JPH1195846A - Voltage regulator - Google Patents
Voltage regulatorInfo
- Publication number
- JPH1195846A JPH1195846A JP32024597A JP32024597A JPH1195846A JP H1195846 A JPH1195846 A JP H1195846A JP 32024597 A JP32024597 A JP 32024597A JP 32024597 A JP32024597 A JP 32024597A JP H1195846 A JPH1195846 A JP H1195846A
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- Prior art keywords
- voltage
- switch
- transformer
- power supply
- switches
- Prior art date
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- Ac-Ac Conversion (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は配電線や負荷の電源
線に設けられる電圧調整装置の改良に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a voltage regulator provided on a power line of a distribution line or a load.
【０００２】[0002]
【従来の技術】一般に、配電線などの電源線は、送電中
の電圧降下やコンデンサを設けた負荷の変動による電圧
上昇などの電圧変動に対応するために電源線の途中に電
圧調整装置が設けられている。2. Description of the Related Art In general, a power supply line such as a distribution line is provided with a voltage regulator in the middle of the power supply line in order to cope with a voltage change such as a voltage drop during power transmission or a voltage change due to a load change with a capacitor. Have been.
【０００３】従来の電圧調整装置（１相分）は、図５に
示すように電源線１、２の間に設けられている。電圧調
整装置３の構成は電源線１に直列的に直列変圧器４が接
続され、また電源線１、２間に並列的に励磁変圧器５が
接続されている。励磁変圧器５の二次巻線５ｂはタップ
Ａ、Ｂ、Ｃが設けられ、この端子と前記直列変圧器４の
二次巻線４ｂとは、それぞれ交流スイッチ１１、１２、
１３、１４、１５、１６を介して接続され、これらの交
流スイッチ１１〜１６は、逆並列接続された逆阻止３端
子型サイリスタが用いられている。A conventional voltage regulator (for one phase) is provided between power supply lines 1 and 2 as shown in FIG. The voltage regulator 3 has a configuration in which a series transformer 4 is connected in series to a power supply line 1, and an excitation transformer 5 is connected in parallel between the power supply lines 1 and 2. The secondary winding 5b of the exciting transformer 5 is provided with taps A, B, and C. This terminal and the secondary winding 4b of the series transformer 4 are connected to AC switches 11, 12,
The AC switches 11 to 16 are connected through anti-parallel three-terminal thyristors connected in anti-parallel.
【０００４】またこれら交流スイッチ１１〜１６と並列
に、抵抗器７と交流スイッチ１７とで構成されたバイパ
ス回路６が接続されている。８は直列変圧器４の二次巻
線４ｂに直列に接続された限流リアクトルである。また
９は検出用変圧器で、これは制御装置１０に接続されて
いる。この制御装置１０は、前記検出用変圧器９に接続
された電圧検出部２０、基準電圧部２１、これらに接続
された電圧比較器２２、およびタップ選択器２３とから
構成されている。[0004] A bypass circuit 6 composed of a resistor 7 and an AC switch 17 is connected in parallel with the AC switches 11 to 16. Reference numeral 8 denotes a current limiting reactor connected in series to the secondary winding 4b of the series transformer 4. Reference numeral 9 denotes a detection transformer, which is connected to the control device 10. The control device 10 includes a voltage detector 20, a reference voltage unit 21, a voltage comparator 22, and a tap selector 23 connected to the transformer 9 for detection.
【０００５】この電圧調整装置３において、電源線１の
入り側電圧を６．６ｋＶ、直列変圧器４の一次側を３０
０Ｖ、二次側を３００Ｖ、励磁変圧器５の二次巻線５ｂ
のタップＡＢ間電圧を１００Ｖ、タップＢＣ間電圧を２
００Ｖとする。この状態で電圧を上げる場合には、交流
スイッチ１１、１６をオンして、他の交流スイッチ１２
〜１５をオフにするとタップＡＣ間電圧は３００Ｖとな
り、直列変圧器４の二次巻線４ｂには、励磁変圧器５の
二次巻線５ｂの電圧３００Ｖが入り、これが加算されて
電源線１の出側電圧は６．９ｋＶとなる。In the voltage regulator 3, the input voltage of the power supply line 1 is 6.6 kV, and the primary side of the series transformer 4 is 30 kV.
0V, the secondary side is 300V, the secondary winding 5b of the exciting transformer 5
The voltage between taps AB is 100 V and the voltage between taps BC is 2
00V. To increase the voltage in this state, the AC switches 11 and 16 are turned on and the other AC switches 12
15 is turned off, the voltage between tap AC becomes 300 V, and the secondary winding 4 b of the series transformer 4 receives the voltage of 300 V of the secondary winding 5 b of the exciting transformer 5, which is added to the power supply line 1. Is 6.9 kV.
【０００６】次に出側電圧を６．７ｋＶに下げる場合に
は、交流スイッチ１１、１５をオンし、他の交流スイッ
チ１２〜１４、１６をオフにするとタップＡＢ間電圧は
１００Ｖで、直列変圧器４の二次巻線４ｂには、励磁変
圧器５の二次巻線５ｂの電圧１００Ｖが加算されて電源
線１の出側電圧は６．７ｋＶに下がる。Next, when the output voltage is reduced to 6.7 kV, the AC switches 11 and 15 are turned on, and the other AC switches 12 to 14 and 16 are turned off. The voltage of 100 V of the secondary winding 5 b of the exciting transformer 5 is added to the secondary winding 4 b of the transformer 4, and the output voltage of the power supply line 1 drops to 6.7 kV.
【０００７】従来の電圧調整装置は、交流スイッチ１１
〜１６の半導体デバイスとして逆阻止三端子型サイリス
タを使用しているので、サイリスの特性としてターンオ
フ（オンからオフへの切換え）にはサイリスタを流れる
電流が０になってからしばらくして逆電圧を印加するこ
とが必要である。これはもし交流スイッチ１５と交流ス
イッチ１６が同時にオンすると、タップＢＣ間が短絡さ
れてサイリスタが破損するおそれがあるからである。こ
れを防止するためにタップ切換時の交流スイッチの切換
えは、一旦、交流スイッチに流れている電流をバイパス
回路６に移して交流スイッチがオフするのに十分な時間
を経てから次に選択された交流スイッチに電流を流すよ
うにしている。[0007] A conventional voltage adjusting device includes an AC switch 11.
Since a reverse blocking three-terminal thyristor is used as the semiconductor device of Nos. 1 to 16, a characteristic of the thyristor is that when a current flowing through the thyristor becomes zero for a while after turning off (switching from on to off), a reverse voltage is applied. It is necessary to apply. This is because if the AC switch 15 and the AC switch 16 are turned on at the same time, the tap BC may be short-circuited and the thyristor may be damaged. In order to prevent this, the switching of the AC switch at the time of tap change is selected next after a sufficient time has passed to temporarily transfer the current flowing in the AC switch to the bypass circuit 6 and turn off the AC switch. The current flows through the AC switch.
【０００８】つまりこの切換方法は、交流スイッチ１１
と交流スイッチ１６がオンしている状態で、バイパス回
路６の交流スイッチ１７のゲートに制御装置１０から制
御信号を与えてオンさせてから、やや遅れて交流スイッ
チ１１と交流スイッチ１６のゲート信号を停止する。一
方、交流スイッチ１１と交流スイッチ１６がオンして直
列変圧器４と励磁変圧器５が接続されている状態で、直
列変圧器４の一次巻線４ａ側に負荷電流ＩＬが流れる
と、巻数比が１：１とするとその二次巻線４ｂ側に一次
電流による磁束を打ち消す向きに電流ＩＬが流れる。従
ってこの電流ＩＬは励磁変圧器５の二次巻線５ｂ、交流
スイッチ１１、１６にも流れる。That is, this switching method uses the AC switch 11
With the AC switch 16 turned on, the control signal is supplied from the control device 10 to the gate of the AC switch 17 of the bypass circuit 6 to turn it on. Then, the gate signals of the AC switch 11 and the AC switch 16 are slightly delayed. Stop. On the other hand, when the load current IL flows on the primary winding 4a side of the series transformer 4 in a state where the AC switch 11 and the AC switch 16 are turned on and the series transformer 4 and the exciting transformer 5 are connected, the turns ratio is changed. Is 1: 1, a current IL flows to the secondary winding 4b side in such a direction as to cancel the magnetic flux due to the primary current. Therefore, this current IL also flows through the secondary winding 5b of the exciting transformer 5 and the AC switches 11 and 16.
【０００９】交流スイッチ１１、１６が導通している状
態では、直列変圧器４の二次巻線４ｂには３００Ｖが印
加されているので、バイパス回路６の交流スイッチ１７
がオンすると抵抗器７にも３００Ｖが印加される。この
結果、抵抗器７にはＩｒ＝３００／Ｒ（但しＲは抵抗器
７の抵抗値）の電流が流れる。通常ＩｒはＩＬより低く
Ｉｒ−ＩＬの電流が励磁変圧器５から抵抗器７に流れ
る。交流スイッチ１１、１６のゲート信号はバイパス回
路６が導通すると０になるので、Ｉｒ−ＩＬが０を経て
極性が反転すると交流スイッチ１１、１６を流れる電流
は０となり、ＩＬはバイパス回路６を流れる。When the AC switches 11 and 16 are conducting, 300 V is applied to the secondary winding 4 b of the series transformer 4.
Is turned on, 300 V is also applied to the resistor 7. As a result, a current of Ir = 300 / R (where R is the resistance value of the resistor 7) flows through the resistor 7. Normally, Ir is lower than IL, and a current of Ir-IL flows from the exciting transformer 5 to the resistor 7. Since the gate signals of the AC switches 11 and 16 become 0 when the bypass circuit 6 is turned on, the current flowing through the AC switches 11 and 16 becomes 0 when Ir-IL passes through 0 and the polarity is inverted, and IL flows through the bypass circuit 6. .
【００１０】交流スイッチ１１、１６のサイリスタを流
れる電流が確実に遮断される時間が経過し後、次に選択
する交流スイッチ１１、１５にゲート信号を与えて導通
させてから、バイパス回路６の交流スイッチ１７のゲー
ト信号を止める。この交流スイッチ１７の電流はゲート
信号を止めてから半サイクル後には電流が０となり、そ
れ以降は流れなくなりバイパス回路６が遮断され、負荷
電流ＩＬは、交流スイッチ１１、１５を経て励磁変圧器
５に流れる。交流スイッチ１１、１５が導通することに
より直列変圧器４の二次巻線４ｂには１００Ｖが印加さ
れて電源線１の出側電圧は６．７ｋＶに下がる。なお限
流リアクトル８はタップ切換えの際に生じる過電流を抑
えるのが主な作用である。After a lapse of time during which the current flowing through the thyristors of the AC switches 11 and 16 is reliably shut off, a gate signal is applied to the AC switches 11 and 15 to be selected next, and the AC switches 11 and 15 are turned on. The gate signal of the switch 17 is stopped. The current of the AC switch 17 becomes 0 half a cycle after the stop of the gate signal, the current stops flowing after that, the bypass circuit 6 is cut off, and the load current IL passes through the AC switches 11 and 15 to the exciting transformer 5. Flows to When the AC switches 11 and 15 conduct, 100V is applied to the secondary winding 4b of the series transformer 4, and the output voltage of the power supply line 1 drops to 6.7 kV. The main function of the current limiting reactor 8 is to suppress an overcurrent generated at the time of tap switching.
【００１１】このように、タップ切換えを行なう場合に
は、サイリスタで形成された交流スイッチ１１〜１６を
流れる電流を一旦、バイパス回路６に流して交流スイッ
チ１１〜１６を流れる電流を０にしてから切換える必要
があった。As described above, when tap switching is performed, the current flowing through the AC switches 11 to 16 formed of thyristors is once passed through the bypass circuit 6 to reduce the current flowing through the AC switches 11 to 16 to zero. I had to switch.
【００１２】従って従来の電圧調整装置では、バイパス
回路６の導通時間が３サイクル程度必要となるためこの
間は電圧調整が行なえない。また頻繁にバイパス回路６
を導通すると、電圧調整が不能な時間が増加すると共
に、バイパス回路６に設けた抵抗器７の温度上昇を招く
問題がある。この切換回数は１秒間に２回程度が限度で
あり、またタップ切換えは１ステップごとに行なうため
大きな電圧変動に対しては電圧調整までに数秒かかるこ
とがあった。Therefore, in the conventional voltage adjusting device, the conduction time of the bypass circuit 6 needs about three cycles, so that the voltage cannot be adjusted during this time. Frequently bypass circuit 6
, The time during which voltage adjustment is not possible increases, and the temperature of the resistor 7 provided in the bypass circuit 6 rises. The number of times of switching is limited to about twice per second, and since tap switching is performed for each step, it may take several seconds for a large voltage change to adjust the voltage.
【００１３】[0013]
【発明が解決しようとする課題】本発明は上記欠点を除
去し、バイパス回路を省いて直ちに必要なタップに切換
えることができ、大きな電圧変動に対しても短時間で電
圧調整を行なうことができる電圧調整装置を提供するも
のである。SUMMARY OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, allows the required tap to be switched immediately without the bypass circuit, and allows the voltage to be adjusted in a short time even with a large voltage fluctuation. A voltage regulator is provided.
【００１４】[0014]
【課題を解決するための手段】本発明の請求項１記載の
電圧調整装置は、電源線に直列的に接続された直列変圧
器の二次巻線と、電源線間に並列的に接続された励磁変
圧器のタップ付き二次巻線とを、半導体デバイスで形成
された交流スイッチを介してタップ切換えするように接
続した電圧調整装置において、前記半導体デバイスとし
て自己消弧型デバイスを用いたことを特徴とするもので
ある。According to a first aspect of the present invention, there is provided a voltage regulator connected in parallel between a power supply line and a secondary winding of a series transformer connected in series to a power supply line. A self-extinguishing type device is used as the semiconductor device in a voltage adjusting device in which the tapping secondary winding of the exciting transformer and the tap are switched via an AC switch formed of a semiconductor device. It is characterized by the following.
【００１５】また請求項２記載の電圧調整装置は、自己
消弧型デバイスとしてＩＧＢＴを用いたことを特徴とす
るものである。また請求項３記載の電圧調整装置は、自
己消弧型デバイスとしてＧＴＯを用いたことを特徴とす
るものである。更に請求項４記載の電圧調整装置は、正
弦波の電圧波形のピークを検出して切換信号を出力する
切換タイミング設定器を、交流スイッチに接続したこと
を特徴とするものである。According to a second aspect of the present invention, the IGBT is used as a self-extinguishing device. According to a third aspect of the present invention, there is provided a voltage adjusting apparatus using GTO as a self-extinguishing type device. Further, a voltage adjusting device according to a fourth aspect is characterized in that a switching timing setter that detects a peak of a sine wave voltage waveform and outputs a switching signal is connected to an AC switch.
【００１６】[0016]
【発明の実施の形態】以下本発明の実施の一形態を図１
および図２を参照して詳細に説明する。図１に示すよう
に電圧調整装置（１相分）は、電源線１、２の間に設け
られている。この電圧調整装置３の構成は電源線１に直
列的に直列変圧器４が接続され、また電源線１、２間に
並列的に励磁変圧器５が接続されている。励磁変圧器５
の二次巻線５ｂはタップＡ、Ｂ、Ｃが設けられ、この端
子と前記直列変圧器４の二次巻線４ｂとは、交流スイッ
チ３０〜３５を介してタップ切換えできるように接続さ
れている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. As shown in FIG. 1, the voltage regulator (for one phase) is provided between the power supply lines 1 and 2. In the configuration of the voltage regulator 3, a series transformer 4 is connected in series to a power supply line 1, and an excitation transformer 5 is connected in parallel between the power supply lines 1 and 2. Exciting transformer 5
The secondary winding 5b is provided with taps A, B, and C, and this terminal and the secondary winding 4b of the series transformer 4 are connected via AC switches 30 to 35 so that tap switching is possible. I have.
【００１７】この交流スイッチ３０〜３５は図２に示す
ように、半導体デバイスの制御端子に加える信号によっ
て電流を制御する自己消弧型デバイスの一種であるＩＧ
ＢＴ（絶縁ゲートバイポーラトランジスタ）３６が、４
個のダイオード３７〜４０をブリッジに接続した中間に
接続された構造になっている。これはＤからＥに電流が
流れる時はダイオード３７、ＩＧＢＴ３６、ダイオード
４０を通り、またＥからＤに流れる時には、ダイオード
３９、ＩＧＢＴ３６、ダイオード３８を通る。なお図
中、ゲート回路とスナバは省略してある。These AC switches 30 to 35 are, as shown in FIG. 2, an IG which is a type of a self-extinguishing type device which controls a current by a signal applied to a control terminal of a semiconductor device.
BT (insulated gate bipolar transistor) 36 is 4
It has a structure in which the diodes 37 to 40 are connected in the middle where they are connected to a bridge. When the current flows from D to E, the current passes through the diode 37, the IGBT 36, and the diode 40, and when the current flows from E to D, the current passes through the diode 39, the IGBT 36, and the diode 38. In the figure, the gate circuit and the snubber are omitted.
【００１８】また図１に示すように、直列変圧器４の二
次巻線４ｂに直列に限流リアクトル８が接続されている
と共に、電源線１、２に検出用変圧器９が並列に接続さ
れている。この検出用変圧器９は制御装置１０に接続さ
れ、この制御装置１０は、電圧検出部２０と、基準電圧
部２１、これらに接続された電圧比較器２２、タップ選
択器２３、および前記電圧検出部２０に接続されて、電
圧波形のピークを検出して切換信号を、選択された交流
スイッチ３０〜３５のＩＧＢＴ３６に出力する切換タイ
ミング設定器４１とから構成されている。As shown in FIG. 1, a current limiting reactor 8 is connected in series to a secondary winding 4b of the series transformer 4, and a detecting transformer 9 is connected in parallel to the power lines 1 and 2. Have been. The detection transformer 9 is connected to a control device 10. The control device 10 includes a voltage detection unit 20, a reference voltage unit 21, a voltage comparator 22, a tap selector 23 connected thereto, and the voltage detection unit. The switching timing setter 41 is connected to the section 20 and detects a peak of the voltage waveform and outputs a switching signal to the IGBT 36 of the selected one of the AC switches 30 to 35.
【００１９】上記電圧調整装置３の動作を説明する。電
源線１の入り側電圧を６．６ｋＶ、直列変圧器４の一次
側を３００Ｖ、二次側を３００Ｖ、励磁変圧器５の二次
巻線５ｂのタップＡＢ間電圧を１００Ｖ、タップＢＣ間
電圧を２００Ｖとする。この状態で電圧を上げる場合に
は、交流スイッチ３０、３５をオンして、他の交流スイ
ッチ３１〜３４をオフした状態で、タップＡＣ間電圧は
３００Ｖとなり、直列変圧器４の二次巻線４ｂも前述の
ように３００Ｖが印加され、これが加算されて電源線１
の出側電圧は６．９ｋＶになる。The operation of the voltage regulator 3 will be described. The input side voltage of the power supply line 1 is 6.6 kV, the primary side of the series transformer 4 is 300 V, the secondary side is 300 V, the voltage between the taps AB of the secondary winding 5 b of the exciting transformer 5 is 100 V, and the voltage between the taps BC. Is set to 200V. When increasing the voltage in this state, the AC voltage between the taps is 300 V with the AC switches 30 and 35 turned on and the other AC switches 31 to 34 turned off, and the secondary winding of the series transformer 4 is turned on. 4b is also applied with 300 V as described above, and this is added to the power supply line 1b.
Is 6.9 kV.
【００２０】また電源線１、２に接続された検出用変圧
器９の二次側が、制御装置１０の電圧検出部２０に接続
されているので、ここで電圧と電圧波形を検出する。次
にこの検出電圧と基準電圧部２１からの基準電圧とを電
圧比較器２２で比較して、その差が設定範囲より大きい
時に、電圧の上げまたは下げを判断し、これに対応する
タップの切換接点をタップ選択器２３で判断して、その
対応する組合わせの交流スイッチ３０〜３５のＩＧＢＴ
３６にゲート信号を出力する。Since the secondary side of the detecting transformer 9 connected to the power supply lines 1 and 2 is connected to the voltage detecting section 20 of the control device 10, the voltage and the voltage waveform are detected here. Next, the detected voltage and the reference voltage from the reference voltage section 21 are compared by a voltage comparator 22. When the difference is larger than a set range, it is determined whether the voltage is to be increased or decreased, and the corresponding tap is switched. The contacts are determined by the tap selector 23, and the IGBTs of the AC switches 30 to 35 of the corresponding combination are determined.
The gate signal is output to 36.
【００２１】また電源線１、２の検出電圧が高く、出側
電圧を基準電圧の６．７ｋＶに下げる場合には、タップ
付き二次巻線５ｂのタップをＡＣ間からＡＢ間に切換え
る必要がある。このため交流スイッチ３０、３５がオン
の組合わせから、交流スイッチ３０、３４がオンの組合
わせに切換えるが、交流スイッチ３０〜３５を構成する
ＩＧＢＴ３６は、ゲートに正電圧を印加するとオンにな
って電流が流れ、また負電圧を印加するとオフして電流
を直ちに遮断することができるのでオン・オフ動作が速
い。When the detected voltages of the power supply lines 1 and 2 are high and the output voltage is reduced to the reference voltage of 6.7 kV, it is necessary to switch the tap of the tapped secondary winding 5b from AC to AB. is there. For this reason, the combination of the AC switches 30 and 35 being turned on is switched to the combination of the AC switches 30 and 34 being turned on. However, the IGBT 36 constituting the AC switches 30 to 35 is turned on when a positive voltage is applied to the gates. A current flows, and when a negative voltage is applied, the current is turned off and the current can be cut off immediately, so that the on / off operation is fast.
【００２２】従って従来のサイリスタを用いた装置のよ
うにバイパス回路６が不要となり、電圧調整不能時間が
０となるので直ちに必要なタップに切換えることがで
き、しかも切換頻度に制約がないので大きな電圧変動に
対しても短時間で電圧調整を行なうことができる。Accordingly, the bypass circuit 6 is unnecessary as in the conventional device using a thyristor, and the voltage adjustment disabled time becomes zero, so that the required tap can be immediately switched to the required tap. Voltage adjustment can be performed in a short time even for fluctuations.
【００２３】また限流リアクトル８は、直列変圧器４を
励磁する際の突入電流を抑制する作用があり、直列変圧
器４は定常状態では飽和しないが、タップ切換えの際に
飽和して過大な電流が流れることがあり、この現象は通
常の変圧器でも電源を接続する際にしばしば発生するこ
とがある。これは正弦波の電圧変化に遅れて励磁電流が
変化していくが、正弦波電圧のゼロポイントの近傍でタ
ップを切換えると励磁電流が大きくなって過電流を生じ
るからである。The current limiting reactor 8 has an action of suppressing an inrush current when exciting the series transformer 4. The series transformer 4 does not saturate in a steady state, but saturates during tap switching and becomes excessively large. Current may flow, and this phenomenon can often occur when connecting a power supply even in a normal transformer. This is because the exciting current changes later than the sine wave voltage change, but when the tap is switched near the zero point of the sine wave voltage, the exciting current increases and an overcurrent occurs.
【００２４】上記装置では、制御装置１０の電圧検出部
２０で、電源線１を流れる電流の電圧と電圧波形を検出
し、切換タイミング設定器４１で正弦波のピークを検出
し、正弦波のピークに合わせて、タップ選択器２３から
のゲート信号を交流スイッチ３０、３４のＩＧＢＴ３６
に出力する。この結果、タップ切換えの際に直列変圧器
４に流れる突入電流を最小にして直列変圧器４の飽和を
防止することができる。これはＩＧＢＴ３６などの自己
消弧型デバイスが高速でオン・オフできる特性を有して
いることから可能となったもので、突入電流を最小にで
きることから限流リアクトル８の小型化や除去も可能で
ある。なお正弦波のピークを検出する手段としては電圧
波形から検出する方法や、正弦波サイクルの中点を時間
的に設定する方法でも良い。In the above apparatus, the voltage detector 20 of the controller 10 detects the voltage and voltage waveform of the current flowing through the power supply line 1, the switching timing setting unit 41 detects the peak of the sine wave, and the peak of the sine wave. The IGBT 36 of the AC switches 30 and 34
Output to As a result, the inrush current flowing through the series transformer 4 during tap switching can be minimized to prevent the series transformer 4 from being saturated. This is possible because the self-extinguishing type device such as IGBT36 has the characteristic that it can be turned on and off at high speed. Since the inrush current can be minimized, the current-limiting reactor 8 can be reduced in size and eliminated. It is. As a means for detecting the peak of the sine wave, a method of detecting the peak from the voltage waveform or a method of setting the midpoint of the sine wave cycle in time may be used.
【００２５】図３は本発明の他の実施の形態を示すもの
で、交流スイッチ３０として直列に接続したＩＧＢＴ４
３とダイオード４５を、直列に接続したＩＧＢＴ４４と
ダイオード４６とを逆並列に接続したものである。一般
にＩＧＢＴは逆耐圧がほとんどないためダイオードを直
列に接続して逆圧が印加されないようにしている。FIG. 3 shows another embodiment of the present invention, in which an IGBT 4 connected in series as an AC switch 30 is shown.
3 and a diode 45, and an IGBT 44 and a diode 46 connected in series are connected in anti-parallel. In general, IGBTs have almost no reverse breakdown voltage, and diodes are connected in series so that no reverse pressure is applied.
【００２６】図４は本発明の異なる他の実施の形態を示
すもので、自己消弧型デバイスの一種であるＧＴＯを用
いたものである。この交流スイッチ３０は、直列に接続
したＧＴＯ４７とダイオード４９を、直列に接続したＧ
ＴＯ４８とダイオード５０とを逆並列に接続したもので
ある。なおＧＴＯも逆耐圧が低いものはダイオードを入
れる必要があるが、ＧＴＯの種類によって逆耐圧が高い
ものは省くことができる。FIG. 4 shows another embodiment of the present invention in which a GTO which is a kind of a self-extinguishing type device is used. The AC switch 30 includes a GTO 47 and a diode 49 connected in series, and a GTO 47 connected in series.
The TO48 and the diode 50 are connected in anti-parallel. It is necessary to insert a diode for a GTO having a low reverse breakdown voltage, but a GTO having a high reverse breakdown voltage can be omitted depending on the type of the GTO.
【００２７】なお上記説明では、励磁変圧器５あるいは
検出用変圧器９を電源線１の入り側１ａに設けた場合に
ついて示したが、出側１ｂに設けた構造でも良い。また
上記説明は単相回路の場合について示したが三相回路に
も当然適用することができる。なお本発明は配電線の電
圧調整に限らず、電源または負荷電圧の調整にも広く適
用することができる。In the above description, the case where the excitation transformer 5 or the detection transformer 9 is provided on the entrance side 1a of the power supply line 1 has been described, but it may be provided on the exit side 1b. Although the above description has been given of the case of a single-phase circuit, the present invention can naturally be applied to a three-phase circuit. The present invention is not limited to voltage adjustment of distribution lines, but can be widely applied to power supply or load voltage adjustment.
【００２８】[0028]
【発明の効果】以上説明した如く本発明に係る電圧調整
装置によれば、交流スイッチとして半導体デバイスの制
御端子に加える信号によって電流を制御する自己消弧型
デバイスで形成されているので、高速でオン・オフする
ことができる。この結果、従来のバイパス回路が不要と
なって直ちに必要なタップに切換えることができ、しか
も切換頻度に制約がないので大きな電圧変動に対しても
短時間で電圧調整を行なうことができる。更に切換タイ
ミング設定器を設けたものは、直列変圧器に流れる突入
電流を最小にして飽和を防止できるので、限流リアクト
ルの小型化や除去も可能である。As described above, according to the voltage regulator according to the present invention, since the AC switch is formed by a self-extinguishing device that controls the current by a signal applied to the control terminal of the semiconductor device, it can operate at high speed. Can be turned on and off. As a result, a conventional bypass circuit is not required, and it is possible to immediately switch to a required tap, and since there is no restriction on the switching frequency, voltage adjustment can be performed in a short time even for a large voltage fluctuation. Further, the one provided with the switching timing setter can prevent the saturation by minimizing the rush current flowing through the series transformer, so that the current limiting reactor can be reduced in size and eliminated.
【図１】本発明の実施の一形態による単相回路で示した
電圧調整装置の回路図である。FIG. 1 is a circuit diagram of a voltage regulator shown as a single-phase circuit according to an embodiment of the present invention.
【図２】図１に示すＩＧＢＴを用いた交流スイッチの回
路図である。FIG. 2 is a circuit diagram of an AC switch using the IGBT shown in FIG.
【図３】本発明の他の実施の形態によるＩＧＢＴを用い
た交流スイッチの回路図である。FIG. 3 is a circuit diagram of an AC switch using an IGBT according to another embodiment of the present invention.
【図４】本発明の異なる他の実施の形態によるＧＴＯを
用いた交流スイッチの回路図である。FIG. 4 is a circuit diagram of an AC switch using a GTO according to another embodiment of the present invention.
【図５】従来のサイリスタを用いた電圧調整装置の回路
図である。FIG. 5 is a circuit diagram of a voltage regulator using a conventional thyristor.
１ 電源線 ２ 電源線 ３ 電圧調整装置 ４ 直列変圧器 ４ｂ 二次巻線 ５ 励磁変圧器 ５ｂ タップ付き二次巻線 ６ バイパス回路 ７ 抵抗器 ８ 限流リアクトル ９ 検出用変圧器 １０ 制御装置 １１ 交流スイッチ ２０ 電圧検出部 ２３ タップ選択器 ３０ 交流スイッチ ３６ ＩＧＢＴ ３７ ダイオード ４１ 切換タイミング設定器 ４３ ＩＧＢＴ ４５ ダイオード ４７ ＧＴＯ DESCRIPTION OF SYMBOLS 1 Power supply line 2 Power supply line 3 Voltage regulator 4 Series transformer 4b Secondary winding 5 Exciting transformer 5b Secondary winding with tap 6 Bypass circuit 7 Resistor 8 Current limiting reactor 9 Detection transformer 10 Control device 11 AC Switch 20 Voltage detector 23 Tap selector 30 AC switch 36 IGBT 37 Diode 41 Switching timing setter 43 IGBT 45 Diode 47 GTO
Claims (4)
の二次巻線と、電源線間に並列的に接続された励磁変圧
器のタップ付き二次巻線とを、半導体デバイスで形成さ
れた交流スイッチを介してタップ切換えするように接続
した電圧調整装置において、前記半導体デバイスとして
自己消弧型デバイスを用いたことを特徴とする電圧調整
装置。1. A semiconductor device comprising: a secondary winding of a series transformer connected in series to a power supply line; and a tapped secondary winding of an excitation transformer connected in parallel between the power supply lines. A voltage regulator connected to switch taps via a formed AC switch, wherein a self-extinguishing device is used as the semiconductor device.
いたことを特徴とする請求項１記載の電圧調整装置。2. The voltage regulator according to claim 1, wherein an IGBT is used as the self-extinguishing device.
たことを特徴とする請求項１記載の電圧調整装置。3. The voltage regulator according to claim 1, wherein GTO is used as the self-extinguishing device.
換信号を出力する切換タイミング設定器を、交流スイッ
チに接続したことを特徴とする請求項１記載の電圧調整
装置。4. The voltage regulator according to claim 1, wherein a switching timing setter for detecting a peak of the sine wave voltage waveform and outputting a switching signal is connected to the AC switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32024597A JP3479899B2 (en) | 1997-09-16 | 1997-09-16 | Voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32024597A JP3479899B2 (en) | 1997-09-16 | 1997-09-16 | Voltage regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1195846A true JPH1195846A (en) | 1999-04-09 |
| JP3479899B2 JP3479899B2 (en) | 2003-12-15 |
Family
ID=18119352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32024597A Expired - Fee Related JP3479899B2 (en) | 1997-09-16 | 1997-09-16 | Voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3479899B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431241B1 (en) * | 2002-01-08 | 2004-05-17 | 주식회사 엔시스 | Automatic Voltage Regulator Using the Voltage-Control Winding |
| JP2007238284A (en) * | 2006-03-09 | 2007-09-20 | Hitachi Ltd | Elevator brake control device |
| KR100767475B1 (en) | 2006-11-17 | 2007-10-17 | 주식회사 오.엘.티 | Automatic high voltage regulator and transformer including automatic high voltage regulator |
| KR100855639B1 (en) | 2006-10-11 | 2008-09-01 | 이충석 | High voltage circuit breaker having function of preventing opening and closing surge |
| KR100857236B1 (en) | 2006-11-22 | 2008-09-05 | 한일월드(주) | Voltage regulator for 3-phase votage and control method thereof |
| WO2009075394A1 (en) * | 2007-12-10 | 2009-06-18 | Chung Suk Lee | High voltage circuit breaker having function of preventing opening and closing surge |
| JP2012165638A (en) * | 2011-02-08 | 2012-08-30 | General Electric Co <Ge> | Dynamic voltage restoration system and method |
| CN103474997A (en) * | 2013-08-20 | 2013-12-25 | 上海宁邦电气有限公司 | Voltage stabilization equipment capable of saving electricity, optimizing electric energy and automatically adjusting voltage for system |
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| CN103680863A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Quadrature booster wiring method |
| JP2015506543A (en) * | 2011-12-29 | 2015-03-02 | アルチュリク・アノニム・シルケチ | Wireless kitchen utensils operated on induction cooker |
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1997
- 1997-09-16 JP JP32024597A patent/JP3479899B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431241B1 (en) * | 2002-01-08 | 2004-05-17 | 주식회사 엔시스 | Automatic Voltage Regulator Using the Voltage-Control Winding |
| JP2007238284A (en) * | 2006-03-09 | 2007-09-20 | Hitachi Ltd | Elevator brake control device |
| KR100855639B1 (en) | 2006-10-11 | 2008-09-01 | 이충석 | High voltage circuit breaker having function of preventing opening and closing surge |
| KR100767475B1 (en) | 2006-11-17 | 2007-10-17 | 주식회사 오.엘.티 | Automatic high voltage regulator and transformer including automatic high voltage regulator |
| KR100857236B1 (en) | 2006-11-22 | 2008-09-05 | 한일월드(주) | Voltage regulator for 3-phase votage and control method thereof |
| WO2009075394A1 (en) * | 2007-12-10 | 2009-06-18 | Chung Suk Lee | High voltage circuit breaker having function of preventing opening and closing surge |
| JP2012165638A (en) * | 2011-02-08 | 2012-08-30 | General Electric Co <Ge> | Dynamic voltage restoration system and method |
| JP2015506543A (en) * | 2011-12-29 | 2015-03-02 | アルチュリク・アノニム・シルケチ | Wireless kitchen utensils operated on induction cooker |
| JP2015506742A (en) * | 2011-12-29 | 2015-03-05 | アルチュリク・アノニム・シルケチ | Wireless kitchen utensils operated on induction cooker |
| US10129935B2 (en) | 2011-12-29 | 2018-11-13 | Arcelik Anonim Sirketi | Wireless kitchen appliance operated on an induction heating cooker |
| US10182472B2 (en) | 2011-12-29 | 2019-01-15 | Arcelik Anonim Sirketi | Wireless kitchen appliance operated on induction heating cooker |
| JP2014023227A (en) * | 2012-07-16 | 2014-02-03 | Aichi Electric Co Ltd | Instantaneous voltage adjusting device and instantaneous voltage adjusting method |
| CN103474997A (en) * | 2013-08-20 | 2013-12-25 | 上海宁邦电气有限公司 | Voltage stabilization equipment capable of saving electricity, optimizing electric energy and automatically adjusting voltage for system |
| CN103680863A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Quadrature booster wiring method |
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