JPH0531802B2 - - Google Patents
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- Publication number
- JPH0531802B2 JPH0531802B2 JP61245485A JP24548586A JPH0531802B2 JP H0531802 B2 JPH0531802 B2 JP H0531802B2 JP 61245485 A JP61245485 A JP 61245485A JP 24548586 A JP24548586 A JP 24548586A JP H0531802 B2 JPH0531802 B2 JP H0531802B2
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- converter station
- base
- insulating frame
- insulator
- 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 - Fee Related
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- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、主に極性反転等がある変換所用避雷
器に係り、特に、酸化亜鉛素子を使用したサイリ
スタバルブ保護用避雷器等の様に、絶縁架台等の
上部に配設された変換所用避雷器に関するもので
ある。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention mainly relates to lightning arresters for converter stations that have polarity reversal, etc., and in particular, lightning arresters for protecting thyristor valves using zinc oxide elements. This relates to a lightning arrester for a converter station, which is installed on the top of an insulating frame or the like.
（従来の技術）
従来から交直変換所に用いられる避雷器として
は、例えば、交直変換器を構成するサイリスタバ
ルブの上部アーム側を保護するためのバルブ保護
用Ａ−Ｋ間避雷器等の様に、絶縁架台上に配設さ
れた避雷器が知られている。(Prior art) As a lightning arrester conventionally used in an AC/DC converter station, for example, a lightning arrester between A and K for protecting a valve to protect the upper arm side of a thyristor valve constituting an AC/DC converter, etc. A lightning arrester arranged on a frame is known.
第４図に従来から用いられている変換所用避雷
器の構成を示した。即ち、第４図Ａに示した様
に、架構２等の上に、サイリスタバルブの下部ア
ーム側に相当する分の所要高さＨを有する絶縁架
台１が配設されている。一方、上部に線路端子３
ａ、下部に線路端子３ｂを有する変換所用避雷器
４がベース５を介して前記絶縁架台１上に配設さ
れている。 Figure 4 shows the configuration of a conventional lightning arrester for converter stations. That is, as shown in FIG. 4A, an insulating frame 1 having a required height H corresponding to the lower arm side of the thyristor valve is disposed on the frame 2 and the like. On the other hand, the line terminal 3 on the top
A, a lightning arrester 4 for a converter station having a line terminal 3b at the bottom thereof is arranged on the insulating frame 1 via a base 5.
また、第４図Ｂに示した様に、変換所用避雷器
４の線路端子３ｂの近傍に、放電カウンター、付
磁コイル、磁鋼片等の避雷器の付属機器６が配設
されている。 Further, as shown in FIG. 4B, in the vicinity of the line terminal 3b of the converter station lightning arrester 4, accessories 6 of the lightning arrester, such as a discharge counter, a magnetizing coil, and a magnetic steel piece, are arranged.
さらに、第４図に示した様な絶縁架台１は、一
本の碍子から構成され、その上部に配設される変
換所用避雷器４を支持するため、変換所用避雷器
４より笠径の大きい中空碍子から構成されてい
る。 Furthermore, the insulating stand 1 as shown in FIG. 4 is composed of a single insulator, and in order to support the converter station lightning arrester 4 disposed above it, a hollow insulator with a larger diameter than the converter station lightning arrester 4 is used. It consists of
しかしながら、この様な構成を有する従来の変
換所用避雷器においては、以下に述べる様な問題
点があつた。 However, the conventional lightning arrester for converter stations having such a configuration has the following problems.
即ち、極性反転によつて、変換所用避雷器４の
下部にある線路端子３ｂ側が高圧部となつた場
合、第４図Ｂに示した様に、線路端子３ｂの近傍
には、各種の変換所用避雷器の付属機器６が配設
されているので、この周辺において、電位分布の
乱れを生じ、コロナが発生しやすくなる。これ
は、付属機器及び端子類がシールドリングの周方
向に向かつて突出していると、その部分に電界が
集中するためである。そして、コロナが発生する
と、変換所用避雷器４の電位分布にも乱れを生
じ、サージカウンターの誤動作、磁鋼片による電
流計測値の誤差増大、付属機器に使用している絶
縁物の劣化、あるいは、サイリスタバルブの制御
系にノイズとなつて干渉し誤動作の原因となるた
め、変換所用避雷器の信頼性が著しく低下してい
た。 That is, when the line terminal 3b side at the bottom of the converter station lightning arrester 4 becomes a high voltage part due to polarity reversal, as shown in FIG. 4B, various converter station lightning arresters are installed near the line terminal 3b. Since the attached equipment 6 is disposed, the potential distribution is disturbed in this vicinity, and corona is likely to occur. This is because if the attached equipment and terminals protrude toward the circumferential direction of the shield ring, the electric field will concentrate in that part. When corona occurs, the potential distribution of the converter station surge arrester 4 is also disturbed, causing malfunction of the surge counter, increased error in current measurement values due to magnetic steel pieces, deterioration of the insulation used in attached equipment, or The reliability of lightning arresters for converter stations has been significantly reduced because noise interferes with the thyristor valve control system and causes malfunctions.
また、変換所用避雷器４を支持する絶縁架台１
が中空碍子より構成されているため、長年に渡つ
て、変換所用避雷器の機械的荷重がかかると、碍
子に歪みや破損が生じる。また、温度差等の環境
条件によつて、中空碍子のセメンジング部に凍結
等による膨脹ストレスがかかり、碍子に歪みや破
損が生じることがあつた。すると、それらの破損
部分から中空碍子の内部に水分が侵入し、吸湿等
を起こし、中空碍子内部で電気的閃絡を起こす。
その結果、絶縁架台１と併設されている下部アー
ム側のサイリスタバルブにおいても閃絡が生じ、
変換所の運転を停止しなければならなかつた。 In addition, an insulating frame 1 that supports a lightning arrester 4 for a conversion station is also provided.
Since it is composed of a hollow insulator, the insulator will become distorted or damaged if the mechanical load of the lightning arrester for a conversion station is applied over many years. Furthermore, due to environmental conditions such as temperature differences, expansion stress due to freezing or the like is applied to the cemented portion of the hollow insulator, which may cause distortion or damage to the insulator. Then, moisture enters the inside of the hollow insulator through these damaged parts, causing moisture absorption, etc., and causing electrical flashing inside the hollow insulator.
As a result, flash shorting also occurs in the thyristor valve on the lower arm side that is attached to the insulating frame 1.
The converter station had to be shut down.
（発明が解決しようとする問題点）
上記の様に、従来の変換所用避雷器において
は、極性反転が生じた場合、絶縁架台のベース部
周辺にコロナが発生し、変換所用避雷器の電位分
布に乱えを生じ、変換所用避雷器の付属機器の誤
動作を引き起こしていた。(Problems to be Solved by the Invention) As described above, in conventional lightning arresters for converter stations, when polarity reversal occurs, corona is generated around the base of the insulating stand, which disturbs the potential distribution of the lightning arrester for converter stations. This caused the malfunction of the equipment attached to the lightning arrester for the converter station.
また、絶縁架台を構成する中空碍子に歪みや破
損が生じ易く、絶縁架台内部において電気的閃絡
が生じ、下部アーム側のスタイリスタバルブにお
いても閃絡が生じ、変換所の運転を停止しなけれ
ばならなかつた。 In addition, the hollow insulators that make up the insulating pedestal are easily distorted and damaged, causing electrical flashovers inside the insulating pedestal and flashovers also occurring in the stylistor valve on the lower arm side, making it necessary to stop operation of the converter station. It was impossible.
そこで、本発明は以上の欠点を除去するために
提案されたもので、その目的は、極性反転が起こ
つても絶縁架台のベース部においてコロナが発生
せず、また、サイリスタバルブの下部アーム側に
閃絡が生じない信頼性の高い変換所用避雷器を提
供することにある。 Therefore, the present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose is to prevent corona from occurring at the base of the insulating frame even if polarity reversal occurs, and to prevent corona from occurring on the lower arm side of the thyristor valve. An object of the present invention is to provide a highly reliable lightning arrester for a converter station that does not cause flash faults.
［発明の構成］
（問題点を解決するための手段）
本発明の変換所用避雷器は、絶縁架台上に配設
されたベース上に放電カウンター、付磁コイル等
の避雷器の付属機器及び端子類を配置し、この付
属機器及び端子類の周囲を取り囲むように、前記
ベースにシールドリングが配設し、また、絶縁架
台を中実碍子を用いて構成したものである。[Structure of the Invention] (Means for Solving the Problems) The lightning arrester for a converter station of the present invention includes a discharge counter, a magnetizing coil, and other accessories of the lightning arrester and terminals on a base arranged on an insulating frame. A shield ring is disposed on the base so as to surround the attached equipment and terminals, and an insulating frame is constructed using a solid insulator.
（作用）
本発明の変換所用避雷器は、変換所用避雷器と
絶縁架台の間に配設されるベース上に配置された
避雷器の付属機器及び端子類の周囲を取り囲むよ
うに、ベースにシールドリングが配設されている
ので、これらの先端の電界を緩和することがで
き、極性反転が起こつても、避雷器の付属機器及
び端子類が配設されているベース部分にコロナが
発生することを防止できる。(Function) The lightning arrester for a conversion station of the present invention has a shield ring arranged on the base so as to surround the accessories and terminals of the lightning arrester placed on the base arranged between the lightning arrester for a conversion station and an insulating frame. Because of this, the electric field at the tips of these can be relaxed, and even if polarity reversal occurs, it is possible to prevent corona from being generated in the base portion where the accessories and terminals of the lightning arrester are installed.
また、絶縁架台を複数本の中実碍子を適宜積層
したり、適宜並列に配置して構成することによ
り、絶縁架台の機械的強度及び電気的強度を高
め、絶縁架台内部における閃絡を防止したもので
ある。 In addition, by constructing the insulating frame by laminating multiple solid insulators or arranging them in parallel as appropriate, the mechanical and electrical strength of the insulating frame can be increased and flash shorts inside the insulating frame can be prevented. It is something.
（実施例）
以下、本発明の一実施例を第１図乃至第３図に
基づいて具体的に説明する。なお、第４図に示し
た従来型と同一の部材は同一の符号を付し説明は
省略する。(Example) Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 to 3. Incidentally, the same members as those of the conventional type shown in FIG. 4 are given the same reference numerals, and explanations thereof will be omitted.
＊実施例の構成＊
本実施例においては、第１図に示した様に、所
要高さＨを有する絶縁架台１０の上部に、上部に
線路端子３ａ、下部に線路端子３ｂを有する変換
所用避雷器４がベース５を介して配設されてい
る。*Configuration of Example* In this example, as shown in FIG. 1, a lightning arrester for a converter station is installed on the upper part of an insulating pedestal 10 having a required height H, and has a line terminal 3a at the upper part and a line terminal 3b at the lower part. 4 is disposed via the base 5.
また、第２図及び第３図に示した様に、ベース
５の上側には、変換所用避雷器の線路端子３ｂの
周辺に、変換所用避雷器の付属機器である放電カ
ウンター１１、付磁コイル１２等が配設され、線
路端子３ｃから他の機器、例えばサイリスタバル
ブ保護用Ａ−Ｋ間避雷器では、サイリスタバルブ
側へ結線されるように構成されている。そして、
ベース５上に配設された変換所用避雷器の付属機
器を取囲むように、シールドリング１３が配設さ
れている。 As shown in FIGS. 2 and 3, on the upper side of the base 5, around the line terminal 3b of the lightning arrester for a conversion station, a discharge counter 11, a magnetic coil 12, etc., which are accessories of the lightning arrester for a conversion station, etc. is arranged, and the line terminal 3c is configured to be connected to other equipment, such as a thyristor valve protection A-K lightning arrester, to the thyristor valve side. and,
A shield ring 13 is arranged so as to surround the accessory equipment of the lightning arrester for a converter station arranged on the base 5.
さらに、絶縁架台１０は、第１図に示した様
に、複数本の笠径の小さい中実碍子から構成され
ている。即ち、その上部に配設される変換所用避
雷器４の荷重を十分に支持することができる様
に、複数個の碍子１０ａ，１０ｂ，１０ｃが適宜
並列に配置され、また、所要の高さＨとなるよう
に適宜積層され、その上部にベース５を介して変
換所用避雷器４が配設されている。 Furthermore, as shown in FIG. 1, the insulating frame 10 is composed of a plurality of solid insulators with small diameter caps. That is, a plurality of insulators 10a, 10b, 10c are appropriately arranged in parallel so as to be able to sufficiently support the load of the converter station lightning arrester 4 disposed above it, and the required height H and The lightning arrester 4 for a converter station is disposed on top of the stacked layers with a base 5 interposed therebetween.
＊実施例の作用＊
上記の様な構成を有する本実施例においては、
極性反転が起こり、変換所用避雷器４の下部線路
端子３ｂが高圧側となつても、ベース５上に配設
された変換所用避雷器の付属機器１１，１２や線
路端子３ｂ，３ｃ等を取り囲むようにシールドリ
ング１３が配設されているので、これらの先端の
電界を緩和することができ、ベース５上における
コロナの発生を防止することができる。その結
果、変換所用避雷器の電位分布の乱れや、避雷器
の付属機器１１，１２等の誤動作、また、周囲の
機器への電波障害等を防止することができる。*Effect of the embodiment* In this embodiment having the above configuration,
Even if polarity reversal occurs and the lower line terminal 3b of the converter station lightning arrester 4 becomes the high voltage side, the line terminals 3b, 3c, etc. of the converter station lightning arrester placed on the base 5 are surrounded. Since the shield ring 13 is provided, the electric field at these tips can be relaxed, and the generation of corona on the base 5 can be prevented. As a result, it is possible to prevent disturbances in the potential distribution of the lightning arrester for a conversion station, malfunctions of the lightning arrester's attached devices 11, 12, etc., and radio wave interference to surrounding devices.
また、絶縁架台１０が複数本の笠径の小さい中
実碍子を並列に配置したり、積層して構成されて
いるので、変換所用避雷器の荷重による機械的ス
トレスにも十分に耐えることができ、また、耐震
性にも優れている。さらに、中実碍子を用いてい
るので、碍子が破損してその内部に水分が侵入す
るということもなく、絶縁架台内部で電気的閃絡
を起こすことを防止できる。また、絶縁架台内部
における閃絡を防止できるので、下部アーム側の
サイリスタバルブにおける閃絡も防止することが
でき、変換所を停止させるといつた大きな事故を
防止することができる。 In addition, since the insulating frame 10 is constructed by arranging or stacking a plurality of solid insulators with small shade diameters in parallel, it can sufficiently withstand mechanical stress due to the load of the lightning arrester for the conversion station. It also has excellent earthquake resistance. Furthermore, since a solid insulator is used, there is no possibility that the insulator will be damaged and moisture will enter into the insulator, thereby preventing electrical flash from occurring inside the insulating frame. Furthermore, since flash faults can be prevented inside the insulating frame, flash faults in the thyristor valve on the lower arm side can also be prevented, and major accidents such as stopping the conversion station can be prevented.
＊他の実施例＊
本発明は上述の実施例に限定されるものではな
く、絶縁架台を構成する中実碍子は、絶縁架台の
所要高さに応じて適宜段数積層し、また、変換所
用避雷器の荷重に応じて適宜個数を並列に配置し
てよい。*Other Examples* The present invention is not limited to the above-mentioned embodiments, and the solid insulators constituting the insulating pedestal are laminated in an appropriate number of stages depending on the required height of the insulating pedestal. An appropriate number may be arranged in parallel depending on the load.
また、絶縁架台を一本の碍子から構成する場合
は、その碍子笠径は複数個の碍子を並列に配置し
て用いる場合の碍子の笠径に比べて大きくなる
が、碍子は中実であるので、変換所用避雷器の荷
重によつて碍子に歪みや破損を生じることはな
い。なお、この場合、碍子笠径は上部に配設され
る変換所用避雷器の荷重を十分に支えられるもの
とする。 In addition, when the insulating stand is constructed from a single insulator, the diameter of the insulator is larger than the diameter of the insulator when multiple insulators are arranged in parallel, but the insulator is solid. Therefore, the insulator will not be distorted or damaged by the load of the lightning arrester for the conversion station. In this case, the diameter of the insulator shade shall be sufficient to support the load of the lightning arrester for the converter station installed above.
［発明の効果］
以上述べた様に、本発明によれば、絶縁架台と
変換所用避雷器の接合部に配設されるベース部
に、変換所用避雷器の付属機器を配置し、その周
囲をシールドリングで取り囲み、また、絶縁碍子
を笠径及び高さの小さい中実碍子を複数個組合せ
て構成するという簡単な手段によつて、極性反転
が起こつても絶縁架台のベース部においてコロナ
が発生せず、また、サイリスタバルブの下部アー
ム側に閃絡が生じない信頼性の高い変換所用避雷
器を提供することができる。[Effects of the Invention] As described above, according to the present invention, the accessory equipment of the lightning arrester for a conversion station is arranged at the base part arranged at the joint between the insulating pedestal and the lightning arrester for a conversion station, and a shield ring is placed around it. Even if polarity reversal occurs, corona will not be generated at the base of the insulating frame by simply constructing the insulator by combining multiple solid insulators with small shade diameters and heights. Furthermore, it is possible to provide a highly reliable lightning arrester for a converter station that does not cause flash flash on the lower arm side of the thyristor valve.
第１図Ａ及びＢは本発明の変換所用避雷器の一
実施例を示す側面図及びベース部の平面図、第２
図は、本発明によるベース部上面を示す平面図、
第３図は、第２図の要部拡大図、第４図Ａ及びＢ
は、それぞれ従来の変換所用避雷器の構成を示す
側面図である。
１……絶縁架台、２……架構、３ａ，３ｂ，３
ｃ……線路端子、４……変換所用避雷器、５……
ベース、６……避雷器付属機器、１０……絶縁架
台、１１……放電カウンター、１２……付磁コイ
ル、１３……シールドリング。
1A and 1B are a side view and a plan view of the base part showing one embodiment of the lightning arrester for a converter station according to the present invention;
The figure is a plan view showing the top surface of the base part according to the present invention;
Figure 3 is an enlarged view of the main part of Figure 2, Figure 4 A and B
1 and 2 are side views showing the configuration of a conventional lightning arrester for a converter station, respectively. 1... Insulating frame, 2... Frame, 3a, 3b, 3
c...Line terminal, 4...Surge arrester for conversion station, 5...
Base, 6... Lightning arrester accessory equipment, 10... Insulating stand, 11... Discharge counter, 12... Magnetic coil, 13... Shield ring.
Claims (1)
にベースを介して配設されている変換所用避雷器
において、 前記ベース上に避雷器の付属機器及び端子類が
配置され、この付属機器及び端子類の周囲を取り
囲むように、前記ベースにシールドリングが配設
されていることを特徴とする変換所用避雷器。 ２ 前記絶縁架台が、中実碍子を用いて構成され
たものである特許請求の範囲第１項記載の変換所
用避雷器。 ３ 前記絶縁架台が、変換所用避雷器を所要の高
さに配置できるように、複数個の中実碍子を適宜
積層して構成されたものである特許請求の範囲第
１項記載の変換所用避雷器。 ４ 前記絶縁架台が、変換所用避雷器の荷重を均
等に支えることができるように、複数個の中実碍
子を適宜並列に配置して構成されたものである特
許請求の範囲第１項記載の変換所用避雷器。[Scope of Claims] 1. A lightning arrester for a converter station that has line terminals at the upper and lower parts and is arranged on an insulating frame via a base, in which accessories and terminals of the lightning arrester are arranged on the base, A lightning arrester for a converter station, characterized in that a shield ring is disposed on the base so as to surround the accessory equipment and terminals. 2. The lightning arrester for a converter station according to claim 1, wherein the insulating frame is constructed using a solid insulator. 3. The lightning arrester for a converter station according to claim 1, wherein the insulating pedestal is constructed by appropriately laminating a plurality of solid insulators so that the lightning arrester for a converter station can be arranged at a required height. 4. The conversion according to claim 1, wherein the insulating frame is constructed by appropriately arranging a plurality of solid insulators in parallel so that the load of a lightning arrester for a conversion station can be evenly supported. Lightning arrester for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24548586A JPS63100703A (en) | 1986-10-17 | 1986-10-17 | Arrestor for converting station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24548586A JPS63100703A (en) | 1986-10-17 | 1986-10-17 | Arrestor for converting station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63100703A JPS63100703A (en) | 1988-05-02 |
| JPH0531802B2 true JPH0531802B2 (en) | 1993-05-13 |
Family
ID=17134360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24548586A Granted JPS63100703A (en) | 1986-10-17 | 1986-10-17 | Arrestor for converting station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63100703A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812010A (en) * | 2014-03-12 | 2014-05-21 | 陈勃闻 | Two-stage series gap lightning flashover protector with discharge counter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721085A (en) * | 1980-07-14 | 1982-02-03 | Hitachi Ltd | Tank type arrester |
-
1986
- 1986-10-17 JP JP24548586A patent/JPS63100703A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63100703A (en) | 1988-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |