JPH0814596B2 - Winding abnormality determination method for electric equipment having windings - Google Patents
Winding abnormality determination method for electric equipment having windingsInfo
- Publication number
- JPH0814596B2 JPH0814596B2 JP62152274A JP15227487A JPH0814596B2 JP H0814596 B2 JPH0814596 B2 JP H0814596B2 JP 62152274 A JP62152274 A JP 62152274A JP 15227487 A JP15227487 A JP 15227487A JP H0814596 B2 JPH0814596 B2 JP H0814596B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- current
- abnormality determination
- coil
- windings
- 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
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電動機など巻線を有する電気機器に対し、
機器を分解することなく、巻線の層間短絡を簡便に判定
するための診断方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an electric device having a winding such as an electric motor,
The present invention relates to a diagnostic method for easily determining an interlayer short circuit of a winding without disassembling the device.
電気機器の巻線の層間短絡は機器焼損や機器動作異常
などの事故につながる。この層間短絡を見つける方法と
して従来から機器に流れる電流を計器で監視し、波形や
値の異常から判定する方法や、抵抗を計る方法がある。Interlayer short-circuits between windings of electrical equipment lead to accidents such as equipment burnout and equipment malfunction. As a method of detecting this interlayer short circuit, conventionally, there is a method of monitoring a current flowing through a device with a meter and determining from an abnormality of a waveform or a value, or a method of measuring resistance.
これら従来の方法では、全ての機器に対し正常値を把
握しておかなければならず、また、短絡量が少ないと判
定がしにくいなどの問題があるため、異常と思われる機
器に対しては分解チェックするという方法しかよい手段
がない。In these conventional methods, it is necessary to know the normal values for all the devices, and there is a problem that it is difficult to determine if the short circuit amount is small, so for devices that are considered to be abnormal The only way to check the disassembly is.
本発明は、上記のような従来方法の欠点を排除し、異
常状況を簡便に、定量的に判定することを目的とするも
のである。An object of the present invention is to eliminate the above-mentioned drawbacks of the conventional method and simply and quantitatively determine an abnormal situation.
〔問題点を解決するための手段〕 本発明は、巻線を有する電気機器の巻線異常を判定す
る方法において、被判定巻線に所定の一定電圧を与え、
巻線に発生する電流の波形形状より巻線の層間短絡を判
定するものである。以下、図面にもとづいて説明する。[Means for Solving Problems] The present invention provides a method for determining a winding abnormality of an electric device having a winding, applying a predetermined constant voltage to a winding to be determined,
The interlayer short circuit of the winding is determined from the waveform shape of the current generated in the winding. Hereinafter, description will be given based on the drawings.
第１図は本発明の判定原理を説明する図であり抵抗
rf,リアクタンスLfを有する巻線１に直流電圧Ｅを発生
する電源とスイッチSWを有する電源装置２からステップ
信号を与えると、巻線１に電流ifが流れる。電流ifは、
巻線１が短絡しない場合、第２図に見られるような一次
遅れの波形となる。また、この時の電流特性は、（１）
式のように表わせる。FIG. 1 is a diagram for explaining the determination principle of the present invention
When a step signal is applied to the winding 1 having r f and reactance L f from the power supply generating the DC voltage E and the power supply device 2 having the switch SW, a current i f flows through the winding 1. The current i f is
When the winding 1 is not short-circuited, the waveform has a first-order lag as shown in FIG. The current characteristics at this time are (1)
It can be expressed as a formula.
しかし、巻線１に第１図のア−イのような破線で示す
短絡が発生すると、第３図の等価回路で見られるように
短絡部のコイル３には電磁誘導作用により、短絡外のコ
イル４に流れる電流iS1と同じ電流が流れる。そのた
め、短絡部のコイル３と短絡外のコイル４との間では相
互誘導作用にＭ結合が生じ、巻線１に流れる電流if1は
第４図のようにステップ状に立上る現象が現われる。こ
のときの巻線１に流れる電流ifとステップ状に立上る電
流i0は各々、（２）、（３）式で示される。 However, when a short circuit indicated by a broken line such as ai in FIG. 1 occurs in the winding 1, as shown in the equivalent circuit in FIG. The same current as the current i S1 flowing through the coil 4 flows. Therefore, M coupling occurs in the mutual induction between the coil 3 in the short-circuited portion and the coil 4 outside the short-circuited portion, and the current i f1 flowing in the winding 1 rises stepwise as shown in FIG. At this time, the current if flowing in the winding 1 and the current i 0 rising in steps are expressed by equations (2) and (3), respectively.
但し、r1,L1は短絡外の抵抗およびインダクタンス r2,L2は短絡部の抵抗およびインダクタンスで r1＋r2＝rf ……（４） L1＋L2＝Lf ……（５） 巻線１に流れる電流if1とステップ状に立上る電流i0
と抵抗rfとリアクタンスLfがわかれば、（２）、
（３）、（４）、（５）式よりr1,r2,L1,L2が求められ
る。 Where r 1 and L 1 are the resistance and inductance outside the short circuit r 2 and L 2 are the resistance and inductance at the short circuit part r 1 + r 2 = rf (4) L 1 + L 2 = Lf (5) Current i f1 flowing in line 1 and current i 0 rising in steps
If the resistance r f and the reactance L f are known, (2),
From the expressions (3), (4) and (5), r 1 , r 2 , L 1 and L 2 are obtained.
本発明は上記のように、一定電圧Ｅを付加してステッ
プ状に立上る電流i0を検出すれば、電気機器の巻線が短
絡していると判断でき、かつ短絡している箇所は、
（２）、（３）、（４）、（５）式よりr1,r2,L1,L2を
求め、r1とr2の比より見つける。As described above, according to the present invention, if the constant voltage E is applied and the current i 0 rising in steps is detected, it can be determined that the winding of the electric device is short-circuited, and the short-circuited portion is
From the equations (2), (3), (4) and (5), r 1 , r 2 , L 1 and L 2 are obtained and found from the ratio of r 1 and r 2 .
第５図は実施例を示す検出装置である。 FIG. 5 shows a detection device showing an embodiment.
負荷電源装置５から電源を供給されているコイル１を
判定する場合、コイル１と電源装置５をコイル端子部J,
Kで切離し、コイル側端子J,Kに巻線異常判定装置６から
の試験線９を接続する。巻線異常判定装置６は、ステッ
プ状の試験信号を与える信号発生部７と試験線９に流れ
る電流を測定，記録，並びに良否の判定をする異常判定
部８とから構成される。When determining the coil 1 that is being supplied with power from the load power supply device 5, the coil 1 and the power supply device 5 are connected to the coil terminal J,
Disconnect at K, and connect the test line 9 from the winding abnormality determination device 6 to the coil side terminals J and K. The winding abnormality judging device 6 is composed of a signal generating section 7 which gives a stepwise test signal and an abnormality judging section 8 which measures and records the current flowing through the test line 9 and judges whether it is good or bad.
被試験コイル１に試験線９を接続後、巻線異常判定装
置６のパネル面上の測定スイッチ10をONする。その信号
は、信号発生部７と異常判定部８に送られ、両制御部は
測定待機状態となる。その後、信号発生部７は異常判定
部８に試験信号伝送用意信号を送り、異常判定部８では
その信号を基に測定状態になる。異常判定部８では、測
定開始可信号を信号発生部７に送り、その信号で試験信
号であるステップ信号を被試験コイルに伝送する。異常
判定部８は、マイコンなどの演算装置と記録計から構成
されており、巻線１に流れる電流if1とステップ状に立
上る電流i0、および抵抗rfとリアクタンスLfより、r1,r
2,L1,L2を求め、ひいては短絡箇所r1/r2を求める。After connecting the test wire 9 to the coil under test 1, the measurement switch 10 on the panel surface of the winding abnormality determination device 6 is turned on. The signal is sent to the signal generation section 7 and the abnormality determination section 8, and both control sections enter the measurement standby state. After that, the signal generator 7 sends a test signal transmission preparation signal to the abnormality determiner 8, and the abnormality determiner 8 enters the measurement state based on the signal. The abnormality determining section 8 sends a measurement start enable signal to the signal generating section 7 and transmits a step signal, which is a test signal, to the coil under test. The abnormality determination unit 8 is composed of an arithmetic unit such as a microcomputer and a recorder, and uses the current i f1 flowing in the winding 1 and the current i 0 rising in steps, and the resistance r f and reactance L f to determine r 1 , r
2 , L 1 , L 2 are calculated, and then the short-circuited part r 1 / r 2 is calculated.
以上、詳細に説明したように、本発明の方法により異
常と判定しかねる機器の異常状況を定量的に簡便に判定
することが可能となり、分解判定などの煩雑な作業が不
必要となった。As described in detail above, the method of the present invention makes it possible to quantitatively and easily determine an abnormal situation of a device that could not be determined to be abnormal, and a complicated work such as disassembly determination is unnecessary.
第１図は本発明の判定原理を説明する図、第２図は正常
コイルに流れる電流特性を説明する図、第３図はコイル
が層間短絡をした時の電流特性を説明する等価回路図、
第４図は異常コイルに流れる電流特性を説明する図、第
５図は本発明による実施例を示す検出装置の図である。 １……巻線、２……電源装置、３……短絡部のコイル、
４……短絡外のコイル、５……負荷電源装置、６……巻
線異常判定装置、７……信号発生部、８……異常判定
部、９……試験線、10……測定スイッチFIG. 1 is a diagram for explaining the determination principle of the present invention, FIG. 2 is a diagram for explaining current characteristics flowing in a normal coil, and FIG. 3 is an equivalent circuit diagram for explaining current characteristics when a coil is short-circuited between layers.
FIG. 4 is a diagram for explaining the characteristics of the current flowing through the abnormal coil, and FIG. 5 is a diagram of a detection device showing an embodiment according to the present invention. 1 ... Winding, 2 ... Power supply device, 3 ... Short-circuited coil,
4 ... coil outside short circuit, 5 ... load power supply device, 6 ... winding abnormality determination device, 7 ... signal generation unit, 8 ... abnormality determination unit, 9 ... test line, 10 ... measurement switch
Claims (1)
る方法において、 被判定巻線にステップ状の一定電圧を与えて、この時該
巻線に流れる電流の波形を求め、 該電流の波形のステップ状立上りの有無により層間短絡
の有無を判定し、該電流のステップ状に立上った時の電
流値とその後の電流値、および該巻線の抵抗とインダク
タンスから層間短絡の部位を判定することを特徴とす
る、巻線を有する電気機器の巻線異常判定方法。1. A method for judging a winding abnormality of an electric device having a winding, wherein a stepwise constant voltage is applied to a winding to be judged, and a waveform of a current flowing through the winding at this time is obtained, The presence or absence of an interlayer short-circuit is determined by the presence or absence of a stepwise rise in the waveform of, and the current value at the time of the stepwise rise of the current and the subsequent current value, and the resistance and inductance of the winding, the part of the interlayer short-circuit. A method for determining a winding abnormality of an electric device having a winding, which comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152274A JPH0814596B2 (en) | 1987-06-18 | 1987-06-18 | Winding abnormality determination method for electric equipment having windings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152274A JPH0814596B2 (en) | 1987-06-18 | 1987-06-18 | Winding abnormality determination method for electric equipment having windings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63315968A JPS63315968A (en) | 1988-12-23 |
| JPH0814596B2 true JPH0814596B2 (en) | 1996-02-14 |
Family
ID=15536923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62152274A Expired - Lifetime JPH0814596B2 (en) | 1987-06-18 | 1987-06-18 | Winding abnormality determination method for electric equipment having windings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814596B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097982A (en) * | 1998-09-21 | 2000-04-07 | Ikd:Kk | Coil testing and evaluating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5717870A (en) * | 1980-07-08 | 1982-01-29 | Nissin Electric Co Ltd | Coil turn short circuit detection method of electromagnetic induction device |
| JPS61162755A (en) * | 1985-01-14 | 1986-07-23 | Denshi Seigyo Group:Kk | Impulse coil tester |
-
1987
- 1987-06-18 JP JP62152274A patent/JPH0814596B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63315968A (en) | 1988-12-23 |
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