JPS6349844B2 - - Google Patents
Info
- Publication number
- JPS6349844B2 JPS6349844B2 JP13313882A JP13313882A JPS6349844B2 JP S6349844 B2 JPS6349844 B2 JP S6349844B2 JP 13313882 A JP13313882 A JP 13313882A JP 13313882 A JP13313882 A JP 13313882A JP S6349844 B2 JPS6349844 B2 JP S6349844B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- disconnector
- sensor
- shield
- ground layer
- 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 8
- 238000012806 monitoring device Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
- 230000006866 deterioration Effects 0.000 description 11
- 239000004020 conductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は真空しや断器の真空度監視装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum degree monitoring device for a vacuum shield breaker.
一般に真空しや断器はその真空度が10-4Torr
以下の圧力で正常なしや断能力を有しているが、
この真空度はしや断器内部からの放出ガスや溶接
およびろう付けなどの接合部からのスローリーク
などによつて劣化し、しや断能力が低下すること
がある。このため、真空しや断器の使用時におい
てはその真空度を監視することが性能保証上から
必要欠くべからざるものとなつている。 Generally, the vacuum degree of a vacuum disconnector is 10 -4 Torr.
It is normal or has the ability to break at pressures below,
This vacuum level may deteriorate due to gas released from inside the breaker or disconnector, or slow leakage from joints such as welding and brazing, resulting in a decrease in breaker ability. For this reason, when using a vacuum chamber or disconnector, it is essential to monitor the degree of vacuum in order to guarantee performance.
そこで従来においては、真空しや断器内部に放
電電極を設けるとともに別電源により高電圧を印
加し、この際の放電状態が真空度により変化する
ことを利用して真空度のチエツクを行うなどして
いたが、このような方法では真空しや断器の構造
が複雑になるとともに高電圧の別電源を用意しな
ければならないため高価になつた。又、真空度の
チエツクに際しては真空しや断器を回路から切離
した場合は真空しや断器の可動電極を固定電極か
ら真空度劣化による放電し易い距離だけ開極し
て、別電源から高電圧を印加し、この際の放電状
態により真空度の良否を判定していた。この方法
では電源を止める必要もあり、非常に面倒であつ
た。特に導体および真空しや断器などの高電圧部
分を電気絶縁と構造体を兼ねるようエポキシ樹脂
などでモールドし、モールド体の外表面に安全の
為接地層を設けた固体絶縁型真空しや断器におけ
る真空しや断器の真空度監視は上記の欠点が大き
く影響し多大の困難を伴つた。 Conventionally, therefore, a discharge electrode is provided inside the vacuum chamber or disconnector, and a high voltage is applied from a separate power source, and the degree of vacuum is checked by taking advantage of the fact that the discharge state at this time changes depending on the degree of vacuum. However, with this method, the structure of the vacuum shield and disconnector was complicated, and a separate high-voltage power source had to be provided, making it expensive. In addition, when checking the degree of vacuum, if the vacuum shield or breaker is disconnected from the circuit, open the movable electrode of the vacuum shield or breaker from the fixed electrode by a distance that is likely to cause discharge due to vacuum deterioration, and connect the A voltage was applied, and the quality of the vacuum was judged based on the discharge state at this time. This method required turning off the power, which was very troublesome. In particular, high-voltage parts such as conductors and vacuum shields and disconnectors are molded with epoxy resin to serve both as electrical insulation and a structure, and a solid insulated vacuum shield and disconnector are molded with a ground layer on the outer surface of the molded body for safety. Monitoring the vacuum level of the vacuum chamber and disconnector in the vacuum chamber has been greatly affected by the above-mentioned drawbacks and has been accompanied by great difficulties.
本発明は上記の欠点を除去して、放電電極や高
電圧の別電源を必要とせず、かつ真空しや断器を
回路に接続したままでその真空度のチエツクを行
うことができ、真空度のチエツクを簡単かつ安価
に行うことができる真空しや断器の真空度監視装
置を提供することを目的とする。 The present invention eliminates the above-mentioned drawbacks, does not require a discharge electrode or a separate high-voltage power source, and can check the vacuum level of a vacuum shield or disconnector while it is connected to the circuit. An object of the present invention is to provide a vacuum degree monitoring device for a vacuum insulator or disconnector that can easily and inexpensively check.
以下本発明の実施例を図面とともに説明する。
第１図において、１は真空しや断器で、真空しや
断器１は絶縁筒２の両端に金属製の端板３，４を
取付けて真空容器を形成し、端板３には固定リー
ド５を挿着するとともに端板４にはベローズ６を
介して可動リード７を移動可能に挿着し、固定リ
ード５および可動リード７の先端には夫々固定電
極８および可動電極９を取付ける。又、絶縁筒２
の中間にはしや断時電極８，９間に発生する金属
蒸気が絶縁筒２の内面に付着するのを防止するた
めのシールド１０を取付ける。１１，１２は補助
シールド、１３は外部接続導体で、この外部接続
導体１３は電源側に接続される。図中点線で示し
たCLは負荷側大地間との静電容量（例えばケー
ブルと大地間）を示す。１４は詳細を後述する絶
縁ロツドで、この絶縁ロツド１４の一端はレバー
１５を介して可動リード７に枢支される。またロ
ツド１４の他端は操作ばね１６等を介して第２図
に示す操作装置４７に連結される。 Embodiments of the present invention will be described below with reference to the drawings.
In Fig. 1, 1 is a vacuum shield disconnector.The vacuum shield disconnector 1 has metal end plates 3 and 4 attached to both ends of an insulating cylinder 2 to form a vacuum container, and is fixed to the end plate 3. While the lead 5 is inserted, a movable lead 7 is movably inserted into the end plate 4 via a bellows 6, and a fixed electrode 8 and a movable electrode 9 are attached to the tips of the fixed lead 5 and the movable lead 7, respectively. Also, insulating tube 2
A shield 10 is installed in the middle of the insulating cylinder 2 to prevent metal vapor generated between the chopping electrodes 8 and 9 from adhering to the inner surface of the insulating cylinder 2. 11 and 12 are auxiliary shields, and 13 is an external connection conductor, and this external connection conductor 13 is connected to the power supply side. CL indicated by a dotted line in the figure indicates the capacitance between the load side and the ground (for example, between the cable and the ground). Reference numeral 14 denotes an insulating rod whose details will be described later, and one end of this insulating rod 14 is pivotally supported by the movable lead 7 via a lever 15. The other end of the rod 14 is connected to an operating device 47 shown in FIG. 2 via an operating spring 16 and the like.
第２図は真空開閉器の側面図で、真空しや断器
１はエポキシ樹脂などの絶縁物でモールドされ、
このモールド部である固体絶縁層７０の外表面に
は接地層４０が施されて盤体４１に配設されてい
る。４２は摺動コンタクト、４３はリングコンタ
クト、４４は母線側に接続される導体である。４
５真空度検出部で蓋体４１に固設されており、こ
の検出部４５には同軸ケーブル４６が接続され、
そのケーブル４６の先端には後述するセンサが接
続され、このセンサは真空しや断器１がモールド
されて、そのモールド部表面を接地層４０により
接地しているため後述の放電波信号が外部に放射
されなくなるから、センサを絶縁ロツド１４に装
着する必要がある。４７は操作装置、４８は母線
箱、４９は接続導体で、接地層４０で被覆したレ
ジンモールド５０で覆われている。５１は屋外用
の屋根兼蓋体、５２は正面扉、５３はパツキン
グ、５４は取付用ボルト・ナツト、５５は台であ
る。 Figure 2 is a side view of the vacuum switch, and the vacuum switch 1 is molded with an insulating material such as epoxy resin.
A ground layer 40 is provided on the outer surface of the solid insulating layer 70, which is the molded portion, and is disposed on the board 41. 42 is a sliding contact, 43 is a ring contact, and 44 is a conductor connected to the bus bar side. 4
5. A degree of vacuum detection section is fixed to the lid body 41, and a coaxial cable 46 is connected to this detection section 45.
A sensor to be described later is connected to the tip of the cable 46, and this sensor is molded with a vacuum shield breaker 1, and the surface of the molded part is grounded by a ground layer 40, so that a discharge wave signal to be described later is transmitted to the outside. Since no radiation is emitted, it is necessary to mount the sensor on an insulating rod 14. 47 is an operating device, 48 is a bus box, and 49 is a connecting conductor, which is covered with a resin mold 50 covered with a ground layer 40. Reference numeral 51 is an outdoor roof/lid body, 52 is a front door, 53 is a packing, 54 is a mounting bolt and nut, and 55 is a stand.
第３図は前記センサが装着されている絶縁ロツ
ド１４の拡大断面図で、この第３図において、５
６は絶縁ロツド１４の端部に装着されるセンサ
で、このセンサ５６は第４図Ａから第４図Ｄに示
すように半円形状のものや、導体を単に折曲した
形状のものから構成される。なお、センサ５６は
これら形状に限定されないで、直線状の棒体でも
よい。第３図中、５７は電界緩和用突出部５８を
有する円筒状金属体で前記固体絶縁層７０の筒部
５９の一端に埋設されている。６０は絶縁ロツド
１４に取付けられた金属からなる取付体である。 FIG. 3 is an enlarged sectional view of the insulating rod 14 to which the sensor is attached, and in this FIG.
Reference numeral 6 denotes a sensor attached to the end of the insulating rod 14, and this sensor 56 is constructed of a semicircular shape or a simply bent conductor, as shown in FIGS. 4A to 4D. be done. Note that the sensor 56 is not limited to these shapes, and may be a straight rod. In FIG. 3, reference numeral 57 denotes a cylindrical metal body having a protrusion 58 for mitigating the electric field, which is embedded in one end of the cylindrical portion 59 of the solid insulating layer 70. Reference numeral 60 denotes a metal attachment body attached to the insulating rod 14.
第５図は真空しや断器の開極時に測定する真空
度劣化検出部の実施例を示す構成図で、絶縁燥作
ロツド１４に取付られたセンサ５６はケーブル４
６を介して増巾器６１に接続され、この増巾器６
１の出力はオシロスコープ６２に入力させて、オ
シロスコープ６２により波形を観測する。なお、
このオシロスコープ６２に代り（或いは併用し
て）として判定器６３を設け、入力された信号を
設定基準値と比較して波形を画面に映出すること
によつて真空度不良の際、警報および表示の信号
を出力するようにしてもよい。このような劣化検
出部を用いて真空しや断器の開極時における種々
の負荷についての静電容量を測定した結果は
0.0042〜0.2μFであり、この範囲で波形の観測が
容易に行なうことが出来た。 FIG. 5 is a configuration diagram showing an embodiment of a vacuum degree deterioration detection unit that measures when a vacuum chamber or disconnector is opened.
6 to an amplifier 61, this amplifier 6
The output of 1 is input to an oscilloscope 62, and the waveform is observed using the oscilloscope 62. In addition,
A determiner 63 is provided in place of (or in combination with) this oscilloscope 62, and by comparing the input signal with a set reference value and displaying the waveform on the screen, an alarm and display can be issued in the event of a poor vacuum level. The signal may be output. The results of measuring the capacitance of various loads during opening of the vacuum shield and disconnector using such a deterioration detection unit are as follows.
It was 0.0042 to 0.2μF, and the waveform could be easily observed within this range.
この観測によりオシロスコープ６２に第６図Ａ
のように波形が現われないときには真空度が良
で、第６図Ｂのような電極間のパツシエン法則に
よる放電した商用周波数の波形が現われたときに
はそれが否であると判定できる。真空度不良が検
出出来る真空しや断器内の圧力は3.5×10-2〜６
×10Torrであつた。 As a result of this observation, the oscilloscope 62
When the waveform does not appear as shown in FIG. 6B, it is determined that the degree of vacuum is good, and when the waveform of the commercial frequency discharged between the electrodes according to Patsien's law as shown in FIG. 6B appears, it can be determined that the degree of vacuum is not good. The pressure inside the vacuum chamber that can detect poor vacuum is 3.5×10 -2 ~ 6
It was hot at ×10 Torr.
上記第５図のような構成で真空度劣化を検出し
たときの測定条件は電極間10mmギヤツプ、印加電
圧6.9KV／√３≒4KV（6.6KV配電系統の最大電
圧6.9KVのアース間電圧）であつた。 The measurement conditions for detecting vacuum deterioration with the configuration shown in Figure 5 above are a 10mm gap between the electrodes, and an applied voltage of 6.9KV/√3≒4KV (the voltage between ground and the maximum voltage of 6.9KV in a 6.6KV distribution system). It was hot.
従来固体全絶縁型真空しや断器の真空度良否判
定は、しや断器部を回路から取り外しその上で真
空しや断器の電極間距離を耐圧試験用に調節して
電圧を印加し、耐電圧法により調べていた。この
ため非常に手間がかかるとともに、元に戻す際の
人為的な誤りも生じていたが、実施例によれば絶
縁ロツドにセンサを装着し、ケーブルで検出器に
入力させるのみで真空しや断器を開極し、真空度
劣化時パツシエンの法則により電極間が放電する
とき出る放電信号をセンサで受信し、このセンサ
により受信された信号を電気的に処理して真空度
劣化を検出することができる。このため、真空度
劣化の検出に際して真空しや断器を回路から取外
す必要がないとともに真空しや断器の構造を変え
たり高電圧の別電源を設けたりする必要がなく、
簡単かつ安価に真空度劣化を正確に検出すること
ができる。 Conventionally, the vacuum level of a solid-state fully insulated vacuum shield is determined by removing the shield from the circuit, adjusting the distance between the electrodes of the vacuum shield for a withstand voltage test, and applying voltage. , was investigated using the withstand voltage method. This was extremely time-consuming and caused human error when returning to the original state, but according to the example, the sensor was attached to an insulated rod and the input was input to the detector via a cable, allowing the vacuum to be disconnected and disconnected. When the vacuum level deteriorates, the sensor receives a discharge signal that is generated when a discharge occurs between the electrodes according to Patsien's law, and electrically processes the signal received by this sensor to detect the vacuum level deterioration. I can do it. Therefore, when detecting vacuum deterioration, there is no need to remove the vacuum shield or disconnector from the circuit, and there is no need to change the structure of the vacuum shield or disconnector or provide a separate high-voltage power supply.
Deterioration of vacuum degree can be accurately detected easily and inexpensively.
上述の各実施例における真空度監視装置によれ
ば、既に使用されている完全にアースシールドさ
れている真空しや断器に適用できるものであり、
活線状態で真空度劣化を検知できる。また、検知
部の電源としては商用電源又は電池を用いてもよ
く、コンパクトとなり携帯に便利である。 According to the vacuum level monitoring device in each of the above-mentioned embodiments, it can be applied to a completely earth-shielded vacuum shield or disconnector that is already in use.
Deterioration of vacuum level can be detected in live line condition. Further, a commercial power source or a battery may be used as a power source for the detection section, which is compact and convenient for carrying.
以上のように本発明においては、真空しや断器
の開極時に放電により発生する商用周波信号を検
知するセンサと検出器を設けており、真空しや断
器の真空度劣化時に内部で放電したことを前記セ
ンサにより検知し、その検知信号を電気的に処理
して真空度劣化を検出することができるばかりで
なく、外部の電気的ノイズに影響されず感度よく
検出できる。更に真空度劣化の検出に際して真空
しや断器を回路から取外す必要がないとともに真
空しや断器の構造を変えたり高電圧の別電源を設
けたりする必要がなく、簡単かつ安価に真空度劣
化を正確に検出することができる。 As described above, in the present invention, a sensor and a detector are provided to detect the commercial frequency signal generated by discharge when the vacuum shield/breaker is opened, and when the vacuum level of the vacuum shield/breaker deteriorates, the internal discharge occurs. Not only can deterioration of the degree of vacuum be detected by detecting this with the sensor and electrically processing the detection signal, but also it can be detected with high sensitivity without being affected by external electrical noise. Furthermore, when detecting vacuum deterioration, there is no need to remove the vacuum shield or disconnector from the circuit, and there is no need to change the structure of the vacuum shield or disconnector or install a separate high-voltage power supply, making it easy and inexpensive to detect vacuum deterioration. can be detected accurately.
第１図は真空しや断器の縦断正面図、第２図は
本発明の一実施例を示す一部を破断した側面図、
第３図は本発明にセンサ装着部の拡大断面図、第
４図Ａから第４図Ｄはセンサの異なる例を示す構
成図、第５図は真空度検出部を示すブロツク線
図、第６図Ａ，Ｂはそれぞれ本発明の実施例の出
力波形図である。
１……真空しや断器、１４……絶縁ロツド、４
０……接地層、４５……箱体、５６……センサ。
FIG. 1 is a longitudinal sectional front view of a vacuum shredder, and FIG. 2 is a partially cutaway side view showing an embodiment of the present invention.
FIG. 3 is an enlarged sectional view of the sensor mounting part according to the present invention, FIGS. 4A to 4D are configuration diagrams showing different examples of the sensor, FIG. 5 is a block diagram showing the vacuum degree detection part, and FIG. Figures A and B are output waveform diagrams of embodiments of the present invention, respectively. 1... Vacuum shield disconnector, 14... Insulating rod, 4
0...Ground layer, 45...Box, 56...Sensor.
Claims (1)
脂によりモールドし、該モールドの表面を被覆す
るとともにその被覆部を接地電位に保つた接地層
と、この接地層の所定部位から導出され、前記真
空しや断器の負荷側に接続される可動リード棒に
連結された操作用絶縁ロツドと、この絶縁ロツド
に装着され、前記真空しや断器の内部放電により
生じる放電波信号を検知するセンサと、このセン
サに電気的に接続され、センサの出力を増幅して
画面に現れる波形から真空度の良否を判定する検
出器とからなる真空しや断器の真空度監視装置。1. A vacuum shield disconnector, a ground layer that is molded with synthetic resin, covers the surface of the mold, and maintains the covered portion at ground potential, and a ground layer derived from a predetermined portion of this ground layer. and an operating insulating rod connected to a movable lead rod connected to the load side of the vacuum shield and disconnector, and a discharge wave signal that is attached to this insulating rod and that generates a discharge wave signal generated by internal discharge of the vacuum shield and disconnector. A vacuum level monitoring device for a vacuum chamber disconnector, which consists of a sensor for detection, and a detector that is electrically connected to the sensor and amplifies the output of the sensor and determines the quality of the vacuum level from the waveform that appears on the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13313882A JPS5923423A (en) | 1982-07-30 | 1982-07-30 | Vacuum degree monitor for vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13313882A JPS5923423A (en) | 1982-07-30 | 1982-07-30 | Vacuum degree monitor for vacuum breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5923423A JPS5923423A (en) | 1984-02-06 |
| JPS6349844B2 true JPS6349844B2 (en) | 1988-10-06 |
Family
ID=15097644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13313882A Granted JPS5923423A (en) | 1982-07-30 | 1982-07-30 | Vacuum degree monitor for vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923423A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4537569B2 (en) * | 2000-04-24 | 2010-09-01 | 三菱電機株式会社 | Vacuum insulated switchgear and manufacturing method thereof |
| JP4686555B2 (en) * | 2008-01-09 | 2011-05-25 | 株式会社日立製作所 | Vacuum switchgear |
-
1982
- 1982-07-30 JP JP13313882A patent/JPS5923423A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5923423A (en) | 1984-02-06 |
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