JPH04167632A - Optical information transmission/distribution automation system slave station with relay function - Google Patents
Optical information transmission/distribution automation system slave station with relay functionInfo
- Publication number
- JPH04167632A JPH04167632A JP2288575A JP28857590A JPH04167632A JP H04167632 A JPH04167632 A JP H04167632A JP 2288575 A JP2288575 A JP 2288575A JP 28857590 A JP28857590 A JP 28857590A JP H04167632 A JPH04167632 A JP H04167632A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- order system
- optical
- converter
- low
- 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
- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 230000002265 prevention Effects 0.000 claims abstract description 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000005574 cross-species transmission Effects 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、情報伝送を光で行う配電自動化システムの
子局に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slave station of a power distribution automation system that transmits information using light.
［従来の技術］
低圧側の需要家側まで対象とした従来の光情報伝送方式
を用いた配電自動化システムは、高圧線路側を運用する
上位系では、伝送路に中継器を置いた中継方式とし、需
要家側である下位系ではパッシブ方式としていた。この
ため、上位系にある子局は中継部を持ち、電気信号とし
て親局からの信号を受信し、この信号が自局宛の場合は
、その命令内容に従った処理を行った後、その結果を送
信し、あるいは他局宛の場合はその信号をそのまま次局
に送信を行うようになっていた。−［発明が解決しよう
とする課題］
このように、情報伝送を光で行う配電自動化システムで
は、上位系が中継方式であるため中継器の故障がそのま
まシステム全体の故障となる。これはシステムの信頼性
を低下させるものとなっていた。そこで、高い信頼性が
要求される上位系はパッシブ方式とするのが望ましいこ
とになる。また、従来では、下位系がパッシブ方式のた
め、光信号の減衰によって分岐数が制限されるため、面
的に広がった需要家の数や需要家の移動に対し対応する
ことができなくなっている。このため、下位系は中継方
式とし、需要家の数や移動に対応することができるよう
にする必要がある。[Conventional technology] A power distribution automation system that uses a conventional optical information transmission method that targets customers on the low-voltage side uses a relay method in which a repeater is placed on the transmission line in the upper system that operates the high-voltage line side. However, the lower system on the consumer side used a passive method. Therefore, the slave station in the upper system has a relay unit and receives the signal from the master station as an electrical signal, and if this signal is addressed to its own station, it processes it according to the contents of the command and then sends it to the master station. The result was sent, or if it was addressed to another station, the signal was sent as is to the next station. - [Problems to be Solved by the Invention] As described above, in a power distribution automation system that transmits information using light, the upper system is a relay system, so a failure in a repeater directly causes a failure in the entire system. This reduced the reliability of the system. Therefore, it is desirable that the upper system, which requires high reliability, be of a passive type. In addition, in the past, the lower system was passive, and the number of branches was limited by the attenuation of the optical signal, making it impossible to respond to the expanding number of customers or the movement of customers. . For this reason, it is necessary to use a relay system for the lower-level system so that it can cope with the number and movement of consumers.
ここで、親局によって上位系と下位系とを集中管理する
総合システムとするためには、上位系の子局が下位系へ
の信号の中継機能をもち、かつ、下位系の不当な信号が
上位系に波及しない機能を持つことが望まれる。Here, in order to create a comprehensive system in which the upper system and lower system are centrally managed by the master station, the slave stations of the upper system must have the function of relaying signals to the lower system, and must also be able to prevent illegal signals from the lower system. It is desirable to have a function that does not affect the upper system.
この発明は、このような点に鑑みてなされたもので、前
述した従来技術の欠点を解消し、配電系統に適し、しか
も上位系のシステムの信頼性を損うことがなく、情報伝
送を光で行う配電自動化システムを構築することができ
るような中継機能を持つ子局装置を提供することを目的
とする。This invention was made in view of the above points, and it solves the drawbacks of the conventional technology mentioned above, is suitable for power distribution systems, and does not impair the reliability of the upper system, and enables information transmission to be carried out optically. The purpose of this invention is to provide a slave station device with a relay function that enables the construction of an automated power distribution system.
［課題を解決するための手段〕
この発明は、中継用光−電気変換素子と電気−光変換素
子と、低圧側のシステムからの高圧側のシステムへの情
報伝送をオン、オフする回路を有し、かつ、低圧側の信
号が異常であるか否かを判断する波及防止回路とを備え
たことを特徴とする中継機能付光情報伝送配電自動化シ
システム子局である。[Means for Solving the Problems] The present invention includes a relay optical-to-electrical conversion element, an electric-to-optical conversion element, and a circuit that turns on and off information transmission from a low-voltage system to a high-voltage system. The present invention is an optical information transmission power distribution automation system slave station with a relay function, characterized in that it is equipped with a spillover prevention circuit that determines whether or not a signal on the low voltage side is abnormal.
［作 用］
情報伝送を光で行う配電自動化システムの高圧側である
上位系の子局に、下位系から上位系への不当信号波及防
止機能と、下位系への信号中継機能を持たせたことによ
り、システムの信頼性と配電系統への適用性および経済
性を大幅に向上させることが可能となる。[Function] The slave stations of the upper system, which is the high-voltage side of the power distribution automation system that uses light to transmit information, are equipped with the function of preventing unauthorized signal propagation from the lower system to the upper system and the function of relaying signals to the lower system. This makes it possible to significantly improve system reliability, applicability to power distribution systems, and economic efficiency.
［実 施 例］
以下、図面に基づいてこの発明の詳細な説明する。第１
図は中継機能付子局の一実施例の回路構成図である。即
ち、上位系から光ファイバー２によりパッシブ素子１に
よって受信した光信号を電気信号に変換する光−電気変
換器（以下、０／Ｅ変換器と記す）４と親局に光信号を
出力するために電気信号を光信号に変換する電気−光信
号変換器（以下、Ｅ１０変換器と記す）５と、下位系と
親局の光信号を中継するための０／Ｅ変換器６とＥ１０
変換器７および親局からの信号を解読し、命令に従った
処理を行う処理部８．下位系からの信号が異常であるか
どうかを判断し異常であればスイッチング動作回路９を
操作して下位系から上位系への伝送路をオフにする波及
防止回路ｌＯより構成される。[Example] Hereinafter, the present invention will be described in detail based on the drawings. 1st
The figure is a circuit configuration diagram of an embodiment of a slave station with a relay function. That is, an optical-to-electrical converter (hereinafter referred to as 0/E converter) 4 that converts an optical signal received by the passive element 1 from the upper system through the optical fiber 2 into an electrical signal and outputs the optical signal to the master station. An electrical-to-optical signal converter (hereinafter referred to as E10 converter) 5 that converts an electrical signal into an optical signal, and an 0/E converter 6 and E10 that relay optical signals between the lower system and the master station.
A processing unit 8 that decodes signals from the converter 7 and the master station and performs processing according to instructions. It is composed of a spillover prevention circuit 10 that judges whether the signal from the lower system is abnormal or not, and if it is abnormal, operates the switching operation circuit 9 to turn off the transmission path from the lower system to the upper system.
上記波及防止回路１０は、第２図に示すように下位系か
らの受信信号をクロック発生器１１から出力されるクロ
ックパルスとＡＮＤ回路１２によってＡＮＤをとり、下
位系からの信号が’ＨＩ’状態の間パルス信号を出力さ
せる。このパルス信号をカウントしながら設定時間以上
のパルス信号の連続入力があった場合、外部に信号を出
力する機能を持つカウント部１３に入力させる。カウン
タ部１３の出力信号は、スイッチング動作を行うスイッ
チング動作回路９に出力させ、スイッチング動作をさせ
る。ここで、スイッチング動作回路９へのスイッチング
指令は、子局内の処理部８からも出力することができる
ようになっており、親局からもスイッチング動作できる
ようにしている。As shown in FIG. 2, the spill prevention circuit 10 ANDs the received signal from the lower system with the clock pulse output from the clock generator 11 using the AND circuit 12, so that the signal from the lower system is in the 'HI' state. A pulse signal is output during this period. While counting this pulse signal, if a pulse signal is continuously input for a set time or longer, the pulse signal is inputted to a counting section 13 having a function of outputting the signal to the outside. The output signal of the counter section 13 is outputted to a switching operation circuit 9 that performs a switching operation, and is caused to perform a switching operation. Here, the switching command to the switching operation circuit 9 can also be output from the processing unit 8 in the slave station, so that the switching operation can also be performed from the master station.
このような機能を持った子局によって、システムの正常
運転時には、親局からの指令を上位系から下位系に中継
し、下位系からの信号は上位系に中継することができ、
下位系に異常が発生した場合には、下位系の異常信号を
上位系に中継せず、かつ、システム復旧時およびシステ
ム異常箇所発見を容易にするため親局からも下位系から
の伝送路のオン−オフ制御を行うことが可能となる。When the system is operating normally, slave stations with these functions can relay commands from the master station from the upper system to the lower system, and signals from the lower system can be relayed to the higher system.
When an abnormality occurs in the lower system, the abnormal signal from the lower system is not relayed to the upper system, and the master station also connects the transmission path from the lower system to make it easier to restore the system and find the system abnormality. It becomes possible to perform on-off control.
［発明の効果］
以上説明したとおり、この発明の中継機能付光情報伝送
配電自動化システムは、次に列挙する顕著な効果を奏す
る。[Effects of the Invention] As explained above, the optical information transmission power distribution automation system with relay function of the present invention has the following remarkable effects.
■子局が中継器としての機能を持つので、下位系の増加
および移動に対して対応し易く、拡張性に優れるという
利点がある。(1) Since the slave station has the function of a repeater, it has the advantage of being easily adaptable to the increase and movement of lower-level systems and having excellent expandability.
■下位系からの誤信号を防止することができるため、上
位系の伝送路は下位系の影響を全く受けず、上位系の信
頼性を高く保つことができる。(2) Since erroneous signals from the lower system can be prevented, the transmission path of the upper system is completely unaffected by the lower system, and the reliability of the upper system can be kept high.
■下位系の信号路を切離した状態でも子局の処理部から
の信号はそのまま伝送することができるため、上位系の
情報伝送は正常にできる。■Even if the signal path of the lower system is disconnected, the signal from the processing section of the slave station can be transmitted as is, so information transmission of the upper system can be performed normally.
■親局からの指令でスイッチ動作回路の制御ができるこ
とにより、システムの復旧および故障箇所の発見が容易
にできる。■By being able to control the switch operation circuit with commands from the master station, it is easy to restore the system and find the location of the failure.
第１図は、この発明の実施例の中継機能付光情報伝送配
電自動化システム子局の構成を示す回路図、
第２図は、波及防止回路の一例を示す回路図である。
■・・・パッシブ素子 ２・・・光ファイバ３・・・
子局
４．６・・・光−電気変換器
５．７・・・電気−光変換器
８・・・処理部 ９・・・スイッチ動作回路１
０・・・波及防止回路 １１・・・クロック発生器１２
・・・ＡＮＤ回路 １３・・・カウント部特許出願人
日立電線株式会社FIG. 1 is a circuit diagram showing the configuration of a slave station of an optical information transmission power distribution automation system with relay function according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an example of a spillover prevention circuit. ■... Passive element 2... Optical fiber 3...
Slave station 4.6... Optical-electrical converter 5.7... Electrical-optical converter 8... Processing section 9... Switch operation circuit 1
0... Spread prevention circuit 11... Clock generator 12
...AND circuit 13...Count section patent applicant Hitachi Cable, Ltd.
Claims (1)
のシステムからの高圧側のシステムへの情報伝送をオン
、オフする回路を有し、かつ、低圧側の信号が異常であ
るか否かを判断する波及防止回路とを備えたことを特徴
とする中継機能付光情報伝送配電自動化システム子局。It has a relay optical-to-electrical conversion element, an electrical-to-optical conversion element, and a circuit that turns on and off information transmission from the low-voltage system to the high-voltage system, and whether the signal on the low-voltage side is abnormal. What is claimed is: 1. An optical information transmission power distribution automation system slave station with a relay function, characterized in that it is equipped with a spillover prevention circuit that determines whether or not the transmission is negative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2288575A JP2936693B2 (en) | 1990-10-29 | 1990-10-29 | Protection circuit for optical information transmission and distribution system automation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2288575A JP2936693B2 (en) | 1990-10-29 | 1990-10-29 | Protection circuit for optical information transmission and distribution system automation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04167632A true JPH04167632A (en) | 1992-06-15 |
| JP2936693B2 JP2936693B2 (en) | 1999-08-23 |
Family
ID=17732040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2288575A Expired - Lifetime JP2936693B2 (en) | 1990-10-29 | 1990-10-29 | Protection circuit for optical information transmission and distribution system automation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2936693B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005311523A (en) * | 2004-04-19 | 2005-11-04 | Fuji Electric Systems Co Ltd | Optical communication control unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02151154A (en) * | 1988-12-01 | 1990-06-11 | Fujitsu Ltd | Maintenance line protection circuit for repeater |
-
1990
- 1990-10-29 JP JP2288575A patent/JP2936693B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02151154A (en) * | 1988-12-01 | 1990-06-11 | Fujitsu Ltd | Maintenance line protection circuit for repeater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005311523A (en) * | 2004-04-19 | 2005-11-04 | Fuji Electric Systems Co Ltd | Optical communication control unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2936693B2 (en) | 1999-08-23 |
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