution system including a power distribution substation 24, an interconnection substation 22, a high voltage regulator 26, and a pole transformer 27. 44 and a power supply command device 21 for controlling them. Further, a load 15 that consumes electric power and a wind farm 18 having a plurality of wind power plants (hereinafter referred to as wind power generators in the present embodiment) are connected.

  The communication network includes the Internet and a dedicated communication line. The communication network 30 includes a power exchange 14 that handles the buying and selling of free power, a general wind power control unit 11 having a wind power DB 12, a plurality of wind farms 18, a power supply command device 21, an interconnection substation 22, A purchaser terminal 16 for purchasing power is connected.

  FIG. 2 is an explanatory diagram for explaining a configuration of the integrated wind power generation system 100 according to the first embodiment of the present invention. The integrated wind power generation system 100 includes an integrated wind power control unit 11, a first type wind farm 17, and a second type wind farm 19. The first type wind farm 17 does not include a charging facility, and supplies the generated power to the power network 40 as it is. In addition, the second type wind farm 19 includes a storage battery 13 and can supply the power network 40 with power controlled by charging and discharging surplus power.

  The power exchange 14 and the integrated wind power generation system are connected via a communication network. The overall wind power control unit 11 obtains the power generation amount of the power exchange 14 that performs power trading, the first type wind farm 17 and the second type wind farm 19, and based on the total generated power amount Bid on 14 to sell power, pay the price, and control the amount of power generated.

  FIG. 3 is a configuration diagram showing the configuration of the wind farm 18 according to the first embodiment of the present invention. Some wind farms 18 installed in places with good wind conditions suitable for wind power generation have configurations of (A) first type wind farm 17 and (B) second type wind farm 19.

  (A) The first type wind farm 17 has a plurality of wind power generators 53 (for example, 600 kW class), a boosting equipment 55, an interconnection substation 22 for grid interconnection, and a wind farm control device 51. The generated power is supplied as it is.

  (B) The second type wind farm 19 includes a plurality of wind power generators 53 (for example, 600 kW class), a boosting equipment 55, an interconnection substation 22 for grid interconnection, a wind farm control device 51, And a storage battery 13 connected to a converter 52 that performs step-up / step-down and cross flow conversion.

  The integrated wind power generation system 100 according to the first embodiment is configured to charge electric power from a plurality of wind power generators (53a, 53b, etc.) inside the second type wind farm 19 according to an instruction from the integrated wind control unit 11. The first type wind farm 17 may be charged with electric power.

  In general, the movement of air that is the source of wind power generation may not be uniform. For example, it is observed that a propeller of a wind power generation apparatus installed over several kilometers along a coast rotates nonuniformly. In such a case, the storage battery 13 is used for power adjustment, and in the present embodiment, power adjustment is possible between wind farms at completely different locations.

  FIG. 4 is a schematic diagram showing the flow of information from the integrated wind power generation system 100 according to the embodiment of the present invention. A general wind power control unit 11 having a wind power database (hereinafter abbreviated as DB) 12 is connected to a wind farm 18, a power supply command device 21, and a power exchange 14 connected to a consumer terminal 16.

  Furthermore, the wind power DB 12 has five sub-databases inside. The five sub-databases are (1) wind power prediction DB 71, (2) power sales power prediction DB 72, (3) actual power generation amount DB 73, (4) wind power generation command DB 77, and (5) wind power generation system interconnection DB 75. . Hereinafter, functions of various DBs will be described.

(1) Wind forecast DB
It is a DB that stores a power generation plan independently predicted for several weeks ahead of the power and charges handled at the power exchange based on past results, wind conditions, weather conditions, economic activities, and the like. The power generation plan uniquely predicted is used as basic information of other DBs described below.

(2) Electricity sales prediction DB
It is a DB that predicts the amount of electric power sold and the unit price of the next day, the day after next, and provides this predicted value to the wind power generation owner to secure wind power generation.

(3) Actual power generation DB
It is a DB that stores actual results such as surplus power actually collected with respect to the predicted power sales power value, unit price of charges, and power sales amount. The stored information is used not only for the settlement of power sales, but also as basic information for the power generation plan DB, and also for the calculation of the amount of wind power generation described later.

(4) Wind power generation command DB
It is a DB that stores a command value adjusted at the time of power delivery in order to achieve the sold power determined at the power exchange.

(5) Wind power system interconnection DB
It is a DB that stores the location, type, control method, rated output, grid connection information, etc. of wind power generation, and is used as information related to reverse power flow during grid connection.

  FIG. 5 is an explanatory diagram for explaining products of the power exchange connected to the overall wind power control unit 11 according to the embodiment of the present invention. A promise indicates that an order is executed and a sale is concluded, and is particularly a term in the securities industry. Even if an order is placed, such as stocks, the price does not match, and the executed item may not be executed.

  As a contract unit, one day is divided into 30 minutes and divided into 48 hours, each of which is used as a product, and 48 products are provided. The minimum amount of transaction unit time is 500 kWh, and the overall wind power control unit 11 in the present embodiment controls a plurality of wind farms 18 to ensure a power generation amount that is at least the minimum amount. Further, only necessary commodities can be bought and sold. For example, “sale from 14:00 to 14:30 and purchase from 16:00 to 16:30” can be performed.

  FIG. 6 is an explanatory diagram for explaining the electric power generated and traded by the integrated wind power generation system 100 according to the embodiment of the present invention. In this embodiment, an expected value obtained in advance by past weather records, numerical simulations using a weather model, etc. is set as the upper limit of prediction, and the safety margin (standby power generation) is set while referring to the average wind power generation for one week as the actual value. Volume) and the expected lower limit obtained by taking charge / discharge power into account is used as sales power.

  FIG. 7 is an explanatory diagram for explaining the outline of the contract processing processed at the power exchange 14 connected to the overall wind power control unit 11 according to the embodiment of the present invention. The power exchange 14 performs the contract processing after the bid acceptance deadline on the day of executing the contract processing. As shown in Fig. 7, the data bid by the participants are stacked, and the volume / price line for “sell” and the volume / price line for “buy” are created. To do.

  As shown in FIG. 7, the amount / price line extending from the lower left to the upper right is “Sell”, and the amount / price line extending from the lower right to the upper left is “Buy”. At the intersection, there are only 12 purchases versus 13 purchases. Buying is only a partial commitment. In this case, the amount of the purchase designation higher than the contract price (in this case, A purchase of 7,000 kWh at 8.50 yen / kWh / h) is determined. The remaining amount (in this case, 12 minus 7 is 5) is prorated according to the specified amount at that price. That is, the approximately fixed amount of the consumer A is 7,000 kWh / h determined by bidding at a higher price than 8.10 yen / kWh. Further, the approximately fixed amount of the consumer B is (12-7) × (6 ÷ 6) = 5,000 kWh / h.

  FIG. 8 is a flowchart showing a process flow of the overall wind power control unit 11 according to the embodiment of the present invention. First, a total value of wind power is calculated based on past weather records, simulation results, and wind power generation information (step S10) acquired from a plurality of wind farms 18, and the calculated power value is sent to the power exchange 14. A bid is made (step S12). After bidding is confirmed and power is delivered (step S14), the fee is settled and the wind power DB 12 is updated (step S16), and the process returns to the beginning. Next, the power delivery subroutine (step S14) will be described.

  The power delivery process (step S14) includes (1) a control flow in which power on the grid side does not flow into the storage battery 13 of the wind farm, and (2) the wind farm in accordance with the configuration of the overall wind power generation system 100 and the power network 40. It includes three control flows in which power between the wind farms flows in the storage battery 13, and (3) an adjustment capability enhancement type control flow in which a power storage facility is installed in the power network and an output command is issued to each wind farm and power facility. Hereinafter, each control flow will be described.

(1) Control flow in which power on the grid side does not flow into the storage battery 13 of the wind farm FIG. 9 shows the processing of the integrated wind controller 11 according to the embodiment of the present invention. It is a flowchart figure which shows the flow of control in which electric power does not flow.

  First, in step S <b> 20, the overall wind power control unit 11 transmits the generated power generation information regarding the generated power generation and the power generation time to each wind farm control device 51 as a planned output. Thereafter, the processing from step S22 to step S38 is executed at the initiative of the integrated wind power control unit 11 at fixed time intervals in accordance with the transmitted planned output.

  The overall wind power control unit 11 receives the output of each time from the first type wind farm (step S24), and receives the output of each time, charging information, discharge information, etc. from the second type wind farm (step S26). Next, the overall wind power control unit 11 sums up the outputs of the respective wind farms (step S28) to obtain a total actual output.

  Next, the planned output is compared with the obtained total actual output (step S30), and if it is determined that the “surplus” exceeds the planned output, the process of step S32 is executed. In step S32, surplus power is stored by applying the amount of power generated in the second type wind farm to charging. Further, if there is a surplus, an output down instruction (step S34) is issued to the first type wind farm, and a process of stopping or disconnecting a plurality of the plurality of units to suppress the planned output is executed repeatedly ( Step S38) Return to the process.

  If it is almost the same as the planned output, it is determined as “appropriate” and the output is instructed (step S37), and the process returns to the repetition (step S38).

  Further, if it is determined that the “insufficient” falls below the planned output, the second wind farm is instructed to discharge (step S35) to compensate for the shortage. If further shortage occurs, an output increase instruction (step S36) for starting several of the first type wind farms which are not in operation is issued (step S36), and the process returns to the repetition (step S38).

(2) Control flow in which electric power between wind farms flows in the storage battery 13 of the wind farm FIG. 10 shows the wind farm in the storage battery 13 of the second type wind farm 19 in the process of the integrated wind control unit 11 according to the embodiment of the present invention. It is a flowchart figure which shows the flow of control in which the electric power flows between.

  First, in step S <b> 40, the overall wind power control unit 11 transmits the generated power generation information regarding the generated power generation and the power generation time to each wind farm control device 51 as a planned output. Thereafter, the process from Step S42 to Step S58 is executed at the initiative of the integrated wind power control unit 11 at fixed time intervals in accordance with the transmitted planned output.

  The overall wind power control unit 11 receives the output of each time from the first type wind farm (step S44), and receives the output of each time, charging information, discharge information, etc. from the second type wind farm (step SS46). Next, the overall wind power control unit 11 sums up the outputs of the respective wind farms (step S48) to obtain a total actual output.

  Next, the planned output is compared with the obtained total actual output (step S50). If it is determined that the “surplus” exceeds the planned output, an instruction for charging the power generation amount in the second type wind farm (step S50). S52) is performed, and surplus power is stored in the storage battery 13 of the second type wind farm. If there is a surplus, the power of the first type wind farm is stored in the storage battery 13 of the second type wind farm that is not fully charged by grid connection (step S54). Thereafter, the process returns to the repetition (step S58).

  If it is almost the same as the planned output, it is determined as “appropriate” and an output maintenance instruction is given (step S57), and the process returns to the repetition (step S58).

  Further, when it is determined that “insufficient” falls below the planned output, the second wind farm is instructed to discharge (step S55) to compensate for the shortage. An output increase instruction (step S56) for increasing the discharge amount is given to the seed wind farm, and the process returns to the repetition (step S38).

  FIG. 11 is a configuration diagram showing the configuration of the wind farm according to the second embodiment of the present invention. The integrated wind power generation system 100 includes an integrated wind power control unit 11, a first type wind farm 17, a second type wind farm 19, and a power storage system 80.

  The first type wind farm 17 does not include a charging facility, and supplies the generated power to the power network 40 or to the power storage system 80 using a grid connection. In addition, the second type wind farm 19 includes a storage battery 13 and can supply the power network 40 with power controlled by charging and discharging surplus power.

  The power storage system includes a connection substation 22 that performs power step-up / step-down and AC / DC conversion for grid connection, a plurality of storage batteries 81, and a power storage control device 82 that controls these. Further, the power storage system 80 can charge nighttime power in addition to charging the surplus power of the first type wind farm 17 and charging the second type wind farm 19.

  The power exchange 14 and the integrated wind power generation system 100 are connected via a communication network 30. Similarly, the integrated wind power control unit 11 obtains the power generation amount of the power exchange 14 that performs power trading, the first type wind farm 17, the second type wind farm, and the power storage system 80, and totals the generated power. Based on the amount, the power exchange 14 is bid to sell the power, pay the price, and control the amount of generated power.

(3) Adjustment capacity-enhancing control flow in which power storage facilities are installed in the power network, and output commands are issued to each wind farm and power facility. FIG. 12 shows a storage battery in the process of the integrated wind control unit 11 according to the embodiment of the present invention. FIG. 13 is a flowchart showing a flow of an enhanced control for performing output adjustment using a wind farm with and without 13 and a power storage system.

  First, in step S <b> 60, the overall wind power control unit 11 transmits the generated power generation information related to the determined generated power and power generation time to each wind farm control device 51 as a planned output. Thereafter, processing from step S62 to step S82 is executed at the initiative of the integrated wind power control unit 11 at fixed time intervals in accordance with the transmitted planned output.

  The overall wind power control unit 11 receives the output of each time from the first type wind farm (step S64), and receives the output of each time, charge information, discharge information, etc. from the second type wind farm (step S66). Next, the overall wind power control unit 11 sums the outputs of the wind farms (step S68) to obtain a total actual output.

  Next, the planned output and the obtained total actual output are compared (step S70). If it is determined that the "surplus" exceeds the planned output, an instruction for charging the power generation amount in the second type wind farm (step S70). S72) is performed, and surplus power is stored in the storage battery 13 of the second type wind farm. If there is a surplus, the power of the first type wind farm is stored in the storage battery 13 of the second type wind farm that is not fully charged by grid connection (step S74). If there is still a surplus, an instruction to charge the power storage system through grid interconnection is issued (step S76). Thereafter, the process returns to the repetition (step S82).

  If it is almost the same as the planned output, it is determined as “appropriate” and an output maintenance instruction is given (step S80), and the process returns to the repetition (step S82).

  Further, when it is determined that the “insufficient” falls below the planned output, a discharge instruction (step S77) is given to the second type wind farm to compensate for the shortage. However, if it is still insufficient, an output increase instruction (step S78) for connecting a wind power generator not connected in reverse power flow in the first type wind farm is issued, and if it is further insufficient, a discharge instruction is issued to the power storage system 80. (Step S79), the process returns to the repetition (Step S38).

  As described above, in this embodiment, the output of the distributed wind farm can be managed in a unified manner, and can be used as a large-capacity power generation. In addition, the wind farm having the storage battery 13 makes it possible to adjust the overall leveling control and the planned power generation, so that it is possible to obtain electric power with quality that can be handled by the power exchange.

  In this embodiment, the power storage system 80 having a storage battery is used as an RPS (Renewables Portfolio Standard) power source. However, output control is relatively easy, for example, output control in combination with waste power generation or the like. A method is also suitable.

It is a block diagram which shows the whole structure of the integrated wind power generation system in embodiment of this invention connected to the electric power network and the communication network. It is explanatory drawing for demonstrating the structure of the integrated wind power generation system which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the wind farm which concerns on the 1st Embodiment of this invention. It is a schematic diagram which shows the general wind power generation system which concerns on embodiment of this invention, and the flow of external information. It is explanatory drawing explaining the goods of the power exchange connected with the integrated wind power control part which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the electric power generated and traded with the integrated wind power generation system which concerns on embodiment of this invention. It is explanatory drawing explaining the outline | summary of the contract process processed by the power exchange connected with the integrated wind power control part which concerns on embodiment of this invention. It is a flowchart figure which shows the flow of a process of the integrated wind power control part which concerns on embodiment of this invention. It is a flowchart figure which shows the flow of control in which the electric power by the side of a system | strain does not flow into the storage battery of a wind farm in the process of the integrated wind power control part which concerns on embodiment of this invention. It is a flowchart figure which shows the flow of control in which the electric power between wind farms flows into the storage battery of a 2nd type wind farm in the process of the integrated wind power control part which concerns on embodiment of this invention. It is a block diagram which shows the structure of the wind farm which concerns on the 2nd Embodiment of this invention. It is a flowchart figure which shows the flow of the augmentation type | mold control which adjusts an output using a storage battery presence, absence wind farm, and an electrical storage system in the process of the integrated wind power control part which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 General wind power control part, 12 Wind power DB, 13,81 Storage battery, 14 Electricity exchange, 15 Load, 16 Purchaser terminal, 17 1st type wind farm, 18 Wind farm, 19 2nd type wind farm, 21 Feeding command device , 22 Interconnection substation, 23 Transmission substation, 24 Distribution substation, 25 Power plant, 26 High voltage regulator, 27 Pole transformer, 30 Communication network, 40 Power network, 42 Transmission system, 44 Distribution Grid, 51 Wind farm control device, 53 Wind power generator, 55 Boosting equipment, 71 Wind power forecast DB, 72 Electric power sales forecast DB, 73 Actual power generation DB, 75 Wind power grid interconnection DB, 77 Wind power command DB, 80 Power storage system, 82 Power storage control device, 100 Integrated wind power generation system.

Claims (8)

In order to supply power every predetermined time as a product of the power exchange, information such as the amount of power generated by wind farms with multiple wind power generators is acquired via the communication network. In the integrated wind power generation system that controls the power generation amount of the wind turbine generator and supplies it to the power network
Wind power generation conditions for each wind farm in the past weather, wind conditions, season, time, or multiple conditions, and power generation acquisition means for acquiring the power generation, and conditions for each current wind farm and each wind power generation system And a power generation amount storage means for storing the power generation amount,
A supply amount prediction means for predicting power that can be supplied every predetermined time according to the past power generation results and numerical analysis results stored in the power generation amount storage means;
Bidding means for bidding on the demand for each predetermined time presented to the power exchange based on the predicted supply quantity obtained by the supply quantity forecasting means, and obtaining the contracted power amount and contract price agreed on at the power exchange When,
Charging / discharging control means for controlling the charging / discharging of the storage battery that charges the electric power generated by the wind power generator of the wind farm and discharges when it is insufficient;
Wind power generation management means for acquiring the power generation amount of a plurality of wind farms from the power generation amount acquisition means in order to supply the amount of power contracted by the bidding means, and charging / discharging the storage battery with the surplus or shortage by the charge / discharge control means When,
An integrated wind power generation system characterized by comprising: The integrated wind power generation system according to claim 1,
Wind farms controlled by wind power management means
A first type wind farm having a plurality of wind power generators;
A second type wind farm having a storage battery in the wind farm;
Including
When charging / discharging through the power network is restricted, the charge / discharge control means causes the second-type wind farm to charge the storage battery in the wind farm with the power of the wind power generator. system. The integrated wind power generation system according to claim 2,
When charging with electric power generated by another wind farm is possible via the electric power network, the charge / discharge control means causes the electric power network to discharge the electric power equivalent to the electric power generated by the wind power generator of the first type wind farm. The integrated wind power generation system is characterized in that the electricity equivalent to the electric power is charged to the storage battery of the second type wind farm. The integrated wind power generation system according to claim 2,
If it is possible to charge a storage facility that has a storage battery connected to the power network,
The charge / discharge control means supplies at least the power equivalent to the power generated by the wind power generator of the first type wind farm to the power network, and charges the power storage facility with the supplied power equivalent. . The integrated wind power generation system according to claim 2,
The charge / discharge control means charges the storage battery connected to the storage battery of the second type wind farm and the power network when the electric power for each predetermined time that is the product of the power exchange becomes equal to or higher than that. system. The integrated wind power generation system according to claim 2,
Wind power management means
Charge / discharge control means for controlling surplus or deficiency by charge / discharge of the storage battery;
Wind farm output control means for stopping or starting at least one of a plurality of wind power generators installed in each wind farm;
The integrated wind power generation system characterized by having. In the integrated wind power generation system according to claim 1,
The integrated wind power generation system, wherein the bidding means transmits the acquired contracted power amount and the grid interconnection information of the wind power generation apparatus stored in advance to a power supply command apparatus that manages the power network. In the integrated wind power generation system according to claim 1,
The integrated wind power generation system is characterized in that the wind power generation management unit monitors the power generation amount of the wind power generation apparatus and transmits the power generation amount to the power supply command device.

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