JPH08220162A - Measuring device of dielectric loss angle - Google Patents
Measuring device of dielectric loss angleInfo
- Publication number
- JPH08220162A JPH08220162A JP7028398A JP2839895A JPH08220162A JP H08220162 A JPH08220162 A JP H08220162A JP 7028398 A JP7028398 A JP 7028398A JP 2839895 A JP2839895 A JP 2839895A JP H08220162 A JPH08220162 A JP H08220162A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- high voltage
- dielectric loss
- voltage side
- loss angle
- 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.)
- Pending
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Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は高電圧側の測定信号を大
地側に伝送してデータ処理し所望の測定値を求める誘電
体損失角測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric loss angle measuring device for transmitting a high voltage side measurement signal to the ground side for data processing to obtain a desired measurement value.
【０００２】[0002]
【従来の技術】高圧回転電機の誘電体損失角の一つの測
定方法は、トランスを介して高圧供試機器および標準コ
ンデンサに電圧を印加することにより両者に流れる電流
を計器用変成器等により検出し、両電流の位相のずれ量
から誘電体損失角を求めるものである。その場合、高電
圧側測定部で得られた測定信号は大地側に配置された信
号処理部に伝送され、大地側で信号処理を施して誘電体
損失角を得て、それを指示したり記録したりするのに用
いる。その場合、大地側の信号処理部は高電圧側測定部
から電気的に絶縁する必要があるが、高電圧部の電圧が
高くなるに従って絶縁対策は大掛かりなものになる。主
回路においても測定電流を流すための変圧器を大地に対
し絶縁する必要がある。大地側で誘電体損失角を求める
のには、電流位相検出装置（シェーリング・ブリッジ）
を用いるのが普通であるが、この装置に付随して計器用
変圧器等の変成器を数多く使用する。2. Description of the Related Art One of the methods for measuring the dielectric loss angle of a high-voltage rotating electric machine is to detect the current flowing through both by applying a voltage to the high-voltage equipment under test and a standard capacitor through a transformer. Then, the dielectric loss angle is obtained from the phase shift amount of both currents. In that case, the measurement signal obtained by the high-voltage side measurement section is transmitted to the signal processing section arranged on the ground side, and the signal processing is performed on the ground side to obtain the dielectric loss angle, which is instructed or recorded. Used to do. In that case, the signal processing unit on the ground side needs to be electrically insulated from the measurement unit on the high voltage side, but as the voltage of the high voltage unit becomes higher, the measure for insulation becomes more elaborate. Also in the main circuit, it is necessary to insulate the transformer for passing the measured current from the ground. To find the dielectric loss angle on the ground side, a current phase detector (sharing bridge)
It is common to use a transformer, but many transformers such as instrument transformers are used in association with this device.
【０００３】[0003]
【発明が解決しようとする課題】誘電体損失角の測定に
おいて、シェーリング・ブリッジを用いる従来の方法に
おいては、高電圧回路の電源側高電圧部および電機巻線
と大地との間の信号ケーブルに被測定回路の電圧に対応
する絶縁強度を持たせなければならない。また、トラン
スを通した高電圧回路の電流を計器用変成器等により変
成するなど、多くの変成器を介して得られた両信号の比
較により位相のずれを測定するため、電流位相の検出精
度を確保する点でも限界があった。In the measurement of the dielectric loss angle, in the conventional method using the Schering bridge, the high voltage section of the high voltage circuit and the signal cable between the electric machine winding and the ground are used. It must have insulation strength that corresponds to the voltage of the circuit under test. In addition, the phase shift is measured by comparing both signals obtained through many transformers, such as transforming the current of the high-voltage circuit that passed through the transformer with a transformer for instruments, etc. There was also a limit in terms of securing.
【０００４】上述の絶縁の問題は誘電体損失角の測定に
限ったことではなく、高電圧回路上の他の物理量の測
定、たとえば高電圧側の電圧や、温度、応力、圧力、振
動などの測定の場合にも同様に生ずる問題である。The above-mentioned insulation problem is not limited to the measurement of the dielectric loss angle, but the measurement of other physical quantities on the high voltage circuit, such as the voltage on the high voltage side, temperature, stress, pressure, vibration, etc. The same problem occurs in the case of measurement.
【０００５】本発明は、測定信号の伝送回路に高電圧回
路と大地間の絶縁をとるための特別な絶縁構造物を必要
とすることなく、また計器用変成器等の変成器の使用を
少なくしつつ、高精度の測定を達成しうる誘電体損失角
測定装置を提供することを目的とする。The present invention does not require a special insulating structure for providing insulation between the high voltage circuit and the ground in the measurement signal transmission circuit, and reduces the use of transformers such as instrument transformers. At the same time, it is an object of the present invention to provide a dielectric loss angle measuring device capable of achieving highly accurate measurement.
【０００６】[0006]
【課題を解決するための手段】請求項１に記載の発明
は、高電圧側に配置され高電圧側で測定対象の誘電体損
失角に係る電流測定信号を形成する電流検出手段と、こ
の電流検出手段によって得られた電流測定信号をシリア
ル光信号に変換し大地側に向けて送信する高電圧側送信
手段と、高電圧側から送信された光信号を大地側で受信
し電気信号に変換して測定データを形成する大地側受信
手段と、得られた測定データをデータ処理して誘電体損
失角を算出するデータ処理手段とを備えた誘電体損失角
測定装置を要旨とするものである。According to a first aspect of the present invention, there is provided current detection means arranged on the high voltage side and forming a current measurement signal related to a dielectric loss angle of a measurement object on the high voltage side, and the current detection means. The high voltage side transmitting means for converting the current measurement signal obtained by the detecting means into a serial optical signal and transmitting it toward the ground side, and the optical signal transmitted from the high voltage side is received by the ground side and converted into an electric signal. SUMMARY OF THE INVENTION A gist of a dielectric loss angle measuring device is provided with a ground side receiving means for forming measurement data by means of the above, and a data processing means for processing the obtained measurement data to calculate a dielectric loss angle.
【０００７】請求項２に記載の発明は、請求項１に記載
の誘電体損失角測定装置において、高電圧側送信手段か
ら送信され、大地側受信手段によって受信される光信号
が赤外線であることを特徴とする。According to a second aspect of the present invention, in the dielectric loss angle measuring apparatus according to the first aspect, the optical signal transmitted from the high voltage side transmitting means and received by the ground side receiving means is infrared rays. Is characterized by.
【０００８】請求項３に記載の発明は、請求項１に記載
の誘電体損失角測定装置において、電流検出手段が測定
電流回路に直列に接続されたシャントからなっているこ
とを特徴とする。According to a third aspect of the present invention, in the dielectric loss angle measuring apparatus according to the first aspect, the current detecting means comprises a shunt connected in series to the measurement current circuit.
【０００９】請求項４に記載の発明は、請求項１ないし
３のいずれかに記載の誘電体損失角測定装置において、
大地側受信手段に大地側から高電圧側に向けて光信号の
形のトリガ信号を送信するトリガ信号用発光手段が備え
られるとともに、高電圧側送信手段に光信号の形のトリ
ガ信号を受信するトリガ信号用受光手段が備えられ、高
電圧側送信手段のオンオフ動作がトリガ信号用受光手段
によって受信されたトリガ信号を介して制御されること
を特徴とする。According to a fourth aspect of the invention, there is provided the dielectric loss angle measuring device according to any one of the first to third aspects,
The ground side receiving means is provided with a trigger signal light emitting means for transmitting a trigger signal in the form of an optical signal from the ground side to the high voltage side, and the high voltage side transmitting means receives the trigger signal in the form of an optical signal. Trigger signal light receiving means is provided, and ON / OFF operation of the high voltage side transmitting means is controlled via the trigger signal received by the trigger signal light receiving means.
【００１０】請求項５に記載の発明は、請求項４に記載
の誘電体損失角測定装置において、高電圧側送信手段は
動作電源としてバッテリーを備えたことを特徴とする。
請求項４に記載の誘電体損失角測定装置において、高電
圧側に配置される高電圧側測定部および高電圧側信号変
換手段の動作電源として高電圧側にバッテリーを備えた
ことを特徴とする。According to a fifth aspect of the present invention, in the dielectric loss angle measuring apparatus according to the fourth aspect, the high voltage side transmitting means includes a battery as an operating power source.
The dielectric loss angle measuring apparatus according to claim 4, wherein a battery is provided on the high voltage side as an operating power source of the high voltage side measuring unit and the high voltage side signal converting means arranged on the high voltage side. .
【００１１】請求項６に記載の発明は、請求項１ないし
４のいずれかに記載の誘電体損失角測定装置において、
高電圧側送信手段は動作電源として光電池を備えたこと
を特徴とする。According to a sixth aspect of the present invention, there is provided the dielectric loss angle measuring device according to any one of the first to fourth aspects,
The high-voltage side transmitting means is characterized by including a photocell as an operating power supply.
【００１２】[0012]
【作用】請求項１に記載の発明によれば、高電圧側から
大地側への信号伝送を光信号によって行うために、高電
圧側に配置する測定機器は大地電位を考慮する必要がな
く、また大地側に配置する機器は高電圧電位を考慮する
必要がなく、したがって大掛かりな絶縁構造を不要と
し、機器構成を簡易にすることができる。According to the invention described in claim 1, since the signal transmission from the high voltage side to the ground side is performed by the optical signal, the measuring equipment arranged on the high voltage side does not need to consider the ground potential, In addition, the device arranged on the ground side does not need to consider the high voltage potential, and therefore a large-scale insulating structure is not required, and the device configuration can be simplified.
【００１３】請求項２に記載の発明によれば、光信号と
して赤外線を用いることにより、高信頼性の装置を安価
に構成することができる。According to the second aspect of the invention, by using infrared rays as the optical signal, a highly reliable device can be constructed at low cost.
【００１４】請求項３に記載の発明によれば、電流測定
をシャントを用いて行うことにより、変成器等の構造物
の使用数を可及的に少なくし、高精度の測定を可能にす
ることができる。According to the third aspect of the present invention, the current is measured using the shunt, so that the number of structures such as the transformer used is reduced as much as possible, and high-precision measurement is possible. be able to.
【００１５】請求項４に記載の発明によれば、高電圧側
に配置される高電圧側送信手段のオンオフを、大地側か
ら高電圧側に向けて送信される光信号の形のトリガ信号
を介して制御することにより、省エネルギーを達成しつ
つ高精度の測定を実現することができる。According to the invention described in claim 4, the high-voltage side transmitting means arranged on the high-voltage side is turned on and off by a trigger signal in the form of an optical signal transmitted from the ground side to the high-voltage side. By controlling through, it is possible to realize highly accurate measurement while achieving energy saving.
【００１６】請求項５に記載の発明によれば、高電圧側
に配置される測定機器の動作電源としてバッテリーを高
電圧側に設けることにより、絶縁構成を簡易にし、保守
点検を容易にし、装置コストを安価にすることができ
る。According to the fifth aspect of the present invention, the battery is provided on the high voltage side as an operating power source of the measuring device arranged on the high voltage side, thereby simplifying the insulation structure and facilitating maintenance and inspection. The cost can be reduced.
【００１７】請求項６に記載の発明によれば、高電圧側
に配置される測定機器の動作電源として光電池を備える
ことによって、バッテリー交換の繁雑さを無くし、さら
には大地側からのトリガ信号による高電圧側送信手段の
オンオフ制御を行う必要性をも無くすことができる。According to the sixth aspect of the present invention, by providing a photocell as an operating power source of the measuring equipment arranged on the high voltage side, the complexity of battery replacement is eliminated, and further, a trigger signal from the ground side is used. It is also possible to eliminate the need to perform on / off control of the high voltage side transmission means.
【００１８】[0018]
【実施例】図１は本発明を高圧回転機巻線の誘電体損失
角を測定する装置に適用した場合の一実施例を示すもの
である。大地側に設置された交流電源１および昇圧トラ
ンス２を介して高電圧が得られ、その高電圧端子から標
準コンデンサ３および供試回転機巻線４に並列に測定用
高電圧が印加される。なお供試回転機巻線はそれに含ま
れる等価キャパシタンスによって図示されている。標準
コンデンサ３に直列に接続されたシャント５により標準
コンデンサ３に流れる電流Ｉ1 に比例する低電圧の形の
電流測定信号ｉ1 が得られ、供試回転機巻線４に直列に
接続されたシャント６により供試回転機巻線４に流れる
電流Ｉ2 に比例する低電圧の形の電流測定信号ｉ2 が得
られる。両電流測定信号ｉ1 ，ｉ2 は高電圧側送信装置
７に導入され、ここで光信号Ｌ1 に変換され大地側に向
けて送信される。大地側に送信された光信号Ｌ1 は大地
側受信装置８によって再び電気信号に変換され測定デー
タとしてデータ処理装置９に導入される。データ処理装
置９は受信装置８から送られた測定データをデータ処理
して供試回転機巻線４の誘電体損失角（tan δ）を算出
する。なお図１の装置においては、シャント５，６が電
流検出手段を構成し、高電圧側送信装置７が高電圧側送
信手段を構成し、大地側受信装置８が大地側受信手段を
構成し、データ処理装置９がデータ処理手段を構成して
いる。FIG. 1 shows an embodiment in which the present invention is applied to an apparatus for measuring a dielectric loss angle of a high-voltage rotating machine winding. A high voltage is obtained via the AC power supply 1 and the step-up transformer 2 installed on the ground side, and a high voltage for measurement is applied in parallel from the high voltage terminal to the standard capacitor 3 and the test machine winding 4. Note that the test rotor winding is illustrated by the equivalent capacitance contained therein. The shunt 5 connected in series with the standard capacitor 3 provided a current measurement signal i 1 in the form of a low voltage proportional to the current I 1 flowing in the standard capacitor 3 and connected in series with the test rotor winding 4. The shunt 6 provides a current measurement signal i 2 in the form of a low voltage which is proportional to the current I 2 flowing in the test machine winding 4. Both current measurement signals i 1 and i 2 are introduced into the high voltage side transmission device 7, where they are converted into an optical signal L 1 and transmitted toward the ground side. The optical signal L 1 transmitted to the ground side is converted into an electric signal again by the ground side receiving device 8 and introduced into the data processing device 9 as measurement data. The data processing device 9 processes the measurement data sent from the receiving device 8 to calculate the dielectric loss angle (tan δ) of the test rotor winding 4. In the apparatus of FIG. 1, the shunts 5 and 6 constitute current detecting means, the high voltage side transmitting apparatus 7 constitutes high voltage side transmitting means, and the ground side receiving apparatus 8 constitutes ground side receiving means. The data processing device 9 constitutes data processing means.
【００１９】高電圧側送信装置７および大地側受信装置
８のより詳細な構成をそれぞれ図２および図３を参照し
て説明する。More detailed configurations of the high voltage side transmitter 7 and the ground side receiver 8 will be described with reference to FIGS. 2 and 3, respectively.
【００２０】図２は高電圧側送信装置７の内部構成を示
すものである。シャント５，６により得られる電流測定
信号ｉ1 ，ｉ2 はアナログ信号であり、これらはサンプ
ルホールド・マルチプレクサ回路（ hold MPX 回路）１
１を介してサンプリングされ、サンプルホールドされ、
サンプル信号として出力される。 hold MPX 回路１１の
サンプリング時間は主として使用電源周波数に依存する
が、仮に使用電源周波数が５０Ｈz であるとすれば、１
周期２０msであり、その電気角１°は概略５０μｓに相
当する。したがって、５μｓ程度のサンプリング時間と
すれば約０．１°の精度をもって位相ずれを測定するこ
とができる。このサンプル信号はＡ／Ｄ変換器１２によ
りディジタル信号に変換され、いったん、メモリ１３に
記憶される。メモリ１３に記憶されたディジタル信号は
パラレル信号として取出され、パラレル／シリアル変換
器（Ｐ／Ｓ変換器）１４によりシリアル信号に再変換さ
れる。Ｐ／Ｓ変換器１４から出力されるシリアル信号は
測定データ送信用発光素子１６から光信号Ｌ1 、たとえ
ば赤外線の形で大地側受信装置８に向けて送信される。
送信装置７にはバッテリー１８を備えており、図示は省
略しているが、このバッテリー１８から、動作電源を必
要とする各構成機器、すなわち hold MPX 回路１１、Ａ
／Ｄ変換器１２、メモリ１３、Ｐ／Ｓ変換器１４および
コントローラ１５に対して動作電力が供給される。高電
圧側送信装置７を構成する hold MPX回路１１、Ａ／Ｄ
変換器１２、メモリ１３およびＰ／Ｓ変換器１４は、省
エネルギーを意図しコントローラ１５からのトリガ信号
によってトリガされ動作する。コントローラ１５自体
は、大地側から光信号Ｌ2 の形で送信されたトリガ信号
によりトリガ信号受光素子１７を介してトリガされる。FIG. 2 shows the internal structure of the high voltage side transmitter 7. The current measurement signals i 1 and i 2 obtained by the shunts 5 and 6 are analog signals, and these are sample-hold multiplexer circuits (hold MPX circuits) 1
Sampled through 1, sample-and-hold,
It is output as a sample signal. The sampling time of the hold MPX circuit 11 mainly depends on the power frequency used, but if the power frequency used is 50 Hz, then 1
The cycle is 20 ms, and the electrical angle of 1 ° corresponds to approximately 50 μs. Therefore, if the sampling time is about 5 μs, the phase shift can be measured with an accuracy of about 0.1 °. This sample signal is converted into a digital signal by the A / D converter 12, and is temporarily stored in the memory 13. The digital signal stored in the memory 13 is taken out as a parallel signal and reconverted into a serial signal by the parallel / serial converter (P / S converter) 14. The serial signal output from the P / S converter 14 is transmitted from the measurement data transmitting light emitting element 16 to the ground side receiving device 8 in the form of an optical signal L 1 , for example, infrared light.
Although not shown in the figure, the transmitter 7 is provided with a battery 18, and from this battery 18, each constituent device that requires an operating power supply, that is, the hold MPX circuit 11, A
Operating power is supplied to the / D converter 12, the memory 13, the P / S converter 14, and the controller 15. Hold MPX circuit 11, A / D that constitutes the high-voltage side transmitter 7
The converter 12, the memory 13, and the P / S converter 14 are operated by being triggered by a trigger signal from the controller 15 in order to save energy. The controller 15 itself is triggered via the trigger signal light receiving element 17 by the trigger signal transmitted in the form of the optical signal L 2 from the ground side.
【００２１】図３は大地側受信装置８の内部構成を示す
ものである。受信装置８には送信装置７から送信された
光信号Ｌ1 を受光する測定信号受信用受光素子２１と、
送信装置７へ向けてトリガ信号を光信号Ｌ2 の形で送信
する大地側トリガ信号発光素子２２とが備えられてい
る。送信装置７から光信号Ｌ1 形で送信された電流測定
データは受光素子２１によって受光されシリアル電気信
号に変換される。このシリアル電気信号すなわちシリア
ル測定データはシリアル／パラレル変換器（Ｓ／Ｐ変換
器）２３に導入され、ここでパラレルデータに変換され
インターフェース２４を介してデータ処理装置９に送出
される。データ処理装置９はマイクロコンピュータによ
って構成することができる。データ処理装置９は高電圧
側送信装置７の動作を制御する機能、すなわち送信装置
７内の各構成機器をオンオフ制御する機能をも有し、そ
れはインターフェース２４、Ｐ／Ｓ変換器２５および発
光素子２２を介して送信装置７に向けて送信される光信
号Ｌ2 の形のトリガ信号によって行われる。FIG. 3 shows the internal structure of the ground receiving device 8. The receiving device 8 includes a measurement signal receiving light receiving element 21 for receiving the optical signal L 1 transmitted from the transmitting device 7,
A ground-side trigger signal light emitting element 22 for transmitting a trigger signal to the transmitter 7 in the form of an optical signal L 2 is provided. The current measurement data transmitted from the transmitter 7 in the form of the optical signal L 1 is received by the light receiving element 21 and converted into a serial electric signal. This serial electric signal, that is, serial measurement data, is introduced into a serial / parallel converter (S / P converter) 23, where it is converted into parallel data and sent to the data processing device 9 via the interface 24. The data processing device 9 can be configured by a microcomputer. The data processing device 9 also has a function of controlling the operation of the high-voltage side transmitting device 7, that is, a function of turning on / off each component in the transmitting device 7, which includes the interface 24, the P / S converter 25, and the light emitting element. By a trigger signal in the form of an optical signal L 2 which is transmitted via 22 towards the transmitter 7.
【００２２】図１に示した誘電体損失角測定装置の動作
を以下に説明する。The operation of the dielectric loss angle measuring device shown in FIG. 1 will be described below.
【００２３】データ処理装置９からトリガ信号を出力す
ることにより大地側受信装置８の発光素子２２から光信
号Ｌ2 の形のトリガ信号が発せられ、それを高電圧側送
信装置７の受光素子１７が受光することによりコントロ
ーラ１５を介して送信装置７がトリガされ、誘電体損失
角（tan δ）を算出するための電流Ｉ1 ，Ｉ2 を表す電
流測定信号ｉ1 ，ｉ2 のサンプリングおよびサンプルホ
ールドが行われ、サンプル信号として出力される。この
サンプル信号はＡ／Ｄ変換器１２を介してメモリ１３に
いったん記憶される。メモリ１３にいったん記憶された
測定データはディジタル・パラレル信号の形で取り出さ
れ、Ｐ／Ｓ変換器１４によりシリアル信号に変換され測
定データとして発光素子１６に対し出力される。発光素
子１６はその測定データを光信号Ｌ1 の形で大地側受信
装置８に向けて送信する。この光信号Ｌ1 は大地側で受
光素子２１により受光される。光信号Ｌ1 による測定デ
ータの送受信は発光素子１６と受光素子２１とが対向し
ている状態で行われるが、両者の間隔距離として数メー
トル以上とることができるため、発光素子１６から受光
素子２１に向けて送信された光信号Ｌ1 の到達範囲は広
く、そのため発光素子１６と受光素子２１の位置調整は
容易である。高電圧側送信装置７は大地側受信装置８か
らトリガ信号を受信する度に測定データを更新して送信
する。By outputting the trigger signal from the data processing device 9, a trigger signal in the form of an optical signal L 2 is emitted from the light emitting element 22 of the ground side receiving device 8, which is received by the light receiving element 17 of the high voltage side transmitting device 7. When the light is received by the transmitter 7, the transmitter 7 is triggered via the controller 15 to sample and sample the current measurement signals i 1 and i 2 representing the currents I 1 and I 2 for calculating the dielectric loss angle (tan δ). Hold is performed and output as a sample signal. This sample signal is temporarily stored in the memory 13 via the A / D converter 12. The measurement data once stored in the memory 13 is taken out in the form of a digital parallel signal, converted into a serial signal by the P / S converter 14 and output as measurement data to the light emitting element 16. The light emitting element 16 transmits the measurement data in the form of an optical signal L 1 to the ground side receiving device 8. This optical signal L 1 is received by the light receiving element 21 on the ground side. The transmission and reception of the measurement data by the optical signal L 1 is performed in a state where the light emitting element 16 and the light receiving element 21 face each other, but since the distance between the two can be several meters or more, the light emitting element 16 and the light receiving element 21 can The optical signal L 1 transmitted toward the optical receiver has a wide reach, and therefore the position adjustment of the light emitting element 16 and the light receiving element 21 is easy. Each time the high voltage side transmitter 7 receives a trigger signal from the ground side receiver 8, it updates and transmits the measurement data.
【００２４】大地側受信装置８において受光素子２１で
受信されたシリアル光信号Ｌ1 の形の測定データはＳ／
Ｐ変換器２３でパラレルデータに変換され、データ処理
装置９に送出される。データ処理装置９は入力された測
定データをデータ処理し、周知の原理に従って供試回転
機巻線４の誘電体損失角tan δを算出する。The measured data in the form of the serial optical signal L 1 received by the light receiving element 21 in the ground side receiver 8 is S /
It is converted into parallel data by the P converter 23 and sent to the data processing device 9. The data processing device 9 processes the input measurement data, and calculates the dielectric loss angle tan δ of the test rotor winding 4 according to a well-known principle.
【００２５】以上述べた実施例によれば、高電圧側で得
られた測定信号を、変成器等の変換器を用いることな
く、光信号の形で大地側へ送信するので、高電圧回路と
大地間の絶縁をとるための特別な構造物を必要とするこ
となく、また、計器用変成器等の変成器の使用を少なく
しつつ、高精度の測定を達成することができる。According to the embodiment described above, the measurement signal obtained on the high voltage side is transmitted to the ground side in the form of an optical signal without using a converter such as a transformer, so that a high voltage circuit is used. High-accuracy measurement can be achieved without requiring a special structure for insulation between grounds and reducing the use of transformers such as instrument transformers.
【００２６】高電圧側送信装置７の各構成要素を駆動す
るために動作電源を必要とすることは当然である。その
ような動作電源は、各構成要素をトリガ信号による限ら
れたチャンスにのみ測定を実行するようにすることによ
り、送信装置７に内蔵したバッテリー１８によって十分
まかなうことができる。しかし、エネルギー消耗性のバ
ッテリー１８の代わりに、エネルギー自己補充性の光電
池を備えることにより、バッテリー交換の繁雑さを無く
し、さらには大地側からのトリガ信号による高電圧側送
信装置７のオンオフ制御を行うまでもなく連続的に動作
させることができる。そうすることにより、大地側から
高電圧側にトリガ信号を送信するための信号系統が不要
にすることができる。しかしながら、その場合でも高電
圧側の省エネルギーのために、高電圧側送信装置７の各
構成要素をトリガ信号による限られたチャンスにのみ測
定を実行するようにしてもよい。It goes without saying that an operating power supply is required to drive each component of the high voltage side transmitter 7. Such an operating power supply can be adequately covered by the battery 18 built into the transmitter 7 by allowing each component to perform measurements only on a limited chance by the trigger signal. However, by replacing the energy-consuming battery 18 with an energy self-replenishing photocell, the complexity of battery replacement is eliminated, and on / off control of the high-voltage side transmitter 7 by a trigger signal from the ground side is performed. Needless to say, it can be operated continuously. By doing so, the signal system for transmitting the trigger signal from the ground side to the high voltage side can be eliminated. However, even in that case, in order to save energy on the high voltage side, each component of the high voltage side transmission device 7 may perform the measurement only at a limited chance by the trigger signal.
【００２７】高電圧側送信装置７における hold MPX 回
路１１によるサンプリング時間をより高速にし、Ａ／Ｄ
変換器１２のビット数およびメモリ１３の容量を大きく
することにより、さらに高精度の測定を実現することが
できる。The sampling time by the hold MPX circuit 11 in the high-voltage side transmitter 7 is made faster, and A / D
By increasing the number of bits of the converter 12 and the capacity of the memory 13, more accurate measurement can be realized.
【００２８】以上の実施例においては、高圧回転機巻線
の誘電体損失角を測定する場合について説明したが、本
発明はそのような誘電体損失角の測定に限られることな
く、他の物理量の測定、たとえば高電圧側の電圧や温
度、応力、圧力、振動など、電気信号に変換しうる物理
量であれば、それらの信号の伝送のために上記と同様に
適用することができる。In the above embodiments, the case of measuring the dielectric loss angle of the high voltage rotating machine winding has been described, but the present invention is not limited to such measurement of the dielectric loss angle, and other physical quantities. Of the physical quantity that can be converted into an electric signal, such as the voltage or temperature on the high voltage side, stress, pressure, vibration, etc., can be applied in the same manner as above for the transmission of those signals.
【００２９】[0029]
【発明の効果】本発明によれば、高電圧側から大地側へ
の測定データの伝送を光信号によって行うことにより、
高電圧側に配置する測定機器は大地電位を考慮する必要
がなく、また大地側に配置する機器は高電圧側電位を考
慮する必要がなく、したがって大掛かりな絶縁構造を不
要とし、簡易な機器構成のもとで高精度の誘電体損失角
測定を達成することができる。According to the present invention, by transmitting the measurement data from the high voltage side to the ground side by the optical signal,
The measuring equipment placed on the high voltage side does not need to consider the ground potential, and the equipment placed on the ground side does not need to consider the high voltage side potential, thus eliminating the need for a large-scale insulation structure and simplifying the equipment configuration. Under this condition, highly accurate dielectric loss angle measurement can be achieved.
【図１】本発明による誘電体損失角測定装置の一実施例
の全体構成を示す結線図。FIG. 1 is a connection diagram showing an overall configuration of an embodiment of a dielectric loss angle measuring device according to the present invention.
【図２】図１における高電圧側送信装置の内部構成を示
すブロック図。FIG. 2 is a block diagram showing an internal configuration of a high-voltage side transmitter in FIG.
【図３】図１における大地側受信装置の内部構成を示す
ブロック図。3 is a block diagram showing an internal configuration of a ground side receiving apparatus in FIG.
１ 交流電源 ２ 昇圧トランス ３ 標準コンデンサ ４ 供試回転機巻線 ５，６ シャント ７ 高電圧側送信装置 ８ 大地側受信装置 ９ データ処理装置 １１ サンプルホールド・マルチプレクサ（ hold MPX
）回路 １２ Ａ／Ｄ変換器 １３ メモリ １４ パラレル／シリアル変換器（Ｐ／Ｓ変換器） １５ コントローラ １６ 高電圧側測定データ送信用発光素子 １７ トリガ信号受光素子 １８ バッテリー ２１ 大地側測定データ受信用受光素子 ２２ 大地側トリガ信号発光素子 ２３ シリアル／パラレル変換器（Ｓ／Ｐ変換器） ２４ インターフェース ２５ パラレル／シリアル変換器（Ｐ／Ｓ変換器）1 AC power supply 2 Step-up transformer 3 Standard capacitor 4 Test rotor winding 5, 6 Shunt 7 High voltage side transmitter 8 Ground side receiver 9 Data processing device 11 Sample hold multiplexer (hold MPX)
) Circuit 12 A / D converter 13 Memory 14 Parallel / serial converter (P / S converter) 15 Controller 16 Light emitting element for high voltage side measurement data transmission 17 Trigger signal light receiving element 18 Battery 21 Ground side measurement data receiving light reception Element 22 Ground side trigger signal light emitting element 23 Serial / parallel converter (S / P converter) 24 Interface 25 Parallel / serial converter (P / S converter)
Claims (6)
誘電体損失角に係る電流測定信号を形成する電流検出手
段と、この電流検出手段によって得られた電流測定信号
をシリアル光信号に変換し大地側に向けて送信する高電
圧側送信手段と、高電圧側から送信された光信号を大地
側で受信し電気信号に変換して測定データを形成する大
地側受信手段と、得られた測定データをデータ処理して
誘電体損失角を算出するデータ処理手段とを備えた誘電
体損失角測定装置。1. A current detecting means which is arranged on the high voltage side and forms a current measuring signal relating to a dielectric loss angle of an object to be measured on the high voltage side, and a current measuring signal obtained by the current detecting means is a serial optical signal. High-voltage side transmitting means for converting to and transmitting toward the ground side, and ground-side receiving means for receiving the optical signal transmitted from the high-voltage side on the ground side and converting it into an electric signal to form measurement data, and A dielectric loss angle measuring device comprising: data processing means for processing the measured data thus obtained to calculate a dielectric loss angle.
おいて、高電圧側送信手段から送信され、大地側受信手
段によって受信される光信号が赤外線であることを特徴
とする誘電体損失角測定装置。2. The dielectric loss angle measuring device according to claim 1, wherein the optical signal transmitted from the high voltage side transmitting means and received by the ground side receiving means is infrared light. Angle measuring device.
おいて、電流検出手段が測定電流回路に直列に接続され
たシャントからなっていることを特徴とする誘電体損失
角測定装置。3. The dielectric loss angle measuring device according to claim 1, wherein the current detecting means comprises a shunt connected in series to the measuring current circuit.
体損失角測定装置において、大地側受信手段に大地側か
ら高電圧側に向けて光信号の形のトリガ信号を送信する
トリガ信号用発光手段が備えられるとともに、高電圧側
送信手段に光信号の形のトリガ信号を受信するトリガ信
号用受光手段が備えられ、高電圧側送信手段のオンオフ
動作がトリガ信号用受光手段によって受信されたトリガ
信号を介して制御されることを特徴とする誘電体損失角
測定装置。4. The dielectric loss angle measuring device according to claim 1, wherein a trigger signal for transmitting a trigger signal in the form of an optical signal from the ground side to the high voltage side is transmitted to the ground side receiving means. And a trigger signal light receiving means for receiving a trigger signal in the form of an optical signal in the high voltage side transmitting means, and the ON / OFF operation of the high voltage side transmitting means is received by the trigger signal light receiving means. And a dielectric loss angle measuring device controlled by a trigger signal.
おいて、高電圧側送信手段は動作電源としてバッテリー
を備えたことを特徴とする誘電体損失角測定装置。5. The dielectric loss angle measuring apparatus according to claim 4, wherein the high voltage side transmitting means includes a battery as an operating power source.
体損失角測定装置において、高電圧側送信手段は動作電
源として光電池を備えたことを特徴とする誘電体損失角
測定装置。6. The dielectric loss angle measuring device according to claim 1, wherein the high voltage side transmitting means comprises a photocell as an operating power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7028398A JPH08220162A (en) | 1995-02-16 | 1995-02-16 | Measuring device of dielectric loss angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7028398A JPH08220162A (en) | 1995-02-16 | 1995-02-16 | Measuring device of dielectric loss angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08220162A true JPH08220162A (en) | 1996-08-30 |
Family
ID=12247566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7028398A Pending JPH08220162A (en) | 1995-02-16 | 1995-02-16 | Measuring device of dielectric loss angle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08220162A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007256022A (en) * | 2006-03-22 | 2007-10-04 | Institute Of National Colleges Of Technology Japan | Method and device for measuring loss current by high-potential-side detection type-displacement current bypass method |
| CN102043099A (en) * | 2010-10-28 | 2011-05-04 | 河南省电力公司平顶山供电公司 | Device for testing dielectric loss at high voltage |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN104849569A (en) * | 2015-05-19 | 2015-08-19 | 江苏理工学院 | Dielectric loss measuring method |
| CN107860982A (en) * | 2017-11-06 | 2018-03-30 | 国网福建省电力有限公司 | The dielectric loss test circuit and its control method that a kind of pre- anti-induced electrical is sent |
| CN113933596A (en) * | 2021-09-22 | 2022-01-14 | 上海电机学院 | Medium-high voltage motor dielectric loss intelligent test device |
-
1995
- 1995-02-16 JP JP7028398A patent/JPH08220162A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007256022A (en) * | 2006-03-22 | 2007-10-04 | Institute Of National Colleges Of Technology Japan | Method and device for measuring loss current by high-potential-side detection type-displacement current bypass method |
| CN102043099A (en) * | 2010-10-28 | 2011-05-04 | 河南省电力公司平顶山供电公司 | Device for testing dielectric loss at high voltage |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| CN103558458B (en) * | 2013-11-19 | 2015-11-25 | 国家电网公司 | A kind of determination methods of insulation characterisitic quality of cable |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN104849569A (en) * | 2015-05-19 | 2015-08-19 | 江苏理工学院 | Dielectric loss measuring method |
| CN107860982A (en) * | 2017-11-06 | 2018-03-30 | 国网福建省电力有限公司 | The dielectric loss test circuit and its control method that a kind of pre- anti-induced electrical is sent |
| CN107860982B (en) * | 2017-11-06 | 2019-12-27 | 国网福建省电力有限公司 | Dielectric loss test circuit for preventing induced electricity from being sent backwards and control method thereof |
| CN113933596A (en) * | 2021-09-22 | 2022-01-14 | 上海电机学院 | Medium-high voltage motor dielectric loss intelligent test device |
| CN113933596B (en) * | 2021-09-22 | 2024-01-23 | 上海电机学院 | Medium-high voltage motor dielectric loss intelligent testing device |
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