JP2018191380A - Residual quantity management device of storage battery - Google Patents

Residual quantity management device of storage battery Download PDF

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JP2018191380A
JP2018191380A JP2017089496A JP2017089496A JP2018191380A JP 2018191380 A JP2018191380 A JP 2018191380A JP 2017089496 A JP2017089496 A JP 2017089496A JP 2017089496 A JP2017089496 A JP 2017089496A JP 2018191380 A JP2018191380 A JP 2018191380A
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remaining amount
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JP6743754B2 (en
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大介 鶴丸
Daisuke Tsurumaru
大介 鶴丸
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a residual quantity management device capable of responding to a request value when necessary, while uniformly maintaining residual quantity of a plurality of storage batteries.SOLUTION: A residual quantity management device of a storage battery calculates a charging command value with respect to each of a plurality of AC-DC conversion devices by multiplying a maximum charging power value for each of the plurality of AC-DC conversion devices to a total charging request value, and dividing the multiplied result by a total value of maximum charging power values of the plurality of AC-DC conversion devices, in a case where the total charging request value is not the maximum charging power value or less, and variation in residual quantity of a plurality of storage batteries is less than a given value.SELECTED DRAWING: Figure 1

Description

この発明は、蓄電池の残量管理装置に関する。   The present invention relates to a storage battery remaining amount management device.

特許文献1は、蓄電池の残量管理装置を開示する。当該残量管理装置によれば、複数の蓄電池の残量を均一に保つことができる。   Patent Literature 1 discloses a storage battery remaining amount management device. According to the remaining amount management device, the remaining amounts of the plurality of storage batteries can be kept uniform.

特開2014−124063号公報JP 2014-124063 A

しかしながら、特許文献1に記載の残量管理装置においては、複数の蓄電池の残量を保つために、充放電に関する要求値に対して適切に対応できないこともある。   However, in the remaining amount management device described in Patent Literature 1, in order to maintain the remaining amount of the plurality of storage batteries, it may not be possible to appropriately respond to the required value related to charging / discharging.

この発明は、上述の課題を解決するためになされた。この発明の目的は、複数の蓄電池の残量を均一に保ちつつ、必要時には要求値に対応できる残量管理装置を提供することである。   The present invention has been made to solve the above-described problems. An object of the present invention is to provide a remaining amount management device capable of meeting a required value when necessary while keeping the remaining amounts of a plurality of storage batteries uniform.

この発明に係る蓄電池の残量管理装置は、複数の蓄電池の各々において複数の蓄電池モジュールが並列に接続されており、前記複数の蓄電池の各々からの直流電力を複数の交直変換装置の各々により交流電力に変換して当該交流電力を電力系統に供給する電力供給システムにおいて、前記複数の蓄電池の各々の残量から前記複数の蓄電池の残量の平均値を減算した値に基づいて前記複数の蓄電池の各々の残量補正用の充電可能列数を演算する充放電可能数演算部と、前記複数の交直変換装置の各々の最大充電電力値を前記複数の交直変換装置の各々に対応する蓄電池の残量補正用の充電可能列数で除算することで、前記複数の交直変換装置の各々の1並列当たりの最大充電電力値を演算する最大充放電電力値演算部と、前記複数の交直変換装置の各々の1並列当たりの最大充電電力値のうちの最小値に前記複数の蓄電池の各々の残量補正用の充電可能列数の合計を乗算することで、システム最大充電電力値を演算するシステム最大充放電電力値演算部と、総合充電要求値が前記システム最大充電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値以上の場合は、前記システム最大充電電力値を総合充電要求値として、当該総合充電要求値に前記複数の蓄電池の各々の残量補正用の充電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の充電可能列数の合計値で除算することで、前記複数の交直変換装置の各々に対する充電指令値を演算し、総合充電要求値が前記最大充電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合充電要求値に前記複数の交直変換装置の各々の最大充電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置の最大充電電力値の合計値で除算することで、前記複数の交直変換装置の各々に対する充電指令値を演算する充放電指令値演算部と、を備えた。   In the storage battery remaining amount management device according to the present invention, a plurality of storage battery modules are connected in parallel in each of the plurality of storage batteries, and direct current power from each of the plurality of storage batteries is AC-converted by each of the plurality of AC / DC converters. In the power supply system that converts the electric power to supply the AC power to the power system, the plurality of storage batteries based on a value obtained by subtracting an average value of the remaining amount of the plurality of storage batteries from the remaining amount of each of the plurality of storage batteries A chargeable / dischargeable number calculating unit that calculates the number of chargeable columns for each remaining amount correction, and a maximum charge power value of each of the plurality of AC / DC converters of a storage battery corresponding to each of the plurality of AC / DC converters A maximum charge / discharge power value calculation unit that calculates a maximum charge power value per parallel of each of the plurality of AC / DC converters by dividing by the number of chargeable columns for remaining amount correction, and the plurality of AC / DC converters A system that calculates a system maximum charge power value by multiplying the minimum value of the maximum charge power values per parallel of each of the plurality of storage batteries by the total number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries When the maximum charge / discharge power value calculation unit and the total charge request value are not less than or equal to the system maximum charge power value and the variation in the remaining amount of the plurality of storage batteries is greater than or equal to a certain value, the system maximum charge power value is comprehensively charged. As the request value, the total charge request value is multiplied by the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries, and the result of the multiplication is the number of chargeable columns for correcting the remaining amount of the plurality of storage batteries. The charge command value for each of the plurality of AC / DC converters is calculated by dividing by the total value of the plurality of AC / DC converters, the total charge request value is not less than or equal to the maximum charge power value, and the variation in the remaining amount of the plurality of storage batteries is constant If the value is less than The total charge request value is multiplied by the maximum charge power value of each of the plurality of AC / DC converters, and the result of the multiplication is divided by the total value of the maximum charge power values of the plurality of AC / DC converters. A charge / discharge command value calculation unit for calculating a charge command value for each of the AC / DC converters.

この発明に係る蓄電池の残量管理装置は、複数の蓄電池の各々において複数の蓄電池モジュールが並列に接続されており、前記複数の蓄電池の各々からの直流電力を複数の交直変換装置の各々により交流電力に変換して当該交流電力を電力系統に供給する電力供給システムにおいて、前記複数の蓄電池の各々の残量から前記複数の蓄電池の残量の平均値を減算した値に基づいて、前記複数の蓄電池の各々の残量補正用の放電可能列数を演算する充放電可能数演算部と、前記複数の交直変換装置の各々の最大放電電力値を前記複数の交直変換装置の各々に対応する蓄電池の残量補正用の放電可能列数で除算することで、前記複数の交直変換装置の各々の1並列当たりの最大放電電力値を演算する最大充放電電力値演算部と、前記複数の交直変換装置の各々の1並列当たりの最大放電電力値のうちの最小値に前記複数の蓄電池の各々の残量補正用の放電可能列数の合計を乗算することで、システム最大放電電力値を演算するシステム最大充放電電力値演算部と、総合放電要求値が前記システム最大放電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値以上の場合は、前記システム最大放電電力値を総合放電要求値として、当該総合放電要求値に前記複数の蓄電池の各々の残量補正用の放電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の放電可能列数の合計値で除算することで、前記複数の交直変換装置の各々に対する放電指令値を演算し、総合放電要求値が前記最大放電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合放電要求値に前記複数の交直変換装置の各々の最大放電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置の最大放電電力値の合計値で除算することで、前記複数の交直変換装置の各々に対する放電指令値を演算する充放電指令値演算部と、を備えた。   In the storage battery remaining amount management device according to the present invention, a plurality of storage battery modules are connected in parallel in each of the plurality of storage batteries, and direct current power from each of the plurality of storage batteries is AC-converted by each of the plurality of AC / DC converters. In the power supply system that converts the electric power and supplies the AC power to the electric power system, based on a value obtained by subtracting an average value of the remaining amount of the plurality of storage batteries from the remaining amount of each of the plurality of storage batteries, A chargeable / dischargeable number calculating section for calculating the number of dischargeable columns for correcting the remaining amount of each of the storage batteries, and a storage battery corresponding to each of the plurality of AC / DC converters with a maximum discharge power value of each of the plurality of AC / DC converters A maximum charge / discharge power value calculation unit for calculating a maximum discharge power value per parallel of each of the plurality of AC / DC converters by dividing by the number of dischargeable columns for remaining amount correction, and the plurality of AC / DC conversions The system maximum discharge power value is calculated by multiplying the minimum value among the maximum discharge power values per parallel of each of the devices by the total number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries. When the system maximum charge / discharge power value calculation unit and the total discharge request value are not less than or equal to the system maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries is greater than or equal to a certain value, the system maximum discharge power value is integrated As the required discharge value, the total required discharge value is multiplied by the number of dischargeable columns for correcting the remaining amount of each of the storage batteries, and the result of the multiplication is discharged for correcting the remaining amount of the plurality of storage batteries. By dividing by the total value of the number, the discharge command value for each of the plurality of AC / DC converters is calculated, and the total discharge request value is not less than or equal to the maximum discharge power value, and there is a variation in the remaining amount of the plurality of storage batteries. If less than a certain value The total discharge request value is multiplied by the maximum discharge power value of each of the plurality of AC / DC converters, and the result of the multiplication is divided by the total value of the maximum discharge power values of the plurality of AC / DC converters. A charge / discharge command value calculation unit for calculating a discharge command value for each of the plurality of AC / DC converters.

これらの発明によれば、総合充電要求値が前記システム最大充電電力値以下でなく、複数の蓄電池の残量のばらつきが一定値以上の場合は、システム最大充電電力値を総合充電要求値として、当該総合充電要求値に複数の蓄電池の各々の残量補正用の充電可能列数を乗算し、当該乗算の結果を複数の畜電池の残量補正用の充電可能列数の合計値で除算することで、複数の交直変換装置の各々に対する充電指令値が演算される。総合充電要求値が最大充電電力値以下でなく、複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合充電要求値に複数の交直変換装置の各々の最大充電電力値を乗算し、当該乗算の結果を複数の交直変換装置の最大充電電力値の合計値で除算することで、複数の交直変換装置の各々に対する充電指令値が演算される。総合放電要求値がシステム最大放電電力値以下でなく、複数の蓄電池の残量のばらつきが一定値以上の場合は、システム最大放電電力値を総合放電要求値として、当該総合放電要求値に複数の蓄電池の各々の残量補正用の放電可能列数を乗算し、当該乗算の結果を複数の畜電池の残量補正用の放電可能列数の合計値で除算することで、複数の交直変換装置の各々に対する放電指令値を演算し、総合放電要求値が最大放電電力値以下でなく、複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合放電要求値に複数の交直変換装置の各々の最大放電電力値を乗算し、当該乗算の結果を複数の交直変換装置の最大放電電力値の合計値で除算することで、複数の交直変換装置の各々に対する放電指令値が演算される。このため、複数の蓄電池の残量を均一に保ちつつ、必要時には要求値に対応できる。   According to these inventions, if the total charge request value is not less than or equal to the system maximum charge power value, and the variation in the remaining amount of the plurality of storage batteries is greater than or equal to a certain value, the system maximum charge power value as the total charge request value, The total charge request value is multiplied by the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries, and the result of the multiplication is divided by the total number of chargeable columns for correcting the remaining amount of the plurality of storage batteries. Thus, the charge command value for each of the plurality of AC / DC converters is calculated. When the total charge request value is not less than the maximum charge power value and the variation in the remaining amount of the plurality of storage batteries is less than a certain value, the total charge request value is multiplied by the maximum charge power value of each of the plurality of AC / DC converters. The charging command value for each of the plurality of AC / DC converters is calculated by dividing the multiplication result by the total value of the maximum charging power values of the AC / DC converters. When the total discharge request value is not less than the system maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries is a certain value or more, the system maximum discharge power value is set as the total discharge request value, A plurality of AC / DC converters by multiplying the number of dischargeable columns for correcting the remaining amount of each storage battery and dividing the result of the multiplication by the total number of dischargeable columns for correcting the remaining amount of the plurality of storage batteries If the total discharge request value is not less than the maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries is less than a certain value, a plurality of AC / DC converters are converted into the total discharge request value. The discharge command value for each of the plurality of AC / DC converters is calculated by multiplying the maximum discharge power value of each of the AC / DC converters and dividing the result of multiplication by the total value of the maximum discharge power values of the plurality of AC / DC converters. . For this reason, it is possible to meet the required value when necessary while keeping the remaining amounts of the plurality of storage batteries uniform.

この発明の実施の形態1における蓄電池の残量管理装置が適用される電力供給システムの構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the electric power supply system with which the residual amount management apparatus of the storage battery in Embodiment 1 of this invention is applied. この発明の実施の形態1における蓄電池の残量管理装置が適用される電力供給システムの要部の構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the principal part of the electric power supply system with which the residual amount management apparatus of the storage battery in Embodiment 1 of this invention is applied. この発明の実施の形態1における蓄電池の残量管理装置の動作を説明するためのフローチャートである。It is a flowchart for demonstrating operation | movement of the storage battery residual amount management apparatus in Embodiment 1 of this invention. この発明の実施の形態1における蓄電池の残量管理装置の動作を説明するためのフローチャートである。It is a flowchart for demonstrating operation | movement of the storage battery residual amount management apparatus in Embodiment 1 of this invention. この発明の実施の形態1における蓄電池の残量管理装置のハードウェア構成図である。It is a hardware block diagram of the storage battery residual amount management apparatus in Embodiment 1 of this invention.

この発明を実施するための形態について添付の図面に従って説明する。なお、各図中、同一又は相当する部分には同一の符号が付される。当該部分の重複説明は適宜に簡略化ないし省略する。   A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or it corresponds in each figure. The overlapping explanation of the part is appropriately simplified or omitted.

実施の形態1.
図1はこの発明の実施の形態1における蓄電池の残量管理装置が適用される電力供給システムの構成図である。
Embodiment 1 FIG.
1 is a configuration diagram of a power supply system to which a storage battery remaining amount management device according to Embodiment 1 of the present invention is applied.

図1において、電力供給システムは、電力系統1と複数の蓄電池2と複数の交直変換装置(PCS)3と複数の変圧器4と複数のバッテリコントロール(BMU)5と充放電指示装置6と残量管理装置7とを備える。   In FIG. 1, the power supply system includes an electric power system 1, a plurality of storage batteries 2, a plurality of AC / DC converters (PCS) 3, a plurality of transformers 4, a plurality of battery controls (BMU) 5, a charge / discharge instruction device 6, A quantity management device 7;

電力系統1は、図示されない交流負荷に接続される。   The electric power system 1 is connected to an AC load (not shown).

複数の蓄電池2の各々は、ケース8と複数の蓄電池モジュール9とを備える。ケース8は、蓄電池2の外郭となる。複数の蓄電池モジュール9は、ケース8に収納される。複数の蓄電池モジュール9は、互いに並列に接続される。複数の蓄電池モジュール9の各々は、複数の電池セル10とヒューズ11とを備える。複数の電池セル10は、蓄電池2の最小単位である。複数の電池セル10は、互いに直列に接続される。ヒューズ11は、複数の電池セル10に直列に接続される。   Each of the plurality of storage batteries 2 includes a case 8 and a plurality of storage battery modules 9. The case 8 is an outline of the storage battery 2. The plurality of storage battery modules 9 are housed in the case 8. The plurality of storage battery modules 9 are connected in parallel to each other. Each of the plurality of storage battery modules 9 includes a plurality of battery cells 10 and a fuse 11. The plurality of battery cells 10 is a minimum unit of the storage battery 2. The plurality of battery cells 10 are connected in series with each other. The fuse 11 is connected to the plurality of battery cells 10 in series.

複数の交直変換装置3の各々は、電力系統1からの交流電力を直流電力に変換して当該直流電力を複数の蓄電池2の各々に供給し得るように設けられる。複数の交直変換装置3の各々は、複数の蓄電池2の各々からの直流電力を交流電力に変換して当該交流電力を電力系統1に供給し得るように設けられる。   Each of the plurality of AC / DC converters 3 is provided so as to convert AC power from the power system 1 into DC power and supply the DC power to each of the plurality of storage batteries 2. Each of the plurality of AC / DC converters 3 is provided so as to convert DC power from each of the plurality of storage batteries 2 into AC power and supply the AC power to the power system 1.

複数の変圧器4の各々は、電力系統1と複数の交直変換装置3の各々の間の交流電力の電圧を変化させ得るように設けられる。   Each of the plurality of transformers 4 is provided such that the voltage of the AC power between each of the power system 1 and each of the plurality of AC / DC converters 3 can be changed.

例えば、複数のバッテリコントロール5(BMU)の各々は、複数の蓄電池2の各々の温度と過放電と過充電と残量(SOC)を監視し得るように設けられる。   For example, each of the plurality of battery controls 5 (BMU) is provided so as to be able to monitor the temperature, overdischarge, overcharge, and remaining amount (SOC) of each of the plurality of storage batteries 2.

充放電指示装置6は、複数の蓄電池2に対する充放電を指示し得るように設けられる。例えば、充放電指示装置6は、電力使用量と太陽電池と風力発電と蓄電池2とによる電力供給量と電力会社の買電量との監視結果および制御結果に基づいて複数の蓄電池2に対する総合充電要求値または総合放電要求値を演算する。   The charge / discharge instruction apparatus 6 is provided so as to instruct charge / discharge of the plurality of storage batteries 2. For example, the charging / discharging instruction device 6 requests the total charge to a plurality of storage batteries 2 based on the monitoring results and control results of the power consumption, the solar battery, the wind power generation, the storage battery 2 and the power supply amount of the power company. Value or total discharge request value.

残量管理装置7は、複数の蓄電池2の残量のばらつきに応じて制御内容を変化させるハイブリッド制御を行う。具体的には、充放電可能数演算部7aと最大充放電電力値演算部7bとシステム最大充放電電力値演算部7cと充放電指令値演算部7dとを備える。   The remaining amount management device 7 performs hybrid control that changes the control content in accordance with variations in the remaining amounts of the plurality of storage batteries 2. Specifically, it includes a chargeable / dischargeable number calculation unit 7a, a maximum charge / discharge power value calculation unit 7b, a system maximum charge / discharge power value calculation unit 7c, and a charge / discharge command value calculation unit 7d.

充放電可能数演算部7aは、複数の蓄電池2の各々の残量から複数の蓄電池2の残量の平均値を減算した値に基づいて、複数の蓄電池2の各々の残量補正用の充電可能列数を演算する。最大充放電電力値演算部7bは、複数の交直変換装置3の各々の最大充電電力値を複数の交直変換装置3の各々に対応する蓄電池2の残量補正用の充電可能列数で除算することで、複数の交直変換装置3の各々の1並列当たりの最大充電電力値を演算する。システム最大充放電電力値演算部7cは、複数の交直変換装置3の各々の1並列当たりの最大充電電力値のうちの最小値に複数の蓄電池2の各々の残量補正用の充電可能列数の合計を乗算することで、システム最大充電電力値を演算する。充放電指令値演算部7dは、総合充電要求値がシステム最大充電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値以上の場合は、システム最大充電電力値を総合充電要求値として、当該総合充電要求値に前記複数の蓄電池2の各々の残量補正用の充電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の充電可能列数の合計値で除算することで、複数の交直変換装置3の各々に対する充電指令値を演算する。充放電指令値演算部7dは、総合充電要求値が最大充電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値未満の場合は、当該総合充電要求値に前記複数の交直変換装置3の各々の最大充電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置3の最大充電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する充電指令値を演算する。   The chargeable / dischargeable number calculating section 7a is configured to charge the remaining amount of each of the plurality of storage batteries 2 based on a value obtained by subtracting the average value of the remaining amounts of the plurality of storage batteries 2 from the remaining amount of each of the plurality of storage batteries 2. Calculate the number of possible columns. The maximum charge / discharge power value calculation unit 7 b divides the maximum charge power value of each of the plurality of AC / DC converters 3 by the number of chargeable columns for correcting the remaining amount of the storage battery 2 corresponding to each of the plurality of AC / DC converters 3. Thus, the maximum charge power value per parallel of each of the plurality of AC / DC converters 3 is calculated. The system maximum charge / discharge power value calculation unit 7c is set to the minimum value of the maximum charge power values per parallel of each of the plurality of AC / DC converters 3, and the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2. The system maximum charging power value is calculated by multiplying the sum of When the total charge request value is not less than the system maximum charge power value and the variation in the remaining amount of the plurality of storage batteries 2 is greater than or equal to a certain value, the charge / discharge command value calculation unit 7d determines the system maximum charge power value as the total charge request value. Multiplying the total charge request value by the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2, and the result of the multiplication is the number of chargeable columns for correcting the remaining amount of the plurality of batteries. By dividing by the total value, a charge command value for each of the plurality of AC / DC converters 3 is calculated. When the total charge request value is not less than or equal to the maximum charge power value and the variation in the remaining amount of the plurality of storage batteries 2 is less than a predetermined value, the charge / discharge command value calculation unit 7d converts the plurality of AC / DC conversions into the total charge request value. A charging command for each of the plurality of AC / DC converters 3 is obtained by multiplying the maximum charging power value of each of the devices 3 and dividing the result of the multiplication by the total value of the maximum charging power values of the plurality of AC / DC converters 3. Calculate the value.

充放電可能数演算部7aは、複数の蓄電池2の各々の残量に複数の蓄電池2の残量の平均値を加算した値に基づいて複数の蓄電池2の各々の残量補正用の放電可能列数を演算する。最大充放電電力値演算部7bは、複数の交直変換装置3の各々の最大放電電力値を複数の交直変換装置3の各々に対応する蓄電池2の残量補正用の放電可能列数で除算することで、複数の交直変換装置3の各々の1並列当たりの最大放電電力値を演算する。システム最大充放電電力値演算部7cは、複数の交直変換装置3の各々の1並列当たりの最大放電電力値のうちの最小値に複数の蓄電池2の各々の残量補正用の放電可能列数の合計を乗算することで、システム最大放電電力値を演算する。充放電指令値演算部7dは、総合放電要求値がシステム最大放電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値以上の場合は、システム最大放電電力値を総合放電要求値として、当該総合放電要求値に前記複数の蓄電池2の各々の残量補正用の放電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の放電可能列数の合計値で除算することで、複数の交直変換装置3の各々に対する放電指令値を演算する。充放電指令値演算部7dは、総合放電要求値が最大放電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値未満の場合は、当該総合放電要求値に前記複数の交直変換装置3の各々の最大放電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置3の最大放電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する放電指令値を演算する。   The chargeable / dischargeable number calculating section 7a is capable of discharging for correcting the remaining amount of each of the plurality of storage batteries 2 based on a value obtained by adding the average value of the remaining amount of the plurality of storage batteries 2 to the remaining amount of each of the plurality of storage batteries 2. Calculate the number of columns. The maximum charge / discharge power value calculation unit 7 b divides the maximum discharge power value of each of the plurality of AC / DC converters 3 by the number of dischargeable columns for correcting the remaining amount of the storage battery 2 corresponding to each of the plurality of AC / DC converters 3. Thus, the maximum discharge power value per parallel of each of the plurality of AC / DC converters 3 is calculated. The system maximum charge / discharge power value calculation unit 7c is set to the minimum value of the maximum discharge power values per parallel of each of the plurality of AC / DC converters 3, and the number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2. The system maximum discharge power value is calculated by multiplying the sum of. The charge / discharge command value calculation unit 7d determines the system maximum discharge power value when the total discharge request value is not equal to or less than the system maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries 2 is equal to or greater than a certain value. As a result of multiplying the total discharge request value by the number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2, the result of the multiplication is calculated as the number of dischargeable columns for correcting the remaining amount of the plurality of storage batteries. By dividing by the total value, a discharge command value for each of the plurality of AC / DC converters 3 is calculated. When the total discharge request value is not less than or equal to the maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries 2 is less than a certain value, the charge / discharge command value calculation unit 7d converts the plurality of AC / DC conversions into the total discharge request value. By multiplying the maximum discharge power value of each of the devices 3 and dividing the result of the multiplication by the total value of the maximum discharge power values of the plurality of AC / DC converters 3, a discharge command for each of the plurality of AC / DC converters 3 is obtained. Calculate the value.

次に、図2を用いて、残量管理装置7による蓄電池2の残量の管理方法を説明する。
図2はこの発明の実施の形態1における蓄電池の残量管理装置が適用される電力供給システムの要部の構成図である。
Next, a method for managing the remaining amount of the storage battery 2 by the remaining amount management device 7 will be described with reference to FIG.
2 is a configuration diagram of a main part of a power supply system to which the storage battery remaining amount management device according to Embodiment 1 of the present invention is applied.

図2において、左側の蓄電池2は、A社製の蓄電池である。右側の蓄電池2は、B社製の蓄電池である。   In FIG. 2, the storage battery 2 on the left is a storage battery manufactured by A company. The storage battery 2 on the right side is a storage battery manufactured by B company.

左側の蓄電池2の2つの蓄電池モジュール9において、蓄電池モジュール9の1列当たりの容量は、100kWhである。100kWhが基準とされた場合、蓄電池モジュール9の1列当たりの容量比は、1.0である。蓄電池2の残量は、50%である。   In the two storage battery modules 9 of the storage battery 2 on the left side, the capacity per row of the storage battery modules 9 is 100 kWh. When 100 kWh is used as a reference, the capacity ratio per row of the storage battery modules 9 is 1.0. The remaining amount of the storage battery 2 is 50%.

右側の蓄電池2の2つの蓄電池モジュール9において、蓄電池モジュール9の1列当たりの容量は、50kWhである。100kWhが基準とされた場合、蓄電池モジュール9の1列当たりの容量比は、0.5である。蓄電池2の残量は、50%である。   In the two storage battery modules 9 of the storage battery 2 on the right side, the capacity per one row of the storage battery modules 9 is 50 kWh. When 100 kWh is used as a reference, the capacity ratio per row of the storage battery modules 9 is 0.5. The remaining amount of the storage battery 2 is 50%.

この状態において、200kWの総合放電要求があった際、左側の交直変換装置3と右側の交直変換装置3とが100kwを出力すると、左側の蓄電池2の蓄電量の減る割合が大きい。   In this state, when there is a total discharge request of 200 kW, if the left AC / DC converter 3 and the right AC / DC converter 3 output 100 kW, the rate of reduction of the charged amount of the left storage battery 2 is large.

これに対し、左側の交直変換装置3と右側の交直変換装置3とに対して蓄電池2の残量が一定値となるようにすると、左側の交直変換装置3の出力は、133kWとなる。右側の交直変換装置3の出力は、67kWとなる。   On the other hand, when the remaining amount of the storage battery 2 is set to a constant value with respect to the left AC / DC converter 3 and the right AC / DC converter 3, the output of the left AC / DC converter 3 becomes 133 kW. The output of the AC / DC converter 3 on the right side is 67 kW.

しかしながら、左側の交直変換装置3と右側の交直変換装置3との最大出力値が100kWである場合、実際には、左側の交直変換装置3の出力値は、100kWとなる。右側の交直変換装置3の出力値は、50kWとなる。その結果、200kWの総合放電要求値に対応できない。   However, when the maximum output value of the left AC / DC converter 3 and the right AC / DC converter 3 is 100 kW, the output value of the left AC / DC converter 3 is actually 100 kW. The output value of the AC / DC converter 3 on the right side is 50 kW. As a result, the total discharge requirement value of 200 kW cannot be accommodated.

この際、左側の蓄電池2の残量と右側の蓄電池2の残量とのばらつきが一定値以内であれば、残量管理装置7は、左側の蓄電池2の残量と右側の蓄電池2の残量とを均一にする放電指令値を演算せずに総合放電要求値に対応した出力が行われるように放電指令値を演算する。具体的には、残量管理装置7は、左側の交直変換装置3に対する放電指令値を100kWとする。残量管理装置7は、右側の交直変換装置3に対する放電指令値を100kWとする。   At this time, if the variation between the remaining amount of the left storage battery 2 and the remaining amount of the right storage battery 2 is within a certain value, the remaining amount management device 7 determines the remaining amount of the left storage battery 2 and the remaining amount of the right storage battery 2. The discharge command value is calculated so that the output corresponding to the total discharge request value is performed without calculating the discharge command value that equalizes the amount. Specifically, the remaining amount management device 7 sets the discharge command value for the AC / DC converter 3 on the left side to 100 kW. The remaining amount management device 7 sets the discharge command value for the AC / DC converter 3 on the right side to 100 kW.

次に、図3と図4とを用いて、残量管理装置7の動作を説明する。
図3と図4とはこの発明の実施の形態1における蓄電池の残量管理装置の動作を説明するためのフローチャートである。
Next, the operation of the remaining amount management device 7 will be described with reference to FIGS. 3 and 4.
3 and 4 are flowcharts for explaining the operation of the storage battery remaining amount management apparatus according to Embodiment 1 of the present invention.

ステップS1では、残量管理装置7は、複数の蓄電池2の各々における蓄電池モジュール9の並列数の情報と複数の蓄電池2の各々の残量の情報とを取得する。   In Step S <b> 1, the remaining amount management device 7 acquires information on the number of parallel storage battery modules 9 in each of the plurality of storage batteries 2 and information on the remaining amount of each of the plurality of storage batteries 2.

その後、残量管理装置7は、ステップS2の動作を行う。ステップS2では、残量管理装置7は、複数の蓄電池2の各々における蓄電池モジュール9の並列数から、複数の蓄電池2の各々の残量から複数の蓄電池2の残量の平均値を減算した値を減算することで、複数の蓄電池2の各々の残量補正用の充電可能列数を演算する。この際、残量管理装置7は、複数の蓄電池2の各々の残量から複数の蓄電池2の残量の平均値を減算した値を10等のパラメータで除算する。残量管理装置7は、複数の蓄電池2の各々における蓄電池モジュール9の並列数に、複数の蓄電池2の各々の残量から複数の蓄電池2の残量の平均値を減算した値を加算することで、複数の蓄電池2の各々の残量補正用の放電可能列数を演算する。この際、残量管理装置7は、複数の蓄電池2の各々の残量から複数の蓄電池2の残量の平均値を減算した値を10等のパラメータで除算する。複数の蓄電池2の各々において、残量補正用の放電可能列数/残量補正用の充電可能列数がマイナスとなる場合、残量補正用の放電可能列数と残量補正用の充電可能列数とは、「0」とされる。   Thereafter, the remaining amount management device 7 performs the operation of step S2. In Step S <b> 2, the remaining amount management device 7 subtracts the average value of the remaining amounts of the plurality of storage batteries 2 from the remaining amount of each of the plurality of storage batteries 2 from the parallel number of the storage battery modules 9 in each of the plurality of storage batteries 2. Is subtracted to calculate the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2. At this time, the remaining amount management device 7 divides the value obtained by subtracting the average value of the remaining amounts of the plurality of storage batteries 2 from the remaining amount of each of the plurality of storage batteries 2 by a parameter such as 10. The remaining amount management device 7 adds a value obtained by subtracting the average value of the remaining amount of the plurality of storage batteries 2 from the remaining amount of each of the plurality of storage batteries 2 to the parallel number of the storage battery modules 9 in each of the plurality of storage batteries 2. Thus, the number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2 is calculated. At this time, the remaining amount management device 7 divides the value obtained by subtracting the average value of the remaining amounts of the plurality of storage batteries 2 from the remaining amount of each of the plurality of storage batteries 2 by a parameter such as 10. In each of the plurality of storage batteries 2, when the number of dischargeable columns for remaining amount correction / the number of chargeable columns for remaining amount correction is negative, the number of dischargeable columns for remaining amount correction and charge for remaining amount correction are possible. The number of columns is “0”.

その後、残量管理装置7は、ステップS3の動作を行う。ステップS3では、残量管理装置7は、複数の交直変換装置3の各々の最大充電電力値を複数の交直変換装置3の各々に対応する蓄電池2の残量補正用の充電可能列数で除算することで、複数の交直変換装置3の各々の1並列当たりの最大充電電力値を演算する。残量管理装置7は、複数の交直変換装置3の各々の最大放電電力値を複数の交直変換装置3の各々に対応する蓄電池2の残量補正用の放電可能列数で除算することで、複数の交直変換装置3の各々の1並列当たりの最大放電電力値を演算する。   Thereafter, the remaining amount management device 7 performs the operation of step S3. In step S <b> 3, the remaining amount management device 7 divides the maximum charging power value of each of the plurality of AC / DC converters 3 by the number of chargeable columns for correcting the remaining amount of the storage battery 2 corresponding to each of the plurality of AC / DC converters 3. By doing so, the maximum charge power value per parallel of each of the plurality of AC / DC converters 3 is calculated. The remaining amount management device 7 divides the maximum discharge power value of each of the plurality of AC / DC converters 3 by the number of dischargeable columns for correcting the remaining amount of the storage battery 2 corresponding to each of the plurality of AC / DC converters 3, The maximum discharge power value per parallel of each of the plurality of AC / DC converters 3 is calculated.

その後、残量管理装置7は、ステップS4の動作を行う。ステップS4では、残量管理装置7は、複数の交直変換装置3の各々の1並列当たりの最大充電電力値のうちの最小値に複数の蓄電池2の各々の残量補正用の充電可能列数の合計を乗算することで、システム最大充電電力値を演算する。残量管理装置7は、複数の交直変換装置3の各々の1並列当たりの最大放電電力値のうちの最小値に複数の蓄電池2の各々の残量補正用の放電可能列数の合計を乗算することで、システム最大放電電力値を演算する。   Thereafter, the remaining amount management device 7 performs the operation of step S4. In step S <b> 4, the remaining amount management device 7 sets the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2 to the minimum value of the maximum charging power value per parallel of each of the plurality of AC / DC converters 3. The system maximum charging power value is calculated by multiplying the sum of The remaining amount management device 7 multiplies the minimum value of the maximum discharge power value per parallel of each of the plurality of AC / DC converters 3 by the total number of dischargeable columns for remaining amount correction of each of the plurality of storage batteries 2. Thus, the system maximum discharge power value is calculated.

その後、残量管理装置7は、ステップS5の動作を行う。ステップS5では、残量管理装置7は、充放電指示装置6からの充電要求または放電要求があるか否かを判定する。ステップS5で充放電指示装置6からの充電要求および放電要求がない場合、残量管理装置7は、ステップS1の動作を行う。ステップS5で充放電指示装置6からの充電要求または放電要求がある場合、残量管理装置7は、ステップS6の動作を行う。   Thereafter, the remaining amount management device 7 performs the operation of step S5. In step S <b> 5, the remaining amount management device 7 determines whether there is a charge request or a discharge request from the charge / discharge instruction device 6. When there is no charge request or discharge request from the charge / discharge instruction device 6 in step S5, the remaining amount management device 7 performs the operation of step S1. When there is a charge request or a discharge request from the charge / discharge instruction device 6 in step S5, the remaining amount management device 7 performs the operation of step S6.

ステップS6では、残量管理装置7は、充放電指示装置6からの要求に応じた判定処理の結果を判定する。具体的は、充放電指示装置6からの要求が充電要求である場合、残量管理装置7は、総合充電要求値がシステム最大充電電力値以下である否かを判定する。充放電指示装置6からの要求が放電要求である場合、残量管理装置7は、総合放電要求値がシステム最大放電電力値以下であるか否かを判定する。   In step S <b> 6, the remaining amount management device 7 determines the result of the determination process according to the request from the charge / discharge instruction device 6. Specifically, when the request from the charge / discharge instruction device 6 is a charge request, the remaining amount management device 7 determines whether or not the total charge request value is equal to or less than the system maximum charge power value. When the request from the charge / discharge instruction device 6 is a discharge request, the remaining amount management device 7 determines whether the total discharge request value is equal to or less than the system maximum discharge power value.

ステップS6の判定が肯定的である場合、残量管理装置7は、ステップS7の動作を行う。ステップS7では、残量管理装置7は、複数の交直変換装置3の各々に対する指令値を演算する。具体的には、充放電指示装置6からの要求が充電要求である場合、残量管理装置7は、総合充電要求値に複数の蓄電池2の各々の残量補正用の充電可能列数を乗算し、当該乗算の結果を複数の畜電池の残量補正用の充電可能列数の合計値で除算することで、複数の交直変換装置3の各々に対する充電指令値を演算する。充放電指示装置6からの要求が放電要求である場合、残量管理装置7は、総合放電要求値に複数の蓄電池2の各々の残量補正用の放電可能列数を乗算し、当該乗算の結果を複数の畜電池の残量補正用の放電可能列数の合計値で除算することで、複数の交直変換装置3の各々に対する放電指令値を演算する。   If the determination in step S6 is affirmative, the remaining amount management device 7 performs the operation in step S7. In step S <b> 7, the remaining amount management device 7 calculates a command value for each of the plurality of AC / DC converters 3. Specifically, when the request from the charge / discharge instruction device 6 is a charge request, the remaining amount management device 7 multiplies the total charge request value by the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2. Then, the charge command value for each of the plurality of AC / DC converters 3 is calculated by dividing the multiplication result by the total value of the number of chargeable columns for correcting the remaining amount of the plurality of batteries. When the request from the charge / discharge instruction device 6 is a discharge request, the remaining amount management device 7 multiplies the total discharge request value by the number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries 2, and performs the multiplication. A discharge command value for each of the plurality of AC / DC converters 3 is calculated by dividing the result by the total number of dischargeable columns for correcting the remaining amount of the plurality of batteries.

その後、残量管理装置7は、ステップS8の動作を行う。ステップS8では、残量管理装置7は、複数の交直変換装置3に対する指令値を出力する。具体的には、充放電指示装置6からの要求が充電要求である場合、残量管理装置7は、複数の交直変換装置3に対する充電指令値を出力する。充放電指示装置6からの要求が放電要求である場合、残量管理装置7は、複数の交直変換装置3に対する放電指令値を出力する。   Thereafter, the remaining amount management device 7 performs the operation of step S8. In step S <b> 8, the remaining amount management device 7 outputs command values for the plurality of AC / DC converters 3. Specifically, when the request from the charge / discharge instruction device 6 is a charge request, the remaining amount management device 7 outputs charge command values for the plurality of AC / DC converters 3. When the request from the charge / discharge instruction device 6 is a discharge request, the remaining amount management device 7 outputs discharge command values for the plurality of AC / DC converters 3.

ステップS6の判定が否定的である場合、残量管理装置7は、ステップS9の動作を行う。ステップS9では、残量管理装置7は、複数の蓄電池2の残量のばらつきが一定値以上または複数の電池セル10の電圧の差が一定値以上であるか否かを判定する。   If the determination in step S6 is negative, the remaining amount management device 7 performs the operation in step S9. In step S <b> 9, the remaining amount management device 7 determines whether or not the variation in the remaining amount of the plurality of storage batteries 2 is a certain value or more, or whether the voltage difference between the plurality of battery cells 10 is a certain value or more.

ステップS9の判定が肯定的である場合、残量管理装置7は、ステップS10の動作を行う。ステップS10では、残量管理装置7は、充放電指示装置6からの要求値を変更する。具体的には、充放電指示装置6からの要求が充電要求である場合、残量管理装置7は、総合充電要求値をシステム最大充電値とする。充放電指示装置6からの要求が放電要求である場合、残量管理装置7は、総合放電要求値をシステム最大放電値とする。その後、残量管理装置7は、ステップSS7の動作を行う。   If the determination in step S9 is affirmative, the remaining amount management device 7 performs the operation in step S10. In step S <b> 10, the remaining amount management device 7 changes the request value from the charge / discharge instruction device 6. Specifically, when the request from the charge / discharge instruction device 6 is a charge request, the remaining amount management device 7 sets the total charge request value as the system maximum charge value. When the request from the charge / discharge instruction device 6 is a discharge request, the remaining amount management device 7 sets the total discharge request value as the system maximum discharge value. Thereafter, the remaining amount management device 7 performs the operation of Step SS7.

ステップS9の判定が否定的である場合、残量管理装置7は、ステップS11の動作を行う。ステップS11では、残量管理装置7は、複数の交直変換装置3の各々に対する指令値を演算する。具体的には、充放電指示装置6からの要求が充電要求である場合、残量管理装置7は、総合充電要求値に前記複数の交直変換装置3の各々の最大充電電力値を乗算し、当該乗算の結果を複数の交直変換装置3の最大充電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する充電指令値を演算する。総合充電要求値が複数の交直変換装置3の最大充電電力値の合計値よりも大きい場合、残量管理装置7は、総合充電要求値を複数の交直変換装置3の最大充電電力値の合計値とする。充放電指示装置6からの要求が放電要求である場合、残量管理装置7は、当該総合放電要求値に複数の交直変換装置3の各々の最大放電電力値を乗算し、当該乗算の結果を複数の交直変換装置3の最大放電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する放電指令値を演算する。総合放電要求値が複数の交直変換装置3の最大放電電力値の合計値よりも大きい場合、残量管理装置7は、総合放電要求値を複数の交直変換装置3の最大放電電力値の合計値とする。その後、残量管理装置7は、ステップS8の動作を行う。   If the determination in step S9 is negative, the remaining amount management device 7 performs the operation in step S11. In step S <b> 11, the remaining amount management device 7 calculates a command value for each of the plurality of AC / DC converters 3. Specifically, when the request from the charge / discharge instruction device 6 is a charge request, the remaining amount management device 7 multiplies the total charge request value by the maximum charge power value of each of the plurality of AC / DC converters 3, A charge command value for each of the plurality of AC / DC converters 3 is calculated by dividing the result of the multiplication by the total value of the maximum charging power values of the plurality of AC / DC converters 3. When the total charge request value is larger than the total value of the maximum charge power values of the plurality of AC / DC converters 3, the remaining amount management device 7 sets the total charge request value to the total value of the maximum charge power values of the plurality of AC / DC converters 3. And When the request from the charge / discharge instruction device 6 is a discharge request, the remaining amount management device 7 multiplies the total discharge request value by the maximum discharge power value of each of the plurality of AC / DC converters 3, and uses the result of the multiplication. A discharge command value for each of the plurality of AC / DC converters 3 is calculated by dividing the sum of the maximum discharge power values of the plurality of AC / DC converters 3. When the total discharge request value is larger than the total value of the maximum discharge power values of the plurality of AC / DC converters 3, the remaining amount management device 7 sets the total discharge request value to the total value of the maximum discharge power values of the plurality of AC / DC converters 3. And Thereafter, the remaining amount management device 7 performs the operation of step S8.

以上で説明した実施の形態1によれば、総合充電要求値が最大充電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値未満の場合は、当該総合充電要求値に複数の交直変換装置3の各々の最大充電電力値を乗算し、当該乗算の結果を複数の交直変換装置3の最大充電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する充電指令値が演算される。このため、複数の蓄電池2の残量を均一に保ちつつ、必要時には総合充電要求値に対応できる。   According to the first embodiment described above, when the total charge request value is not less than the maximum charge power value and the variation in the remaining amount of the plurality of storage batteries 2 is less than a certain value, the total charge request value includes a plurality of Charging each of the plurality of AC / DC converters 3 by multiplying the maximum charging power value of each of the AC / DC converters 3 and dividing the result of the multiplication by the total value of the maximum charging power values of the plurality of AC / DC converters 3. The command value is calculated. For this reason, it can respond to the total charge request value when necessary while keeping the remaining amount of the plurality of storage batteries 2 uniform.

また、総合充電要求値が複数の交直変換装置3の最大充電電力値の合計値よりも大きい場合、複数の交直変換装置3の各々に対する充電指令値を演算する際に用いる総合充電要求値は、複数の交直変換装置3の最大充電電力値の合計値となる。このため、総合充電要求値に対応できない場合でも、複数の蓄電池2において可能な限りの充電を行うことができる。   Moreover, when the total charge request value is larger than the total value of the maximum charge power values of the plurality of AC / DC converters 3, the total charge request value used when calculating the charge command value for each of the plurality of AC / DC converters 3 is: This is the sum of the maximum charge power values of the plurality of AC / DC converters 3. For this reason, even when it cannot respond | correspond to a total charge request value, the charge as much as possible in the some storage battery 2 can be performed.

また、総合放電要求値が最大放電電力値以下でなく、複数の蓄電池2の残量のばらつきが一定値未満の場合は、当該総合放電要求値に複数の交直変換装置3の各々の最大放電電力値を乗算し、当該乗算の結果を複数の交直変換装置3の最大放電電力値の合計値で除算することで、複数の交直変換装置3の各々に対する放電指令値が演算される。このため、複数の蓄電池2の残量を均一に保ちつつ、必要時には総合放電要求値に対応できる。   When the total discharge request value is not less than the maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries 2 is less than a certain value, the maximum discharge power of each of the plurality of AC / DC converters 3 is set to the total discharge request value. A discharge command value for each of the plurality of AC / DC converters 3 is calculated by multiplying the result and dividing the result of the multiplication by the total value of the maximum discharge power values of the plurality of AC / DC converters 3. For this reason, it can respond | correspond to a comprehensive discharge request value when needed, keeping the residual amount of the some storage battery 2 uniform.

また、総合放電要求値が複数の交直変換装置3の最大放電電力値の合計値よりも大きい場合、複数の交直変換装置3の各々に対する放電指令値を演算する際に用いる総合放電要求値は、複数の交直変換装置3の最大放電電力値の合計値となる。このため、総合放電要求値に対応できない場合でも、複数の蓄電池2において可能な限りの放電を行うことができる。   Further, when the total discharge request value is larger than the total value of the maximum discharge power values of the plurality of AC / DC converters 3, the total discharge request value used when calculating the discharge command value for each of the plurality of AC / DC converters 3 is: This is the sum of the maximum discharge power values of the plurality of AC / DC converters 3. For this reason, even when it cannot respond to a comprehensive discharge request value, as much discharge as possible can be performed in the plurality of storage batteries 2.

次に、図5を用いて、残量管理装置7の例を説明する。
図5はこの発明の実施の形態1における蓄電池の残量管理装置のハードウェア構成図である。
Next, an example of the remaining amount management device 7 will be described with reference to FIG.
FIG. 5 is a hardware configuration diagram of the storage battery remaining amount management apparatus according to Embodiment 1 of the present invention.

残量管理装置7の各機能は、処理回路により実現し得る。例えば、処理回路は、少なくとも1つのプロセッサ12aと少なくとも1つのメモリ12bとを備える。例えば、処理回路は、少なくとも1つの専用のハードウェア13を備える。   Each function of the remaining amount management device 7 can be realized by a processing circuit. For example, the processing circuit includes at least one processor 12a and at least one memory 12b. For example, the processing circuit comprises at least one dedicated hardware 13.

処理回路が少なくとも1つのプロセッサ12aと少なくとも1つのメモリ12bとを備える場合、残量管理装置7の各機能は、ソフトウェア、ファームウェア、又はソフトウェアとファームウェアとの組み合わせにより実現される。ソフトウェアおよびファームウェアの少なくとも一方は、プログラムとして記述される。ソフトウェアおよびファームウェアの少なくとも一方は、少なくとも1つのメモリ12bに格納される。少なくとも1つのプロセッサ12aは、少なくとも1つのメモリ12bに記憶されたプログラムを読み出して実行することにより、残量管理装置7の各機能を実現する。少なくとも1つのプロセッサ12aは、CPU(Central Processing Unit)、中央処理装置、処理装置、算出装置、マイクロプロセッサ、マイクロコンピュータ、DSPともいう。例えば、少なくとも1つのメモリ12bは、RAM、ROM、フラッシュメモリ、EPROM、EEPROM等の、不揮発性又は揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、DVD等である。   When the processing circuit includes at least one processor 12a and at least one memory 12b, each function of the remaining amount management device 7 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program. At least one of software and firmware is stored in at least one memory 12b. At least one processor 12a implements each function of the remaining amount management device 7 by reading and executing a program stored in at least one memory 12b. The at least one processor 12a is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, a calculation unit, a microprocessor, a microcomputer, and a DSP. For example, the at least one memory 12b is a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, or EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, or the like.

処理回路が少なくとも1つの専用のハードウェア13を備える場合、処理回路は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ASIC、FPGA、又はこれらを組み合わせたものである。例えば、残量管理装置7の各機能は、それぞれ処理回路で実現される。例えば、残量管理装置7の各機能は、まとめて処理回路で実現される。   If the processing circuit comprises at least one dedicated hardware 13, the processing circuit is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. is there. For example, each function of the remaining amount management device 7 is realized by a processing circuit. For example, each function of the remaining amount management device 7 is realized by a processing circuit collectively.

残量管理装置7の各機能について、一部を専用のハードウェア13で実現し、他部をソフトウェア又はファームウェアで実現してもよい。例えば、充放電可能数演算部7aの機能については専用のハードウェア13としての処理回路で実現し、充放電可能数演算部7a以外の機能については少なくとも1つのプロセッサ12aが少なくとも1つのメモリ12bに格納されたプログラムを読み出して実行することにより実現してもよい。   A part of the functions of the remaining amount management device 7 may be realized by the dedicated hardware 13 and the other part may be realized by software or firmware. For example, the functions of the chargeable / dischargeable number calculating unit 7a are realized by a processing circuit as dedicated hardware 13, and at least one processor 12a is connected to at least one memory 12b for functions other than the chargeable / dischargeable number calculating unit 7a. You may implement | achieve by reading and executing the stored program.

このように、処理回路は、ハードウェア13、ソフトウェア、ファームウェア、又はこれらの組み合わせによって、残量管理装置7の各機能を実現する。   In this way, the processing circuit realizes each function of the remaining amount management device 7 by the hardware 13, software, firmware, or a combination thereof.

1 電力系統、 2 蓄電池、 3 交直変換装置、 4 変圧器、 5 バッテリコントロール、 6 充放電指示装置、 7 残量管理装置、 7a 充放電可能数演算部、 7b 最大充放電電力値演算部、 7c システム最大充放電電力値演算部、 7d 充放電指令値演算部、 8 ケース、 9 蓄電池モジュール、 10 電池セル、 11 ヒューズ、 12a プロセッサ、 12b メモリ、 13 ハードウェア   DESCRIPTION OF SYMBOLS 1 Power system, 2 Storage battery, 3 AC / DC converter, 4 Transformer, 5 Battery control, 6 Charging / discharging instruction | indication apparatus, 7 Remaining amount management apparatus, 7a Chargeable / dischargeable number calculating part, 7b Maximum charging / discharging electric power value calculating part, 7c System maximum charge / discharge power value calculation unit, 7d charge / discharge command value calculation unit, 8 case, 9 storage battery module, 10 battery cell, 11 fuse, 12a processor, 12b memory, 13 hardware

Claims (4)

複数の蓄電池の各々において複数の蓄電池モジュールが並列に接続されており、前記複数の蓄電池の各々からの直流電力を複数の交直変換装置の各々により交流電力に変換して当該交流電力を電力系統に供給する電力供給システムにおいて、前記複数の蓄電池の各々の残量から前記複数の蓄電池の残量の平均値を減算した値に基づいて前記複数の蓄電池の各々の残量補正用の充電可能列数を演算する充放電可能数演算部と、
前記複数の交直変換装置の各々の最大充電電力値を前記複数の交直変換装置の各々に対応する蓄電池の残量補正用の充電可能列数で除算することで、前記複数の交直変換装置の各々の1並列当たりの最大充電電力値を演算する最大充放電電力値演算部と、
前記複数の交直変換装置の各々の1並列当たりの最大充電電力値のうちの最小値に前記複数の蓄電池の各々の残量補正用の充電可能列数の合計を乗算することで、システム最大充電電力値を演算するシステム最大充放電電力値演算部と、
総合充電要求値が前記システム最大充電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値以上の場合は、前記システム最大充電電力値を総合充電要求値として、当該総合充電要求値に前記複数の蓄電池の各々の残量補正用の充電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の充電可能列数の合計値で除算することで、前記複数の交直変換装置の各々に対する充電指令値を演算し、
総合充電要求値が前記最大充電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合充電要求値に前記複数の交直変換装置の各々の最大充電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置の最大充電電力値の合計値で除算することで、前記複数の交直変換装置の各々に対する充電指令値を演算する充放電指令値演算部と、
を備えた蓄電池の残量管理装置。
In each of the plurality of storage batteries, a plurality of storage battery modules are connected in parallel, and DC power from each of the plurality of storage batteries is converted into AC power by each of the plurality of AC / DC converters, and the AC power is converted into a power system. In the power supply system to be supplied, the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries based on a value obtained by subtracting an average value of the remaining amount of the plurality of storage batteries from the remaining amount of each of the plurality of storage batteries Chargeable / dischargeable number calculating section for calculating
Each of the plurality of AC / DC converters is divided by dividing the maximum charging power value of each of the plurality of AC / DC converters by the number of chargeable columns for correcting the remaining amount of the storage battery corresponding to each of the plurality of AC / DC converters. A maximum charge / discharge power value calculation unit for calculating a maximum charge power value per parallel of
By multiplying the minimum value among the maximum charge power values per parallel of each of the plurality of AC / DC converters by the total number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries, the system maximum charge A system maximum charge / discharge power value calculation unit for calculating the power value;
When the total charge request value is not less than or equal to the system maximum charge power value and the variation in the remaining amount of the plurality of storage batteries is equal to or greater than a certain value, the system maximum charge power value is set as the total charge request value, and the total charge request value Is multiplied by the number of chargeable columns for correcting the remaining amount of each of the plurality of storage batteries, and the result of the multiplication is divided by the total number of chargeable columns for correcting the remaining amount of the plurality of storage batteries. Calculate a charge command value for each of the plurality of AC / DC converters,
When the total charge request value is not less than or equal to the maximum charge power value, and the variation in the remaining amount of the plurality of storage batteries is less than a certain value, the maximum charge power value of each of the plurality of AC / DC converters to the total charge request value Charge / discharge command value calculation unit for calculating a charge command value for each of the plurality of AC / DC converters by dividing the multiplication result by the total value of the maximum charging power values of the plurality of AC / DC converters When,
A storage battery remaining amount management device.
前記充放電指令値演算部は、総合充電要求値が前記複数の交直変換装置の最大充電電力値の合計値よりも大きい場合は、前記複数の交直変換装置の各々に対する充電指令値を演算する際に用いる総合充電要求値を前記複数の交直変換装置の最大充電電力値の合計値とする請求項1に記載の蓄電池の残量管理装置。   The charge / discharge command value calculation unit calculates a charge command value for each of the plurality of AC / DC converters when the total charge request value is larger than the total value of the maximum charge power values of the plurality of AC / DC converters. The remaining charge management device for a storage battery according to claim 1, wherein the total charge request value used for the battery is a total value of maximum charge power values of the plurality of AC / DC converters. 複数の蓄電池の各々において複数の蓄電池モジュールが並列に接続されており、前記複数の蓄電池の各々からの直流電力を複数の交直変換装置の各々により交流電力に変換して当該交流電力を電力系統に供給する電力供給システムにおいて、前記複数の蓄電池の各々の残量から前記複数の蓄電池の残量の平均値を減算した値に基づいて、前記複数の蓄電池の各々の残量補正用の放電可能列数を演算する充放電可能数演算部と、
前記複数の交直変換装置の各々の最大放電電力値を前記複数の交直変換装置の各々に対応する蓄電池の残量補正用の放電可能列数で除算することで、前記複数の交直変換装置の各々の1並列当たりの最大放電電力値を演算する最大充放電電力値演算部と、
前記複数の交直変換装置の各々の1並列当たりの最大放電電力値のうちの最小値に前記複数の蓄電池の各々の残量補正用の放電可能列数の合計を乗算することで、システム最大放電電力値を演算するシステム最大充放電電力値演算部と、
総合放電要求値が前記システム最大放電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値以上の場合は、前記システム最大放電電力値を総合放電要求値として、当該総合放電要求値に前記複数の蓄電池の各々の残量補正用の放電可能列数を乗算し、当該乗算の結果を前記複数の畜電池の残量補正用の放電可能列数の合計値で除算することで、前記複数の交直変換装置の各々に対する放電指令値を演算し、
総合放電要求値が前記最大放電電力値以下でなく、前記複数の蓄電池の残量のばらつきが一定値未満の場合は、当該総合放電要求値に前記複数の交直変換装置の各々の最大放電電力値を乗算し、当該乗算の結果を前記複数の交直変換装置の最大放電電力値の合計値で除算することで、前記複数の交直変換装置の各々に対する放電指令値を演算する充放電指令値演算部と、
を備えた蓄電池の残量管理装置。
In each of the plurality of storage batteries, a plurality of storage battery modules are connected in parallel, and DC power from each of the plurality of storage batteries is converted into AC power by each of the plurality of AC / DC converters, and the AC power is converted into a power system. In the power supply system to be supplied, based on a value obtained by subtracting an average value of the remaining amount of the plurality of storage batteries from the remaining amount of each of the plurality of storage batteries, a dischargeable column for correcting the remaining amount of each of the plurality of storage batteries. Chargeable / dischargeable number calculating section for calculating the number;
Each of the plurality of AC / DC converters is divided by dividing the maximum discharge power value of each of the plurality of AC / DC converters by the number of dischargeable columns for correcting the remaining amount of the storage battery corresponding to each of the plurality of AC / DC converters. A maximum charge / discharge power value calculation unit for calculating a maximum discharge power value per parallel of
The system maximum discharge is obtained by multiplying the minimum value of the maximum discharge power values per parallel of each of the plurality of AC / DC converters by the total number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries. A system maximum charge / discharge power value calculation unit for calculating the power value;
When the total discharge request value is not less than or equal to the system maximum discharge power value and the variation in the remaining amount of the plurality of storage batteries is greater than or equal to a certain value, the system maximum discharge power value is set as the total discharge request value, and the total discharge request value Is multiplied by the number of dischargeable columns for correcting the remaining amount of each of the plurality of storage batteries, and the result of the multiplication is divided by the total value of the number of dischargeable columns for correcting the remaining amount of the plurality of storage batteries. Calculating a discharge command value for each of the plurality of AC / DC converters;
When the total discharge request value is not less than or equal to the maximum discharge power value, and the variation in the remaining amount of the plurality of storage batteries is less than a certain value, the maximum discharge power value of each of the plurality of AC / DC converters to the total discharge request value The charge / discharge command value calculation unit calculates the discharge command value for each of the plurality of AC / DC converters by dividing the multiplication result by the total value of the maximum discharge power values of the plurality of AC / DC converters When,
A storage battery remaining amount management device.
前記充放電指令値演算部は、総合放電要求値が前記複数の交直変換装置の最大放電電力値の合計値よりも大きい場合は、前記複数の交直変換装置の各々に対する放電指令値を演算する際に用いる総合放電要求値を前記複数の交直変換装置の最大放電電力値の合計値とする請求項3に記載の蓄電池の残量管理装置。   When the total discharge request value is larger than the total value of the maximum discharge power values of the plurality of AC / DC converters, the charge / discharge command value calculating unit calculates a discharge command value for each of the plurality of AC / DC converters. The remaining charge management device for a storage battery according to claim 3, wherein the total discharge request value used for is a total value of maximum discharge power values of the plurality of AC / DC converters.
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