JPH06284573A - Power breaking controller - Google Patents
Power breaking controllerInfo
- Publication number
- JPH06284573A JPH06284573A JP5074481A JP7448193A JPH06284573A JP H06284573 A JPH06284573 A JP H06284573A JP 5074481 A JP5074481 A JP 5074481A JP 7448193 A JP7448193 A JP 7448193A JP H06284573 A JPH06284573 A JP H06284573A
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- circuit
- load
- current value
- current
- detection signal
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電源となる主幹電源回
路から分岐された複数の負荷回路の遮断又は復帰を制御
する電源遮断制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cutoff control device for controlling cutoff or restoration of a plurality of load circuits branched from a main power supply circuit serving as a power supply.
【０００２】[0002]
【従来の技術】従来、この種の電源遮断制御装置として
図５に示す構成のものが存在する。このものは、図中に
おいて一点鎖線で囲むように、入力部A 、演算回路B 、
出力部C を備えている。2. Description of the Related Art Conventionally, there is a power shutoff control device of this type having a structure shown in FIG. As shown in the figure, the input section A, the arithmetic circuit B, and the
The output section C is provided.
【０００３】入力部A は、分岐された複数の負荷回路
C1,C2,C3,C4 への電源となる主幹電源回路S の電流検出
信号を電流トランスCT0 から受ける。The input section A is composed of a plurality of branched load circuits.
The current transformer CT 0 receives the current detection signal of the main power supply circuit S, which is the power supply to C 1 , C 2 , C 3 , and C 4 .
【０００４】演算回路B は、入力部A からの電流検出信
号による主幹電源回路S の使用電流値が許容電流値を越
えて過電流状態になったとき、負荷回路C1,C2,C3,C4 を
予め設定された順序に従い遮断し、また過電流状態が解
消されたとき自動的に復帰するよう判断する。When the operating current value of the main power supply circuit S by the current detection signal from the input section A exceeds the allowable current value and becomes the overcurrent state, the arithmetic circuit B becomes the load circuits C 1 , C 2 , C 3 Then, C 4 is shut off according to a preset order, and it is determined to automatically recover when the overcurrent state is resolved.
【０００５】出力部C は、演算回路B から受けた遮断又
は復帰の制御信号を出力し、その制御信号により負荷回
路C1,C2,C3,C4 に接続されている制御用リレーの接点
R1,R2,R3,R4 が遮断又は復帰する。The output section C outputs a control signal for cutoff or recovery received from the arithmetic circuit B, and the control signal of the control relay connected to the load circuits C 1 , C 2 , C 3 , C 4 by the control signal. contact
R 1 , R 2 , R 3 and R 4 are shut off or restored.
【０００６】その動作状態のタイムチャートを示したの
が図６であって、図中、I は主幹電源回路S の電流で、
I0がその許容電流値、Idが復帰するために設定された最
小電流値であり、また負荷回路C1,C2,C3,C4 に流れる電
流がI1,I2,I3,I4 である。そして、I1＞I4＞I3＞I2の関
係があり、遮断のときはI1,I2,I3,I4 の順番で行われ、
復帰のときはその逆の順番で行われるよう設定されてい
る。FIG. 6 shows a time chart of the operating state. In the figure, I is the current of the main power supply circuit S,
I 0 is its allowable current value, Id is the minimum current value set for recovery, and the current flowing in the load circuits C 1 , C 2 , C 3 , C 4 is I 1 , I 2 , I 3 , I 4 Then, there is a relation of I 1 > I 4 > I 3 > I 2 , and in the case of interruption, it is performed in the order of I 1 , I 2 , I 3 , I 4 .
When returning, it is set to be performed in the reverse order.
【０００７】[0007]
【発明が解決しようとする課題】上記した電源遮断制御
装置にあっては、図６に示すように、主幹電源回路S の
電流I ＞許容電流値I0となって過電流状態になると、設
定されている順番に従ってI1,I2,I3が遮断されてI ＜I0
となる。ところが、もしこのとき、I1の次にI3が遮断さ
れると、その時点でI ＜I0となるので、図６の場合は不
必要なI2を遮断していることになる。In the above-described power interruption control device, as shown in FIG. 6, when the current I of the main power supply circuit S> the permissible current value I 0 and the overcurrent state is set, the setting is made. I 1 , I 2 and I 3 are cut off according to the order in which I <I 0
Becomes However, at this time, if I 3 is cut off after I 1 , then I <I 0 at that time, so in the case of FIG. 6, unnecessary I 2 is cut off.
【０００８】また、電流I がさらに減少して復帰するた
めに設定された最小電流値Idに達すると、設定されてい
る順番つまりI3,I2,I1の順番で、遮断されている負荷回
路がすべて復帰し、すぐにI ＞I0となって過電流状態に
なるので、再びI1が遮断され、繰り返し負荷機器を停止
することになる。ところが、もしこのとき、I1まで復帰
しなければ、その時点では過電流状態になっていないの
で、図６の場合は、無駄にI1を復帰及び遮断しているこ
とになる。Further, when the current I reaches the minimum current value Id set for further reduction and recovery, the load that is cut off in the set order, that is, I 3 , I 2 , I 1 . circuit all restored immediately because become I> I 0 becomes overcurrent state, is blocked I 1 again, will stop the repeated load. However, at this time, if the current does not return to I 1 , the current is not overcurrent at that time, so in the case of FIG. 6, I 1 is unnecessarily restored and cut off.
【０００９】そこで、負荷機器の復帰後すぐに過電流状
態にならないように復帰待ち時間を長くしたり、最小電
流値Idをより低く設定していると、負荷機器の停止時間
が必要以上に長くなり、例えば電気温水器や蓄熱暖房器
のようにタイマーで制御している機器等は機能を損なう
場合もある。Therefore, if the waiting time for restoration is set longer or the minimum current value Id is set lower so that the overcurrent state does not occur immediately after the restoration of the load equipment, the stop time of the load equipment becomes longer than necessary. Therefore, for example, a device such as an electric water heater or a heat storage heater controlled by a timer may lose its function.
【００１０】本発明は、上記事由に鑑みてなしたもの
で、その目的とするところは、不必要な負荷回路を遮断
又は復帰させないで済む電源遮断制御装置を提供するこ
とにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power shutoff control device that does not shut off or restore an unnecessary load circuit.
【００１１】[0011]
【課題を解決するための手段】上記した課題を解決する
ために、本発明の電源遮断制御装置は、分岐された複数
の負荷回路への電源となる主幹電源回路の電流検出信号
を受ける入力部と、入力部からの電流検出信号に基づい
て負荷回路の遮断又は復帰を判断する演算回路と、演算
回路から受けた遮断又は復帰の制御信号を出力する出力
部と、備えた電源遮断制御装置において、主幹電源回路
の電流検出信号が許容電流値を越えると、演算回路が許
容電流値以内で最大電流値となるよう遮断できる最小個
数の負荷回路の組合せを選択し、また遮断後に許容電流
値を越えなよう復帰できる負荷回路を適宜選択し得るよ
う、各負荷回路の負荷電流値を記憶した記憶部を演算回
路に接続してなる構成にしてある。In order to solve the above-mentioned problems, the power cutoff control device of the present invention is an input section for receiving a current detection signal of a main power supply circuit which is a power supply to a plurality of branched load circuits. In the power cutoff control device, an arithmetic circuit that determines whether to interrupt or restore the load circuit based on a current detection signal from the input unit, an output unit that outputs a control signal for interrupting or restoring received from the arithmetic circuit, , When the current detection signal of the main power supply circuit exceeds the allowable current value, select the combination of the minimum number of load circuits that can be cut off so that the arithmetic circuit reaches the maximum current value within the allowable current value. In order to properly select the load circuit that can recover so as not to exceed the limit, the storage unit storing the load current value of each load circuit is connected to the arithmetic circuit.
【００１２】[0012]
【作用】本発明の電源遮断制御装置によれば、主幹電源
回路の電流検出信号が許容電流値を越えると、演算回路
は、各負荷回路の負荷電流値のデータ授受を記憶部との
間で行い、最小個数の負荷回路の組合せを選択して許容
電流値以内で最大電流値となるよう遮断し、また遮断後
に負荷回路を適宜選択して許容電流値を越えなよう復帰
する制御信号を出力するので、不必要な負荷回路を遮断
又は復帰させずに効率良く制御できる。According to the power cutoff control device of the present invention, when the current detection signal of the main power supply circuit exceeds the allowable current value, the arithmetic circuit transfers data of the load current value of each load circuit to and from the storage section. Select the combination of the minimum number of load circuits, cut off so that the maximum current value is within the allowable current value, and select the load circuit appropriately after cutting off and output the control signal to return so as not to exceed the allowable current value. Therefore, the load circuit can be efficiently controlled without interrupting or restoring the unnecessary load circuit.
【００１３】[0013]
【実施例】本発明の一実施例を図１乃至図４に基づいて
説明する。この電源遮断制御装置は、図１において一点
鎖線で囲むように、入力部1 、演算回路2 、記憶部3 、
出力部4 を備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. This power cutoff control device includes an input unit 1, an arithmetic circuit 2, a storage unit 3,
It has an output unit 4.
【００１４】入力部1 は、主幹ブレーカB0を通って来た
主幹電源回路S の電流I を検出する電流トランスCT0 の
電流検出信号と、電源となる主幹電源回路S から分岐さ
れた複数の負荷回路C1,C2,C3,C4 の負荷電流I1,I2,I3,I
4 をそれぞれ検出する電流トランスCT1,CT2,CT3,CT4 の
電流検出信号とを受ける。上記負荷回路C1,C2,C3,C
4は、それぞれ分岐ブレーカB1,B2,B3,B4 及び回路を遮
断又は復帰させる制御用リレーの接点R1,R2,R3,R4 を通
って負荷機器L1,L2,L3,L4 に接続されている。The input section 1 includes a current detection signal of a current transformer CT 0 for detecting a current I of the main power supply circuit S 1 that has passed through the main breaker B 0 , and a plurality of main power supply circuits S serving as power supplies. Load current of load circuit C 1 , C 2 , C 3 , C 4 I 1 , I 2 , I 3 , I
4 and the current detection signals of the current transformers CT 1 , CT 2 , CT 3 and CT 4 for detecting 4 respectively. Load circuit C 1 , C 2 , C 3 , C
4 is a load breaker L 1 , L 2 through branch breakers B 1 , B 2 , B 3 , B 4 and contact points R 1 , R 2 , R 3 , R 4 of a control relay for breaking or restoring the circuit. , L 3 , L 4 are connected.
【００１５】演算回路2 は、入力部1 からの電流検出信
号による主幹電源回路S の電流I が許容電流値I0を越え
て過電流状態になったとき、後述するように、各負荷回
路の負荷電流値I1,I2,I3,I4 のデータ授受を記憶部3 と
の間で行い、最小個数の負荷回路の組合せを選択して許
容電流値I0以内で最大電流値となるよう遮断し、また遮
断後に負荷回路を適宜選択して許容電流値I0を越えなよ
う復帰する制御信号を出力する。許容電流値I0は設定／
表示部5 により設定される。When the current I of the main power supply circuit S due to the current detection signal from the input section 1 exceeds the permissible current value I 0 and is in an overcurrent state, the arithmetic circuit 2 operates as described below for each load circuit. Data of load current values I 1 , I 2 , I 3 , I 4 is exchanged with the storage unit 3, and the combination of the minimum number of load circuits is selected to obtain the maximum current value within the allowable current value I 0. In this way, a control signal for outputting a control signal that appropriately selects the load circuit after the cutoff and returns so that the allowable current value I 0 is not exceeded is output. Allowable current value I 0 is set /
It is set by the display unit 5.
【００１６】記憶部3 は、遮断又は復帰している負荷回
路とその負荷電流値を記憶し、演算回路2 との間でその
データ授受を行う。The storage unit 3 stores the load circuit that has been cut off or restored and its load current value, and exchanges the data with the arithmetic circuit 2.
【００１７】出力部4 は、演算回路2 から受けた遮断又
は復帰の制御信号を出力し、その制御信号により負荷回
路C1,C2,C3,C4 に接続されている制御用リレーの接点
R1,R2,R3,R4 が遮断又は復帰する。The output unit 4 outputs a control signal for interruption or restoration received from the arithmetic circuit 2, and the control signal of the control relay connected to the load circuits C 1 , C 2 , C 3 , C 4 by the control signal. contact
R 1 , R 2 , R 3 and R 4 are shut off or restored.
【００１８】その動作手順を図２のフローチャート及び
図３のタイムチャートに基づいて説明する。ここで負荷
電流はI1＞I4＞I3＞I2の関係がある。The operation procedure will be described with reference to the flowchart of FIG. 2 and the time chart of FIG. Here, the load current has a relation of I 1 > I 4 > I 3 > I 2 .
【００１９】まず、フロー11において、主幹電源回路S
の電流I を検出し、フロー12において、過電流状態つま
り電流I ＞許容電流値I0となると制御が開始される。す
なわちフロー13おいて、各負荷回路の負荷電流値I1,I2,
I3,I4 を検出しその中で１台を停止することで過電流を
解除できる負荷機器が存在するかを判断し、それが存在
する場合はフロー14おいて、I ＞I0となる一番電流値の
小さい負荷回路を遮断しその電流値を記憶部3 で記憶
し、一方、I ＞I0とならない場合はフロー15おいて、図
３に示すように、電流値が一番大きい負荷回路C1を待ち
時間t1後に制御用リレーの接点R1で遮断し、その負荷電
流値I1を記憶部3 で記憶する。このとき、待ち時間t
1は、図４に示すように、ブレーカの持つ動作特性より
も短い時間で動作するようになっている。次いでフロー
16おいて、過電流I から残りの負荷回路の電流値を引い
て許容電流値I0以下になる最小電流値の負荷回路C3を時
間t3後に制御用リレーの接点R3で遮断し、その負荷電流
値I3を記憶部3 で記憶する。このとき許容電流値I0以下
にならない場合はフロー15から繰り返し、フロー17にお
いて、全ての負荷回路を遮断しても過電流を解除できな
い場合はフロー18において警報を出力する。First, in flow 11, the main power supply circuit S
Is detected, and in the flow 12, when the overcurrent state, that is, the current I> the allowable current value I 0 , the control is started. That is, in the flow 13, the load current values I 1 , I 2 ,
It is determined whether there is a load device that can release the overcurrent by detecting I 3 and I 4 and stopping one of them, and if so, I> I 0 in Flow 14. The load circuit with the smallest current value is shut off, and the current value is stored in the storage unit 3. On the other hand, if I> I 0 is not satisfied, then in Flow 15, the current value is the largest, as shown in FIG. The load circuit C 1 is cut off at the contact R 1 of the control relay after the waiting time t 1 and the load current value I 1 is stored in the storage unit 3. At this time, the waiting time t
As shown in FIG. 4, 1 operates in a shorter time than the operating characteristics of the breaker. Then flow
At 16, the load circuit C 3 with the minimum current value that is less than the allowable current value I 0 by subtracting the current value of the remaining load circuit from the overcurrent I is disconnected at the contact R 3 of the control relay after time t 3 . The load current value I 3 is stored in the storage unit 3. At this time, if the allowable current value I 0 or less is not reached, the process is repeated from the flow 15, and if the overcurrent cannot be released even if all the load circuits are cut off in the flow 17, an alarm is output in the flow 18.
【００２０】上記の動作の後、フロー19において、過電
流の解除状態つまりI ＜I0となると、フロー20及びフロ
ー21において、遮断している負荷回路の電流値を記憶部
3 から読み取りながらその中で１台を復帰しても過電流
にならない時点つまり許容電流値I0よりも負荷電流値I3
分だけ電流I が減少するまで待機し、フロー22におい
て、接点R3を閉じることによって負荷回路C3を復帰させ
る。さらにフロー23において、遮断している残りの負荷
回路がある場合は、フロー19から繰り返し、つまり負荷
回路C1を同様に復帰させ、初期状態に戻る。After the above operation, when the overcurrent is released in the flow 19, that is, I <I 0 , in the flow 20 and the flow 21, the current value of the interrupted load circuit is stored in the storage unit.
While reading from 3, the point at which overcurrent does not occur even if one unit is restored, that is, the load current value I 3 is greater than the allowable current value I 0
Waiting until the current I decreases by an amount, the load circuit C 3 is restored in flow 22 by closing the contact R 3 . Further, in the flow 23, if there is a remaining load circuit that is interrupted, the process is repeated from the flow 19, that is, the load circuit C 1 is similarly restored and returns to the initial state.
【００２１】かかる電源遮断制御装置にあっては、主幹
電源回路S の電流I の検出信号が許容電流値I0を越える
と、演算回路2 は、各負荷回路の負荷電流値I1,I2,I3,I
4 のデータ授受を記憶部3 との間で行い、最小個数の負
荷回路の組合せを選択して許容電流値I0以内で最大電流
値となるよう遮断し、また遮断後に負荷回路を適宜選択
して許容電流値I0を越えなよう復帰する制御信号を出力
するので、不必要な負荷回路を遮断又は復帰させずに効
率良く制御できるものとなる。In such a power cutoff control device, when the detection signal of the current I of the main power supply circuit S exceeds the allowable current value I 0 , the arithmetic circuit 2 causes the load current values I 1 and I 2 of the respective load circuits. , I 3 , I
Data transfer of 4 is performed with the storage unit 3, the combination of the minimum number of load circuits is selected, the maximum current value is cut off within the allowable current value I 0 , and the load circuit is appropriately selected after the cutoff. Since a control signal for returning so that the allowable current value I 0 is not exceeded is output, efficient control can be performed without interrupting or restoring an unnecessary load circuit.
【００２２】なお、本実施例では、電流トランス及び制
御用リレーを電源遮断制御装置の外部に設けたが、装置
の内部に設けてもよい。In this embodiment, the current transformer and the control relay are provided outside the power shutoff control device, but they may be provided inside the device.
【００２３】[0023]
【発明の効果】本発明の主幹電源回路の電流検出信号が
許容電流値を越えると、演算回路は、各負荷回路の負荷
電流値のデータ授受を記憶部との間で行い、最小個数の
負荷回路の組合せを選択して許容電流値以内で最大電流
値となるよう遮断し、また遮断後に負荷回路を適宜選択
して許容電流値を越えなよう復帰する制御信号を出力す
るので、不必要な負荷回路を遮断又は復帰させずに効率
良く制御できる。When the current detection signal of the main power supply circuit of the present invention exceeds the allowable current value, the arithmetic circuit transfers data of the load current value of each load circuit to and from the storage unit, and the minimum number of loads is loaded. It is unnecessary to select a combination of circuits to cut off the current so that the maximum current value is reached within the allowable current value, and to select a load circuit after the circuit is cut off to output a control signal to restore the current value so that it does not exceed the allowable current value. The load circuit can be efficiently controlled without being cut off or restored.
【図１】本発明の一実施例を示す全体構成図である。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
【図２】同上の動作手順を示すフローチャートである。FIG. 2 is a flowchart showing an operation procedure of the above.
【図３】同上の動作を示すタイムチャートである。FIG. 3 is a time chart showing the same operation as above.
【図４】同上の動作特性を示す図である。FIG. 4 is a diagram showing operating characteristics of the same.
【図５】従来例を示す全体構成図である。FIG. 5 is an overall configuration diagram showing a conventional example.
【図６】同上の動作を示すタイムチャートである。FIG. 6 is a time chart showing the same operation.
1 入力部 2 演算回路 3 記憶部 4 出力部 S 主幹電源回路 I0 許容電流値 C1,C2,C3,C4 複数の負荷回路 I1,I2,I3,I4 負荷電流値1 Input section 2 Arithmetic circuit 3 Storage section 4 Output section S Main power supply circuit I 0 Allowable current value C 1 , C 2 , C 3 , C 4 Multiple load circuits I 1 , I 2 , I 3 , I 4 Load current value
Claims (1)
る主幹電源回路の電流検出信号を受ける入力部と、入力
部からの電流検出信号に基づいて負荷回路の遮断又は復
帰を判断する演算回路と、演算回路から受けた遮断又は
復帰の制御信号を出力する出力部と、備えた電源遮断制
御装置において、 主幹電源回路の電流検出信号が許容電流値を越えると、
演算回路が許容電流値以内で最大電流値となるよう遮断
できる最小個数の負荷回路の組合せを選択し、また遮断
後に許容電流値を越えなよう復帰できる負荷回路を適宜
選択し得るよう、各負荷回路の負荷電流値を記憶した記
憶部を演算回路に接続してなることを特徴とする電源遮
断制御装置。1. An input unit that receives a current detection signal of a main power supply circuit that serves as a power source for a plurality of branched load circuits, and an operation that determines whether the load circuit is cut off or restored based on the current detection signal from the input unit. In the power cutoff control device provided with a circuit, an output section for outputting a cutoff or recovery control signal received from the arithmetic circuit, when the current detection signal of the main power supply circuit exceeds the allowable current value,
Select the combination of the minimum number of load circuits that can be interrupted so that the arithmetic circuit reaches the maximum current value within the allowable current value, and also select the load circuit that can recover so that the allowable current value is not exceeded after the interrupt. A power cut-off control device comprising a storage unit that stores a load current value of the circuit connected to an arithmetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5074481A JPH06284573A (en) | 1993-03-31 | 1993-03-31 | Power breaking controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5074481A JPH06284573A (en) | 1993-03-31 | 1993-03-31 | Power breaking controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06284573A true JPH06284573A (en) | 1994-10-07 |
Family
ID=13548514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5074481A Pending JPH06284573A (en) | 1993-03-31 | 1993-03-31 | Power breaking controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06284573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013532465A (en) * | 2010-06-30 | 2013-08-15 | エルゴトロン，インコーポレイティド | Electric load management system and method |
| US10411468B2 (en) | 2014-09-18 | 2019-09-10 | Ergotron, Inc. | Electrical load management system and method |
-
1993
- 1993-03-31 JP JP5074481A patent/JPH06284573A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013532465A (en) * | 2010-06-30 | 2013-08-15 | エルゴトロン，インコーポレイティド | Electric load management system and method |
| US8935011B2 (en) | 2010-06-30 | 2015-01-13 | Ergotron, Inc. | Electrical load management system and method |
| US9397515B2 (en) | 2010-06-30 | 2016-07-19 | Ergotron, Inc. | Electrical load management system and method |
| US10411468B2 (en) | 2014-09-18 | 2019-09-10 | Ergotron, Inc. | Electrical load management system and method |
| US10992135B2 (en) | 2014-09-18 | 2021-04-27 | Ergotron, Inc. | Electrical load management system and method |
| US11404874B2 (en) | 2014-09-18 | 2022-08-02 | Ergotron, Inc. | Electrical load management system and method |
| US11699902B2 (en) | 2014-09-18 | 2023-07-11 | Ergotron, Inc. | Electrical load management system and method |
| US11888314B2 (en) | 2014-09-18 | 2024-01-30 | Ergotron, Inc. | Electrical load management system and method |
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