JPH0516846Y2 - - Google Patents
Info
- Publication number
- JPH0516846Y2 JPH0516846Y2 JP1986061996U JP6199686U JPH0516846Y2 JP H0516846 Y2 JPH0516846 Y2 JP H0516846Y2 JP 1986061996 U JP1986061996 U JP 1986061996U JP 6199686 U JP6199686 U JP 6199686U JP H0516846 Y2 JPH0516846 Y2 JP H0516846Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- torque
- tap switching
- upper limit
- switch
- 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 - Lifetime
Links
- 230000005856 abnormality Effects 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Protection Of Transformers (AREA)
Description
【考案の詳細な説明】
〔考案の属する技術分野〕
変圧器本体タンク内に設置された切換開閉器、
タツプ選択器、極性切換器等あるいは伝動機構部
の機械的異常を検知して信号を発する異常検出装
置を備えた負荷時タツプ切換装置に関する。[Detailed description of the invention] [Technical field to which the invention belongs] A switching switch installed in the main tank of a transformer,
The present invention relates to a tap switching device under load, which is equipped with an abnormality detection device that detects a mechanical abnormality in a tap selector, a polarity changer, etc., or a transmission mechanism and issues a signal.
負荷時タツプ切換装置の機械的な内部異常を検
出する装置としては、従来電動操作部内に設けた
駆動電動機の過電流を検知する配線用遮断器、あ
るいは制御盤内に設けられた１タツプ切換動作時
間（通常５ないし６秒程度）の遅滞を検知するタ
ツプ渋滞警報装置などが知られている。ところが
配線用しや断器では駆動電動機の始動電流が大き
いことなどにより過電流の設定値を通常の電流値
に比べて遥かに大きく設定する必要があり、内部
異常を検知して配線用遮断器が動作する時点にお
いては負荷時タツプ切換装置の機械的内部異常が
かなり進んでしまうことが多く、負荷時タツプ切
換装置の機械的損傷に起因する電気的損傷により
負荷時タツプ切換装置ばかりでなく変圧器本体ま
でが致命的な損傷を受けてしまう危険性がある。
また、タツプ渋滞警報装置は通常５ないし６秒程
度の１タツプ切換動作時間が10秒程度にまで遅滞
してもタツプ切換えによる電圧変化が生じなかつ
た場合機械的内部異常が発生したものと判断して
警報指令信号を出力するものであり、タツプ渋滞
を生ずる程の機械的内部異常が発生してから数秒
経過しないと異常を検知することができず、遅れ
時間が大きいために内部異常が進展してしまうと
いう欠点がある。
Conventional devices for detecting mechanical internal abnormalities in tap switching devices under load include a molded circuit breaker installed in the electric operation unit to detect overcurrent of the drive motor, or a one-tap switching device installed in the control panel. Tap traffic jam warning devices that detect delays in time (usually about 5 to 6 seconds) are known. However, due to the large starting current of the drive motor, it is necessary to set the overcurrent value much higher than the normal current value in case of a molded circuit breaker. By the time the on-load tap changer operates, the mechanical internal abnormality of the on-load tap changer is often far advanced, and electrical damage caused by mechanical damage to the on-load tap changer may cause damage to not only the on-load tap changer but also the transformer. There is a risk that the main body of the device may be fatally damaged.
In addition, the tap congestion warning system determines that a mechanical internal abnormality has occurred if no voltage change occurs due to tap switching even if the operating time for one tap switching, which is usually about 5 to 6 seconds, is delayed to about 10 seconds. The system outputs an alarm command signal, and the abnormality cannot be detected until a few seconds have passed after an internal mechanical abnormality that causes tap congestion occurs, and the internal abnormality may progress due to the long delay time. It has the disadvantage of being
本考案は前述の状況に鑑みてなされたもので、
機械的内部異常に伴う駆動トルクの変化を早期に
検知でき、したがつて負荷時タツプ切換装置なら
びに変圧器本体の致命的な損傷を未然に防止でき
る異常検出装置を備えた負荷時タツプ切換装置を
提供することを目的とする。
This idea was created in view of the above-mentioned situation.
The on-load tap switching device is equipped with an abnormality detection device that can detect changes in drive torque due to internal mechanical abnormalities at an early stage, thereby preventing catastrophic damage to the on-load tap switching device and the transformer body. The purpose is to provide.
本考案は、負荷時タツプ切換装置内部機構部の
機械的かじり、異常摩耗などがあつたときには主
駆動軸のトルクが定常値より異常増加し、内部駆
動軸や付勢部品の折損、接触子の欠落等の異常が
あつた場合には主駆動軸のトルクが定常値より異
常低下すること、ならびに定常的なトルクの大き
さおよびその経時変化特性を経験的に把握しうる
ことに着目してなされたもので、軸鋼など高弾性
材からなる主駆動軸の機械的な歪を検知して駆動
トルクに比例した電気信号に変換し出力するトル
ク検出器と、前記トルクの異常増加を判断するた
めの定常値の1.2ないし1.5倍程度の上限設定信
号、ならびにトルクの異常低下を判断するための
低レベルの下限設定信号をそれぞれ発する設定器
の出力設定信号と、前記トルク検出器の出力電気
信号とを受けてトルク検出器の出力電気信号レベ
ルが上限、下限設定信号レベルから外れたとき、
機械的内部異常が発生したものと判断して負荷時
タツプ切換装置の停止指令信号、警報指令信号の
うち少くとも一方の信号を発する判断部とからな
る異常検出装置を備えるよう構成したことによ
り、負荷時タツプ切換装置の機械的内部異常の発
生を遅滞なく早期に検知することが可能となり、
したがつて負荷時タツプ切換装置および変圧器本
体の致命的な損傷を未然に防止できるようにした
ものである。
In this invention, when there is mechanical galling or abnormal wear in the internal mechanism of the tap switching device under load, the torque of the main drive shaft will abnormally increase from the steady value, causing breakage of the internal drive shaft and biasing parts, and damage to the contactor. This was done with the focus on the fact that when an abnormality such as a chipping occurs, the torque of the main drive shaft will be abnormally lower than the steady value, and that the magnitude of the steady torque and its characteristics over time can be understood empirically. It is equipped with a torque detector that detects the mechanical strain of the main drive shaft made of highly elastic material such as shaft steel, converts it into an electrical signal proportional to the drive torque, and outputs it, and a torque detector that detects an abnormal increase in the torque. an output setting signal of a setting device that issues an upper limit setting signal of about 1.2 to 1.5 times the steady value of the torque detector, and a lower limit setting signal of a low level for determining an abnormal decrease in torque; and an output electric signal of the torque detector. When the output electric signal level of the torque detector deviates from the upper and lower limit set signal levels,
By being configured to include an abnormality detection device comprising a determination section that determines that an internal mechanical abnormality has occurred and issues at least one of a stop command signal and an alarm command signal for the load tap switching device. It is now possible to detect mechanical internal abnormalities in the load tap switching device at an early stage without delay.
Therefore, it is possible to prevent fatal damage to the on-load tap switching device and the main body of the transformer.
以下本考案を実施例に基づいて説明する。 The present invention will be explained below based on examples.
第１図は本考案の実施例装置を示す概略構成図
である。図において、１は変圧器本体タンク９の
蓋板に支持された切換開閉器、２は切換開閉器１
に連結支持されたタツプ選択器、３は切換開閉器
１およびタツプ選択器２に連結支持された極性切
換器（または転位切換器）であり、本体タンク９
の外壁側に設けられた電動操作部４と、電動操作
部４内に設けられた駆動電動機により駆動される
軸鋼などの高弾性材からなる主駆動軸５により切
換開閉器１、タツプ選択器２、極性切換器３が所
定の動作順序に基づいてタツプ切換動作を行うこ
とによりタツプ切換えが行われるよう構成されて
いる。また、１０は異常検出装置であり、主駆動
軸５の要所に取付けられた温度補償付きの金属形
ひずみゲージ、半導体ひずみゲージ等からなるト
ルク検出器１１と、トルクの異常上昇の判定レベ
ルを指示する上限設定信号を出力する上限側の設
定器１２およびトルクの異常低下の判定レベルを
指示する下限設定信号を出力する下限側の設定器
１５と、トルク検出器１１の出力電気信号ならび
に設定器１２の出力上限信号とを受けて出力電気
信号が上限設定信号レベルを超えたとき、負荷時
タツプ切換装置にかじりによるタツプ渋滞等の機
械的内部異常があつたものと判定して負荷時タツ
プ切換装置のタツプ切換動作の停止指令信号およ
び警報機１４に警報指令信号、またはいずれか一
方の指令信号を発する上限側判断部１３、ならび
にトルク検出器１１の出力電気信号および設定器
１５の出力下限設定信号を受けて、出力電気信号
が下限設定信号レベルを下回わつたとき駆動軸の
折損等のトルク異常低下をもたらす機械的内部異
常が発生したものと判断して停止指令信号または
警報機１８に警報指令信号の両方またはいずれか
一方を出力する下限側判断部１７とで構成されて
いる。また１６はタイマースイツチ等の時限回路
であり、１タツプ切換動作期間中の低トルク領域
で下限側判断部が誤動作するのを防ぐために、電
動操作部４からの始動指令信号を受けて所定時間
t1遅れて高トルク状態となるt2期間設定器１５の
出力下限設定信号を通過させるよう構成されてお
り、下限判断部１７はt2期間中にトルク検出器１
１の出力電気信号が下限設定信号レベルを下回つ
た時にのみ信号を発するよう構成される。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention. In the figure, 1 is a switching switch supported on the cover plate of the transformer main tank 9, and 2 is a switching switch 1.
3 is a polarity switch (or shift switch) connected and supported to the switching switch 1 and the tap selector 2;
The switching switch 1 and the tap selector are operated by an electric operation part 4 provided on the outer wall side of the electric operation part 4 and a main drive shaft 5 made of a highly elastic material such as shaft steel, which is driven by a drive motor provided inside the electric operation part 4. 2. The polarity switch 3 is configured to perform tap switching by performing a tap switching operation based on a predetermined operation order. Reference numeral 10 denotes an abnormality detection device, which includes a torque detector 11 consisting of a temperature-compensated metal strain gauge, a semiconductor strain gauge, etc., installed at key points on the main drive shaft 5, and a torque detector 11 that detects an abnormal increase in torque. A setter 12 on the upper limit side that outputs an upper limit setting signal that instructs, a setter 15 on the lower limit side that outputs a lower limit setting signal that instructs the determination level of abnormal torque reduction, and an output electric signal of the torque detector 11 and the setter. When the output electrical signal exceeds the upper limit setting signal level in response to the output upper limit signal of No. 12, it is determined that there is a mechanical internal abnormality such as tap congestion due to galling in the load tap switching device, and the load tap switching is performed. An upper limit side determination unit 13 that issues a stop command signal for the tap switching operation of the device and an alarm command signal to the alarm 14, or either one of the command signals, and an output electric signal of the torque detector 11 and an output lower limit setting of the setting device 15. Upon receiving the signal, when the output electrical signal falls below the lower limit setting signal level, it is determined that an internal mechanical abnormality causing an abnormal decrease in torque, such as a breakage of the drive shaft, has occurred, and a stop command signal or alarm 18 is activated. and a lower limit side determination section 17 that outputs both or one of the alarm command signals. Reference numeral 16 denotes a time limit circuit such as a timer switch, which receives a start command signal from the electric operation section 4 for a predetermined period of time in order to prevent the lower limit side judgment section from malfunctioning in the low torque region during the one-tap switching operation period.
It is configured to pass the output lower limit setting signal of the t 2 period setter 15, which enters the high torque state after a t 1 delay, and the lower limit determination unit 17 outputs the output from the torque detector 1 during the t 2 period.
It is configured to issue a signal only when the output electrical signal of one falls below a lower limit setting signal level.
第２図は前述の実施例におけるトルク検出器の
出力電気信号および設定器の出力設定信号を示す
特性線図であり、曲線２１Ｗは主駆動軸５の定常
的な駆動トルクをこれに比例したトルク検出器１
１の出力電気信号レベルで表わした時刻t0を始発
点とする１タツプ切換動作期間ｔにおける経時変
化を、直線２２Ｗは上限側設定トルクを設定器１
２の出力上限設定信号レベルで、２６Ｗは下限側
設定トルクを時限回路１６の出力下限設定信号で
それぞれ示したものである。図において、時刻t0
で主駆動軸５が回動を開始すると、まず切換開閉
器１を開閉するための蓄勢装置のばねが巻き上げ
られて曲線２１Ｗの出力電気信号レベルは徐々に
上昇し、切換開閉器１が開閉する前にタツプ選択
器２の接触子がオフする際に生ずるレベルT1な
る第１のピークP1が現われる。さらに蓄勢が進
むと極性切換器３の接触子がオフするためのレベ
ルT2なる第２のピークP2が現われる。さらに蓄
勢が進むと極性切換器３の接触子が他側にオンす
るためのレベルT3なる第３のピークP3が現われ、
つぎにタツプ選択器２の接触子が他側にオンする
ためのレベルT4なるピークP4が現われ、最後に
蓄勢装置のばねが最大限T5レベルまで巻き上げ
られた時点で切換開閉器１が開閉し、タツプ切換
動作が完了することにより電気信号レベルはT5
から零レベルに一挙に低下する。 FIG. 2 is a characteristic diagram showing the output electric signal of the torque detector and the output setting signal of the setting device in the above-mentioned embodiment. Detector 1
The straight line 22W represents the change over time during the 1-tap switching operation period t starting at time t 0 expressed by the output electric signal level of 1.
In the output upper limit setting signal level of 2, 26W indicates the lower limit side setting torque with the output lower limit setting signal of the time limit circuit 16, respectively. In the figure, time t 0
When the main drive shaft 5 starts rotating, the spring of the energy storage device for opening and closing the switching switch 1 is wound up, and the output electric signal level of the curve 21W gradually increases, and the switching switch 1 opens and closes. Before this, a first peak P 1 appears, which is the level T 1 that occurs when the contact of the tap selector 2 turns off. As the energy storage progresses further, a second peak P 2 appears, which is a level T 2 at which the contact of the polarity switch 3 turns off. As the energy storage progresses further, a third peak P 3 appears, which is the level T 3 for turning on the contact of the polarity switch 3 to the other side.
Next, a peak P 4 at level T 4 appears for which the contact of the tap selector 2 turns on on the other side, and finally, when the spring of the energy storage device is wound up to the maximum level T 5 , the changeover switch 1 opens and closes, and the electrical signal level reaches T 5 when the tap switching operation is completed.
It drops to zero level all at once.
前述の説明のように負荷時タツプ切換装置が定
常的タツプ切換動作を繰返す状態においては、主
駆動軸に作用するトルクは曲線２１Ｗで表わされ
る径時変化を安定して繰返すことが発明者等の長
年の経験で明らかとなつており、かつ各接触子に
かじり等の機械的内部異常が発生した場合にはピ
ークP1，P2，P3，P4等のうちいずれかのレベル
が急増することが知られている。したがつて、上
限側設定器１２の出力上限設定信号レベルTuを
電気信号の最大レベルであるピークP3のレベル
T3の1.2ないし1.5倍程度に設定し、上限側判断部
１３により出力電気信号のピークP1ないしP4の
レベルT1ないしT4のいずれかが設定レベルTuを
超えたとき機械的内部異常があつたものと判断し
て負荷時タツプ切換装置のタツプ切換動作を直ち
に停止させる停止指令信号、警報指令信号の両方
あるいはいずれか一方を出力させるよう構成する
ことにより、機械的内部異常を早期に検知し、各
種接触子等の損傷の進展を未然に防止することが
できる。 The inventors believe that when the tap switching device under load repeats steady tap switching operations as described above, the torque acting on the main drive shaft stably repeats the radial change represented by curve 21W. It has become clear through many years of experience that when an internal mechanical abnormality such as galling occurs in each contact, the level of one of the peaks P 1 , P 2 , P 3 , P 4 , etc. increases rapidly. It is known. Therefore, the output upper limit setting signal level Tu of the upper limit setter 12 is set to the level of peak P 3 which is the maximum level of the electrical signal.
It is set to about 1.2 to 1.5 times T 3 , and when any of the peak levels T 1 to T 4 of the output electrical signal peak P 1 to P 4 exceeds the set level Tu by the upper limit judgment unit 13 , a mechanical internal abnormality is detected. By configuring the system to output a stop command signal and/or an alarm command signal that immediately stops the tap switching operation of the on-load tap switching device when it is determined that a This can be detected and the progress of damage to various contacts etc. can be prevented.
また、タツプ切換期間中に蓄勢装置や駆動軸の
切損、接触子の欠損などの機械的内部異常が発生
すると、主駆動軸は空転状態となり、曲線２１Ｗ
は零レベルにまで急速に低下する。そこで、機械
的ノイズ等で誤動作しない低度の低いレベルTL
に設定された下限側設定器１５の設定信号を時刻
t0からt1時間遅れてt2時間通過させる時限回路１
６を介して下限側判断部１７に加え、t2期間中に
曲線２１Ｗが零レベルにまで低下したとき、機械
的内部異常があつたものと判断して停止指令信
号、警報指令信号の両方またはいずれか一方を出
力するよう構成することにより、タツプ切換動作
の失敗と、これに基づく負荷時タツプ切換装置お
よび変圧器本体の電気的な損傷を未然に防止でき
る。 In addition, if an internal mechanical abnormality occurs during the tap switching period, such as breakage of the energy storage device or drive shaft, or loss of a contact, the main drive shaft will become idling, and the curve 21W
rapidly decreases to zero level. Therefore, a low level T L that does not malfunction due to mechanical noise etc.
The setting signal of the lower limit setter 15 set to
Time limit circuit 1 that passes from t 0 to t 2 hours with a delay of t 1 hour
When the curve 21W drops to the zero level during the period t2 , it is determined that a mechanical internal abnormality has occurred, and both the stop command signal and the alarm command signal are output. By configuring to output either one of them, it is possible to prevent a failure in the tap switching operation and electrical damage to the load tap switching device and the transformer main body due to the failure.
第３図は本考案の異なる実施例を説明するため
の電気信号および設定信号の経時変化特性線図で
あり、上限側設定器の出力設定信号レベルTuを
鎖線曲線３２Ｗで示すように、出力電気信号曲線
２１ＷにおけるピークP1，P2，P3，P4，P5のレ
ベルT1，T2，T3，T4，T5（第２図参照）それぞ
れの1.2ないし1.5倍になるよう、タツプ切換動作
期間ｔを５つの時間領域t3，t4，t5，t6，t7に区分
して階段状に変化させるようにした点が第２図で
示される前述の実施例と異なつている。したがつ
て、上述の状況を実現するための異常検出装置の
構成としては、各段階の上限設定信号を発する５
個の設定器と、各設定器の出力上限設定信号をt3
ないしt7期間通過させる時限回路と、それぞれの
設定器、時限回路に対応した５個の判断部とを設
けるよう構成することにより、負荷時タツプ切換
装置に機械的内部異常が生じたとき、異常トルク
上昇が負荷時タツプ切換装置のどの機構部分で生
じたかを標定することが可能となり、点検、修理
等の処置を適確かつ速かに実施できる利点が得ら
れる。 FIG. 3 is a time-varying characteristic diagram of electric signals and setting signals for explaining different embodiments of the present invention. The levels T 1 , T 2 , T 3 , T 4 , T 5 (see Figure 2) of the peaks P 1 , P 2 , P 3 , P 4 , P 5 in the signal curve 21W should be 1.2 to 1.5 times the respective levels. , is different from the above-described embodiment shown in FIG. 2 in that the tap switching operation period t is divided into five time regions t 3 , t 4 , t 5 , t 6 , and t 7 and changed stepwise. It's different. Therefore, the configuration of the abnormality detection device to realize the above situation is as follows:
setters and the output upper limit setting signal of each setter .
By providing a timer circuit that allows the tap to pass for 7 to 7 periods, and five judgment units corresponding to each setter and timer circuit, when a mechanical internal abnormality occurs in the on-load tap switching device, the abnormality is detected. It becomes possible to locate in which mechanical part of the load tap switching device the torque increase has occurred, and there is an advantage that measures such as inspection and repair can be carried out appropriately and quickly.
本考案は前述のように、負荷時タツプ切換装置
の主駆動軸の要所にトルク検出器を設けてタツプ
切換動作に伴なつて主駆動軸に作用する駆動トル
クを検出し電気信号に変換するとともに、この出
力電気信号の定常的なピーク値の1.2ないし1.5倍
の上限設定信号レベルを前記出力電気信号が超え
たとき、あるいは出力電気信号が低レベルの下限
設定信号レベル以下に低下したとき、負荷時タツ
プ切換装置に機械的内部異常が発生したものと判
断してタツプ切換動作の停止指令信号、警報指令
信号の両方またはいずれか一方の指令信号を発す
る設定器、時限回路、判断部を含む異常検出装置
を備えるよう構成した。その結果、負荷時タツプ
切換装置の機構部分のかじり等に起因する異常ト
ルク上昇を伴う機械的内部異常を駆動トルクが僅
かに上昇した時点で早期に検知することが可能に
なるとともに、機構部分の折損、欠損など異常ト
ルク低下を伴う機械的内部異常をも早期に検知で
きるので、配線用遮断器方式における内部異常の
検出感度、タツプ渋滞警報装置の検出遅れなど従
来技術における問題点が排除され、負荷時タツプ
切換装置の機械的損傷の進展ならびに電気的事故
への進展を阻止する機能を有する異常検出装置を
備えた負荷時タツプ切換装置を提供することがで
きる。また、タツプ切換動作によつて生ずる駆動
トルクの複数のピーク値の変化をそれぞれ監視す
るよう構成することも容易にできるので、機械的
内部異常の発生個所を容易に標定でき、したがつ
て点検、修理を容易化できる利点が得られる。
As mentioned above, the present invention installs a torque detector at key points on the main drive shaft of the tap switching device under load, detects the drive torque acting on the main drive shaft during tap switching operation, and converts it into an electrical signal. and when the output electrical signal exceeds an upper limit setting signal level of 1.2 to 1.5 times the steady peak value of this output electrical signal, or when the output electrical signal decreases below the lower limit setting signal level of the low level, Includes a setting device, a timer circuit, and a judgment unit that determines that a mechanical internal abnormality has occurred in the tap switching device under load and issues a stop command signal and/or an alarm command signal for the tap switching operation. It was configured to include an anomaly detection device. As a result, it becomes possible to detect internal mechanical abnormalities that are accompanied by an abnormal increase in torque due to galling of the mechanical part of the tap changer under load at an early stage when the drive torque slightly increases, and also to Since it is possible to detect mechanical internal abnormalities such as breakage, chipping, etc. that are accompanied by abnormal torque reduction at an early stage, problems with conventional technology such as the internal abnormality detection sensitivity of the molded circuit breaker system and the detection delay of the tap traffic jam warning system are eliminated. It is possible to provide an on-load tap switching device that is equipped with an abnormality detection device that has the function of preventing the progress of mechanical damage to the on-load tap switching device and the development of an electrical accident. In addition, it can be easily configured to monitor changes in multiple peak values of drive torque caused by tap switching operations, making it easy to locate the location of internal mechanical abnormalities and, therefore, perform inspections and This has the advantage of making repairs easier.
第１図は本考案の実施例装置を示す構成図、第
２図は実施例における信号特性線図、第３図は異
なる実施例を説明するための信号特性線図であ
る。
１……切換開閉器、２……タツプ選択器、３…
…極性切換器、４……電動操作部、５……主駆動
軸、９……変圧器本体タンク、１０……異常検出
装置、１１……トルク検出器、１２……上限設定
器、１３……上限判断部、１５，１８……警報
機、１５……下限設定器、１６……時限回路、１
７……下限判断部、P1，P2，P3，P4，P5……駆
動トルク（出力電気信号）のピーク、T1，T2，
T3，T4，T5……ピークの電気信号レベル、Tu…
…上限設定信号レベル、TL……下限設定信号レ
ベル、Ｔ……タツプ切換動作期間、t2，t3，t4，
t5，t6，t7……判断期間領域。
FIG. 1 is a block diagram showing a device according to an embodiment of the present invention, FIG. 2 is a signal characteristic diagram in the embodiment, and FIG. 3 is a signal characteristic diagram for explaining a different embodiment. 1...Switching switch, 2...Tap selector, 3...
...Polarity switch, 4...Electric operation unit, 5...Main drive shaft, 9...Transformer body tank, 10...Abnormality detection device, 11...Torque detector, 12...Upper limit setter, 13... ... Upper limit judgment section, 15, 18 ... Alarm, 15 ... Lower limit setting device, 16 ... Time limit circuit, 1
7... Lower limit judgment section, P 1 , P 2 , P 3 , P 4 , P 5 ... Peak of drive torque (output electrical signal), T 1 , T 2 ,
T 3 , T 4 , T 5 ...Peak electrical signal level, Tu...
... Upper limit setting signal level, T L ... Lower limit setting signal level, T ... Tap switching operation period, t 2 , t 3 , t 4 ,
t5 , t6 , t7 ...Judgment period area.
Claims (1)
器、タツプ選択器、極性切換器等と、前記本体
タンクの外壁側に設けられた電動操作部と、こ
の電動操作部と前記開閉器等とを連結する主駆
動軸とを備えたものにおいて、前記駆動軸に取
付けられタツプ切換操作時に駆動軸に作用する
トルクを検知して電気信号に変換出力するトル
ク検出器と、トルクの異常上昇の判定レベルお
よび異常低下の判定レベルを指示する上限およ
び下限設定信号の電気信号を出力する設定器
と、前記電動操作部の作動開始後の所定時間経
過後前記トルク検出器の出力電気信号が前記上
限および下限設定信号レベルから外れたとき前
記開閉器等に異常があつたもの判断して遮断指
令信号、警報指令信号の少なくとも一方を出力
する判断部とからなる異常検出装置を備えたこ
とを特徴とする負荷時タツプ切換装置。 ２） 実用新案登録請求の範囲第１項記載のもの
において、異常検出装置が電動操作部からの始
動信号を受けて所定時間遅れて下限側設定器の
出力設定信号を所定時間通過させる時限回路を
備えたことを特徴とする負荷時タツプ切換装
置。 ３） 実用新案登録請求の範囲第１項記載のもの
において、上限側設定器がトルク検出器が通常
発する出力電気信号の最大値の1.2ないし1.5倍
に相応する上限設定信号を発するものであるこ
とを特徴とする負荷時タツプ切換装置。 ４） 実用新案登録請求の範囲第１項または第３
項記載のものにおいて、上限側設定器がトルク
検出器が通常発する出力電気信号のピーク値そ
れぞれの1.2ないし1.5倍に相応する上限設定信
号を発する複数台からなり、前記ピーク値それ
ぞれの発生時間領域にのみ前記上限設定信号を
通過させる時限回路を備えたことを特徴とする
負荷時タツプ切換装置。[Scope of Claim for Utility Model Registration] 1) A switching switch, a tap selector, a polarity switch, etc. installed in the main tank of the transformer, an electric operation part installed on the outer wall side of the main tank, and In a device equipped with a main drive shaft that connects an operating part and the switch, etc., a torque detector is attached to the drive shaft and detects the torque acting on the drive shaft during a tap switching operation, converts it into an electrical signal, and outputs the detected torque. a setting device that outputs electric signals of upper and lower limit setting signals that instruct a determination level of an abnormal increase in torque and a determination level of an abnormal decrease in torque, and the torque detector after a predetermined period of time has elapsed after the start of operation of the electric operation section. an abnormality detection device comprising a determination unit that determines that there is an abnormality in the switch or the like when the output electrical signal of the switch deviates from the upper and lower limit set signal levels, and outputs at least one of a shutoff command signal and an alarm command signal; An on-load tap switching device characterized by comprising: 2) Utility model registration Claim In the item described in claim 1, the abnormality detection device includes a time limit circuit that receives a starting signal from the electric operation part and causes the output setting signal of the lower limit side setter to pass for a predetermined time after a predetermined time delay. An on-load tap switching device characterized by comprising: 3) In the utility model registration claim described in paragraph 1, the upper limit setting device emits an upper limit setting signal corresponding to 1.2 to 1.5 times the maximum value of the output electric signal normally emitted by the torque detector. An on-load tap switching device characterized by: 4) Scope of claims for utility model registration, paragraph 1 or 3
In the device described in 1., the upper limit setter consists of multiple units that emit upper limit setting signals corresponding to 1.2 to 1.5 times the peak value of the output electrical signal normally emitted by the torque detector, and A load-on tap switching device characterized by comprising a timer circuit that allows the upper limit setting signal to pass only when the load is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986061996U JPH0516846Y2 (en) | 1986-04-24 | 1986-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986061996U JPH0516846Y2 (en) | 1986-04-24 | 1986-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62177240U JPS62177240U (en) | 1987-11-11 |
| JPH0516846Y2 true JPH0516846Y2 (en) | 1993-05-06 |
Family
ID=30895845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986061996U Expired - Lifetime JPH0516846Y2 (en) | 1986-04-24 | 1986-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516846Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2559138B2 (en) * | 1989-02-14 | 1996-12-04 | 株式会社日立製作所 | Load tap changer, operation monitoring system thereof, and operation monitoring method thereof |
| JP2695526B2 (en) * | 1990-11-28 | 1997-12-24 | 株式会社日立製作所 | Drive system abnormality diagnosis system for load tap changer |
| DE102012103736A1 (en) * | 2012-04-27 | 2013-10-31 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring the operation of a tap changer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223619A (en) * | 1975-08-15 | 1977-02-22 | Hitachi Ltd | Performance monitoring system for tap change-over switch |
| JPS60176213A (en) * | 1984-02-23 | 1985-09-10 | Toshiba Corp | On-load tap changer |
-
1986
- 1986-04-24 JP JP1986061996U patent/JPH0516846Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223619A (en) * | 1975-08-15 | 1977-02-22 | Hitachi Ltd | Performance monitoring system for tap change-over switch |
| JPS60176213A (en) * | 1984-02-23 | 1985-09-10 | Toshiba Corp | On-load tap changer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62177240U (en) | 1987-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6297640B1 (en) | Transfer switch position sensing using coil control contacts | |
| JPH03219165A (en) | Shift indicating device for automatic transmission | |
| JP2008019872A (en) | Method and device for controlling contactor for starter of automobile | |
| EP1320708B1 (en) | Ice producing machine and method with gear motor monitoring | |
| KR19990087417A (en) | Method and circuit for testing the electrical actuator drive stage | |
| US5638247A (en) | Circuit configuration for monitoring a plurality of coils | |
| JPH0516846Y2 (en) | ||
| US4025836A (en) | Protective system against commutation failure in a chopper circuit | |
| JP5004520B2 (en) | Lockout device operation monitoring device, disconnector, and lockout device operation monitoring method | |
| JP2774907B2 (en) | Electric vehicle control device | |
| JP3167110B2 (en) | Keyless engine starter characterized by the function of monitoring welding of relay contacts | |
| JPH0439764B2 (en) | ||
| US5735130A (en) | Ice removal motor control circuit and method for an automatic ice maker | |
| JPH02281718A (en) | Automated monitoring device in tap switching device upon in loading | |
| JP2617906B2 (en) | Transformer operation monitoring device | |
| JPH084631Y2 (en) | Circuit breaker control current sensor inspection circuit | |
| KR100373036B1 (en) | Apparatus for fail mode controlled of inhibitor switch and method thereof | |
| JPH081860B2 (en) | Load tap changer | |
| GB2165109A (en) | Stop-lamp circuit failure detection system | |
| JPH08196098A (en) | Motor driver | |
| RU2022652C1 (en) | Device for adjusting unload of heavy fraction away from jigging machine | |
| JPH06209593A (en) | Secondary resistor monitor apparatus | |
| JP2517446Y2 (en) | Air source device protection circuit | |
| KR200143076Y1 (en) | Low-voltage detect circuit for battery power of a car | |
| JPH0837720A (en) | Automatic safety circuit breaker |