JP3100536B2 - High pressure switchgear device - Google Patents
High pressure switchgear deviceInfo
- Publication number
- JP3100536B2 JP3100536B2 JP07186634A JP18663495A JP3100536B2 JP 3100536 B2 JP3100536 B2 JP 3100536B2 JP 07186634 A JP07186634 A JP 07186634A JP 18663495 A JP18663495 A JP 18663495A JP 3100536 B2 JP3100536 B2 JP 3100536B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- transformer
- side conductor
- load
- directional
- 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 - Fee Related
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、高圧開閉器装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-voltage switchgear device.
【０００２】[0002]
【従来の技術】従来は、方向性ＳＯＧ制御装置１３に制
御電源を供給する変圧器１６を任意の二相の電源側導体
間に設けていた。具体例の一例を図２で説明する。図２
に示すように、高圧開閉器１の電源側導体２、３、４の
三相のうちの任意の２相３、４の線間に変圧器１６の一
次巻線２０、２１を接続し、この変圧器１６の二次巻線
２２、２３を方向性ＳＯＧ制御装置１３に接続すること
により、制御電源を供給している。負荷側導体１７、１
８、１９に検出部２４を設け、電源側導体２，３，４と
負荷側導体１７，１８，１９の間を開閉する開閉部１４
と操作部１５を設け、零相電圧、零相電流を検出したと
き、方向性ＳＯＧ制御装置１３で負荷側地絡事故を判定
し、トリップ指令を出す。このトリップ指令により高圧
開閉器１は開路し、地絡電流を遮断する。2. Description of the Related Art Conventionally, a transformer 16 for supplying control power to a directional SOG control device 13 is provided between arbitrary two-phase power supply side conductors. An example of a specific example will be described with reference to FIG. FIG.
As shown in the figure, the primary windings 20, 21 of the transformer 16 are connected between arbitrary two phases 3, 4 of the three phases of the power supply side conductors 2, 3, 4 of the high voltage switch 1, The control power is supplied by connecting the secondary windings 22 and 23 of the transformer 16 to the directional SOG control device 13. Load side conductor 17, 1
8, 19 are provided with detection units 24, and open / close units 14 for opening / closing between the power supply-side conductors 2, 3, 4 and the load-side conductors 17, 18, 19.
When the zero-sequence voltage and zero-sequence current are detected, the directional SOG controller 13 determines a load-side ground fault and issues a trip command. By this trip command, the high-voltage switch 1 is opened to cut off the ground fault current.
【０００３】[0003]
【発明が解決しようとする課題】従来の技術では、高圧
から低圧へ変圧器１６により、電圧を降圧するため、一
次側と二次側の電圧差が大きく、絶縁を保つためには変
圧器が大形化するという不都合がある。また、耐電圧試
験時に変圧器１６の線間には、高圧開閉器１の耐電圧試
験での電圧がそのまま加わり、過励磁となり過大な励磁
電流がコイルに流れ、焼損に至るので、これを防ぐため
耐電圧試験電圧を印加しても鉄心が飽和しないよう定常
の磁束を（定格電圧）／（耐電圧試験電圧）以下で作る
必要があり、大きな変圧器となる。そこで本発明は小形
で耐電圧試験ができる電源装置を内蔵した高圧開閉器装
置を提供することを目的とする。In the prior art, the voltage is reduced from the high voltage to the low voltage by the transformer 16, so that the voltage difference between the primary side and the secondary side is large. There is an inconvenience of increasing the size. In addition, during the withstand voltage test, the voltage in the withstand voltage test of the high-voltage switch 1 is applied as it is between the lines of the transformer 16, resulting in overexcitation and an excessive excitation current flowing through the coil, leading to burnout. Therefore, it is necessary to generate a steady magnetic flux at (rated voltage) / (withstand voltage test voltage) or less so that the iron core does not saturate even when the withstand voltage test voltage is applied, resulting in a large transformer. Accordingly, an object of the present invention is to provide a high-voltage switchgear having a compact power supply device capable of withstanding voltage test.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明は、高圧開閉器と、この高圧開閉器の負荷側回
路の事故検出をして、前記高圧開閉器をトリップさせる
方向性ＳＯＧ制御装置とを備え、前記高圧開閉器には、
三相の電源側導体および三相の負荷側導体間を開閉する
開閉部および操作部と、前記三相の電源側導体もしくは
負荷側導体のうち、任意の二相間に接続されて、前記方
向性ＳＯＧ制御装置に制御電源を供給する変圧器とを有
する高圧開閉器装置において、前記任意の二相の電源側
導体もしくは負荷側導体と前記変圧器との間に三つ以上
を直列に接続したコンデンサを設け、これらのコンデン
サのうち、両端に位置しない任意のコンデンサに、前記
変圧器の一次巻線を並列に接続し、かつその二次巻線を
前記方向性ＳＯＧ制御装置に接続したことを特徴とする
ものである。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a directional SOG which detects a fault in a high-voltage switch and a load-side circuit of the high-voltage switch and trips the high-voltage switch. And a high-pressure switch, comprising:
An opening / closing unit and an operation unit for opening and closing between the three-phase power-side conductor and the three-phase load-side conductor; and the directional control unit is connected between any two of the three-phase power-side conductor or the load-side conductor, A high-voltage switch device having a transformer for supplying control power to an SOG control device, wherein at least three capacitors are connected in series between the arbitrary two-phase power supply side conductor or load side conductor and the transformer. Wherein the primary winding of the transformer is connected in parallel to any of the capacitors not located at both ends, and the secondary winding is connected to the directional SOG control device. It is assumed that.
【０００５】[0005]
【作用】このようにコンデンサを介して変圧器を電源側
導体もしくは負荷側導体に接続すると、コンデンサ分圧
により変圧器の一次巻線電圧を下げ、さらにその電圧を
変圧器により降圧するため、変圧器の一次側と二次側の
電圧差が小さくなる。When the transformer is connected to the power supply side conductor or the load side conductor via the capacitor as described above, the primary winding voltage of the transformer is reduced by the voltage division of the capacitor, and the voltage is further reduced by the transformer. The voltage difference between the primary and secondary sides of the vessel becomes smaller.
【０００６】[0006]
【実施例】以下本発明の一実施例を図１に従い説明す
る。図１において、高圧開閉器１の電源側導体２、３、
４のうちの二相間の電源側導体３および４の線間にコン
デンサ５、６、７を直列に接続する。コンデンサ５と６
の間およびコンデンサ６と７の間に変圧器８の一次巻線
９および１０をそれぞれ接続する。変圧器８の二次巻線
１１および１２を方向性ＳＯＧ制御装置１３に接続す
る。負荷側導体１７、１８、１９に検出部２４を設け
る。電源側導体２，３，４と負荷側導体１７，１８，１
９の間を開閉部１４と操作部１５を設ける。高圧開閉器
１の電源側導体２、３、４に印加されている電圧はコン
デンサ５、６、７により分圧され、変圧器８の一次巻線
９、１０に印加される電圧は電源側導体３、４の線間の
電圧より低い電圧となる。変圧器８の一次巻線９、１０
間の電圧は変圧器８で変圧されて、方向性ＳＯＧ制御装
置１３へ電源を供給し、検出部２４が零相電圧、零相電
流を検出したときに、方向性ＳＯＧ制御装置１３が負荷
側地絡事故や短絡事故を判定しトリップ指令を出す。こ
のトリップ指令により、高圧開閉器１は開路し、地絡電
流を遮断する。上述では電源側導体２、３、４の三相の
うちの二相３、４の線間にコンデンサ５，６，７を直列
に接続するとして説明したが任意の他の二相間とするこ
とができる。また任意の二相のほかに、三相に接続し
て、三相変圧器に電源を供給することもできる。また、
コンデンサ５，６，７を負荷側導体１７，１８，１９に
接続することもできる。さらにコンデンサも三個以上直
列に接続することもできる。また、検出部２４を電源側
導体２，３，４に接続することもできる。このとき、例
えば同容量のコンデンサを三個用いるとすれば、それぞ
れのコンデンサ５，６，７は、１／３の電圧を分担する
ことになり、高圧開閉器１の耐電圧試験での電圧がその
まま変圧器８に加わらない。このため、変圧器８に流れ
る励磁電流は、直列接続されたコンデンサ５，６，７に
流れる充電電流以上は鉄心が飽和しても流れることはな
い。したがって、耐電圧試験で過励磁になっても、この
充電電流に耐える一次巻線の巻線太さにすれば良い。と
りわけ方向性ＳＯＧ制御装置での消費電力が小さいもの
に対しては大きな静電容量のコンデンサを必要としな
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. In FIG. 1, power-supply-side conductors 2, 3, and
The capacitors 5, 6, and 7 are connected in series between the lines of the power supply side conductors 3 and 4 between the two phases of the four. Capacitors 5 and 6
And between the capacitors 6 and 7, the primary windings 9 and 10 of the transformer 8, respectively. The secondary windings 11 and 12 of the transformer 8 are connected to a directional SOG controller 13. The detection unit 24 is provided on the load-side conductors 17, 18, and 19. Power supply side conductors 2, 3, 4 and load side conductors 17, 18, 1
An opening / closing section 14 and an operation section 15 are provided between the sections 9. The voltage applied to the power supply-side conductors 2, 3, 4 of the high-voltage switch 1 is divided by the capacitors 5, 6, 7 and the voltage applied to the primary windings 9, 10 of the transformer 8 is changed to the power-supply-side conductor. The voltage is lower than the voltage between lines 3 and 4. Primary windings 9, 10 of transformer 8
The voltage between them is transformed by the transformer 8 and supplies power to the directional SOG control device 13. When the detecting unit 24 detects the zero-phase voltage and the zero-phase current, the directional SOG control device 13 Judges a ground fault or short circuit and issues a trip command. In response to this trip command, the high-voltage switch 1 is opened to cut off the ground fault current. In the above description, the capacitors 5, 6, 7 are connected in series between the lines of the two phases 3, 4 of the three phases of the power supply side conductors 2, 3, 4. However, any other two phases may be connected. it can. In addition to an arbitrary two-phase, it can be connected to a three-phase to supply power to the three-phase transformer. Also,
The capacitors 5, 6, and 7 can be connected to the load-side conductors 17, 18, and 19. Further, three or more capacitors can be connected in series. Further, the detection unit 24 can be connected to the power supply-side conductors 2, 3, and 4. At this time, for example, if three capacitors having the same capacity are used, each of the capacitors 5, 6, and 7 shares one third of the voltage, and the voltage in the withstand voltage test of the high-voltage switch 1 is reduced. It does not join the transformer 8 as it is. Therefore, the exciting current flowing through the transformer 8 does not flow beyond the charging current flowing through the capacitors 5, 6, 7 connected in series even if the iron core is saturated. Therefore, even if overexcitation occurs in the withstand voltage test, the winding thickness of the primary winding that can withstand this charging current may be set. In particular, a capacitor having a large capacitance is not required for a device having low power consumption in the directional SOG control device.
【０００７】[0007]
【発明の効果】以上のように、本発明の高圧開閉器によ
れば、変圧器の一次電圧はコンデンサを設けることによ
り下げられ、変圧器の一次巻線に加わる異常電圧も抑制
され、急峻な異常電圧に対しては、コンデンサで急峻分
を吸収するサージ抑制効果があるため、変圧器の一次巻
線の太さを小さくすることができ、絶縁強度も小さくす
ることができるので小形になる。As described above, according to the high-voltage switch of the present invention, the primary voltage of the transformer is reduced by providing the capacitor, the abnormal voltage applied to the primary winding of the transformer is also suppressed, and the steepness is reduced. With respect to an abnormal voltage, the capacitor has a surge suppression effect of absorbing a steep component, so that the thickness of the primary winding of the transformer can be reduced, and the insulation strength can be reduced, so that the size is reduced.
【図１】本発明の実施例の結線図FIG. 1 is a connection diagram of an embodiment of the present invention.
【図２】従来例の結線図FIG. 2 is a connection diagram of a conventional example.
１ 高圧開閉器 ２，３，４ 電源側導体 ５ コンデンサ ６ コンデンサ ７ コンデンサ ８ 変圧器 ９，１０ 一次巻線 １１，１２ 二次巻線 １３ 方向性ＳＯＧ制御装置 １４ 開閉部 １５ 操作部 １７，１８，１９ 負荷側導体 ２４ 検出部 DESCRIPTION OF SYMBOLS 1 High voltage switch 2,3,4 Power supply side conductor 5 Capacitor 6 Capacitor 7 Capacitor 8 Transformer 9,10 Primary winding 11,12 Secondary winding 13 Directional SOG control device 14 Switching unit 15 Operation unit 17,18, 19 Load side conductor 24 Detector
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−142319（ＪＰ，Ａ) 特開 昭54−66441（ＪＰ，Ａ) 実公 昭50−46184（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 33/59 H02H 3/34 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-142319 (JP, A) JP-A-54-66441 (JP, A) Jiko 50-46184 (JP, Y1) (58) Field (Int.Cl. 7 , DB name) H01H 33/59 H02H 3/34
Claims (1)
回路の事故検出をして、前記高圧開閉器をトリップさせ
る方向性ＳＯＧ制御装置とを備え、前記高圧開閉器に
は、三相の電源側導体および三相の負荷側導体間を開閉
する開閉部および操作部と、前記三相の電源側導体もし
くは負荷側導体のうち、任意の二相間に接続されて、前
記方向性ＳＯＧ制御装置に制御電源を供給する変圧器と
を有する高圧開閉器装置において、前記任意の二相の電
源側導体もしくは負荷側導体と前記変圧器との間に三つ
以上を直列に接続したコンデンサを設け、これらのコン
デンサのうち、両端に位置しない任意のコンデンサに、
前記変圧器の一次巻線を並列に接続し、かつその二次巻
線を前記方向性ＳＯＧ制御装置に接続したことを特徴と
する高圧開閉器装置。1. A high-voltage switch, and a directional SOG control device that detects an accident in a load-side circuit of the high-voltage switch and trips the high-voltage switch. An opening / closing unit and an operating unit for opening and closing between the power supply side conductor and the three-phase load side conductor, and the directional SOG control connected between any two phases of the three phase power supply side conductor or the load side conductor. A high-voltage switch device having a transformer for supplying control power to the device, wherein a capacitor having three or more connected in series between the arbitrary two-phase power-side conductor or load-side conductor and the transformer is provided. , Of these capacitors, any capacitor not located at both ends,
A high-voltage switchgear, wherein a primary winding of the transformer is connected in parallel, and a secondary winding thereof is connected to the directional SOG controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07186634A JP3100536B2 (en) | 1995-06-30 | 1995-06-30 | High pressure switchgear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07186634A JP3100536B2 (en) | 1995-06-30 | 1995-06-30 | High pressure switchgear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0917295A JPH0917295A (en) | 1997-01-17 |
| JP3100536B2 true JP3100536B2 (en) | 2000-10-16 |
Family
ID=16192022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07186634A Expired - Fee Related JP3100536B2 (en) | 1995-06-30 | 1995-06-30 | High pressure switchgear device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3100536B2 (en) |
-
1995
- 1995-06-30 JP JP07186634A patent/JP3100536B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0917295A (en) | 1997-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |