JP2008182017A - Control method of photovoltaic power generation system and power generation predicting apparatus of photovoltaic power generation system - Google Patents

Control method of photovoltaic power generation system and power generation predicting apparatus of photovoltaic power generation system Download PDF

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JP2008182017A
JP2008182017A JP2007013690A JP2007013690A JP2008182017A JP 2008182017 A JP2008182017 A JP 2008182017A JP 2007013690 A JP2007013690 A JP 2007013690A JP 2007013690 A JP2007013690 A JP 2007013690A JP 2008182017 A JP2008182017 A JP 2008182017A
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solar
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JP5194458B2 (en
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Mitsuyoshi Ejiri
Toshihisa Funahashi
Takanori Hayashi
Yasuyuki Hoshi
Hironori Nakajima
Yoshimichi Okuno
Hiroshi Shishido
Koji Watanabe
廣則 中島
義道 奥野
洋 宍道
靖之 星
孝則 林
光良 江尻
康治 渡辺
俊久 舟橋
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Meidensha Corp
株式会社明電舎
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in operation life and price of electrical power storage part in the photovoltaic power generation system in which a stabilizer is connected to a power system. <P>SOLUTION: The photovoltaic power generating apparatus is divided into a part for regulation operation and a part for backup operation. A control part stores a previously generated peak curve of power generation until the power generation end time from the power generation start time of the photovoltaic power generation apparatus and an operation planning table of charge to the power storage part. During a charging operation until the power generation end time from the power generation start time, an extra power is charged when power generation output is larger than the value in the charging operation planning table and a solar cell group for backup operation is connected to the power system when the power generation output is smaller than the scheduled charging value. Moreover, during a non-charging operation, discharging is conducted along the peak curve. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、太陽光発電システムの制御方法と太陽光発電システムの発電量予測装置に関するものである。   The present invention relates to a control method for a solar power generation system and a power generation amount prediction apparatus for the solar power generation system.

地球温暖化対策として省エネルギーが叫ばれる一方、電気エネルギーの分野でも再生可能エネルギーの利用が見直され、太陽光発電、風力発電や燃料電池、或いはバイオマス発電など自然エネルギーの分散型発電が盛んになりつつある。このような自然エネルギーを利用した電力システムとしては非特許文献1などによって公知となっており、自然エネルギーのような再生可能エネルギーの本格的導入のためには、配電系統の電圧変動や系統の周波数変動など電力系統に与える影響を緩和する必要がある。   While energy conservation is screamed as a measure against global warming, the use of renewable energy has been reviewed in the field of electrical energy, and distributed generation of natural energy such as solar power generation, wind power generation, fuel cells, or biomass power generation is becoming popular. is there. Such a power system using natural energy is known from Non-Patent Document 1 and the like. For the full-scale introduction of renewable energy such as natural energy, voltage fluctuations in the distribution system and frequency of the system are known. It is necessary to mitigate the effects of fluctuations on the power system.

電気は貯蔵できない特性を有していることから、瞬時瞬時で需要と供給のバランスが一致していないと安定した供給ができないため、既存電力会社の送電ネットワークを利用する事業者は、需要量と供給量について同時同量を達成することが求められている。例えば、従来での制度では30分ごとに送電サービス契約電力の3%の変動範囲内での同時同量が求められている。近年、この変動範囲を弾力化して、30分3%を基本としつつ、10%までは変動の程度に応じた段階別の不足供給料金(インバランス料金)を設定している。   Since electricity cannot be stored, if the balance between demand and supply does not match instantaneously and instantaneously, stable supply cannot be achieved. It is required to achieve the same amount of supply. For example, in the conventional system, the same amount within a fluctuation range of 3% of the transmission service contract power is required every 30 minutes. In recent years, the fluctuation range has been made elastic, and a short supply charge (imbalance charge) is set for each stage according to the degree of fluctuation up to 10%, while being basically 3% for 30 minutes.

また、送電ネットワークを利用する事業者は、電力系統との協調として、負荷平準化と電力品質向上で系統に寄与する運転も求められている。負荷平準化は、ピークシェイブ(電力波形のひげとり、潮流変動抑制)運転、ピークカット(電力ピーク量の別エネルギーへの変換)運転、ピークシフト(電力ピーク時間のシフト)運転が、その役割に応じ、それぞれ個別または組み合わせて状況に応じた適切な運転を行うことである。   In addition, operators who use the power transmission network are also required to perform operations that contribute to the system by load leveling and power quality improvement as cooperation with the power system. For load leveling, peak shave (shaping of power waveform, suppression of power flow fluctuation) operation, peak cut (conversion of power peak amount to another energy) operation, peak shift (shift of power peak time) operation Therefore, it is to perform an appropriate operation according to the situation individually or in combination.

図12は再生可能エネルギー電源を用いた分散電力のネットワーク図の例を示したものである。A,B,Cは分散電源系統で、それぞれ複数の再生可能エネルギー電源と電力負荷とでネットワークを有して一つの電力供給系統を構成している。図12ではAの分散電源系統が電力会社の系統に連系され、他の分散電源系統B,Cは分散電源系統Aに連系されている。再生可能エネルギー電源として太陽光発電システムが使用される場合、電力貯蔵装置(キャパシタや蓄電池)や変動追従性のある発電機(ガス発電機)を組み合わせて潮流変動抑制制御、需給同時同量制御、一定出力制御制御を実現している。これは電力変動分を、これら変動追従性の高い分散型電源に出力または吸収させることで、平準化を図ったものである。このような技術は、非特許文献1によって公知となっている。   FIG. 12 shows an example of a network diagram of distributed power using a renewable energy power source. A, B, and C are distributed power systems, each having a network of a plurality of renewable energy power sources and power loads to form one power supply system. In FIG. 12, the distributed power system A is connected to the power company system, and the other distributed power systems B and C are connected to the distributed power system A. When a solar power generation system is used as a renewable energy power source, a power storage device (capacitor or storage battery) or a generator with a tracking capability (gas generator) is combined to control tidal current fluctuation, Constant output control is realized. This is to achieve leveling by outputting or absorbing power fluctuations to these distributed power sources with high fluctuation tracking. Such a technique is known from Non-Patent Document 1.

図13は需給制御方法の概略図で、制御としては、運転計画に従った制御、負荷追従制御及びローカル追従制御が実行される。運転計画に従った制御としては予備発電力の不足発生による計画変更に基づく短時間運転計画変更や運転計画データに基づく運転パターン制御がある。負荷追従制御は、需給バランスの差分を制御し、ローカル追従制御は、高周波数成分の負荷変動に電力貯蔵装置からの充放電による追従制御が行われる。   FIG. 13 is a schematic diagram of a supply and demand control method. As control, control according to an operation plan, load follow-up control, and local follow-up control are executed. As the control according to the operation plan, there are short-time operation plan change based on the plan change due to the shortage of standby power generation and operation pattern control based on the operation plan data. The load follow-up control controls the difference between supply and demand balance, and the local follow-up control performs follow-up control by charging / discharging from the power storage device to load fluctuations of high frequency components.

太陽光発電システムでは、気候の予測による運転計画を動的に行い、かつ、自立運転用に用意する電力貯蔵装置などの変動追従電源を有効利用することにより、自然エネルギーの導入比を向上させている。また、分散電源系統では、需要と供給の時間的ミスマッチを解消し、間欠的なエネルギーを安定化することも可能とする。
舟橋他、「小規模電力系統(マイクログリッド)における発電機最適運転の検討」学会誌「EICA」第11巻第1,3合併号、pp.127−133、2006
太陽光発電システムでは、気候の予測による運転計画を動的に行い、かつ、自立運転用に用意する電力貯蔵装置などの変動追従電源を有効利用することにより、自然エネルギーの導入比を向上させている。また、分散電源系統では、需要と供給の時間的ミスマッチを解消し、間欠的なエネルギーを安定化することも可能とする。
舟橋他、「小規模電力系統(マイクログリッド)における発電機最適運転の検討」学会誌「EICA」第11巻第1,3合併号、pp.127−133、2006
In the solar power generation system, the natural energy introduction ratio is improved by dynamically performing an operation plan based on climate prediction and making effective use of a variable-tracking power source such as a power storage device prepared for independent operation. Yes. In addition, the distributed power supply system eliminates a time mismatch between supply and demand, and makes it possible to stabilize intermittent energy. In the solar power generation system, the natural energy introduction ratio is improved by dynamically performing an operation plan based on climate prediction and making effective use of a variable-tracking power source such as a power storage device prepared for independent operation. Yes. In addition , the distributed power supply system eliminates a time mismatch between supply and demand, and makes it possible to stabilize intermittent energy.

これらの分散型電源、特に電力貯蔵装置は、高価であり、これが大規模な太陽光発電普及の障害となっている。また、家庭用太陽光発電においても、同じ地域に一定規模以上の太陽光発電装置が集中すると系統の潮流への悪影響が大きいことから、まとまった単位で電力貯蔵装置を接続し、系統の安定化を図る計画が持たれている。この際にも、電力貯蔵装置の価格が弊害となっており、普及の妨げとなっているのが現状である。   These distributed power sources, particularly power storage devices, are expensive, which is an obstacle to the spread of large-scale photovoltaic power generation. Also, in the case of photovoltaic power generation for home use, if photovoltaic power generation devices of a certain size or more are concentrated in the same area, the power flow of the system will be adversely affected. There is a plan to plan. At this time, the current situation is that the price of the power storage device has become a harmful effect and has become a hindrance to its spread.

同時に、気象変化による太陽光発電の変動は大きく、変動追従特性の高い分散型電源を利用した平準化方式でも、太陽光発電の気象変化による発電量の変動に追従するのが困難であるのが現状であり、風力の出力変動緩和制御の例として「風力発電所出力の1分平均値を計算し、平時は、任意の20分間において、周波数変動対策後の風力発電設備合成出力(1分間平均値)の「最大電力−最小電力」が風力発電機の定格出力合計値の10%以下であること。」といった厳しい制限が太陽光発電に適用された場合、その条件を満たすには困難となっている。   At the same time, fluctuations in photovoltaic power generation due to weather changes are large, and even with a leveling method using a distributed power source with high fluctuation tracking characteristics, it is difficult to follow fluctuations in power generation due to weather changes in photovoltaic power generation. As an example of current output fluctuation mitigation control, the wind power plant output is calculated as a one-minute average value. During normal times, wind power generation equipment combined output after frequency fluctuation countermeasures (average for one minute) Value) of “maximum power minus minimum power” is 10% or less of the total rated output of the wind power generator. When strict restrictions such as “are applied to photovoltaic power generation, it is difficult to satisfy the conditions.

図14は太陽光発電の出力特性を示したもので、点線が太陽光発電のピーク曲線、実線が出力曲線で、雲の影響による日射強度の変化により大きく変動する。このように変動するものに対し、変動追従運転に用いる発電機として電力貯蔵装置を用いる場合には、電力貯蔵装置の残存容量の管理が問題となる。電力貯蔵装置の種類によっては直流電圧から残存容量を把握可能な場合もあるが、そうでない場合には残存容量を電流の積算(Ah)によって算出することが必要となる。残存容量の管理値の上下限に達した場合には充電または放電の何れかが行えなくなるため、残存容量を一定または設定した範囲内に納めるように運転計画による発電出力の運転パターンを修正する。太陽光発電能力と同等かつ十分な容量(5時間以上)の電力貯蔵装置が準備でき、適切な運転計画プログラムが用意できれば問題はないが、電力貯蔵装置の容量によっては、それ以上充放電ができない場合ができてしまう場面が出現し、運転の継続が困難となる。   FIG. 14 shows the output characteristics of photovoltaic power generation. The dotted line is the peak curve of photovoltaic power generation, and the solid line is the output curve, which varies greatly with changes in solar radiation intensity due to the influence of clouds. When the power storage device is used as the generator used for the fluctuation follow-up operation, management of the remaining capacity of the power storage device becomes a problem. Depending on the type of power storage device, the remaining capacity may be determined from the DC voltage, but in other cases, it is necessary to calculate the remaining capacity by integrating the current (Ah). When the upper and lower limits of the remaining capacity management value are reached, either charging or discharging cannot be performed. Therefore, the operation pattern of the power generation output according to the operation plan is corrected so that the remaining capacity falls within a fixed or set range. There is no problem if a power storage device with a capacity equivalent to that of solar power generation (5 hours or more) can be prepared and an appropriate operation planning program can be prepared, but depending on the capacity of the power storage device, charging and discharging cannot be further performed. A scene that can be created appears and it is difficult to continue driving.

加えて、太陽光発電装置を、商用系統に接続する際、太陽光の発電ピーク時刻(0時ごろ)と、商用系統の負荷が最大となる時刻(1時ごろ)にずれがあり、ニーズに対しての適合を欠いているのが問題としてあげられる。   In addition, when connecting a photovoltaic power generation system to a commercial system, there is a difference between the peak power generation time of solar power (around 0:00) and the time when the load on the commercial system is maximized (around 1:00). The lack of conformance is a problem.

本発明は、複数の太陽光発電装置を広域に分散配置し、その多様性によって太陽光発電の変動緩和に役立てると同時に、広域性を利用して、区域に細分化した個々の発電量の変動成分により、近未来の発電量を予測し、太陽光発電装置の最適な台数制御方法と装置を提供することにある。   The present invention distributes a plurality of photovoltaic power generation devices over a wide area, and uses the diversity to help reduce fluctuations in photovoltaic power generation. The purpose is to predict the amount of power generation in the near future based on the components and to provide an optimal number control method and apparatus for photovoltaic power generation devices.

本発明の第1は、太陽電池群よりなる太陽光発電装置と、電力貯蔵部と電力変換部を有する安定化装置を電力系統に接続し、安定化装置の制御部を介して電力変換部に対する制御を実行し、電力貯蔵部への充放電制御を行うように構成した太陽光発電システムにおいて、
前記太陽光発電装置を通常運転用と予備用に分けると共に、前記制御部には、予め作成された太陽光発電装置の発電開始時間から発電終了時間までの発電量のピーク曲線と前記電力貯蔵部に対する充放電の運転計画曲線を記憶させ、発電開始時間から発電終了時間での充電中で、前記充電運転計画曲線に基づく充電値よりも発電出力量が大きい時の余剰分を充電し、発電出力量が計画充電値よりも少ない時には前記予備用の太陽発電装置を電力系統に接続し、前記電力貯蔵部が所定値充電量となった時には放電モードに切替え、且つ前記発電開始時間から発電終了時間での非充電時のときには前記ピーク曲線に沿って放電し、全放電終了時には電力系統に接続された太陽光発電装置を解列する制御を、発電開始時間から発電終了時間まで定周期で繰り返し行うことを特徴としたものである。 The photovoltaic power generation device is divided into a normal operation device and a spare power generation device, and the control unit has a peak curve of the amount of power generation from the power generation start time to the power generation end time of the photovoltaic power generation device created in advance and the power storage unit. The operation plan curve of charge and discharge is memorized, and the surplus when the power generation output amount is larger than the charge value based on the charge operation plan curve during charging from the power generation start time to the power generation end time is charged to generate power. When the power is less than the planned charge value, the spare photovoltaic power generation device is connected to the power system, and when the power storage unit reaches the predetermined charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time. When not charged in, the photovoltaic power generation device is discharged along the peak curve, and when the entire discharge is completed, the control of disconnecting the photovoltaic power generation device connected to the power system is repeated at regular intervals from the power generation start time to the power generation end time. It is characterized by that. A first aspect of the present invention is to connect a photovoltaic power generation device including a solar cell group, a stabilization device having a power storage unit and a power conversion unit to the power system, and to the power conversion unit via a control unit of the stabilization device. In a photovoltaic power generation system configured to perform control and charge / discharge control to the power storage unit, A first aspect of the present invention is to connect a photovoltaic power generation device including a solar cell group, a stabilizing device having a power storage unit and a power conversion unit to the power system, and to the power conversion unit via a control unit of In a photovoltaic power generation system configured to perform control and charge / discharge control to the power storage unit,
The solar power generation device is divided into a normal operation and a standby one, and the control unit includes a peak curve of power generation amount from a power generation start time to a power generation end time of the solar power generation device created in advance and the power storage unit. The charging / discharging operation plan curve is stored, the surplus when the power generation output amount is larger than the charge value based on the charging operation plan curve during charging from the power generation start time to the power generation end time, When the power is smaller than the planned charge value, the spare solar power generation device is connected to the power system, and when the power storage unit reaches a predetermined value charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time When the battery is not charged at the time of non-charging, control is performed from the power g The solar power generation device is divided into a normal operation and a standby one, and the control unit includes a peak curve of power generation amount from a power generation start time to a power generation end time of the solar power generation device created in advance and The power storage unit. The charging / electrically operating plan curve is stored, the surplus when the power generation output amount is larger than the charge value based on the charging operation plan curve during charging from the power generation start time to the power generation end time , When the power is smaller than the planned charge value, the spare solar power generation device is connected to the power system, and when the power storage unit reaches a predetermined value charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time When the battery is not charged at the time of non-charging, control is performed from the power g eneration start time to the power generation end time. Be repeated at is obtained by it said. eneration start time to the power generation end time. Be repeated at is obtained by it said.

本発明の第2は、前記発電量のピーク曲線の算出は、快晴時の日射強度曲線に対し、当該時点までの変動頂点の各任意時刻での偏差を算出した平均し、その偏差分と快晴時の日射強度曲線とを乗算して日射強度ピーク曲線とし、この日射強度ピーク曲線と太陽電池効率を乗算することで当日のピーク曲線とすることを特徴としたものである。   According to a second aspect of the present invention, the peak curve of the power generation amount is calculated by averaging the deviation at each arbitrary time of the peak of fluctuation up to the time point with respect to the solar radiation intensity curve at the time of clear, The solar radiation intensity curve is multiplied by the solar radiation intensity peak curve, and the solar radiation efficiency peak curve is multiplied by the solar cell efficiency to obtain the peak curve of the day.

本発明の第3は、前記所定値充電量は、前記電力貯蔵部の満充電か、満充電時点から発電終了時間までに必要な電力量を満たす充電量を確保する量であることを特徴としたものである。   According to a third aspect of the present invention, the predetermined value charge amount is a charge amount that ensures a charge amount satisfying a required amount of power from a full charge of the power storage unit to a power generation end time. It is a thing.

本発明の第4は、前記充放電の運転計画曲線は、充電時の運転計画に基づく値と共に放電時のみの運転計画曲線を作成し、各計画曲線に基づく計画値は段階状に作成し、充電終了時と放電開始時の接合部分にピークシフト可能な時間間隔を持たせたことを特徴としたものである。   4th of this invention, the said operation plan curve of the said charge / discharge creates the operation plan curve only at the time of discharge with the value based on the operation plan at the time of charge, the plan value based on each plan curve creates in steps, This is characterized in that a time interval capable of peak shifting is provided at the junction at the end of charging and at the start of discharging.

本発明の第5は、前記電力貯蔵部は、非充電状態で、且つ発電量が運転計画曲線に基づく発電出力値よりも大きいときに、前記太陽光発電装置を電力系統から部分的に解列することを特徴としたものである。   According to a fifth aspect of the present invention, when the power storage unit is in a non-charged state and the power generation amount is larger than the power generation output value based on the operation plan curve, the solar power generation device is partially disconnected from the power system. It is characterized by doing.

本発明の第6は、前記太陽光発電装置の電力系統からの解列制御は、太陽光発電装置の出力予測量から負荷予測による電力量を差し引いた信号に基づくものであることを特徴としたものである。   A sixth aspect of the present invention is characterized in that the disconnection control from the power system of the photovoltaic power generation device is based on a signal obtained by subtracting the amount of power by load prediction from the predicted output amount of the photovoltaic power generation device. Is.

本発明の第7は、前記太陽電池群は、メッシュで区切られた区分単位で構成し、系統との接続と解列の切替制御は、任意の単位時間における発電量の出力予測と、この出力予測に対する発電変動時に各区分単位毎で行うことを特徴としたものである。   According to a seventh aspect of the present invention, the solar cell group is configured by division units divided by a mesh, and connection control with a system and disconnection switching control are performed for output prediction of power generation amount in an arbitrary unit time, and this output. It is characterized in that it is performed for each division unit when the power generation changes with respect to the prediction.

本発明の第8は、前記発電量の出力予測は、前記任意の単位時間をさらに細分化した短周期での計測幅を持たせて発電量を計測し、個々の太陽電池の効率と面積、短周期の計測時間から日射強度を算出し、これを前記メッシュの中心をx軸,y軸方向に1メッシュずつ過去データをシフトしながら短周期の計測時間単位分をn回繰り返して2つのデータの最大相関関数を算出し、この最大相関関数とメッシュ間の距離から風向きと風力を決定して短周期の計測結果より日射変動成分を抽出して前記単位時間分についての日射量を求め、この日射量に前記メッシュ個々で持つ発電効率と面積をかけて発電量の予測値とすることを特徴としたものである。   In the eighth aspect of the present invention, the output prediction of the power generation amount is to measure the power generation amount with a short period measurement width obtained by further subdividing the arbitrary unit time, and the efficiency and area of each solar cell, The solar radiation intensity is calculated from the short cycle measurement time, and the two data are obtained by repeating the short cycle measurement time unit n times while shifting the past data by one mesh in the x-axis and y-axis directions at the center of the mesh. The maximum correlation function is calculated, the wind direction and the wind force are determined from the distance between the maximum correlation function and the mesh, the solar radiation fluctuation component is extracted from the measurement result of the short period, and the amount of solar radiation for the unit time is obtained. The predicted amount of power generation is obtained by multiplying the solar radiation amount by the power generation efficiency and area of each mesh.

本発明の第9は、前記単位時間分の日射量は、風上側から順次繰り返して積算して求めることを特徴としたものである。   A ninth aspect of the present invention is characterized in that the amount of solar radiation for the unit time is obtained by being repeatedly accumulated sequentially from the windward side.

本発明の第10は、太陽電池群よりなる太陽光発電装置と、電力貯蔵部と電力変換部を有する安定化装置を電力系統に接続し、安定化装置の制御部を介して電力変換部に対する制御を実行し、電力貯蔵部への充放電制御を行うように構成した太陽光発電システムであって、前記太陽電池群を任意のメッシュで区切って区分単位とし、この区分単位毎に任意時間で発電量の出力予測を行い、この出力予測値に基づき発電量が予め作成された運転計画曲線の値より大のとき太陽光発電装置を電力系統から解列するものにおいて、
前記単位時間を細分化した短周期で個々の太陽光発電装置の発電量を計測する計測手段と、個々の太陽光発電装置における太陽電池効率と面積、及び前記短周期計測時間から日射強度を算出する日射強度算出手段と、前記区分単位のメッシュ中心をx軸,y軸方向に1メッシュずつ日射強度の過去データのシフトをn回繰返して2つのデータの最大相関係数を算出する最大相関係数算出手段と、この最大相関係数をメッシュ間の距離から風向きと風力を決定して日射変動分を決める日射変動分算出手段と、前記単位時間でメッシュの風上側から風下への繰返し得られる日射変動分の積算から前記単位時間分の日射量を算出する日射量算出手段と、得られた日射量にメッシュが持つ発電効率と面積をかけて発電量の予測値を算出する予測値算出手段とを備えたことを特徴としたものである。 The solar radiation intensity is calculated from the measuring means for measuring the amount of power generated by each photovoltaic power generation device in a short cycle subdivided into the unit time, the solar cell efficiency and area of ​​each photovoltaic power generation device, and the short cycle measurement time. The maximum phase relationship between the solar radiation intensity calculation means to be used and the maximum correlation coefficient of the two data is calculated by repeating the shift of the past data of the solar radiation intensity n times for each mesh in the x-axis and y-axis directions of the mesh center of the division unit. The number calculation means, the solar radiation fluctuation calculation means for determining the wind direction and the wind force from the distance between the meshes to determine the solar radiation fluctuation amount, and the solar radiation fluctuation calculation means for determining the solar radiation fluctuation amount, and the maximum correlation coefficient can be repeatedly obtained from the wind side to the leeward side of the mesh in the unit time. A solar radiation amount calculation means for calculating the solar radiation amount for the unit time from the integration of the solar radiation fluctuation amount, and a predictive value calculation means for calculating the predicted value of the power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and the area of ​​the mesh. It is characterized by having and. 10th of this invention connects the solar power generation device which consists of a solar cell group, and the stabilization apparatus which has an electric power storage part and a power conversion part to an electric power system, and with respect to a power conversion part via the control part of a stabilization apparatus. It is a photovoltaic power generation system configured to execute control and charge / discharge control to the power storage unit, and divide the solar cell group by an arbitrary mesh into division units, and for each division unit at an arbitrary time In the output prediction of the power generation amount, when the power generation amount is larger than the value of the operation plan curve created in advance based on the output prediction value, the solar power generation device is disconnected from the power system. 10th of this invention connects the solar power generation device which consists of a solar cell group, and the stabilizing apparatus which has an electric power storage part and a power conversion part to an electric power system, and with respect to a power conversion part via the It is a photovoltaic power generation system configured to execute control and charge / discharge control to the power storage unit, and divide the solar cell group by an arbitrary mesh into division units, and for each division unit at an arbitrary time In the output prediction of the power generation amount, when the power generation amount is larger than the value of the operation plan curve created in advance based on the output prediction value, the solar power generation device is disconnected from the power system.
Measuring means for measuring the power generation amount of each photovoltaic power generation device in a short cycle that subdivides the unit time, solar cell efficiency and area in each photovoltaic power generation device, and calculating the solar radiation intensity from the short cycle measurement time And a maximum correlation between calculating the maximum correlation coefficient of the two data by repeating the shift of the past data of the solar radiation intensity n times for each mesh in the x-axis and y-axis directions. The number calculation means, the maximum correlation coefficient, the solar radiation fluctuation calculation means for determining the solar radiation fluctuation by determining the wind direction and the wind power from the distance between the meshes, and the mesh can be obtained repeatedly from the windward side to the leeward in the unit time. A solar radiation amount calculating means for calculating the solar radiation amount for the unit time fr Measuring means for measuring the power generation amount of each photovoltaic power generation device in a short cycle that subdivides the unit time, solar cell efficiency and area in each photovoltaic power generation device, and calculating the solar radiation intensity from the short cycle measurement time And a maximum correlation between calculating the maximum correlation coefficient of the two data by repeating the shift of the past data of the solar radiation intensity n times for each mesh in the x-axis and y-axis directions. The number calculation means, the maximum correlation coefficient , the solar radiation fluctuation calculation means for determining the solar radiation fluctuation by determining the wind direction and the wind power from the distance between the meshes, and the mesh can be obtained repeatedly from the windward side to the leeward in the unit time. A solar radiation amount calculating means for calculating the solar radiation amount for the unit time fr om the integrated solar radiation fluctuation amount, and a predicted value calculation for calculating a predicted power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and area of the mesh Is obtained is characterized in that a stage. om the integrated solar radiation fluctuation amount, and a predicted value calculation for calculating a predicted power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and area of ​​the mesh Is obtained is characterized in that a stage.

以上のとおり、本発明によれば、太陽光発電装置の変動成分除去(平準化)制御や潮流一定運転に電力貯蔵部を利用するとき、充電切替回数を日に1回に制限が出来、高価な電力貯蔵部の劣化を防ぐことができる。また、大きな電力変動の吸収に充放電サイクルを変更しなければならないときは、予想される変動を吸収する電力量に一番近い太陽光発電装置(太陽電池群)を選択し、解列または接続する台数運転制御時においては、電力貯蔵部の負担を減らし、劣化を防止することが可能となると共に、電力貯蔵部に電気二重層キャパシタが使用されていた場合には、その容量を減らすことが可能となる。
また、広域化による日射強度の多様性からくる太陽光発電装置の発電量の平準化が図ると同時に、変動吸収を複数の太陽電池群のオン/オフ機能を持たせることで、系統への信頼性・品質・経済性の向上を実現する。 In addition, the power generation amount of the photovoltaic power generation equipment will be leveled due to the diversity of solar radiation intensity due to the wide area, and at the same time, the fluctuation absorption will be provided with the on / off function of multiple solar cell groups, so that the system can be trusted. Realize improvement of sex, quality and economy. As described above, according to the present invention, when the power storage unit is used for fluctuation component removal (leveling) control or constant power flow operation of the photovoltaic power generation device, the number of charge switching can be limited to once a day, which is expensive. Deterioration of the power storage unit can be prevented. Also, when the charge / discharge cycle must be changed to absorb large power fluctuations, select the solar power generation device (solar cell group) closest to the amount of power to absorb the expected fluctuations, and disconnect or connect When controlling the number of units to be operated, it is possible to reduce the burden on the power storage unit and prevent deterioration, and if an electric double layer capacitor is used in the power storage unit, the capacity can be reduced. It becomes possible. As described above, according to the present invention, when the power storage unit is used for fluctuation component removal (leveling) control or constant power flow operation of the photovoltaic power generation device, the number of charge switching can be limited to once a day, Which is expensive. Deterioration of the power storage unit can be prevented. Also, when the charge / discharge cycle must be changed to absorb large power fluctuations, select the solar power generation device (solar cell group) closest to the amount of power to absorb. the expected fluctuations, and disconnect or connect When controlling the number of units to be operated, it is possible to reduce the burden on the power storage unit and prevent deterioration, and if an electric double layer capacitor is used in the power storage unit, the capacity can be reduced. It becomes possible.
In addition, the level of power generation of photovoltaic power generation systems due to the diversity of solar radiation intensity due to the wide area is achieved, and at the same time, fluctuation absorption is provided with the on / off function of multiple solar cell groups, so that the reliability of the system is trusted. Realize improvements in productivity, quality and economy. In addition, the level of power generation of photovoltaic power generation systems due to the diversity of solar radiation intensity due to the wide area is achieved, and at the same time, fluctuation absorption is provided with the on / off function of multiple solar cell groups , so that the reliability of the system is trusted. Realize improvements in productivity, quality and economy.

図1は本発明が実施される太陽光発電システムの構成例を示したものである。1及び2はそれぞれ複数のパネルからなる太陽電池で、そのうちの1(1a,1b…1n)は第1の太陽電池群で主として常用使用される。2(2a…)は第2の太陽電池群で主として予備に使用される。3,4はパワーコンデショナーで、DC/DC変換、若しくはDC/AC変換機能、及びそれらを制御するための制御回路を有して太陽電池1,2にそれぞれ接続されて太陽光発電装置を構成し、
この太陽光発電装置から所定の電力量が出力される。 A predetermined amount of electric power is output from this photovoltaic power generation device. 5,6は変圧器、7は太陽光発電システムの変電所、8は変電所の母線、9は電力会社の変電所である。 5 and 6 are transformers, 7 is a substation of a photovoltaic power generation system, 8 is a bus of a substation, and 9 is a substation of an electric power company. FIG. 1 shows a configuration example of a photovoltaic power generation system in which the present invention is implemented. 1 and 2 are solar cells each composed of a plurality of panels, and 1 (1a, 1b... 1n) of them is mainly used in the first solar cell group. 2 (2a...) Is mainly used as a spare in the second solar cell group. Reference numerals 3 and 4 denote power conditioners which have a DC / DC conversion or DC / AC conversion function and a control circuit for controlling them, and are connected to the solar cells 1 and 2, respectively, to constitute a photovoltaic power generation apparatus. , FIG. 1 shows a configuration example of a photovoltaic power generation system in which the present invention is implemented. 1 and 2 are solar cells each composed of a plurality of panels, and 1 (1a, 1b ... 1n) of them is mainly used in the first solar cell group. 2 (2a ...) Is mainly used as a spare in the second solar cell group. Reference numerals 3 and 4 investigated power conditioners which have a DC / DC conversion or DC / AC conversion function and a control circuit for controlling them, and are connected to the solar cells 1 and 2, respectively, to constitute a photovoltaic power generation apparatus.,
A predetermined amount of electric power is output from this solar power generation device. 5 and 6 are transformers, 7 is a substation of a photovoltaic power generation system, 8 is a bus of the substation, and 9 is a substation of an electric power company. A predetermined amount of electric power is output from this solar power generation device. 5 and 6 are transformers, 7 is a substation of a photovoltaic power generation system, 8 is a bus of the substation, and 9 is a substation of an electric power company ..

10は電力貯蔵部を有する安定化装置で、変電所の母線8に複数(ここでは10a,10b)接続されている。安定化装置10a,10bは、電力貯蔵部11a,11bと、充放電を実行するために直流−交流変換機能を有する電力変換部12a,12b、及び連系変圧器13a,13b等を有している。14は制御部で、電力貯蔵部11における充電状態検出信号A,B、安定化装置10の出力電圧、及び電流の各検出信号を入力し、これら各入力信号と予め設定された設定信号に基づいて電力変換部12に対する制御信号を生成する。電力貯蔵部11に使用される蓄電部としては、電気二重層キャパシタやリチウム・イオン蓄電池等、その種類については制限されずに使用できる。15は中央の制御所で、電力系統の状況に応じてパワーコンデショナー3,4の制御回路や安定化装置10の制御部14との信号の授受を行って所望の制御を実行する。
なお、図1では、母線8に接続される負荷及びガス発電機などの他の変動追従型発電機等は省略している。 Note that in FIG. 1, the load connected to the bus 8 and other fluctuation-following generators such as a gas generator are omitted. Reference numeral 10 denotes a stabilization device having a power storage unit, and a plurality (here, 10a, 10b) are connected to the bus 8 of the substation. Stabilizers 10a and 10b include power storage units 11a and 11b, power conversion units 12a and 12b having a DC-AC conversion function to perform charging and discharging, and interconnection transformers 13a and 13b. Yes. Reference numeral 14 denotes a control unit that inputs the charge state detection signals A and B in the power storage unit 11, the output voltage and current detection signals of the stabilizing device 10, and based on these input signals and preset setting signals. Then, a control signal for the power converter 12 is generated. As an electrical storage part used for the electric power storage part 11, it can use without being restrict | limited about the kind, such as an electric double layer capacitor and a lithium ion storage battery. Reference numeral 15 denotes a central control station that performs de Reference numeral 10 Then a stabilization device having a power storage unit, and a plurality (here, 10a, 10b) are connected to the bus 8 of the substation. Stabilizers 10a and 10b include power storage units 11a and 11b, power conversion units 12a and 12b having a DC-AC conversion function to perform charging and cyclic, and interconnection transformers 13a and 13b. Yes. Reference numeral 14 Then a control unit that inputs the charge state detection signals A and B in the power storage unit 11, the output voltage And current detection signals of the stabilizing device 10, and based on these input signals and preset setting signals. Then, a control signal for the power converter 12 is generated. As an electrical storage part used for the electric power storage part 11, it can use without being restrict | limited about the kind, such as an electric double layer capacitor and a lithium ion storage battery. Reference numeral 15 Then a central control station that performs de sired control by exchanging signals with the control circuit of the power conditioners 3 and 4 and the control unit 14 of the stabilization device 10 according to the state of the power system. sired control by exchanging signals with the control circuit of the power conditioners 3 and 4 and the control unit 14 of the stabilizing device 10 according to the state of the power system.
In FIG. 1, the load connected to the bus 8 and other fluctuation following generators such as a gas generator are omitted. In FIG. 1, the load connected to the bus 8 and other fluctuation following generators such as a gas generator are omitted.

太陽光発電システムの変電所7と電力会社の変電所9との連系運転時の安定化装置10は、連系点の潮流変動分を求め、電力変換部12を介して変動分を補償するような出力制御を行う。 The stabilization device 10 during the interconnection operation between the substation 7 of the photovoltaic power generation system and the substation 9 of the electric power company obtains the fluctuation amount of the power flow at the interconnection point and compensates the fluctuation amount via the power conversion unit 12. Perform output control like this.

一般に、以上のように構成された太陽光発電システムにおいて、安定化装置10を用いて平準化(変動成分除去)制御を実施するとき、変動成分の中央に出力
目標値を設け、この目標値に対して発電量が上回るときはその分を充電し、発電量が足りないときは、その分を放電して平滑化する方法がとられる。図11は
太陽光発電の発電量と時間関係図を示したもので、線アは太陽光発電の発電量が雲に影響されない快晴時の出力曲線、線イは電力貯蔵部の運転計画曲線(値)、線ウが当日の太陽光発電装置の出力曲線で、雲による影響で日射強度が変化することにより発電出力が変化している。設定された運転計画曲線イに従った制御方法では、当日の太陽光発電装置の出力曲線ウが変動の度に、電力貯蔵部11の充放電が繰り返されてしまう。
In general, in the photovoltaic power generation system configured as described above, when leveling (variation component removal) control is performed using the stabilization device 10, an output target value is provided at the center of the variation component, and the target value is set to this target value. On the other hand, when the power generation amount exceeds, the amount is charged, and when the power generation amount is insufficient, the amount is discharged and smoothed. FIG. 11 is a graph showing the relationship between the amount of power generated by photovoltaic power generation and the time. Line A is an output curve during clear weather when the amount of photovoltaic power generated is not affected by clouds, and line A is an operation plan curve ( Value), line U is the output curve of the solar power generation device on that day, and the power generation output changes due to the change of solar radiation intensity due to the influence of clouds. In the control method according to the set operation plan curve (i), charging / discharging of the power storage unit (11) is repeated each time the output curve (c) of the photovoltaic power generation device on the day fluctuates.

電気二重層キャパシタやコンデンサのような化学反応を伴わないデバイスでは問題でないが、一般の蓄電池では充放電の繰り返し回数は寿命に影響し、ランニングコストを高める。そこで、電力貯蔵部11に対する充電切換回数を制限して電力貯蔵部11の劣化を防ぎ、且つ電気二重層キャパシタやコンデンサの場合も含めて電力貯蔵部11の必要容量を減少させるための具体的な手段についての本発明の実施例を以下に説明する。   This is not a problem with devices that do not involve chemical reactions, such as electric double layer capacitors and capacitors, but in general storage batteries, the number of charge / discharge cycles affects the life and increases running costs. Therefore, a specific example for limiting the number of times of charge switching for the power storage unit 11 to prevent deterioration of the power storage unit 11 and reducing the necessary capacity of the power storage unit 11 including the case of an electric double layer capacitor or a capacitor. An embodiment of the present invention for means will be described below.

図2は、運転計画に基づいて電力貯蔵部11を変動成分除去に使用する場合の本発明の実施例を示すフローチャートである。ステップS1では、1日の運転が開始される。ステップS2では図3で示す線イ’で示すピーク曲線を作成する。
太陽光発電の発電量のピーク曲線アの算出方法としては、図11と同様に雲がないとき(快晴時)の、日射強度曲線に対し、この時点までの変動頂点の、各時刻での偏差を算出し、それを平均する。 As a method of calculating the peak curve a of the amount of power generated by photovoltaic power generation, as in FIG. 11, the deviation of the fluctuation vertices up to this point with respect to the solar radiation intensity curve when there is no cloud (when the weather is fine) at each time. Is calculated and averaged. その偏差分を、快晴時の日射強度曲線にかけて、当日の、以後の日射強度ピーク曲線イを作成する。 The deviation is multiplied by the solar radiation intensity curve at the time of fine weather to create the solar radiation intensity peak curve a of the day and thereafter. 太陽光発電の効率(計算による日射強度と、発電量の実測値から算出)を掛けて、当日の太陽光発電量のピーク曲線とする(S3)。 Multiply the efficiency of photovoltaic power generation (calculated from the calculated solar radiation intensity and the measured value of the photovoltaic power generation amount) to obtain the peak curve of the photovoltaic power generation amount on the day (S3). 当日のピーク曲線イ'は、時刻t1かにピーク値となるt2までか、当該日における電力貯蔵部11の充電分の運転計画値であり、予想される当日の太陽光発電量のピーク曲線ウよりも下限に設定され、また、 The peak curve a'on the day is the operation plan value for the charge of the power storage unit 11 on that day, up to t2, which is the peak value at time t1, and the peak curve c Is set to the lower limit, and also
t2からt3までが電力貯蔵部11の放電分の運転計画値で、当日の太陽光発電量のピーク曲線ウよりも上限に設定される。 T2 to t3 are the operation plan values ​​for the discharge of the power storage unit 11, and are set to the upper limit than the peak curve c of the amount of photovoltaic power generation on the day. S4では太陽電池群を通常運転用1a,1b…と予備運転用2a…に分け、これらの各データや計画値は制御部14に格納される。 In S4, the solar cell group is divided into 1a, 1b ... For normal operation and 2a ... For preliminary operation, and each of these data and planned values ​​are stored in the control unit 14. FIG. 2 is a flowchart showing an embodiment of the present invention when the power storage unit 11 is used for fluctuation component removal based on the operation plan. In step S1, one-day operation is started. In step S2, a peak curve indicated by line A ′ shown in FIG. 3 is created. FIG. 2 is a flowchart showing an embodiment of the present invention when the power storage unit 11 is used for fluctuation component removal based on the operation plan. In step S1, one-day operation is started. In step S2, a peak curve indicated by line A ′ shown in FIG. 3 is created.
As a method of calculating the peak curve a of the amount of photovoltaic power generation, the deviation at each time of the peak of fluctuation up to this point is compared to the solar radiation intensity curve when there is no cloud (sunny) as in FIG. Is calculated and averaged. The deviation is applied to the solar radiation intensity curve at the time of fine weather, and the solar radiation intensity peak curve a after that day is created. Multiply the efficiency of solar power generation (calculated from the calculated solar radiation intensity and the actual value of the power generation amount) to obtain the peak curve of the solar power generation amount on that day (S3). The peak curve a ′ of the day is the operation plan value for the charge of the power storage unit 11 until the peak value t2 at the time t1, or the expected peak curve of the photovoltaic power generation amount on the day. Than the lower limit, and As a method of calculating the peak curve a of the amount of photovoltaic power generation, the deviation at each time of the peak of fluctuation up to this point is compared to the solar radiation intensity curve when there is no cloud (sunny) as in FIG Is calculated and averaged. The deviation is applied to the solar radiation intensity curve at the time of fine weather, and the solar radiation intensity peak curve a after that day is created. Multiply the efficiency of solar power generation (calculated from the calculated solar radiation intensity and the actual value of the power generation amount) to obtain the peak curve of the solar power generation amount on that day (S3). The peak curve a ′ of the day is the operation plan value for the charge of the power storage unit 11 until the peak value t2 at the time t1, or the expected peak curve of the photovoltaic power generation amount on the day. Than the lower limit, and
From t2 to t3 is the operation plan value for the discharge of the power storage unit 11, which is set to an upper limit than the peak curve C of the photovoltaic power generation amount on that day. In S4, the solar cell group is divided into normal operation 1a, 1b,... And preliminary operation 2a, and these data and plan values are stored in the control unit 14. From t2 to t3 is the operation plan value for the discharge of the power storage unit 11, which is set to an upper limit than the peak curve C of the photovoltaic power generation amount on that day. In S4, the solar cell group is divided into normal operation 1a, 1b, ... And preliminary operation 2a, and these data and plan values ​​are stored in the control unit 14.

ステップS5では、時刻t1のように太陽電池が発電を開始する時点以後(図3の時刻t1+n)を充電開始時点として制御部14に設定し、この充電開始時点t1+nになると制御部14は電力変換部12に対して以下のような制御指令を発する。充電は時刻t1+nから、例えば日没近辺の時刻t3まで定周期で繰り返し行われるが、ステップS6では充電終了時刻t3になったか否かが判断され、時刻t3になっていない場合にはS7で充電中か否かが判定される。充電中の場合には、S8において、S3で設定された運転計画値と検出された現在の太陽電池の発電出力量との大小比較が実行され、発電出力が大きいときにはS9で余剰分を充電する制御を実行する。また、発電出力が小さいときには、S10で遮断器CB2を投入して第2の太陽電池群を系統に接続する。ステップS11では、電力貯蔵装置が満充電となったか否かが判断され、満充電が確保されたときにはS12で放電モードに切替えた後に、また、満充電が確保されてないときにはそのままS6に移行する。   In step S5, after the time when the solar cell starts power generation as at time t1 (time t1 + n in FIG. 3) is set in the control unit 14 as the charging start time, and when the charging start time t1 + n is reached, the control unit 14 converts the power. The following control command is issued to the unit 12. Charging is repeated at regular intervals from time t1 + n to, for example, time t3 near sunset. In step S6, it is determined whether or not charging end time t3 has been reached, and if not time t3, charging is performed in S7. It is determined whether it is medium or not. In the case of charging, in S8, a comparison is made between the operation plan value set in S3 and the detected power generation output amount of the current solar cell, and when the power generation output is large, the surplus is charged in S9. Execute control. When the power generation output is small, the circuit breaker CB2 is turned on in S10 to connect the second solar cell group to the system. In step S11, it is determined whether or not the power storage device is fully charged. After full charge is secured, the mode is switched to the discharge mode in S12, and when full charge is not secured, the process directly proceeds to S6. .

一方、S7で充電中でなかった場合には、S13においてS2で作成したピーク曲線に沿って放電し、この放電は全放電まで、ピーク曲線に沿って、電力出力が足りない分を放電し、S14で全部放電されたかが判断される。全部放電されていた場合には太陽光発電の平準化制御ができなくなるので、その場合、S15で遮断器CB1を開放して第1の太陽電池群を系統の接続から解列してS6に移行する。   On the other hand, if the battery is not being charged in S7, the battery discharges along the peak curve created in S2 in S13, and the discharge discharges the insufficient power output along the peak curve until the entire discharge. In S14, it is determined whether all the discharges have been made. Since the leveling control of the photovoltaic power generation cannot be performed when all the discharges are made, in that case, the circuit breaker CB1 is opened in S15, the first solar cell group is disconnected from the system connection, and the process proceeds to S6. To do.

上記したステップS7〜S15までを日の出から日没まで、平準化に必要な電力量を満たす充電量を確保できるまで、太陽光発電の全発電量を充電にあてる。そのためには、必要に応じて季節、日時、位置、天気予報、気温、湿度、風向、風力などの値をパラメータとし、導いた日照強度曲線、日照量、変化幅から算出する。また、過去データを用いてのニューロネットワーク技術やカオス技術を用いて計算を補強する等の手段が採られる。S14の放電判断時において図3で示す時刻t3となり、日没となっても蓄電容量があるときは、S16にて一定出力で余剰分を全放電するか、若しくは翌日分の制御のためにそのままにする。
S17で1日の運転が終了する。 The day's operation ends at S17. The above-described steps S7 to S15 are charged from the total power generation amount of solar power generation until the charge amount satisfying the power amount necessary for leveling can be secured from sunrise to sunset. For that purpose, the values of season, date and time, position, weather forecast, temperature, humidity, wind direction, wind force, etc. are used as parameters, as necessary, and calculated from the derived sunshine intensity curve, sunshine amount and change width. In addition, measures such as reinforcing the calculation using a neuro-network technology or chaos technology using past data are taken. When the discharge is determined at S14, the time t3 shown in FIG. 3 is reached, and if there is a storage capacity even at sunset, the surplus is fully discharged at a constant output at S16, or is left as it is for the control of the next day. To. The above-described steps S7 to S15 are charged from the total power generation amount of solar power generation until the charge amount satisfying the power amount necessary for leveling can be secured from sunrise to sunset. For that purpose, the values ​​of season, date and time, position, weather forecast, temperature, humidity, wind direction, wind force, etc. are used as parameters, as necessary, and calculated from the derived sunshine intensity curve, sunshine amount and change width. In addition, measures such as enabling the calculation using a neuro-network technology or chaos technology using past data are taken. When the discharge is determined at S14, the time t3 shown in FIG. 3 is reached, and if there is a storage capacity even at sunset, the surplus is fully discharged at a constant output at S16, or is left as it is for the control of the next day. To.
In S17, the operation of the day ends. In S17, the operation of the day ends.

ここで、ステップS3で作成される運転計画曲線イ’は、時刻t2は満充電、又は平準化に必要な電力量の何れかを満たす充電時間で、時刻t2近辺から日没となる時刻t3までがピーク曲線に沿って放電する。その際、時刻t2で急激に充電し、時刻t2以降で放電を開始すると系統に悪影響を及ぼす懸念が生じる。そのため、この実施例では、時刻t2までの充電運転計画曲線に基づく充電制御は、変動幅を抑制した運転計画とされることから、電力系統に悪影響を与えることなく電力の平準化制御が可能となるものである。   Here, the operation plan curve a ′ created in step S3 is a charging time that satisfies either the full charge or the electric energy required for leveling at time t2, and from time t2 to sunset t3. Discharges along the peak curve. At that time, if the battery is rapidly charged at time t2 and discharge is started after time t2, there is a concern that the system will be adversely affected. Therefore, in this embodiment, the charging control based on the charging operation plan curve until time t2 is an operation plan in which the fluctuation range is suppressed, so that power leveling control can be performed without adversely affecting the power system. It will be.

なお、時刻t2における変動幅を抑えた運転計画によって発電出力の大きい分は全て充電(ステップS9)し、発電出力に足りない変動分は予備用の太陽光発電装置で補なっている(ステップS10)。それでも足りない部分は、S12で放電しているために、その分だけ充放電回数は増えるが、全部の変動に対して切替え動作が生じるわけではなく、図3で云えば時刻t2直前の計画に対する当該時刻の発電量の不足部分のみである。
また、時刻t2以降の放電時での放電量は、予備用の太陽光発電装置が補ったあとの差分であるため、電力貯蔵部10に対する放電深度を浅くすることができ、電力貯蔵部10の寿命への影響を軽減することができる。 Further, since the discharge amount at the time of discharge after time t2 is the difference after the spare solar power generation device supplements, the discharge depth with respect to the power storage unit 10 can be made shallow, and the power storage unit 10 can be made shallower. The effect on the life can be reduced. It should be noted that according to the operation plan in which the fluctuation range at time t2 is suppressed, all of the power generation output that is large is charged (step S9), and the fluctuation that is insufficient for the power generation output is supplemented by a spare solar power generation device (step S10). ). However, since the portion that is still insufficient is discharged in S12, the number of times of charging / discharging increases by that amount. However, the switching operation does not occur for all fluctuations. In FIG. Only the shortage of power generation at that time. It should be noted that according to the operation plan in which the fluctuation range at time t2 is suppressed, all of the power generation output that is large is charged (step S9), and the fluctuation that is insufficient for the power generation output is supplemented by a spare solar power generation device (step S10).). However, since the portion that is still insufficient is discharged in S12, the number of times of charging / similarly increases by that amount. However, the switching operation does not occur for all fluctuations. In FIG. Only the shortage of power generation at that time.
Moreover, since the discharge amount at the time of discharge after time t2 is a difference after the backup solar power generation device compensates, the discharge depth with respect to the power storage unit 10 can be reduced, and the power storage unit 10 The impact on life can be reduced. Moreover, since the discharge amount at the time of discharge after time t2 is a difference after the backup solar power generation device compensates, the discharge depth with respect to the power storage unit 10 can be reduced, and the power storage unit 10 The impact on life can be reduced.

図4は、太陽光発電装置の潮流一定制御に図1の電力貯蔵装置を使用した本発明の実施例を示すフローチャートである。
近年、分散電源系統では、PPSや電力会社への売電時には、一定時間出力を一定に保つ潮流一定出力が求められている。これらの条件として、例えば、

(1)発電所出力の1分平均値を計算し、平時は、任意の時間内において、周波数変動対策後の発電設備合成出力(1分間平均値)の「最大電力−最小電力」が全発電機の定格出力合計値の10%以下であること。 (1) Calculate the 1-minute average value of the power plant output, and in normal times, the "maximum power-minimum power" of the combined power generation equipment output (1 minute average value) after frequency fluctuation countermeasures is the total power generation within an arbitrary time. Must be 10% or less of the total rated output of the machine.
(2)指定された時間帯において、周波数変動対策後の全電設備合成出力を電力系統に流出されず一定にすること、または発電機を解列すること。 (2) In the designated time zone, make the combined output of all electric equipment after frequency fluctuation countermeasures constant without flowing out to the power system, or disengage the generator.
である。 Is. ここで、出力一定とは1分間平均値と一定制御目標値の偏差を定格出力合計値の2%以下とする、といった表現があてはまる。 Here, the expression "constant output" applies such that the deviation between the average value for 1 minute and the constant control target value is 2% or less of the total rated output value. そのためには、一定時間内の一定出力を1分間隔でのばらつきを押さえながら制御する技術が必要となり、図5の実施例は、太陽光発電装置を含む分散電源系統への適用を可能としたものである。 For that purpose, a technique for controlling a constant output within a fixed time while suppressing variation at 1-minute intervals is required, and the embodiment of FIG. 5 can be applied to a distributed power generation system including a photovoltaic power generation device. It is a thing. FIG. 4 is a flowchart showing an embodiment of the present invention in which the power storage device of FIG. 1 is used for constant power flow control of the solar power generation device. FIG. 4 is a flowchart showing an embodiment of the present invention in which the power storage device of FIG. 1 is used for constant power flow control of the solar power generation device.
In recent years, distributed power systems are required to have a constant power output that keeps the output constant for a certain period of time when selling power to a PPS or power company. As these conditions, for example, In recent years, distributed power systems are required to have a constant power output that keeps the output constant for a certain period of time when selling power to a PPS or power company. As these conditions, for example,
(1) Calculate the 1-minute average value of the power plant output. During normal times, the “maximum power minus minimum power” of the combined output of power generation facilities (average value for 1 minute) after frequency fluctuation countermeasures will be generated within an arbitrary period of time. Must be 10% or less of the total rated output of the machine. (1) Calculate the 1-minute average value of the power plant output. During normal times, the “maximum power minus minimum power” of the combined output of power generation facilities (average value for 1 minute) after frequency fluctuation measures will be generated Within an arbitrary period of time. Must be 10% or less of the total rated output of the machine.
(2) In the designated time zone, make the total electric equipment combined output after frequency fluctuation countermeasure constant without being discharged to the power system, or disconnect the generator. (2) In the designated time zone, make the total electric equipment combined output after frequency fluctuation measures constant without being discharged to the power system, or disconnect the generator.
It is. Here, “constant output” applies to the expression that the deviation between the average value for one minute and the constant control target value is 2% or less of the total rated output value. For that purpose, it is necessary to have a technique for controlling a constant output within a certain time while suppressing variations at intervals of 1 minute, and the embodiment of FIG. 5 can be applied to a distributed power system including a solar power generation device. Is. It is. Here, “constant output” applies to the expression that the deviation between the average value for one minute and the constant control target value is 2% or less of the total rated output value. For that purpose, it is necessary to have a technique for controlling a constant output within a certain time while suppressing variations at intervals of 1 minute, and the embodiment of FIG. 5 can be applied to a distributed power system including a solar power generation device. Is.

図4において、図2と異なる部分は、ステップS3で作成される運転計画曲線が、図5で示すように段階状に作成されることと、ステップS13〜S15に代えてS20〜S24の機能を設けたことである。したがって、図2と同一、若しくは相当する部分に同一符号を付してその説明を省略する。   4 differs from FIG. 2 in that the operation plan curve created in step S3 is created stepwise as shown in FIG. 5, and the functions of S20 to S24 are substituted for steps S13 to S15. It is provided. Therefore, the same or corresponding parts as those in FIG.

ステップS7で充電中でなかった場合、S20において、予めS3にて作成された運転計画値より発電出力が大きいか否かが判断される。大きい場合には運転曲線に従って放電(S21)し、少ない場合にはS22で余剰分に相当する太陽光発電装置を系統から解列する。この解列指令は中央の制御所15よりパワーコンデショナー3のスイッチ手段に出力することにより部分的な太陽光発電装置の解列が実行される。そして、S23では全部放電されたかが判断され、全部放電されていた場合には太陽光発電の平準化制御ができなくなるので、その場合、S24で遮断器CB1を開放して第1の太陽電池群を系統の接続から解列してS6に移行する。また、S23で全部放電されてない場合もS6に移行し、ステップS7〜S12とS20〜S24を日の出から日没まで定周期で繰り返えされる。   If charging is not being performed in step S7, it is determined in S20 whether or not the power generation output is greater than the operation plan value created in advance in S3. When it is large, discharge (S21) is performed according to the operation curve, and when it is small, the solar power generation device corresponding to the surplus is disconnected from the system in S22. This disconnection command is output from the central control station 15 to the switch means of the power conditioner 3 to execute partial disconnection of the photovoltaic power generation apparatus. Then, in S23, it is determined whether or not all the discharges are made. If all the discharges are made, the leveling control of the photovoltaic power generation cannot be performed. In that case, the circuit breaker CB1 is opened in S24 and the first solar cell group is changed. Disconnect from the system connection and proceed to S6. In addition, when not completely discharged in S23, the process proceeds to S6, and steps S7 to S12 and S20 to S24 are repeated at regular intervals from sunrise to sunset.

図5はステップS2及びS3で作成された潮流一定制御のための出力曲線で、時刻t11から時刻t12までが満充電、又は日没まで潮流一定制御運転に必要な電力量の、何れかを満たすまでを設定した充電のみの運転時間、時刻t12から時刻t13までが全放電までの放電のみの計画運転時間で、時刻t12前後では充放電の段階的区分間隔より時間幅がやや大きく設定されてピークシフトが可能となっている。また、線アと線イ間の斜線部で、時刻t11からt12までは充電量、t12からt13までが放電量となっている。
制御部14は、予め設定されたこの発電予想曲線に沿って1日の充放電制御を実行する。 The control unit 14 executes daily charge / discharge control according to this preset power generation prediction curve. すなわち、時刻t12までは段階的に設定された発電予想曲線に沿って充電を行い、時刻t12以降は潮流一定制御のための計画値から太陽光発電装置の出力値を引いた差分が放電量となる。 That is, charging is performed according to the power generation prediction curve set stepwise until time t12, and after time t12, the difference obtained by subtracting the output value of the photovoltaic power generation device from the planned value for constant tidal current control is the discharge amount. Become. FIG. 5 is an output curve for constant tidal current control created in steps S2 and S3, which satisfies either the full charge from time t11 to time t12 or the amount of power required for constant tidal control operation until sunset. The operation time for only charging that is set up until time t12 to the time t13 is the planned operation time for only discharging until the entire discharge, and the time width is set slightly larger than the stepwise interval between charging and discharging before and after time t12. Shift is possible. Further, in the hatched portion between line A and line A, the charging amount is from time t11 to t12, and the discharging amount is from t12 to t13. FIG. 5 is an output curve for constant tidal current control created in steps S2 and S3, which satisfies either the full charge from time t11 to time t12 or the amount of power required for constant tidal control operation until sunset. The operation time for only charging that is set up until time t12 to the time t13 is the planned operation time for only operating until the entire discharge, and the time width is set slightly larger than the stepwise interval between charging and typically before and after time t12. Shift is possible Further, in the hatched portion between line A and line A, the charging amount is from time t11 to t12, and the efficiently amount is from t12 to t13.
The control unit 14 performs the daily charge / discharge control along the preset power generation prediction curve. That is, charging is performed along a power generation prediction curve set in stages until time t12, and after time t12, the difference obtained by subtracting the output value of the photovoltaic power generation device from the planned value for constant power flow control is the discharge amount. Become. The control unit 14 performs the daily charge / discharge control along the preset power generation prediction curve. That is, charging is performed along a power generation prediction curve set in stages until time t12, and after time t12, the difference obtained by subtracting the output. value of the photovoltaic power generation device from the planned value for constant power flow control is the discharge amount. Become.

この実施例2においても、実施例1と同様の効果を有するが、その他、時刻t12直前における太陽光ピーク曲線アと運転計画曲線イとの高さ方向の間隔部分にまで発生する電力波形のひげ部分は、その出力に相当(ひげの大きさ)する出力を有する太陽光発電装置を部分的に電力系統から解列(S22で)することで、ひげ取りを実施している。このため、電力貯蔵部の容量は、その分だけ小さくすることができる。
また、時刻t12前後での時間幅がやや大きく設定されたことにより、設定されたピーク値以上の太陽光発電装置による出力のひげが発生したとき、太陽光発電池群を部分的に解列することによりひげ取の範囲が拡大でき、需要と供給の時間的ミスマッチを解消して間欠的なエネルギーの安定化を図ることが可能となる。 In addition, when the time width around time t12 is set to be slightly large and the output whiskers of the photovoltaic power generation device exceeding the set peak value occur, the photovoltaic battery group is partially disconnected. As a result, the range of beard removal can be expanded, the time mismatch between supply and demand can be eliminated, and intermittent energy stabilization can be achieved. The second embodiment also has the same effect as the first embodiment. In addition, the whisker of the power waveform generated up to the interval portion in the height direction between the solar peak curve a and the operation plan curve a just before time t12. The portion performs bearding by partially disconnecting (at S22) the photovoltaic power generation apparatus having an output corresponding to the output (the size of the whiskers) from the power system. For this reason, the capacity | capacitance of an electric power storage part can be made small by that much. The second embodiment also has the same effect as the first embodiment. In addition, the whisker of the power waveform generated up to the interval portion in the height direction between the solar peak curve a and the operation plan curve a just before time t12. portion performs bearding by partially disconnecting (at S22) the photosensitive power generation apparatus having an output corresponding to the output (the size of the whiskers) from the power system. For this reason, the capacity | capacitance of an electric power storage part can be made small by that much.
Moreover, when the whisker of the output by the solar power generation device exceeding the set peak value is generated due to the time width around time t12 being set slightly larger, the solar battery group is partially disconnected. As a result, the range of shaving can be expanded, and it is possible to eliminate the time mismatch between supply and demand and to stabilize intermittent energy. Moreover, when the whisker of the output by the solar power generation device exceeding the set peak value is generated due to the time width around time t12 being set slightly larger, the solar battery group is partially disconnected. As a result, the range of shaving. can be expanded, and it is possible to eliminate the time mismatch between supply and demand and to stabilize intermittent energy.

この実施例は、図1で示すような複数の太陽光発電装置を有する分散電源系統の最適運転を支援するためのもので、実施例1,2において制御目標に最も近い太陽電池群を選択して最適化運転を可能とした台数運転制御方法を提供するものである。
図5で示す潮流一定制御における発電量の出力計画は、快晴時による線アに基づくものであるが、快晴時以外の該当日の発電量には計画曲線の内外に渡って変動する電力波形のひげが発生する。 The output plan of the amount of power generation in the constant power flow control shown in FIG. 5 is based on the line A in fine weather, but the amount of power generation in the corresponding day other than in fine weather has a power waveform that fluctuates inside and outside the plan curve. A beard develops. このひげ取りを、より精度よく台数運転制御を実施するためには、精度の良い発電量の予測が必要となる。 In order to carry out the unit operation control more accurately for this whiskers, it is necessary to accurately predict the amount of power generation. 以下は、その予測法について説明する。 The prediction method will be described below. This embodiment is for supporting the optimum operation of the distributed power supply system having a plurality of photovoltaic power generation devices as shown in FIG. 1, and selects the solar cell group closest to the control target in the first and second embodiments. This provides a unit operation control method that enables optimized operation. This embodiment is for supporting the optimum operation of the distributed power supply system having a plurality of photovoltaic power generation devices as shown in FIG. 1, and selects the solar cell group closest to the control target in the first and second embodiments. This provides a unit operation control method that enables optimized operation.
The power generation output plan in the constant power flow control shown in FIG. 5 is based on a line during a clear day, but the power generation amount on a corresponding day other than the clear day has a power waveform that fluctuates across the plan curve. A beard occurs. In order to perform the unit operation control with higher accuracy in this shaving, it is necessary to accurately predict the power generation amount. The prediction method will be described below. The power generation output plan in the constant power flow control shown in FIG. 5 is based on a line during a clear day, but the power generation amount on a corresponding day other than the clear day has a power waveform that fluctuates across the plan curve A beard occurs. In order to perform the unit operation control with higher accuracy in this shaving, it is necessary to accurately predict the power generation amount. The prediction method will be described below.

なお、以下の説明では、便宜上太陽電池群1,2をメガソーラ(ソーラファーム、ソーラパーク)のような広域に太陽光パネルを施設し、所定面積のメッシュで切り分けられた区分単位で系統との接続/解列(オン/オフ)が可能なモデルを採用した場合について説明する。しかし、本発明は、メッシュに区切られた範囲の制御単位、太陽光パネルの種類に左右されず、市街地など、複数の小規模太陽光発電装置を集中管理し系統安定化を図る際にも応用できることは勿論である。   In the following description, for convenience, the solar cell groups 1 and 2 are provided with solar panels in a wide area such as a mega solar (solar farm, solar park), and connected to the grid in units divided by a mesh of a predetermined area. The case where a model that can be / disconnected (on / off) is adopted will be described. However, the present invention does not depend on the control unit in the range divided into meshes or the type of solar panel, and is also applied to centralized management of a plurality of small-scale photovoltaic power generation devices such as urban areas to stabilize the system. Of course you can.

図6及び図7はメッシュ区分された太陽電池群1,2の例を示したもので、メッシュ内の太陽光発電パネルの面積と種別に基づく初期データとして与える。この初期データはメッシュ内の太陽電池の発電能力(パネル面積と変換効率から算出が可能)で、各メッシュの日照強度と日照量の計算から容易に出来る。その算出値を用いて、照度の推移を日照量予想に利用することが可能となる。
また、メッシュ区分で2つ以上の区分にまたがるパネルを持つ太陽光発電装置については、物理的にメッシュ区域から逸脱して面積が相対的に大きくなっても、日照強度と日照量に換算するときは、パネル面積で割るので計算値に影響はないので、一箇所のメッシュ区分に強制収用することで解決が可能である。 In addition, for photovoltaic power generation equipment that has panels that span two or more divisions in the mesh division, even if the area physically deviates from the mesh area and the area becomes relatively large, when converting to sunshine intensity and amount of sunshine. Since is divided by the panel area, it does not affect the calculated value, so it can be solved by forcibly expropriating it into one mesh division. FIGS. 6 and 7 show examples of the solar cell groups 1 and 2 divided into meshes, and are given as initial data based on the area and type of the photovoltaic power generation panel in the mesh. This initial data is the power generation capacity of the solar cells in the mesh (can be calculated from the panel area and conversion efficiency) and can be easily calculated from the sunshine intensity and amount of sunshine of each mesh. Using the calculated value, the change in illuminance can be used for estimating the amount of sunlight. FIGS. 6 and 7 show examples of the solar cell groups 1 and 2 divided into meshes, and are given as initial data based on the area and type of the photovoltaic power generation panel in the mesh. This initial data is the power generation capacity of The solar cells in the mesh (can be calculated from the panel area and conversion efficiency) and can be easily calculated from the sunshine intensity and amount of sunshine of each mesh. Using the calculated value, the change in illuminance can be used for estimating the amount of sunlight.
In addition, for photovoltaic power generation devices that have panels that span two or more sections in the mesh section, even when the area is relatively large and deviates physically from the mesh section, when converting to sunlight intensity and amount of sunlight Since it is divided by the panel area, there is no effect on the calculated value, so it can be solved by forcibly excluding it into one mesh section. In addition, for photovoltaic power generation devices that have panels that span two or more sections in the mesh section, even when the area is relatively large and deviates physically from the mesh section, when converting to sunlight intensity and amount of sunlight Since it is divided by the panel area, there is no effect on the calculated value, so it can be solved by forcibly excluding it into one mesh section.

市街地の家屋に設置された太陽光発電の電力は、その家屋の需要をまず満たすために使われることが多いが、この場合、負荷と発電量の計量を別々に行えば、以下で示す本実施例の技術の適用は可能である。
発電量の予測は、太陽光発電の計量結果を用い、複数の太陽光発電装置のオン/オフ制御時の装置選択に利用する各装置の発電量の見込みは、負荷予測の電力量を差し引いたものを使う。 The power generation amount is predicted using the measurement result of photovoltaic power generation, and the estimated power generation amount of each device used for device selection at the time of on / off control of multiple photovoltaic power generation devices is obtained by subtracting the power amount of the load prediction. Use things. 各戸の負荷予測は過去の蓄積データに、気象や曜日、日時のパラメータを用いて、ニューロネットワーク技術やカオス技術を利用して計算が可能である。 The load prediction of each house can be calculated by using the parameters of weather, day of the week, date and time, and using neuro-network technology and chaos technology in the past accumulated data. 以下具体的に説明する。 This will be described in detail below. In many cases, the photovoltaic power installed in urban houses is used to satisfy the demand of the house. In this case, if the load and power generation are measured separately, the implementation shown below Application of the example technique is possible. In this case, if the load and power generation are measured separately, the implementation shown below Application of the example technique is possible. In many cases, the photovoltaic power installed in urban houses is used to satisfy the demand of the house.
The prediction of power generation amount uses the measurement result of solar power generation, and the power generation amount of each device used for device selection at the time of on / off control of multiple solar power generation devices is deducted from the load prediction power amount Use things. The load prediction of each house can be calculated using the neuro network technology and chaos technology using the parameters of weather, day of the week, and date / time on the past accumulated data. This will be specifically described below. The prediction of power generation amount uses the measurement result of solar power generation, and the power generation amount of each device used for device selection at the time of on / off control of multiple solar power generation devices is deducted from the load prediction power amount Use This will be specifically described below. The load prediction of each house can be calculated using the neuro network technology and chaos technology using the parameters of weather, day of the week, and date / time on the past accumulated data.

太陽電池群1,2に対して、メッシュで区切られた発電単位を前提として、次のような手順に従う。
(1)単位時間後のメッシュ内での発電量を予測する。
(2)電力貯蔵装置と複数の太陽光発電装置の最適運転計画を作成する。

(3)運転計画に従って、個々の装置を制御する。 (3) Control each device according to the operation plan.
(4)上記(1)から(3)を繰り返す。 (4) Repeat steps (1) to (3) above.
それぞれについて、以下のように展開する。 For each, develop as follows. For solar cell groups 1 and 2, the following procedure is followed on the premise of power generation units separated by a mesh. For solar cell groups 1 and 2, the following procedure is followed on the premise of power generation units separated by a mesh.
(1) Predict the power generation amount in the mesh after unit time. (1) Predict the power generation amount in the mesh after unit time.
(2) Create an optimal operation plan for the power storage device and the plurality of photovoltaic power generation devices. (2) Create an optimal operation plan for the power storage device and the plurality of photovoltaic power generation devices.
(3) Control each device according to the operation plan. (3) Control each device according to the operation plan.
(4) Repeat (1) to (3) above. (4) Repeat (1) to (3) above.
Each is expanded as follows. Each is expanded as follows.

(1)の単位時間後のメッシュ内での発電量については次のように予測する。
a,単位時間をさらに刻み、短周期の計測幅を持たす。
b,短周期の時間単位での個々の太陽電池の発電量を計測する。

c,個々の太陽電池のパネル効率と面積、短周期の計測時間から日射強度を算出する。 c. Calculate the solar radiation intensity from the panel efficiency and area of ​​each solar cell and the short cycle measurement time.
d,図8で示すように、メッシュの中心をx、y方向に1メッシュずつ過去データをシフトし、これをaで設定された短周期の時間単位分、n回繰り返すe,2つのデータ(図9のM1とM2)の最大相関関数を算出する。 d, As shown in FIG. 8, the past data is shifted by 1 mesh in the x and y directions at the center of the mesh, and this is repeated n times for the short period time unit set in a, e, 2 data (2 data ( The maximum correlation function of M1 and M2) in FIG. 9 is calculated.
f,図9で示すように、最大相関係数とメッシュ間の距離、すなわち、M1からM2にまで移動した距離から、風向と風力を決定する。 f, As shown in FIG. 9, the wind direction and the wind force are determined from the maximum correlation coefficient and the distance between the meshes, that is, the distance traveled from M1 to M2. このとき、日本では雲に影響を与える風として西向き、40km/hが一般的なので、設置当初はこれをベースに相関関係のデータ探索を行うと検索の高速化が実現できる。 At this time, in Japan, the wind that affects clouds is generally westward and 40 km / h, so if you search for correlation data based on this at the beginning of installation, you can speed up the search. この相関関係によって導いた風力と風向はデータとして蓄積し、その傾向と蓄積データをベースにニューロネットワーク技術やカオス技術を応用した相関関係のデータ探索を行うと以後の検索の高速化が実現できる。 The wind power and wind direction derived from this correlation are accumulated as data, and if the correlation data search is performed by applying neuro-network technology or chaos technology based on the tendency and accumulated data, the subsequent search speed can be realized. About the electric power generation amount in the mesh after the unit time of (1), it estimates as follows. About the electric power generation amount in the mesh after the unit time of (1), it estimates as follows.
a, further divide the unit time and have a short period measurement width. a, further divide the unit time and have a short period measurement width.
b. Measure the power generation amount of each solar cell in a short cycle time unit. b. Measure the power generation amount of each solar cell in a short cycle time unit.
c. The solar radiation intensity is calculated from the panel efficiency and area of each solar cell and the short period measurement time. c. The solar radiation intensity is calculated from the panel efficiency and area of ​​each solar cell and the short period measurement time.
d, as shown in FIG. 8, the past data is shifted by one mesh in the x and y directions at the center of the mesh, and this is repeated n times for the short period time unit set by a. e, two data ( The maximum correlation function of M1 and M2) in FIG. 9 is calculated. d, as shown in FIG. 8, the past data is correlated by one mesh in the x and y directions at the center of the mesh, and this is repeated n times for the short period time unit set by a. E, two data (The maximum correlation function of M1 and M2) in FIG. 9 is calculated.
f, As shown in FIG. 9, the wind direction and the wind force are determined from the maximum correlation coefficient and the distance between the meshes, that is, the distance moved from M1 to M2. At this time, in Japan, 40km / h is generally the west-facing wind that affects the clouds, so if you search for correlation data based on this, you can speed up the search. The wind speed and wind direction derived from this correlation are accumulated as data, and if the correlation data search is applied based on the trend and accumulated data, applying the neural network technology or chaos technology, the subsequent search can be speeded up. f, As shown in FIG. 9, the wind direction and the wind force are determined from the maximum correlation coefficient and the distance between the meshes, that is, the distance moved from M1 to M2. At this time, in Japan, 40km / h is generally the west-facing wind that affects the clouds, so if you search for correlation data based on this, you can speed up the search. The wind speed and wind direction derived from this correlation are accumulated as data, and if the correlation data search is applied based on the trend and accumulated data, applying the neural network technology or chaos technology, the subsequent search can be speeded up.

ただし、bからfまでの処理は、メディアからの気象予測や、気象観測機器による観測データ(風力計、風速計、温度計、湿度計、照度計の観測値)を利用して雲の高度の風速に換算しなおして算出する手段で代替ができる。
g,短周期計測の差分結果より日射変動成分を取り出す。この成分は微分成分となる。
h,雲の動きが、各メッシュの日射強度に直接影響するので、次の隣接したメッシュに、同じ雲が影響を与える時間と方向を算出する。風上側のメッシュが解列しており、日照データが得られないときは、さらに上流の日照データを用いる。下流のデータがあるときは2者を比べてその中間値を採用する。
i,gとhの結果を当初の単位時間分について、図10で示すように風上側から繰り返し積算することで、最大日射強度と、最小日射強度から最大日射変動幅を得て単位時間分の日射量を得る。 By repeatedly integrating the results of i, g, and h from the windward side as shown in FIG. 10 for the initial unit time, the maximum solar radiation intensity and the maximum solar radiation fluctuation range are obtained from the minimum solar radiation intensity for the unit time. Get the amount of solar radiation.
j,図10は、1メッシュ毎の風の移動時間の態様を示したもので、最も風上のメッシュ列の上部2段(矢印表示のない部分)については日射量の算出が出来ないので、前回値を用いる。 j, FIG. 10 shows the mode of the wind movement time for each mesh, and the amount of solar radiation cannot be calculated for the upper two steps (the part without the arrow display) of the most upwind mesh row. Use the previous value. 計測した変動成分より一次近似して算出することも可能。 It is also possible to calculate by first-order approximation from the measured fluctuation component. 一般に天候が安定しているときは近似式から算出したほうが有効なので、快晴時は近似式から算出し、それ以外は前回値を利用することが考えられる。 Generally, when the weather is stable, it is more effective to calculate from the approximate formula, so it is conceivable to calculate from the approximate formula when the weather is fine and use the previous value in other cases. これは、魚眼カメラやレーザ光観測などを利用した気象予測から、高い精度で得ることで代替が可能である。 This can be replaced by obtaining it with high accuracy from weather prediction using a fisheye camera or laser light observation.
k,日射量に個々のメッシュで持つ太陽光発電装置の発電効率と面積をかけて、発電量と最大発電変動幅の予測値を得る。 k, Multiply the amount of solar radiation by the power generation efficiency and area of ​​the photovoltaic power generation equipment of each mesh to obtain the predicted values ​​of the amount of power generation and the maximum power generation fluctuation range. 風上からの実発電実績に基づいて計算した予測値は、高い正確さが期待できる。 The predicted value calculated based on the actual power generation from the windward can be expected to be highly accurate. However, the processing from b to f uses the weather forecast from the media and the observation data (observed values of anemometer, anemometer, thermometer, hygrometer, illuminometer) from the meteorological observation equipment. It can be replaced by means of recalculating the wind speed. However, the processing from b to f uses the weather forecast from the media and the observation data (observed values ​​of anemometer, anemometer, thermometer, hygrometer, illuminometer) from the meteorological observation equipment. It can be replaced by means of recalculating the anemometer. ..
g. Extract solar radiation fluctuation component from the difference result of short cycle measurement. This component is a differential component. g. Extract solar radiation fluctuation component from the difference result of short cycle measurement. This component is a differential component.
h, Since the movement of the cloud directly affects the solar radiation intensity of each mesh, the time and direction in which the same cloud affects the next adjacent mesh is calculated. When the windward mesh is disconnected and sunshine data cannot be obtained, the sunshine data further upstream is used. When there is downstream data, the two values are compared and the intermediate value is adopted. h, Since the movement of the cloud directly affects the solar radiation intensity of each mesh, the time and direction in which the same cloud affects the next adjacent mesh is calculated. When the windward mesh is disconnected and sunshine data cannot be obtained, the sunshine data further upstream is used. When there is downstream data, the two values ​​are compared and the intermediate value is adopted.
As shown in FIG. 10, the results of i, g, and h are repeatedly accumulated from the windward side as shown in FIG. 10 to obtain the maximum solar radiation intensity and the maximum solar radiation fluctuation range from the minimum solar radiation intensity. Get solar radiation. As shown in FIG. 10, the results of i, g, and h are repeatedly accumulated from the windward side as shown in FIG. 10 to obtain the maximum solar radiation intensity and the maximum solar radiation fluctuation range from the minimum solar radiation intensity. Get solar radiation.
j, FIG. 10 shows an aspect of wind moving time for each mesh, and the solar radiation amount cannot be calculated for the upper two steps of the most upwind mesh row (the portion without the arrow display). Use the previous value. It is also possible to calculate by linear approximation from the measured fluctuation component. In general, when the weather is stable, it is more effective to calculate from the approximate expression, so it is possible to calculate from the approximate expression when the weather is fine, and use the previous value otherwise. This can be replaced by obtaining it with high accuracy from weather prediction using a fish-eye camera or laser light observation. j, FIG. 10 shows an aspect of wind moving time for each mesh, and the solar radiation amount cannot be calculated for the upper two steps of the most upwind mesh row (the portion without the arrow display). Use the previous value. It In general, when the weather is stable, it is more effective to calculate from the approximate expression, so it is possible to calculate from the approximate expression when the weather is fine, is also possible to calculate by linear approximation from the measured fluctuation component. And use the previous value otherwise. This can be replaced by obtaining it with high accuracy from weather prediction using a fish-eye camera or laser light observation.
k, the amount of solar radiation is multiplied by the power generation efficiency and area of the solar power generation device in each mesh, and a predicted value of the power generation amount and the maximum power generation fluctuation range is obtained. The predicted value calculated based on the actual power generation from the windward can be expected to be highly accurate. k, the amount of solar radiation is multiplied by the power generation efficiency and area of ​​the solar power generation device in each mesh, and a predicted value of the power generation amount and the maximum power generation fluctuation range is obtained. The predicted value calculated based on the actual power generation from the windward can be expected to be highly accurate.

(2)の電力貯蔵装置と複数の太陽光発電装置の最適運転計画は次のようにして作成する。 The optimum operation plan for the power storage device (2) and the plurality of photovoltaic power generation devices is created as follows.

<目標関数について>
(a)単位時間当たりの潮流変動幅を全太陽光発電装置(分散電源系統の全発電機の場合もある)の定格出力の合計のa%以下にする。 (A) Set the tidal current fluctuation range per unit time to a% or less of the total rated output of all photovoltaic power generators (which may be all generators of distributed power generation systems).
(b)複数の単位時間をまたがっての平均の潮流変動幅を全太陽光発電装置(分散電源系統の全発電機の場合もある)の定格出力の合計のb%以下にする。 (B) Set the average tidal current fluctuation range over a plurality of unit times to b% or less of the total rated output of all photovoltaic power generators (which may be all generators of distributed power generation systems).
(c)経済的に最良の運転を選択する。 (C) Select the best economical operation.
(d)安定運転に最良の選択をする。 (D) Make the best choice for stable operation.
(e)系統に対して最良の運転を選択する。 (E) Select the best operation for the system.
などが条件としてあり、優先度によってそれぞれの関数に重みを与え、最終的に一次の不等式で表現する。 Etc. are conditions, and each function is weighted according to the priority, and finally expressed by a linear inequality. <About the target function> <About the target function>
(A) The tidal current fluctuation width per unit time is set to a% or less of the total rated output of all photovoltaic power generation devices (which may be all generators of a distributed power system). (A) The tidal current fluctuation width per unit time is set to a% or less of the total rated output of all photovoltaic power generation devices (which may be all generators of a distributed power system).
(B) The average tidal current fluctuation width over a plurality of unit times is set to be not more than b% of the total rated output of all photovoltaic power generation devices (which may be all generators of a distributed power system). (B) The average tidal current fluctuation width over a plurality of unit times is set to be not more than b% of the total rated output of all photovoltaic power generation devices (which may be all generators of a distributed power system).
(C) Select the best operation economically. (C) Select the best operation efficiently.
(D) Make the best choice for stable operation. (D) Make the best choice for stable operation.
(E) Select the best operation for the system. (E) Select the best operation for the system.
Is given as a condition, and each function is given a weight according to the priority, and finally expressed by a linear inequality. Is given as a condition, and each function is given a weight according to the priority, and finally expressed by a linear inequality.

<入力パラメータについて>
このときの入力パラメータとしては、

(f)メッシュごとの次の単位時間(例:1分間)発電量と最大発電変動幅の予測と、予測変動幅(風上が最大で、風下につれて小さくなる。また、天候の安定度によって値が変化する…快晴時は最小、雨天時、晴天時、曇天時がそれに続く) (F) Prediction of the next unit time (example: 1 minute) of the amount of power generation and the maximum power generation fluctuation range for each mesh, and the predicted fluctuation range (the windward is the maximum, and it becomes smaller as the leeward side. Changes ... Minimum in fine weather, followed by rainy weather, fine weather, and cloudy weather)
(g)複数の単位時間(例:20分間、30分間、1時間)をまたがっての平均の全出力電力量目標値(h)電力貯蔵部の残量(蓄電池残量) (G) Average total output power amount target value over a plurality of unit times (example: 20 minutes, 30 minutes, 1 hour) (h) Remaining amount of power storage unit (remaining amount of storage battery)
がある。 There is. <About input parameters> <About input parameters>
As input parameters at this time, As input parameters at this time,
(F) Prediction of power generation amount and maximum power generation fluctuation range for the next unit time (for example, 1 minute) for each mesh, and predicted fluctuation width (maximum windward and decreases with leeward. Will change ... Minimum in fine weather, followed by rainy weather, fine weather, and cloudy weather) (F) Prediction of power generation amount and maximum power generation fluctuation range for the next unit time (for example, 1 minute) for each mesh, and predicted fluctuation width (maximum windward and decreases with leeward. Will change ... Minimum in fine weather, followed by rainy weather, fine weather, and cloudy weather)
(G) Average total output power target value across multiple unit times (eg, 20 minutes, 30 minutes, 1 hour) (h) Remaining battery capacity (remaining battery capacity) (G) Average total output power target value across multiple unit times (eg, 20 minutes, 30 minutes, 1 hour) (h) Remaining battery capacity (remaining battery capacity)
There is. There is.

<制約条件について>
制約条件としては、
(i)太陽光発電装置の電力コスト(売電コスト、買電コスト)
(j)運転逸脱時のペナルティ(コスト換算したもの)
(k)電力貯蔵部の残量と充放電サイクルコスト(充放電サイクル周期、充放電カウントをする深度、及び充放電サイクル寿命)
(l)電力貯蔵部の運転戦略・予備分を加味した充放電限界値の設定…これには、全システムの停止、充放電サイクルを最初から繰り返すなどの上下限値を超えたときのシステムの振る舞いも定めておく。

・充放電切替方針…回数、切替回数を加算する充放電深度、リセットタイミング。・ Charge / discharge switching policy: Charge / discharge depth and reset timing to add the number of times and the number of switchings.
・目標潮流まで全力で追従/許容潮流まで追従したら止める。・ Follow the target tide with full power / Stop when following the allowable tide.
上記の目標関数、入力パラメータ、制約条件から、その後の単位時間(例:1分間)の電力貯蔵部の充電量/放電量、太陽電池群(太陽光発電装置)の解列/接続を求め、運転計画を作成する。 From the above target function, input parameters, and constraints, find the charge / discharge amount of the power storage unit for the subsequent unit time (example: 1 minute), and the disconnection / connection of the solar cell group (photovoltaic power generation device). Create an operation plan. <About constraints> <About constraints>
As a constraint condition, As a constraint condition,
(I) Power cost of solar power generation equipment (power selling cost, power purchasing cost) (I) Power cost of solar power generation equipment (power selling cost, power purchasing cost)
(J) Penalty for driving deviation (cost conversion) (J) Penalty for driving deviation (cost conversion)
(K) Remaining power storage unit charge / discharge cycle cost (charge / discharge cycle period, depth for charge / discharge count, and charge / discharge cycle life) (K) Remaining power storage unit charge / discharge cycle cost (charge / discharge cycle period, depth for charge / discharge count, and charge / discharge cycle life)
(L) Setting of charge / discharge limit value considering operation strategy / preliminary part of power storage unit ... This includes system shutdown when the upper and lower limit values are exceeded, such as stopping all systems and repeating charge / discharge cycles from the beginning. Also determine the behavior. (L) Setting of charge / discharge limit value considering operation strategy / preliminary part of power storage unit ... This includes system shutdown when the upper and lower limit values ​​are exceeded, such as stopping all systems and repeating charge / discharge cycles from the beginning. Also determine the behavior.
Charge / discharge switching policy: Number of times, charge / discharge depth to which the number of times of switching is added, and reset timing. Charge / discharge switching policy: Number of times, charge / discharge depth to which the number of times of switching is added, and reset timing.
・ Follow the target tide with full power / stop after following the allowable tide.・ Follow the target tide with full power / stop after following the allowable tide.
From the above target function, input parameters, and constraint conditions, the amount of charge / discharge of the power storage unit for the subsequent unit time (eg, 1 minute), the disconnection / connection of the solar cell group (solar power generation device) are obtained, Create an operation plan. From the above target function, input parameters, and constraint conditions, the amount of charge / discharge of the power storage unit for the subsequent unit time (eg, 1 minute), the disconnection / connection of the solar cell group (solar power generation device) ) are obtained, Create an operation plan.

この実施例によれば、太陽電池群(太陽光発電装置)を複数台に分散させ、かつ広域に配置させ、変動に対する制御の予備容量を確保することにより、広域化による日射強度の多様性からくる太陽光発電装置の発電量の平準化が図ると同時に、変動吸収を複数の太陽電池群のオン/オフ機能を持たせることで、系統への信頼性・品質・経済性の向上を実現する。
また、単位時間(例:1分単位)の出力予測を行い、短時間の変動に対して、他の発電機だけでなく、太陽光発電装置の部分的な解列(OFF)によって、その時点で最適な大容量の制御を短時間に行うことが可能となるものである。 In addition, the output is predicted for a unit time (example: 1 minute unit), and for short-term fluctuations, not only other generators but also the partial disconnection (OFF) of the photovoltaic power generation equipment at that time It is possible to perform optimum large-capacity control in a short time. According to this embodiment, solar cell groups (photovoltaic power generation devices) are dispersed in a plurality of units and arranged in a wide area, and a reserve capacity for control against fluctuations is secured, thereby diversifying solar radiation intensity due to wide area. At the same time as the level of power generation of the coming solar power generation system, it is possible to improve the reliability, quality, and economic efficiency of the system by providing on / off function of multiple solar cell groups for fluctuation absorption . According to this embodiment, solar cell groups (photovoltaic power generation devices) are dispersed in a plurality of units and arranged in a wide area, and a reserve capacity for control against fluctuations is secured, thereby diversifying solar radiation intensity due to wide area. the same time as the level of power generation of the coming solar power generation system, it is possible to improve the reliability, quality, and economic efficiency of the system by providing on / off function of multiple solar cell groups for fluctuation absorption.
Moreover, the output prediction of unit time (example: 1 minute unit) is performed, and the short-term fluctuation is not limited to other generators, but by the partial disconnection (OFF) of the photovoltaic power generator, Therefore, it is possible to perform optimum large-capacity control in a short time. Moreover, the output prediction of unit time (example: 1 minute unit) is performed, and the short-term fluctuation is not limited to other generators, but by the partial disconnection (OFF) of the photovoltaic power generator, therefore, it is possible to perform optimum large-capacity control in a short time.

さらに、高価な気象用観測器具なしで、太陽光発電の短期間予測に必要な風向・風力の値を計算でき、且つ風上からの実発電実績に基づいて計算した予測値は、高い正確さが期待できる。
太陽光発電装置はパネルの種類でさまざまな特性があるが、それらが混在していても可能な制御方式である。 Photovoltaic power generation equipment has various characteristics depending on the type of panel, but it is a control method that is possible even if they are mixed. また、電力貯蔵部はさまざまな特性を持ち、最適な運転モデルはないが、この実施例3による制約条件の書き換えだけで、多種類の電力貯蔵装置に最適な運転モデルの提供が可能となり、しかも、高価な電力貯蔵部の必要容量を減らすことができるものである。 Further, the power storage unit has various characteristics and there is no optimum operation model, but it is possible to provide the optimum operation model for various types of power storage devices only by rewriting the constraint conditions according to the third embodiment. , It is possible to reduce the required capacity of an expensive power storage unit. Furthermore, it is possible to calculate wind direction and wind power values necessary for short-term prediction of photovoltaic power generation without expensive weather observation equipment, and the predicted values calculated based on actual power generation from the windward are highly accurate. Can be expected. Furthermore, it is possible to calculate wind direction and wind power values ​​necessary for short-term prediction of photovoltaic power generation without expensive weather observation equipment, and the predicted values ​​calculated based on actual power generation from the windward are highly accurate. Can be expected.
Photovoltaic power generation devices have various characteristics depending on the type of panel, but they are possible control methods even if they are mixed. In addition, the power storage unit has various characteristics and there is no optimal operation model, but it is possible to provide an optimal operation model for various types of power storage devices by only rewriting the constraint conditions according to the third embodiment. The required capacity of the expensive power storage unit can be reduced. Photovoltaic power generation devices have various characteristics depending on the type of panel, but they are possible control methods even if they are mixed. In addition, the power storage unit has various characteristics and there is no optimal operation model, but it is possible to provide an optimal operation model for various types of power storage devices by only rewriting the constraint conditions according to the third embodiment. The required capacity of the expensive power storage unit can be reduced.

なお、上記実施例では、運転計画曲線の作成は1日1回の充放電サイクルについて説明したが、これは切替え回数を出来る限り抑制して高価な電力貯蔵部の寿命を延ばすことを意図したもので、電力貯蔵部が、例えば、電気二重層キャパシタの場合には複数サイクルでもよいことは勿論である。また、電力貯蔵部を電気二重層キャパシタで構成した場合でも、本発明を採用することで、その容量を減らすことが可能となる。   In the above embodiment, the creation of the operation plan curve has been described for the charge / discharge cycle once a day. This is intended to extend the life of the expensive power storage unit by suppressing the number of switching as much as possible. Of course, when the power storage unit is, for example, an electric double layer capacitor, a plurality of cycles may be used. Further, even when the power storage unit is configured by an electric double layer capacitor, the capacity can be reduced by adopting the present invention.

本発明の実施形態を示す太陽光発電システムの構成図。 The block diagram of the solar energy power generation system which shows embodiment of this invention. 本発明による充放電制御のフローチャート。 The flowchart of the charging / discharging control by this invention. 説明のための発電量−電力貯蔵量の運転関係図。 Operation relationship diagram of power generation amount-power storage amount for explanation. 本発明による他の充放電制御のフローチャート。 The flowchart of other charging / discharging control by this invention. 説明のための充放電運転計画図。 Charge / discharge operation plan diagram for explanation. 太陽電池群の説明図。 Explanatory drawing of a solar cell group. 太陽電池群の説明図。 Explanatory drawing of a solar cell group. 発電量予測時に用いられる太陽電池のメッシュ説明図。 The mesh explanatory drawing of the solar cell used at the time of electric power generation amount prediction. 発電量予測時に用いられる太陽電池のメッシュ説明図。 The mesh explanatory drawing of the solar cell used at the time of electric power generation amount prediction. 発電量予測時に用いられる太陽電池のメッシュ説明図。 The mesh explanatory drawing of the solar cell used at the time of electric power generation amount prediction. 説明のための発電量−電力貯蔵量の運転関係図。 Operation relationship diagram of power generation amount-power storage amount for explanation. 太陽光発電システムの構成図。 The block diagram of a solar power generation system. 需給制御の概略説明図。 Schematic explanatory drawing of supply and demand control. 発電量の特性図。 The characteristic figure of the electric power generation amount.

符号の説明Explanation of symbols

1… 第1の太陽電池群
2… 第2の太陽電池群
3… 第1のパワーコンデショナー
4… 第2のパワーコンデショナー
5… 変圧器
6… 変圧器
7… 太陽光発電システム変電所
8… 母線
9… 電力会社変電所
10… 安定化装置
11… 電力貯蔵部
12… 電力変換部
13… 連系変圧器
14… 制御部
DESCRIPTION OF SYMBOLS 1 ... 1st solar cell group 2 ... 2nd solar cell group 3 ... 1st power conditioner 4 ... 2nd power conditioner 5 ... Transformer 6 ... Transformer 7 ... Solar power generation system substation 8 ... Bus 9 Power company substation 10 Stabilization device 11 Power storage unit 12 Power conversion unit 13 Interconnection transformer 14 Control unit

Claims (10)

  1. 太陽電池群よりなる太陽光発電装置と、電力貯蔵部と電力変換部を有する安定化装置を電力系統に接続し、安定化装置の制御部を介して電力変換部に対する制御を実行し、電力貯蔵部への充放電制御を行うように構成した太陽光発電システムにおいて、
    前記太陽光発電装置を通常運転用と予備用に分けると共に、前記制御部には、予め作成された太陽光発電装置の発電開始時間から発電終了時間までの発電量のピーク曲線と前記電力貯蔵部に対する充放電の運転計画曲線を記憶させ、発電開始時間から発電終了時間での充電中で、前記充電運転計画曲線に基づく充電値よりも発電出力量が大きい時の余剰分を充電し、発電出力量が計画充電値よりも少ない時には前記予備用の太陽発電装置を電力系統に接続し、前記電力貯蔵部が所定値充電量となった時には放電モードに切替え、且つ前記発電開始時間から発電終了時間での非充電時のときには前記ピーク曲線に沿って放電し、全放電終了時には電力系統に接続された太陽光発電装置を解列する制御を、発電開始時間から発電終了時間まで定周期で繰り返し行うことを特徴とした太陽光発電システムの制御方法。 The photovoltaic power generation device is divided into a normal operation device and a spare one, and the control unit has a peak curve of the amount of power generation from the power generation start time to the power generation end time of the photovoltaic power generation device created in advance and the power storage unit. The operation plan curve of charge and discharge is memorized, and the surplus when the power generation output amount is larger than the charge value based on the charge operation plan curve during charging from the power generation start time to the power generation end time is charged to generate power. When the power is less than the planned charge value, the spare photovoltaic power generation device is connected to the power system, and when the power storage unit reaches the predetermined charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time. When not charged in, the photovoltaic power generation device is discharged along the peak curve, and when the entire discharge is completed, the control of disconnecting the photovoltaic power generation device connected to the power system is repeated at regular intervals from the power generation start time to the power generation end time. A method of controlling a photovoltaic power generation system, which is characterized by this. A photovoltaic power generation device composed of a group of solar cells and a stabilization device having a power storage unit and a power conversion unit are connected to the power system, and control is performed on the power conversion unit via the control unit of the stabilization device to store power. In the photovoltaic power generation system configured to perform charge / discharge control to the unit, A photovoltaic power generation device composed of a group of solar cells and a stabilization device having a power storage unit and a power conversion unit are connected to the power system, and control is performed on the power conversion unit via the control unit of the stabilization device to store power. In the photovoltaic power generation system configured to perform charge / discharge control to the unit,
    The solar power generation device is divided into a normal operation and a standby one, and the control unit includes a peak curve of power generation amount from a power generation start time to a power generation end time of the solar power generation device created in advance and the power storage unit. The charging / discharging operation plan curve is stored, the surplus when the power generation output amount is larger than the charge value based on the charging operation plan curve during charging from the power generation start time to the power generation end time, When the power is smaller than the planned charge value, the spare solar power generation device is connected to the power system, and when the power storage unit reaches a predetermined value charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time When the battery is not charged at the time of non-charging, control is performed from the power g The solar power generation device is divided into a normal operation and a standby one, and the control unit includes a peak curve of power generation amount from a power generation start time to a power generation end time of the solar power generation device created in advance and The power storage unit. The charging / electrically operating plan curve is stored, the surplus when the power generation output amount is larger than the charge value based on the charging operation plan curve during charging from the power generation start time to the power generation end time , When the power is smaller than the planned charge value, the spare solar power generation device is connected to the power system, and when the power storage unit reaches a predetermined value charge amount, the mode is switched to the discharge mode, and the power generation start time to the power generation end time When the battery is not charged at the time of non-charging, control is performed from the power g eneration start time to the power generation end time. Repetition control method for a photovoltaic power generation system characterized by performing in. eneration start time to the power generation end time. Repetition control method for a photovoltaic power generation system characterized by performing in.
  2. 前記発電量のピーク曲線の算出は、快晴時の日射強度曲線に対し、当該時点までの変動頂点の各任意時刻での偏差を算出した平均し、その偏差分と快晴時の日射強度曲線とを乗算して日射強度ピーク曲線とし、この日射強度ピーク曲線と太陽電池効率を乗算することで当日のピーク曲線とすることを特徴とした請求項1記載の太陽光発電システムの制御方法。 The calculation of the peak curve of the amount of power generation is performed by averaging the deviation calculated at each arbitrary time of the peak of fluctuation up to the time point with respect to the solar radiation intensity curve during clear weather, and the deviation and the solar radiation intensity curve during clear weather. The solar power generation system control method according to claim 1, wherein the solar radiation intensity peak curve is multiplied to obtain a peak curve of the day by multiplying the solar radiation intensity peak curve and solar cell efficiency.
  3. 前記所定値充電量は、前記電力貯蔵部の満充電か、満充電時点から発電終了時間までに必要な電力量を満たす充電量を確保する量であることを特徴とした請求項1又は請求項2記載の太陽光発電システムの制御方法。 The said predetermined value charge amount is a quantity which ensures the charge amount which satisfy | fills the amount of electric power required from the time of full charge of the said power storage part to a power generation completion time from a full charge time, or Claim 1 characterized by the above-mentioned. The control method of the solar power generation system of 2.
  4. 前記充放電の運転計画曲線は、充電時の運転計画に基づく値と共に放電時のみの運転計画曲線を作成し、各計画曲線に基づく計画値は段階状に作成し、充電終了時と放電開始時の接合部分にピークシフト可能な時間間隔を持たせたことを特徴とした請求項1乃至請求項3記載の太陽光発電システムの制御方法。 The charging / discharging operation plan curve creates an operation plan curve only at the time of discharging together with a value based on the operation plan at the time of charging, and creates plan values based on each planning curve in stages, at the end of charging and at the start of discharging. 4. The method for controlling a photovoltaic power generation system according to claim 1, wherein a time interval capable of peak shifting is provided at the joint portion of the solar power generation system.
  5. 前記電力貯蔵部は、非充電状態で、且つ発電量が運転計画曲線に基づく発電出力値よりも大きいときに、前記太陽光発電装置を電力系統から部分的に解列することを特徴とした請求項1乃至請求項4記載の太陽光発電システムの制御方法。 The power storage unit is partly disconnected from the power system when the power storage unit is in a non-charged state and the power generation amount is larger than a power generation output value based on an operation plan curve. The control method of the solar power generation system of claim | item 1 thru | or 4.
  6. 前記太陽光発電装置の電力系統からの解列制御は、太陽光発電装置の出力予測量から負荷予測による電力量を差し引いた信号に基づくものであることを特徴とした請求項1乃至請求項5記載の太陽光発電システムの制御方法。 6. The disconnection control from the power system of the photovoltaic power generation apparatus is based on a signal obtained by subtracting the amount of power by load prediction from the predicted output amount of the photovoltaic power generation apparatus. The solar power generation system control method described.
  7. 前記太陽電池群は、メッシュで区切られた区分単位で構成し、系統との接続と解列の切替制御は、任意の単位時間における発電量の出力予測と、この出力予測に対する発電変動時に各区分単位毎で行うことを特徴とした請求項1乃至請求項4記載の太陽光発電システムの制御方法。 The solar cell group is composed of division units separated by a mesh, and connection control to the grid and disconnection switching control are performed for output prediction of the amount of power generation in an arbitrary unit time, and each division at the time of power generation fluctuation with respect to this output prediction. 5. The method for controlling a solar power generation system according to claim 1, wherein the control method is performed for each unit.
  8. 前記発電量の出力予測は、前記任意の単位時間をさらに細分化した短周期での計測幅を持たせて発電量を計測し、個々の太陽電池の効率と面積、短周期の計測時間から日射強度を算出し、これを前記メッシュの中心をx軸,y軸方向に1メッシュずつ過去データをシフトしながら短周期の計測時間単位分をn回繰り返して2つのデータの最大相関関数を算出し、この最大相関関数とメッシュ間の距離から風向きと風力を決定して短周期の計測結果より日射変動成分を抽出して前記単位時間分についての日射量を求め、この日射量に前記メッシュ個々で持つ発電効率と面積をかけて発電量の予測値とすることを特徴とした請求項5記載の太陽光発電システムの制御方法。 The output prediction of the power generation amount is to measure the power generation amount with a short period measurement width obtained by further subdividing the arbitrary unit time, and to calculate solar radiation from the efficiency and area of each solar cell and the short cycle measurement time. Intensity is calculated, and the maximum correlation function of the two data is calculated by repeating the short time measurement time unit n times while shifting the past data by 1 mesh in the x-axis and y-axis directions at the center of the mesh. The wind direction and the wind force are determined from the maximum correlation function and the distance between the meshes, and the solar radiation fluctuation component is extracted from the measurement result of the short period to obtain the solar radiation amount for the unit time. 6. The method for controlling a solar power generation system according to claim 5, wherein the predicted value of the power generation amount is obtained by multiplying the power generation efficiency and area of the solar power generation system.
  9. 前記単位時間分の日射量は、風上側から順次繰り返して積算して求めることを特徴とした請求項6記載の太陽光発電システムの制御方法。 The solar light generation system control method according to claim 6, wherein the amount of solar radiation for the unit time is obtained by sequentially and repeatedly integrating from the windward side.
  10. 太陽電池群よりなる太陽光発電装置と、電力貯蔵部と電力変換部を有する安定化装置を電力系統に接続し、安定化装置の制御部を介して電力変換部に対する制御を実行し、電力貯蔵部への充放電制御を行うように構成した太陽光発電システムであって、前記太陽電池群を任意のメッシュで区切って区分単位とし、この区分単位毎に任意時間で発電量の出力予測を行い、この出力予測値に基づき発電量が予め作成された運転計画曲線の値より大のとき太陽光発電装置を電力系統から解列するものにおいて、
    前記単位時間を細分化した短周期で個々の太陽光発電装置の発電量を計測する計測手段と、個々の太陽光発電装置における太陽電池効率と面積、及び前記短周期計測時間から日射強度を算出する日射強度算出手段と、前記区分単位のメッシュ中心をx軸,y軸方向に1メッシュずつ日射強度の過去データのシフトをn回繰返して2つのデータの最大相関係数を算出する最大相関係数算出手段と、この最大相関係数をメッシュ間の距離から風向きと風力を決定して日射変動分を決める日射変動分算出手段と、前記単位時間でメッシュの風上側から風下への繰返し得られる日射変動分の積算から前記単位時間分の日射量を算出する日射量算出手段と、得られた日射量にメッシュが持つ発電効率と面積をかけて発電量の予測値を算出する予測値算出手段とを備えたことを特徴とした太陽光発電システムの発電量予測装置。 The solar radiation intensity is calculated from the measuring means for measuring the amount of power generated by each photovoltaic power generation device in a short cycle subdivided into the unit time, the solar cell efficiency and area of ​​each photovoltaic power generation device, and the short cycle measurement time. The maximum phase relationship between the solar radiation intensity calculation means to be used and the maximum correlation coefficient of the two data is calculated by repeating the shift of the past data of the solar radiation intensity n times for each mesh in the x-axis and y-axis directions of the mesh center of the division unit. The number calculation means, the solar radiation fluctuation calculation means for determining the wind direction and the wind force from the distance between the meshes and the solar radiation fluctuation amount, and the solar radiation fluctuation calculation means for determining the maximum correlation coefficient can be repeatedly obtained from the wind side to the leeward side of the mesh in the unit time. A solar radiation amount calculation means for calculating the solar radiation amount for the unit time from the integration of the solar radiation fluctuation amount, and a predictive value calculation means for calculating the predicted value of the power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and area of ​​the mesh. A power generation amount prediction device for a photovoltaic power generation system, which is characterized by being equipped with. A photovoltaic power generation device composed of a group of solar cells and a stabilization device having a power storage unit and a power conversion unit are connected to the power system, and control is performed on the power conversion unit via the control unit of the stabilization device to store power. A photovoltaic power generation system configured to perform charge / discharge control to a unit, wherein the solar cell group is divided into arbitrary units by an arbitrary mesh, and an output of power generation is predicted at an arbitrary time for each divided unit In the case where the photovoltaic power generation device is disconnected from the power system when the power generation amount is larger than the value of the operation plan curve created in advance based on the output predicted value, A photovoltaic power generation device composed of a group of solar cells and a stabilization device having a power storage unit and a power conversion unit are connected to the power system, and control is performed on the power conversion unit via the control unit of the stabilization device to store power. A photovoltaic power generation system configured to perform charge / discharge control to a unit, wherein the solar cell group is divided into arbitrary units by an arbitrary mesh, and an output of power generation is predicted at an arbitrary time for each divided unit In the case where the photovoltaic power generation device is disconnected from the power system when the power generation amount is larger than the value of the operation plan curve created in advance based on the output predicted value,
    Measuring means for measuring the power generation amount of each photovoltaic power generation device in a short cycle that subdivides the unit time, solar cell efficiency and area in each photovoltaic power generation device, and calculating the solar radiation intensity from the short cycle measurement time And a maximum correlation between calculating the maximum correlation coefficient of the two data by repeating the shift of the past data of the solar radiation intensity n times for each mesh in the x-axis and y-axis directions. The number calculation means, the maximum correlation coefficient, the solar radiation fluctuation calculation means for determining the solar radiation fluctuation by determining the wind direction and the wind power from the distance between the meshes, and the mesh can be obtained repeatedly from the windward side to the leeward in the unit time. A solar radiation amount calculating means for calculating the solar radiation amount for the unit time fr Measuring means for measuring the power generation amount of each photovoltaic power generation device in a short cycle that subdivides the unit time, solar cell efficiency and area in each photovoltaic power generation device, and calculating the solar radiation intensity from the short cycle measurement time And a The number calculation means, the maximum correlation coefficient. The number calculation means, the maximum correlation coefficient. , the solar radiation fluctuation calculation means for determining the solar radiation fluctuation by determining the wind direction and the wind power from the distance between the meshes, and the mesh can be obtained repeatedly from the windward side to the leeward in the unit time. A solar radiation amount calculating means for calculating the solar radiation amount for the unit time fr om the integrated solar radiation fluctuation amount, and a predicted value calculation for calculating a predicted power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and area of the mesh Power generation amount prediction apparatus of photovoltaic power generation system characterized by including a stage. om the integrated solar radiation fluctuation amount, and a predicted value calculation for calculating a predicted power generation amount by multiplying the obtained solar radiation amount by the power generation efficiency and area of ​​the mesh Power generation amount prediction apparatus of photovoltaic power generation system characterized by including a stage.
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