JPS598225A - Vacuum degree monitor for vacuum breaker - Google Patents
Vacuum degree monitor for vacuum breakerInfo
- Publication number
- JPS598225A JPS598225A JP57116505A JP11650582A JPS598225A JP S598225 A JPS598225 A JP S598225A JP 57116505 A JP57116505 A JP 57116505A JP 11650582 A JP11650582 A JP 11650582A JP S598225 A JPS598225 A JP S598225A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- signal
- breaker
- vacuum breaker
- detector
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
Landscapes
- Measuring Fluid Pressure (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は真空しゃ断器の−に曾４空度幣１視装置ｆ＜＜
、 ＋こ関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vacuum circuit breaker for
, + related.
一般に真空しゃ断器はその真空度がＩＱ Ｔｏｒｒ以
下の圧力で正常なしゃ肋能力を有しているが、この真空
度はしゃ断器内部からの成田カ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ｔＩ′とｆとよって劣
化し、しゃ断能力が低下することかある。このため、真
空しゃ断器の１９・用時においてはその真空度を１視す
ることが性能保証」−から必萩欠くべからさるものとな
っている。Generally, a vacuum breaker has normal breaking capacity at a vacuum level of IQ Torr or less, but this vacuum level is limited by the amount of Narita scum from inside the breaker and the slowness from joints such as welding and brazing. The leakage tI' and f may cause deterioration and reduce the shutoff ability. For this reason, when using a vacuum breaker, it is essential to pay close attention to its degree of vacuum to ensure its performance.
そこで従来においては、真空しゃ断器内部に放電電極を
設けるとともに別電源により高耐圧を印加し、この際の
放電状態が真空度により変化することを利用【−で真空
度のチェックを行うなどしていたが、このような方法で
は真空しゃ断器の−Ｍ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った。又
、真空度のチェック１こ際しては真空しゃ断器を回路か
ら切離した場合は真空しゃ断器の可動電極を固定電極か
ら真空度劣化１ど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、非常に面倒であった。Therefore, in the past, a discharge electrode was installed inside the vacuum breaker and a high withstand voltage was applied from a separate power source, and the discharge state at this time changed depending on the degree of vacuum. However, with this method, the -M construction of the vacuum breaker becomes complicated and a separate high-voltage power source must be prepared, making it expensive. Also, check the degree of vacuum (1) If the vacuum breaker is disconnected from the circuit, open the movable electrode of the vacuum breaker from the fixed electrode by a distance that is likely to cause discharge, and connect it to a separate power source. A high voltage was applied to the chamber, 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.
本発明は上記の欠点を除去して、放′に電極や高電圧の
別電源を必要とせず、かつ真空しゃ断器を回路に接続し
たままでその真空度のチェックを行うことができるとと
もに真空度のチェックを簡単かつ安価に行うことができ
、しかも自己診断機能をもできる真空しゃ断器の真空度
す１°（１視装置Ｆ＋゛を提供するこさを目的とする。The present invention eliminates the above-mentioned drawbacks, does not require electrodes or a separate high-voltage power source, and allows the vacuum level of the vacuum breaker to be checked while it is connected to the circuit. The purpose of the present invention is to provide a 1 degree (1 degree F+) vacuum breaker vacuum breaker that can be easily and inexpensively checked and also has a self-diagnosis function.
以下本発明の実施例を図面とともに説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図１こおいて、Ｉは真空しゃ断器で、真空しゃ断器
１は絶縁筒２の両端に金（（４製の端板３．ｔを数句け
て真空容器を形成し、端板３には固定ＩＪ−ド５を挿着
する。Ｔｈ、？もｌこ端板μｔとはベローズ６を介し２
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１＠ ｓおよび可
＃）Ｊ電極９を暇付ける。又、絶ＲｆＩ′ｉ１２の中間
ｔこはしゃ断時電極８ 、９ ｊ？ｔｌｌこ発生する金
用蒸気か絶縁筒２の内面に付層するのを防止するための
７−ルド１０を喉付ける。１１ 、１２は補助シールド
、１３ 、１４は外部接続導体、１５は集電部である。In FIG. 1, I is a vacuum breaker, and the vacuum breaker 1 is made by attaching several end plates 3.t made of gold ((4) to both ends of an insulating tube 2 to form a vacuum container Insert the fixed IJ-board 5 into 3.
A movable lead 7 is movably inserted therein, and fixed electrodes 1@s and J electrodes 9 are attached to the tips of the fixed lead 5 and the movable lead 7, respectively. Also, the intermediate t of the absolute RfI'i12 is the electrode 8, 9j? A shield 10 is attached to the throat to prevent the generated gold vapor from forming a layer on the inner surface of the insulating cylinder 2. 11 and 12 are auxiliary shields, 13 and 14 are external connection conductors, and 15 is a current collector.
１６は真空しゃ断器ｌの近傍ｔと配設されるべき電磁波
佃号受信部祠、たとえばアンテナで、このアンテナ１６
は接続線１７により・検出器１８に接続されている。検
出器１８は自己診断用発振器４θ、増幅器１９、判定部
２（）、電源部２ノおよび表示部〃から構成さ才１てい
る。Reference numeral 16 denotes an electromagnetic wave signal receiving part, for example, an antenna, which should be placed near the vacuum breaker l.
is connected to the detector 18 by a connecting line 17. The detector 18 is composed of a self-diagnosis oscillator 4θ, an amplifier 19, a determining section 2, a power supply section 2, and a display section.
第２図Ａは検出器１８の詳ｉｆ＋ｔｌを示すブロック図
で、２３はアンテナ１６で検出した検出信号を増幅する
バッファアンプ、２４はバッファアンプ２３の出力信号
（第２図Ｂに示すＳ、 ）から２〜２０Ｋ Ｈｚの周波
数成分のみを通過させるバンドパスフィルタである。FIG. 2A is a block diagram showing details of the detector 18 if+tl, where 23 is a buffer amplifier that amplifies the detection signal detected by the antenna 16, and 24 is the output signal of the buffer amplifier 23 (S shown in FIG. 2B). This is a bandpass filter that only passes frequency components from 2 to 20 KHz.
前ハｌシバツファアンプ２３の入力端に詳細を後述する
自己診断用発振器４θからバンドパスフィルタ２４の一
ヒ下である２ＫＨｚ近傍１１２０ Ｋ Ｉｌｚ近傍夫々
の周波数信号を人力させる。この周波数信号が人力され
て資報９表示等が動作すれば、１炙出器１８の検出機能
は良好であることが判断できる。又、フィルタ２４を１
市過する２〜２０ Ｋ ＩＩＺ以外の周波数信号をバッ
ファアンプ２．９１こ入力させた警報９表示等が動作し
なければ検出器は良好であると判断できる。Frequency signals near 2 KHz and near 1120 K Ilz, which are one step below the band pass filter 24, are manually inputted to the input terminal of the front buffer amplifier 23 from a self-diagnosis oscillator 4θ, the details of which will be described later. If this frequency signal is manually input and the information 9 display etc. operate, it can be determined that the detection function of the first roaster 18 is good. Also, the filter 24 is
It can be determined that the detector is in good condition if the alarm 9 display, etc., in which a frequency signal other than the frequency signal of 2 to 20K IIZ that is being passed is input to the buffer amplifier does not operate.
前６１シバンドパスフイルタ２４の出力信号（第２図Ｂ
に示すＳｔ ）はアンプ２５により増幅され、この増幅
出力信号（第２図Ｂｌこ示すａＳ ）は第１の比較器Ｘ
に人力されて所定の基準電圧と比較される。第１の比較
器Ｘの出力信号（第２図Ｂに示す８４）は積分器ｉで積
分され、この積分出力信号（第２図Ｂに示す日、）は第
２の比較器列に入力さイ１で第２の比較型層の所定の基
準電圧と比較され、その出力（こ第２図Ｂに示すＳ６の
信号を送出する。この信号は９１４１＆及び表示信号と
なる。The output signal of the front 61band pass filter 24 (Fig. 2B
St ) shown in FIG. 2 is amplified by the amplifier 25, and this amplified output signal (aS shown in FIG.
The voltage is manually input and compared with a predetermined reference voltage. The output signal of the first comparator In step A1, it is compared with a predetermined reference voltage of the second comparative layer, and its output (signal S6 shown in FIG. 2B) is sent out. This signal becomes the display signal 9141&.
なお、自己診断時（検出器の良否判定時）はスイツチ４
４の切替により自己診断用発振器栃の発振周波数信号を
バッファアンプ２３１こ入力させる。この信号はバンド
パスフィルタ２４の上限、下限のしゃ断層波数で、この
信号を人力させること番こよってフィルタ、増幅器等が
正′帛に動作しているかどうかの確認を行なう。前記発
振器４０は第６図に示すようにＯ’Ｒからなる充放電回
路４０ａと、充放電自動切替回路４１１）ｂ及びＪ１ρ
Ｉ隅回路４０ｃから構成される。前記充放電回路４０ａ
はＯＲの時定数を変えて、バンドパスフィルタ２４の上
下である２ＫＨｚ近傍と２０ Ｋ Ｈｚ近傍夫々の周波
数及び２〜２０ Ｋ ｌｌｚの周波数以外６周波数に予
め設定されている。また、充放電自動切替回路４０ｂは
ンユミット回路から形成され、前記充放電回路４０ａの
出力が規定電、圧に達したかどうかの判定及び極性反転
の切替操作を行なう。前記増幅回路４０ ｃは検出器１
８に違］合する規定の電圧番こまで入力１Ｆ圧を増幅す
るものである。In addition, during self-diagnosis (when determining the quality of the detector), switch 4
By switching 4, the oscillation frequency signal of the self-diagnosis oscillator Tochi is inputted to the buffer amplifier 231. This signal is the upper limit and lower limit cutoff wave number of the bandpass filter 24, and by manually inputting this signal, it is confirmed whether the filter, amplifier, etc. are operating properly. As shown in FIG. 6, the oscillator 40 includes a charge/discharge circuit 40a consisting of an O'R, an automatic charge/discharge switching circuit 411)b, and a
It is composed of an I corner circuit 40c. The charging/discharging circuit 40a
are set in advance to 6 frequencies other than frequencies near 2 KHz and 20 KHz above and below the bandpass filter 24 and frequencies from 2 to 20 Kllz by changing the time constant of the OR. Further, the automatic charging/discharging switching circuit 40b is formed of a unit circuit, and performs a determination as to whether the output of the charging/discharging circuit 40a has reached a specified voltage or voltage, and performs a polarity reversal switching operation. The amplifier circuit 40c is the detector 1
The input 1F voltage is amplified to a specified voltage number that is different from 8.
次に上記実施例の動作について述べる（こ上記構成にお
いて、真空しゃ断器１は図示しない操作装置により可動
リード７を動かし、電極８．９を接離して投入、しゃ断
を行うが真空しゃ断器１のしゃ断状？、１における等価
回路１凶を第３図に示す。図において１．Ｗ 、 ２９
は夫々真空しゃＶＪｒ器１め設閘された回路の電源およ
び負荷、 ｒ 、 ３．１は夫々可動リード５の真空容
器内の部分および固定電極６８と７一ルドＺθ間の抵抗
および静電８ｔＬ 、’３２ 、３３は夫々可動リード
７の真空容器内の部分および可動市、極９と７一ルド１
０間の抵抗および静電容に、３４ ａ 。Next, the operation of the above embodiment will be described. The equivalent circuit 1 in the cutoff state ?, 1 is shown in Figure 3. In the figure, 1.W, 29
are the power supply and load of the circuit installed in the vacuum breaker VJr 1, respectively, r and 3.1 are the resistance and static electricity 8tL between the part of the movable lead 5 inside the vacuum container and the fixed electrode 68 and the lead Zθ, respectively. , '32 and 33 are the part of the movable lead 7 inside the vacuum vessel and the movable lead 7, poles 9 and 71, respectively.
For resistance and capacitance between 0 and 34 a.
３４ｂは夫々絶縁筒２の抵抗、話は／−ルド１０と大地
間の静電容量、３６．３７は夫々しゃ断状態における電
極８．９間の抵抗および静電谷ｈｔである。真空しゃ断
器Ｉの内部の真空度が劣化した場合即ち内部圧力が上昇
した場合、真空中の誘ｍＩｓと大気中の誘電率がほぼ等
しいために静電容ｆｄｌ ３１ 、 ＪＪ 。34b is the resistance of the insulating tube 2, the capacitance between the lead 10 and the ground, and 36.37 is the resistance between the electrodes 8.9 and the electrostatic valley ht in the cutoff state, respectively. When the degree of vacuum inside the vacuum breaker I deteriorates, that is, when the internal pressure increases, the capacitance fdl 31 , JJ increases because the dielectric constant in the vacuum is almost equal to the dielectric constant in the atmosphere.
Ｊはほとんど賀化しないが、抵抗ｇｏ、ｓｚ、：ｖ；は
パラ／工／の法則により著しく低下する。このため、絶
縁筒２により同定側および可動１ｐ１のいずれとも絶縁
され、浮遊電位を有するシールド１ｏと各電極８．９と
の間においては投入状態およびしゃ断状態にかかわらず
放電が生じ、又電極８，９間Ｉこよ；いてはしゃ断状態
においてのみ放電が生じる。この放電は負荷側にケーブ
ル（静電容量）接続、誘導負荷線あるいは真空しゃ断器
のリードの静電容量によって変化する。J hardly decreases, but the resistance go, sz, :v; decreases significantly due to the law of para/k/. Therefore, discharge occurs between the shield 1o, which is insulated from both the identification side and the movable part 1p1 by the insulating tube 2 and has a floating potential, and each electrode 8.9 regardless of whether it is in the on state or the off state. , 9, a discharge occurs only in the cut-off state. This discharge changes depending on the cable (capacitance) connection on the load side, the inductive load line, or the capacitance of the vacuum breaker lead.
第４図（Ａｌは＾空しゃ断器１の真空度が正常なときの
電極間電圧を示し、第４図（Ｂ）はアンテナ１Ｇによる
受信信号を示す。すなわち真空度が正常なときは、第４
図（Ａ）に示すよう（こ電極８．９間の電圧波形は正弦
波であシ、アンテナ１６には真空しゃ断器以外の回転機
、笈圧器、旧型などから発生すると思われる２Ｋ）＋ｚ
以下の商調波を含む信号が入力される。第５図（Ａｌお
よび（Ｂ）は真空しゃ断器１の真空度が劣化した場合の
極間電圧およびアンテナ１６の受信信号を示し、電極８
と９間の極間′電圧は、放電が始まると、第５図（Ａ）
に示すようにある電圧以上１こは上昇せずリップルする
。このリップル開始時に第５図（Ｂ）に示すように２〜
２０ Ｋ Ｉｌｚの高周波を會む電磁波信号が発生し、
この信号を検出し、判定することにより真空しゃ断器Ｉ
の真空度劣化を倹知できる。この場合、極間および真空
しゃ断脂身外の他の部分でコロナ放電が発生しても・信
号波形は異なるため検出特性には伺ら影響がない。Figure 4 (Al indicates the voltage between the electrodes when the degree of vacuum of the air breaker 1 is normal, and Figure 4 (B) shows the received signal by the antenna 1G. In other words, when the degree of vacuum is normal, the voltage between the electrodes is 4
As shown in Figure (A) (the voltage waveform between the electrodes 8 and 9 is a sine wave, the antenna 16 has a 2K voltage that is likely to be generated from a rotating machine other than a vacuum breaker, a stove, an old model, etc.) +z
A signal containing the following quotient harmonics is input. FIG. 5 (Al and FIG. 5B) shows the voltage between the poles and the received signal of the antenna 16 when the degree of vacuum of the vacuum breaker 1 has deteriorated, and the electrode 8
When the discharge starts, the electrode voltage between and 9 is as shown in Fig. 5 (A).
As shown in Figure 2, the voltage does not rise above a certain voltage and ripples. At the start of this ripple, as shown in Figure 5 (B), 2~
An electromagnetic wave signal that meets a high frequency of 20 K Ilz is generated,
By detecting and judging this signal, the vacuum breaker I
You can know the deterioration of vacuum level. In this case, even if corona discharge occurs between the electrodes and other parts outside the vacuum insulation body, the signal waveforms are different, so there is no effect on the detection characteristics.
真空しゃ断器Ｉの真空度が劣化時において、アンテナ１
６が電磁波信号を受信する。真空度を５×１０ 〜３Ｑ
Ｑ Ｔｏｒｒ 間で変えて測定した′電磁波は負泄Ｉ
側の大地間静電容量が０．００４２μＦの時１０〜１４
Ｋ ＩＩ７．０．０５μＦ の時２−８ Ｋ ｌｌｚ
、 ０．２μＦ又は０．２／ＪＦ以上の時２〜２０
Ｋ Ｈｚの周波数を含んでおり、０、００４２μＦの時
の電磁波の波形（オパルス的であった。負荷側の静電容
量が小さい時は０．２μＦ程度の静電容量を大地間に接
続ずれはよい。第２図Ａ。When the degree of vacuum of vacuum breaker I deteriorates, antenna 1
6 receives the electromagnetic wave signal. Vacuum degree 5×10 ~3Q
The electromagnetic waves measured by changing between Q Torr and I
10 to 14 when the side ground capacitance is 0.0042μF
K II7.0.05μF 2-8 Kllz
, 2 to 20 when 0.2μF or 0.2/JF or more
It contains a frequency of kHz, and the waveform of the electromagnetic wave at 0,0042 μF (opulse-like). When the capacitance on the load side is small, the capacitance of about 0.2 μF is Good.Figure 2A.
Ｂに示すようにバッファアンプ２３はこれを増幅して出
力信号日、を送出する。この出力信号日、は）（ンドパ
スフィルタ２４に人力され、その信号中２〜２０Ｋ ｌ
ｌｚの周波数成分のみがフィルタ２４から出力される。As shown in B, the buffer amplifier 23 amplifies this and sends out an output signal. This output signal is input manually to the second pass filter 24, and the output signal is 2 to 20K l.
Only the lz frequency component is output from the filter 24.
この出力信号Ｂ、はアンプ２５により増幅される。This output signal B is amplified by an amplifier 25.
この増幅信号Ｓ３は第１の比較器２６に人力される。This amplified signal S3 is input to the first comparator 26.
第１の比較器Ｘにおいては、信号日、と所定の基準箱；
圧とを比較し７て信号日、を積分器２７１こ人力する。In the first comparator X, the signal date and a predetermined reference box;
After comparing the pressure and the signal, the integrator 271 inputs the signal.
４６分器Ｉは第１の比較器％の偏差信号を積分して出力
信号Ｓ、を第２の比較器２８に人力する。第２の比←器
ｙは信号Ｓ、を所定の基準■１、圧と比較してその偏差
雷、圧信号Ｓ６を出力し警報器または表示器を動作させ
、真空度劣化が検出される。The 46 divider I integrates the deviation signal of the first comparator % and outputs an output signal S to the second comparator 28. The second ratio y compares the signal S with a predetermined standard (1) and the pressure, and outputs a pressure signal S6, which is a deviation thereof, to operate an alarm or an indicator, and the deterioration of the degree of vacuum is detected.
実験測定結果（こよれば、長さが３０Ｌ：Ｍ、、断面積
が１．２５ｆｆｉ１Ｎのビニール被覆銅線ケーブルをア
ンテナ１６に使用したとき、１ｍ離れた位置にある真空
度１０ ’ Ｔｏｒｒ 程度の６．９ＫＶ用真窒しゃ
断器の開極時に負荷側に０．２ ｔｉ Ｆの静電Ｗ ｔ
、を大地間に接続し例えば６．９ ／４ ＊ ４ｘｖの
電圧を印加すると電極間にて放電した。これを上記アン
テナ１６にて捕え検出器１８に入力すると、増幅器から
の信号はゲインが１０，０００ のとき０．６Ｖの振
れ幅となった。Experimental measurement results (According to this, when a vinyl-coated copper cable with a length of 30L:M and a cross-sectional area of 1.25ffi1N is used for the antenna 16, a 0.2 ti F static electricity W t on the load side when the 9KV true nitrogen breaker opens.
, was connected to the ground and a voltage of, for example, 6.9/4*4xv was applied, causing a discharge between the electrodes. When this was captured by the antenna 16 and inputted to the detector 18, the signal from the amplifier had an amplitude of 0.6V when the gain was 10,000.
次に閉極時における真空度の劣化した第２実施例を説明
する。閉極時には第３図の電１極８，９間の抵抗Ｘおよ
び静電容量Ｗが短絡されたのが真空しゃ断器Ｉの閉極状
態における等何回路である。Next, a second embodiment in which the degree of vacuum at the time of pole closing deteriorates will be described. When the vacuum breaker I is closed, the resistance X and capacitance W between the electrodes 8 and 9 shown in FIG. 3 are short-circuited in the circuit in the closed state of the vacuum breaker I.
こ・の第２実施例においてはアンテナを真空しゃ断器１
の近傍たとえば１ｍの位置に配設するものである。In this second embodiment, the antenna is connected to the vacuum breaker 1.
It is arranged at a position near, for example, 1 m.
上記第２実施例の真空度監視装置によれば、固定リード
５、可動リード７、固定電極８および可動Ｗ、極９と、
浮遊電位である中間シールド１０間で真空度劣化時に放
電が行なわれる。この場合、リード棒および電極と中間
シールド間の固有静電容置は、開極時の電極間の見掛は
上の静電５容量に比べて小さいためか、中間７−ルド１
０と大地間の静電容量３５が小さいため放電、エネルギ
ーも小さく信号としても小さくなる。この場合、前述し
たように、例えば１ｍ離れた位Ｉ程にある真空度ＩＱ
Ｔｏｒｒ程度の真空しゃ断器番こ６．９ ＫＶ、σ＝
４ＫＶの電圧印加をすると放電した。これをアンテナ
で捕え検出器に人力すると増幅器からの信号はゲインが
１０，０００のとき０．３Ｖの振れ幅となった。According to the vacuum monitoring device of the second embodiment, the fixed lead 5, the movable lead 7, the fixed electrode 8, the movable W, the pole 9,
A discharge occurs between the intermediate shields 10 which are at a floating potential when the degree of vacuum deteriorates. In this case, the specific electrostatic capacitance between the lead rod and electrode and the intermediate shield may be because the apparent capacitance between the electrodes when the electrodes are open is smaller than the capacitance shown above.
Since the capacitance 35 between 0 and the ground is small, the discharge energy is small and the signal is also small. In this case, as mentioned above, the degree of vacuum IQ is approximately 1 m away, for example.
Torr vacuum breaker number 6.9 KV, σ=
When a voltage of 4KV was applied, a discharge occurred. When this was captured by an antenna and inputted to a detector, the signal from the amplifier had an amplitude of 0.3V when the gain was 10,000.
上記のようにして真空度劣化を検出する前に、通常前述
した検出器１８の良否の判定を行なう。すなわち検出器
１Ｂの自己診断を予め行なう。それにはまず、゛スイッ
チ４４を切替えて自己診断用発振器和からバンドパスフ
ィルタ２４の上限と下限である２ Ｋ ｋ近傍と２０
Ｋ ｒｌｚ近傍夫々の周波数信号を検吊器１８の人力に
与える。この信号により検出器１８が良好であると検出
器の出力から警報１表示等の信号が出力される。また、
前記発振器和からバンドパスフィルタＭを通過する２〜
２０ＫＨｚ以外の信号を検出器１日に与えてその出力の
警報０表示等の信号が送出されなければ検出器１８が良
好と判断できる。これらの動作を行なった後、真空しゃ
断器ｌの真空劣化の検出を行えば、その検出粘度および
信頼性の向上を図ることができる。Before detecting the deterioration of the degree of vacuum as described above, the quality of the detector 18 described above is usually determined. That is, a self-diagnosis of the detector 1B is performed in advance. To do this, first, change the switch 44 and use the oscillator sum for self-diagnosis to determine the upper and lower limits of the bandpass filter 24, which are around 2K and 20K.
Each frequency signal in the vicinity of Krlz is applied to the human power of the hoist detector 18. Based on this signal, if the detector 18 is in good condition, a signal such as an alarm 1 display is output from the output of the detector. Also,
2~ which passes from the oscillator sum through a bandpass filter M.
If a signal other than 20 KHz is applied to the detector for one day and no output signal such as an alarm 0 display is sent out, it can be determined that the detector 18 is in good condition. After performing these operations, if the vacuum deterioration of the vacuum breaker I is detected, the detected viscosity and reliability can be improved.
上記実施例における検出器１８にはアンテナ１６を設け
たものを用いたが、真空しゃ断器１が接地された筐体内
に収納さｆまた場合には電磁波を筺体外部で検知できな
い。このため、第７図【こ示すように真空しゃ断器Ｉの
操作部の絶縁ロッド４１にセ／す（例えば金属製円弧状
の半円リング）を嵌め込んで、このセンサの出力信号を
増幅器１９１こ入力させるようにして真空劣化を検出し
てもよい。Although the detector 18 in the above embodiment is equipped with an antenna 16, if the vacuum breaker 1 is housed in a grounded casing, electromagnetic waves cannot be detected outside the casing. For this reason, as shown in FIG. Vacuum deterioration may be detected by inputting this information.
なお、アンテナ１６とセンサを検出器ｉｓ ｌこ両方と
も設けた場合には切替器を設けて、その都度切替器でア
ンテナを検出するか、センサで検出するかを選択するよ
うにしてもよい。Note that when both the antenna 16 and the sensor are provided, a switch may be provided and the switch may be used to select whether to detect the antenna or the sensor each time.
ここで第７図について簡単に各別の説明を行なう。第７
図１こおいて上記実施例と同一部分には同一符号を付し
て述べるに、４２はばね、４３は負荷容ｈ；である。Here, each part of FIG. 7 will be briefly explained. 7th
In FIG. 1, the same parts as in the above embodiment are given the same reference numerals, and 42 is a spring, and 43 is a load capacity h.
従来、タンク型真空しゃ断器内にある真空バルブの真空
度の良否は、油槽あるいはガス槽内の絶縁油あるいは絶
縁性ガスを抜き取り、その上で真空バルブの電極間距離
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
ば倒ら油槽、ガス槽をいじることなく、真空しゃ断器を
開極し、真空度劣化時バッフエンの法則により’ｉｔｔ
極間が放′−するとき又は閉極時には固定リード。Conventionally, the quality of the vacuum of the vacuum valve in a tank-type vacuum breaker was determined by draining the insulating oil or gas from the oil tank or gas tank, and then adjusting the distance between the electrodes of the vacuum valve for pressure resistance tests. A voltage was applied using the method, and the test was conducted using the withstand voltage method. This was very time-consuming and caused human error when putting it back together, but according to the example, the vacuum breaker was opened without having to tamper with the fallen oil tank or gas tank, and the vacuum level was According to Buffen's law during deterioration, 'itt
Fixed lead when the pole gap is open or closed.
固定′に極、可動′ｔｋＬ極および可動リードとシール
ド間が放電するとき真空しゃ断器から出る放電信号をア
ンテナあるいはセンサで受信し、自己ｔａ能能診断装置
を設けたものであるから信頼性および粘度の商い真空し
ゃ断器の真空度監視装置を得ることができる。またアン
テナあるいはセンサにより受信された信号を電気的に処
理して７１度劣化を検出することができると共１こ本発
明では真空度劣化の検出に際して真空しゃ断器を回路か
ら取外す必要がないとともに真空しゃ断器の構造を笈え
たり１？１」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崎に検出することができ
る。The antenna or sensor receives the discharge signal from the vacuum breaker when a discharge occurs between the fixed pole, the movable TKL pole, the movable lead, and the shield, and is equipped with a self-ta performance diagnostic device, which improves reliability and reliability. A vacuum level monitoring device for a vacuum breaker can be obtained based on the viscosity. In addition, it is possible to detect 71 degree deterioration by electrically processing the signal received by the antenna or sensor. There is no need to change the structure of the circuit breaker or install a separate power supply with a voltage of 1 to 1.
Deterioration of vacuum degree can be 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は、既に
使用されている異空しゃ断器１こ適用できるものであり
、完全にアースシールドされているものも含む、はとん
どの機種に適月］できるとともに、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。なお、＾中度劣化検出感度は放電ギャップが犬
のは・うが商真空でも検出可能となる。又真空度劣化の
圧力の値はほぼＩＱ Ｔｏｒｒ 台から１ＱＱＴｏｒ
ｒ台である。The vacuum level monitoring device in each of the above embodiments can be applied to one alien breaker that is already in use, and is suitable for most models, including those that are completely earth shielded. ], and can also detect deterioration of the vacuum level while the line is live. 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. In addition, moderate deterioration detection sensitivity can be detected even when the discharge gap is a dog's vacuum. Also, the pressure value for vacuum deterioration is approximately IQ Torr to 1QQ Torr.
It is r units.
以上のように本発明においては、真空しゃ断器の外部に
放電時に発生ずる２〜２０ Ｋ、 Ｈｚの高周波を含む
電磁波信号をセンサで検出してバンドパスフィルターを
備えた検出器に供給するとともに、この検出器に自己診
断用信号を与えて予め検出器の良否を判定させてから真
空劣化の検出を行なうようにしたので、その真空度劣化
の検出精度および信頼性の向上を図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ゃ断器
を回路から取外す必要がないとともに＾空しゃ断器の構
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番こ検出することが
できる。As described above, in the present invention, an electromagnetic wave signal containing a high frequency of 2 to 20 K and Hz generated during discharge outside the vacuum breaker is detected by a sensor, and is supplied to a detector equipped with a bandpass filter. Since a self-diagnosis signal is given to this detector to determine the quality of the detector in advance and then vacuum deterioration is detected, it is possible to improve the detection accuracy and reliability of vacuum deterioration. It can be detected with high sensitivity without being affected by external electrical noise. Furthermore, there is no need to remove the vacuum breaker from the circuit when detecting vacuum deterioration, and there is no need to change the structure of the air breaker or provide a separate high-voltage power supply, making it easy and inexpensive to accurately detect vacuum deterioration. This can be detected.
第１図は本発明の第１の実施例に係る真空度監世１装置
Ｗを備えた真空しゃ断器の縦断正面図、第２図（Ａ）は
検出部の詳細を示すブロック線図、第２図（Ｂｌは同上
（Ａ）の出力図、第３図は第１の実施例１こおりる真空
しゃ断器のしゃ断状態における等価回路図、第４図（Ａ
ｌ 、 （Ｂｌおよび第５図（Ａｔ 、 （Ｂｌは第１
の実１ｊｉｆｘ例における真空しゃ断器のＷＪ１作波形
図、第６図は自己診断用発振器のブロック図、第７図は
本発明の他の実施例を示す概略的構成説明図である。
Ｉ・・・九空しゃ断器、１６・・・アンテナ、１８・・
・検出器、１９・・・増幅器、加・・・判定部、 ４０
・・・自己診断用信号器。FIG. 1 is a longitudinal sectional front view of a vacuum breaker equipped with a vacuum degree monitoring 1 device W according to the first embodiment of the present invention, FIG. 2(A) is a block diagram showing details of the detection section, Figure 2 (Bl is the output diagram of the same as above (A), Figure 3 is the equivalent circuit diagram of the first embodiment 1 vacuum breaker in the cut-off state, Figure 4 (A)
l, (Bl and Fig. 5 (At, (Bl is the first
FIG. 6 is a block diagram of a self-diagnosis oscillator, and FIG. 7 is a schematic configuration diagram showing another embodiment of the present invention. I... Kukuu breaker, 16... Antenna, 18...
・Detector, 19...Amplifier, Addition...Judgment unit, 40
...Signal device for self-diagnosis.
Claims (1)
空しゃ断器において、真空しゃ断器の外部近傍に設けら
れ、前記内部放電により生じる電磁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、２ＫＨｚから
２０Ｋ ＦＴｚの周波数成分のみを通溝させるバンドパ
スフィルタを備えた検出器と、この検出器の前記センサ
が接続される入力端に接続され、前記フィルタの周波数
のうち２ＫＨ２近傍と２０ Ｋ Ｉｌｚ近傍の夫々及び
、２〜２０ＫＨｚ以外の周波数をそれぞ、れ各別に発振
する自己機能診断用装置とを設けたことを特徴とする真
空Ｅ７や断器の真空度監視装置＾１゜(1) In a vacuum breaker that generates internal discharge when the internal vacancy deteriorates, there is a sensor installed near the outside of the vacuum breaker that detects the electromagnetic wave signal generated by the internal discharge, and an electrical connection to this sensor. A detector is connected to a bandpass filter that passes only frequency components from 2KHz to 20K FTz; A vacuum degree monitoring device for a vacuum E7 and a disconnector, characterized by being equipped with a self-function diagnostic device that separately oscillates frequencies around 20K Ilz and frequencies other than 2 to 20KHz.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116505A JPS598225A (en) | 1982-07-05 | 1982-07-05 | Vacuum degree monitor for vacuum breaker |
| US06/506,662 US4553139A (en) | 1982-07-05 | 1983-06-22 | Vacuum monitor for vacuum interrupter |
| DE8383106356T DE3376164D1 (en) | 1982-07-05 | 1983-06-29 | Vacuum monitor for vacuum interrupter |
| EP83106356A EP0098523B1 (en) | 1982-07-05 | 1983-06-29 | Vacuum monitor for vacuum interrupter |
| KR1019830002967A KR920008836B1 (en) | 1982-07-05 | 1983-06-30 | Vacuum monitor for vacuum interrupter |
| CA000431732A CA1208337A (en) | 1982-07-05 | 1983-07-04 | Vacuum monitor for vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116505A JPS598225A (en) | 1982-07-05 | 1982-07-05 | Vacuum degree monitor for vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS598225A true JPS598225A (en) | 1984-01-17 |
Family
ID=14688796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57116505A Pending JPS598225A (en) | 1982-07-05 | 1982-07-05 | Vacuum degree monitor for vacuum breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS598225A (en) |
| KR (1) | KR920008836B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6180722A (en) * | 1984-09-27 | 1986-04-24 | 株式会社東芝 | Vacuum switch |
| US6952102B2 (en) | 2000-12-12 | 2005-10-04 | Kabushiki Kaisha Meidensha | Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7499255B2 (en) * | 2006-01-31 | 2009-03-03 | Thomas & Betts International, Inc. | Vacuum-type electrical switching apparatus |
| KR101723198B1 (en) * | 2017-01-20 | 2017-04-05 | 세아전설(주) | Insulation breakdown test equipment using paschens law and method thereof |
| KR20200129834A (en) | 2019-05-10 | 2020-11-18 | 한국전기연구원 | Vacuum degree monitoring sensor and system for predicting a life of a vacuum interrupter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246478A (en) * | 1975-10-13 | 1977-04-13 | Tokyo Shibaura Electric Co | Device for detecting improper vacuum of vacuum switch |
-
1982
- 1982-07-05 JP JP57116505A patent/JPS598225A/en active Pending
-
1983
- 1983-06-30 KR KR1019830002967A patent/KR920008836B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246478A (en) * | 1975-10-13 | 1977-04-13 | Tokyo Shibaura Electric Co | Device for detecting improper vacuum of vacuum switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6180722A (en) * | 1984-09-27 | 1986-04-24 | 株式会社東芝 | Vacuum switch |
| US6952102B2 (en) | 2000-12-12 | 2005-10-04 | Kabushiki Kaisha Meidensha | Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR840005555A (en) | 1984-11-14 |
| KR920008836B1 (en) | 1992-10-09 |
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