JPH10304665A - Voltage control equipment - Google Patents

Voltage control equipment

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Publication number
JPH10304665A
JPH10304665A JP12337197A JP12337197A JPH10304665A JP H10304665 A JPH10304665 A JP H10304665A JP 12337197 A JP12337197 A JP 12337197A JP 12337197 A JP12337197 A JP 12337197A JP H10304665 A JPH10304665 A JP H10304665A
Authority
JP
Japan
Prior art keywords
circuit
voltage
transformer
tap
power supply
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.)
Granted
Application number
JP12337197A
Other languages
Japanese (ja)
Other versions
JP2986424B2 (en
Inventor
Takumi Morita
拓実 森田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawamura Electric Inc
Original Assignee
Kawamura Electric Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawamura Electric Inc filed Critical Kawamura Electric Inc
Priority to JP9123371A priority Critical patent/JP2986424B2/en
Publication of JPH10304665A publication Critical patent/JPH10304665A/en
Application granted granted Critical
Publication of JP2986424B2 publication Critical patent/JP2986424B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Ac-Ac Conversion (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the breakdown of a power supply circuit in a control section or a coil of controlling magnet by connecting a three-pole circuit breaker for protecting a voltage control circuit from abnormal current to the primary side of X-phase and Y-phase controlling magnet contactor and a power supply circuit of a control section of a voltage control equipment. SOLUTION: When non-contact switches SSR1x to SSRnx and SSR1Y to SSRny fail in short-circuit mode due to surge noise or the like from the external, if the primary voltage of a transformer TR of the main circuit rises, a tap is disconnected and a tap in one forward step is selected, but an ordinary non-contact switch and a non-contact switch in one forward step are turned on at the same time in the moment when the tap in one forward stage has been selected, an interlayer short circuit of a transformer TR occurs and circuit breaker MCB1 protecting the above is operated. Then, at the same time with the operation of the circuit breaker MCB1, magnet contactors MC1, MC2, MC3 for control and a cable way to the power supply circuit 3 of a control section 2 are also disconnected.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、主回路のトランス
の一次側又は二次側電圧を常時監視し、トランスに設け
た複数のタップを無接点スイッチで切り換えることによ
りトランスの出力電圧を制御し、トランスの二次側に接
続された負荷機器に印加される電圧を予め設定した基準
電圧に近付ける電圧制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention always monitors the primary or secondary voltage of a transformer in a main circuit, and controls the output voltage of the transformer by switching a plurality of taps provided on the transformer with a non-contact switch. The present invention relates to a voltage control device for bringing a voltage applied to a load device connected to a secondary side of a transformer close to a preset reference voltage.

【０００２】[0002]

【従来の技術】従来、電圧制御装置は、図３に示すよう
なものであった。即ち、電圧制御装置２１は、主回路の
トランスＴＲにはＸ相に複数のタップＴ１ｘ，Ｔ２ｘ，
Ｔ３ｘ，・・・，Ｔｎｘが、Ｙ相に複数のタップＴ１
ｙ，Ｔ２ｙ，Ｔ３ｙ，・・・，Ｔｎｙ，が夫々設けら
れ、これらのタップには夫々無接点スイッチＳＳＲ１
ｘ，ＳＳＲ２ｘ，ＳＳＲ３ｘ，・・・，ＳＳＲｎｘ、Ｓ
ＳＲ１ｙ，ＳＳＲ２ｙ，ＳＳＲ３ｙ，・・・，ＳＳＲｎ
ｙが設けられ、無接点スイッチの一次側には制御用マグ
ネットコンタクタＭＣ１を介して二極の回路遮断器ＭＣ
Ｂ２が接続されている。2. Description of the Related Art Conventionally, a voltage control device is as shown in FIG. That is, the voltage control device 21 includes a plurality of taps T1x, T2x,
, Tnx have a plurality of taps T1 in the Y phase.
y, T2y, T3y,..., Tny, and these taps are respectively provided with a non-contact switch SSR1.
x, SSR2x, SSR3x, ..., SSRnx, S
SR1y, SSR2y, SSR3y,..., SSRn
and a two-pole circuit breaker MC on the primary side of the contactless switch via a control magnet contactor MC1.
B2 is connected.

【０００３】電圧制御装置２１は、主回路のトランスＴ
Ｒの一次側又は二次側の電圧を常時監視し、トランスＴ
Ｒの二次側に接続された負荷機器に印加される電圧を制
御部２２で予め設定した基準電圧に近付けるように、無
接点スイッチをシーケンサ（図示せず）の制御により切
り換える。The voltage control device 21 includes a transformer T of a main circuit.
The primary or secondary voltage of R is constantly monitored, and the transformer T
The contactless switch is switched under the control of a sequencer (not shown) so that the voltage applied to the load device connected to the secondary side of R approaches the reference voltage preset by the control unit 22.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら上記従来
の電圧制御装置２１は、外部からのサージノイズ等で無
接点スイッチが短絡モードで故障した時、主回路のトラ
ンスＴＲの一次側電圧が上昇すると、そのタップを切り
離し、一段階上のタップが選択されるが、一段階上のタ
ップが選択された瞬間に、通常のタップの無接点スイッ
チと、一段階上のタップの無接点スイッチが同時にオン
になり、トランスＴＲの相間短絡が発生し、これを保護
する回路遮断器ＭＣＢ２が動作し、トランスＴＲの一次
側が開放状態となる。するとトランスＴＲの二次側の負
荷電流により、トランスＴＲの一次側に発生する高電圧
により制御用マグネットコンタクタＭＣ１，ＭＣ２のコ
イルや制御部２２の電源回路２３が破壊されることがあ
った。However, when the non-contact switch fails in the short-circuit mode due to external surge noise or the like and the primary voltage of the transformer TR of the main circuit rises, the conventional voltage controller 21 described above Disconnect the tap and select the next higher tap.At the moment the upper tap is selected, the normal tap solid state switch and the higher tap solid state switch are simultaneously turned on. As a result, a short circuit between the phases of the transformer TR occurs, the circuit breaker MCB2 for protecting the short circuit operates, and the primary side of the transformer TR is opened. Then, due to the load current on the secondary side of the transformer TR, the high voltage generated on the primary side of the transformer TR may destroy the coils of the control magnet contactors MC1 and MC2 and the power supply circuit 23 of the control unit 22.

【０００５】[0005]

【課題を解決するための手段】上記従来の電圧制御装置
の問題点に鑑み、本発明の目的は、無接点スイッチが短
絡モードで故障して回路遮断器が動作しても、トランス
の二次側の負荷電流によりトランスの一次側に発生した
高電圧の影響によって、制御用マグネットのコイルや制
御部の電源回路が破壊されるのを防ぐことができる電圧
制御装置を提供するもので、単相３線式電路の主回路の
トランスの一次側又は二次側の電圧を常時監視し、前記
トランスに設けた複数のタップを無接点スイッチで切り
換え、前記トランスの出力電圧を制御し、前記トランス
の二次側に接続された負荷機器に印加される電圧を予め
設定した基準電圧に近付ける電圧制御装置において、異
常電流から電圧制御装置を保護するための三極の回路遮
断器がＸ相及びＹ相の制御用マグネットコンタクタの一
次側、及び前記電圧制御装置の制御部の電源回路に接続
されたことである。SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional voltage control device, an object of the present invention is to provide a secondary transformer for a transformer even if a contactless switch fails in a short-circuit mode and a circuit breaker operates. A single-phase voltage control device is provided that can prevent the coil of the control magnet and the power supply circuit of the control unit from being destroyed by the effect of the high voltage generated on the primary side of the transformer due to the load current on the side. The voltage on the primary side or the secondary side of the transformer of the main circuit of the three-wire circuit is constantly monitored, a plurality of taps provided on the transformer are switched by a non-contact switch, and the output voltage of the transformer is controlled. In a voltage control device that brings a voltage applied to a load device connected to a secondary side close to a preset reference voltage, a three-pole circuit breaker for protecting the voltage control device from an abnormal current has an X-phase and a Y-phase. Primary side of the control magnet contactor, and that connected to said power source circuit of the control unit of the voltage controller.

【０００６】[0006]

【発明の実施の形態】外部からのサージノイズ等で無接
点スイッチが短絡モードで故障した時、主回路のトラン
スの一次側電圧が上昇すると、そのタップを切り離し、
一段階上のタップが選択されるが、一段階上のタップが
選択された瞬間に、通常のタップの無接点スイッチと、
一段階上のタップの無接点スイッチが同時にオンにな
り、トランスの相間短絡が発生し、これを保護する回路
遮断器が動作する。すると回路遮断器の動作と同時に制
御用マグネットコンタクタや、制御部の電源回路への電
路も遮断されるため、トランスの二次側の負荷電流によ
りトランスの一次側に発生した高電圧の影響によって、
制御用マグネットコンタクタのコイルや制御部の電源回
路が破壊されることなく直送になる。DESCRIPTION OF THE PREFERRED EMBODIMENTS When a non-contact switch fails in short-circuit mode due to external surge noise or the like, if the primary voltage of the transformer of the main circuit rises, the tap is disconnected.
The upper tap is selected, but at the moment the upper tap is selected, a non-contact switch of a normal tap,
The contactless switch of the upper tap is simultaneously turned on, causing a short circuit between the transformer phases, and the circuit breaker for protecting the short circuit operates. Then, at the same time as the operation of the circuit breaker, the control magnetic contactor and the electric circuit to the power supply circuit of the control unit are also cut off, so the high voltage generated on the primary side of the transformer due to the load current on the secondary side of the transformer causes
It is sent directly without damaging the coil of the control magnet contactor and the power supply circuit of the control unit.

【０００７】[0007]

【実施例】本発明に係る電圧制御装置の第１実施例を図
１に示す。以下この図面に基づいて本発明を説明する。FIG. 1 shows a first embodiment of a voltage control apparatus according to the present invention. Hereinafter, the present invention will be described with reference to the drawings.

【０００８】電圧制御装置１は、主回路のトランスＴＲ
にはＸ相に複数のタップＴ１ｘ，Ｔ２ｘ，Ｔ３ｘ，・・
・，Ｔｎｘが、Ｙ相に複数のタップＴ１ｙ，Ｔ２ｙ，Ｔ
３ｙ，・・・，Ｔｎｙ，が夫々設けられ、これらのタッ
プには夫々無接点スイッチＳＳＲ１ｘ，ＳＳＲ２ｘ，Ｓ
ＳＲ３ｘ，・・・，ＳＳＲｎｘ、ＳＳＲ１ｙ，ＳＳＲ２
ｙ，ＳＳＲ３ｙ，・・・，ＳＳＲｎｙが設けられ、無接
点スイッチの一次側に三極の回路遮断器ＭＣＢ１が接続
され、Ｘ相及びＹ相の制御用マグネットコンタクタＭＣ
１の一次側、及び電圧制御装置１の制御部２の電源回路
３に接続されている。The voltage control device 1 includes a transformer TR of a main circuit.
Has a plurality of taps T1x, T2x, T3x,.
., Tnx is a plurality of taps T1y, T2y, T
, Tny, are provided respectively, and these taps are provided with non-contact switches SSR1x, SSR2x, SSR, respectively.
SR3x,..., SSRnx, SSR1y, SSR2
, SSRny, a three-pole circuit breaker MCB1 connected to the primary side of a non-contact switch, and an X-phase and Y-phase control magnet contactor MC
1 and the power supply circuit 3 of the control unit 2 of the voltage control device 1.

【０００９】電圧制御装置１は、主回路のトランスＴＲ
の一次側又は二次側の電圧を常時監視し、トランスＴＲ
の二次側に接続された負荷機器に印加される電圧を制御
部２で予め設定した基準電圧に近付けるように、無接点
スイッチをシーケンサ（図示せず）の制御により切り換
える。The voltage control device 1 includes a transformer TR of a main circuit.
Constantly monitors the primary or secondary voltage of the
The non-contact switch is switched under the control of a sequencer (not shown) so that the voltage applied to the load equipment connected to the secondary side of the controller approaches the reference voltage set in advance by the control unit 2.

【００１０】外部からのサージノイズ等で無接点スイッ
チが短絡モードで故障した時、主回路のトランスＴＲの
一次側電圧が上昇すると、そのタップを切り離し、一段
階上のタップが選択されるが、一段階上のタップが選択
された瞬間に、通常のタップの無接点スイッチと、一段
階上のタップの無接点スイッチが同時にオンになり、ト
ランスＴＲの相間短絡が発生し、これを保護する回路遮
断器ＭＣＢ１が動作する。するとこの回路遮断器ＭＣＢ
１の動作と同時に制御用マグネットコンタクタＭＣ１，
ＭＣ２，ＭＣ３や、制御部２の電源回路３への電路も遮
断されるため、トランスＴＲの二次側の負荷電流により
トランスＴＲの一次側に発生した高電圧の影響によっ
て、制御用マグネットコンタクタＭＣ１，ＭＣ２のコイ
ルや制御部２の電源回路３が破壊されることなく直送に
なる。When the primary side voltage of the transformer TR of the main circuit rises when the non-contact switch fails in the short-circuit mode due to external surge noise or the like, the tap is disconnected and the tap one level higher is selected. At the moment when the upper tap is selected, the contactless switch of the normal tap and the contactless switch of the upper tap are simultaneously turned on, and a short circuit between the phases of the transformer TR occurs to protect the same. The circuit breaker MCB1 operates. Then this circuit breaker MCB
1 and the control magnet contactors MC1,
MC2 and MC3 and the electric circuit to the power supply circuit 3 of the control unit 2 are also cut off, so that the control magnet contactor MC1 is controlled by the high voltage generated on the primary side of the transformer TR by the load current on the secondary side of the transformer TR. , MC2 and the power supply circuit 3 of the control unit 2 are directly sent without being destroyed.

【００１１】また、図２に示す第２実施例のように、ト
ランスＴＲの一次側タップの両端にサージアブソーバＺ
ＮＲｘ，ＺＮＲｙと、ヒューズＦＵＳＥｘ，ＦＵＳＥｙ
を設けることにより、、回路遮断器ＭＣＢ１の遮断の確
実性を向上させることができる。Further, as in a second embodiment shown in FIG. 2, a surge absorber Z is provided at both ends of the primary tap of the transformer TR.
NRx, ZNRy and fuses FUSEx, FUSEy
Is provided, the reliability of interruption of the circuit breaker MCB1 can be improved.

【００１２】[0012]

【発明の効果】以上のように本発明に係る電圧制御装置
は、単相３線式電路の主回路のトランスの一次側又は二
次側の電圧を常時監視し、前記トランスに設けた複数の
タップを無接点スイッチで切り換え、前記トランスの出
力電圧を制御し、前記トランスの二次側に接続された負
荷機器に印加される電圧を予め設定した基準電圧に近付
ける電圧制御装置において、異常電流から電圧制御装置
を保護するための三極の回路遮断器がＸ相及びＹ相の制
御用マグネットコンタクタの一次側、及び前記電圧制御
装置の制御部の電源回路に接続されたことによって、無
接点スイッチが短絡モードで故障して回路遮断器が動作
しても、トランスの二次側の負荷電流によりトランスの
一次側に発生した高電圧の影響によって、制御用マグネ
ットのコイルや制御部の電源回路が破壊されるのを防ぐ
ことができ、非常に安全であるという効果がある。As described above, the voltage control apparatus according to the present invention constantly monitors the primary or secondary voltage of the transformer in the main circuit of the single-phase three-wire circuit, and controls the plurality of the plurality of transformers provided in the transformer. A tap is switched by a non-contact switch to control an output voltage of the transformer, and a voltage control device that brings a voltage applied to a load device connected to a secondary side of the transformer close to a preset reference voltage. A three-pole circuit breaker for protecting the voltage control device is connected to the primary side of the X-phase and Y-phase control magnet contactors and to the power supply circuit of the control unit of the voltage control device. If the circuit breaker operates in the short-circuit mode and the circuit breaker operates, the control magnet coil and Can power circuit parts are prevented from being destroyed, there is an effect that it is very safe.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る電圧制御装置の第１実施例の説明
図である。FIG. 1 is an explanatory diagram of a first embodiment of a voltage control device according to the present invention.

【図２】本発明に係る電圧制御装置の第２実施例の説明
図である。FIG. 2 is an explanatory diagram of a second embodiment of the voltage control device according to the present invention.

【図３】従来の電圧制御装置の説明図である。FIG. 3 is an explanatory diagram of a conventional voltage control device.

【符号の説明】[Explanation of symbols]

１・・・電圧制御装置、２・・・制御部、３・・・電源
回路、ＴＲ・・・トランス、Ｔ１ｘ，Ｔ２ｘ，Ｔ３ｘ，
Ｔｎｘ，Ｔ１ｙ，Ｔ２ｙ，Ｔ３ｙ，Ｔｎｙ・・・タッ
プ、ＳＳＲ１ｘ，ＳＳＲ２ｘ，ＳＳＲ３ｘ，ＳＳＲｎ
ｘ，ＳＳＲ１ｙ，ＳＳＲ２ｙ，ＳＳＲ３ｙ，ＳＳＲｎｙ
・・・無接点スイッチ、ＭＣ１，ＭＣ２，ＭＣ３・・・
制御用マグネットコンタクタ。DESCRIPTION OF SYMBOLS 1 ... Voltage control device, 2 ... Control part, 3 ... Power supply circuit, TR ... Transformer, T1x, T2x, T3x,
Tnx, T1y, T2y, T3y, Tny ... tap, SSR1x, SSR2x, SSR3x, SSRn
x, SSR1y, SSR2y, SSR3y, SSRny
... Solid state switches, MC1, MC2, MC3 ...
Control magnet contactor.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 単相３線式電路の主回路のトランスの一
次側又は二次側の電圧を常時監視し、前記トランスに設
けた複数のタップを無接点スイッチで切り換え、前記ト
ランスの出力電圧を制御し、前記トランスの二次側に接
続された負荷機器に印加される電圧を予め設定した基準
電圧に近付ける電圧制御装置において、異常電流から電
圧制御装置を保護するための三極の回路遮断器がＸ相及
びＹ相の制御用マグネットコンタクタの一次側、及び前
記電圧制御装置の制御部の電源回路に接続されたことを
特徴とする電圧制御装置。An output voltage of the transformer is monitored by constantly monitoring a primary or secondary voltage of a transformer of a main circuit of a single-phase three-wire circuit, and switching a plurality of taps provided on the transformer by a non-contact switch. A voltage control device that controls a voltage applied to a load device connected to the secondary side of the transformer to a predetermined reference voltage, and a three-pole circuit cutoff for protecting the voltage control device from abnormal current. A voltage controller connected to a primary side of the X-phase and Y-phase control magnet contactors and a power supply circuit of a control unit of the voltage controller.
JP9123371A 1997-04-25 1997-04-25 Voltage controller Expired - Lifetime JP2986424B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9123371A JP2986424B2 (en) 1997-04-25 1997-04-25 Voltage controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9123371A JP2986424B2 (en) 1997-04-25 1997-04-25 Voltage controller

Publications (2)

Publication Number Publication Date
JPH10304665A true JPH10304665A (en) 1998-11-13
JP2986424B2 JP2986424B2 (en) 1999-12-06

Family

ID=14858937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9123371A Expired - Lifetime JP2986424B2 (en) 1997-04-25 1997-04-25 Voltage controller

Country Status (1)

Country Link
JP (1) JP2986424B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007080009A (en) * 2005-09-15 2007-03-29 Hugle Electronics Inc Alternating current stabilization power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007080009A (en) * 2005-09-15 2007-03-29 Hugle Electronics Inc Alternating current stabilization power supply

Also Published As

Publication number Publication date
JP2986424B2 (en) 1999-12-06

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