JPH11285112A - Voltage/current sensor unit and switch gear - Google Patents
Voltage/current sensor unit and switch gearInfo
- Publication number
- JPH11285112A JPH11285112A JP8234598A JP8234598A JPH11285112A JP H11285112 A JPH11285112 A JP H11285112A JP 8234598 A JP8234598 A JP 8234598A JP 8234598 A JP8234598 A JP 8234598A JP H11285112 A JPH11285112 A JP H11285112A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- current sensor
- main circuit
- circuit conductor
- sensor unit
- 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 32
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract 2
- 238000009413 insulation Methods 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は受配電設備の主回路
の電圧及び電流の計測を行なう電圧センサと電流センサ
とが一体化された電圧・電流センサユニット及び該電圧
・電流センサユニットを備えたスイッチギヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a voltage / current sensor unit in which a voltage sensor and a current sensor for measuring the voltage and current of a main circuit of a power receiving and distributing facility are integrated, and the voltage / current sensor unit is provided. Related to switchgear.
【０００２】[0002]
【従来の技術】高電圧の受配電設備において用いられる
スイッチギヤでは、高電圧を計測できる電圧センサ、及
び電流センサが備えられている。図４は、特公平５−６
４３２５号公報に開示してあるスイッチギヤの主要部を
コンパートメント内に収納した状態を示す立断面図であ
る。閉鎖箱内にコンパートメント９が設けられており、
コンパートメント９の外にある母線（図示せず）及び送
電ケーブル（図示せず）とコンパートメント９内の機器
との接続ができるように外部接続端子１５がコンパート
メント９の壁に配置されている。コンパートメント９内
には高圧交流電磁接触器１６及び限流形電力ヒューズ１
７、電圧センサたる計器用変圧器１３及び電流センサた
る計器用変流器１４等が設置されている。計器用変圧器
１３及び計器用変流器１４中のアースされることにより
低電位となる部分と、母線及び送電ケーブルと接続され
ることで高電位となる部分との間、及び相異なる電位と
なる部分相互の間に気中で安全な絶縁距離をとって、計
器用変圧器１３及び計器用変流器１４は設置されてい
る。2. Description of the Related Art A switchgear used in a high-voltage power distribution system is provided with a voltage sensor capable of measuring a high voltage and a current sensor. Figure 4 shows the Japanese Patent Publication No. 5-6.
It is a sectional elevational view showing the state where the principal part of the switchgear indicated in 4325 gazette was stored in the compartment. Compartment 9 is provided in the closed box,
An external connection terminal 15 is arranged on a wall of the compartment 9 so that a bus (not shown) and a power transmission cable (not shown) outside the compartment 9 can be connected to devices in the compartment 9. In the compartment 9, a high voltage AC magnetic contactor 16 and a current limiting type power fuse 1
7. An instrument transformer 13 as a voltage sensor and an instrument current transformer 14 as a current sensor are installed. Between the portion of the instrument transformer 13 and the instrument current transformer 14 that becomes low potential by being grounded, and the portion that becomes high potential by being connected to the bus and the power transmission cable, and between different potentials. The instrument transformer 13 and the instrument current transformer 14 are installed with a safe insulation distance between the parts.
【０００３】[0003]
【発明が解決しようとする課題】以上の如き従来の電圧
センサ及び電流センサは、気中において、安全な絶縁距
離をとって設置しており、設置容積が大きく、スイッチ
ギヤの小型化に制約があったため、スイッチギヤでの電
圧センサ及び電流センサの設置容積を小さくすることが
課題となっていた。The above-mentioned conventional voltage sensors and current sensors are installed in the air at a safe insulation distance, have a large installation volume, and are limited in miniaturizing the switchgear. Therefore, it has been a problem to reduce the installation volume of the voltage sensor and the current sensor in the switchgear.
【０００４】本発明は斯かる事情に鑑みてなされたもの
であり、樹脂注型することによってスイッチギヤでの電
圧センサ及び電流センサの設置容積を小さくし、スイッ
チギヤの大幅な小型化を可能にする電圧・電流センサユ
ニット及び該電圧・電流センサユニットを備えたスイッ
チギヤを提供することを目的とする。[0004] The present invention has been made in view of the above-mentioned circumstances, and by casting resin, the installation volume of a voltage sensor and a current sensor in a switchgear can be reduced, and the size of the switchgear can be significantly reduced. It is an object of the present invention to provide a voltage / current sensor unit and a switchgear provided with the voltage / current sensor unit.
【０００５】[0005]
【課題を解決するための手段】第１発明に係る電圧・電
流センサユニットは、主回路導体と、該主回路導体に所
定距離隔てて配置された電流センサと、一つの接続端子
が前記主回路導体に接続されている電圧センサとを備
え、前記主回路導体、前記電流センサ及び前記電圧セン
サが絶縁性樹脂にて一体に埋込み注型されていることを
特徴とする。第２発明に係る電圧・電流センサユニット
は、電流センサは前記主回路導体を囲繞しているロゴス
キーコイルであることを特徴とする。第３発明に係る電
圧・電流センサユニットは、電圧センサは抵抗分圧器で
あることを特徴とする。第４発明に係るスイッチギヤ
は、２つの導体の間を接離する開閉器を備え、該開閉器
の一つの接続端子に請求項１記載の電圧・電流センサユ
ニットの主回路導体が接続されていることを特徴とす
る。According to a first aspect of the present invention, there is provided a voltage / current sensor unit comprising: a main circuit conductor; a current sensor arranged at a predetermined distance from the main circuit conductor; And a voltage sensor connected to a conductor, wherein the main circuit conductor, the current sensor, and the voltage sensor are integrally embedded and cast with an insulating resin. A voltage / current sensor unit according to a second invention is characterized in that the current sensor is a Rogowski coil surrounding the main circuit conductor. A voltage / current sensor unit according to a third invention is characterized in that the voltage sensor is a resistance voltage divider. A switchgear according to a fourth aspect of the present invention includes a switch for connecting and disconnecting between two conductors, and a main circuit conductor of the voltage / current sensor unit according to claim 1 is connected to one connection terminal of the switch. It is characterized by being.
【０００６】第１発明に係る電圧・電流センサユニット
によれば、電圧センサと電流センサとを絶縁性樹脂によ
って埋込み注型することで、気中に比べセンサ同士の絶
縁距離が短縮されるから、小型化が可能となる。第２発
明に係る電圧・電流センサユニットによれば、電流セン
サに磁性材料を使用しないロゴスキーコイルを用いるこ
とにより、一層の小型化が可能となる。第３発明に係る
電圧・電流センサユニットによれば、電圧センサに磁性
材料を使用しない抵抗分圧器を用いることにより、一層
の小型化が可能となる。第４発明に係るスイッチギヤに
よれば、請求項１記載の電圧・電流センサユニットを使
用することで、電圧センサ及び電流センサの設置空間を
小さくすることができるから、装置全体の小型化が可能
となる。According to the voltage / current sensor unit according to the first invention, the voltage sensor and the current sensor are embedded and cast with an insulating resin, so that the insulation distance between the sensors is shorter than in the air. The size can be reduced. According to the voltage / current sensor unit according to the second aspect of the present invention, the size of the current sensor can be further reduced by using a Rogowski coil that does not use a magnetic material. According to the voltage / current sensor unit according to the third aspect of the present invention, the use of a resistance voltage divider that does not use a magnetic material for the voltage sensor enables further downsizing. According to the switchgear according to the fourth aspect of the present invention, the use of the voltage / current sensor unit according to claim 1 makes it possible to reduce the installation space for the voltage sensor and the current sensor. Becomes
【０００７】[0007]
【発明の実施の形態】実施の形態１ 以下本発明をその実施の形態を示す図面に基づいて詳述
する。図１は本発明に係る電圧・電流センサユニットの
実施の形態１の要部の構成を示す模式的平面図であり、
図２は図１に示すII−II線による模式的断面図である。
図において５は適宜長さの円柱形の主回路導体である。
主回路導体５の上端から主回路導体の長さの約半分より
少し上の位置にロゴスキーコイル３が主回路導体５から
所要距離隔てて囲繞されている。ロゴスキーコイル３は
螺旋コイルを円環状にしたものである。ロゴスキーコイ
ル３から下方に所要距離を隔てて抵抗分圧器４が配置さ
れている。抵抗分圧器４は２つの直列に接続された抵抗
器Ｒ2 ，Ｒ3 からなっており、主回路導体５に対し所要
絶縁距離を隔てて平行に配置されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 The present invention will be described below in detail with reference to the drawings showing an embodiment. FIG. 1 is a schematic plan view showing a configuration of a main part of a voltage / current sensor unit according to Embodiment 1 of the present invention.
FIG. 2 is a schematic sectional view taken along line II-II shown in FIG.
In the figure, reference numeral 5 denotes a cylindrical main circuit conductor having an appropriate length.
The Rogowski coil 3 is surrounded by a required distance from the upper end of the main circuit conductor 5 at a position slightly more than half the length of the main circuit conductor 5 from the main circuit conductor 5. The Rogowski coil 3 is a spiral coil formed in an annular shape. A resistance voltage divider 4 is arranged below the Rogowski coil 3 at a required distance. The resistor voltage divider 4 comprises two series-connected resistors R 2 and R 3 , which are arranged in parallel with the main circuit conductor 5 with a required insulation distance.
【０００８】以上の如く配置された主回路導体５、ロゴ
スキーコイル３及び抵抗分圧器４は絶縁性樹脂２によっ
て一体に略円柱状に埋込み注型されている。主回路導体
５の下端は絶縁性樹脂２から外部に適宜長さ露出してお
り、これが送電ケーブルへの接続部６ａとなる。主回路
導体５の上端は絶縁性樹脂２に埋込まれている。主回路
導体５の上端付近から絶縁性樹脂２の側面に向けて開口
する接続用孔２ａが設けてある。該接続用孔２ａは内部
程細い円錐台形であり、この接続用孔２ａを用いて主回
路母線が接続用孔２ａに接続される。The main circuit conductor 5, the Rogowski coil 3 and the resistive voltage divider 4 arranged as described above are integrally cast into a substantially cylindrical shape by the insulating resin 2. The lower end of the main circuit conductor 5 is appropriately exposed to the outside from the insulating resin 2 and serves as a connection portion 6a to the power transmission cable. The upper end of the main circuit conductor 5 is embedded in the insulating resin 2. A connection hole 2 a that opens from near the upper end of the main circuit conductor 5 to the side surface of the insulating resin 2 is provided. The connection hole 2a has a shape of a truncated cone that is as thin as the inside, and the main circuit bus is connected to the connection hole 2a using the connection hole 2a.
【０００９】埋め込み注型により成形された電圧・電流
センサユニット１は軽量化のため、接続用孔２ａの反対
側の部分に段部を形成している。この段部の側面及び下
面は主回路導体５及びロゴスキーコイル３の被覆絶縁に
必要な絶縁性樹脂２を残した位置に定めている。[0009] The voltage / current sensor unit 1 formed by buried casting has a step portion at a portion opposite to the connection hole 2a for weight reduction. The side surface and the lower surface of this step portion are set at positions where the insulating resin 2 necessary for covering and insulating the main circuit conductor 5 and the Rogowski coil 3 is left.
【００１０】ロゴスキーコイル３は両端に接続端子
Ｐ1 ，Ｐ2 を有する。抵抗分圧器４は両端に接続端子Ｐ
3 ，Ｐ4 を、また２つの抵抗器Ｒ2 ，Ｒ3 間に測定端子
Ｐ5 を有する。接続端子Ｐ1 ，Ｐ2 、及び測定端子Ｐ5
は絶縁性樹脂２の側面から露出しており、また接続端子
Ｐ4 は絶縁性樹脂２の底面から露出している。２つの接
続端子Ｐ1 ，Ｐ2 は電流計３ｂ及び出力抵抗器Ｒ1 が並
列接続された電流値測定回路３ａに外部で接続されてい
る。接続端子Ｐ3 は内部で主回路導体５が接続されてお
り、接続端子Ｐ4 と測定端子Ｐ5 との間には電圧計４ａ
が外部で接続されている。The Rogowski coil 3 has connection terminals P 1 and P 2 at both ends. The resistance voltage divider 4 has connection terminals P at both ends.
3, the P 4, also between the two resistors R 2, R 3 having the measurement terminal P 5. Connection terminals P 1 , P 2 and measurement terminal P 5
Are exposed from the side surface of the insulating resin 2, and the connection terminal P 4 is exposed from the bottom surface of the insulating resin 2. Two connection terminals P 1, P 2 is externally connected to a current measuring circuit 3a ammeter 3b and the output resistor R 1 are connected in parallel. The connection terminal P 3 is connected to the main circuit conductor 5 inside, voltmeter 4a between the connection terminal P 4 and the measurement terminal P 5
Is connected externally.
【００１１】このような本発明の電圧・電流センサユニ
ット１は絶縁性樹脂２で埋込み注型されているため、ロ
ゴスキーコイル３と抵抗分圧器４との距離を気中に比べ
大幅に短縮しつつ、高電圧用の電圧センサ及び電流セン
サの機能を果たすことができる。なお、この実施の形態
では電流センサは空心のロゴスキーコイルを用いている
が、有鉄心の変成器又はホール素子を用いて磁気を検出
することで電流を求める電流センサを利用してもよい。
なお、この実施の形態では電圧センサとして抵抗分圧器
を用いているが、計器用変圧器を用いてもよい。Since such a voltage / current sensor unit 1 of the present invention is embedded and cast with an insulating resin 2, the distance between the Rogowski coil 3 and the resistive voltage divider 4 is greatly reduced as compared with the air. At the same time, it can fulfill the functions of a voltage sensor and a current sensor for high voltage. In this embodiment, an air-core Rogowski coil is used as the current sensor. However, a current sensor that obtains a current by detecting magnetism using a transformer or a Hall element with an iron core may be used.
In this embodiment, a resistance voltage divider is used as a voltage sensor, but a voltage transformer for an instrument may be used.
【００１２】実施の形態２ 図３は本発明に係るスイッチギヤの実施の形態２の要部
の構成を示す立断面図である。図において８は閉鎖型配
電盤を示し、その扉８０, ８０を開放した状態を示して
いる。スイッチギヤ７は、主回路母線１０と送電ケーブ
ル１２との間を接離する開閉器１１を備えている。開閉
器１１は閉鎖されたコンパートメント９内に収納されて
おり、開閉器１１の一方の端子はコンパートメント９の
壁面に設けられた接続端子１５ａによって主回路母線１
０に接続され、他方の端子は同じく接続端子１５ｂ及び
前記電圧・電流センサユニット１を介して送電ケーブル
１２に接続されている。電圧・電流センサユニット１は
コンパートメント９の外に配置されており、側面に設け
られた接続用孔２ａから主回路母線１０側に接続され、
底面から露出した接続部６ａが送電ケーブル１２側に接
続されている。このようなスイッチギヤでは本発明の電
圧・電流センサユニットが従来の電圧センサ、電流セン
サの設置容積に比して小さいので装置全体として小型化
される。Embodiment 2 FIG. 3 is an elevational sectional view showing a configuration of a main part of Embodiment 2 of a switchgear according to the present invention. In the figure, reference numeral 8 denotes a closed switchboard, in which the doors 80 are opened. The switchgear 7 includes a switch 11 for connecting and disconnecting between the main circuit bus 10 and the power transmission cable 12. The switch 11 is housed in the closed compartment 9, and one terminal of the switch 11 is connected to a main circuit bus 1 by a connection terminal 15 a provided on a wall surface of the compartment 9.
0, and the other terminal is also connected to the power transmission cable 12 via the connection terminal 15b and the voltage / current sensor unit 1. The voltage / current sensor unit 1 is arranged outside the compartment 9 and is connected to the main circuit bus 10 side from the connection hole 2a provided on the side surface,
The connecting portion 6a exposed from the bottom surface is connected to the power transmission cable 12 side. In such a switchgear, since the voltage / current sensor unit of the present invention is smaller than the installation volume of the conventional voltage sensor and current sensor, the size of the entire device is reduced.
【００１３】[0013]
【発明の効果】以上詳述した如く第１発明に係る電圧・
電流センサユニットによれば、主回路導体と電圧センサ
と電流センサとを絶縁樹脂を用いて一体で注型するた
め、電圧センサと電流センサとの間におかなければなら
ない絶縁距離を気中に比べ大幅に削減することができる
から、小型化が可能となる。As described in detail above, the voltage / voltage
According to the current sensor unit, since the main circuit conductor, the voltage sensor, and the current sensor are cast integrally using an insulating resin, the insulation distance that must be provided between the voltage sensor and the current sensor is smaller than in the air. The size can be greatly reduced, so that the size can be reduced.
【００１４】第２，３発明に係る電圧・電流センサユニ
ットによれば、磁性材料を必要としないので一層の小型
化が可能となる。According to the voltage / current sensor units according to the second and third aspects of the present invention, no magnetic material is required, so that the size can be further reduced.
【００１５】第４発明に係るスイッチギヤによれば、第
１発明に係る電圧・電流センサユニットを利用するた
め、その設置空間を大幅に削減できるから、スイッチギ
ヤの大幅な小型化が可能となる。また、電圧センサ及び
電流センサが一体化してあるから、スイッチギヤの組み
立て工程の作業性が向上する等本発明は優れた効果を奏
する。According to the switchgear according to the fourth aspect of the present invention, since the voltage / current sensor unit according to the first aspect of the present invention is used, the installation space thereof can be greatly reduced. Therefore, the size of the switchgear can be greatly reduced. . In addition, since the voltage sensor and the current sensor are integrated, the present invention has excellent effects such as improvement in workability in the process of assembling the switchgear.
【図１】 本発明に係る電圧・電流センサユニットの要
部の構成を示す模式的平面図である。FIG. 1 is a schematic plan view showing a configuration of a main part of a voltage / current sensor unit according to the present invention.
【図２】 図１のII−II線による模式的断面図である。FIG. 2 is a schematic sectional view taken along line II-II of FIG.
【図３】 本発明に係るスイッチギヤの模式的立断面図
である。FIG. 3 is a schematic vertical sectional view of a switchgear according to the present invention.
【図４】 従来のスイッチギヤの模式的立断面図であ
る。FIG. 4 is a schematic vertical sectional view of a conventional switchgear.
１ 電圧・電流センサユニット、２ 絶縁性樹脂、３
ロゴスキーコイル、４ 抵抗分圧器、５ 主回路導体、
７ スイッチギヤ。1 voltage / current sensor unit, 2 insulating resin, 3
Rogowski coil, 4 resistor divider, 5 main circuit conductors,
7 Switchgear.
Claims (4)
隔てて配置された電流センサと、一つの接続端子が前記
主回路導体に接続されている電圧センサとを備え、前記
主回路導体、前記電流センサ及び前記電圧センサが絶縁
性樹脂にて一体に埋込み注型されていることを特徴とす
る電圧・電流センサユニット。1. A main circuit conductor comprising: a main circuit conductor; a current sensor arranged at a predetermined distance from the main circuit conductor; and a voltage sensor having one connection terminal connected to the main circuit conductor. A voltage / current sensor unit, wherein the current sensor and the voltage sensor are integrally embedded and cast with an insulating resin.
いるロゴスキーコイルであることを特徴とする請求項１
記載の電圧・電流センサユニット。2. The current sensor according to claim 1, wherein said current sensor is a Rogowski coil surrounding said main circuit conductor.
The described voltage / current sensor unit.
徴とする請求項１記載の電圧・電流センサユニット。3. The voltage / current sensor unit according to claim 1, wherein the voltage sensor is a resistance voltage divider.
え、該開閉器の一つの接続端子に請求項１記載の電圧・
電流センサユニットの主回路導体が接続されていること
を特徴とするスイッチギヤ。4. A switch according to claim 1, further comprising a switch for connecting and disconnecting between the two conductors, wherein one of the connection terminals of the switch is connected to the switch.
A switchgear to which a main circuit conductor of a current sensor unit is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8234598A JPH11285112A (en) | 1998-03-30 | 1998-03-30 | Voltage/current sensor unit and switch gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8234598A JPH11285112A (en) | 1998-03-30 | 1998-03-30 | Voltage/current sensor unit and switch gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11285112A true JPH11285112A (en) | 1999-10-15 |
Family
ID=13771990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8234598A Pending JPH11285112A (en) | 1998-03-30 | 1998-03-30 | Voltage/current sensor unit and switch gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11285112A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20112356U1 (en) | 2001-07-17 | 2001-10-18 | Siemens AG, 80333 München | Feed-through converter for an electrical switchgear |
| JP2003522390A (en) * | 2000-02-01 | 2003-07-22 | シーメンス アクチエンゲゼルシヤフト | Multi-pole low-voltage circuit breaker with per-pole current detection device |
| EP3907839A1 (en) * | 2020-05-06 | 2021-11-10 | Siemens Aktiengesellschaft | A bushing for an air-insulated switchgear |
-
1998
- 1998-03-30 JP JP8234598A patent/JPH11285112A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003522390A (en) * | 2000-02-01 | 2003-07-22 | シーメンス アクチエンゲゼルシヤフト | Multi-pole low-voltage circuit breaker with per-pole current detection device |
| DE20112356U1 (en) | 2001-07-17 | 2001-10-18 | Siemens AG, 80333 München | Feed-through converter for an electrical switchgear |
| US6987438B2 (en) | 2001-07-17 | 2006-01-17 | Siemens Aktiengesellschaft | Bushing-type transformer for a switch gear unit |
| EP3907839A1 (en) * | 2020-05-06 | 2021-11-10 | Siemens Aktiengesellschaft | A bushing for an air-insulated switchgear |
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