JP2003121475A - Electric current detector - Google Patents
Electric current detectorInfo
- Publication number
- JP2003121475A JP2003121475A JP2001316787A JP2001316787A JP2003121475A JP 2003121475 A JP2003121475 A JP 2003121475A JP 2001316787 A JP2001316787 A JP 2001316787A JP 2001316787 A JP2001316787 A JP 2001316787A JP 2003121475 A JP2003121475 A JP 2003121475A
- Authority
- JP
- Japan
- Prior art keywords
- conductors
- conductor
- current
- voltage
- optical
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 75
- 230000003287 optical effect Effects 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005697 Pockels effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 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
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Locating Faults (AREA)
- Measurement Of Current Or Voltage (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば気中変電
所の故障区間を検出するために用いられる電流検出装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current detecting device used for detecting a faulty section of an air substation, for example.
【０００２】[0002]
【従来の技術】図３は例えば特開平６−１５３４２３号
公報に示された従来の送電線監視センサの断面図であ
り、送電線監視センサは、架線を流れる電流を測定し
て、変電所の故障区間を検出するものである。図におい
て、複導体を構成する第１及び第２の導体（送電線）１
Ａ，１Ｂには、それぞれ電流Ｉが流れる。第１の導体１
Ａには、第１の監視センサユニット９ａが設けられてい
る。第２の導体１Ｂには、第２の監視センサユニット９
ｂが設けられている。2. Description of the Related Art FIG. 3 is a cross-sectional view of a conventional power transmission line monitoring sensor disclosed in, for example, Japanese Patent Laid-Open No. 6-153423. The power transmission line monitoring sensor measures a current flowing through an overhead wire to detect a substation. This is to detect a failure section. In the figure, first and second conductors (power transmission lines) 1 forming a double conductor
A current I flows through A and 1B, respectively. First conductor 1
A is provided with a first monitoring sensor unit 9a. The second monitoring sensor unit 9 is attached to the second conductor 1B.
b is provided.
【０００３】第１の監視センサユニット９ａには、第１
のソレノイドコイル２ａ、第１の電流変成器１０ａ及び
電源処理部１１が内蔵されている。第２の監視センサユ
ニット９ｂには、第２のソレノイドコイル２ｂ、第２の
電流変成器１０ｂ及び演算処理部８が内蔵されている。
第１及び第２の監視センサユニット９ａ，９ｂ内の回路
は、リード線４により互いに接続されている。The first monitoring sensor unit 9a has a first
The solenoid coil 2a, the first current transformer 10a, and the power supply processing unit 11 are incorporated. The second monitoring sensor unit 9b contains the second solenoid coil 2b, the second current transformer 10b, and the arithmetic processing unit 8.
The circuits in the first and second monitoring sensor units 9a and 9b are connected to each other by a lead wire 4.
【０００４】第１の導体１Ａの電流は、第１のソレノイ
ドコイル２ａにより検出される。第２の導体１Ｂの電流
は、第２のソレノイドコイル２ｂにより検出される。第
１及び第２のソレノイドコイル２ａ，２ｂは、互いに直
列に接続されている。演算処理部８は、第１及び第２の
ソレノイドコイル２ａ，２ｂの出力から導体１Ａ，１Ｂ
の全電流を演算し、その測定値を地上局に送信する。The current of the first conductor 1A is detected by the first solenoid coil 2a. The current of the second conductor 1B is detected by the second solenoid coil 2b. The first and second solenoid coils 2a and 2b are connected in series with each other. The arithmetic processing unit 8 outputs the conductors 1A and 1B from the outputs of the first and second solenoid coils 2a and 2b.
Calculates the total current of, and sends the measured value to the ground station.
【０００５】第１及び第２の電流変成器１０ａ，１０ｂ
は、互いに直列に接続されている。第１及び第２の電流
変成器１０ａ，１０ｂの交流電流は、電源処理部１１に
より直流電圧に変換される。電流変成器１０ａ，１０ｂ
及び電源処理部１１により、監視センサユニット９ａ，
９ｂ用の電源装置が構成されている。First and second current transformers 10a and 10b
Are connected in series with each other. The AC currents of the first and second current transformers 10a and 10b are converted into DC voltage by the power supply processing unit 11. Current transformers 10a, 10b
And the power supply processing unit 11, the monitoring sensor unit 9a,
A power supply device for 9b is configured.
【０００６】次に、動作について説明する。導体１Ａ，
１Ｂに流れる電流Ｉは、ソレノイドコイル２ａ，２ｂを
介して電圧として検出される。それらの電圧出力は、演
算処理部８で積分処理され、電流出力に変換され、その
結果が地上局に送信される。また、演算処理部８の積分
回路や送信回路の電源は、上記の電源装置によって供給
される。Next, the operation will be described. Conductor 1A,
The current I flowing through 1B is detected as a voltage via the solenoid coils 2a and 2b. The voltage outputs are integrated by the arithmetic processing unit 8 and converted into current outputs, and the results are transmitted to the ground station. The power supply for the integration circuit and the transmission circuit of the arithmetic processing unit 8 is supplied by the above power supply device.
【０００７】[0007]
【発明が解決しようとする課題】上記のように構成され
た従来の送電線監視センサにおいては、第１及び第２の
監視センサユニット９ａ，９ｂが導体１Ａ，１Ｂの長さ
方向の同じ位置に配置されているため、導体１Ａ，１Ｂ
間の距離が小さい低電圧クラスの変電所では、第１及び
第２の監視センサユニット９ａ，９ｂが互いに干渉し、
取付が困難である。In the conventional power transmission line monitoring sensor constructed as described above, the first and second monitoring sensor units 9a and 9b are located at the same position in the length direction of the conductors 1A and 1B. Because they are arranged, conductors 1A and 1B
In a low voltage substation where the distance between them is small, the first and second monitoring sensor units 9a and 9b interfere with each other,
Installation is difficult.
【０００８】また、監視センサユニット９ａ，９ｂのい
ずれか一方のみを導体１Ａ，１Ｂのいずれか一方のみに
配置すると、監視センサユニット９ａ又は９ｂが配置さ
れていない方の導体１Ａ又は１Ｂが断線した場合、監視
センサユニット９ａ又は９ｂが配置されている側の導体
１Ａ又は１Ｂに通常時の２倍の電流（２Ｉ）が流れるこ
とになり、監視センサユニット１Ａ又は１Ｂに接続され
る故障区間検出装置が誤判定をする恐れがあった。Further, when only one of the monitoring sensor units 9a and 9b is arranged on only one of the conductors 1A and 1B, the conductor 1A or 1B on which the monitoring sensor unit 9a or 9b is not arranged is disconnected. In this case, a current (2I) that is twice as high as in the normal state flows through the conductor 1A or 1B on the side where the monitoring sensor unit 9a or 9b is arranged, and the faulty section detection device connected to the monitoring sensor unit 1A or 1B. Could make a wrong decision.
【０００９】さらに、高電圧部位に積分回路や送信回路
等の電子回路を含む演算処理部８があるため、周囲の電
磁ノイズの影響で、電子回路の誤動作や誤送信が発生し
易かった。Further, since the arithmetic processing unit 8 including an electronic circuit such as an integrating circuit and a transmitting circuit is provided in the high voltage portion, malfunction of the electronic circuit or erroneous transmission is likely to occur due to the influence of electromagnetic noise in the surroundings.
【００１０】この発明は、上記のような問題点を解決す
ることを課題としてなされたものであり、複導体を構成
する第１及び第２の導体の導体間ピッチが小さい場合で
も、第１及び第２の導体のそれぞれにコイルを配置する
ことができ、また一方の導体が断線しても断線前と同じ
電流が第１及び第２のコイルで検出される電流検出装置
を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and even if the conductor pitch of the first and second conductors forming the multiple conductor is small, the first and second conductors An object is to obtain a current detection device in which a coil can be arranged in each of the second conductors, and the same current as before the disconnection is detected by the first and second coils even if one conductor is disconnected. To do.
【００１１】[0011]
【課題を解決するための手段】この発明に係る電流検出
装置は、複導体を構成する第１及び第２の導体の電流を
検出するものであって、第１及び第２の導体の長手方向
に互いに間隔をおいて第１及び第２の導体に取り付けら
れ、第１及び第２の導体間を短絡する第１及び第２の取
付板、第１の取付板に取り付けられ、第１の導体に流れ
る電流に応じた電圧信号を出力する第１のコイル、及び
第２の取付板に取り付けられ、かつ第１のコイルに対し
て第１及び第２の導体の長手方向へずらした位置に配置
され、第２の導体に流れる電流に応じた電圧信号を出力
する第２のコイルを備えたものである。SUMMARY OF THE INVENTION A current detecting device according to the present invention is for detecting the currents of a first conductor and a second conductor which compose a multi-conductor, and the first conductor and the second conductor are arranged in a longitudinal direction. First and second mounting plates that are mounted on the first and second conductors with a space between each other and short-circuit between the first and second conductors, and are mounted on the first mounting plate, and the first conductor Attached to a first coil and a second mounting plate that output a voltage signal according to a current flowing through the first coil, and the first coil and the second coil are arranged at positions displaced in the longitudinal direction of the first and second conductors. And a second coil for outputting a voltage signal according to the current flowing through the second conductor.
【００１２】また、第１及び第２のコイルに対して直列
に接続され、入力された光を第１及び第２のコイルの出
力電圧に応じて変調する光電圧センサ、及び光電圧セン
サから出力された光信号を電流信号に変換する演算処理
部をさらに備えている。Further, an optical voltage sensor which is connected in series to the first and second coils and modulates the inputted light in accordance with the output voltage of the first and second coils, and an output from the optical voltage sensor It further comprises an arithmetic processing unit for converting the converted optical signal into a current signal.
【００１３】さらに、演算処理部は、光ファイバを介し
て光電圧センサに接続され、低電圧部位に配置されてい
る。Further, the arithmetic processing section is connected to the optical voltage sensor via the optical fiber and is arranged at the low voltage portion.
【００１４】[0014]
【発明の実施の形態】以下、この発明の実施の形態を図
について説明する。図１はこの発明の実施の形態の一例
による電流検出装置（光変流器）を示す構成図である。
図において、複導体を構成する第１及び第２の導体（送
電線）１Ａ，１Ｂには、それぞれ電流Ｉが流れる。第１
及び第２の導体１Ａ，１Ｂは、互いに平行に配置されて
いる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a current detection device (optical current transformer) according to an example of an embodiment of the present invention.
In the figure, a current I flows through each of the first and second conductors (power transmission lines) 1A and 1B forming the multiple conductor. First
The second conductors 1A and 1B are arranged in parallel with each other.
【００１５】第１及び第２の導体１Ａ，１ｂには、それ
らの長手方向に互いに間隔をおいて第１及び第２の取付
板３ａ，３ｂが取り付けられている。第１及び第２の取
付板３ａ，３ｂは、例えば銅などの導電性の材料からな
り、第１及び第２の導体１Ａ，１Ｂ間を短絡する。First and second mounting plates 3a and 3b are attached to the first and second conductors 1A and 1b at intervals in the longitudinal direction thereof. The first and second mounting plates 3a and 3b are made of a conductive material such as copper, and short-circuit the first and second conductors 1A and 1B.
【００１６】第１の取付板３ａには、第１の導体１Ａに
流れる電流に応じた電圧信号を出力する第１のコイル
（空心ＣＴ）２ａが取り付けられている。第２の取付板
３ｂには、第２の導体１Ｂに流れる電流に応じた電圧信
号を出力する第２のコイル（空心ＣＴ）２ｂが取り付け
られている。第２のコイル２ｂは、第１のコイル２ａに
対して第１及び第２の導体１Ａ，１Ｂの長手方向（軸方
向）へずらした位置に配置されている。また、第１及び
第２のコイル２ａ，２ｂは、第１及び第２の取付板３
ａ，３ｂの間で第１及び第２の導体１Ａ，１Ｂを囲繞す
るように配置されている。A first coil (air core CT) 2a for outputting a voltage signal according to a current flowing through the first conductor 1A is attached to the first mounting plate 3a. A second coil (air core CT) 2b that outputs a voltage signal according to the current flowing through the second conductor 1B is attached to the second attachment plate 3b. The second coil 2b is arranged at a position displaced in the longitudinal direction (axial direction) of the first and second conductors 1A and 1B with respect to the first coil 2a. The first and second coils 2a and 2b are connected to the first and second mounting plates 3
It is arranged so as to surround the first and second conductors 1A and 1B between a and 3b.
【００１７】第１及び第２のコイル２ａ，２ｂには、電
圧印加線４を介して光電圧センサ６が直列に接続されて
いる。光電圧センサ６は、光センサ室５内に収容され、
入力された光を第１及び第２のコイル２ａ，２ｂの出力
電圧に応じて変調する。An optical voltage sensor 6 is connected in series to the first and second coils 2a and 2b via a voltage applying line 4. The optical voltage sensor 6 is housed in the optical sensor chamber 5,
The input light is modulated according to the output voltage of the first and second coils 2a and 2b.
【００１８】光電圧センサ６には、光ファイバ７ａ，７
ｂを介して演算処理部８が接続されている。演算処理部
８は、発光素子及び受光素子を有しており、光電圧セン
サ６に光を出力するとともに、光電圧センサ６から出力
された光信号を電流信号に変換する。また、光電圧セン
サ６は、低電圧部位に配置されている。言い換えると、
演算処理部８から出力された光信号は光ファイバ７ａに
より高電圧部位まで伝送され、光電圧センサ６で変調さ
れ出力された光信号は、光ファイバ７ｂにより、低電圧
部位まで伝送される。The optical voltage sensor 6 includes optical fibers 7a and 7a.
The arithmetic processing unit 8 is connected via b. The arithmetic processing unit 8 has a light emitting element and a light receiving element, outputs light to the optical voltage sensor 6, and converts the optical signal output from the optical voltage sensor 6 into a current signal. Further, the optical voltage sensor 6 is arranged in the low voltage region. In other words,
The optical signal output from the arithmetic processing unit 8 is transmitted to the high voltage portion by the optical fiber 7a, and the optical signal modulated and output by the optical voltage sensor 6 is transmitted to the low voltage portion by the optical fiber 7b.
【００１９】次に、動作について説明する。第１及び第
２の導体１Ａ，１Ｂが健全で、両導体１Ａ，１Ｂにそれ
ぞれ電流Ｉが流れている場合、第１及び第２のコイル２
ａ，２ｂは電流Ｉに比例した電圧をそれぞれ出力する。
光電圧センサ６では、第１及び第２のコイル２ａ，２ｂ
からの出力電圧に応じて直流光を変調する（ポッケルス
効果）。変調された光信号は、光ファイバ７ｂを介して
演算処理部８に伝送され、電流信号に変換される。そし
て、演算処理部８からの出力は、故障区間検出装置（図
示せず）に伝送され、故障区間検出のデータとして使用
される。Next, the operation will be described. When the first and second conductors 1A and 1B are sound and the current I is flowing through both conductors 1A and 1B, the first and second coils 2
Each of a and 2b outputs a voltage proportional to the current I.
In the optical voltage sensor 6, the first and second coils 2a and 2b
Modulates DC light according to the output voltage from (Pockels effect). The modulated optical signal is transmitted to the arithmetic processing unit 8 via the optical fiber 7b and converted into a current signal. Then, the output from the arithmetic processing unit 8 is transmitted to a failure section detection device (not shown) and is used as failure section detection data.
【００２０】このような電流検出装置では、第１及び第
２のコイル２ａ，２ｂが第１及び第２の導体１Ａ，１Ｂ
の長手方向にずらして配置されているため、導体間ピッ
チの小さい低電圧クラスの場合でも、第１及び第２のコ
イル２ａ，２ｂが互いに干渉することはなく、第１及び
第２の導体１Ａ，１Ｂのそれぞれにコイルを配置するこ
とができる。In such a current detecting device, the first and second coils 2a and 2b have the first and second conductors 1A and 1B.
The first and second coils 1a and 2b do not interfere with each other even in the low voltage class in which the pitch between the conductors is small, because the first and second conductors 1A are displaced from each other in the longitudinal direction. , 1B can be provided with a coil.
【００２１】また、図２は図１の第１の導体１Ａが断線
した場合の電流流路を示す説明図である。図２におい
て、×印部分で第１の導体１Ａが断線した場合、第１の
取付板３ａの上部では第２の導体１Ｂに２Ｉの電流が流
れ、断線した第１の導体１Ａでは電流が０となる。しか
し、第１及び第２の導体１Ａ，１Ｂは、第１の取付板３
ａで短絡されているため、前述の２Ｉのうち、Ｉが第１
の取付板３ａを介して第１の導体１Ａに流れる。FIG. 2 is an explanatory view showing a current flow path when the first conductor 1A of FIG. 1 is broken. In FIG. 2, when the first conductor 1A is broken at the portion marked with “X”, a current of 2I flows through the second conductor 1B above the first mounting plate 3a, and the current is 0 at the broken first conductor 1A. Becomes However, the first and second conductors 1A and 1B are connected to the first mounting plate 3
Since it is short-circuited at a, I is the first of the above 2I.
To the first conductor 1A through the mounting plate 3a.
【００２２】従って、第１及び第２のコイル２ａ，２ｂ
が配置されている部分の電流は、断線していない場合
（図１）と同様となり、電流検出の動作も図１と何ら変
わることはない。これは、第２の導体１Ｂ側が断線して
も同様である。Therefore, the first and second coils 2a, 2b
The current in the portion where is arranged is the same as in the case where there is no disconnection (FIG. 1), and the operation of current detection is no different from that in FIG. This is the same even if the second conductor 1B side is disconnected.
【００２３】さらに、この実施の形態では、低圧部位と
高圧部位との間が光ファイバ７ａ，７ｂで接続されてい
るため、演算処理部８は電磁ノイズの少ない低圧部位
（信号処理盤内）に設置することができ、電磁ノイズの
影響を大幅に改善することができる。Further, in this embodiment, since the low-voltage part and the high-voltage part are connected by the optical fibers 7a and 7b, the arithmetic processing section 8 is connected to the low-voltage part (in the signal processing board) where electromagnetic noise is small. It can be installed and the effect of electromagnetic noise can be greatly improved.
【００２４】[0024]
【発明の効果】以上説明したように、この発明の電流検
出装置は、第１及び第２のコイルが第１及び第２の導体
の長手方向にずらして配置されているため、導体間ピッ
チの小さい低電圧クラスの場合でも、第１及び第２のコ
イルが互いに干渉することはなく、第１及び第２の導体
のそれぞれにコイルを配置することができる。また、第
１及び第２の取付板により第１及び第２の導体が互いに
短絡されているため、一方の導体が断線しても断線前と
同じ電流が第１及び第２のコイルで検出される。As described above, in the current detecting device of the present invention, the first and second coils are arranged so as to be displaced in the longitudinal direction of the first and second conductors. Even in the small low voltage class, the first and second coils do not interfere with each other and the coils can be placed on each of the first and second conductors. Further, since the first and second mounting plates short-circuit the first and second conductors to each other, even if one of the conductors is disconnected, the same current as before the disconnection is detected by the first and second coils. It
【００２５】また、第１及び第２のコイルに対して直列
に接続され、入力された光を第１及び第２のコイルの出
力電圧に応じて変調する光電圧センサ、及び光電圧セン
サから出力された光信号を電流信号に変換する演算処理
部をさらに備えているので、簡単な構成で、第１及び第
２の導体の電流をより確実に検出することができる。The optical voltage sensor, which is connected in series to the first and second coils, modulates the input light according to the output voltage of the first and second coils, and outputs from the optical voltage sensor. Since the arithmetic processing unit for converting the converted optical signal into the current signal is further provided, the currents of the first and second conductors can be detected more reliably with a simple configuration.
【００２６】さらに、演算処理部は、光ファイバを介し
て光電圧センサに接続され、低電圧部位に配置されてい
るので、電磁ノイズの影響を大幅に改善することができ
る。Further, since the arithmetic processing unit is connected to the optical voltage sensor via the optical fiber and arranged at the low voltage portion, the influence of electromagnetic noise can be greatly improved.
【図１】 この発明の実施の形態の一例による電流検出
装置を示す構成図である。FIG. 1 is a configuration diagram showing a current detection device according to an example of an embodiment of the present invention.
【図２】 図１の第１の導体が断線した場合の電流流路
を示す説明図である。FIG. 2 is an explanatory diagram showing a current flow path when the first conductor of FIG. 1 is broken.
【図３】 従来の送電線監視センサの一例の断面図であ
る。FIG. 3 is a cross-sectional view of an example of a conventional power transmission line monitoring sensor.
１Ａ 第１の導体、１Ｂ 第２の導体、２ａ 第１のコ
イル、２ｂ 第２のコイル、３ａ 第１の取付板、３ｂ
第２の取付板、６ 光電圧センサ、７ａ，７ｂ 光フ
ァイバ、８ 演算処理部。1A 1st conductor, 1B 2nd conductor, 2a 1st coil, 2b 2nd coil, 3a 1st mounting plate, 3b
Second mounting plate, 6 optical voltage sensor, 7a, 7b optical fiber, 8 arithmetic processing unit.
フロントページの続き Ｆターム(参考） 2G025 AA05 AB11 AC06 2G033 AB02 AC01 AG13 2G035 AD19 AD36 AD37 5E081 AA01 CC12 Continued front page F-term (reference) 2G025 AA05 AB11 AC06 2G033 AB02 AC01 AG13 2G035 AD19 AD36 AD37 5E081 AA01 CC12
Claims (3)
電流を検出する電流検出装置であって、 上記第１及び第２の導体の長手方向に互いに間隔をおい
て上記第１及び第２の導体に取り付けられ、上記第１及
び第２の導体間を短絡する第１及び第２の取付板、 上記第１の取付板に取り付けられ、上記第１の導体に流
れる電流に応じた電圧信号を出力する第１のコイル、及
び上記第２の取付板に取り付けられ、かつ上記第１のコ
イルに対して上記第１及び第２の導体の長手方向へずら
した位置に配置され、上記第２の導体に流れる電流に応
じた電圧信号を出力する第２のコイルを備えていること
を特徴とする電流検出装置。1. A current detection device for detecting currents of first and second conductors forming a double conductor, wherein the first and second conductors are spaced apart from each other in a longitudinal direction of the first and second conductors. First and second mounting plates mounted on the second conductor and short-circuiting between the first and second conductors, mounted on the first mounting plate, and depending on a current flowing through the first conductor. A first coil that outputs a voltage signal, and a second mounting plate that is attached to the first coil, and is arranged at a position displaced in the longitudinal direction of the first and second conductors with respect to the first coil; A current detecting device, comprising: a second coil that outputs a voltage signal corresponding to a current flowing through the second conductor.
に接続され、入力された光を上記第１及び第２のコイル
の出力電圧に応じて変調する光電圧センサ、及び上記光
電圧センサから出力された光信号を電流信号に変換する
演算処理部をさらに備えていることを特徴とする請求項
１記載の電流検出装置。2. An optical voltage sensor, which is connected in series to the first and second coils and modulates the input light according to the output voltage of the first and second coils, and the optical voltage. The current detection device according to claim 1, further comprising an arithmetic processing unit that converts an optical signal output from the sensor into a current signal.
上記光電圧センサに接続され、低電圧部位に配置されて
いることを特徴とする請求項２記載の電流検出装置。3. The current detection device according to claim 2, wherein the arithmetic processing unit is connected to the optical voltage sensor via an optical fiber and is arranged at a low voltage portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001316787A JP2003121475A (en) | 2001-10-15 | 2001-10-15 | Electric current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001316787A JP2003121475A (en) | 2001-10-15 | 2001-10-15 | Electric current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003121475A true JP2003121475A (en) | 2003-04-23 |
Family
ID=19134742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001316787A Pending JP2003121475A (en) | 2001-10-15 | 2001-10-15 | Electric current detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003121475A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013007712A (en) * | 2011-06-27 | 2013-01-10 | Toshiba Corp | Radiation detector |
-
2001
- 2001-10-15 JP JP2001316787A patent/JP2003121475A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013007712A (en) * | 2011-06-27 | 2013-01-10 | Toshiba Corp | Radiation detector |
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