JPS645259B2 - - Google Patents
Info
- Publication number
- JPS645259B2 JPS645259B2 JP54047639A JP4763979A JPS645259B2 JP S645259 B2 JPS645259 B2 JP S645259B2 JP 54047639 A JP54047639 A JP 54047639A JP 4763979 A JP4763979 A JP 4763979A JP S645259 B2 JPS645259 B2 JP S645259B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- high voltage
- voltage
- conductors
- conductor
- 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
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
【発明の詳細な説明】
この発明は複数相からなる高電圧導体に印加さ
れている交流電圧を測定する電圧測定装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voltage measuring device for measuring an alternating current voltage applied to a high voltage conductor consisting of multiple phases.
従来の静電誘導を利用したコンデンサ分圧によ
る電圧測定装置においては、高電圧導体が複数相
から構成され、これらの高電圧導体が近接してい
る場合、測定しようとする高電圧導体以外の他相
の高電圧導体からも静電誘導による影響を受ける
ので、測定しようとする高電圧導体のみの電圧を
正確に測定するのが困難であつた。 In conventional voltage measuring devices using capacitor voltage division using electrostatic induction, when a high voltage conductor is composed of multiple phases and these high voltage conductors are close to each other, other than the high voltage conductor to be measured Since the high voltage conductor of the phase is also affected by electrostatic induction, it has been difficult to accurately measure the voltage of only the high voltage conductor to be measured.
この発明は前記欠点を解消するためになされた
もので、各相高電圧導体とその各相高電圧導体に
対応した静電結合電極間に周囲の絶縁媒体よりも
誘電率の高い絶縁物を挿入して相分離することに
よつて、測定しようとする高電圧導体のみの電圧
を正確に測定する電圧測定装置を提供する。 This invention was made to eliminate the above-mentioned drawbacks, and an insulator having a higher dielectric constant than the surrounding insulating medium is inserted between each phase high voltage conductor and the capacitively coupled electrode corresponding to each phase high voltage conductor. To provide a voltage measuring device that accurately measures the voltage of only a high-voltage conductor to be measured by performing phase separation.
以下、第１図に示すこの発明の一実施例につい
て説明する。すなわち、第１図は３相一括形SF6
ガス絶縁電気機器に適用した場合の構成図であ
る。図において、１は管状密閉金属容器、２は絶
縁媒体であるSF6ガス、３はＵ相の高電圧導体、
４はＶ相の高電圧導体、５はＷ相の高電圧導体、
６，７，８はSF6ガス２の比誘電率よりも十分大
きい比誘電率を持つ絶縁物、９，１０，１１はそ
れぞれＵ相、Ｖ相及びＷ相の高電圧導体３〜５と
それぞれ所定の間隔をあけて対向した静電結合電
極で密閉金属容器１の気密を保つて容器１内に取
付けられている。 An embodiment of the present invention shown in FIG. 1 will be described below. In other words, Figure 1 shows the three-phase all-in-one type SF 6
FIG. 2 is a configuration diagram when applied to gas-insulated electrical equipment. In the figure, 1 is a tubular sealed metal container, 2 is SF 6 gas as an insulating medium, 3 is a U-phase high voltage conductor,
4 is a V-phase high voltage conductor, 5 is a W-phase high voltage conductor,
6, 7, and 8 are insulators with a dielectric constant sufficiently larger than that of SF 6 gas 2, and 9, 10, and 11 are high voltage conductors 3 to 5 of U phase, V phase, and W phase, respectively. The metal container 1 is installed in the container 1 while keeping the metal container 1 airtight with capacitively coupled electrodes facing each other at a predetermined distance.
１２，１３，１４はコンデンサ分圧するための
コンデンサ、１５，１６，１７は高入力インピー
ダンスアンプ、１８，１９，２０はそれぞれＵ
相、Ｖ相及びＷ相の高電圧導体３〜５の電圧を表
示するためのメータである。 12, 13, 14 are capacitors for capacitor voltage division, 15, 16, 17 are high input impedance amplifiers, 18, 19, 20 are U
This is a meter for displaying the voltage of high voltage conductors 3 to 5 of phase, V phase, and W phase.
上記実施例の動作を第１図で説明する。３相一
括形SF6ガス絶縁電気機器においては、３相の高
電圧導体３，４，５が一つの密閉金属容器１内に
収納されている。この場合、例えば、静電結合電
極９について言えば、Ｕ相の高電圧導体３との間
に挿入された絶縁物６は、チタン酸ストロンチウ
ム等の比誘電率の高い物質をエポキシ樹脂に添加
することにより、SF6ガス２の比誘電率１より２
桁近く比誘電率を高くできる。これによつて、Ｕ
相以外の高電圧導体４，５からの静電誘導の影響
を無視できる。従つて、高電圧導体３と静電結合
電極９との間の静電容量、及びコンデンサ１２の
静電容量との分圧による電圧を高入力インピーダ
ンスアンプ１５で増幅して、メータ１８で高電圧
導体３の電圧を表示できる。Ｖ相及びＷ相につい
ても同様である。 The operation of the above embodiment will be explained with reference to FIG. In a three-phase collective SF 6 gas-insulated electric device, three-phase high-voltage conductors 3 , 4 , and 5 are housed in a single sealed metal container 1 . In this case, for example, regarding the capacitively coupled electrode 9, the insulator 6 inserted between it and the U-phase high voltage conductor 3 is made by adding a substance with a high dielectric constant such as strontium titanate to the epoxy resin. By this, the dielectric constant of SF 6 gas 2 is smaller than 1 and 2.
The dielectric constant can be increased by nearly an order of magnitude. By this, U
The influence of electrostatic induction from the high voltage conductors 4 and 5 other than the phases can be ignored. Therefore, the voltage resulting from the voltage division between the capacitance between the high voltage conductor 3 and the capacitive coupling electrode 9 and the capacitance of the capacitor 12 is amplified by the high input impedance amplifier 15, and the high voltage is output by the meter 18. The voltage of conductor 3 can be displayed. The same applies to the V phase and W phase.
以上の実施例では３相一括形SF6ガス絶縁電気
機器について適用した場合であるが、３相以外の
多相の場合にも適用できる。また、絶縁媒体とし
て空気、真空又は油等いずれの場合にも適用でき
る。さらに、多相の高電圧導体が非対称の配置の
場合についても同様の効果が期待される。 In the above embodiment, the present invention is applied to a three-phase collective type SF 6 gas insulated electrical equipment, but it can also be applied to a multi-phase case other than three-phase. Furthermore, the insulating medium may be air, vacuum, oil, or the like. Furthermore, similar effects can be expected when multiphase high voltage conductors are arranged asymmetrically.
この発明によると、高電圧導体と電極間に周囲
の絶縁媒体より高い誘電率の絶縁物を挿入するこ
とによつて、他の高電圧導体からの静電誘導を防
げるので、電圧の測定が正確にできる。 According to this invention, by inserting an insulator with a higher dielectric constant than the surrounding insulating medium between the high voltage conductor and the electrode, electrostatic induction from other high voltage conductors can be prevented, resulting in accurate voltage measurement. Can be done.
図はこの発明の一実施例を示す構成図である。
図において、２はSF6ガス、３〜５は高電圧導
体、６〜８は絶縁物、９〜１１は電極、１２〜１
４はコンデンサである。
The figure is a configuration diagram showing an embodiment of the present invention.
In the figure, 2 is SF6 gas, 3-5 are high voltage conductors, 6-8 are insulators, 9-11 are electrodes, 12-1
4 is a capacitor.
Claims (1)
各相高電圧導体に対応した静電結合電極を設け、
各相毎に生じるこの間の静電容量と、各電極と基
準となる電位の間に接続するコンデンサの静電容
量とで分圧される電圧から各相高電圧導体の電圧
を測定する電圧測定装置において、前記各相高電
圧導体と対応した前記各静電結合電極間に周囲の
絶縁媒体よりも誘電率が高い絶縁物を挿入して相
分離したことを特徴とする電圧測定装置。1. Providing capacitive coupling electrodes corresponding to the high voltage conductors of each phase of an electrical device consisting of high voltage conductors of multiple phases,
A voltage measuring device that measures the voltage of each phase high voltage conductor from the voltage divided by the capacitance generated in each phase and the capacitance of the capacitor connected between each electrode and the reference potential. A voltage measuring device characterized in that an insulating material having a higher dielectric constant than a surrounding insulating medium is inserted between each of the capacitively coupled electrodes corresponding to the high voltage conductors of each phase to achieve phase separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4763979A JPS55149856A (en) | 1979-04-18 | 1979-04-18 | Voltage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4763979A JPS55149856A (en) | 1979-04-18 | 1979-04-18 | Voltage measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55149856A JPS55149856A (en) | 1980-11-21 |
| JPS645259B2 true JPS645259B2 (en) | 1989-01-30 |
Family
ID=12780801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4763979A Granted JPS55149856A (en) | 1979-04-18 | 1979-04-18 | Voltage measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55149856A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9759798B2 (en) * | 2014-05-13 | 2017-09-12 | General Electric Company | Calibration methods for voltage sensing devices |
-
1979
- 1979-04-18 JP JP4763979A patent/JPS55149856A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55149856A (en) | 1980-11-21 |
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