JPH01285879A - High frequency high voltage generating circuit - Google Patents
High frequency high voltage generating circuitInfo
- Publication number
- JPH01285879A JPH01285879A JP63114741A JP11474188A JPH01285879A JP H01285879 A JPH01285879 A JP H01285879A JP 63114741 A JP63114741 A JP 63114741A JP 11474188 A JP11474188 A JP 11474188A JP H01285879 A JPH01285879 A JP H01285879A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- condenser
- circuit
- impulse voltage
- voltage generator
- 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
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業−１〕の利用分野）
本発明はガス絶縁開閉装置ならびにこれに関連する試験
装置を試験するための高周波高電圧発生回路に係り、と
くに断路器の開閉操作に伴っで発生するサージ性の高周
波高電圧発生回路に関する。Detailed Description of the Invention [Objective of the Invention] (Field of Application in Industry-1) The present invention relates to a high frequency high voltage generation circuit for testing gas insulated switchgear and test equipment related thereto, and particularly relates to a high frequency high voltage generation circuit for testing gas insulated switchgear and test equipment related thereto. This invention relates to a high-frequency, high-voltage generating circuit that generates surges when opening and closing a device.
（従来の技術）
最近、 Ｂ Ｉ Ｔ、低減や急峻波領域におけるＳＦＧ
ガスの絶縁特性、あるいは金属異物存在時におけるＳＦ
Ｇガスの絶縁破壊などに関してガス絶縁開閉装置の断路
器開閉時に生ずるサージ性の過電圧いわゆる断路器サー
ジが大きな話題となっている。これは断路器サージの大
きさが大きいこと、立上がり時間が短いこと、サージに
含まれる周波数成分が高いために周辺機器は勿論のこと
ガス絶縁開閉装置本体に対しても断路器サージをベース
に絶縁設計を考える必要が生じているためである。(Prior art) Recently, SFG in BIT, reduction and steep wave areas has been developed.
SF in the presence of gas insulation properties or metallic foreign matter
With regard to dielectric breakdown of G gas, surge-like overvoltage, so-called disconnector surge, that occurs when opening and closing a disconnector in a gas-insulated switchgear has become a hot topic. This is because the magnitude of the disconnector surge is large, the rise time is short, and the frequency component included in the surge is high, so it is possible to insulate not only peripheral equipment but also the main body of the gas-insulated switchgear based on the disconnector surge. This is because it is necessary to consider the design.
断路器サージにおいては断路器の極間がアークによって
つながった瞬間に回路の共振により運転電圧の２〜４倍
程度の過電圧が発生する。従来、機器の断路器サージに
よる絶縁耐圧を確認したい場合やＳＦ、ガスなどの放電
特性を調べる場合には短絡発電機を運転しなから断路器
を操作し断路器サージを発生させていた。In a disconnector surge, an overvoltage of about 2 to 4 times the operating voltage is generated due to resonance of the circuit at the moment when the poles of the disconnector are connected by an arc. Conventionally, when it was desired to check the dielectric strength of a device due to a disconnector surge, or to investigate the discharge characteristics of SF, gas, etc., a disconnector was operated before a short-circuit generator was operated to generate a disconnector surge.
（発明が解決しようとする課題）
しかしながら、この試験においては、
■ 短絡発電機を運転し・なければならないため試験自
体が大掛かりにな１】、しかも試験費用が高し）。(Problems to be Solved by the Invention) However, in this test, the test itself is large-scale because a short-circuit generator must be operated [1], and the test cost is high).
■ 発生するサージの大きさ（サージ倍数）は試験回路
が決まると自動的に決まってしまい、放電特性に影響を
与える電圧に関するパラメータ操作がやりにくい。■ The size of the generated surge (surge multiple) is automatically determined once the test circuit is determined, making it difficult to manipulate voltage-related parameters that affect discharge characteristics.
といった欠点髪有し、でいた。She had such shortcomings and hair.
本発明はかかる欠点をなくすためになされたもので、短
絡発電機を運転することなく、かつ発生電圧のコントロ
ールが容易なサージ性高周波高電圧発生回路を提供しよ
うとするものであり、試験費用の低減、試験内容の高度
化を図るとともに、本回路を確実に動作させるための、
装置の工夫に関するものである。The present invention has been made to eliminate such drawbacks, and aims to provide a surge-prone high-frequency high-voltage generating circuit that does not require the operation of a short-circuit generator and that allows easy control of the generated voltage, thereby reducing test costs. In order to reduce the risk of damage and improve the sophistication of the test content, as well as to ensure the operation of this circuit,
This is related to device innovation.
（課題を解決するための手段）
前記目的を達成するために本発明においては、インパル
ス電圧を発生するインパルス電圧発生器にΩ以上の抵抗
を有する充電抵抗及び放電ギヤツブの直列回路で接続し
、Ｍｉｆ記充電抵抗と放電ギャップ間に一端が接地さ汎
前記供試体の浮遊容量の１０倍以上の容量をもつ」〉デ
ンサの他端に接続［。(Means for Solving the Problems) In order to achieve the above object, in the present invention, an impulse voltage generator that generates an impulse voltage is connected to a series circuit of a charging resistor and a discharging gear having a resistance of Ω or more. One end is grounded between the charging resistor and the discharging gap, and the other end is connected to the capacitor, which has a capacitance of 10 times or more than the stray capacitance of the specimen.
ている。ing.
（作 用）
本発明は、インパルス電圧発生器製用いて、−駄コンデ
ンサーを充電し、この充電電圧が所定の電圧に達した後
、放電ギャップを用いてこれを放電させるとともに、主
回路の電気的共振現象を利用することにより高周波高電
圧をガス絶縁開閉装置に発生させるものである。(Function) The present invention uses an impulse voltage generator to charge a negative capacitor, and after the charging voltage reaches a predetermined voltage, it is discharged using a discharge gap, and the main circuit is This system generates high frequency and high voltage in gas-insulated switchgear by utilizing the physical resonance phenomenon.
（実施例） 第１図は本発明の一実施例を示す図面である。(Example) FIG. 1 is a drawing showing an embodiment of the present invention.
第１図において１は供試体であるガス絶縁開閉装置を示
し、これにインパルス電圧発生器２が接続されている。In FIG. 1, reference numeral 1 indicates a gas insulated switchgear as a specimen, to which an impulse voltage generator 2 is connected.
ガス絶縁開閉装置１とこれに接続されるインパルス電圧
発生器２との間には、前記ガス絶縁開閉装置の浮遊容量
の１０倍以を−の値を持ち、一端が接地されるコンデン
サ３の他端が接続され、インパルス電圧発生器２とコン
デンサ３との間には５ｋΩ以上の値を持つ充電抵抗４が
接続されている。さらにコンデンサ３とガス絶縁開閉装
置１との間には放電ギャップ５が設けられており、これ
らの機器はいずれも高電圧用のリード線にて接続されて
いる。放電ギャップ５はギャップの長さあるいは封入ガ
スの圧力が低圧側より調整できるように駆動装置が取付
けられており、放電開始電圧を低圧側よりコントロール
できるよう工夫がなされている。Between the gas insulated switchgear 1 and the impulse voltage generator 2 connected thereto, there is provided a capacitor 3, which has a negative value of 10 times or more the stray capacitance of the gas insulated switchgear, and whose one end is grounded. A charging resistor 4 having a value of 5 kΩ or more is connected between the impulse voltage generator 2 and the capacitor 3. Furthermore, a discharge gap 5 is provided between the capacitor 3 and the gas insulated switchgear 1, and these devices are all connected by high voltage lead wires. A driving device is attached to the discharge gap 5 so that the length of the gap or the pressure of the filled gas can be adjusted from the low pressure side, and the discharge starting voltage can be controlled from the low pressure side.
また、充電抵抗４はコンデンサ３ならびにガス絶縁開閉
装置Ｉ￥１−の浮遊容量および回路のインダクタンス６
ａ、 ６ｂで決まる主回路のサージインピーダンスに比
べて十分に大きな値１例えば５ｋΩ以上になっている。In addition, the charging resistor 4 is the stray capacitance of the capacitor 3 and the gas insulated switchgear I\1-, and the inductance 6 of the circuit.
The value is 1, for example, 5 kΩ or more, which is sufficiently large compared to the surge impedance of the main circuit determined by a and 6b.
なお、インダクタンス６ａ、６ｂは高電圧リード線のも
つ残留インダクタンスをその−・部として利用しても何
等差支えがない。Note that there is no problem in using the residual inductance of the high-voltage lead wire as the negative part of the inductances 6a and 6b.
本実施例によれば先ずインパルス電圧発生器２にて発生
した高電圧は充電抵抗４を介してコンデンサ３を充電す
る。この充電電圧が放電ギャップ５の放電電圧を越える
とここで放電が起こりガス絶縁開閉装置１に電圧が印加
される。この時に発生する電圧は概略ガス絶縁開閉装置
１の浮遊容量、コンデンサ３の容量ならびにインダクタ
ンス６ ａ ＋６ｂの大きさで決まる周波数の高電圧を
発生する。According to this embodiment, first, the high voltage generated by the impulse voltage generator 2 charges the capacitor 3 via the charging resistor 4. When this charging voltage exceeds the discharge voltage of the discharge gap 5, discharge occurs here and a voltage is applied to the gas insulated switchgear 1. The voltage generated at this time is a high voltage with a frequency approximately determined by the stray capacitance of the gas insulated switchgear 1, the capacitance of the capacitor 3, and the magnitude of the inductance 6a + 6b.
この−例を第２図に示す。この場合の周波数は数百ｋＨ
ｚから数十ＭＨｚのオーダになるが、回路定数例えばイ
ンダクタンス６ａ、６ｂを可変することにより制御する
ことができる。図より矩形波パルスの立上がり部分に高
周波成分が重畳していることがわかる。An example of this is shown in FIG. The frequency in this case is several hundred kilohertz
z on the order of several tens of MHz, but it can be controlled by varying circuit constants such as the inductances 6a and 6b. It can be seen from the figure that high frequency components are superimposed on the rising edge of the rectangular wave pulse.
なお、充電抵抗４は主回路の共振現象にインパルス電圧
発生器側の寄生振動の影響が／ｈさくなる様に主回路の
サージインピーダンスより十分大きな値が選ばれている
。また、コンデンサｚ３の値はガス絶縁開閉装置１の浮
遊容量に比べ１０倍以」−とすることによりガス絶縁開
閉装置１に試験に必要な過電圧を発生させることができ
る。The value of the charging resistor 4 is selected to be sufficiently larger than the surge impedance of the main circuit so that the influence of parasitic vibration on the impulse voltage generator side on the resonance phenomenon of the main circuit is reduced. Further, by setting the value of the capacitor z3 to be 10 times or more higher than the stray capacitance of the gas insulated switchgear 1, it is possible to generate an overvoltage necessary for the test in the gas insulated switchgear 1.
第２図より明らかな様に、インパルス電圧発４ト器を用
いて高周波高電（４，Ｈのサージ波形を発生させること
ができる、し、かもインパルス電圧発生器は取扱いが容
易であるので試験費用がはるかに少なくて済むという特
徴がある。１
きらに、印加する電圧はインパルス電圧発生器２の充電
電圧ならびに放電ギャップ５の放電電圧を調整すること
によ番）制御可能であり、放電に影響を与える電圧のパ
ラ５メータ操作がやり易いという特徴がある。As is clear from Figure 2, it is possible to generate a high-frequency, high-voltage (4,H) surge waveform using an impulse voltage generator, and since the impulse voltage generator is easy to handle, it can be tested. 1) The applied voltage can be controlled by adjusting the charging voltage of the impulse voltage generator 2 as well as the discharging voltage of the discharge gap 5. It has the characteristic that it is easy to manipulate the parameters of the voltage that affects it.
第３図は本発明の他の実施例を示すものである４、本実
施例においては、前述の高周波高電圧発生回路に変圧器
１２を設け、これに直列に接続された保［！ｖ低抗値１
０ならびにコンデンサ１１を介してガス絶縁開閉装置１
に接続されでいる。本構成によればＥめ交流電圧をガス
絶縁開閉装置ＩＬこ印加した状態でインパルス電圧発生
器２を１〜リガーすることにより高周波高電圧を発生さ
せることができ、短絡発電機に用いた場合と同等の波形
が得られている。この−・例を第５図に示す。この場合
トリガー位相をコントロールすることにより任意の電圧
位相に高周波高電圧を重畳することが可能である。FIG. 3 shows another embodiment of the present invention.4 In this embodiment, a transformer 12 is provided in the above-mentioned high frequency high voltage generating circuit, and a transformer 12 is connected in series with the transformer 12. v low resistance value 1
0 and gas insulated switchgear 1 via capacitor 11
It is connected to. According to this configuration, a high frequency high voltage can be generated by rigging the impulse voltage generator 2 while applying an AC voltage to the gas insulated switchgear IL, and when used in a short circuit generator. Equivalent waveforms are obtained. An example of this is shown in FIG. In this case, by controlling the trigger phase, it is possible to superimpose a high frequency high voltage on an arbitrary voltage phase.
例えば第５図に示す様に交流電圧が負極性の時に、正極
性パルスを印加することができる。しかしながら、例え
ば交流電圧が正極性の時に正極性のパルスを印加する時
には放電ギャップ５の放電特性が悪くなる。これは放電
ギャップ５ｋ印加される電圧の差が小さくなるためであ
り印加するパルス電圧が低いほどこの傾向が強くなり言
わゆる不整放電が生じ易い。これを改善するため例えば
第４図に示す様に、放電ギャップ５のインパルス電圧発
生器側に接続される電極９ｂに直径１〜５ｗｎの孔をあ
け、このなかに絶縁された針電極８を通すとともにこの
計重ｊ４ｉ８を高抵抗７を介して接地する方法が考えら
れる。これによれはインパルス電圧が印加された瞬間に
針電極８と電極９ｂとの間でｆ備放電が生じ、続いて主
ギャップの電極！ｌａ、 ９ｂｌｔｌｌの放電を誘発す
ることになり放電特性が改善される。この場合にも、主
ギャップの放電電圧は低圧側より制御できる様にしてお
くことは勿論である。For example, as shown in FIG. 5, a positive pulse can be applied when the AC voltage is negative. However, for example, when a positive pulse is applied when the AC voltage is positive, the discharge characteristics of the discharge gap 5 deteriorate. This is because the difference in the voltage applied to the discharge gap 5k becomes smaller, and the lower the pulse voltage applied, the stronger this tendency becomes, and the more likely it is that so-called irregular discharge will occur. To improve this, for example, as shown in FIG. 4, a hole with a diameter of 1 to 5 wn is made in the electrode 9b connected to the impulse voltage generator side of the discharge gap 5, and the insulated needle electrode 8 is passed through the hole. In addition, a method of grounding this weight j4i8 via a high resistance 7 can be considered. This causes a discharge to occur between the needle electrode 8 and the electrode 9b at the moment the impulse voltage is applied, and then to the main gap electrode! 1a, 9bltll discharge is induced, and the discharge characteristics are improved. In this case as well, it goes without saying that the discharge voltage of the main gap can be controlled from the low voltage side.
この様にし、で得られた波形の例を第６図に示す。An example of the waveform obtained in this manner is shown in FIG.
以にに述べた様に、本発明によれば、短絡発電機を用い
ることなく取扱いの容易なインパルス電圧発生器を用い
てガス絶縁開閉装置の断路器開閉時に発生するサージ電
圧を発生させることができる。As described above, according to the present invention, it is possible to generate the surge voltage that occurs when opening and closing a disconnector of a gas-insulated switchgear using an easy-to-handle impulse voltage generator without using a short-circuit generator. can.
第１図は本発明の一実施例を示す高周波高電圧発生回路
の概略構成図、第２図は第１図に示す回路により得らオ
する電圧波形図、第３図は本発明の他の実施例を示す高
周波高電圧発生回路の概略構成図、第４図は第：（図に
示す放電ギャップの詳細図、第５図は第３図に示す回路
により得られる電圧波形図、第６図は第４図に示す放電
ギャップを用いた場合の電圧波形図である。
■ ガス絶縁開閉装置、 ２・ インパルス電圧発生
器、３・・コンデンサ、 ４・・・充電抵抗、５
放電ギャップ、 ６ａ、 ６ｂ・インダクタンス
、７ 高抵抗、 ８・・針電極、−８＝
９ａ、 ９ｂ・電極、 １０−・保護抵抗、１
トコンデンサ、 １２・・・変圧器。
代理人 弁理士 則 近 憲 佑
同 第子丸 健
第１図
時間
第３図FIG. 1 is a schematic configuration diagram of a high frequency high voltage generation circuit showing one embodiment of the present invention, FIG. 2 is a voltage waveform diagram obtained by the circuit shown in FIG. 1, and FIG. 3 is a diagram of another embodiment of the present invention. A schematic configuration diagram of a high-frequency high-voltage generation circuit showing an embodiment, FIG. 4 is a detailed diagram of the discharge gap shown in the figure, FIG. 5 is a voltage waveform diagram obtained by the circuit shown in FIG. 3, and FIG. is a voltage waveform diagram when the discharge gap shown in Fig. 4 is used. ■ Gas-insulated switchgear, 2. Impulse voltage generator, 3. Capacitor, 4. Charging resistor, 5.
Discharge gap, 6a, 6b, inductance, 7, high resistance, 8, needle electrode, -8 = 9a, 9b, electrode, 10-, protective resistance, 1
12...Transformer. Agent Patent Attorney Nori Ken Yudo Daishimaru Ken Figure 1 Time Figure 3
Claims (2)
と供試体間を前記インパルス電圧発生器側より５ｋΩ以
上の抵抗を有する充電抵抗及び放電ギャップの直列回路
で接続し、前記充電抵抗と放電ギャップ間に一端が接地
され前記供試体の浮遊容量の１０倍以上の容量をもつコ
ンデンサの他端を接続してなる高周波高電圧発生回路。(1) An impulse voltage generator that generates an impulse voltage and the specimen are connected from the impulse voltage generator side with a series circuit of a charging resistor having a resistance of 5 kΩ or more and a discharging gap, and between the charging resistor and the discharging gap. A high frequency high voltage generation circuit comprising one end grounded and the other end connected to a capacitor having a capacitance 10 times or more the stray capacitance of the specimen.
なる直列回路を接続してなる請求項１記載の高周波高電
圧発生回路。(2) The high-frequency high-voltage generating circuit according to claim 1, wherein a series circuit comprising an AC power source, a protective resistor, and a capacitor is connected to the specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63114741A JPH01285879A (en) | 1988-05-13 | 1988-05-13 | High frequency high voltage generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63114741A JPH01285879A (en) | 1988-05-13 | 1988-05-13 | High frequency high voltage generating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01285879A true JPH01285879A (en) | 1989-11-16 |
Family
ID=14645492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63114741A Pending JPH01285879A (en) | 1988-05-13 | 1988-05-13 | High frequency high voltage generating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01285879A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881813A (en) * | 2010-06-17 | 2010-11-10 | 国网电力科学研究院 | Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit |
| CN103149545A (en) * | 2013-01-29 | 2013-06-12 | 华北电力大学 | Testing method, testing device, testing equipment and testing system of very fast transient overvoltage (VFTO) sensor |
| CN106124979A (en) * | 2016-08-05 | 2016-11-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 500kV AC filter and breaker fracture voltage measures system and method |
-
1988
- 1988-05-13 JP JP63114741A patent/JPH01285879A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881813A (en) * | 2010-06-17 | 2010-11-10 | 国网电力科学研究院 | Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit |
| WO2011157046A1 (en) * | 2010-06-17 | 2011-12-22 | 国网电力科学研究院 | Method for simulating very fast transient overvoltage generation in gas insulated switchgear (gis) transformer substation and test loop thereof |
| CN103149545A (en) * | 2013-01-29 | 2013-06-12 | 华北电力大学 | Testing method, testing device, testing equipment and testing system of very fast transient overvoltage (VFTO) sensor |
| CN103149545B (en) * | 2013-01-29 | 2016-05-11 | 华北电力大学 | The method of testing of VFTO sensor, device, equipment and system |
| CN106124979A (en) * | 2016-08-05 | 2016-11-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 500kV AC filter and breaker fracture voltage measures system and method |
| CN106124979B (en) * | 2016-08-05 | 2018-11-23 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 500kV AC filter and breaker fracture voltage measuring system and method |
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