JPH0139298B2 - - Google Patents
Info
- Publication number
- JPH0139298B2 JPH0139298B2 JP55039384A JP3938480A JPH0139298B2 JP H0139298 B2 JPH0139298 B2 JP H0139298B2 JP 55039384 A JP55039384 A JP 55039384A JP 3938480 A JP3938480 A JP 3938480A JP H0139298 B2 JPH0139298 B2 JP H0139298B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- power transmission
- output
- circuit
- protection
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 40
- 230000003287 optical effect Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
【発明の詳細な説明】
この発明は、送電線の保護装置に関し、特に送
電線のデータ等を光伝送路を介して伝送する構成
を有する送電線の保護装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power transmission line protection device, and more particularly to a power transmission line protection device having a configuration for transmitting power transmission line data and the like via an optical transmission line.
従来、この種の保護装置としては、送電線に沿
い、その複数点上で検出した各データを親局にデ
ータ送信して集収し、これらデータを比較判定し
て、送電線上の事故を検出したときは適当個所の
遮断器を動作させて事故を取り除き送電線の保護
を行うものであつた。しかし、送電線から検出さ
れたデータは、電気的な伝送路を介して親局に伝
送されるため、伝送中に電磁誘導による雑音が混
入することが多かつたこの結果、送電線が健全で
あつても、雑音によるデータで送電線の事故を誤
判定し、健全な送電線の遮断器を誤動作させてい
た。 Conventionally, this type of protection device has detected accidents on the power line by transmitting and collecting data detected at multiple points along the power line to a master station, comparing and determining the data. In such cases, circuit breakers at appropriate locations were operated to eliminate accidents and protect power lines. However, since data detected from power transmission lines is transmitted to the master station via electrical transmission lines, noise due to electromagnetic induction often gets mixed in during transmission.As a result, the power transmission lines are not healthy. Even in those cases, data from noise caused faults in power lines to be incorrectly determined, causing circuit breakers on healthy power lines to malfunction.
従来の保護装置は、以上説明したことから明ら
かなように、雑音により影響され、信頼性を高め
ることが困難という欠点があり、また、データを
伝送する部分の構成が伝送損失の補償、雑音対策
等により複雑となる欠点があつた。 As is clear from the above explanation, conventional protection devices have the disadvantage that they are affected by noise and it is difficult to improve reliability.In addition, the structure of the part that transmits data is designed to compensate for transmission loss and take measures against noise. There was a drawback that it became complicated due to etc.
この発明は、前記のような従来装置の欠点を除
去するためになされたもので、送電線から検出し
たデータの伝送を光伝送路を介して行うことによ
り、伝送路での雑音による影響を少なくできると
共に構成を簡単にして送電線保護の信頼性を高め
ることができる送電線の保護装置を提供すること
を目的とする。 This invention was made to eliminate the drawbacks of the conventional devices as described above, and by transmitting data detected from a power transmission line via an optical transmission line, the influence of noise on the transmission line is reduced. It is an object of the present invention to provide a power transmission line protection device that can be easily configured and can improve the reliability of power transmission line protection.
以下、この発明の一実施例を図について説明す
る。図において、保護対象の送電線１に対する３
つの点に子局２−１，２−２，２−３が設けられ
る。子局２−１，２−２，２−３は、いずれも同
じような構成を有するので、以下、その内部構成
を示した支局２−１について説明する。子局２−
１は、送電線１の電流を検出してこれによつて得
たデータを光信号２−１ａに変換して出力する変
換器３と、送電線１の電圧を検出して異常電圧が
検出されたときに保護出力４ａを発生する保護出
力回路４とから成る検出回路５を備え、更に、以
下で説明する親局６からの光信号２−１ｂを受信
して出力接点６ａを閉成させる出力回路６と、保
護出力回路４の保護出力４ａにより閉成されるリ
レー接点４ｂ及び上記出力接点６ａの両者が閉成
されたときに動作し、遮断器７ａを遮断動作させ
るトリツプコイル７とから成るトリツプ回路８を
備えている。各子局２−１〜２−３と親局９間の
信号の送受信は、光信号２−１ａ〜２−３ａ，２
−１ｂ〜２−３ｂで行なわれる。親局９は、光信
号２−１ａ〜２−３ａを受信し、これを電気的な
信号１０ａに変換して出力する変換器１０と、信
号１０ａに従い、周知の方法で各子局のデータを
比較判定し、送電線１の事故を検出したときは信
号１１ａを出力する保護回路１１と、信号１１ａ
を光信号２−１ｂ〜２−３ｂに変換する変換器１
２とを有する。 An embodiment of the present invention will be described below with reference to the drawings. In the figure, 3 for the power transmission line 1 to be protected
Slave stations 2-1, 2-2, and 2-3 are provided at three points. Since the slave stations 2-1, 2-2, and 2-3 all have similar configurations, the branch station 2-1 whose internal configuration is shown will be described below. Slave station 2-
1 is a converter 3 that detects the current of the power transmission line 1 and converts the obtained data into an optical signal 2-1a and outputs it, and a converter 3 that detects the voltage of the power transmission line 1 and detects abnormal voltage. a protection output circuit 4 that generates a protection output 4a when the A trip circuit 6 consisting of a circuit 6 and a trip coil 7 that operates when both the relay contact 4b and the output contact 6a, which are closed by the protective output 4a of the protective output circuit 4, are closed and causes the circuit breaker 7a to operate. A circuit 8 is provided. Transmission and reception of signals between each slave station 2-1 to 2-3 and the master station 9 is carried out by optical signals 2-1a to 2-3a, 2
-1b to 2-3b. The master station 9 includes a converter 10 that receives the optical signals 2-1a to 2-3a, converts them into electrical signals 10a, and outputs them, and a converter 10 that converts the optical signals 2-1a to 2-3a into electrical signals 10a and outputs them. A protection circuit 11 that makes a comparative judgment and outputs a signal 11a when an accident on the power transmission line 1 is detected;
converter 1 that converts into optical signals 2-1b to 2-3b
2.
次に動作について説明する。送電線１に事故が
ない状態におけるこの発明の動作は、前述の構成
の説明及び後述の事故時の動作説明から明らかな
ことであるので説明を省略する。 Next, the operation will be explained. The operation of the present invention in a state where there is no accident on the power transmission line 1 is obvious from the above-mentioned explanation of the configuration and the explanation of the operation in the event of an accident, which will be described later, so the explanation will be omitted.
いま、子局２−１，２−２間の送電線１のＦ点
で事故が発生したものとすると、保護回路１１に
入力される信号１０ａから得たデータ、即ち光信
号２−１ａ〜２−３ａを介して各子局２−１〜２
−３で検出した送電線１のデータから、保護回路
１１は、各データを比較判定することにより送電
線１に事故が発生したことを検出する。これによ
り、保護回路１１は、信号１１ａを出力し、これ
が変換器１２により光信号２−１ｂに変換され、
子局２−１の出力回路６に送られる。これによ
り、出力回路６は接点６ａを閉成する。これと共
に、送電線１の事故により、子局２−１の保護出
力回路４が保護出力４ａによりリレー接点４ｂを
閉成させているので、トリツプコイル７に電流が
流れ、遮断動作させ、保護動作を達成する。子局
２−２，２−３の動作も子局２−１のものと同じ
ようになる。 Now, if an accident occurs at point F of the power transmission line 1 between the slave stations 2-1 and 2-2, the data obtained from the signal 10a input to the protection circuit 11, that is, the optical signals 2-1a to 2-2 - Each slave station 2-1 to 2 via 3a
From the data of the power transmission line 1 detected at -3, the protection circuit 11 detects that an accident has occurred in the power transmission line 1 by comparing and determining each data. As a result, the protection circuit 11 outputs a signal 11a, which is converted into an optical signal 2-1b by the converter 12,
The signal is sent to the output circuit 6 of the slave station 2-1. This causes the output circuit 6 to close the contact 6a. At the same time, due to an accident on the power transmission line 1, the protection output circuit 4 of the slave station 2-1 closes the relay contact 4b using the protection output 4a, so current flows through the trip coil 7, causing a cutoff operation and a protection operation. achieve. The operations of the slave stations 2-2 and 2-3 are also the same as that of the slave station 2-1.
ここで、本発明においては、子局２−１〜２−
３と親局との間の信号の送受信は光伝送路を介し
ているで、電磁誘導により雑音が混入することが
なく、従来のもののように誤動作を誘発すること
が防止できている。しかしながら、例えば光信号
２−１ａの伝送路に断線等の異常が生じた場合、
親局９の変換器１０を介して保護回路１１に入力
する信号１０ａが誤つたものとなり、遮断器７ａ
を動作させる指令出力２−１ｂ〜２−３ｂを発生
する可能性がある。即ち、保護回路１１は保護区
間内の事故を判定するために、周知の如く、各子
局２−１〜２−３の光信号２−１ａ〜２−３ａか
ら得られる各子局の電流のベクトル的な総和を求
め、この値が所定値以上になれば保護区間内事故
と判定している。従つて、光信号２−１ａ伝送路
が断線すると、光信号２−１ａが零になる為、保
護回路１１が事故と判定し、光信号２−１ｂが発
生される。しかし、光信号２−１ｂにより出力回
路６が動作し、接点６ａが閉じたとしても、保護
出力回路４が動作していないので、接点４ｂが開
いており、トリツプコイル７が附勢するに到らな
い。よつて、上記伝送路の異常によつても、遮断
器７ａを誤動作させない。 Here, in the present invention, slave stations 2-1 to 2-
Since signals are transmitted and received between the controller 3 and the master station via an optical transmission line, there is no noise introduced by electromagnetic induction, and malfunctions that occur in conventional systems can be prevented. However, for example, if an abnormality such as a disconnection occurs in the transmission line of the optical signal 2-1a,
The signal 10a input to the protection circuit 11 via the converter 10 of the master station 9 is erroneous, and the circuit breaker 7a
There is a possibility that command outputs 2-1b to 2-3b for operating the controllers may be generated. That is, in order to determine an accident within the protected area, the protection circuit 11 calculates the current of each slave station obtained from the optical signals 2-1a to 2-3a of each slave station 2-1 to 2-3, as is well known. A vectorial summation is calculated, and if this value exceeds a predetermined value, it is determined that the accident is within the protected area. Therefore, when the optical signal 2-1a transmission line is disconnected, the optical signal 2-1a becomes zero, so the protection circuit 11 determines that there is an accident, and the optical signal 2-1b is generated. However, even if the output circuit 6 is activated by the optical signal 2-1b and the contact 6a is closed, the protective output circuit 4 is not activated, so the contact 4b is open and the trip coil 7 is not energized. do not have. Therefore, even if there is an abnormality in the transmission line, the circuit breaker 7a will not malfunction.
なお、前記実施例では子局と親局の接続を個別
的に行つたが、伝送の多重化技術を用い伝送路の
本数を少なくしてもよく、前記実施例と同様の効
果を奏する。 In the embodiment described above, the slave station and the master station are connected individually, but the number of transmission lines may be reduced by using transmission multiplexing technology, and the same effect as in the embodiment described above can be obtained.
以上のように、この発明によれば、各子局と親
局とのデータの伝送を光信号で伝送するようにし
たので、電磁誘導による影響を受けず、また子局
に設けた保護出力回路からの保護出力と親局から
の指令信号との論理積によつて遮断器を動作させ
るトリツプ回路を各子局に設けるように構成しの
で、たとえば伝送路断等の事故発生によつて親局
からの指令信号が発生しても、保護出力回路の保
護出力が発生されていないことにより、遮断器の
誤動作を防止し、送電線保護の信頼性を向上させ
るという効果がある。。 As described above, according to the present invention, since data is transmitted between each slave station and the master station using optical signals, it is not affected by electromagnetic induction, and the protective output circuit provided in the slave station Each slave station is equipped with a trip circuit that operates the circuit breaker based on the AND of the protection output from the master station and the command signal from the master station. Even if a command signal is generated from the circuit breaker, the protection output circuit does not generate a protection output, which has the effect of preventing malfunction of the circuit breaker and improving the reliability of power transmission line protection. .
図はこの発明の一実施例を示す送電線の保護装
置のブロツク図である。
１……送電線、２−１，２−２，２−３……子
局、５……検出回路、８……トリツプ回路、９…
…親局、１１……保護回路。
The figure is a block diagram of a power transmission line protection device showing an embodiment of the present invention. 1...Power transmission line, 2-1, 2-2, 2-3...Slave station, 5...Detection circuit, 8...Trip circuit, 9...
...Master station, 11...Protection circuit.
Claims (1)
から検出したデータを電気−光変換して送出する
変換器及び前記送電線の異常を検出したとき保護
出力を発生する保護出力回路を有する子局と、前
記各子局の変換器の出力を光伝送路を介して受信
し、各子局のデータを比較判定して前記送電線の
事故を検出したとき光伝送路を介して各子局に指
令出力を送出する親局と、前記各子局のそれぞれ
に設けられ前記保護出力及び前記指令出力の論理
積により前記送電線の遮断器を動作させるトリツ
プ回路とを備えた送電線の保護装置。1. A device installed at multiple locations along a power transmission line, which has a converter that converts data detected from the power transmission line into electrical light and sends it out, and a protection output circuit that generates a protective output when an abnormality in the power transmission line is detected. The output of the converter of the station and each of the slave stations is received via an optical transmission line, and when an accident in the power transmission line is detected by comparing and determining the data of each slave station, the output of the converter of each slave station is A power transmission line protection device comprising: a master station that sends a command output to the slave station; and a trip circuit that is provided in each of the slave stations and operates the circuit breaker of the power transmission line based on the logical product of the protection output and the command output. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3938480A JPS56136117A (en) | 1980-03-26 | 1980-03-26 | Device for protecting transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3938480A JPS56136117A (en) | 1980-03-26 | 1980-03-26 | Device for protecting transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56136117A JPS56136117A (en) | 1981-10-24 |
| JPH0139298B2 true JPH0139298B2 (en) | 1989-08-21 |
Family
ID=12551506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3938480A Granted JPS56136117A (en) | 1980-03-26 | 1980-03-26 | Device for protecting transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56136117A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140548A (en) * | 1977-05-13 | 1978-12-07 | Hitachi Ltd | Information transmission system for computer aided system protective equipment |
-
1980
- 1980-03-26 JP JP3938480A patent/JPS56136117A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140548A (en) * | 1977-05-13 | 1978-12-07 | Hitachi Ltd | Information transmission system for computer aided system protective equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56136117A (en) | 1981-10-24 |
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