JP2012060775A - Storage battery operation device - Google Patents

Storage battery operation device Download PDF

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JP2012060775A
JP2012060775A JP2010201495A JP2010201495A JP2012060775A JP 2012060775 A JP2012060775 A JP 2012060775A JP 2010201495 A JP2010201495 A JP 2010201495A JP 2010201495 A JP2010201495 A JP 2010201495A JP 2012060775 A JP2012060775 A JP 2012060775A
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storage battery
storage
power
grade
surplus power
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Hyogo Takami
表吾 高見
Masashi Kawashima
正史 川島
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Tokyo Electric Power Company Holdings Inc
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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

PROBLEM TO BE SOLVED: To provide a storage battery operation device capable of securing a battery capacity without excess or deficiency from a plurality of storage batteries to charge a surplus power from a power system, putting the uncertainty of power generation output by photovoltaic power generation equipment into account.SOLUTION: Available storage battery grasping means 12 grasps a plurality of storage batteries available to charge an estimated surplus power predicted by surplus power previous-day prediction means 11. Grade allocation means 14 for available storage batteries allocates a plurality of available storage batteries to one of grades based on criteria for grade allocation previously stored in a grade allocation criteria storage part 15. Usage pre-advice means 16 advices a charging time zone in advance to the batteries to which a grade is allocated by the grade allocation means 14 for available storage batteries in the order of higher grade.

Description

本発明は、電力系統に発生した余剰電力を蓄電池で吸収できるように電力系統に配置された蓄電池を運用する蓄電池運用装置に関する。   The present invention relates to a storage battery operation device that operates a storage battery arranged in a power system so that surplus power generated in the power system can be absorbed by the storage battery.

近年、太陽光発電設備PVの設置が一般家庭に広まってきているが、太陽光発電設備が大量に導入されると、電力需要の少ない時期(軽負荷期)にはベース供給力と太陽光発電設備の合計発電量が電力需要を上回り、電力系統全体で余剰電力(系統内余剰電力)が発生する可能性がある。特に、電力需要の少ない休日などの特異日には系統内余剰電力が発生する可能性が高まる。   In recent years, the installation of PV power generation facilities PV has become widespread in ordinary households, but when a large amount of PV power generation facilities are introduced, the base supply capacity and PV power generation are reduced during periods of low power demand (light load period). There is a possibility that the total power generation amount of the facility exceeds the power demand, and surplus power (surplus power in the system) is generated in the entire power system. In particular, there is a high possibility that surplus power in the system will be generated on special days such as holidays when power demand is low.

図6は特異日の電力需要曲線及び電力供給曲線の一例を示すグラフである。図6に示すように、電力会社からの電力供給は原子力発電、流込式水力発電及び火力発電の最低出力曲線S10でベース供給を担い、火力発電での最低出力曲線S10を超えた運転や揚水発電所における揚水発電で負荷変動に対応している。火力発電は出力を保持するための最低出力曲線S10があるので、例えば、夜間(23時〜7時)において揚水発電所の水を上池に汲み上げ、火力発電の最低出力を保つようにしている。   FIG. 6 is a graph showing an example of a power demand curve and a power supply curve on a specific day. As shown in FIG. 6, the power supply from the electric power company is based on the minimum output curve S10 of nuclear power generation, inflow hydropower generation, and thermal power generation, and operation and pumping exceeding the minimum output curve S10 in thermal power generation. It responds to load fluctuations with pumped-storage power generation at the power plant. Since thermal power generation has a minimum output curve S10 for maintaining output, for example, the water of a pumped storage power plant is pumped into the upper pond at night (from 23:00 to 7:00), and the minimum output of thermal power generation is maintained. .

近年においては太陽光発電設備による太陽光発電が導入され、太陽光発電による供給電力も増加している。この太陽光発電は天候により出力が変動し出力調整が難しいので、通常日においては電力会社は揚水発電や火力発電で出力調整を行っている。   In recent years, solar power generation by solar power generation facilities has been introduced, and the power supplied by solar power generation has also increased. Since the output of this solar power generation fluctuates due to the weather and it is difficult to adjust the output, the power company adjusts the output with pumped-storage power generation or thermal power generation on a normal day.

一方、特異日(例えば、休日)の電力需要は平日の場合より減少するので、図6に示すように、その電力需要曲線S11が電力供給曲線S12より下回ることがある。そうすると、太陽光発電の電力が系統内余剰電力として発生する。図6では9時45分〜19時において、系統内余剰電力が発生した場合を示している。   On the other hand, since the power demand on a specific day (for example, a holiday) decreases from that on weekdays, the power demand curve S11 may be lower than the power supply curve S12 as shown in FIG. Then, photovoltaic power is generated as surplus power in the system. FIG. 6 shows a case where surplus power in the system is generated from 9:45 to 19:00.

この系統内余剰電力分を有効利用するためには、電力系統に接続された蓄電池を活用することが考えられる。この場合の蓄電池としては、NaS電池(ナトリウム硫黄電池)、リチウムイオン電池、ニッケル水素電池などを用いることが考えられており、蓄電池には電力会社所有の蓄電池や需要家所有の蓄電池がある。需要家所有の蓄電池の利用に関しては、需要家内余剰電力(太陽電池発電量−需要家電力需要)を蓄電池に蓄電するシステムが提案されている(例えば、特許文献1参照)。   In order to effectively use the surplus power in the system, it is conceivable to use a storage battery connected to the power system. As a storage battery in this case, it is considered to use a NaS battery (sodium sulfur battery), a lithium ion battery, a nickel hydride battery, and the like, and there are a storage battery owned by an electric power company and a storage battery owned by a customer. Regarding the use of a storage battery owned by a consumer, a system has been proposed in which surplus power in a consumer (solar cell power generation amount—demand for consumer power) is stored in a storage battery (see, for example, Patent Document 1).

特開2009−284586号公報JP 2009-284586 A

しかし、特許文献1のものは需要家所有の比較的小容量の蓄電池を用いて需要家内の需給調整を行うものであり、大量の系統内余剰電力に対応することはできない。さらに、需要家によって太陽光発電出力にばらつきがあるため、余剰電力の発生具合はまちまちであり、全ての蓄電池が十分に活用されるとは限らない。太陽光発電大量導入時の系統内余剰電力を充電するためには、電力系統に接続された複数の蓄電池を十分活用し充電容量を確保する必要がある。   However, the thing of patent document 1 performs the demand-and-supply adjustment in a consumer using the storage battery of a comparatively small capacity | capacitance owned by a consumer, and cannot respond to a lot of surplus electric power in a system | strain. Furthermore, since the photovoltaic power generation output varies depending on the consumer, the amount of surplus power generated varies, and not all storage batteries are fully utilized. In order to charge the surplus power in the system at the time of introducing a large amount of solar power, it is necessary to sufficiently utilize a plurality of storage batteries connected to the power system to ensure the charging capacity.

また、太陽光発電設備の出力は不確実であるため、余剰電力量の予測値と発生値とにはズレが生じる。予測値よりも発生値が下回った場合には、予測値をベースに確保しておいた蓄電池容量の一部が使われないので、蓄電池容量を提供した蓄電池の所有者にとって不利益となる。   Moreover, since the output of the photovoltaic power generation facility is uncertain, there is a difference between the predicted value and the generated value of the surplus power. When the generated value falls below the predicted value, a part of the storage battery capacity secured based on the predicted value is not used, which is disadvantageous for the owner of the storage battery that provided the storage battery capacity.

逆に、予測値よりも発生値が上回った場合には、蓄電池容量が足りなくなり、その場合には、太陽光発電設備の出力抑制が必要となる。その際は、太陽光発電設備の所有者にとって不利益となる。   On the contrary, when the generated value exceeds the predicted value, the storage battery capacity becomes insufficient, and in that case, it is necessary to suppress the output of the photovoltaic power generation facility. In that case, it is disadvantageous for the owner of the photovoltaic power generation facility.

本発明の目的は、太陽光発電設備の出力の不確実さを考慮して系統内余剰電力を充電するための蓄電池容量を、複数の蓄電池から過不足なく確保できる蓄電池運用装置を提供することである。   An object of the present invention is to provide a storage battery operation device that can secure a storage battery capacity for charging surplus power in the system from a plurality of storage batteries without excess or deficiency in consideration of output uncertainties of photovoltaic power generation facilities. is there.

請求項1の発明に係る蓄電池運用装置は、電力系統の翌日の予測ベース供給力と翌日の太陽光発電設備の予測出力との和から翌日の予測電力需要を減算して翌日の予測余剰電力の発生確率分布を前日に求める余剰電力前日予測手段と、予め予測余剰電力の発生確率に対応する蓄電池の利用確率に応じた蓄電池のグレード分け基準を記憶したグレード分け基準記憶部と、前記電力系統に接続された複数の蓄電池の中から前記余剰電力前日予測手段で予測された予測余剰電力を充電可能な複数の蓄電池を探し出し利用可能性の高さを把握する利用可能蓄電池把握手段と、前記利用可能蓄電池把握手段で把握された蓄電池の利用可能性と前記グレード分け基準記憶部に記憶されたグレード分け基準とに基づいて充電可能な複数の蓄電池をいずれかのグレードに割り付ける利用可能蓄電池グレード割付手段と、前記利用可能蓄電池グレード割付手段でグレードが割り付けされた蓄電池に対し前記利用確率の高いグレード順に事前に蓄電池の利用確率と蓄電時間帯を告知する利用事前告知手段とを備えたことを特徴とする。   The storage battery operating device according to the invention of claim 1 is configured to subtract the predicted power demand for the next day from the sum of the predicted base supply power for the next day of the power system and the predicted output of the photovoltaic power generation facility for the next day to The surplus power one day prediction means for obtaining the occurrence probability distribution on the previous day, the grade classification reference storage unit that stores the storage battery grade classification reference corresponding to the use probability of the storage battery corresponding to the occurrence probability of the predicted surplus power in advance, and the power system The available storage battery grasping means for finding out the plurality of storage batteries that can be charged with the predicted surplus power predicted by the surplus power previous day prediction means from the plurality of connected storage batteries, and grasping the high availability, and the available use One of a plurality of rechargeable batteries that can be charged based on the availability of the storage battery grasped by the storage battery grasping means and the grade classification standard stored in the grade classification standard storage unit Available storage battery grade assigning means to be assigned to the raid, and advance notice of use of storage batteries and storage time zones in advance in order of the grades with the highest use probability for the storage batteries assigned with grades by the available storage battery grade assigning means Means.

請求項2の発明に係る蓄電池運用装置は、請求項1の発明において、前記利用事前告知手段は、通信手段を有した蓄電池に対して、前記蓄電時間帯を告知することに代えまたは追加して、前記通信手段を介した遠隔操作で蓄電スケジュールを更新することを特徴とする。   In the storage battery operation device according to the invention of claim 2, in the invention of claim 1, the use prior notification means replaces or adds to the storage battery having a communication means informing the storage time zone. The power storage schedule is updated by remote operation via the communication means.

請求項3の発明に係る蓄電池運用装置は、請求項1または2の発明において、電力系統の当日の予測ベース供給力と当日の太陽光発電設備の予測出力との和から当日の予測電力需要を減算して当日の予測余剰電力を当日に求める余剰電力当日予測手段と、前記余剰電力当日予測手段で求めた予測余剰電力が前記余剰電力前日予測手段で求めた予測余剰電力より大きいときは、利用確率の低いグレードに分類された蓄電池に対し、必要に応じて蓄電時間帯を緊急告知し、前記余剰電力当日予測手段で求めた予測余剰電力が前記余剰電力前日予測手段で求めた予測余剰電力より小さいときは、利用不要となった利用確率の高いグレードに分類された蓄電池に対し蓄電指令解除を緊急告知する利用変更通知手段とを備えたことを特徴とする。   The storage battery operating device according to the invention of claim 3 is the invention according to claim 1 or 2, wherein the predicted power demand on the day is calculated from the sum of the forecast base supply power on the day of the power system and the forecast output of the photovoltaic power generation facility on the day. The surplus power day prediction means for subtracting the predicted surplus power of the day by subtraction, and the predicted surplus power obtained by the surplus power day prediction means is greater than the forecast surplus power obtained by the surplus power previous day prediction means. For storage batteries classified as low-probability grades, emergency notification of the storage time zone is made as necessary, and the predicted surplus power calculated by the surplus power day prediction means is more than the predicted surplus power calculated by the surplus power previous day prediction means When it is small, it is characterized by comprising usage change notifying means for urgently notifying the cancellation of the power storage command for the storage batteries classified into grades with high usage probability that are no longer required.

請求項4の発明に係る蓄電池運用装置は、請求項3の発明において、前記利用変更通知手段は、通信手段を有した蓄電池に対して、前記蓄電時間帯または前記蓄電指令解除を緊急告知することに代えまたは追加して、前記通信手段を介した遠隔操作で蓄電スケジュールを修正することを特徴とする。   According to a fourth aspect of the present invention, in the storage battery operating device according to the third aspect of the invention, the usage change notifying means urgently notifies the storage battery having a communication means of the power storage time zone or the release of the power storage command. Instead of or in addition, the power storage schedule is modified by remote operation via the communication means.

請求項1によれば、前日に予測した予測余剰電力及び予め定められた複数の蓄電池の利用確率のグレード分け基準に基づいて、充電可能な複数の蓄電池をいずれかのグレードに割り付け、このグレードが割り付けされた蓄電池に対し、利用確率の高いグレード順に事前に蓄電池の利用確率と蓄電時間帯を告知するので、蓄電池所有者からすると、電力会社への蓄電池容量の提供の予測が立ち易い。これにより蓄電池の利用時及び非利用時の納得性も高まる。   According to claim 1, a plurality of rechargeable storage batteries are assigned to one of the grades based on the predicted surplus power predicted on the previous day and the predetermined classification criteria for the use probabilities of the plurality of storage batteries. Since the storage battery usage probability and the storage time zone are notified in advance to the assigned storage battery in order of grade with the highest use probability, it is easy for the storage battery owner to predict the provision of the storage battery capacity to the power company. Thereby, the persuasiveness at the time of utilization and non-use of a storage battery also increases.

請求項2の発明によれば、遠隔操作可能な蓄電池に対して蓄電スケジュールを遠隔操作で更新するので、電力会社からすると太陽光発電設備の出力が不確実であっても、系統内余剰電力を充電するための必要十分な蓄電池容量を過不足なく調達できる。   According to the invention of claim 2, since the power storage schedule is updated by remote operation for the remotely operable storage battery, even if the output of the photovoltaic power generation facility is uncertain from the electric power company, the surplus power in the system is The necessary and sufficient storage battery capacity for charging can be procured without excess or deficiency.

請求項3の発明によれば、当日予測の予測余剰電力を求める余剰電力当日予測手段を設け、当日予測の予測余剰電力が前日予測の予測余剰電力より大きいときは、利用確率の低いグレードに分類された蓄電池に対し必要に応じて蓄電時間帯を緊急告知し、当日予測の予測余剰電力が前日予測の予測余剰電力より小さいときは、利用不要となった利用確率の高いグレードに分類された蓄電池に対し蓄電指令解除を緊急告知するので、蓄電池所有者からすると、電力会社による自己の蓄電池の使用状況または非使用状況を迅速に把握できる。   According to the invention of claim 3, the surplus power same day prediction means for obtaining the predicted surplus power of the current day forecast is provided, and when the predicted surplus power of the current day forecast is larger than the predicted surplus power of the previous day forecast, it is classified into a grade having a low use probability. If the storage battery is urgently notified of the storage battery time as needed and the predicted surplus power of the current day forecast is smaller than the predicted surplus power of the previous day forecast, the storage battery classified as a grade with a high use probability that is no longer needed Therefore, the storage battery owner can promptly grasp the usage status or non-use status of the storage battery by the power company.

請求項4の発明によれば、遠隔操作可能な蓄電池に対して蓄電スケジュールを遠隔操作で更新するので、電力会社からすると太陽光発電設備の出力が不確実であっても、系統内余剰電力を充電するために必要十分な蓄電池容量を過不足なく調達できる。   According to the invention of claim 4, since the power storage schedule is updated by remote operation for the remotely operable storage battery, even if the output of the photovoltaic power generation facility is uncertain from the power company, the surplus power in the system is It is possible to procure sufficient and sufficient storage battery capacity for charging without excess or deficiency.

本発明の実施形態に係る蓄電池運用装置の一例を示す構成図。The block diagram which shows an example of the storage battery operation apparatus which concerns on embodiment of this invention. 本発明の実施形態における蓄電池情報記憶部に予め記憶された蓄電池iの蓄電池情報の説明図。Explanatory drawing of the storage battery information of the storage battery i previously memorize | stored in the storage battery information storage part in embodiment of this invention. 本発明の実施形態における利用可能蓄電池把握手段で探し出された利用可能な蓄電池情報の説明図。Explanatory drawing of the available storage battery information searched by the available storage battery grasping | ascertainment means in embodiment of this invention. 本発明の実施形態におけるグレード分け基準記憶部に記憶されたグレード分け基準の説明図。Explanatory drawing of the grade classification reference memorize | stored in the grade classification reference | standard memory | storage part in embodiment of this invention. 本発明の実施形態に係る蓄電池運用装置の他の一例を示す構成図。The block diagram which shows another example of the storage battery operation apparatus which concerns on embodiment of this invention. 特異日の電力需要曲線及び電力供給曲線の一例を示すグラフ。The graph which shows an example of the electric power demand curve and electric power supply curve of a special day.

以下、本発明の実施形態を説明する。図1は本発明の実施形態に係る蓄電池運用装置の一例を示す構成図である。   Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram illustrating an example of a storage battery operation device according to an embodiment of the present invention.

余剰電力前日予測手段11は、図示省略の入力装置から翌日の予測余剰電力を算出するために必要な前日算出条件を入力する。前日算出条件は、例えば、翌日の天気予報、暦の曜日や日にち、発電所の発電可能な発電機の容量などである。   The surplus power previous day prediction means 11 inputs the previous day calculation conditions necessary for calculating the predicted surplus power of the next day from an input device (not shown). The calculation conditions for the previous day are, for example, the weather forecast for the next day, the day and date of the calendar, and the capacity of the generator capable of generating power at the power plant.

余剰電力前日予測手段11は前日算出条件を入力すると、入力した前日算出条件に基づいて、まず、翌日の太陽光発電設備の予測出力Ppv、翌日の予測電力需要Pa、翌日のベース供給力Pbを求める。 When the surplus power previous day prediction means 11 inputs the previous day calculation condition, first, based on the input the previous day calculation condition, first, the predicted output Ppv of the photovoltaic power generation facility for the next day, the predicted power demand Pa for the next day, and the base supply power Pb for the next day are obtained. Ask.

太陽光発電設備の予測出力Ppvは天候に左右されるので、天気予報の特に日射時間を基に算出される。翌日の予測電力需要Paは暦の曜日や日にちによって異なるので、過去の実績値などを参照して算出する。また、翌日のベース供給力Pbは、発電所の発電可能な発電機の容量や過去の実績値などを基に算出される。そして、翌日の予測余剰電力Pcは、(1)式で算出する。   Since the predicted output Ppv of the photovoltaic power generation facility depends on the weather, it is calculated based on the solar radiation time in the weather forecast. The predicted power demand Pa for the next day varies depending on the day of the week and the day of the calendar, and is calculated with reference to past performance values. Further, the base supply capacity Pb of the next day is calculated based on the capacity of the generator capable of generating power at the power plant, past performance values, and the like. Then, the predicted surplus power Pc of the next day is calculated by equation (1).

[数1]
Pc=Pb+Ppv−Pa …(1)
ここで、太陽光発電設備の予測出力Ppv、翌日の予測電力需要Paは確率分布として表される。そのため、(1)式から算出される翌日の予測余剰電力Pcも発生確率分布の形で算出される。
[Equation 1]
Pc = Pb + Ppv−Pa (1)
Here, the predicted output Ppv of the photovoltaic power generation facility and the predicted power demand Pa of the next day are expressed as a probability distribution. Therefore, the predicted surplus power Pc of the next day calculated from the equation (1) is also calculated in the form of the occurrence probability distribution.

余剰電力前日予測手段11で算出された翌日の予測余剰電力Pcは、利用可能蓄電池把握手段12に入力される。利用可能蓄電池把握手段12は、電力系統に接続された複数の蓄電池の中から余剰電力前日予測手段11で予測された予測余剰電力Pcを充電可能な複数の蓄電池を把握するものである。   The predicted surplus power Pc of the next day calculated by the surplus power previous day prediction means 11 is input to the available storage battery grasping means 12. The available storage battery grasping means 12 grasps a plurality of storage batteries that can be charged with the predicted surplus power Pc predicted by the surplus power previous day prediction means 11 from among the plurality of storage batteries connected to the power system.

利用可能蓄電池把握手段12は、蓄電池情報記憶部13から電力系統に接続された複数の蓄電池の蓄電池情報を入力し、余剰電力前日予測手段11で予測された予測余剰電力Pcを充電可能な複数の蓄電池を探し出す。   The available storage battery grasping means 12 inputs storage battery information of a plurality of storage batteries connected to the power system from the storage battery information storage unit 13, and can charge the predicted surplus power Pc predicted by the surplus power previous day prediction means 11. Find a storage battery.

そして、利用可能蓄電池把握手段12で探し出された利用可能な蓄電池は、利用可能蓄電池グレード割付手段14に出力される。利用可能蓄電池グレード割付手段14は、利用可能蓄電池把握手段12で把握された充電可能な複数の蓄電池をグレード分けするものであり、グレード分け基準記憶部15に予め記憶されたグレード分け基準に基づいて、利用可能蓄電池把握手段12で把握された充電可能な各々の蓄電池をいずれかのグレードに割り付ける。   Then, the usable storage battery found by the usable storage battery grasping means 12 is output to the usable storage battery grade assigning means 14. The available storage battery grade assigning means 14 classifies a plurality of rechargeable storage batteries grasped by the available storage battery grasping means 12, and is based on the grade classification criteria stored in advance in the grade classification reference storage unit 15. The rechargeable storage batteries grasped by the available storage battery grasping means 12 are assigned to any grade.

利用可能蓄電池グレード割付手段14で割り付けされたグレード情報は、蓄電池情報記憶部13に記憶された蓄電池情報のグレード欄に格納されるとともに、利用事前告知手段16に出力される。   The grade information assigned by the usable storage battery grade assigning means 14 is stored in the grade column of the storage battery information stored in the storage battery information storage section 13 and is also output to the use prior notice means 16.

利用事前告知手段16は、利用可能蓄電池グレード割付手段14でグレードが割り付けされた蓄電池に対し、利用確率の高いグレード順に、事前にその蓄電池の利用確率と蓄電時間帯を告知する。蓄電池所有者に蓄電池の利用確率を事前に告知することで、蓄電池利用時・非利用時の納得性を高めることができる。   The use prior notification means 16 notifies the storage batteries assigned with grades by the available storage battery grade assignment means 14 in advance in the order of grades with the highest use probabilities of the storage batteries and the storage time zones. By notifying the storage battery owner of the use probability of the storage battery in advance, it is possible to improve the persuasiveness when using or not using the storage battery.

図2は、蓄電池情報記憶部13に予め記憶された蓄電池iの蓄電池情報の説明図である。電力系統に接続された各々の蓄電池iは、蓄電池情報として、所有者、通信手段の有無、電力系統での配置位置、利用可能時間帯、残容量、定格出力、信頼度、グレードなどが記憶されている。グレードには、利用可能蓄電池グレード割付手段14により割り付けられたグレードが記憶される。   FIG. 2 is an explanatory diagram of the storage battery information of the storage battery i stored in advance in the storage battery information storage unit 13. Each storage battery i connected to the power system stores, as storage battery information, the owner, presence / absence of communication means, location in the power system, available time zone, remaining capacity, rated output, reliability, grade, etc. ing. In the grade, the grade assigned by the available storage battery grade assigning means 14 is stored.

利用可能蓄電池把握手段12は、まず、蓄電池情報記憶部13に予め記憶された蓄電池iの蓄電池情報の中から、余剰電力前日予測手段11で予測された予測余剰電力Pcの発生時間帯に利用可能な蓄電池を探し出す。これは蓄電池情報の利用可能時間帯を参照して行う。そして、その中から残容量を参照し充電が可能な蓄電池を探し出す。このようにして、利用可能蓄電池把握手段12で探し出された利用可能な蓄電池は、利用可能蓄電池グレード割付手段14に出力される。   The available storage battery grasping means 12 can be used in the generation time zone of the predicted surplus power Pc predicted by the surplus power previous day prediction means 11 from the storage battery information of the storage battery i stored in advance in the storage battery information storage unit 13. The right storage battery. This is performed with reference to the available time zone of the storage battery information. And it searches for the storage battery which can be charged with reference to the remaining capacity. In this way, the usable storage battery found by the usable storage battery grasping means 12 is output to the usable storage battery grade assigning means 14.

利用可能蓄電池把握手段12では、蓄電池の利用可能性の高さについても評価し、その結果も利用可能蓄電池グレード割付手段14に出力する。利用可能性は、充電可能な複数の蓄電池の中から、蓄電池情報の項目(所有者、通信手段の有無、電力系統での配置位置、利用可能時間帯、残容量、定格出力、信頼度)を参照して評価する。   The available storage battery grasping means 12 also evaluates the high availability of the storage battery and outputs the result to the available storage battery grade assignment means 14. The availability is determined by selecting storage battery information items (owner, presence / absence of communication means, location in power system, available time zone, remaining capacity, rated output, reliability) from multiple rechargeable batteries. Refer to and evaluate.

図3は、利用可能蓄電池把握手段12で探し出された利用可能な蓄電池情報の説明図であり、図3(a)は蓄電池の利用可能性が高と評価された蓄電池jの蓄電池情報の説明図、図3(b)は蓄電池の利用可能性が低と評価された蓄電池kの蓄電池情報の説明図である。   FIG. 3 is an explanatory diagram of usable storage battery information searched by the usable storage battery grasping means 12, and FIG. 3 (a) is an explanation of storage battery information of the storage battery j evaluated as having a high availability of the storage battery. FIG. 3 and FIG. 3B are explanatory diagrams of storage battery information of the storage battery k evaluated as having low availability of the storage battery.

図3(a)に示すように、蓄電池の所有者が電力会社である場合には、電力会社の意向に沿って運用できるので評価は高い。また、通信手段の有無については通信手段を有している場合の方が評価が高い。これは、系統運用者との通信が容易であり、蓄電池の遠隔操作も可能であるからである。蓄電池の配置位置は太陽光発電設備が接続された配電線に接続されている蓄電池の評価が高い。   As shown to Fig.3 (a), when the owner of a storage battery is an electric power company, since it can operate according to the intent of an electric power company, evaluation is high. The presence or absence of communication means is more highly evaluated when the communication means is provided. This is because communication with the system operator is easy and remote operation of the storage battery is also possible. The location of the storage battery is highly evaluated by the storage battery connected to the distribution line to which the photovoltaic power generation facility is connected.

利用可能時間帯は、系統内余剰電力が発生する時間帯に蓄電池を使用できる場合が評価が高い。図3(a)に示すように、利用可能時間帯が9時〜20時と、系統内余剰電力が発生する時間帯(9時45分〜19時)のすべての時間帯に亘って蓄電池を使用できるので評価が高い。残容量や定格出力は充電できる電力量に相当するので大きい方が評価が高い。また、使用したいときに必ず使用できる信頼度の高い蓄電池の評価は高い。逆に、使用できる可能性があっても、その蓄電池が別の用途に使用され、過去の実績から実際に使用できなかった場合には信頼度の評価は低くなる。   The available time zone is highly evaluated when the storage battery can be used in the time zone when surplus power in the system is generated. As shown in FIG. 3 (a), the storage battery can be used for all the time zones in which the available time zone is from 9:00 to 20:00 and the time zone in which the surplus power in the system is generated (9:45 to 19:00). High evaluation because it can be used. Since the remaining capacity and the rated output correspond to the amount of power that can be charged, the larger the rating, the higher the evaluation. Moreover, the evaluation of a highly reliable storage battery that can be used whenever it is desired is high. On the contrary, even if there is a possibility that the battery can be used, if the storage battery is used for another purpose and cannot be actually used from the past results, the reliability evaluation becomes low.

図3(a)の蓄電池jはこれら蓄電池情報のすべての項目の評価が高いので、利用可能性がかなり高いと評価する。なお、実際には、これらの項目のすべてを満たさない場合であっても、ほぼ間違いなく使用できる蓄電池に対しては利用可能性が高いと評価できる。   The storage battery j in FIG. 3A is evaluated as having a very high availability because all items of the storage battery information are highly evaluated. In fact, even if all of these items are not satisfied, it can be evaluated that the availability is high for a storage battery that can be used almost certainly.

次に、図3(b)に示すように利用可能性が低いと評価された蓄電池kは、図3(a)に示した蓄電池jとは反対に、蓄電池情報の各項目(所有者、通信手段の有無、電力系統での配置位置、利用可能時間帯、残容量、定格出力、信頼度)の評価が低いものである。例えば、所有者は電力会社以外の需要家であり、通信手段を有してなく、蓄電池の設置位置が太陽光発電設備が接続された配電線でなく、利用時間も限られた時間帯であり、定格出力や残容量が小さく、信頼度も低い蓄電池である。   Next, as shown in FIG. 3 (b), the storage battery k evaluated as having low availability is opposite to the storage battery j shown in FIG. 3 (a). Evaluation of the presence / absence of means, location in the power system, available time zone, remaining capacity, rated output, reliability) is low. For example, the owner is a consumer other than the electric power company, does not have communication means, the storage battery is not installed on the distribution line to which the photovoltaic power generation equipment is connected, and the usage time is limited. A storage battery with a small rated output and remaining capacity and low reliability.

次に、グレード分け基準記憶部15に記憶されたグレード分け基準について説明する。図4はグレード分け基準記憶部15に記憶されたグレード分け基準の説明図である。グレード分け基準記憶部15には、予め予測余剰電力の発生確率に対応する蓄電池の利用確率に応じた蓄電池のグレード分け基準が記憶されている。図4の下図は、余剰電力前日予測手段11で求めた予測余剰電力Pcの発生確率分布であり、図4の上図は、同発生確率分布から求められた蓄電池の利用確率分布である。   Next, the grade classification standard stored in the grade classification standard storage unit 15 will be described. FIG. 4 is an explanatory diagram of the grade classification criteria stored in the grade classification criterion storage unit 15. The grade classification reference storage unit 15 stores storage battery grade classification standards corresponding to the storage battery use probabilities corresponding to the predicted surplus power generation probabilities in advance. The lower diagram of FIG. 4 is the occurrence probability distribution of the predicted surplus power Pc obtained by the surplus power previous day prediction means 11, and the upper diagram of FIG. 4 is the storage battery usage probability distribution obtained from the occurrence probability distribution.

図4では、予測余剰電力Pcの確率分布が正規分布に近似した特性として表された場合を示している。予測余剰電力Pcにおける蓄電池の利用確率は、予測余剰電力がある値以上となる累積確率として求められる。例えば、予測余剰電力PcがPcαであったとすると、予測余剰電力PcがPcαとなる確率はRcαである。蓄電池の利用確率は、予測余剰電力PcがPcα以上となる累積確率となるので、この場合には0.95(95%)となる。   FIG. 4 shows a case where the probability distribution of the predicted surplus power Pc is expressed as a characteristic approximated to a normal distribution. The use probability of the storage battery in the predicted surplus power Pc is obtained as a cumulative probability that the predicted surplus power becomes a certain value or more. For example, if the predicted surplus power Pc is Pcα, the probability that the predicted surplus power Pc is Pcα is Rcα. The use probability of the storage battery is a cumulative probability that the predicted surplus power Pc is equal to or greater than Pcα, and in this case, is 0.95 (95%).

蓄電池の利用のグレードは、A:高(ほぼ間違いなく使う)、B:中(たぶん使う)、C:低(もしかしたら使う)、D:極低(万一の際に使う)の4段階に分ける。グレードは予め定められた蓄電池の利用確率の閾値に基づいて分けられる。例えば、図4では、グレードAは蓄電池の利用確率が0.9以上の範囲、グレードBは同0.5以上0.9未満、グレードCは同0.19以上0.5未満、グレードDは同0.19未満となるように設定している。グレードは4段階に分けるだけでなく、3段階や2段階に分けてもよい。   There are four grades of storage battery usage: A: high (almost definitely used), B: medium (maybe used), C: low (probably used), and D: extremely low (used in case of emergency). Divide. The grade is divided based on a predetermined threshold value of the use probability of the storage battery. For example, in FIG. 4, grade A has a storage battery usage probability in the range of 0.9 or higher, grade B has 0.5 to 0.9, grade C has 0.19 to 0.5, and grade D has It is set to be less than 0.19. Grades may be divided not only into 4 stages but also into 3 stages or 2 stages.

例えば、予測余剰電力Pcが0〜Pc1の範囲であるときは、蓄電池の利用確率が高いグレードAの蓄電池のみを使用し、予測余剰電力PcがPc1〜Pc2の範囲であるときは、グレードAの蓄電池に加え、蓄電池の利用確率がやや高いグレードBの蓄電池までを使用し、予測余剰電力PcがPc2〜Pc3の範囲であるときは、グレードA、Bの蓄電池に加え、蓄電池の利用確率が低いグレードCの蓄電池までを使用し、予測余剰電力PcがPc3以上であるときは、グレードA、B、Cの蓄電池に加え、蓄電池の利用確率が極低のグレードDの蓄電池までを使用する。   For example, when the predicted surplus power Pc is in the range of 0 to Pc1, use only a grade A storage battery with a high use probability of the storage battery, and when the predicted surplus power Pc is in the range of Pc1 to Pc2, In addition to the storage battery, when using a storage battery of grade B with a slightly high probability of use of the storage battery, and the predicted surplus power Pc is in the range of Pc2 to Pc3, in addition to the storage batteries of grade A and B, the use probability of the storage battery is low When a grade C storage battery is used and the predicted surplus power Pc is Pc3 or more, in addition to the grade A, B, C storage battery, a grade D storage battery with a very low use probability of the storage battery is used.

利用可能蓄電池グレード割付手段14は、このようなグレード分け基準に基づき、利用可能蓄電池把握手段12で把握された充電可能な複数の蓄電池をグレード分けする。   The available storage battery grade assigning means 14 classifies a plurality of rechargeable storage batteries grasped by the available storage battery grasping means 12 based on such grade classification criteria.

まず、利用可能蓄電池把握手段12で把握された充電可能な複数の蓄電池を利用可能性の順に列挙する。   First, a plurality of rechargeable storage batteries grasped by the usable storage battery grasping means 12 are listed in order of availability.

次に、Pc1に相当する充電容量を確保するために必要な蓄電池を利用可能性の高い方から選定し、グレードAと分類する。残った蓄電池の中から、Pc2とPc1の差に相当する充電容量を確保するために必要な蓄電池を利用可能性の高い方から選定し、グレードBと分類する。   Next, a storage battery necessary for securing a charging capacity corresponding to Pc1 is selected from those having high availability and classified as grade A. From the remaining storage batteries, the storage batteries necessary for securing the charge capacity corresponding to the difference between Pc2 and Pc1 are selected from those with the highest availability and are classified as grade B.

さらに、残った蓄電池の中から、Pc3とPc2の差に相当する充電容量を確保するために必要な蓄電池を利用可能性の高い方から選定し、グレードCと分類とする。最後に残った蓄電池はグレードDと分類する。   Furthermore, from the remaining storage batteries, a storage battery necessary for securing a charging capacity corresponding to the difference between Pc3 and Pc2 is selected from those having a high possibility of use, and is classified as grade C. The last remaining storage battery is classified as grade D.

利用可能蓄電池グレード割付手段14で割り付けされたグレード情報は、利用事前告知手段16に入力される。利用事前告知手段16は、利用可能蓄電池グレード割付手段14で割り付けされたグレード情報を入力すると、系統内余剰電力が発生する時間帯において、どの時間帯にどの蓄電池を組み合わせて充電させるかを決定する。そして、利用確率の高いグレード順に、その蓄電池に対してグレード(利用確率)と充電量、充電時間帯を告知する。   The grade information assigned by the usable storage battery grade assigning means 14 is input to the use prior notice means 16. When the advance notice means 16 inputs the grade information assigned by the available storage battery grade assignment means 14, it determines which storage battery is combined and charged in which time zone in the time zone when surplus power in the system is generated. . Then, the grade (usage probability), the amount of charge, and the charging time zone are notified to the storage battery in order of grade with the highest usage probability.

例えば、利用可能蓄電池グレード割付手段14でグレードA、B、C、Dが割り付けられた場合には、まず、グレードAが割り付けられた蓄電池の蓄電時間帯を決定し、次に、グレードBが割り付けられた蓄電池の蓄電時間帯を決定し、以下同様に、グレードC、Dが割り付けられた蓄電池の蓄電時間帯を決定する。そして、グレードAが割り付けられた蓄電池の所有者、グレードBが割り付けられた蓄電池の所有者、グレードCが割り付けられた蓄電池の所有者、グレードDが割り付けられた蓄電池の所有者の順に蓄電時間帯を割り当てる。   For example, when grades A, B, C, and D are assigned by the available storage battery grade assigning means 14, first, the storage time zone of the storage battery to which grade A is assigned is determined, and then grade B is assigned. The storage time zone of the assigned storage battery is determined, and similarly, the storage time zone of the storage battery to which grades C and D are assigned is determined. And the storage time zone in order of the owner of the storage battery assigned grade A, the owner of the storage battery assigned grade B, the owner of the storage battery assigned grade C, and the owner of the storage battery assigned grade D Assign.

この告知は、蓄電池が通信手段を有する場合には通信手段にて通知し、蓄電池が通信手段を有していない場合には、蓄電池所有者に別の通信手段で通知することになる。また、蓄電時間帯を告知することに代え、または追加して、蓄電池が通信手段を介した遠隔操作で蓄電スケジュールを更新するようにしてもよい。これにより、その蓄電池は、更新された蓄電スケジュールで制御され系統内余剰電力を充電できる。   This notification is notified by the communication means when the storage battery has communication means, and is notified to the owner of the storage battery by another communication means when the storage battery does not have communication means. Further, instead of or in addition to announcing the storage time zone, the storage battery may update the storage schedule by remote operation via the communication means. Thereby, the storage battery is controlled by the updated power storage schedule and can charge the surplus power in the system.

以上の説明では、前日に、翌日の系統内余剰電力を予測するようにしたが、それに加え、当日に、当日の系統内余剰電力を予測し、前日に予測した系統内余剰電力と異なるときは、その相違に基づく告知内容を変更するようにしてもよい。図5は、その場合の本発明の実施形態に係る蓄電池運用装置の一例を示す構成図である。   In the above explanation, the surplus power in the grid on the next day is predicted on the previous day. The notification content based on the difference may be changed. FIG. 5 is a configuration diagram showing an example of the storage battery operation device according to the embodiment of the present invention in that case.

図5の一例は、図1に示した一例に対し、余剰電力当日予測手段17、利用前日情報記憶部18、利用当日情報記憶部19、比較手段20、利用変更通知手段21を追加して設けたものである。図1と同一要素には同一符号を付し重複する説明は省略する。   The example of FIG. 5 is provided by adding surplus power day prediction means 17, the use day information storage unit 18, use day information storage unit 19, comparison unit 20, and use change notification unit 21 to the example shown in FIG. 1. It is a thing. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

余剰電力当日予測手段17は、図示省略の入力装置から当日の予測余剰電力を算出するために必要な当日算出条件を入力する。当日算出条件は、例えば、当日の天気予報、暦の曜日や日にち、発電所の発電可能な発電機の容量などである。余剰電力当日予測手段17は当日算出条件を入力すると、余剰電力前日予想手段11と同様に、入力した当日算出条件に基づいて、まず、当日の太陽光発電設備の予測出力Ppv’、当日の予測電力需要Pa’、当日のベース供給力Pb’を求める。そして、当日の予測余剰電力Pc’を(2)式で算出する。   The surplus power day prediction means 17 inputs the same day calculation conditions necessary for calculating the forecast surplus power of the day from an input device (not shown). The calculation conditions for the day include, for example, the weather forecast for the day, the day and date of the calendar, and the capacity of the generator capable of generating power at the power plant. When the surplus power day prediction means 17 inputs the current day calculation conditions, similarly to the surplus power previous day prediction means 11, based on the input current day calculation conditions, first, the prediction output Ppv ′ of the solar power generation facility for the day, The electric power demand Pa ′ and the base supply power Pb ′ of the day are obtained. Then, the predicted surplus power Pc ′ on that day is calculated by the equation (2).

[数2]
Pc’=Pb’+Ppv’−Pa’ …(2)
余剰電力当日予測手段17で算出された当日の予測余剰電力Pc’は、利用可能蓄電池把握手段12に入力されるとともに、利用当日情報記憶部19に記憶される。利用可能蓄電池把握手段12は、電力系統に接続された複数の蓄電池の中から余剰電力当日予測手段17で予測された予測余剰電力Pc’を充電可能な複数の蓄電池を把握する。そして、利用可能蓄電池把握手段12で把握された利用可能な蓄電池は、利用可能蓄電池グレード割付手段14により複数の蓄電池をグレード分けされ、そのグレード情報は、蓄電池情報記憶部13に格納されるとともに、利用当日情報記憶部19に記憶される。これにより、利用当日情報記憶部19には当日の予測余剰電力Pc’及び複数の蓄電池のグレード情報が記憶される。
[Equation 2]
Pc ′ = Pb ′ + Ppv′−Pa ′ (2)
The predicted surplus power Pc ′ of the day calculated by the surplus power day prediction means 17 is input to the available storage battery grasping means 12 and stored in the use day information storage unit 19. The available storage battery grasping means 12 grasps a plurality of storage batteries that can be charged with the predicted surplus power Pc ′ predicted by the surplus power day prediction means 17 from among the plurality of storage batteries connected to the power system. And the available storage battery grasped by the usable storage battery grasping means 12 is graded into a plurality of storage batteries by the usable storage battery grade assignment means 14, and the grade information is stored in the storage battery information storage unit 13, It is stored in the use day information storage unit 19. Thereby, the predicted surplus power Pc ′ of the day and the grade information of the plurality of storage batteries are stored in the use day information storage unit 19.

一方、利用前日情報記憶部18には、余剰電力前日予測手段11で算出された予測余剰電力Pc、及びその予測余剰電力Pcに基づいてグレード分けされたグレード情報が記憶されている。   On the other hand, the pre-use date information storage unit 18 stores the predicted surplus power Pc calculated by the surplus power pre-day prediction means 11 and the grade information graded based on the predicted surplus power Pc.

比較手段20は、利用前日情報記憶部18に記憶された前日の予測余剰電力Pcと、利用当日情報記憶部19に記憶された当日の予測余剰電力Pc’とを比較する。そして、利用変更通知手段21は、比較手段20により、当日の予測余剰電力Pc’が前日の予測余剰電力Pcより大きいと判断されたときは、当日に利用確率の低いグレードに分類された蓄電池に対し、必要に応じて利用の蓄電時間帯を緊急告知する。これにより、当日の予測余剰電力Pc’が前日の予測余剰電力Pcより大きくなったときは、利用確率の低い蓄電池に対しても、利用する可能性があることを告知する。   The comparison unit 20 compares the predicted surplus power Pc of the previous day stored in the use day information storage unit 18 with the predicted surplus power Pc ′ of the day stored in the use day information storage unit 19. When the comparison unit 20 determines that the predicted surplus power Pc ′ of the current day is larger than the predicted surplus power Pc of the previous day, the use change notifying unit 21 converts the storage battery classified into a grade with a low use probability on the current day. On the other hand, emergency notification of the storage time zone for use is made as necessary. As a result, when the predicted surplus power Pc 'of the current day becomes larger than the predicted surplus power Pc of the previous day, a notice is given that there is a possibility of using even a storage battery with a low use probability.

一方、利用変更通知手段21は、比較手段20により、当日の予測余剰電力Pc’が前日の予測余剰電力Pcより小さいと判断されたときは、利用不要となった利用確率の高いグレードに分類された蓄電池に対し蓄電指令解除を緊急告知する。これにより、当日の予測余剰電力Pc’が前日の予測余剰電力Pcより小さくなったときは、利用確率の高い蓄電池に対して利用しないことになったことを告知する。また、利用事前告知手段16により、蓄電池が通信手段を介して遠隔操作で蓄電スケジュールを更新している場合には、その蓄電スケジュールを変更することになる。   On the other hand, when the comparison unit 20 determines that the predicted surplus power Pc ′ of the current day is smaller than the predicted surplus power Pc of the previous day, the use change notifying unit 21 is classified into a grade with a high use probability that the use is unnecessary. Urgently notify the storage battery of the cancellation of the power storage command. As a result, when the predicted surplus power Pc 'of the current day becomes smaller than the predicted surplus power Pc of the previous day, it is notified that the storage battery having a high use probability is not used. In addition, when the storage battery updates the power storage schedule by remote operation via the communication means by the use prior notification means 16, the power storage schedule is changed.

これにより、当日に利用する蓄電池が変更となった場合であっても、系統内余剰電力を充電するための必要十分な蓄電池容量を過不足なく調達できる。   Thereby, even if it is a case where the storage battery utilized on the day is changed, the necessary and sufficient storage battery capacity for charging the surplus electric power in a system | strain can be procured without excess and deficiency.

11…余剰電力前日予測手段、12…利用可能蓄電池把握手段、13…蓄電池情報記憶部、14…利用可能蓄電池グレード割付手段、15…ブレード分け基準記憶部、16…利用事前告知手段、17…余剰電力当日予測手段、18…利用前日情報記憶部、19…利用当日情報記憶部、20…比較手段、21…利用変更通知手段 DESCRIPTION OF SYMBOLS 11 ... Surplus power one day prediction means, 12 ... Available storage battery grasping means, 13 ... Storage battery information storage part, 14 ... Available storage battery grade assignment means, 15 ... Blade division | segmentation reference | standard storage part, 16 ... Pre-use notification means, 17 ... Surplus Electric power day prediction means, 18 ... pre-use day information storage section, 19 ... use day information storage section, 20 ... comparison means, 21 ... use change notification means

Claims (4)

電力系統の翌日の予測ベース供給力と翌日の太陽光発電設備の予測出力との和から翌日の予測電力需要を減算して翌日の予測余剰電力の発生確率分布を前日に求める余剰電力前日予測手段と、
予め予測余剰電力の発生確率に対応する蓄電池の利用確率に応じた蓄電池のグレード分け基準を記憶したグレード分け基準記憶部と、
前記電力系統に接続された複数の蓄電池の中から前記余剰電力前日予測手段で予測された予測余剰電力を充電可能な複数の蓄電池を探し出し利用可能性の高さを把握する利用可能蓄電池把握手段と、
前記利用可能蓄電池把握手段で把握された蓄電池の利用可能性と前記グレード分け基準記憶部に記憶されたグレード分け基準とに基づいて充電可能な複数の蓄電池をいずれかのグレードに割り付ける利用可能蓄電池グレード割付手段と、
前記利用可能蓄電池グレード割付手段でグレードが割り付けされた蓄電池に対し前記利用確率の高いグレード順に事前に蓄電池の利用確率と蓄電時間帯を告知する利用事前告知手段とを備えたことを特徴とする蓄電池運用装置。
The surplus power previous day prediction means for subtracting the next day forecast power demand from the sum of the forecast base supply capacity of the next day of the power system and the forecast output of the next day's photovoltaic power generation facility to obtain the next day's forecast surplus power occurrence probability distribution When,
A grade classification reference storage unit that stores storage battery grade classification standards corresponding to storage battery use probabilities corresponding to the predicted surplus power generation probability in advance,
Available storage battery grasping means for finding out a plurality of storage batteries that can be charged with the predicted surplus power predicted by the surplus power previous day prediction means from a plurality of storage batteries connected to the power system, and grasping the high availability ,
Available storage battery grade that allocates a plurality of rechargeable batteries to any grade based on the availability of the storage battery grasped by the usable storage battery grasping means and the grade classification standard stored in the grade classification standard storage unit Allocation means;
A storage battery comprising: a prior notice means for notifying a storage battery use probability and a storage time zone in advance in order of the grade having the highest use probability with respect to the storage battery assigned a grade by the usable storage battery grade assigning means Operational device.
前記利用事前告知手段は、通信手段を有した蓄電池に対して、前記蓄電時間帯を告知することに代えまたは追加して、前記通信手段を介した遠隔操作で蓄電スケジュールを更新することを特徴とする請求項1に記載の蓄電池運用装置。 The pre-notification means of use is characterized in that, instead of or in addition to announcing the power storage time zone for a storage battery having a communication means, the power storage schedule is updated by remote operation via the communication means. The storage battery operation device according to claim 1. 電力系統の当日の予測ベース供給力と当日の太陽光発電設備の予測出力との和から当日の予測電力需要を減算して当日の予測余剰電力を当日に求める余剰電力当日予測手段と、
前記余剰電力当日予測手段で求めた予測余剰電力が前記余剰電力前日予測手段で求めた予測余剰電力より大きいときは、利用確率の低いグレードに分類された蓄電池に対し、必要に応じて蓄電時間帯を緊急告知し、前記余剰電力当日予測手段で求めた予測余剰電力が前記余剰電力前日予測手段で求めた予測余剰電力より小さいときは、利用不要となった利用確率の高いグレードに分類された蓄電池に対し蓄電指令解除を緊急告知する利用変更通知手段とを備えたことを特徴とする請求項1または2に記載の蓄電池運用装置。
Surplus power day prediction means for subtracting the forecast power demand for the day from the sum of the forecast base supply capacity for the power system on the day and the forecast output of the photovoltaic power generation facility for the day to obtain the forecast surplus power for the day;
When the predicted surplus power calculated by the surplus power day prediction means is larger than the predicted surplus power calculated by the surplus power previous day prediction means, for storage batteries classified as a grade with a low use probability, a storage time zone as necessary When the surplus power calculated by the surplus power same day prediction means is smaller than the predicted surplus power calculated by the surplus power previous day prediction means, the storage battery classified as a grade with a high use probability that is no longer required The storage battery operating device according to claim 1, further comprising usage change notification means for urgently notifying the storage command cancellation.
前記利用変更通知手段は、通信手段を有した蓄電池に対して、前記蓄電時間帯または前記蓄電指令解除を緊急告知することに代えまたは追加して、前記通信手段を介した遠隔操作で蓄電スケジュールを修正することを特徴とする請求項3に記載の蓄電池運用装置。 The usage change notification means replaces or adds an emergency notification of the storage time period or the release of the storage command to the storage battery having the communication means, and remotely stores the storage schedule via the communication means. The storage battery operating device according to claim 3, wherein the storage battery operating device is modified.
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