JPH01185138A - Signal transmitting equipment - Google Patents
Signal transmitting equipmentInfo
- Publication number
- JPH01185138A JPH01185138A JP63006081A JP608188A JPH01185138A JP H01185138 A JPH01185138 A JP H01185138A JP 63006081 A JP63006081 A JP 63006081A JP 608188 A JP608188 A JP 608188A JP H01185138 A JPH01185138 A JP H01185138A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- line
- signal line
- high voltage
- insulated
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000005856 abnormality Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 238000002955 isolation Methods 0.000 description 7
- 230000008054 signal transmission Effects 0.000 description 5
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Landscapes
- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は信号伝送装置に係り、特に、［力系統で異状が
生じたときに異状信号を信号ラインを介して伝送するに
好適な信号伝送装置に関する。−〔従来の技術〕
従来、電力系統で異状が発生した場合、第２図に示され
るように、送電線１０内のオイル洩れを検出する故障検
出装置１２によって異状が検出されたとき、故障検出装
置１２の検出出力により常開接点１４を閉じて信号ライ
ン１６．１８のループを閉成し、遠隔地に配置されてい
る信号受信袋７１２０を作動させる構成が採用されてい
る。信号受信装置２０は電源２２から電力を受け、常開
接点１４が閉じたときに作動し、警報器及び故障表示器
を駆動するための常開接点２４を閉じるように構成され
ている。このため、信号受信装置２０が送電線１０から
離れた位置に配置されていても、信号受信装置２０の作
動に伴なう警報器及び故障表示器の駆動によって送電線
１０に異状が生じたことを確認することができる。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a signal transmission device, and in particular, [a signal transmission device suitable for transmitting an abnormal signal via a signal line when an abnormality occurs in a power system] Regarding equipment. - [Prior Art] Conventionally, when an abnormality occurs in a power system, as shown in FIG. A configuration is adopted in which the detection output of the device 12 closes the normally open contact 14 to close the loop of the signal line 16.18, thereby activating the signal receiving bag 7120 located at a remote location. The signal receiving device 20 receives power from a power source 22 and is configured to operate when the normally open contacts 14 are closed to close the normally open contacts 24 for driving alarms and fault indicators. Therefore, even if the signal receiving device 20 is placed at a location away from the power transmission line 10, it is possible to prevent abnormalities from occurring in the power transmission line 10 due to the activation of the alarm and failure indicator accompanying the operation of the signal receiving device 20. can be confirmed.
ところが、信号ライン１６．１８は送電線１０の近傍に
配置されているため、送電線１０に電流Ｉが流れたとき
の電磁誘導によって信号ライン１６．１８に高電圧が重
畳することがある。信号ライン１６．１８に高電圧が重
畳すると、信号受信装置２０．電源２２が損傷する恐れ
がある。そこで、信号ライン１６．１８とアース間に避
雷器２６．２８を設け、信号ライン１６．１８に高電圧
が重畳されたときに、この高電圧を避雷器２６゜２８を
介してアースにバイパスさせる方式が採用されている。However, since the signal lines 16.18 are arranged near the power transmission line 10, a high voltage may be superimposed on the signal lines 16.18 due to electromagnetic induction when the current I flows through the power transmission line 10. When a high voltage is superimposed on the signal line 16.18, the signal receiving device 20. The power supply 22 may be damaged. Therefore, there is a method in which a lightning arrester 26.28 is provided between the signal line 16.18 and the ground, and when a high voltage is superimposed on the signal line 16.18, this high voltage is bypassed to the ground via the lightning arrester 26.28. It has been adopted.
これにより信号ライン１６．１８に高電圧が印加されて
も、高電圧によって信号受信装置２０．電源２２が損傷
するのを防止することができる。As a result, even if a high voltage is applied to the signal line 16.18, the high voltage will cause the signal receiving device 20. Damage to the power supply 22 can be prevented.
しかし、避雷器２６．２８の両端が高電圧によって短絡
した状態になったときには、信号受信装置２０の作動ル
ープが避雷器２６．２８を介して形成され、信号受信装
置２０が作動状態となる。However, when both ends of the lightning arrester 26, 28 are short-circuited due to high voltage, an operating loop of the signal receiving device 20 is formed via the lightning arrester 26, 28, and the signal receiving device 20 is activated.
このため、従来の構成では、信号ライン１６，１８に重
畳した高電圧によって信号受信装置２０が誤作動し、送
電線１０が異状にならないときでも警報器及び故障表示
器が駆動することがあった。Therefore, in the conventional configuration, the signal receiving device 20 may malfunction due to the high voltage superimposed on the signal lines 16 and 18, and the alarm and failure indicator may be activated even when there is no abnormality in the power transmission line 10. .
本発明の目的は、信号ラインに重畳した高電圧信号の影
響を受けることなく、信号を伝送することができる信号
伝送装置を提供することにある。An object of the present invention is to provide a signal transmission device that can transmit signals without being affected by high voltage signals superimposed on a signal line.
前記目的を達成するために、本発明は、信号を伝送する
一対の信号ラインと、入力巻線と出力巻線のうち少なく
とも出力巻線がアースラインから絶縁され、入力巻線が
電源に、出力巻線が前記信号ラインにそれぞれ接続され
た絶縁変圧器と、前記信号ライン中に挿入され、該信号
ラインとは異なる信号ラインの異状を検出する検出装置
の検出信号により前記信号ラインのループを閉成する開
−聞手段と、アースラインから絶縁された状態で前
記信号ラインを介して電力を受け、前記信号ラインのル
ープが閉成されたときに制御対象を制御するための制御
信号を出力する制御信号発生手段と。To achieve the above object, the present invention includes a pair of signal lines for transmitting signals, and at least an output winding of the input winding and the output winding is insulated from the ground line, and the input winding is connected to the power supply and the output winding is insulated from the ground line. A loop of the signal line is closed by an isolation transformer having a winding connected to each of the signal lines, and a detection signal from a detection device inserted into the signal line and detecting an abnormality in a signal line different from the signal line. receiving power through the signal line while being insulated from the ground line, and outputting a control signal for controlling the controlled object when the loop of the signal line is closed; and control signal generating means.
を有する信号伝送装置を構成したものである。This configuration constitutes a signal transmission device having the following.
信号ラインとは異なる信号ラインで異状が発生すると、
開閉手段によって信号ラインのループが閉成され、制御
信号発生手段から制御対象に制御信号が出力される。こ
れにより、異状に伴なう各種の制御を実行することがで
きる。If an abnormality occurs in a signal line different from the signal line,
The loop of the signal line is closed by the opening/closing means, and the control signal is outputted from the control signal generating means to the controlled object. This makes it possible to perform various types of control in response to abnormalities.
一方、他の信号ラインからの電磁誘導によって信号ライ
ンに高電圧信号が印加されると、信号ラインの電位が高
くなる。ところが、各信号ラインの電位はアースライン
に対して高くなるが、制御信号発生手段はアースライン
から絶縁されているので、各信号ラインの電位がアース
に対して高くなっても、制御信号発生手段に印加される
電圧は定常時の電圧と同じである。このため、制御信号
発生手段が各信号ラインに重畳された高電圧信号に影響
されることなく、制御信号を出力することができる。On the other hand, when a high voltage signal is applied to the signal line by electromagnetic induction from another signal line, the potential of the signal line increases. However, although the potential of each signal line is higher than the ground line, the control signal generating means is insulated from the ground line, so even if the potential of each signal line is higher than the ground line, the control signal generating means The voltage applied to is the same as the steady state voltage. Therefore, the control signal generating means can output the control signal without being affected by the high voltage signal superimposed on each signal line.
以下１本発明の一実施例を第１図に基づいて説明する。 An embodiment of the present invention will be described below with reference to FIG.
第１図において、直流電源３０はインバータ３２を介し
て絶縁変圧器３４に接続されており、絶縁変圧器３４の
出力巻線には信号ライン３６，３８．４０．４２が接続
されている。信号ライン３６．３８中には整流器４４．
信号受信装置４６が挿入されており、信号ライン３６．
３８の端部には常開接点４８が設けられている。常開接
点４８は、故障検出装置５０により電力系統の送電線５
２に異状が生じたとき、例えば、送電線５２内でオイル
洩れが発生したときに、故障検出装置５０からの出力に
よって閉じるように構成されている。In FIG. 1, a DC power supply 30 is connected to an isolation transformer 34 via an inverter 32, and signal lines 36, 38, 40, 42 are connected to the output windings of the isolation transformer 34. In the signal line 36.38 there is a rectifier 44.
A signal receiving device 46 is inserted, and the signal line 36.
A normally open contact 48 is provided at the end of 38 . The normally open contact 48 is connected to the power transmission line 5 of the power system by the fault detection device 50.
2, for example, when an oil leak occurs within the power transmission line 52, it is configured to be closed by an output from the failure detection device 50.
整流器４４．信号受信装置４６はそれぞれ絶縁板上に載
置されており、アースラインから絶縁された状態で信号
ライン３６．３８中に挿入されている。そして信号受信
装置４６は整流器４４から直流電力を受け、常開接点４
８が閉じたときに、信号ライン４０．４２中に挿入され
た常開接点５４．５６を閉じるように構成されている。Rectifier 44. The signal receiving devices 46 are each mounted on an insulating plate and inserted into the signal lines 36, 38 while being insulated from the ground line. The signal receiving device 46 receives DC power from the rectifier 44 and the normally open contact 4
8 is configured to close a normally open contact 54.56 inserted in the signal line 40.42.
即ち、信号受信装置４６は信号ライン３６．３８のルー
プが閉成されたときに、制御対象を制御するための制御
信号を出力する制御信号発生手段として構成されている
。That is, the signal receiving device 46 is configured as a control signal generating means that outputs a control signal for controlling the controlled object when the loop of the signal lines 36, 38 is closed.
信号ライン４０，４２の端部には絶縁変圧器５８が設け
られており、絶縁変圧器５８の出力巻線にはリレー６０
が接続されている。リレー６０は常開接点５４．５６が
閉じて信号ライン４０．４２のループが閉成されたとき
に作動し、各種制御機器を駆動するための常開接点６２
を閉じるように構成されている。An isolation transformer 58 is provided at the ends of the signal lines 40 and 42, and a relay 60 is connected to the output winding of the isolation transformer 58.
is connected. The relay 60 is activated when the normally open contacts 54, 56 are closed and the loop of the signal line 40, 42 is closed, and the normally open contacts 62 are used to drive various control devices.
is configured to close.
以上の構成において、送電線５２に異状が生じると、故
障検出装置５０の検出信号によって常開接点４８が閉じ
、信号受信装置４６の作動ループが形成される。これに
より常開接点５４，５６が閉じ、リレー６０の作動によ
って常開接点５２が閉じ、各種制御機器の駆動が実行さ
れる。即ち。In the above configuration, when an abnormality occurs in the power transmission line 52, the normally open contact 48 is closed by the detection signal of the failure detection device 50, and an operating loop of the signal receiving device 46 is formed. As a result, the normally open contacts 54 and 56 are closed, and the normally open contact 52 is closed by the operation of the relay 60, and various control devices are driven. That is.
送電線５２に異状が生じたときには、電力系統の異状に
対処するための各種制御機器の駆動が開始される。When an abnormality occurs in the power transmission line 52, driving of various control devices for dealing with the abnormality in the power system is started.
一方、送電線５２に電流Ｉが流れ、電磁誘導によって信
号ライン３６，３８，４０，４２に高電圧信号が印加さ
れたときには、信号ライン３６゜３８．４０．４２の電
位が高くなる。ところが。On the other hand, when a current I flows through the power transmission line 52 and a high voltage signal is applied to the signal lines 36, 38, 40, 42 by electromagnetic induction, the potential of the signal lines 36° 38, 40, 42 becomes high. However.
各信号ラインの電位はアースラインに対して高くなるが
、整流器４４、信号受信装置４６はアースラインから絶
縁されているので、整流器４４、信号受信装置４６に直
接印加される電圧は定常時と同じ状態に維持されている
。このため、信号ライン３６．３８に重畳された高電圧
信号によって整流器４４、信号受信装置４６が損傷した
り、誤作動したりすることはない。The potential of each signal line is higher than the ground line, but since the rectifier 44 and signal receiving device 46 are insulated from the ground line, the voltage directly applied to the rectifier 44 and signal receiving device 46 is the same as during normal operation. maintained in condition. Therefore, the rectifier 44 and the signal receiving device 46 will not be damaged or malfunction due to the high voltage signal superimposed on the signal lines 36, 38.
又、絶縁変圧器３４．５８の入力巻線と出力巻線とは互
いに絶縁されているので、信号ライン３６．３８，４０
，４２に高電圧信号が印加されても、直流電源３０．イ
ンバータ３２、リレー６０が損傷したり、誤作動したり
することはない。Also, since the input winding and output winding of the isolation transformer 34.58 are insulated from each other, the signal lines 36.38, 40
, 42, even if a high voltage signal is applied to the DC power supply 30. The inverter 32 and relay 60 will not be damaged or malfunction.
以上説明したように、本発明によれば、アースラインか
ら絶縁された状態で信号を転送するようにしたので、信
号ラインに高電圧信号が重畳しても、信号ラインに重畳
した高電圧信号の影響を受けることなく、信号を伝送す
ることができ、信号伝送系の信頼性の向上に寄与するこ
とができる。As explained above, according to the present invention, since the signal is transferred while being insulated from the ground line, even if a high voltage signal is superimposed on the signal line, the high voltage signal superimposed on the signal line is Signals can be transmitted without being affected, and this can contribute to improving the reliability of the signal transmission system.
第１図は本発明の一実施例を示す構成図、第２図は従来
例の構成図である。
３４．５８・・・絶縁変圧器
３６．３８，４０，４２・・・信号ライン４４・・・整
流器
４６・・・信号受信装置
４８．５４，５６，６２・・・常開接点５０・・・故障
検出装置
５２・・・送電線FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram of a conventional example. 34.58... Isolation transformer 36. 38, 40, 42... Signal line 44... Rectifier 46... Signal receiving device 48.54, 56, 62... Normally open contact 50... Failure detection device 52...power transmission line
Claims (1)
線のうち少なくとも出力巻線がアースラインから絶縁さ
れ、入力巻線が電源に、出力巻線が前記信号ラインにそ
れぞれ接続された絶縁変圧器と、前記信号ライン中に挿
入され、該信号ラインとは異なる信号ラインの異状を検
出する検出装置の検出信号により前記信号ラインのルー
プを閉成する開閉手段と、アースラインから絶縁された
状態で前記信号ラインを介して電力を受け、前記信号ラ
インのループが閉成されたときに制御対象を制御するた
めの制御信号を出力する制御信号発生手段とを有するこ
とを特徴とする信号伝送装置。A pair of signal lines for transmitting signals, an input winding and an output winding in which at least the output winding is insulated from the ground line, the input winding is connected to the power supply, and the output winding is connected to the signal line. a transformer, a switching means inserted into the signal line and closing a loop of the signal line in response to a detection signal from a detection device that detects an abnormality in a signal line different from the signal line; and a control signal generating means for receiving electric power through the signal line in the state and outputting a control signal for controlling the controlled object when the loop of the signal line is closed. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63006081A JPH01185138A (en) | 1988-01-14 | 1988-01-14 | Signal transmitting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63006081A JPH01185138A (en) | 1988-01-14 | 1988-01-14 | Signal transmitting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01185138A true JPH01185138A (en) | 1989-07-24 |
Family
ID=11628604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63006081A Pending JPH01185138A (en) | 1988-01-14 | 1988-01-14 | Signal transmitting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01185138A (en) |
-
1988
- 1988-01-14 JP JP63006081A patent/JPH01185138A/en active Pending
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