JPH04183234A - System switcher for uninterruptible power supply system - Google Patents
System switcher for uninterruptible power supply systemInfo
- Publication number
- JPH04183234A JPH04183234A JP2306821A JP30682190A JPH04183234A JP H04183234 A JPH04183234 A JP H04183234A JP 2306821 A JP2306821 A JP 2306821A JP 30682190 A JP30682190 A JP 30682190A JP H04183234 A JPH04183234 A JP H04183234A
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- Prior art keywords
- power supply
- switching
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- load
- power
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- 238000000034 method Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 abstract 3
- 238000007689 inspection Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
Ａ、産業上の利用分野
本発明は、無停電電源システムに係り、特に複数の無停
電電源系統と負荷の切替えを行う系統切替装置に関する
。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an uninterruptible power supply system, and particularly to a system switching device that switches loads between a plurality of uninterruptible power supply systems.
Ｂ０発明の概要
本発明は、電源系統及び電源を多重化し、複数の負荷に
系統切替えで給電する無停電電源システ１１において、
シーケンス制御により系統自動切替えを行い、このシー
ケンス制御を電源や負荷状況の情報を条件にして実行す
ることにより、
電源系統と負荷の切替えを確実、容易にするものである
。B0 Summary of the Invention The present invention performs automatic system switching using sequence control in an uninterruptible power supply system 11 that multiplexes power supply systems and power sources and supplies power to multiple loads by switching the system, and this sequence control is performed based on the power supply and load status. By executing based on information, it is possible to ensure and easily switch between power supply systems and loads.
Ｃ８従来の技術
］ンピュータの如く常時継続して運転状態にある負荷に
、定電圧・定周波数の安定した電力を供給する電源装置
として、インバータによるＣｖＣＦ（定電圧・定周波数
）を使用した無停電電源装置（Ｕ Ｉ） Ｓ ＞が広く
採用されている。 ・この無停電電源装置による電源シ
ステムは、停電が許されない負荷には電源系統が多重化
される。C8 Conventional Technology] An uninterruptible power supply system that uses CvCF (constant voltage, constant frequency) using an inverter as a power supply device that supplies stable power at constant voltage and constant frequency to loads that are constantly in operation, such as computers. Power supplies (UI) S> have been widely adopted. - In the power supply system using this uninterruptible power supply, the power supply system is multiplexed for loads that cannot tolerate power outages.
例えば、連続運転されるプラントや銀行のコンピュータ
は３６５日２４時間の稼動が要求され、システム構成は
第２図に示すように電源１．２の二重化さらに負荷３．
４の二重化が施され、電源ｌ。For example, computers in plants and banks that operate continuously are required to operate 24 hours a day, 365 days a year, and the system configuration is as shown in Figure 2, with dual power sources 1.2 and 3.2 loads.
4 redundant power supply.
２の一方の故障や保守点検又は負荷の一方のダウンに切
換装置５．６による選択切替えがなされる。Selective switching is performed by the switching device 5.6 in the event of a failure or maintenance/inspection of one of the two or a down of one of the loads.
同図のシステム構成において、電源１．２は切替え時に
同期がとられ、切換装置５，６は切替え時にも瞬断が起
きないようかつ電源の並列接続状態での検流が大きくな
らないよう瞬時ラップ切換装置とされる。In the system configuration shown in the figure, the power supplies 1 and 2 are synchronized when switching, and the switching devices 5 and 6 are instantaneously wrapped to prevent instantaneous interruptions and to prevent large galvanic current when the power supplies are connected in parallel. It is considered a switching device.
Ｄ１発明が解決しようと４′る課題
従来の無停電電源システムにおいて、切換装置５．６は
保守点検時には手動操作で行われ、停電や異常時には不
足電圧リレー等によって自動切替えがなされるが、電源
系統の多重化及び負荷の多重化がなされたシステムでは
手動操作の手順書等が用意されるが、該手順が複雑にな
ったり間違った操作になる恐れがあり、マニュアル操作
だけでは確実な操作に限界があり、操作上の信頼性が低
下する。D1 Problem to be Solved by the Invention In conventional uninterruptible power supply systems, the switching devices 5 and 6 are manually operated during maintenance and inspection, and automatically switched by an undervoltage relay or the like in the event of a power outage or abnormality. For systems with multiplexed grids and multiplexed loads, manuals for manual operation are prepared, but these procedures may become complicated or lead to incorrect operation, and manual operation alone cannot guarantee reliable operation. There are limitations and operational reliability is reduced.
この点について、マニュアルに代えて自動切替えのため
のシーケンス制御手段を用意することか考えられるが、
単なる切替手順の自動化では予想されない系統状態を招
いてしまうことがある。例えば、保守点検のために１台
の無停電電源装置を切離した後、他の電源の異常発生や
負荷の急増によって電源容量が不足するとシステムダウ
ンになる。Regarding this point, it may be possible to prepare a sequence control means for automatic switching instead of a manual, but
Simply automating the switching procedure may lead to unexpected system conditions. For example, after one uninterruptible power supply is disconnected for maintenance and inspection, if the power supply capacity becomes insufficient due to an abnormality occurring in another power supply or a sudden increase in load, the system will go down.
本発明の目的は、多重化された無停電電源システムの電
源系統と負荷の切替えを確実、容易にした切替制御装置
を提供することにある。An object of the present invention is to provide a switching control device that can reliably and easily switch between power supply systems and loads in a multiplexed uninterruptible power supply system.
８０課題を解決するための手段と作用
本発明は前記目的を達成するため、複数の無停電電源装
置を有する電源系統を複数系統設け、各系統と複数の負
荷との間に瞬時ラップ切換装置と開閉器で構成する網目
構成の系統切替回路を設け、操作信号又は制御信号に応
じて前記無停電電源装置と負荷の接続を切替える手順を
有して前記系統切替回路をシーケンス制御しかつ前記系
統の電源情報と負荷情報及び自然；境情報を該ノーケン
ス制御の条件にするシーケンサを設け、シーケンス制御
によって適切な手順による系統自動切替えをし、網目構
成の系統切替回路によって切換装置等の故障にも給電経
路を確保し、電源情報や負４：Ｉ情報を系統切替えの条
件にするシーケンス制御によって適正な切替えを行う。In order to achieve the above-mentioned object, the present invention provides a plurality of power supply systems having a plurality of uninterruptible power supply devices, and includes an instantaneous lap switching device between each system and a plurality of loads. A system switching circuit having a mesh configuration composed of switches is provided, and the system switching circuit is sequentially controlled by having a procedure for switching the connection between the uninterruptible power supply and the load according to an operation signal or a control signal, and A sequencer is installed that uses power supply information, load information, and environmental information as conditions for the no-kense control. Sequence control automatically switches the system according to appropriate procedures, and the grid-structured system switching circuit allows power to be supplied even in the event of a failure in switching equipment, etc. Proper switching is performed by securing a route and using sequence control that uses power supply information and negative 4:I information as conditions for system switching.
Ｆ 実施例
第１図は本発明の一実施例を示すシステム構成図である
。同図はＡ系統とＢ系統の電源系統及び負荷系統を備え
、夫々の系統に３つの無停電電源装置と２つの負荷を備
え、各電源と各負荷を切換装置等で切替え接続する場合
を示す。Ａ系統の電源１１１〜１１．及びＢ系統の電源
１２．〜１２３は夫々電源開閉器１３．〜１３．．１４
．〜１４．を介して電源母線１５．１６に異なる位置で
接続される。切換装置１７〜２０は夫々Ａ系統とＢ系統
の電源母線１５．１６から電力取出しができるよう布線
され、内部の半導体スイッチ（ＧＴＯやサイリスタ）に
よって瞬時ラップで一方の系統に切替えた電源出力を得
る。このとき、切換装置１７〜２０と電源母線２５．１
６との間の布線は該母線の異なる位置で接続され、電源
母線の切断や布線の切断事故にも何れかの電源から受電
できる網目結合にされる。F. Embodiment FIG. 1 is a system configuration diagram showing an embodiment of the present invention. The figure shows a case where the A system and B system power supply system and load system are provided, each system is equipped with three uninterruptible power supplies and two loads, and each power supply and each load are switched and connected using a switching device, etc. . A-system power supplies 111-11. and B system power supply 12. -123 are power switches 13. to 123, respectively. ~13. ．． 14
．． ~14. are connected at different positions to the power supply bus 15,16 via. The switching devices 17 to 20 are wired so that power can be taken out from the power bus lines 15 and 16 of the A system and B system, respectively, and the power output is switched to one system in an instantaneous wrap using an internal semiconductor switch (GTO or thyristor). obtain. At this time, the switching devices 17 to 20 and the power supply bus 25.1
6 are connected at different positions on the busbar, and are connected in a mesh manner so that power can be received from either power source even if the power supply busbar is disconnected or the wiring is accidentally disconnected.
切換装置１７〜２０の出力側は夫々負荷開閉器２１〜２
４を介して負荷２５〜２８に接続されると共に、他系統
の負荷への給電ができるよう負荷開閉器２９〜３２を介
した布線がなされる。The output sides of the switching devices 17 to 20 are connected to load switches 21 to 2, respectively.
It is connected to loads 25 to 28 via line 4, and wired via load switches 29 to 32 so that power can be supplied to loads of other systems.
上記の構成により、Ａ系統の電源ダウンにはＢ系統から
の給電を可能にすると共に同じ系統内での電源の切替え
でその保守点検等を可能にする。With the above configuration, when the A system is powered down, power can be supplied from the B system, and maintenance and inspection can be performed by switching the power supply within the same system.
また、該給電を切換装置１７〜２０の切替えで行う系統
切替えと、負荷開閉器２１〜２４と２９〜３２の切替え
で行う系統切替えの２つの経路を持ち、切換装置等の故
障にも迂回路形成で負荷への給電路を確保する。なお、
負荷開閉器２１〜２４．２９〜３２による系統切替えに
も切換装置１７〜２０との協同で瞬時ラップ切替えにな
る。例えば、負荷開閉器２１から２９への切替えには切
換装置１７によってＢ系統の電源を開閉器２１に瞬時ラ
ップで接続し、次いて開閉器２９を投入して同じＢ系統
の並列状態にし、次いで開閉器２１を開路する手順によ
って実現される。In addition, there are two routes for power supply: grid switching by switching the switching devices 17 to 20, and grid switching by switching the load switches 21 to 24 and 29 to 32. Secure the power supply path to the load by forming the In addition,
System switching by the load switches 21 to 24 and 29 to 32 also results in instantaneous lap switching in cooperation with the switching devices 17 to 20. For example, to switch from the load switch 21 to 29, the switching device 17 connects the power supply of the B system to the switch 21 with an instantaneous wrap, then the switch 29 is turned on to make the same B system parallel, and then This is realized by the procedure of opening the switch 21.
上述までの系統切替えは、シーケンサ３３によって自動
切替えがなされ、シーケンサ３３には電源１１．〜ＩＬ
及び１２１〜１２．のうちの保守点検や故障発生で特定
される電源番号等の設定又は保護リレーからのトリップ
信号に対する最適な切替手順が用意され、誤りのない自
動切替制御を行う。The system switching described above is automatically performed by the sequencer 33, and the sequencer 33 is connected to the power supply 11. ~IL
and 121-12. Optimal switching procedures are prepared for settings such as power supply numbers that are identified during maintenance inspections or failure occurrences, or trip signals from protection relays, and automatic switching control is performed without errors.
ここで、シーケンサ３３は、操作指令やリレー信号のほ
かに、電源情報と負荷情報及び環境情報を取込み、これ
ら情報から切替手順実行に条件を付加することで適切な
系統切替えを行う。これを以下に詳細に説明する。Here, the sequencer 33 takes in power supply information, load information, and environmental information in addition to operation commands and relay signals, and performs appropriate system switching by adding conditions to the switching procedure execution from these information. This will be explained in detail below.
電源情報は、例えば過去２４時間以内に停電や異常な電
圧変動があったか否かの情報や今後２４時間以内に停電
の予定があるか否かの情報など、各電源について及び両
系統についての電源機能喪失の予測情報にされる。負荷
情報は、例えば過去２４時間以内に急激な負荷の増加・
変動かあフたか否かの情報や今後２４時間内に負荷の増
加・変動が予定されるか否かの情報など、各負荷につい
ての負荷変動の予測情報にされる。環境情報は、例えば
過去２４時間内に異常な温度上昇や雷等の発生があった
か否かの情報や今後２４時間内にそれらが予想されるか
否かの情報など、自然環境についての系統への影響予測
情報にされる。Power supply information includes power supply functions for each power supply and both systems, such as information on whether there has been a power outage or abnormal voltage fluctuation within the past 24 hours, or information on whether there is a power outage planned within the next 24 hours. Used as predictive information of loss. Load information may include, for example, a sudden increase in load within the past 24 hours.
This information is used to predict load fluctuations for each load, such as information on whether there is a fluctuation or a slug, and information on whether an increase or fluctuation in load is planned within the next 24 hours. Environmental information includes information on systems related to the natural environment, such as information on whether there has been an abnormal temperature rise or lightning in the past 24 hours, or information on whether these are expected in the next 24 hours. It will be used as impact prediction information.
これら各情報を取込むシーケンサ３３は、各情報を系統
切替えの制約条件とする。例えば、Ａ系統に停電予定が
あるときにはＢ系統の電源について保守点検等の指令が
与えられるも、そのためのＢ系統の電源切離しはシステ
ムダウンの恐れがあるためＢ系統の電源切離しを禁止し
、この理由をＣＲＴ等に表示して操作員に知らせる。ま
た、電源１１２に異常な電圧変動があったとき、同じ系
統の電源Ｉｆ、や１１３の保守点検等のための切離しを
禁止すると共に電源ｌｉｔの保守点検の必要性を表示出
力する。同様に、負荷変動が予測されるときは、電源切
離しを禁止して負荷増に必要な電源容量を確保する。ま
た、環境情報として落雷による停電の恐れがあるときに
両系統の一方のダウンに備えて電源切離しを禁止する。The sequencer 33 that takes in each of these pieces of information uses each piece of information as a constraint condition for system switching. For example, when a power outage is scheduled for system A, a command such as maintenance and inspection is given for the power supply of system B, but disconnecting the power of system B for this purpose may cause a system down, so disconnecting the power of system B is prohibited, and this is prohibited. Display the reason on a CRT, etc. and notify the operator. Further, when there is an abnormal voltage fluctuation in the power supply 112, disconnection for maintenance and inspection of the power supply If and 113 of the same system is prohibited, and a display is output indicating the necessity of maintenance and inspection of the power supply Lit. Similarly, when load fluctuations are predicted, disconnection of the power supply is prohibited to ensure the power supply capacity necessary for increasing the load. In addition, environmental information prohibits power disconnection in case one of both systems goes down when there is a risk of a power outage due to lightning.
このような各情報に基づいた系統切替えの制約を行うこ
とで、電源確保を確実にした系統切替えを行う。なお、
特別緊急を必要とする場合には操作員の介入によってい
くつかの条件を外して緊急要件を優先実行させることも
可能である。By restricting system switching based on such information, system switching can be performed while ensuring power supply. In addition,
If a special emergency is required, it is also possible to remove some conditions and prioritize execution of the emergency requirements through operator intervention.
Ｇ１発明の効果
以上のとおり、本発明によれば、多重化した無停電電椋
ンステムにおける系統切替えにシーケンサによる自動切
替えを行い、しかも電源情報等を系統切替条件にするよ
うにしたため、従来の手動操作に較べて電源断等の誤り
を無くした確実・容易な系統切替えになり、電源情報等
をシーケンス制置の条件とすることで系統切替指令によ
る系統構成の適正化を得て確実な系統切替えになる。G1 Effects of the Invention As described above, according to the present invention, system switching in a multiplexed uninterruptible power grid system is performed automatically by a sequencer, and power information etc. are used as system switching conditions, so that conventional manual switching is not required. Compared to manual operation, system switching is reliable and easy, eliminating errors such as power outages, and by using power information, etc. as a condition for sequence installation, system configuration can be optimized by system switching commands, resulting in reliable system switching. become.
第１図は本発明の一実施例を示すシステム構成図、第２
図は従来のシステム構成図である。
１１、．１２．・・・無停電電源装置、１３．．１４□
・・・電源開閉器、１５．１６・・・電源母線、１７．
Ｉ９・・・切換装置、２１．２３・・・負荷開閉器、２
５゜２８・・・負荷、３３・・・シーケンサ。
、 外１名
第２図
肱米ＯンステＡ棉１べ■Fig. 1 is a system configuration diagram showing one embodiment of the present invention;
The figure is a conventional system configuration diagram. 11. 12. ...Uninterruptible power supply, 13. ．． 14□
...Power switch, 15.16...Power bus, 17.
I9...Switching device, 21.23...Load switch, 2
5゜28...Load, 33...Sequencer. , 1 other person 2nd picture Elbow rice O Ste A cotton 1be■
Claims (1)
統設け、各系統と複数の負荷との間に瞬時ラップ切換装
置と開閉器で構成する網目構成の系統切替回路を設け、
操作信号又は制御信号に応じて前記無停電電源装置と負
荷の接続を切替える手順を有して前記系統切替回路をシ
ーケンス制御しかつ前記系統の電源情報と負荷情報及び
自然環境情報を該シーケンス制御の条件にするシーケン
サを設けたことを特徴とする無停電電源システムの系統
切替装置。(1) A plurality of power supply systems each having a plurality of uninterruptible power supply devices are provided, and a grid switching circuit consisting of an instantaneous lap switching device and a switch is provided between each system and the plurality of loads;
The system switching circuit is sequentially controlled by having a procedure for switching the connection between the uninterruptible power supply and the load in accordance with an operation signal or a control signal, and the power supply information, load information, and natural environment information of the system are controlled in the sequence control. A system switching device for an uninterruptible power supply system, characterized by having a sequencer that sets conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2306821A JP3047458B2 (en) | 1990-11-13 | 1990-11-13 | System switching device for uninterruptible power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2306821A JP3047458B2 (en) | 1990-11-13 | 1990-11-13 | System switching device for uninterruptible power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04183234A true JPH04183234A (en) | 1992-06-30 |
| JP3047458B2 JP3047458B2 (en) | 2000-05-29 |
Family
ID=17961664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2306821A Expired - Lifetime JP3047458B2 (en) | 1990-11-13 | 1990-11-13 | System switching device for uninterruptible power supply system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047458B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099469A (en) * | 2006-10-13 | 2008-04-24 | Fuji Electric Systems Co Ltd | Control method of uninterruptible power supply system |
| JP2010220424A (en) * | 2009-03-18 | 2010-09-30 | Fuji Electric Systems Co Ltd | Uninterruptible power supply system |
| JP2011004533A (en) * | 2009-06-19 | 2011-01-06 | Fujitsu Telecom Networks Ltd | Power supply apparatus |
| JP2013207843A (en) * | 2012-03-27 | 2013-10-07 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply system |
| CN107889307A (en) * | 2017-11-02 | 2018-04-06 | 宁波市江北九方和荣电气有限公司 | A kind of vehicle passenger cab illumination redundancy backup power supply circuit and control method |
| JP2020162383A (en) * | 2019-03-28 | 2020-10-01 | 北海道電力株式会社 | Uninterruptible switching device, switching breaker device, and uninterruptible switching system |
-
1990
- 1990-11-13 JP JP2306821A patent/JP3047458B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099469A (en) * | 2006-10-13 | 2008-04-24 | Fuji Electric Systems Co Ltd | Control method of uninterruptible power supply system |
| JP2010220424A (en) * | 2009-03-18 | 2010-09-30 | Fuji Electric Systems Co Ltd | Uninterruptible power supply system |
| JP2011004533A (en) * | 2009-06-19 | 2011-01-06 | Fujitsu Telecom Networks Ltd | Power supply apparatus |
| JP2013207843A (en) * | 2012-03-27 | 2013-10-07 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply system |
| CN107889307A (en) * | 2017-11-02 | 2018-04-06 | 宁波市江北九方和荣电气有限公司 | A kind of vehicle passenger cab illumination redundancy backup power supply circuit and control method |
| JP2020162383A (en) * | 2019-03-28 | 2020-10-01 | 北海道電力株式会社 | Uninterruptible switching device, switching breaker device, and uninterruptible switching system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3047458B2 (en) | 2000-05-29 |
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