JPH0439764B2 - - Google Patents
Info
- Publication number
- JPH0439764B2 JPH0439764B2 JP3140884A JP3140884A JPH0439764B2 JP H0439764 B2 JPH0439764 B2 JP H0439764B2 JP 3140884 A JP3140884 A JP 3140884A JP 3140884 A JP3140884 A JP 3140884A JP H0439764 B2 JPH0439764 B2 JP H0439764B2
- Authority
- JP
- Japan
- Prior art keywords
- torque
- switching
- load tap
- tap changer
- load
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 22
- 230000005856 abnormality Effects 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H2009/0061—Monitoring tap change switching devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は負荷時タツプ切換装置に係り、特に負
荷時タツプ切換器を電動操作機構によつて操作す
る際の異常検出手段の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an on-load tap changer, and more particularly to an improvement in abnormality detection means when the on-load tap changer is operated by an electric operating mechanism.
一般に負荷時タツプ切換装置は負荷時タツプ切
換器と電動操作機構部から構成され、送配電系の
負荷が変動した場合、変動に対応した電圧変化が
一定値以上になつた時切換信号を負荷時タツプ切
換器の切換信号発生部で作成し、電動操作機構を
駆動することにより負荷時タツプ切換変圧器に設
けられているタツプを切換え、送配電系統の電圧
を一定に保つている。
In general, an on-load tap switching device consists of an on-load tap switching device and an electric operation mechanism. When the load in the power transmission and distribution system fluctuates, a switching signal is sent to the load when the voltage change corresponding to the fluctuation exceeds a certain value. A switching signal is generated by the switching signal generator of the tap changer and drives an electric operating mechanism to switch the taps in the tap changer transformer during load, keeping the voltage of the power transmission and distribution system constant.
この送配電系統は主幹線である場合が多く、負
荷時タツプ切換装置が故障した場合、広範囲にわ
たつて停電するおそれがある。 This power transmission and distribution system is often the main line, and if the on-load tap switching device fails, there is a risk of widespread power outage.
従来、負荷時タツプ切換装置の故障検出は、負
荷時タツプ切換器の内部で発生するアークで、絶
縁油が分解し、多量のガスが発生することによる
油流を検出するもの、負荷時タツプ切換変圧器に
流れる電流を変流器で測定しタツプ間短絡を検出
するもの、負荷時タツプ切換装置の切換信号発生
部で切換時間を計測し、正規タツプ切換時間と比
較することによりタツプ渋滞の有無を検出するも
の等が考えられている。 Conventionally, fault detection for on-load tap changers involves detecting oil flow caused by arcing generated inside the on-load tap changer, which causes the insulating oil to decompose and generate a large amount of gas; The current flowing through the transformer is measured with a current transformer to detect short circuits between taps, and the switching time is measured by the switching signal generator of the tap switching device under load, and the presence or absence of tap congestion is determined by comparing it with the regular tap switching time. Detection methods are being considered.
しかしながら、従来のものは、負荷時タツプ切
換器の内部に生じた絶縁破壊、アーク現象、タツ
プ間短絡などの事故が起つたことは検出できる
が、故障の兆候を事前に検出できなかつた。ま
た、タツプ渋滞の検出は正規タツプ切換時間と比
較する方式のため、タツプ渋滞の判定に５秒以上
の時間が必要であり、応答の早い判定ができなか
つたなど解決すべき問題点があつた。 However, although conventional devices can detect accidents such as dielectric breakdown, arcing, and short circuits between taps that occur inside the load tap changer, they cannot detect signs of failure in advance. In addition, because the detection of tap congestion is based on a comparison method with the regular tap switching time, it takes more than 5 seconds to determine tap congestion, and there are problems that need to be resolved, such as the inability to make quick response judgments. .
〔発明の目的〕
本発明は上記の点を考慮してなされたもので、
その目的とするところは、負荷時タツプ切換器の
故障の兆候を検出し、重大事故を未然に防ぐ異常
検出装置を備えた負荷時タツプ切換装置を提供す
ることにある。[Object of the invention] The present invention has been made in consideration of the above points, and
The purpose is to provide an on-load tap changer equipped with an abnormality detection device that detects signs of failure of the on-load tap changer and prevents serious accidents.
かかる目的を達成するために本発明によれば、
負荷時タツプ切換器のトルク特性パターンと正常
切換時に発生する動作時のトルク特性パターンと
の比較、すなわち動作時のトルクの大きさ及びト
ルクの発生時間の間隔を比較して、事前に故障の
兆候を検出する異常検出装置を設けたことを特徴
とする。
According to the present invention, in order to achieve such an objective,
Comparing the torque characteristic pattern of the tap changer under load with the torque characteristic pattern during operation that occurs during normal switching, that is, comparing the magnitude of torque during operation and the interval between torque generation times, can detect signs of failure in advance. The present invention is characterized in that it is equipped with an abnormality detection device that detects.
以下本発明の負荷時タツプ切換装置の一実施例
を第１図ないし第３図を参照して説明する。負荷
時タツプ切換装置は、負荷時タツプ切換と、切換
信号発生部の切換信号により負荷時タツプ切換器
を操作する電動操作機構部と、負荷時タツプ切換
器の異常を検出する異常検出装置とから構成され
る。異常検出装置は、切換信号発生部１の切換信
号を検出する切換検出部４と、この切換検出部４
が切換信号を検出することによつて動作する電動
操作機構部２により駆動される負荷時タツプ切換
器３の駆動軸のトルクを検出するトルク検出部５
と、正常な切換動作時の正常トルク特性パターン
を記憶する記憶回路部７と、この正常トルク特性
パターンと動作時のトルク特性パターンとを演算
比較して異常か否かを判定する異常判定部６と、
この異常判定部６に接続した異常表示部８とから
構成される。
An embodiment of the on-load tap switching device of the present invention will be described below with reference to FIGS. 1 to 3. The on-load tap changer is comprised of an on-load tap changer, an electric operating mechanism section that operates the on-load tap changer based on a switching signal from a switching signal generator, and an abnormality detection device that detects an abnormality in the on-load tap changer. configured. The abnormality detection device includes a switching detection section 4 that detects the switching signal of the switching signal generation section 1, and this switching detection section 4.
a torque detection section 5 that detects the torque of the drive shaft of the on-load tap changer 3 driven by the electric operation mechanism section 2 which is operated by detecting a switching signal;
, a memory circuit unit 7 that stores a normal torque characteristic pattern during normal switching operation, and an abnormality determination unit 6 that calculates and compares this normal torque characteristic pattern with the torque characteristic pattern during operation to determine whether or not there is an abnormality. and,
It is composed of an abnormality display section 8 connected to this abnormality determination section 6.
次に本発明の動作について説明する。切換信号
発生部１から切換信号が出力されると、切換検出
部４は切換開始の信号を検出し、異常判定部６に
その検出信号を送付する。一方切換信号発生部１
から出力される切換信号により電動操作機構部２
の電動機（図示しない）が駆動を開始し、電動操
作機構部２と機械的に結合した負荷時タツプ切換
器３は動作を開始し、駆動軸（図示しない）にト
ルクが加わる。トルク検出部５は負荷時タツプ切
換器３の駆動軸に加わるトルクを検出し、異常判
定部６にその検出信号を送付する。 Next, the operation of the present invention will be explained. When a switching signal is output from the switching signal generating section 1, the switching detecting section 4 detects a switching start signal and sends the detection signal to the abnormality determining section 6. On the other hand, switching signal generator 1
Electric operation mechanism section 2
The electric motor (not shown) starts driving, the on-load tap changer 3 mechanically connected to the electric operating mechanism section 2 starts operating, and torque is applied to the drive shaft (not shown). The torque detection section 5 detects the torque applied to the drive shaft of the load tap changer 3, and sends a detection signal to the abnormality determination section 6.
ところで、一般に負荷時タツプ切換装置が正常
に１タツプの切換を終了する場合には、第２図に
示すように縦軸にトルクをとり横軸に時間をと
り、負荷時タツプ切換器３のトルクと時間との関
係、すなわち正常時のトルク特性パターンを線図
に示す。この第２図に示すように負荷時タツプ切
換器３のトルクは定常トルクと、主切換器オフに
おける時間t2と主切換器オンの時間t5との間の主
切換器動作のトルクが加わる。 By the way, generally when the on-load tap changer normally completes one tap change, as shown in FIG. 2, the vertical axis represents the torque and the horizontal axis represents the time, and the torque of the on-load tap changer 3 The diagram shows the relationship between time and torque, that is, the torque characteristic pattern under normal conditions. As shown in Fig. 2, the torque of the tap changer 3 under load includes the steady torque and the torque of the main switch operation between time t 2 when the main switch is off and time t 5 when the main switch is on. .
また第３図に示すように、縦軸にトルクをとり
横軸に時間をとり、副切換器が動作する時におけ
る負荷時タツプ切換器３のトルクと時間との関
係、すなわち、正常トルク特性パターンを線図に
示す。第３図に示すように副切換器動作時におけ
る正常トルク特性パターンは、第２図に示した正
常トルク副切換器オン、オフのトルクが重畳され
たトルク特性パターンとなる。このような両正常
トルク特性パターンは記憶回路部７に正常切換時
に発生するパターン、すなわちトルクの発生時間
とトルク値が記憶される。そして異常判定部６は
負荷時タツプ切換器３が１タツプを切換える際に
発生するトルク特性パターンと、記憶回路部７に
記憶されている正常切換時に発生する正常トルク
特性パターン、すなわちトルクの発生時間とトル
ク値とを比較し、切換時のトルク特性パターンと
正常トルク特性パターンとの差異から故障の兆候
及び故障を判定し、表示回路８に信号を出力する
ように動作する。 Further, as shown in Fig. 3, the vertical axis represents torque and the horizontal axis represents time, and the relationship between the torque and time of the tap changer 3 under load when the auxiliary changeover operates, that is, the normal torque characteristic pattern. is shown in the diagram. As shown in FIG. 3, the normal torque characteristic pattern when the sub-switcher is in operation is a torque characteristic pattern in which the normal torque sub-switcher ON and OFF torques shown in FIG. 2 are superimposed. These two normal torque characteristic patterns are stored in the memory circuit section 7 as a pattern that occurs during normal switching, that is, a torque generation time and a torque value. The abnormality determination unit 6 determines the torque characteristic pattern generated when the load tap changer 3 switches one tap and the normal torque characteristic pattern generated during normal switching stored in the memory circuit unit 7, that is, the torque generation time. and the torque value, and determines a sign of failure and a failure based on the difference between the torque characteristic pattern at the time of switching and the normal torque characteristic pattern, and outputs a signal to the display circuit 8.
次に１タツプを切換える際に発生するトルクか
ら故障の兆候及び故障を検出する一例について説
明する。 Next, an example of detecting failure symptoms and failures from the torque generated when switching one tap will be described.
(i) 負荷時タツプ切換器はJEC−186に規定され
ているように80万回の機械的寿命が要求されて
おり、摺動部分が摩耗することにより、トルク
が経年変化により除々に増加する。異常判定器
６は切換時のトルクが正常切換時のトルクの２
倍以上になつた場合、故障の兆候と判定し、点
検の必要性を表示する。(i) As stipulated in JEC-186, a load tap changer is required to have a mechanical life of 800,000 operations, and as the sliding parts wear out, the torque gradually increases over time. . Abnormality determiner 6 indicates that the torque at switching is 2 times the torque at normal switching.
If it doubles or more, it is determined to be a sign of failure and indicates the need for inspection.
(ii) タツプ切換中にトルクが正常切換時の５倍以
上、又はトルク発生時間間隔t2−t1、t3−t2、
…t6−t5が正常切換時の時間間隔の1.5倍以上の
場合負荷時タツプ切換器の可動接点の溶着又は
摺動部材のかじり現象などの故障と判定し、電
動操作機構部２のトリツプ又は故障表示を行
う。(ii) Torque during tap switching is 5 times or more than normal switching, or torque generation time interval t 2 - t 1 , t 3 - t 2 ,
...If t 6 - t 5 is more than 1.5 times the time interval during normal switching, it is determined that there is a failure such as welding of the movable contacts of the tap changer or galling of the sliding member during load, and the electric operation mechanism section 2 is tripped. Or display a malfunction.
そして上記のように本発明によれば次のような
効果が得られる。 As described above, according to the present invention, the following effects can be obtained.
負荷時タツプ切換器３のトルクの発生時間間
隔とトルク値とを正常トルク特性パターンと比
較することにより、経年変化が判定でき故障の
事前にその兆候を検出することができる。 By comparing the torque generation time interval and torque value of the on-load tap changer 3 with the normal torque characteristic pattern, it is possible to determine aging and detect signs of failure in advance.
負荷時タツプ切換器３の可動接点の溶着や摺
動部材のかじりなどによる過大トルクを検出し
ているので、過大負荷に起因するタツプ渋滞を
検出できる。 Since excessive torque due to welding of the movable contacts of the tap changer 3 or galling of the sliding members during load is detected, tap jam caused by excessive load can be detected.
トルクを検出し、正常切換時の正常トルク特
性パターンと比較しているので、故障の兆候す
なわち事故の事前に短時間で判定できる。 Since the torque is detected and compared with the normal torque characteristic pattern during normal switching, it is possible to determine the signs of a failure in advance of an accident in a short period of time.
以上説明したように本発明によれば、負荷時タ
ツプ切換器が１タツプ切換中に発生するトルクの
発生時間間隔とトルク値とを正常なタツプ切換時
の正常トルク特性パターンと比較することによ
り、故障の兆候を検出し、重大事故を未然に防ぐ
ことができる異常検出部を設けた負荷時タツプ切
換装置を提供することができる。
As explained above, according to the present invention, by comparing the torque generation time interval and torque value generated during one tap change by the on-load tap changer with the normal torque characteristic pattern during normal tap change, It is possible to provide an on-load tap switching device that is equipped with an abnormality detection section that can detect signs of failure and prevent serious accidents.
第１図は本発明の負荷時タツプ切換装置のブロ
ツク図、第２図第３図はそれぞれ本発明の負荷時
タツプ切換装置の正常トルク特性パターンを示す
特性線図である。
１…切換信号発生部、２…電動操作機構部、３
…負荷時タツプ切換器、４…切換検出部、５…ト
ルク検出部、６…異常検出部、７…記憶回路部、
８…異常表示部。
FIG. 1 is a block diagram of the on-load tap switching device of the present invention, and FIG. 2, FIG. 3 are characteristic diagrams showing normal torque characteristic patterns of the on-load tap switching device of the present invention. 1... Switching signal generation section, 2... Electric operation mechanism section, 3
...Tap changer under load, 4...Switching detection section, 5...Torque detection section, 6...Abnormality detection section, 7...Storage circuit section,
8...Abnormality display section.
Claims (1)
信号により電動操作機構部によつて操作する負荷
時タツプ切換装置において、電動操作機構部を介
して負荷時タツプ切換器を操作する切換信号を検
出する切換検出部と、この切換検出部が切換信号
を検出すると同時に前記負荷時タツプ切換器のト
ルクを検出するトルク検出部と、このトルク検出
部により検出した前記負荷時タツプ切換器の正常
動作時の正常トルク特性パターンを記憶する記憶
回路部と、この記憶回路部に記憶した正常トルク
特性パターンと動作時のトルク特性パターンとを
比較して異常を判定する異常判定部とからなる異
常検出装置を設けたことを特徴とする負荷時タツ
プ切換装置。1. In an on-load tap switching device that operates an on-load tap changer using a switching signal from a switching signal generating section using an electric operating mechanism, a switching signal that operates the on-load tap switching device is detected via the electric operating mechanism. a torque detection section that detects the torque of the on-load tap changer at the same time as this switching detection section detects a switching signal; and a torque detection section that detects the torque of the on-load tap changer when the on-load tap changer is operating normally An abnormality detection device comprising: a memory circuit unit that stores a normal torque characteristic pattern of An on-load tap switching device characterized by being provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3140884A JPS60176213A (en) | 1984-02-23 | 1984-02-23 | On-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3140884A JPS60176213A (en) | 1984-02-23 | 1984-02-23 | On-load tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60176213A JPS60176213A (en) | 1985-09-10 |
| JPH0439764B2 true JPH0439764B2 (en) | 1992-06-30 |
Family
ID=12330431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3140884A Granted JPS60176213A (en) | 1984-02-23 | 1984-02-23 | On-load tap changer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60176213A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516846Y2 (en) * | 1986-04-24 | 1993-05-06 | ||
| 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 |
| DE19744465C1 (en) * | 1997-10-08 | 1999-03-11 | Reinhausen Maschf Scheubeck | Means for regulation of a multi-contact switch for tapped transformer |
| DE19746574C1 (en) * | 1997-10-22 | 1999-02-04 | Reinhausen Maschf Scheubeck | Method of functional monitoring of step switches |
| DE19907834C1 (en) | 1999-02-24 | 2000-05-18 | Reinhausen Maschf Scheubeck | Monitoring method for step switches involves selecting characteristic motor torque values for identical times in two switching processes, and comparing corresponding switch torques with limits |
| US7724152B2 (en) * | 2005-05-09 | 2010-05-25 | Mitsubishi Electric Corporation | Tap change operation monitoring apparatus for on-load tap charger |
| BR112013025007B1 (en) | 2011-03-27 | 2021-05-25 | Abb Schweiz Ag | tap switch with an improved monitoring system |
| CN103563032B (en) | 2011-03-27 | 2017-05-10 | Abb技术有限公司 | Tap changer with an improved drive system |
| DE102011112365B3 (en) * | 2011-09-02 | 2012-12-27 | Maschinenfabrik Reinhausen Gmbh | Tap-changer with worm gear |
| DE102011112748B3 (en) * | 2011-09-07 | 2012-12-27 | Maschinenfabrik Reinhausen Gmbh | Motor drive for actuating a tap changer |
| DE102012103736A1 (en) * | 2012-04-27 | 2013-10-31 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring the operation of a tap changer |
-
1984
- 1984-02-23 JP JP3140884A patent/JPS60176213A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60176213A (en) | 1985-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |