JPH0313548B2 - - Google Patents
Info
- Publication number
- JPH0313548B2 JPH0313548B2 JP56040078A JP4007881A JPH0313548B2 JP H0313548 B2 JPH0313548 B2 JP H0313548B2 JP 56040078 A JP56040078 A JP 56040078A JP 4007881 A JP4007881 A JP 4007881A JP H0313548 B2 JPH0313548 B2 JP H0313548B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- test
- main body
- insulated switchgear
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 claims description 33
- 238000010998 test method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Gas-Insulated Switchgears (AREA)
Description
【発明の詳細な説明】
本発明はガス絶縁開閉装置の耐電圧試験方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a withstand voltage testing method for gas insulated switchgear.
ガス絶縁開閉装置は現地据付後耐電圧試験をす
る場合がある。ところがこの種装置では、充電部
が気中に露出していないため、試験電圧の印加に
種々の工夫が行なわれている。 Gas-insulated switchgear may be subjected to a withstand voltage test after on-site installation. However, in this type of device, the live part is not exposed to the air, and various techniques have been used to apply the test voltage.
例えば、(1)第１図に示す如くガス絶縁開閉装置
１のハンドホール２にブツシング取付金具３を介
して試験用ブツシング４を取付けて実施する。な
お第１図において５はしや断器、６は接続導体、
７は仕切板、８は絶縁スペーサ、９は断路器、１
０は避雷器、１１はケーブルヘツドでしや断器室
１２とケーブルヘツド室１３はSF6ガス等の絶縁
ガス１４が例えば２Kg／cm2・ｇ程度に充填されて
おり、必要により各室はガス的に連通せしめられ
ている。(2)変圧器側に試験用ブツシングを取付け
て変圧器側から試験電圧を印加する。(3)ケーブル
の送り側から印加する。等の方法が考えられてい
る。 For example, (1) the test is carried out by attaching the test bushing 4 to the hand hole 2 of the gas insulated switchgear 1 via the bushing fitting 3 as shown in FIG. In Fig. 1, 5 is a bridge or disconnector, 6 is a connecting conductor,
7 is a partition plate, 8 is an insulating spacer, 9 is a disconnector, 1
0 is a lightning arrester, 11 is a cable head, and the breaker chamber 12 and cable head chamber 13 are filled with an insulating gas 14 such as SF 6 gas at a concentration of, for example, 2 kg/cm 2 g, and each chamber is filled with gas if necessary. are communicated with each other. (2) Attach the test bushing to the transformer side and apply the test voltage from the transformer side. (3) Apply from the sending side of the cable. Other methods are being considered.
ところが、前記(1)によるときは、試験用ブツシ
ング４を取付けるため装置の一部又は全体のガス
回収をする必要があり、かつ試験用導体６の接続
等の作業が必要であり、装置の信頼性および作業
性の上からも好ましいことではない。 However, in the case of (1) above, in order to attach the test bushing 4, it is necessary to recover gas from part or all of the device, and work such as connecting the test conductor 6 is required, which reduces the reliability of the device. This is not preferable from the viewpoint of performance and workability.
また、前記(2)によるときは、同じことを変圧器
側で実施するもので、ガスのかわりに油処理とな
るのみで(1)と同様の問題がある。 In addition, in case of (2) above, the same thing is carried out on the transformer side, and only oil treatment is performed instead of gas, and there is a problem similar to (1).
さらに、前記(3)によるときは、相手端が気中で
あれば可能なるも、距離が離れている場合は、試
験用変圧器の容量の関係で無理であり、また相手
端がやはりガス絶縁開閉装置または鉄塔上にある
場合は実施困難である。 Furthermore, according to (3) above, it is possible if the other end is in the air, but if it is far away, it is impossible due to the capacity of the test transformer, and the other end is also gas-insulated. This is difficult to implement if it is located on a switchgear or a steel tower.
この様に上述の方法によるときは、試験が大変
であり、装置の信頼性からも問題があつた。 As described above, when using the above-mentioned method, testing was difficult and there were problems in terms of reliability of the device.
発明者は種々の検討の結果、耐電圧試験時、避
雷器を回路から切り離して実施すること、およ
び、避雷器は過大な雷サージが侵入した場合熱的
に破壊することがあるため１つの容器（例えば絶
縁筒または碍子）に収納し、万一破壊しても他の
機器に影響を与えないようにしていることに着目
し、上述の欠点を克服した試験方法を提供せんと
するものである。 As a result of various studies, the inventor decided to conduct the withstand voltage test by separating the lightning arrester from the circuit, and because the lightning arrester may be thermally destroyed if an excessive lightning surge penetrates, the inventor decided to conduct the withstand voltage test by separating the lightning arrester from the circuit, and because the lightning arrester may be thermally destroyed if an excessive lightning surge penetrates, the inventor decided to use a single container (e.g. The purpose of this paper is to provide a test method that overcomes the above-mentioned drawbacks by focusing on the fact that the device is housed in an insulating tube or insulator, so that even if it breaks, it will not affect other devices.
従つて、本発明の目的は、避雷器本体と試験用
ブツシングを小量のガス処理で交換し耐電圧試験
の合理化と装置の信頼性の維持確保を計ることに
ある。 Therefore, an object of the present invention is to replace the surge arrester main body and the test bushing with a small amount of gas treatment, thereby streamlining the withstand voltage test and maintaining the reliability of the device.
以下、第２図、第３図に示す実施例に基づき本
発明を説明する。第２図はガス絶縁開閉装置２１
の避雷器部分を示す簡略断面図で、２２は装置本
体容器、２３は避雷器用の密封絶縁容器で装置本
体容器２２に対してフランジ２４で気密に固定さ
れている。 The present invention will be explained below based on the embodiments shown in FIGS. 2 and 3. Figure 2 shows gas insulated switchgear 21
2 is a simplified cross-sectional view showing the lightning arrester portion of FIG.
２５は避雷器本体でフランジ２６に固定され装
置本体容器２２に対し気密に取付けられている。
また、この充電部側端子２７は例えば摺動接触子
やバネ等より成るカツプリング装置２８を介して
充電ブロツク２９に連結されている。装置本体容
器２２内には第１図と同様必要に応じて仕切板が
設けられしや断器、その他の機器が収納されたう
え、前記充電ブロツク２９には例えばケーブルヘ
ツド３０が接続されている。 Reference numeral 25 denotes a lightning arrester main body, which is fixed to a flange 26 and is airtightly attached to the device main body container 22.
Further, this charging unit side terminal 27 is connected to a charging block 29 via a coupling device 28 comprising, for example, a sliding contact or a spring. In the device body container 22, partition plates are provided as necessary as in FIG. 1, and a disconnector and other equipment are housed, and a cable head 30, for example, is connected to the charging block 29. .
前記絶縁容器２３内と、装置本体容器２２内に
はSF6ガスの如き絶縁ガス３１が例えば２Kg／
cm2・ｇ未満の圧力で充填されていて、両容器内は
互に気密独立しており、第１、第２止弁３２，３
３で連通し得る様に構成されている。 Insulating gas 31 such as SF 6 gas is contained in the insulating container 23 and the device main body container 22 at a rate of, for example, 2 kg/
It is filled with a pressure of less than cm 2 ·g, and the insides of both containers are airtightly independent from each other, and the first and second stop valves 32, 3
It is configured so that it can communicate with 3.
また、両弁３２，３３の接続点はガス制御装置
３４に接続され両容器２２，２３内のガスコント
ロールが可能となつている。 Further, the connection point between both the valves 32 and 33 is connected to a gas control device 34, so that the gas inside both the containers 22 and 23 can be controlled.
３５は必要により、前記フランジ２６に取付け
られた放圧装置で、避雷器本体２５が熱的に破壊
した場合、発生した過大なガス圧力を大気中に放
出し本体容器２２内には全く影響を与えないよう
にするためのものである。 35 is a pressure relief device attached to the flange 26, if necessary, so that when the arrester main body 25 is thermally destroyed, the excessive gas pressure generated is released into the atmosphere so that the inside of the main body container 22 is not affected at all. This is to prevent this from happening.
而して、ガス絶縁開閉装置２１は据付時第２図
の状態にあり、耐電圧試験を行なうには、まず、
止弁３２を開、止弁３３を閉とし絶縁容器２３内
のガスを抜き止弁３２を閉とすることによりフラ
ンジ２６と２４の締結を解いて避雷器本体２５を
抜き去る。 Therefore, the gas insulated switchgear 21 is in the state shown in Fig. 2 when installed, and in order to perform a withstand voltage test, first,
The stop valve 32 is opened and the stop valve 33 is closed to evacuate the gas in the insulating container 23 and the stop valve 32 is closed to unfasten the flanges 26 and 24 and remove the arrester body 25.
続いて、第３図に示す様に、試験用ブツシング
３５を前記絶縁容器２３内に挿入する。このブツ
シング３５の首下部３６は前記避雷器本体２５と
同一長さに構成されており、先端の充電部側端子
３７がカツプリング装置２８と自動連結される。
そこで前記ブツシングのフランジ３８をフランジ
２４に締結した後、止弁３２を開いて絶縁容器２
３内の真空処理をし、ここに絶縁媒体３１を所定
圧力に充填したうえ止弁３２を閉じる。 Subsequently, as shown in FIG. 3, the test bushing 35 is inserted into the insulating container 23. A lower neck portion 36 of the bushing 35 is configured to have the same length as the lightning arrester main body 25, and a live part side terminal 37 at the tip is automatically connected to the coupling device 28.
Therefore, after fastening the flange 38 of the bushing to the flange 24, the stop valve 32 is opened and the insulating container 2 is closed.
3 is vacuum-treated, the insulating medium 31 is filled therein to a predetermined pressure, and the stop valve 32 is closed.
ここで、試験用変圧器３９より前記ブツシング
３５の気中端子４０に試験電圧を印加する。この
電圧は試験用ブツシング３５から充電ブロツク２
９を介してガス絶縁開閉装置２１の充電部に印加
され、耐電圧試験が行なわれる。 Here, a test voltage is applied from the test transformer 39 to the air terminal 40 of the bushing 35. This voltage is applied from the test bushing 35 to the charging block 2.
9 to the live parts of the gas insulated switchgear 21, and a withstand voltage test is performed.
試験が終了すれば、止弁３２を開とし絶縁容器
２３内のガスを回収したうえ試験用ブツシング３
５を取外し、第２図の如く避雷器本体２５を絶縁
容器２３内に収納装填する。而るうえで、止弁３
２を開とし、絶縁媒体３１を絶縁容器２３内に充
填し一連の作業を終了する。 When the test is completed, the stop valve 32 is opened, the gas in the insulating container 23 is recovered, and the test bushing 3 is removed.
5 is removed, and the lightning arrester main body 25 is stored and loaded into the insulating container 23 as shown in FIG. Therefore, stop valve 3
2 is opened, the insulating medium 31 is filled into the insulating container 23, and the series of operations is completed.
以上詳述した如く、本発明によるときは、ガス
絶縁開閉装置における避雷器をガス絶縁開閉装置
本体の気密を破ることなく試験用ブツシングと取
り替えて耐電圧試験をする様にしたので、ガス絶
縁開閉装置の耐電圧試験時、密封絶縁容器内のガ
ス処理のみでなく、装置本体側または変圧器側を
全く開封することなく試験ができ、試験のために
現地で装置本体容器内を分解する必要がなくな
り、試験準備作業時間の短縮と装置の信頼性の維
持確保ができる。また、避雷器本体の点検、交
換、移設等の場合、ガス絶縁開閉装置のガス処
理、分解が不要となり極めて短時間でこれが可能
となる。さらに、ケーブル引込みを行なつている
場合は、ケーブルの直流耐電圧試験時、この電圧
に避雷器本体が熱的に耐えられないので、避雷器
本体を分離する必要があるが、これに対しても容
易に対処し得るという効果を奏する。なお、実施
例の如く、放圧装置を用いるときは、避雷器本体
が万一過大なサージ侵入で破壊した場合でも大気
中に放圧するのでガス絶縁開閉装置本体内の他の
機器に影響を与えることはない。 As described in detail above, according to the present invention, the lightning arrester in the gas insulated switchgear is replaced with a test bushing without breaking the airtightness of the gas insulated switchgear body, and a withstand voltage test is performed. During withstand voltage tests, the test can be performed not only by gas treatment inside the sealed insulating container, but also without opening the equipment or transformer side at all, eliminating the need to disassemble the inside of the equipment container on-site for testing. , it is possible to shorten the test preparation time and maintain the reliability of the equipment. Furthermore, when inspecting, replacing, relocating, etc. the main body of the lightning arrester, gas treatment and disassembly of the gas insulated switchgear are not required, making it possible to do so in an extremely short time. Furthermore, when cables are being drawn in, the arrester body cannot withstand this voltage thermally during the DC withstand voltage test of the cable, so it is necessary to separate the arrester body, but this can be done easily. This has the effect of being able to deal with the situation. Furthermore, when using a pressure relief device as in the example, even if the arrester body were to break due to excessive surge penetration, the pressure would be released to the atmosphere, so other equipment within the gas insulated switchgear body would not be affected. There isn't.
第１図は従来の試験方法を説明するための簡略
側断面図、第２図、第３図は本発明を説明するた
めのもので、第２図はガス絶縁開閉装置における
密封絶縁筒に避雷器本体を、第３図は試験用ブツ
シングを、それぞれ収納した場合の要部側断面図
である。
２１……ガス絶縁開閉装置、２２……装置本体
容器、２３……密封絶縁容器、２５……避雷器本
体、３１……絶縁ガス、３５……試験用ブツシン
グ。
Figure 1 is a simplified side sectional view for explaining the conventional test method, Figures 2 and 3 are for explaining the present invention, and Figure 2 shows a lightning arrester installed in a sealed insulating tube in gas-insulated switchgear. FIG. 3 is a sectional side view of the main part of the main body and FIG. 3 is a side sectional view of the main part when the test bushing is housed. 21... Gas insulated switchgear, 22... Device main body container, 23... Sealed insulating container, 25... Lightning arrester main body, 31... Insulating gas, 35... Test bushing.
Claims (1)
絶縁開閉装置本体容器に対し独立した密封絶縁容
器に収納し、前記避雷器本体を前記絶縁容器外に
脱出させてここに試験用プツシングを収納し、ガ
ス絶縁開閉装置本体容器の気密を破ることなく耐
電圧試験を実施する様にしたガス絶縁開閉装置の
耐電圧試験方法。1. The main body of the lightning arrester in the gas-insulated switchgear is housed in a sealed insulating container that is independent of the main body container of the gas-insulated switchgear. A withstand voltage test method for gas insulated switchgear that performs a withstand voltage test without breaking the airtightness of the device main body container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56040078A JPS57153273A (en) | 1981-03-18 | 1981-03-18 | Test method for dielectric strength of gas insulation switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56040078A JPS57153273A (en) | 1981-03-18 | 1981-03-18 | Test method for dielectric strength of gas insulation switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57153273A JPS57153273A (en) | 1982-09-21 |
| JPH0313548B2 true JPH0313548B2 (en) | 1991-02-22 |
Family
ID=12570879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56040078A Granted JPS57153273A (en) | 1981-03-18 | 1981-03-18 | Test method for dielectric strength of gas insulation switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57153273A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822017U (en) * | 1981-07-24 | 1983-02-10 | 三菱電機株式会社 | gas insulated switchgear |
| CN103257307B (en) * | 2013-04-02 | 2015-06-24 | 广东省顺德开关厂有限公司 | Gas insulation testing device |
-
1981
- 1981-03-18 JP JP56040078A patent/JPS57153273A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57153273A (en) | 1982-09-21 |
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