JP3584604B2 - Digital relay forced operation input method - Google Patents

Digital relay forced operation input method Download PDF

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JP3584604B2
JP3584604B2 JP08344196A JP8344196A JP3584604B2 JP 3584604 B2 JP3584604 B2 JP 3584604B2 JP 08344196 A JP08344196 A JP 08344196A JP 8344196 A JP8344196 A JP 8344196A JP 3584604 B2 JP3584604 B2 JP 3584604B2
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Prior art keywords
relay
circuit
detection
accident
elements
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JPH09284979A (en
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秀二 北條
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Meidensha Corp
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Meidensha Corp
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【０００１】
【発明の属する技術分野】
本発明は、ディジタルリレーの強制動作入力方式に関するものである。
【０００２】
【従来の技術】
従来、ディジタルリレー（保護継電器）は、図２，図３に示すように、主検出リレー１と事故検出リレー２がある。それぞれのリレー１，２は独立している。リレー１，２が出力するとリレーＲＹ１，ＲＹ２が付勢され、その接点ｒｙ１，ｒｙ２が共にＯＮすると、遮断器のトリップコイル３が付勢されて系統を保護する。
【０００３】
１１は主検出リレー演算を行う複数のリレー要素１〜ｍ（１１1〜１１m）、１２はリレー演算に必要な地絡電流検出要素，過電流検出要素などの複数のリレー要素１〜ｍ（１２1〜１２m）をソフト的に選択する主検出側に設けられたリレーの要素選択部、ＳＷMは主検出リレー強制動作用操作スイッチ（例、プッシュボタンスイッチ）、１４（１４1〜１４m）は要素選択部１２から要素選択情報があることを条件にスイッチＳＷMから信号が入力すると強制動作信号を出力する論理積回路、１５（１５1〜１５m）は要素選択部１２で選択されたリレー要素１２1〜１２mに対応するリレー要素１１1〜１１mからの出力と、上記強制動作信号を通す論理和回路、１６は遮断器が投入されていることを条件に論理和回路１５（１５1〜１５m）からの信号によってリレーＲＹ１を付勢するシーケンス論理回路である。
【０００４】
２１は事故検出リレー演算をする複数のリレー要素１〜１ｎ（２１１〜２１ｎ）、ＳＷ１〜ＳＷｎは事故検出側に設けられた事故検出強制動作用操作スイッチ（例、プッシュボタンスイッチ）、２５（２５１〜２５ｎ）はリレー要素２１（２１１〜２１ｎ）からの出力とスイッチＳＷ１〜ＳＷｎからの信号を通す論理和回路、２６は遮断器が投入されていることを条件に論理和回路２５（２５１〜２５ｎ）からの信号によってリレーＲＹ２を付勢するシーケンス論理回路である。
【０００５】
しかして、この主検出リレー１側の強制動作は、ソフト的に要素選択を行うことによってスイッチＳＷＭをＯＮすることでできる。
【０００６】
また、事故検出リレー２側の強制動作は、必要な要素数だけスイッチＳＷ１〜ＳＷｎを選択することで、要素選択して行っている。
【０００７】
【発明が解決しようとする課題】
ところで、上記従来のものは、次のような問題がある。
【０００８】
（１）強制動作入力を主検出側，事故検出側からそれぞれ行わなければならない。
【０００９】
（２）事故検出側は要素数に応じたスイッチが必要となる。
【００１０】
（３）要素数に合わせて、個別に事故検出リレーボードを設計しなければいけない。つまり、事故検出リレーボードが標準化できない。
【００１１】
本発明は、従来のこのような問題点に鑑みてなされたものであり、その目的とするところは、事故検出側の要素選択を不要とし、事故検出リレーボードの標準化が計れる、ディジタルリレーの強制動作入力方式を提供することにある。
【００１２】
【課題を解決するための手段】
本発明は、主検出リレー用の複数のリレー要素と、このリレー要素と対応した複数の要素を有してソフト的に要素が選択される要素選択部、及びこの要素選択部の出力と主検出強制動作スイッチの動作信号とを主検出用の論理積回路に導入して論理積信号を得、この論理積信号と前記主検出リレー用の各リレー要素の出力信号とを主検出用の論理和回路に導入し、この論理和回路を介して得られた論理和信号をそれぞれ主検出用のシーケンス論理回路に導入し、このシーケンス論理回路の出力を遮断器のトリップコイルと直列に接続された第１のリレーに出力してオン動作させる主検出リレーと、
事故検出用の複数のリレー要素と、このリレー要素と対応した強制動作の要素選択部を有し、この強制動作の動作信号と事故検出用の各リレー要素の出力信号とをそれぞれ事故検出用の論理和回路を介して事故検出用のシーケンス論理回路に導入し、このシーケンス論理回路の出力を遮断器のトリップコイルと直列に接続された第２のリレーに出力してオン動作させる事故検出リレーとを有したディジタルリレーにおいて、
前記要素選択部の要素数を主検出リレー用の要素数と事故検出リレー用のリレー要素数とを合わせ持たせると共に、主検出リレーと事故検出リレー間に伝送手段を設け、且つ、前記事故検出リレーに事故検出用の論理積回路を設け、この事故検出用の論理積回路の一方の入力端に前記要素選択部によって選択された要素信号を伝送手段を介して導入し、事故検出用の論理積回路の他方の入力端には事故検出強制動作スイッチの動作信号を導入し、この論理積回路の出力信号を前記事故検出リレー用のシーケンス論理回路に出力するよう構成したことを特徴としたものである。
【００１３】
【発明の実施の形態】
本発明の実施の形態を図１について説明する。なお、図中従来図２に示したものと同一構成部分は、同一符号を付してその重複する説明を省略する。
【００１４】
１２′は主検出側に設けられた要素選択部で、従来主検出側で行っているソフト的なｍ個の要素選択に合わせて事故検出側のｎ個の要素選択も適用できるよう要素選択部の要素数は要素ｍ＋１〜要素ｍ＋ｎ個にしてあり、要素選択情報を主検出リレー側に出力する。
【００１５】
１３は要素選択部１２′からの要素１〜ｎの要素選択情報をシリアル伝送バスＢを介して事故検出リレー側にシリアル伝送する送信部、２３は伝送路Ｂからの要素選択情報を受けて出力する受信部である。
【００１６】
ＳＷＭおよびＳＷＦはそれぞれ主検出および事故検出強制動作用のスイッチ、１４は要素選択部１２′からの要素１〜ｍの要素選択情報があることを条件にスイッチＳＷＭの信号が入力すると論理和回路１５に出力する論理積回路である。２４は伝送部２３から要素選択情報があることを条件に論理和回路２５に出力する論理積回路である。その他の構成は従来図１と変わりがない。
【００１７】
以上のように構成されているので、スイッチＳＷＭを押すと、要素選択情報があることを条件に論理回路１４，１５，１６を介して主検出リレーが強制動作出力してリレーＲＹ１が付勢される。
【００１８】
また、スイッチＳＷＦを押すと、要素選択情報１〜ｎがあることを条件に論理回路２４，２５，２６を介して事故検出リレーが強制動作出力してリレーＲＹ２が付勢される。
【００１９】
したがってスイッチＳＷＭおよびＳＷＦを押してリレーＲＹ１，ＲＹ２が共に付勢されると、接点ｒｙ１，ｒｙ２を介してトリップコイル３が付勢され、遮断器がトリップする。
【００２０】
【発明の効果】
本発明は、上述のとおり構成されているので、次に記載する効果を奏する。
【００２１】
（１）事故検出側の複数のスイッチからなる要素選択手段が不要となる。
【００２２】
（２）そのため、要素数に基づく個別のボード設計は、主検出側は勿論のこと、事故検出側も不要となる。しかして事故検出リレーボードの標準化が計られる。
【図面の簡単な説明】
【図１】実施の形態にかかるリレー構成説明図。
【図２】従来例にかかるリレー構成説明図。
【図３】従来例の詳細を示すブロック図。
【符号の説明】
１…主検出リレー
２…事故検出リレー
３…トリップコイル
１１，２１…リレー要素
１２，１２′…要素選択部
１３…送信部
２３…受信部
Ｂ…伝送回路
ＳＷＭ，ＳＷＦ，ＳＷ１〜ＳＷｍ…強制動作用操作スイッチ。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital relay forced operation input method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, digital relays (protection relays) include a main detection relay 1 and an accident detection relay 2 as shown in FIGS. Each of the relays 1 and 2 is independent. When the relays 1 and 2 output, the relays RY1 and RY2 are energized. When the contacts ry1 and ry2 are both turned on, the trip coil 3 of the circuit breaker is energized to protect the system.
[0003]
11 main detection relay computation performed a plurality of relay elements 1 ~m (11 1 ~11 m) , 12 is a ground fault current detecting elements necessary to relay computation, a plurality of relay elements, such as over-current detection element 1 to m ( 12 1 to 12 element selection unit of the relay provided m) to the main detection side to select a software manner, SW M is the main detection relay forced operation for the operation switch (eg, a push button switch), 14 (14 1 to 14 m ) is an AND circuit that outputs a forced operation signal when a signal is input from the switch SW M on condition that there is element selection information from the element selection unit 12, and 15 (15 1 to 15 m ) is selected by the element selection unit 12 and output from the relay elements 11 1 to 11 m corresponding to the relay elements 12 1 to 12 m that is, the OR circuit through the forced operation signal, the OR circuit on condition that the circuit breaker is closed 16 15 (15 1 to 1 by a signal from the m) is a sequence logic circuit for energizing the relay RY1.
[0004]
Reference numeral 21 denotes a plurality of relay elements 1 to 1 n (21 1 to 21 n ) for performing an accident detection relay operation, and SW 1 to SW n are operation switches (for example, push button switches) for accident detection forced operation provided on the accident detection side. ) And 25 (25 1 to 25 n ) are OR circuits that pass the output from the relay element 21 (21 1 to 21 n ) and the signal from the switches SW 1 to SW n , and 26 is that a breaker is turned on which is a sequential logic circuit for energizing the relay RY2 by signal from the OR circuit 25 (25 1 ~25 n) to the condition.
[0005]
Thus, the forced operation of the main detection relay 1 side can by turning ON the switch SW M by performing software manner element selection.
[0006]
Further, the forced operation of the accident detection relay 2 side, by selecting the switch SW 1 ~SWn only the elements required number, are performed by element selection.
[0007]
[Problems to be solved by the invention]
By the way, the above-mentioned conventional one has the following problems.
[0008]
(1) Forced operation input must be performed from the main detection side and the accident detection side, respectively.
[0009]
(2) A switch corresponding to the number of elements is required on the accident detection side.
[0010]
(3) An accident detection relay board must be individually designed according to the number of elements. That is, the accident detection relay board cannot be standardized.
[0011]
The present invention has been made in view of such a conventional problem, and has as its object to obviate the need for element selection on the accident detection side and to standardize the accident detection relay board. An object of the present invention is to provide an operation input method.
[0012]
[Means for Solving the Problems]
The present invention provides a plurality of relay elements for a main detection relay, an element selection unit having a plurality of elements corresponding to the relay elements, and an element selected by software, and an output of the element selection unit and main detection. The operation signal of the forced operation switch is introduced into the AND circuit for main detection to obtain an AND signal, and the AND signal and the output signal of each relay element for the main detection relay are ORed for main detection. Circuit, and the OR signals obtained through the OR circuit are respectively introduced into a main detection sequence logic circuit, and the output of this sequence logic circuit is connected in series with the trip coil of the circuit breaker. A main detection relay that outputs to one relay and turns on;
It has a plurality of relay elements for detecting an accident, and an element selector for forced operation corresponding to the relay element, and outputs an operation signal of the forced operation and an output signal of each relay element for detecting an accident, respectively. An accident detection relay which is introduced into a sequence logic circuit for detecting an accident via an OR circuit, outputs an output of the sequence logic circuit to a second relay connected in series with a trip coil of the circuit breaker, and turns on the relay; In a digital relay having
The number of elements of the element selection unit is made to have both the number of elements for the main detection relay and the number of relay elements for the accident detection relay, and transmission means is provided between the main detection relay and the accident detection relay; An AND circuit for detecting an accident is provided in the relay, and the element signal selected by the element selecting section is introduced into one input terminal of the AND circuit for detecting an accident via a transmission means, and a logic for detecting the accident is provided. An operation signal of an accident detection forced operation switch is introduced into the other input terminal of the integrated circuit, and an output signal of the AND circuit is output to a sequence logic circuit for the accident detection relay. It is .
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIG. In the figure, the same components as those shown in FIG. 2 of the related art are denoted by the same reference numerals, and redundant description is omitted.
[0014]
12 'main detection side element selection unit provided in the conventional main detection software manner is carried out in a side of the m element selection unit so that the n elements selected accident detection side can also be applied to fit the element selection The number of elements is element m + 1 to element m + n , and element selection information is output to the main detection relay side.
[0015]
A transmission unit 13 serially transmits the element selection information of the elements 1 to n from the element selection unit 12 'to the fault detection relay side via the serial transmission bus B, and 23 receives and outputs the element selection information from the transmission path B. It is a receiving unit to perform.
[0016]
SW M and SW F are mainly detected and fault detection forced operation for the switches, respectively, 14 when the signal of the switch SW M on condition that there is an element selection information element 1~m from element selection unit 12 'is input logic This is a logical product circuit that outputs to the sum circuit 15. Reference numeral 24 denotes an AND circuit that outputs to the OR circuit 25 on condition that there is element selection information from the transmission unit 23. Other configurations are the same as those in FIG.
[0017]
Which is configured as described above, pressing the switch SW M, via the logic circuits 14, 15 and 16 on condition that there is an element selection information main detection relay forced operation output to energize the relays RY1 Is done.
[0018]
Pressing the switch SW F, relay RY2 and forced operation output accident detection relay through the logic circuits 24, 25 and 26 on condition that there is an element selection information 1~n is energized.
[0019]
Thus when the relay RY1, RY2 press switch SW M and SW F are energized together, the trip coil 3 is energized through the contacts ry1, ry2, breaker is tripped.
[0020]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0021]
(1) Element selection means including a plurality of switches on the accident detection side becomes unnecessary.
[0022]
(2) Therefore, the individual board design based on the number of elements eliminates the need for the main detection side as well as the accident detection side. Eventually, standardization of accident detection relay boards will be implemented.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a relay configuration according to an embodiment.
FIG. 2 is an explanatory diagram of a relay configuration according to a conventional example.
FIG. 3 is a block diagram showing details of a conventional example.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 main detection relay 2 accident detection relay 3 trip coils 11 and 21 relay elements 12 and 12 'element selection unit 13 transmission unit 23 reception unit B transmission circuits SW M , SW F and SW 1 to SW m : Forced operation switch.

Claims (1)

主検出リレー用の複数のリレー要素と、このリレー要素と対応した複数の要素を有してソフト的に要素が選択される要素選択部、及びこの要素選択部の出力と主検出強制動作スイッチの動作信号とを主検出用の論理積回路に導入して論理積信号を得、この論理積信号と前記主検出リレー用の各リレー要素の出力信号とを主検出用の論理和回路に導入し、この論理和回路を介して得られた論理和信号をそれぞれ主検出用のシーケンス論理回路に導入し、このシーケンス論理回路の出力を遮断器のトリップコイルと直列に接続された第１のリレーに出力してオン動作させる主検出リレーと、
事故検出用の複数のリレー要素と、このリレー要素と対応した強制動作の要素選択部を有し、この強制動作の動作信号と事故検出用の各リレー要素の出力信号とをそれぞれ事故検出用の論理和回路を介して事故検出用のシーケンス論理回路に導入し、このシーケンス論理回路の出力を遮断器のトリップコイルと直列に接続された第２のリレーに出力してオン動作させる事故検出リレーとを有したディジタルリレーにおいて、
前記要素選択部の要素数を主検出リレー用の要素数と事故検出リレー用のリレー要素数とを合わせ持たせると共に、主検出リレーと事故検出リレー間に伝送手段を設け、且つ、前記事故検出リレーに事故検出用の論理積回路を設け、この事故検出用の論理積回路の一方の入力端に前記要素選択部によって選択された要素信号を伝送手段を介して導入し、事故検出用の論理積回路の他方の入力端には事故検出強制動作スイッチの動作信号を導入し、この論理積回路の出力信号を前記事故検出リレー用のシーケンス論理回路に出力するよう構成したことを特徴としたディジタルリレーの強制動作入力方式。A plurality of relay elements for a main detection relay, an element selection unit having a plurality of elements corresponding to the relay elements and an element selected by software, and an output of the element selection unit and a main detection forced operation switch. The operation signal is introduced into an AND circuit for main detection to obtain an AND signal, and the AND signal and the output signal of each relay element for the main detection relay are introduced into an OR circuit for main detection. The OR signal obtained through the OR circuit is introduced into a sequence logic circuit for main detection, and the output of the sequence logic circuit is sent to a first relay connected in series with the trip coil of the circuit breaker. A main detection relay that outputs and turns on,
It has a plurality of relay elements for detecting an accident, and an element selector for forced operation corresponding to the relay element, and outputs an operation signal of the forced operation and an output signal of each relay element for detecting an accident , respectively . An accident detection relay which is introduced into a sequence logic circuit for detecting an accident via an OR circuit, outputs an output of the sequence logic circuit to a second relay connected in series with a trip coil of the circuit breaker, and turns on the relay; In a digital relay having
The number of elements of the element selection unit is made to have both the number of elements for the main detection relay and the number of relay elements for the accident detection relay, and transmission means is provided between the main detection relay and the accident detection relay; a logical product circuit for fault detection provided to the relay, one is an element signal selected by the element selection unit to the input terminal of the aND circuit for the fault detection is introduced through the transmission means, the logic for fault detection An operation signal of an accident detection forced operation switch is introduced into the other input terminal of the integrated circuit, and an output signal of the AND circuit is output to a sequence logic circuit for the accident detection relay. Relay forced input method.
JP08344196A 1996-04-05 1996-04-05 Digital relay forced operation input method Expired - Lifetime JP3584604B2 (en)

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JP5616733B2 (en) * 2010-09-30 2014-10-29 株式会社日立製作所 Digital protective relay device
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