JP2010197132A - Vacuum circuit breaker vacuum tester - Google Patents

Vacuum circuit breaker vacuum tester Download PDF

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JP2010197132A
JP2010197132A JP2009040469A JP2009040469A JP2010197132A JP 2010197132 A JP2010197132 A JP 2010197132A JP 2009040469 A JP2009040469 A JP 2009040469A JP 2009040469 A JP2009040469 A JP 2009040469A JP 2010197132 A JP2010197132 A JP 2010197132A
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vacuum
circuit breaker
voltage
direct current
vacuum circuit
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JP5020273B2 (en )
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Katsutoshi Hiromasa
Yasuhiro Naka
Mitsuhiro Nonogami
康宏 中
勝利 広政
満洋 野々上
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Chugoku Electric Power Co Inc:The
中国電力株式会社
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<P>PROBLEM TO BE SOLVED: To provide a vacuum circuit breaker vacuum tester capable of shortening a test period, figuring out a decreased level of vacuum degree, and being applied to existing vacuum circuit breakers. <P>SOLUTION: The vacuum circuit breaker vacuum tester 10, used for a vacuum degree test of a vacuum circuit breaker 1, includes a DC current supplier 20 supplying a low voltage DC current to a main circuit of the vacuum circuit breaker 1, a high voltage generator 30 with a high voltage reactor 31 connected between a main circuit contact of the vacuum circuit breaker 1 and the DC current supplier 20, and a control device 40 determining quality of vacuum degree of a vacuum interrupter of the vacuum circuit breaker 1 by applying a high voltage induced at the high voltage reactor 31 between main circuit contacts of the vacuum circuit breaker 1 through opening the vacuum circuit breaker 1 under a condition of flowing the low voltage DC current to the main circuit of the vacuum circuit breaker 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、真空遮断器真空試験器に関し、特に、特別高圧の真空遮断器の真空度試験を行うのに好適な真空遮断器真空試験器に関する。 The present invention relates to a vacuum circuit breaker vacuum tester, in particular, of a preferred vacuum circuit breaker vacuum tester for performing vacuum test of the vacuum circuit breaker of extra high voltage.

従来、真空遮断器の真空インタラプタ(真空バルブ)の真空度を試験する方法としては、真空遮断器を開放状態にしたのちに、主回路接点(開極)間に試験電圧を印加して耐電圧試験を行う方法が主流である。 Conventionally, as a method of testing the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker (vacuum valve), after which the vacuum circuit breaker in the open state, the withstand voltage by applying a test voltage between the main circuit contact (opening) how to do the test is the mainstream. また、一部では、専用の真空センサーを真空遮断器に取り付ける方法も行われている。 Also, some have also been a method of attaching a dedicated vacuum sensor to the vacuum circuit breaker.

なお、下記の特許文献1には、真空度チェック用の停電および高圧電源装置を不要とし、真空度の判定を容易に実施し、メンテナンス作業などのコストを低減するために、真空バルブの開極時に真空バルブ内の接触子間に発生するアーク光のスペクトルを検出して電気信号を出力する検出部と、この電気信号に基づいて、スペクトルが絶縁ガスの輝線スペクトルを示すときに真空度が低下したことを判別して警報信号を出力する信号処理回路部とを設け、信号処理回路部を主回路とは非接触関係で設置した、真空遮断器の真空度監視装置が開示されている。 Incidentally, Patent Document 1 below, a power failure and a high voltage power supply for vacuum check is unnecessary, and easily implement the determination of the degree of vacuum, in order to reduce the cost of maintenance work, the vacuum valve opening a detection unit for outputting an electric signal by detecting the spectrum of the arc light at occur between the contacts in the vacuum valve, on the basis of the electrical signal, drop vacuum when the spectrum showing the emission line spectrum of the insulating gas was determined to be provided a signal processing circuit unit for outputting an alarm signal, the signal processing circuit section and the main circuit was placed in a non-contacting relationship, vacuum monitoring device of a vacuum circuit breaker is disclosed.
また、下記の特許文献2には、通常の使用状態で簡易にかつ適確に劣化程度を判断できるようにするために、真空インタラプタの両電極端に検電碍子を配設し、両検電碍子の分圧点間に変圧器の一次巻線を接続して、変圧器の二次電圧をサンプリングするサンプリンクホールド回路、各相の検出電圧を順次選択するマルチプレクサ、検出電圧をA/D変換するA/D変換器、演算・比較判定用のCPUおよびデータ記憶用のメモリなどを設け、運用開始時のデータを基準データとしてメモリに記憶し、その後の遮断器の「入」「切」指令時のデータと比較し、この比較結果に基づいて真空度および接点摩耗度など真空インタラプタの劣化程度を判定する、真空遮断器の劣化診断装置が開示されている。 Patent Document 2 below, in order to be able to determine the degree of degradation precisely where and easily in normal use, it arranged to Kenden insulator to both electrode ends of the vacuum interrupter, both electroscopic connect the primary winding of the transformer between the dividing point of the insulator, sump links hold circuit for sampling the secondary voltage of the transformer, a multiplexer for sequentially selecting each phase of the detection voltage, the detection voltage a / D converter a / D converter which, arithmetic and comparison determination CPU and for storing data in the memory or the like provided in the data at the start of operation is stored in the memory as reference data, "oN" "oFF" in the subsequent breaker command compared to when the data to determine the degree of deterioration of the vacuum interrupter, such as the degree of vacuum and the contact degree of wear, deterioration diagnosis apparatus for a vacuum circuit breaker is disclosed based on the comparison result.

特開平8−306279号公報 JP-8-306279 discloses 特開平10−255609号公報 JP 10-255609 discloses

しかしながら、高圧の真空遮断器では、開極間距離が短いので、低電圧の試験電圧を主回路接点間に印加することにより通常の遮断器開放状態で耐電圧試験を行うことができるが、特別高圧の真空遮断器では、開極間距離が長いので、通常の遮断器開放状態で耐電圧試験を行おうとすると高電圧が発生可能な大型の耐圧試験器が必要になる。 However, in the vacuum circuit breaker of a high pressure, because the short distance between the opening and may be carried out withstand voltage test in the normal circuit breaker open state by applying a test voltage of a low voltage between the main circuit contacts, special the high-pressure vacuum interrupter, since the opening distance is long, and if you try to withstand voltage test high voltage is needed a large withstand voltage tester that can be generated in a conventional circuit breaker open. このため、特別高圧の真空遮断器では、専用の治具を使用して真空遮断器の開極間距離を縮めることにより小型の耐圧試験器で耐電圧試験を行っているので、試験時間が長くなったりコストもかかったりするという問題があった。 Therefore, in the vacuum circuit breaker of extra high voltage, since performing a withstand voltage test in a small withstand voltage tester by reducing the opening distance of the vacuum circuit breaker using a dedicated jig, long test time made or cost there is a problem that it takes.

また、従来の主回路接点間に試験電圧を印加する方法では、耐電圧試験に耐えるか否かで判定しているので、真空度の低下度合いを把握することは難しいという問題があった。 In the method of applying a test voltage between conventional main circuit contact, since it is determined by whether withstand the withstand voltage test, it has been a problem that it is difficult to grasp the deterioration degree of vacuum.

従来の専用の真空センサーを真空遮断器に取り付ける方法では、既設の真空遮断器に真空センサーを取り付けるには真空遮断器のタンクを加工する必要があるので、新規に設置する真空遮断器に限定されるという問題があった。 In the method of attaching the conventional dedicated vacuum sensor to the vacuum interrupter, to attach the vacuum sensor to the vacuum interrupter of the existing because it is necessary to process the tank of the vacuum circuit breaker, it is restricted to a vacuum circuit breaker to be installed newly there is a problem that that.

本発明の目的は、試験時間の短縮化および真空度の低下度合いの把握が図れるとともに既設の真空遮断器にも適用可能な真空遮断器真空試験器を提供することにある。 An object of the present invention is to provide a vacuum circuit breaker vacuum tester also applicable to a vacuum interrupter of the existing with attained to grasp the degree of decrease of the shortening and the vacuum of the test time.

本発明の真空遮断器真空試験器は、真空遮断器(1)の真空度試験を行うのに用いられる真空遮断器真空試験器(10)であって、低圧直流電流を前記真空遮断器の主回路に供給するための直流電流供給手段(20)と、前記真空遮断器の主回路接点と前記直流電流供給手段との間に接続された高圧リアクトル(31)を備えた高電圧発生手段(30)と、前記低圧直流電流を前記真空遮断器の前記主回路に流した状態で該真空遮断器を開放させることにより、前記高圧リアクトルに誘起した高電圧を該真空遮断器の前記主回路接点間に印加して該真空遮断器の真空インタラプタの真空度の良否を判定するための真空度良否判定手段(41,42)とを具備することを特徴とする。 Vacuum circuit breaker vacuum tester of the present invention, there is provided a vacuum circuit breaker (1) vacuum circuit breaker vacuum tester used to perform the vacuum test (10), the main low pressure direct current of the vacuum interrupter a direct current supply means for supplying the circuit (20), the high voltage generating means comprising a high pressure reactor (31) connected between the main circuit contact and the direct current supply means of the vacuum circuit breaker (30 ) and the by opening the vacuum breaker in a state of low pressure direct current was flowed to the main circuit of the vacuum interrupter, between the main circuit contacts of the vacuum circuit breaker of a high voltage induced in the high pressure reactor applied to characterized by comprising a vacuum quality determination means for determining the quality of degree of vacuum in the vacuum interrupter of the vacuum circuit breaker (41, 42) with.
ここで、前記真空度良否判定手段が、前記真空遮断器を開放させたのちの該真空遮断器の前記主回路に流れる回路電流(I)の変化速度に基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定してもよい。 Here, the vacuum quality determining means, on the basis of the rate of change in the circuit current flowing in the main circuit of the vacuum circuit breaker After opens the vacuum circuit breaker (I), said vacuum of the vacuum circuit breaker acceptability degree of vacuum interrupter may determine.
前記真空度良否判定手段が、前記真空遮断器を開放させたときの該真空遮断器の開極間電圧(V)の正常時開極間電圧(V 0 )に対する変化量(ΔV)に基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定してもよい。 The vacuum quality determining means, based on a change amount ([Delta] V) for normal operation opening voltage of the vacuum circuit breaker opening voltage obtained while opening the vacuum circuit breaker (V) (V 0) it may determine the quality of the vacuum degree of the vacuum interrupter of the vacuum circuit breaker.
前記真空度良否判定手段が、前記真空遮断器を開放させたのちの該真空遮断器の前記主回路に流れる回路電流(I)の変化速度と、該真空遮断器を開放させたときの該真空遮断器の開極間電圧(V)の正常時開極間電圧(V 0 )に対する変化量(ΔV)とに基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定してもよい。 Vacuum when the vacuum quality determining means, that the the rate of change of circuit current flowing in the main circuit of the vacuum circuit breaker After opens the vacuum circuit breaker (I), opens the vacuum breaker based on the amount of change ([Delta] V) for normal operation opening voltage of the circuit breaker opening voltage (V) (V 0), also determine the quality of the vacuum degree of the vacuum interrupter of the vacuum circuit breaker good.
前記高電圧発生手段が、前記高圧リアクトルと並列に接続された異常電圧抑制用抵抗(32)をさらに備えてもよい。 The high voltage generating means may further comprise the high-pressure reactor and a resistor for connection anomaly voltage suppression in parallel (32).
前記直流電流供給手段が、前記低圧直流電流を前記真空遮断器の前記主回路に供給するための低圧直流電流供給部(21)と、該低圧直流電流供給部のプラス側端子およびマイナス側端子にカソードおよびアノードがそれぞれ接続された保護ダイオード(22)と、前記低圧直流電流供給部の前記マイナス側端子とアースとの間に接続された低電圧避雷器(23)とを備えてもよい。 The DC current supply means, a low pressure direct current supply unit for supplying said low voltage direct current to the main circuit of the vacuum circuit breaker (21), the positive terminal and the negative terminal of the low voltage direct current supply unit the protection diode having a cathode and anode are respectively connected (22) may be provided connected low voltage surge arrester and (23) between the negative terminal and ground of the low voltage direct current supply unit.
前記低圧直流電流供給部が、前記低圧直流電流の電流値を任意に設定することができるものであってもよい。 It said low pressure direct current supply unit may be one that can be arbitrarily set current value of the low-pressure DC current.

本発明の真空遮断器真空試験器は、以下に示す効果を奏する。 Vacuum circuit breaker vacuum tester of the present invention exhibits the following effects.
(1)試験時間の短縮 特別高圧の真空遮断器でも通常状態における遮断器開放動作で真空度試験を行うことができるため、従来のように専用の治具を使用して主回路接点を所定の寸法に設定する必要がないので、試験時間の短縮が図れる。 (1) it is possible to perform the vacuum test circuit breaker opening operation in the normal state in a vacuum circuit breaker shortened extra high voltage test time, the conventional main circuit contacts predetermined using a dedicated jig, as since there is no need to be set to a dimension, it can be shortened test time.
(2)真空度の低下度合いの確認 従来の真空度試験では、真空インタラプタの所定の開極間距離で耐電圧試験に耐えるか否かで判定していたために「良」か「不良」かの2つの判定しかできず、また、「良」であっても「不良に近い良か否か」の判定や「完全な真空破壊か真空度低下であるか」の判定ができなかったが、本発明による真空遮断器真空試験器では、真空度の低下度合いを判定することができるので、真空インタラプタの状態に応じた手入れ(直ちに真空インタラプタの交換、経過観察など)が可能になる。 (2) In the confirmation conventional vacuum tests decrease the degree of vacuum, "good" because they were determined by whether withstand the withstand voltage test at a predetermined opening distance of the vacuum interrupter or "bad" Kano can only two determination, also, could not be a determination be "good" judgment and "is a perfect vacuum break or vacuum reduction" of "good whether nearly bad", the present the vacuum circuit breaker vacuum tester according the invention, it is possible to determine the deterioration degree of vacuum, care in accordance with the state of the vacuum interrupter (replaced immediately vacuum interrupter, etc. observation) becomes possible.
(3)適用遮断器の拡大 真空遮断器のタンクを加工する必要がないので、既設の真空遮断器にも適用することができる。 (3) it is not necessary to machine the tanks enlarged vacuum circuit breaker applications breaker, it can also be applied to the vacuum interrupter of the existing.
また、真空度試験時に真空遮断器の主回路に供給する低圧直流電流の電流値を任意に設定することができるので、22kVクラスから110kVクラスの真空遮断器まで1つの真空遮断器真空試験器で適用することができる。 Further, it is possible to arbitrarily set the current value of the low-pressure DC current supplied to the main circuit of the vacuum interrupter when the vacuum degree test, a single vacuum circuit breaker vacuum tester from 22kV class to the vacuum circuit breaker of 110kV class it is possible to apply.
さらに、通常のガス機器では高電圧の直流電圧を印加することはできないが、本発明による真空遮断器真空試験器では低圧直流電流を供給するため問題はなく、真空遮断器の開放時の短時間には高電圧が印加されるものの過渡的な電圧であるので、66kVクラスや110kVクラスのガス中に真空インタラプタがある真空遮断器にも適用することができる。 Furthermore, in the conventional gas appliances can not be applied a DC voltage of a high voltage, the present invention is not a problem to supply the low voltage direct current in a vacuum circuit breaker vacuum tester by a short time at the time of opening of the vacuum circuit breaker is because it is transient voltage which the high voltage is applied, can also be applied to the vacuum circuit breaker is a vacuum interrupter in the gas of 66kV class and 110kV class.
(4)精度の向上 開極間電圧は真空遮断器の開放時に最も高くなるためにアーク放電を起こし易くすることができるので、精度の高い真空度試験を行うことができる。 (4) improved opening voltage of accuracy because it can be susceptible to arcing to be highest during the opening of the vacuum circuit breaker, it is possible to perform a high degree of vacuum test accuracy.
(5)コストの低減 メーカーが推奨している治具使用時のメーカー技術員による指導が不要になるので、コストの低減が図れる。 (5) Since guidance by cost reduction manufacturers manufacturer technician at the time of the jig used that is recommended is not required, the cost can be reduced.

本発明の一実施例による真空遮断器真空試験器10の構成を示す図である。 It is a diagram showing a configuration of a vacuum circuit breaker vacuum tester 10 according to an embodiment of the present invention. 本発明の真空遮断器真空試験器における真空インタラプタの真空度の良否判定方法について説明するための図である。 It is a diagram for explaining a quality determination method of the degree of vacuum in the vacuum interrupter in a vacuum circuit breaker vacuum tester of the present invention. 図1に示した制御部42における真空遮断器1の真空インタラプタの真空度の良否判定方法について説明するための図である。 It is a diagram for explaining a quality determination method of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 in the control unit 42 shown in FIG. 図1に示した制御部42における真空遮断器1の真空インタラプタの真空度の他の良否判定方法について説明するための図である。 It is a diagram for explaining another quality determination method of degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 in the control unit 42 shown in FIG.

上記の目的を、低圧直流電流を直流電流供給手段から真空遮断器の主回路に流した状態で真空遮断器を開放させることにより、真空遮断器の主回路接点と直流電流供給手段との間に接続された高圧リアクトルに誘起した高電圧を真空遮断器の主回路接点間に印加して真空遮断器の真空インタラプタの真空度の良否を判定することにより実現した。 The purpose of, by opening the vacuum circuit breaker under a stream of low pressure direct current from the direct current supply means to the main circuit of the vacuum circuit breaker, between the main circuit contact and the direct current supply means of the vacuum circuit breaker It was achieved by determining the quality of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker of a high voltage induced in the connected high-pressure reactor is applied between the main circuit contacts of the vacuum circuit breaker.

以下、本発明の真空遮断器真空試験器の実施例について図面を参照して説明する。 Hereinafter, will be described with reference to the drawings embodiment of a vacuum circuit breaker vacuum tester of the present invention.
本発明の真空遮断器真空試験器は、真空遮断器の主回路接点と高圧リアクトルとを直列に接続するとともに低圧直流電流を真空遮断器の主回路に流した状態で真空遮断器を開放させることにより、高圧リアクトルに誘起した高電圧を真空遮断器の主回路接点間(開極間)に印加して、真空遮断器の主回路に流れる回路電流Iの低下具合(回路電流Iの変化速度)に基づいて真空インタラプタの真空度の良否判定を行うことを特徴とする。 Vacuum circuit breaker vacuum tester of the present invention, thereby releasing the vacuum circuit breaker under a stream of low pressure direct current in the main circuit of the vacuum interrupter with connecting the main circuit contact and the high-pressure reactor vacuum interrupter in series Accordingly, between the main circuit contact of the vacuum circuit breaker of a high voltage induced in the high pressure reactor is applied to (Hirakikyokukan), lowering degree of the circuit current I flowing through the main circuit of the vacuum circuit breaker (the rate of change in the circuit current I) and performing quality determination of the degree of vacuum in the vacuum interrupter based on.

なお、真空遮断器に印加させる高電圧(開極間電圧V)の電圧値は、V=L×ΔI/Δt(Lは高圧リアクトルのリアクトル値)で設定できるので、回路電流Iの電流値によって制御が可能になる。 The voltage value of the high voltage applied to the vacuum circuit breaker (opening voltage V), since V = L × ΔI / Δt (L is the reactor value of the high-pressure reactor) can be set at, by the current value of the circuit current I control becomes possible.
したがって、開極間電圧Vは回路電流Iが大きいほど大きくなるので、回路電流Iの電流値を試験対象の真空遮断器に対応した値とすることにより、幅広い範囲の真空遮断器について真空度試験が可能になる。 Accordingly, since the opening voltage V increases the larger the circuit current I, by a value corresponding to the vacuum circuit breaker of the current test target circuit current I, the degree of vacuum for a wide range of vacuum circuit breaker testing It becomes possible.

真空インタラプタの真空度の良否については、以下に説明するように、回路電流Iの低下具合に基づいて判定することができる。 The quality of the vacuum degree of the vacuum interrupter, as described below, can be determined based on the reduction degree of the circuit current I.

(1)真空インタラプタの真空度が高い場合 真空インタラプタの真空度が高い場合には、図2(a)に示すように、遮断器開放時刻t 0で真空遮断器が開放されると開極間電圧Vは高電圧になるが、回路電流Iは直ちに遮断されて“0”になる。 (1) when there is a high degree of vacuum in the vacuum interrupter when the vacuum degree of the vacuum interrupter is high, as shown in FIG. 2 (a), when the vacuum circuit breaker is opened by the circuit breaker opening time t 0 between opening the voltage V becomes a high voltage, the circuit current I is interrupted immediately becomes "0".
したがって、回路電流Iが真空遮断器の開放後瞬時に“0”になる場合には、「真空インタラプタの真空度は正常である(高く保たれている)」と判定することができる。 Therefore, when the circuit current I becomes "0" after opening instant of the vacuum circuit breaker, it can be determined that "degree of vacuum in the vacuum interrupter is normal (preserved high)."
なお、同図に示す遮断器開放完了時刻t 1における開極間電圧Vの電圧値は、後述する異常電圧抑制用抵抗32の抵抗値によって異なる。 The voltage value of the opening voltage V in the circuit breaker opening completion time t 1 shown in the figure, varies the resistance value of the abnormal voltage suppression resistors 32 to be described later.

(2)真空インタラプタの真空度が低下している場合 真空インタラプタの真空度が低下している場合には、真空遮断器が開放されても主回路接点間(開極間)でアーク抵抗をもって放電するために真空遮断器の開放と同時に絶縁が回復しないので、図2(b)に示すように、開極間電圧Vが低下していき、開極間距離が長くなって絶縁がある程度回復した遮断器絶縁回復時刻t 2で回路電流Iが遮断されて“0”になる。 (2) When the degree of vacuum when the vacuum interrupter degree of vacuum in the vacuum interrupter is reduced is decreased, discharge with a arc resistance even vacuum circuit breaker is opened between the main circuit contact (Hirakikyokukan) since at the same time insulating the opening of the vacuum circuit breaker does not recover to, as shown in FIG. 2 (b), gradually reduces the opening voltage V, insulation and restore some longer distance between opening breaker with an insulating recovery time t 2 circuit current I is cut off to "0".
ここで、遮断器絶縁回復時刻t 2は、真空インタラプタの真空度が低下しているほど遅くなる。 Here, the circuit breaker insulated recovery time t 2 becomes slower degree of vacuum in the vacuum interrupter is reduced.
したがって、回路電流Iが瞬時に“0”にならずかつ遮断器開放完了時刻t 1よりもある程度前に“0”になる場合には、「真空インタラプタの真空度が低下している」と判定することができる。 Therefore, when the circuit current I becomes "0" before some extent than and breaker release completion time t 1 does not become "0" instantaneously, the "degree of vacuum in the vacuum interrupter is reduced 'decision can do. また、遮断器絶縁回復時刻t 2を計測することにより、真空インタラプタの真空度の低下度合いを把握することができる。 Also, by measuring the breaker insulation recovery time t 2, the can grasp the degree of decrease of the degree of vacuum in the vacuum interrupter.
なお、遮断器絶縁回復時刻t 2において回路電流Iが“0”になると、開極間電圧Vは一旦大きくなったのちに低下していく。 Incidentally, when the circuit current I in the circuit breaker insulating recovery time t 2 becomes "0", the opening between the voltage V is gradually decreased to after once increased.

(3)真空インタラプタの真空度が破壊されている場合 真空インタラプタの真空度が破壊されている場合には、真空遮断器の主回路接点間(開極間)でアーク抵抗を持って放電が開始されるので、図2(c)に示すように、遮断器開放時刻t 0における開極間電圧Vの電圧値は真空インタラプタの真空度が高い場合に比べて小さくなり、回路電流Iもアーク抵抗を持って放電が起こったのちに開極間距離が開くに従ってまた開極間電圧Vが低下するに従って電流値が低下していき、遮断器絶縁回復時刻t 3において主回路接点間(開極間)の絶縁が回復すると回路電流Iの電流値が“0”になる。 (3) When the degree of vacuum when the vacuum interrupter degree of vacuum in the vacuum interrupter is destroyed is destroyed, discharge starts with the arc resistance between the main circuit contacts of the vacuum circuit breaker (Hirakikyokukan) since the, as shown in FIG. 2 (c), the voltage value of the opening voltage V in the circuit breaker opening time t 0 becomes smaller as compared to when there is a high degree of vacuum in the vacuum interrupter, the circuit current I is also arc resistance current value gradually decreases and in accordance with the voltage V drops between opening according opens opening distance in after discharges have been induced with a main circuit contact between the circuit breaker insulating recovery time t 3 (Hirakikyokukan the current value of the circuit current I when the insulation is restored in) becomes "0".
ここで、遮断器絶縁回復時刻t 3を真空遮断器の開放完了時刻t 1の直後としているが、真空遮断器の条件(ガス中のインタラプタや気中の場合の湿度など)により異なる。 Here, the circuit breaker insulated recovery time t 3 is set to immediately after the release completion time t 1 of a vacuum circuit breaker varies with the vacuum circuit breaker conditions (such as humidity in the case in interrupter or air in the gas).
したがって、回路電流Iが遮断器開放完了時刻t 1の前後において“0”になる場合には、「真空インタラプタの真空度が破壊されている」と判定することができる。 Therefore, when the circuit current I becomes "0" before and after the circuit breaker release completion time t 1 can be determined as "degree of vacuum in the vacuum interrupter is destroyed."
なお、遮断器絶縁回復時刻t 3において回路電流Iが“0”になると、開極間電圧Vは一旦大きくなったのちに低下していく。 Incidentally, when the circuit current I becomes "0" in the circuit breaker insulating recovery time t 3, the opening between the voltage V is gradually decreased to after once increased.

次に、本発明の一実施例による真空遮断器真空試験器10について、図1を参照して説明する。 Next, the vacuum circuit breaker vacuum tester 10 according to an embodiment of the present invention will be described with reference to FIG.
本実施例による真空遮断器真空試験器10は、図1に示すように、直流電流供給装置20と、リアクトル式の高電圧発生装置30と、制御装置40と、直流変流器50と、2つの保安用接地取付端子60とを具備する。 Vacuum circuit breaker vacuum tester 10 according to this embodiment, as shown in FIG. 1, a direct current supply unit 20, a high voltage generating device 30 of the reactor type, the control unit 40, a DC current transformer 50, 2 One of comprising a ground mounting pin 60 for safety.

ここで、直流電流供給装置20は、低圧直流電流供給部21と、保護ダイオード22と、低電圧避雷器23とを備える。 Here, the direct current supply device 20 includes a low pressure direct current supply unit 21, and the protection diode 22, and a low-voltage surge arrester 23.
低圧直流電流供給部21は、真空遮断器1の真空度試験に必要な低圧直流電流を真空遮断器1の主回路に供給するためのものであり、低圧直流電流の電流値を任意に設定することができるものである。 Low direct current supply unit 21 is for supplying a low voltage direct current necessary for the vacuum absorption test of the vacuum circuit breaker 1 in the main circuit of the vacuum circuit breaker 1, to arbitrarily set the current value of the low pressure direct current it is what it is.
保護ダイオード22は、真空遮断器1が開放された際に後述の高圧リアクトル31から供給される電流を真空遮断器1に流すとともに、真空度試験中に低圧直流電流供給部21が故障(回路開放や電流断)した際に発生する異常電圧(高電圧)を抑制するためのものである。 Protection diode 22, with electric current supplied to the vacuum circuit breaker 1 from the high-pressure reactor 31 described later when the vacuum circuit breaker 1 is opened, low pressure direct current supply unit 21 fails during vacuum test (open circuit and current disconnection) abnormal voltage generated during the (is for suppressing a high voltage). なお、保護ダイオード22のカソードは低圧直流電流供給部21のプラス側端子に接続されており、保護ダイオード22のアノードは低圧直流電流供給部21のマイナス側端子に接続されている。 Incidentally, the cathode of the protection diode 22 is connected to the positive terminal of the low voltage direct current supply unit 21, the anode of the protection diode 22 is connected to the negative terminal of the low voltage direct current supply unit 21.
低電圧避雷器23は、低圧直流電流供給部21のマイナス側端子とアースとの間に接続されており、保護ダイオード22の故障時のバックアップ用のもの(すなわち、保護ダイオード22が故障(回路開放)した際に上記の異常電圧を抑制するためのもの)である。 Low-voltage surge arrester 23 is connected between the negative terminal and ground of the low voltage direct current supply unit 21, one for backup failure time of the protection diode 22 (i.e., the protection diode 22 is broken (open-circuit) it is then used to suppress the abnormal voltage when the).

高電圧発生装置30は、高圧リアクトル31と、異常電圧抑制用抵抗32とを備える。 High-voltage generator 30 includes a high pressure reactor 31, and for abnormal voltage suppression resistor 32.
高圧リアクトル31は、真空遮断器1の主回路接点と低圧直流電流供給部21のマイナス側端子との間に接続されており、低圧直流電流を低圧直流電流供給部21から真空遮断器1の主回路に供給したのちに真空遮断器1を開放することにより高電圧を発生させるためのものである。 High pressure reactor 31 is connected between the negative terminal of the main circuit contacts and the low pressure direct current supply unit 21 of the vacuum circuit breaker 1, the main vacuum circuit breaker 1 low pressure direct current from the low pressure direct current supply unit 21 it is for generating a high voltage by opening the vacuum circuit breaker 1 After supply to the circuit.
異常電圧抑制用抵抗32は、高圧リアクトル31と並列に接続されており、高圧リアクトル31によって発生する異常電圧を抑制するとともに放電抵抗の機能を兼ね備えたものである。 For abnormal voltage suppression resistor 32 is connected in parallel with the high-pressure reactor 31, in which combines the function of the discharge resistance with suppressing the abnormal voltage generated by the high pressure reactor 31.

制御装置40は、電流波形計測部41と、制御部(MPU)42とを備える。 Controller 40 includes a current waveform measurement unit 41, and a control unit (MPU) 42.
電流波形計測部41は、直流変流器50から入力される回路電流Iの波形を計測するためのものであり、計測した回路電流Iの波形を示す電流波形計測信号を制御部42に出力する。 Current waveform measurement unit 41 is for measuring the waveform of the circuit current I is input from the DC current transformer 50 outputs a current waveform measurement signal showing waveforms of the measured circuit current I to the control unit 42 .
制御部42は、真空度試験時に真空遮断器1を開放させるための遮断器操作指令信号Saを遮断器(含む遮断器制御装置)(不図示)に出力し、真空度試験開始時に回路電流Iの電流波形を計測するように指示する制御信号を電流波形計測部41に出力し、低圧直流電流の電流値を設定したり真空度試験開始時に低圧直流電流を真空遮断器1に供給するように指示したりする制御信号を低圧直流電流供給部21に出力するとともに、電流波形計測部41から入力される電流波形計測信号に基づいて真空遮断器1の真空インタラプタの真空度の良否を判定するためのものである。 Control unit 42, (breaker controller including) breaker breaker operation command signal Sa for opening the vacuum circuit breaker 1 when the degree of vacuum test output (not shown), the circuit current I at the beginning vacuum test It outputs a control signal instructing to measure the current waveform in the current waveform measurement unit 41, to supply the low voltage direct current to the vacuum interrupter 1 during vacuum test start to set a current value of the low pressure direct current it outputs a control signal and instruct the low pressure direct current supply unit 21, for determining the quality of degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 on the basis of the current waveform measurement signal input from the current waveform measurement unit 41 belongs to. また、制御部42は、「真空度が低下している」と判定するか「真空度が破壊されている」と判定した場合は、警報出力信号Sbを外部に出力する。 The control unit 42, when it is determined whether the determination "vacuum is reduced," "vacuum is destroyed", and outputs an alarm output signal Sb to the outside.

直流変流器50は、低圧直流電流供給部21のプラス側端子と真空遮断器1との間の試験回路に設けられており、この試験回路に流れる回路電流Iを検出するためのものである。 DC current transformer 50 is provided in the test circuit between the positive terminal and the vacuum circuit breaker 1 of the low pressure direct current supply unit 21 is for detecting the circuit current I flowing in the test circuit .

2つの保安用接地取付端子60は、高電圧発生装置30と真空遮断器1との間の試験回路および直流変流器50と真空遮断器1との間の試験回路にそれぞれ設けられており、保安用接地器具を取り付けるためのものである。 Two protective ground mounting pins 60 are provided on each of the test circuits between the test circuit and the DC current transformer 50 and the vacuum circuit breaker 1 between the high voltage generator 30 and the vacuum circuit breaker 1, it is intended for attaching the security for ground equipment.

次に、制御装置40の制御部42における真空遮断器1の真空インタラプタの真空度の良否判定方法について、図3を参照して説明する。 Next, quality determination method of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 in the control unit 42 of the control unit 40 will be described with reference to FIG.

制御部42は、真空度試験を開始する際には、低圧直流電流を真空遮断器1に供給するように指示する制御信号を低圧直流電流供給部21に出力する。 Control unit 42, when starting the vacuum test outputs a control signal instructing to provide a low pressure direct current to the vacuum interrupter 1 in the low pressure direct current supply unit 21. これにより、低圧直流電流が低圧直流電流供給部21から真空遮断器1の主回路に供給される。 Thus, a low pressure direct current is supplied from the low pressure direct current supply unit 21 to the main circuit of the vacuum circuit breaker 1.
また、制御部42は、直流変流器50から入力される回路電流Iの波形を計測するように指示する制御信号を電流波形計測部41に出力する。 The control unit 42 outputs a control signal instructing to measure the waveform of the circuit current I is input from the DC current transformer 50 to the current waveform measurement unit 41. これにより、電流波形計測部41は、回路電流Iの波形計測を開始し、電流波形計測信号を制御部42に出力する。 Thus, the current waveform measurement unit 41 starts the waveform measuring circuit current I, and outputs a current waveform measurement signal to the control unit 42.

その後、制御部42は、真空遮断器1を開放するように指示する遮断器操作指令信号Saを遮断器(含む遮断器制御装置)に出力する。 Thereafter, the control unit 42 outputs a circuit breaker operation instruction signal Sa to instruct to open the vacuum circuit breaker 1 circuit breaker (breaker controller including). これにより、図3(a)〜(c)に示す遮断器開放時刻t 0において真空遮断器1が開放される。 Thus, the vacuum circuit breaker 1 is opened in the circuit breaker opening time t 0 shown in FIG. 3 (a) ~ (c) .

制御部42は、以下のようにして、真空遮断器1を開放させたのちの回路電流Iの変化速度に基づいて、真空遮断器1の真空インタラプタの真空度の良否を判定する。 Control unit 42, as follows, based on the change rate of the circuit current I After opens the vacuum circuit breaker 1, it determines the quality of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1.
制御部42は、電流波形計測部41から入力される電流波形計測信号に基づいて、遮断器開放時刻t 0後に回路電流Iの電流値が“0”になる遮断器絶縁回復時刻t 2 ,t 3を検出し、検出した遮断器絶縁回復時刻t 2 ,t 3から遮断器開放時刻t 0を引くことにより遮断器絶縁回復時間T(=t 2 −t 0 ,t 3 −t 0 )を計測し、計測した遮断器絶縁回復時間Tが第1の判定基準値A 1未満であるか第1の判定基準値A 1以上第2の判定基準値A 2未満であるか第2の判定基準値A 2以上であるかを調べる。 Control unit 42, based on the current waveform measurement signal input from the current waveform measurement unit 41, the circuit breaker opening time t 0 after the circuit current breaker insulation recovery time t 2 the current value becomes "0" of the I, t 3 detects, measures the breaker insulation recovery time T (= t 2 -t 0, t 3 -t 0) by subtracting the breaker opening time t 0 from the breaker insulating recovery time t 2, t 3 detected and, the measured breaker insulation recovery time T the first criterion value a 1 below a is either the first criterion value a 1 or more second or less than the determination reference value a 2 second criterion value examine whether it is a 2 or more.
ここで、第1の判定基準値A 1は、たとえば遮断器開放時刻t 0から遮断器開放完了時刻t 1までの時間(=t 1 −t 0 )の1%の値(すなわち、A 1 =(t 1 −t 0 )/100)に設定され、また、第2の判定基準値A 2は、たとえば遮断器開放時刻t 0から遮断器開放完了時刻t 1までの時間(=t 1 −t 0 )の90%の値(すなわち、A 2 =90(t 1 −t 0 )/100)に設定される。 Here, the first criterion value A 1, for example 1% of the value of the circuit breaker opening time t 0 breaker opening completion time t 1 to time from (= t 1 -t 0) (i.e., A 1 = (t 1 -t 0) is set to / 100), also the second criterion value a 2, for example the circuit breaker opening time t 0 breaker opening completion time t 1 to time from (= t 1 -t 90% of the value of 0) (i.e., a 2 = 90 (t 1 -t 0) is set to / 100).

その結果、遮断器絶縁回復時間Tが図3(a)に示すように第1の判定基準値A 1未満である(T<A 1 )場合には、制御部42は、「真空度は正常である」と判定する。 As a result, when the circuit breaker insulating recovery time T is the first criterion value A less than 1 as shown in FIG. 3 (a) (T <A 1) , the control unit 42, "the degree of vacuum is normally determines that the is ".
また、遮断器絶縁回復時間Tが同図(b)に示すように第1の判定基準値A 1以上第2の判定基準値A 2未満である(A 1 ≦T<A 2 )場合には、制御部42は、「真空度が低下している」と判定して、その旨を示す警報出力信号Sbを外部に出力する。 Further, when the circuit breaker insulating recovery time T is the first criterion value A 1 or more second less than the determination reference value A 2 as shown in FIG. (B) (A 1 ≦ T <A 2) is , the control unit 42 determines that the "degree of vacuum is reduced", and outputs an alarm output signal Sb indicating that the external.
さらに、遮断器絶縁回復時間Tが同図(c)に示すように第2の判定基準値A 2以上である(A 2 ≦T)場合には、制御部42は、「真空度が破壊されている」と判定して、その旨を示す警報出力信号Sbを外部に出力する。 Further, when the circuit breaker insulating recovery time T is the second criterion value A 2 or more as shown in FIG. (C) (A 2 ≦ T ) , the control unit 42, "the degree of vacuum is broken it is determined that it is ", and outputs an alarm output signal Sb indicating that the external. なお、「真空度が破壊されている」と判定する真空度については、パッシェンカーブの最低値に至る前の一定値とする。 Note that determines the degree of vacuum "vacuum degree is destroyed" is a constant value before reaching the minimum value of Paschen curve.

なお、制御部42は、検出した遮断器絶縁回復時間Tに応じて真空遮断器1の真空インタラプタの真空度の低下度合いを求め、求めた真空度の低下度合いを示す警報出力信号Sbを外部に出力してもよい。 The control unit 42 obtains the degree of decrease of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 in accordance with the circuit breaker insulating recovery time detected T, an alarm output signal Sb indicating the degree of decrease of the degree of vacuum required for the external it may be output.

以上の説明では、制御部42は、電流波形計測部41から入力される電流波形計測信号に基づいて真空遮断器1の真空インタラプタの真空度の良否を判定したが、図2(a)〜(c)に示したように、遮断器開放時刻t 0における開極間電圧Vは、真空遮断器1の真空インタラプタの真空度が低下していくほど正常時開極間電圧V 0 (真空度が正常である場合の遮断器開放時刻t 0における開極間電圧V)よりも小さくなっていくことに着目して、図4(a)〜(c)に示すように開極間電圧変化量に基づいて真空遮断器1の真空インタラプタの真空度の良否を判定してもよい。 In the above description, the control unit 42 has been determined the quality of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 on the basis of the current waveform measurement signal input from the current waveform measurement unit 41, FIG. 2 (a) ~ ( as shown in c), opening voltage V in the circuit breaker opening time t 0, the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 is as normal during opening voltage V 0 (degree of vacuum decreases focusing on that becomes smaller than the voltage V) between the opening in the circuit breaker opening time t 0 when it is normal, the opening between the voltage variation as shown in FIG. 4 (a) ~ (c) it may determine the acceptability of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 based.
この場合には、制御部42は、真空遮断器1内に設けられた電圧計(不図示)から入力される真空遮断器開放時の開極間電圧Vの電圧値の正常時開極間電圧V 0に対する変化量ΔV(=V−V 0 )を求め、求めた変化量ΔVが図4(a)に示すように第1の電圧判定基準値B 1 (たとえば、正常時開極間電圧V 0の10%の電圧値(=0.1×V 0 )に設定される。)未満である場合には、「真空度は正常である」と判定し、求めた変化量ΔVが同図(b)に示すように第1の電圧判定基準値B 1以上で第2の電圧判定基準値B 2 (たとえば、正常時開極間電圧V 0の30%の電圧値(=0.3×V 0 )に設定される。)未満である場合には、「真空度が低下している」と判定し、求めた変化量ΔVが同図(c)に示すように第2の電圧判定基準値 In this case, the control unit 42, the normal time of opening voltage of the voltage value of the opening voltage V at the time of the vacuum circuit breaker opening input from the voltmeter provided in the vacuum circuit breaker 1 (not shown) determine the amount of change ΔV (= V-V 0) with respect to V 0, the first voltage determination reference value as shown on the obtained amount of change [Delta] V in FIG. 4 (a) B 1 (e.g., between normal during opening voltage V 10% of the voltage value of 0 if (= 0.1 × V 0) is.) below is to be set to a judgment of "vacuum degree is normal", calculated amount of change ΔV is drawing ( as shown in b) a first voltage criterion value B 1 or the second voltage judging reference value B 2 (e.g., normal when 30% of the voltage value of the opening voltage V 0 (= 0.3 × V is set to 0).) If it is less than a judgment of "vacuum is reduced", as determined amount of change ΔV is shown in FIG. 2 (c) second voltage determination reference value 2以上である場合には、「真空度が破壊されている」と判定する。 If it is 2 or more, it is determined that "vacuum is destroyed."
なお、制御部42は、求めた変化量ΔVに応じて真空遮断器1の真空インタラプタの真空度の低下度合いを求めてもよい。 The control unit 42 may determine the degree of decrease of the degree of vacuum in the vacuum interrupter of the vacuum circuit breaker 1 in accordance with a change amount ΔV obtained.

また、制御部42は、図3を参照して説明した回路電流変化速度による良否判定方法と図4を参照して説明した開極間電圧変化量による良否判定方法とを組み合わせて、真空遮断器1の真空インタラプタの真空度の良否を判定してもよい。 The control unit 42 combines the quality determination method according to the opening between the voltage variation as described with reference to quality determination method and 4 by the circuit current change rate described with reference to FIG. 3, the vacuum circuit breaker the quality of the degree of vacuum 1 vacuum interrupter may be determined.

1 真空遮断器10 真空遮断器真空試験器20 直流電流供給装置21 低圧直流電流供給部22 保護ダイオード23 低電圧避雷器30 高電圧発生装置31 高圧リアクトル32 異常電圧抑制用抵抗40 制御装置41 電流波形計測部42 制御部50 直流変流器60 保安用接地取付端子V 開極間電圧V 0正常時開極間電圧ΔV 変化量I 回路電流Sa 遮断器操作指令信号Sb 警報出力信号t 0遮断器開放時刻t 1遮断器開放完了時刻t 2 ,t 3遮断器絶縁回復時刻T 遮断器絶縁回復時間A 1 ,A 2第1および第2の判定基準値B 1 ,B 2第1および第2の電圧判定基準値L リアクトル値 1 vacuum circuit breaker 10 vacuum breaker vacuum tester 20 direct current supply device 21 low pressure direct current supply unit 22 protection diode 23 low voltage surge arrester 30 high-voltage generator 31 a high-pressure reactor 32 for abnormal voltage suppression resistor 40 controller 41 current waveform measurement part 42 control unit 50 direct current transformer 60 protective ground mounting terminal V opening voltage ΔV variation between voltage V 0 during normal operation opening I circuit current Sa breaker operation command signal Sb alarm output signal t 0 breaker opening time t 1 breaker opening completion time t 2, t 3 breaker insulation recovery time T breaker insulation recovery time a 1, a 2 the first and second criterion values B 1, B 2 first and second voltage judging reference value L reactor value

Claims (7)

  1. 真空遮断器(1)の真空度試験を行うのに用いられる真空遮断器真空試験器(10)であって、 A vacuum circuit breaker (1) vacuum circuit breaker vacuum tester used to perform the vacuum test (10),
    低圧直流電流を前記真空遮断器の主回路に供給するための直流電流供給手段(20)と、 Direct current supplying means for supplying a low voltage direct current to the main circuit of the vacuum circuit breaker (20),
    前記真空遮断器の主回路接点と前記直流電流供給手段との間に接続された高圧リアクトル(31)を備えた高電圧発生手段(30)と、 A high voltage generating means (30) having a high pressure reactor (31) connected between the main circuit contact and the direct current supply means of the vacuum circuit breaker,
    前記低圧直流電流を前記真空遮断器の前記主回路に流した状態で該真空遮断器を開放させることにより、前記高圧リアクトルに誘起した高電圧を該真空遮断器の前記主回路接点間に印加して該真空遮断器の真空インタラプタの真空度の良否を判定するための真空度良否判定手段(41,42)と、 By opening the vacuum breaker in a state where the low pressure direct current was flowed to the main circuit of the vacuum interrupter, a high voltage induced in the high pressure reactor is applied between the main circuit contacts of the vacuum circuit breaker vacuum quality determination means for determining the quality of degree of vacuum in the vacuum interrupter of the vacuum circuit breaker Te and (41, 42),
    を具備することを特徴とする、真空遮断器真空試験器。 Characterized by comprising a vacuum circuit breaker vacuum tester.
  2. 前記真空度良否判定手段が、前記真空遮断器を開放させたのちの該真空遮断器の前記主回路に流れる回路電流(I)の変化速度に基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定することを特徴とする、請求項1記載の真空遮断器真空試験器。 The vacuum quality determining means, on the basis of the rate of change in the circuit current flowing in the main circuit of the vacuum circuit breaker After opens the vacuum circuit breaker (I), the vacuum of the vacuum interrupter of the vacuum circuit breaker and judging the quality of the degree, the vacuum circuit breaker vacuum tester of claim 1.
  3. 前記真空度良否判定手段が、前記真空遮断器を開放させたときの該真空遮断器の開極間電圧(V)の正常時開極間電圧(V 0 )に対する変化量(ΔV)に基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定することを特徴とする、請求項1記載の真空遮断器真空試験器。 The vacuum quality determining means, based on a change amount ([Delta] V) for normal operation opening voltage of the vacuum circuit breaker opening voltage obtained while opening the vacuum circuit breaker (V) (V 0) , and judging the quality of the vacuum degree of the vacuum interrupter of the vacuum circuit breaker, a vacuum circuit breaker vacuum tester of claim 1.
  4. 前記真空度良否判定手段が、前記真空遮断器を開放させたのちの該真空遮断器の前記主回路に流れる回路電流(I)の変化速度と、該真空遮断器を開放させたときの該真空遮断器の開極間電圧(V)の正常時開極間電圧(V 0 )に対する変化量(ΔV)とに基づいて、該真空遮断器の前記真空インタラプタの真空度の良否を判定することを特徴とする、請求項1記載の真空遮断器真空試験器。 Vacuum when the vacuum quality determining means, that the the rate of change of circuit current flowing in the main circuit of the vacuum circuit breaker After opens the vacuum circuit breaker (I), opens the vacuum breaker based on the amount of change ([Delta] V) for normal operation opening voltage of the circuit breaker opening voltage (V) (V 0), to judge the quality of the vacuum degree of the vacuum interrupter of the vacuum circuit breaker wherein, the vacuum circuit breaker vacuum tester of claim 1.
  5. 前記高電圧発生手段が、前記高圧リアクトルと並列に接続された異常電圧抑制用抵抗(32)をさらに備えることを特徴とする、請求項1乃至4いずれかに記載の真空遮断器真空試験器。 The high voltage generating means, and further comprising the high-pressure reactor and a resistor for connection anomaly voltage suppression in parallel (32), the vacuum circuit breaker vacuum tester according to any of claims 1 to 4.
  6. 前記直流電流供給手段が、 The DC current supply means,
    前記低圧直流電流を前記真空遮断器の前記主回路に供給するための低圧直流電流供給部(21)と、 Low direct current supply unit for supplying said low voltage direct current to the main circuit of the vacuum circuit breaker (21),
    該低圧直流電流供給部のプラス側端子およびマイナス側端子にカソードおよびアノードがそれぞれ接続された保護ダイオード(22)と、 A protection diode (22) cathode and anode connected respectively to the positive terminal and the negative terminal of the low voltage direct current supply unit,
    前記低圧直流電流供給部の前記マイナス側端子とアースとの間に接続された低電圧避雷器(23)と、 Connected low voltage surge arrester between the negative terminal and ground of the low voltage direct current supply unit (23),
    を備えることを特徴とする、請求項1乃至5いずれかに記載の真空遮断器真空試験器。 Characterized in that it comprises a vacuum circuit breaker vacuum tester according to any one of claims 1 to 5.
  7. 前記低圧直流電流供給部が、前記低圧直流電流の電流値を任意に設定することができるものであることを特徴とする、請求項6記載の真空遮断器真空試験器。 It said low pressure direct current supply unit, characterized in that the one in which it is possible to arbitrarily set the current value of the low pressure direct current, vacuum interrupter vacuum tester of claim 6.
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JP2012159424A (en) * 2011-02-01 2012-08-23 Chugoku Electric Power Co Inc:The Device and method for testing vacuum circuit breaker
WO2012157134A1 (en) * 2011-05-13 2012-11-22 三菱電機株式会社 Device for detecting deterioration in degree of vacuum of hermetic opening and closing device
WO2013090408A1 (en) * 2011-12-13 2013-06-20 Finley Lee Ledbetter Flexible magnetic field coil for measuring ionic quantity
CN105241643A (en) * 2015-09-19 2016-01-13 东北电力大学 High-voltage circuit breaker mechanical state monitoring method employing HS transformation and single-type support vector machine
WO2016205420A1 (en) * 2015-06-15 2016-12-22 Finley Lee Ledbetter System and method to predict a usable life of a vacuum interrupter in the field
US9759773B2 (en) 2011-12-13 2017-09-12 Finley Lee Ledbetter System and method to predict a usable life of a vacuum interrupter in the field

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Cited By (16)

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Publication number Priority date Publication date Assignee Title
JP2012159424A (en) * 2011-02-01 2012-08-23 Chugoku Electric Power Co Inc:The Device and method for testing vacuum circuit breaker
WO2012157134A1 (en) * 2011-05-13 2012-11-22 三菱電機株式会社 Device for detecting deterioration in degree of vacuum of hermetic opening and closing device
US9759773B2 (en) 2011-12-13 2017-09-12 Finley Lee Ledbetter System and method to predict a usable life of a vacuum interrupter in the field
US9026375B1 (en) 2011-12-13 2015-05-05 Finley Lee Ledbetter Method to predict a usable life of a vacuum interrupter in the field
US9031795B1 (en) 2011-12-13 2015-05-12 Finley Lee Ledbetter Electromagnetic test device to predict a usable life of a vacuum interrupter in the field
GB2520097A (en) * 2011-12-13 2015-05-13 Finley Lee Ledbetter Flexible magnetic field coil for measuring ionic quantity
US9952178B2 (en) 2011-12-13 2018-04-24 Finley Lee Ledbetter Method to predict a usable life of a vacuum interrupter in the field
US9335378B2 (en) 2011-12-13 2016-05-10 Finley Lee Ledbetter Flexible magnetic field coil for measuring ionic quantity
WO2013090408A1 (en) * 2011-12-13 2013-06-20 Finley Lee Ledbetter Flexible magnetic field coil for measuring ionic quantity
US9797865B2 (en) 2011-12-13 2017-10-24 Finley Lee Ledbetter Electromagnetic test device to predict a usable life of a vacuum interrupter in the field
GB2520097B (en) * 2011-12-13 2016-11-30 Lee Ledbetter Finley Electromagnetic testing device for determining a life expectancy of a vacuum interrupter
US10036727B2 (en) 2011-12-13 2018-07-31 Finley Lee Ledbetter System and method to predict a usable life of a vacuum interrupter in the field
WO2016205420A1 (en) * 2015-06-15 2016-12-22 Finley Lee Ledbetter System and method to predict a usable life of a vacuum interrupter in the field
GB2556520A (en) * 2015-06-15 2018-05-30 Lee Ledbetter Finley System and method to predict a useable life a vacuum interrupter in the field
CN105241643B (en) * 2015-09-19 2017-08-08 东北电力大学 And using the transformation hs Support vector machine monitoring method for HV Circuit Breaker
CN105241643A (en) * 2015-09-19 2016-01-13 东北电力大学 High-voltage circuit breaker mechanical state monitoring method employing HS transformation and single-type support vector machine

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