JP2003092830A - Charge and discharge system for secondary battery for power storage - Google Patents
Charge and discharge system for secondary battery for power storageInfo
- Publication number
- JP2003092830A JP2003092830A JP2001284380A JP2001284380A JP2003092830A JP 2003092830 A JP2003092830 A JP 2003092830A JP 2001284380 A JP2001284380 A JP 2001284380A JP 2001284380 A JP2001284380 A JP 2001284380A JP 2003092830 A JP2003092830 A JP 2003092830A
- Authority
- JP
- Japan
- Prior art keywords
- power
- secondary battery
- protection relay
- facility
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010248 power generation Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 12
- 238000012790 confirmation Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 abstract 7
- 230000005611 electricity Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- QRABSTLMZWUWIQ-UHFFFAOYSA-N CSCP Chemical compound CSCP QRABSTLMZWUWIQ-UHFFFAOYSA-N 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、商用電力系統が停
電し、受電設備から電力貯蔵用二次電池が自動解列され
（切り離され）た場合に、商用電力系統が復電した後
に、一定条件下で二次電池を自動的に並列（接続）し、
充電・放電運転を自動的に再開するシステムに関する。
【０００２】
【従来の技術】政府が発行した「系統連系技術要件ガイ
ドライン」には、「連系された系統に事故が発生した場
合には、当該系統から発電設備が解列され単独運転が生
じないこと」が定められている。従って、発電設備に用
いた二次電池は上述したように、商用電力系統が停電し
たときには、商用電力系統から自動的に解列される。そ
して、従来、系統へ再び並列する作業は、運転保守員が
二次電池等の異常がないことを確認した後、手動で行っ
ていた。
【０００３】ところが、現地に運転保守員が常駐してい
ない場合は、停電後に商用電力系統が復電しても、運転
保守員が現地に到着するまでの間、二次電池は商用電力
系統から解列された状態となっている。従って、停電発
生時が二次電池の充電時間帯の場合には、充電量が不足
して、放電時間帯の途中で放電不能となることがある。
一方、二次電池の放電時間帯の場合には、本来であれば
二次電池から放電される電力を、商用電力系統から受電
することになる。そうすると、二次電池で補う予定であ
った電力量分の電気料金が、別途嵩むだけでなく、場合
によっては、電力会社との契約電力を超過することもあ
る。このため、復電後は、短時間のうちに二次電池を自
動的に並列することが望まれている。
【０００４】ここで、電気料金の体系を簡単に説明する
と、国内の電気事業者から電気を新規に購入する場合、
通常は最大使用電力（ＫＷ）を契約電力として予め定め
て契約し、契約電力を超過しない限りは、契約電力に対
応した基本料金と、使用電力量の料金を毎月支払うこと
になっている。ところが、使用電力の３０分の平均値が
契約電力を超過したことが電力量計に記録された場合に
は、違約金を払うか、超過した電力を最大使用電力とし
た割高な基本料金をその月から１年間、支払うことにな
っている。
【０００５】また、使用電力は通常、夜間は少なく、昼
間は多くなるので、電力量料金を夜間は割安に、昼間は
割高に設定した契約種別が存在する。従って、高圧受電
設備に電力貯蔵用二次電池を接続した場合には、電力料
金が割安な時間帯（一般的には深夜）に二次電池に充電
し、使用電力が多く電力料金が割高な時間帯に放電し
て、割高な時間帯の買電量を減らすと共に使用電力のピ
ークを下げることによって契約電力を小さくし、支払い
料金を下げるようにしている。
【０００６】
【発明が解決しようとする課題】本発明は上記実情を考
慮して開発されたもので、その目的は、運転保守員が不
在の場合でも商用電力系統の復電後に、二次電池を自動
的に並列することのできる電力貯蔵用二次電池の充放電
システムを提供することである。
【０００７】
【課題を解決するための手段】本発明は、商用電力系統
に受電設備を介して発電設備を接続し、受電設備内に
は、系統連系保護リレーと受電設備保護リレーで開く遮
断器を備え、発電設備内には、系統連系保護リレーと発
電設備保護リレーで開く遮断器と、商用電力系統からの
充放電を行う二次電池と、その充放電を制御する監視制
御装置を備え、監視制御装置は、商用電力系統の停電・
復電を系統連系保護リレーからの信号に基づいて把握す
ると共に二次電池が充放電可能・不能な状態であること
を受電設備保護リレーと発電設備保護リレーからの信号
に基づいて把握し、商用電力系統が停電した場合には、
系統連系保護リレーが動作して監視制御装置が両遮断器
を開いて二次電池を自動的に切り離す電力貯蔵用二次電
池の充放電システムにおいて、停電によって二次電池が
切り離された後に商用電力系統が復電した場合に、監視
制御装置は、商用電力系統の復電並びに二次電池が充放
電可能な状態であることを系統連系保護リレーと受電設
備保護リレーと発電設備保護リレーからの信号に基づい
て把握したときに、二次電池を再度接続するか否かを判
断する確認時間の計測を開始し、商用電力系統の復電状
態並びに二次電池が充放電可能な状態が確認時間中維持
されているときには、監視制御装置は切り離した遮断器
を確認時間の経過後に閉じて二次電池を自動的に接続す
ることを特徴とする。
【０００８】
【発明の実施の形態】本発明の電力貯蔵用二次電池の充
放電システムは図１及び図２に示すように、商用電力系
統（配電線）１から受電設備２を介して負荷設備３及び
発電設備４を接続してある。
【０００９】受電設備２内には、高圧受電盤５と分電盤
６を備え、高圧受電盤５に入る前に区分開閉器７を有
し、高圧受電盤５内では、幹線に高圧側遮断器８を接続
すると共に高圧側遮断器８の手前で分岐して系統連系保
護リレー９を接続し、高圧側遮断器８を開く過電流保護
リレー１０を高圧側遮断器８の近傍に接続してある。
【００１０】分電盤６内では、幹線が分岐して負荷設備
３、発電設備４に接続してある。また、分岐線の一つ
は、負荷設備３に向かう途中に高圧側遮断器１１を有
し、その遮断器１１の近傍に負荷設備用の受電設備保護
リレー１２を接続してある。同様に、分岐線の他の一つ
は、発電設備４に向かう途中に高圧側遮断器１３を有
し、その遮断器１３の近傍に発電設備用の受電設備保護
リレー１４を接続してある。
【００１１】系統連系保護リレー９は、単独運転検出
器、過電圧継電器、不足電圧継電器、過周波数継電器、
不足周波数継電器、地絡過電圧継電器などを備え、後述
する監視制御装置２４に商用電力系統１の停電・復電を
知らせるものである。
【００１２】受電設備保護リレー１４は、地絡方向継電
器、過電流継電器などを備え、異常が発生した場合に近
傍の受電設備用の遮断器１３に開信号を出力する。
【００１３】発電設備４は、高圧入力盤内では発電設備
用の高圧側遮断器１５を分岐線に接続し、その遮断器１
５の近傍に発電設備保護リレー１６を接続し、その後、
分岐線に変圧器１７を接続し、交直変換装置盤内に導い
てある。発電設備保護リレー１６は近傍の遮断器１５に
開信号を出力する。交直変換装置盤内では、インバータ
１９の前後に低圧側遮断器１８，２０を備え、最終的に
二次電池２２に導いてある。二次電池２２は並列接続し
てあるので、各電池には低圧側遮断器２０の二次側に遮
断器２１を備えている。また、インバータ１９、低圧側
遮断器１８，２０、遮断器２１にＰＣＳＣＰ（パワーコ
ントロールシステムコンピュータ）２３を接続し、交流
過電流、直流過電流、直流過電圧、直流不足電圧、制御
電源異常、ファン異常、スタック温度異常、ヒューズ
断、スタックアーム短絡、ブレーカートリップなどを検
出してインバータ１９が正常に動作しているか否か二次
電池２２が正常か否かを判断し、監視制御装置２４にそ
の情報を出力し、監視制御装置２４からの信号で低圧側
遮断器１８，２０を自動的に開閉するものである。
【００１４】監視制御装置２４は、系統連系保護リレー
９、受電設備保護リレー１４、発電設備保護リレー１
６、ＰＣＳＣＰ２３、二次電池２２に接続してあり、Ｐ
ＣＳＣＰ２３を介してインバータ１９に夜間は充電指令
を、昼間は放電指令を出力するだけでなく、各種信号を
取り込んで、二次電池を切り離す遮断器１３，１５，１
８，２０へ開閉信号を出力する。また、監視制御装置２
４は、電池故障表示、ＰＣＳ故障表示、系統連系保護リ
レー９の動作表示、受電設備保護リレー１４の動作表
示、発電設備保護リレー１６の動作表示、単独運転検出
表示用のランプやブザー等を備えている。二次電池２２
が故障しているか正常かは、電池電圧異常高、電池電圧
異常低、電池電流異常大、直流地絡、電池温度異常低、
電池温度異常高、電池制御装置異常などの検出によって
把握する。
【００１５】さらに、監視制御装置２４内には、図示し
ないが、系統連系保護リレー９と受電設備保護リレー１
４と発電設備用保護リレー１６からの信号を取り込む論
理回路と、その論理回路からの出力信号を受けるタイマ
ーを備え、停電後に二次電池２２を再度接続する判断を
する。
【００１６】論理回路は、タイマーに計測開始を促す信
号を出力するもので、タイマーが計測を開始する条件
は、停電後に復電した場合に、系統連系保護リレー９か
ら復電信号が出力されると共に受電設備保護リレー１４
と発電設備保護リレー１６から二次電池２２へ充放電可
能な状態を表す信号（不動作信号）が出力されたときで
ある。なお、受電設備保護リレー１４や発電設備保護リ
レー１６から動作信号が出力された場合は、二次電池２
２の再度の接続を見合わせる。
【００１７】タイマーは、計測開始を促す信号の出力が
継続している場合は計測を継続し、その出力が継続して
いる時間が、二次電池２２を再度接続するか否かを判断
する確認時間、例えば５分を満了したときに、その満了
を知らせる信号を監視制御装置本体に出力し、その満了
信号を受けた場合に、二次電池２２を切り離した遮断器
１３，１５，１８，２０に閉信号を出力して、それら遮
断器を閉じて二次電池２２を自動的に接続する。また、
確認時間が満了する前に、論理回路に停電信号や受電設
備保護リレー１４、発電設備保護リレー１６の各動作信
号が出力された場合には、計測を中止し、二次電池２２
が切り離された状態を維持する。
【００１８】上述した電力貯蔵用二次電池の充放電シス
テムは、商用電力系統１で事故などが発生して停電した
場合、系統連系保護リレー９が動作し、その動作信号
（停電信号）を受けた監視制御装置２４が、二次電池２
２へ通じる分岐線に接続した遮断器１３，１５，１８，
２０に開信号を出力して、それら遮断器を自動的に開
き、停電が起こったことをランプやブザー等で表す。こ
こで低圧側遮断器１８，２０を開くのは、インバータ１
９を回路から切り離し、二次電池２２が充放電するのを
防ぐ為である。
【００１９】また、事故が解消して商用電力系統１が復
電すると、商用電力系統１の電圧・周波数が正常に戻っ
てそれを把握した系統連系保護リレー９は、監視制御装
置２４に復電信号を出力する。監視制御装置２４は、こ
の時に復電信号（不動作信号）以外に、受電設備保護リ
レー１４からの不動作信号、発電設備保護リレー１６か
らの不動作信号を受けると、発電設備４内で地絡、短絡
が発生しておらず、しかも、インバータ１９や二次電池
２２が正常であると把握して、二次電池２２が充放電可
能な状態であると判断する。なお、停電が起こるまで
は、二次電池２２を商用電力系統１から切り離す遮断器
１３，１５，１８，２０は何れも閉じており、しかも二
次電池２２及びインバータ１９が正常であったので、受
電設備保護リレー１４からの不動作信号のみを監視制御
装置２４は受ければ、二次電池２２が充放電可能な状態
であると判断できるが、万全を期すため発電設備保護リ
レー１６からの不動作信号をも判断の要素としてある。
従って、復電信号と受電設備保護リレー１４からの不動
作信号と発電設備保護リレー１６からの不動作信号を受
けた場合に、監視制御装置２４は確認時間の計測を開始
し、確認時間を満了してもそれらの信号が出力された状
態が維持しているときには、確認時間の経過後に二次電
池を切り離した遮断器１３，１５，１８，２０に閉信号
を出力して、それら遮断器を閉じて二次電池２２を再度
接続し、充放電を再開する。
【００２０】
【発明の効果】本発明によれば、復電後に監視制御装置
が自動的に二次電池を商用電力系統に接続するので、運
転保守員が不在の場合であっても、迅速に二次電池の充
放電を再開できる。従って、従来よりも充電量及び放電
量が増え、電気料金を安く抑えることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically disconnecting (separating) a power storage secondary battery from a power receiving facility when a commercial power system is cut off. After the commercial power system is restored, the secondary batteries are automatically paralleled (connected) under certain conditions,
The present invention relates to a system for automatically restarting a charge / discharge operation. [0002] The "Guidelines for System Interconnection Technical Requirements" issued by the government include: "If an accident occurs in an interconnected system, power generation facilities are disconnected from the system and independent operation is performed. It does not happen ". Therefore, as described above, the secondary battery used for the power generation facility is automatically disconnected from the commercial power system when the commercial power system is cut off. Conventionally, the operation of re-paralleling to the system has been manually performed after the operation and maintenance staff has confirmed that there is no abnormality in the secondary battery or the like. [0003] However, when the operation and maintenance staff is not resident at the site, even if the commercial power system is restored after the power failure, the secondary battery remains connected to the commercial power system until the operation and maintenance staff arrives at the site. It has been disconnected. Therefore, when the power failure occurs during the charging time period of the secondary battery, the amount of charge may be insufficient and discharging may not be possible during the discharging time period.
On the other hand, in the case of the discharge time period of the secondary battery, the power that would otherwise be discharged from the secondary battery is received from the commercial power system. Then, the electricity rate for the amount of power that was to be supplemented by the secondary battery not only increases separately, but also in some cases exceeds the contracted power with the power company. For this reason, it is desired to automatically parallel the secondary batteries within a short time after the power is restored. [0004] Here, a brief description of the electricity bill system is as follows. When a new electricity is purchased from a domestic electricity company,
Normally, a contract is made with the maximum power consumption (KW) determined in advance as the contract power, and unless the contract power is exceeded, a basic fee corresponding to the contract power and a fee for the power consumption are paid every month. However, if it is recorded in the watt hour meter that the average value of the used electric power for 30 minutes exceeds the contracted electric power, a penalty is paid or an expensive basic charge with the excess electric power as the maximum electric power used is recorded. You have to pay for one year from the month. [0005] In addition, since the power consumption is usually low during the nighttime and high during the daytime, there are contract types in which the electricity charge is set to be cheaper at night and set higher at nighttime. Therefore, when a secondary battery for power storage is connected to the high-voltage power receiving equipment, the secondary battery is charged during a time period when the power rate is relatively low (generally late at night), and the power consumption is high and the power rate is high. By discharging during the time period, the contracted power is reduced by reducing the amount of power purchase in the expensive time period and the peak of the power consumption, thereby reducing the payment fee. SUMMARY OF THE INVENTION The present invention has been developed in view of the above-mentioned circumstances, and has as its object to provide a secondary battery after power is restored from a commercial power system even when an operation and maintenance person is absent. It is an object of the present invention to provide a charging / discharging system for a power storage secondary battery, which can automatically parallelize the power consumption. According to the present invention, a power generating facility is connected to a commercial power system via a power receiving facility, and the power receiving facility is shut off by a system interconnection protection relay and a power receiving facility protection relay. In the power generation equipment, there are a circuit breaker that opens with the grid connection protection relay and the power generation equipment protection relay, a secondary battery that charges and discharges from the commercial power system, and a monitoring and control device that controls the charge and discharge. Monitoring and control equipment
Recovering the power recovery based on the signal from the grid connection protection relay, and recognizing that the secondary battery is chargeable / disableable / impossible based on the signals from the power receiving equipment protection relay and the power generation equipment protection relay, If the commercial power system fails,
The grid connection protection relay operates and the monitoring and control device opens both circuit breakers to automatically disconnect the secondary battery.In a power storage secondary battery charge / discharge system, after the secondary battery is disconnected due to a power failure, When the power system is restored, the monitoring and control device determines from the system interconnection protection relay, the power receiving equipment protection relay, and the power generation equipment protection relay that the commercial power system has been restored and that the secondary battery is ready for charging and discharging. When it is grasped based on the signal of, the measurement of the confirmation time to judge whether or not to connect the secondary battery again is started, and the power recovery state of the commercial power system and the state where the secondary battery can be charged and discharged are checked When maintained for a period of time, the monitoring control device is characterized in that the disconnected circuit breaker is closed after a lapse of the confirmation time and the secondary battery is automatically connected. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a charge / discharge system for a secondary battery for power storage according to the present invention includes a load from a commercial power system (distribution line) 1 through a power receiving facility 2. The facility 3 and the power generation facility 4 are connected. A high-voltage power receiving panel 5 and a distribution panel 6 are provided in the power receiving equipment 2, and a sectional switch 7 is provided before the high-voltage power receiving panel 5 is entered. In addition to connecting the circuit breaker 8 and branching before the high voltage side circuit breaker 8, connecting the system interconnection protection relay 9, and connecting the overcurrent protection relay 10 for opening the high voltage side circuit breaker 8 near the high voltage side circuit breaker 8. It is. In the distribution board 6, a trunk line branches off and is connected to the load equipment 3 and the power generation equipment 4. One of the branch lines has a high-voltage circuit breaker 11 on the way to the load equipment 3, and a power receiving equipment protection relay 12 for the load equipment is connected near the circuit breaker 11. Similarly, the other branch line has a high-voltage side circuit breaker 13 on the way to the power generation facility 4, and a power receiving facility protection relay 14 for the power generation facility is connected near the circuit breaker 13. The system interconnection protection relay 9 includes an isolated operation detector, an overvoltage relay, an undervoltage relay, an overfrequency relay,
It is provided with an under-frequency relay, a ground fault over-voltage relay, and the like, and notifies a monitoring and control device 24 to be described later of a power failure / recovery of the commercial power system 1. The power receiving equipment protection relay 14 includes a ground fault direction relay, an overcurrent relay, and the like, and outputs an open signal to a nearby power receiving equipment breaker 13 when an abnormality occurs. In the power generation equipment 4, a high-voltage side circuit breaker 15 for the power generation equipment is connected to a branch line in the high-voltage input panel.
5 is connected to the power generation equipment protection relay 16 and then
A transformer 17 is connected to the branch line and led into the AC / DC converter panel. The power generation equipment protection relay 16 outputs an open signal to the circuit breaker 15 in the vicinity. In the AC / DC converter panel, low voltage side circuit breakers 18 and 20 are provided before and after the inverter 19, and are finally led to the secondary battery 22. Since the secondary batteries 22 are connected in parallel, each battery has a circuit breaker 21 on the secondary side of the low-voltage circuit breaker 20. In addition, a PCSCP (power control system computer) 23 is connected to the inverter 19, the low-voltage side circuit breakers 18, 20, and the circuit breaker 21, and AC overcurrent, DC overcurrent, DC overvoltage, DC undervoltage, control power supply abnormality, fan abnormality. , An abnormal stack temperature, a blown fuse, a shorted stack arm, a breaker trip, etc., to determine whether the inverter 19 is operating normally or not, and whether the secondary battery 22 is normal. And automatically opens and closes the low-voltage circuit breakers 18 and 20 in response to a signal from the monitoring control device 24. The monitoring and control device 24 includes a system interconnection protection relay 9, a power receiving equipment protection relay 14, and a power generation equipment protection relay 1.
6, connected to PCSCP23, secondary battery 22,
Circuit breakers 13, 15, and 1 not only output a charge command at night and a discharge command at daytime to inverter 19 via CSCP 23 but also take in various signals and disconnect the secondary battery.
An open / close signal is output to 8, 20. Also, the monitoring control device 2
Reference numeral 4 denotes a battery failure display, a PCS failure display, an operation display of the grid interconnection protection relay 9, an operation display of the power receiving equipment protection relay 14, an operation display of the power generation equipment protection relay 16, a lamp and a buzzer, etc., for displaying an individual operation detection. Have. Rechargeable battery 22
Is normal or abnormal, battery voltage abnormally high, battery voltage abnormally low, battery current abnormally large, DC ground fault, battery temperature abnormally low,
Understand by detecting abnormally high battery temperature, abnormal battery control device, etc. Further, although not shown, the system interconnection protection relay 9 and the power receiving equipment protection relay 1
4 and a logic circuit for receiving a signal from the power generation facility protection relay 16 and a timer for receiving an output signal from the logic circuit, and determine whether to connect the secondary battery 22 again after a power failure. The logic circuit outputs a signal prompting the timer to start the measurement. The condition for the timer to start the measurement is that when the power is restored after a power failure, a power restoration signal is output from the grid interconnection protection relay 9. And power receiving equipment protection relay 14
And a signal (non-operation signal) indicating that the secondary battery 22 can be charged and discharged from the power generation facility protection relay 16. When an operation signal is output from the power receiving equipment protection relay 14 or the power generation equipment protection relay 16, the secondary battery 2
Forget the second connection. The timer continues the measurement when the output of the signal prompting the start of the measurement is continued, and determines whether the time during which the output is continued is to determine whether or not the secondary battery 22 is connected again. When the time has expired, for example, 5 minutes, a signal notifying the expiration is output to the monitor and control device main body, and when the expiration signal is received, the circuit breakers 13, 15, 18, 20 disconnecting the secondary battery 22 are output. To output a close signal to close the circuit breakers and automatically connect the secondary battery 22. Also,
If the power failure signal and the operation signals of the power receiving equipment protection relay 14 and the power generation equipment protection relay 16 are output to the logic circuit before the confirmation time has expired, the measurement is stopped and the secondary battery 22 is stopped.
Maintain the disconnected state. In the charging / discharging system for a secondary battery for power storage described above, when an accident or the like occurs in the commercial power system 1 and a power outage occurs, the grid connection protection relay 9 operates, and the operation signal (power failure signal) is transmitted. The monitoring control device 24 receives the rechargeable battery 2
Circuit breakers 13, 15, 18, connected to the branch line leading to 2.
An open signal is output to 20, and the breakers are automatically opened to indicate that a power failure has occurred by a lamp, a buzzer, or the like. Here, the low-voltage side circuit breakers 18 and 20 are opened by the inverter 1
9 in order to prevent the secondary battery 22 from being charged and discharged. When the commercial power system 1 recovers power after the accident is resolved, the voltage and frequency of the commercial power system 1 return to normal, and the system interconnection protection relay 9 that has grasped the voltage and frequency returns to the monitoring and control device 24. Outputs an electric signal. At this time, when the monitoring control device 24 receives an inoperative signal from the power receiving equipment protection relay 14 and an inactive signal from the power generation equipment protection relay 16 in addition to the power recovery signal (inactive signal), the monitoring control device 24 It is determined that no short circuit or short circuit has occurred and the inverter 19 and the secondary battery 22 are normal, and it is determined that the secondary battery 22 is in a chargeable / dischargeable state. Until a power failure occurs, the circuit breakers 13, 15, 18, and 20 for disconnecting the secondary battery 22 from the commercial power system 1 are all closed, and the secondary battery 22 and the inverter 19 are normal. If the monitoring control device 24 receives only the non-operation signal from the power receiving equipment protection relay 14, the secondary battery 22 can be determined to be in a chargeable / dischargeable state. The signal is also an element of the judgment.
Therefore, when receiving the power recovery signal, the inactive signal from the power receiving equipment protection relay 14, and the inactive signal from the power generation equipment protection relay 16, the monitoring control device 24 starts measuring the confirmation time, and the confirmation time expires. However, when the state in which these signals are output is maintained, a close signal is output to circuit breakers 13, 15, 18, and 20 from which the secondary battery has been disconnected after the confirmation time has elapsed, and these circuit breakers are operated. Close and reconnect the secondary battery 22 to restart charging and discharging. According to the present invention, since the monitoring and control device automatically connects the secondary battery to the commercial power system after the power is restored, even if the operation and maintenance personnel are absent, the monitoring and control device can be quickly performed. Charging and discharging of the secondary battery can be resumed. Therefore, the amount of charge and the amount of discharge are increased as compared with the conventional case, and the electricity rate can be reduced.
【図面の簡単な説明】
【図１】本発明の電力貯蔵用二次電池の充放電システム
を示す簡易ブロック図である。
【図２】本発明の電力貯蔵用二次電池の充放電システム
を示す単線結線図である。
【符号の説明】
１ 商用電力系統
２ 受電設備
４ 発電設備
９ 系統連系保護リレー
１３，１５，１８，２０ 遮断器
１４ 受電設備保護リレー
１６ 発電設備保護リレー
２２ 二次電池
２４ 監視制御装置BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified block diagram showing a charge / discharge system for a power storage secondary battery according to the present invention. FIG. 2 is a single-line diagram showing a charge / discharge system for a power storage secondary battery according to the present invention. [Description of Signs] 1 Commercial power system 2 Power reception equipment 4 Power generation equipment 9 Grid connection protection relays 13, 15, 18, 20 Circuit breaker 14 Power reception equipment protection relay 16 Power generation equipment protection relay 22 Secondary battery 24 Monitoring and control device
Claims (1)
介して発電設備（４）を接続し、受電設備（２）内に
は、系統連系保護リレー（９）と受電設備保護リレー
（１４）で開く遮断器（１３）を備え、発電設備（４）
内には、系統連系保護リレー（９）と発電設備保護リレ
ー（１６）で開く遮断器（１５）と、商用電力系統
（１）からの充放電を行う二次電池（２２）と、その充
放電を制御する監視制御装置（２４）を備え、監視制御
装置（２４）は、商用電力系統（１）の停電・復電を系
統連系保護リレー（９）からの信号に基づいて把握する
と共に二次電池（２２）が充放電可能・不能な状態であ
ることを受電設備保護リレー（１４）と発電設備保護リ
レー（１６）からの信号に基づいて把握し、商用電力系
統が停電した場合には、系統連系保護リレー（９）が動
作して監視制御装置（２４）が両遮断器（１３，１５）
を開いて二次電池（２２）を自動的に切り離す電力貯蔵
用二次電池の充放電システムにおいて、 停電によって二次電池（２２）が切り離された後に商用
電力系統（１）が復電した場合に、監視制御装置（２
４）は、商用電力系統（１）の復電並びに二次電池（２
２）が充放電可能な状態であることを系統連系保護リレ
ー（９）と受電設備保護リレー（１４）と発電設備保護
リレー（１６）からの信号に基づいて把握したときに、
二次電池（２２）を再度接続するか否かを判断する確認
時間の計測を開始し、商用電力系統（１）の復電状態並
びに二次電池（２２）が充放電可能な状態が確認時間中
維持されているときには、監視制御装置（２４）は切り
離した遮断器（１３，１５）を確認時間の経過後に閉じ
て二次電池（２２）を自動的に接続することを特徴とす
る電力貯蔵用二次電池の充放電システム。Claims: 1. A power generation facility (4) is connected to a commercial power system (1) via a power reception facility (2), and a power grid connection protection relay (2) is provided in the power reception facility (2). 9) and a circuit breaker (13) that opens with a power receiving equipment protection relay (14), and a power generating equipment (4)
Inside, a circuit breaker (15) opened by a system interconnection protection relay (9) and a power generation equipment protection relay (16), a secondary battery (22) for charging and discharging from a commercial power system (1), and A monitoring control device (24) for controlling charging / discharging is provided, and the monitoring control device (24) grasps a power failure / recovery of the commercial power system (1) based on a signal from the grid connection protection relay (9). And that the secondary battery (22) is chargeable / dischargeable / impossible based on signals from the power receiving equipment protection relay (14) and the power generation equipment protection relay (16), and when the commercial power system fails. In the meantime, the system interconnection protection relay (9) is operated and the monitoring and control device (24) is operated by the two circuit breakers (13, 15)
In the charging / discharging system for a power storage secondary battery that automatically disconnects the secondary battery (22) when the commercial power system (1) is restored after the secondary battery (22) is disconnected due to a power failure The supervisory control device (2
4) The power recovery of the commercial power system (1) and the secondary battery (2)
When it is determined that 2) is in a chargeable / dischargeable state based on signals from the grid connection protection relay (9), the power receiving equipment protection relay (14), and the power generation equipment protection relay (16),
The measurement of the confirmation time for determining whether or not the secondary battery (22) is to be reconnected is started, and the power recovery state of the commercial power system (1) and the state in which the secondary battery (22) can be charged and discharged are checked. When the power is maintained, the monitoring and control device (24) closes the disconnected circuit breaker (13, 15) after a lapse of the confirmation time and automatically connects the secondary battery (22). Rechargeable battery charging and discharging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001284380A JP4524057B2 (en) | 2001-09-19 | 2001-09-19 | Charge / discharge system for secondary battery for power storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001284380A JP4524057B2 (en) | 2001-09-19 | 2001-09-19 | Charge / discharge system for secondary battery for power storage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003092830A true JP2003092830A (en) | 2003-03-28 |
| JP4524057B2 JP4524057B2 (en) | 2010-08-11 |
Family
ID=19107711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001284380A Expired - Fee Related JP4524057B2 (en) | 2001-09-19 | 2001-09-19 | Charge / discharge system for secondary battery for power storage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4524057B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013541309A (en) * | 2010-08-23 | 2013-11-07 | 三洋電機株式会社 | Power management system |
| JP2015154642A (en) * | 2014-02-17 | 2015-08-24 | 株式会社ダイヘン | Photovoltaic power generation facility for grid connection |
| US9762036B2 (en) | 2014-02-25 | 2017-09-12 | Wave Energy Inc. | Electric power distribution system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023673A (en) * | 1996-07-03 | 1998-01-23 | Omron Corp | Power conditioners and distributed power systems |
| JP2000116010A (en) * | 1998-09-30 | 2000-04-21 | Nissin Electric Co Ltd | Distributed power supply system |
-
2001
- 2001-09-19 JP JP2001284380A patent/JP4524057B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023673A (en) * | 1996-07-03 | 1998-01-23 | Omron Corp | Power conditioners and distributed power systems |
| JP2000116010A (en) * | 1998-09-30 | 2000-04-21 | Nissin Electric Co Ltd | Distributed power supply system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013541309A (en) * | 2010-08-23 | 2013-11-07 | 三洋電機株式会社 | Power management system |
| JP2015154642A (en) * | 2014-02-17 | 2015-08-24 | 株式会社ダイヘン | Photovoltaic power generation facility for grid connection |
| US9762036B2 (en) | 2014-02-25 | 2017-09-12 | Wave Energy Inc. | Electric power distribution system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4524057B2 (en) | 2010-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106655478B (en) | Low-voltage emergency safety power supply system of household garbage power plant and control method thereof | |
| CN101227091A (en) | Smart electricity system | |
| CN108565974A (en) | One kind being based on the self-powered long-range failure protection method and system of protective device | |
| CN109862669B (en) | Panel operation display and emergency method of emergency lighting centralized power supply system | |
| CN110224482A (en) | Electric ship main power source battery is grouped independently-powered and charging system | |
| CN214176917U (en) | Family energy storage cabinet with universality | |
| CN215813253U (en) | A remote control system for battery capacity verification of communication power supply | |
| KR20190030127A (en) | An apparatus and method for circuit breaker restoring by power failure detection remotely for battery charging system of electric vehicle | |
| KR101435328B1 (en) | Real time blackout protection system using artificial load control | |
| JP2020061850A (en) | Power generation control system, power generation control method, and program | |
| CN109861382B (en) | Power supply system capable of preventing surge voltage from impacting | |
| JP2008148505A (en) | Power compensator to prevent overload | |
| CN208890467U (en) | A kind of thermal power plant security personnel three power supply of section switching wiring construction | |
| CN110460025A (en) | Fast ring removal method and device thereof | |
| JP4524057B2 (en) | Charge / discharge system for secondary battery for power storage | |
| JP5576904B2 (en) | Uninterruptible power supply using lithium polymer battery | |
| CN208707386U (en) | A remote failure protection system based on self-powered protection device | |
| CN210016274U (en) | Improvement device for high voltage power-off tripping system of DC control circuit breaker | |
| JP2002315231A (en) | Uninterruptible power source equipment | |
| KR20190050318A (en) | Method for controlling power supply and microgrid system | |
| CN116388391A (en) | A control system for backup power supply of data center | |
| CN210444524U (en) | Panel operation display of emergency lighting centralized power supply system | |
| CN210380253U (en) | Multifunctional online transformer substation direct-current bus voltage loss prevention system | |
| CN115986904A (en) | A protection measurement and control system for standby automatic switching | |
| RU104390U1 (en) | DC SHIELD (OPTIONS) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080829 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100318 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100427 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100531 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 4524057 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130604 Year of fee payment: 3 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |