JPS62134573A - Corona discharge monitoring system - Google Patents
Corona discharge monitoring systemInfo
- Publication number
- JPS62134573A JPS62134573A JP60275574A JP27557485A JPS62134573A JP S62134573 A JPS62134573 A JP S62134573A JP 60275574 A JP60275574 A JP 60275574A JP 27557485 A JP27557485 A JP 27557485A JP S62134573 A JPS62134573 A JP S62134573A
- Authority
- JP
- Japan
- Prior art keywords
- corona discharge
- corona
- signal
- electromagnetic wave
- alarm
- 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
Landscapes
- Testing Relating To Insulation (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は送受配電機器およびシステムにおけるコロナ
放電による絶縁劣化検知に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to detection of insulation deterioration due to corona discharge in power transmission/reception/distribution equipment and systems.
従来の送受配電機器およびシステムにおいてコロナ放電
による絶縁劣化を検知するには、定期的あるいは随時の
点検により、コロナ放電によるトラッキング痕跡の有無
により判断を行っていた。In conventional power transmission and distribution equipment and systems, insulation deterioration due to corona discharge has been detected through periodic or occasional inspections based on the presence or absence of tracking traces due to corona discharge.
従来のシステムによれば点検のたびに機器あるいはシス
テムの動作を停止し、分解等により点検を行なわねばな
らず、また事故を未然に防ぐためには点検回数を多く行
わなければならない等の問題点を自していた。According to conventional systems, each time an inspection is performed, the equipment or system must be stopped and inspected by disassembly, etc., and there are problems such as the need to conduct inspections many times to prevent accidents. I was doing it myself.
この発明は以上のような問題点を解決するためになされ
たもので、コロナ放電の初期現象により確実にコロナ放
電の発生を検知し、事故発生予防効果の高いシステムを
提供することを目的とする。This invention was made to solve the above-mentioned problems, and aims to provide a system that is highly effective in preventing accidents by reliably detecting the occurrence of corona discharge based on the initial phenomenon of corona discharge. .
この発明に係るコロナ放電監視システムは、コロナ放電
に伴って必ず発生する電磁波をアンテナで受清し、演算
処理を行・よい、警報を発し、コロナ放電発生箇所を表
示するものである。The corona discharge monitoring system according to the present invention uses an antenna to receive electromagnetic waves that are always generated due to corona discharge, performs arithmetic processing, issues an alarm, and displays the location where corona discharge occurs.
コロナ放電が発生するとそれに伴って電磁波が必ず発生
する。この電磁波に1.を高周波成分が含まれているの
で演算処理により低周波成分を除去し、他の原因による
電磁波と区別し、コロナ放電による電磁波のみを検出し
て、コロナ放電の発生を警報する。When corona discharge occurs, electromagnetic waves are always generated. This electromagnetic wave 1. Since it contains high-frequency components, the low-frequency components are removed through arithmetic processing to distinguish it from electromagnetic waves caused by other causes, and only the electromagnetic waves caused by corona discharge are detected and an alarm is issued for the occurrence of corona discharge.
第1図、第2図および第3図を用いてこの発明に係るコ
ロナ放電監視システムの一実施例を説明する。An embodiment of the corona discharge monitoring system according to the present invention will be described with reference to FIGS. 1, 2, and 3.
第1図はコロナ放電監視システムの構成を示す。FIG. 1 shows the configuration of the corona discharge monitoring system.
図においてダクト(1)の内部は一定間隔ごとに隔壁と
して作用する支持板(3)が多数段けら01表面を絶縁
被覆でおおわれた母線溝1本(2月よ、第2因に示すよ
うに支持板(3)により配管(1)の壁面と所定間隔を
保つように支持されている。In the figure, inside the duct (1), there are multiple supporting plates (3) that act as partition walls at regular intervals.The surface of the tiered sill 01 is covered with one bus bar groove (February, as shown in the second factor). It is supported by a support plate (3) so as to maintain a predetermined distance from the wall surface of the pipe (1).
互いに隣接する2枚の支持板(3)と配管(υの内面に
より形成された各密閉空間にはそれぞれアンテナ(4a
)、(4b)、(4c) −およびケーブル(5a)、
(5b) 。An antenna (4a
), (4b), (4c) - and cable (5a),
(5b).
(5c)・・・ が設けられている。ケーブル(5a)
、 (5bル(5C)・・・はそれぞれ制御ユニット(
6)に接続されている。(5c)... is provided. Cable (5a)
, (5b (5C)... are the control units (
6).
制御ユニット(6)は第8因に示すようにインターフェ
ース(6a) 、コロナ発生検出回路(6b) 、コロ
ナ発生箇所識別回路(6c) 、コロナ発生箇所表示i
1 (6d)および警報器(6e)で構成されている。As shown in the eighth factor, the control unit (6) includes an interface (6a), a corona occurrence detection circuit (6b), a corona occurrence location identification circuit (6c), and a corona occurrence location display i.
1 (6d) and an alarm (6e).
このシステムに用いられている配電盤(7)は例えば閉
鎖配電盤であるが、他のタイプの配m盤を用いてもよい
。The switchboard (7) used in this system is, for example, a closed switchboard, but other types of switchboards may also be used.
配管(1)は図に示すように配電盤(7)に接続さnる
母線導体(2)を保護するもので、絶縁耐力を高めるた
めに内部にSFAガスを封入してもよい。As shown in the figure, the pipe (1) protects the bus conductor (2) connected to the switchboard (7), and may be filled with SFA gas to increase dielectric strength.
母線導体(2)には通常6 KVの電圧が印加されてお
り、主に母線導体(2)と支持板(3)の間付近でコロ
ナ放電が発生することが多い。コロナ放電が発生すると
それに伴って必ず電磁波が発生する。この電磁波はダク
ト(1)内に設けられたアンテナ(4a)。A voltage of 6 KV is normally applied to the bus conductor (2), and corona discharge often occurs mainly in the vicinity between the bus conductor (2) and the support plate (3). When corona discharge occurs, electromagnetic waves are always generated. This electromagnetic wave is transmitted by an antenna (4a) installed inside the duct (1).
(4b)、 (4c)−により受信されケープA/ (
5a)、 (5b)−(5C)・・・ VCより伝送さ
n、制御ユニット(6)に入力さnる。ゲクl−(1)
は管内で発生した電磁波を管外に対してシールドする。(4b), (4c)- received by Cape A/ (
5a), (5b)-(5C)... Transmitted from the VC and input to the control unit (6). Geku l-(1)
shields electromagnetic waves generated inside the pipe from outside the pipe.
そのため、アンテナ(4a)。Therefore, the antenna (4a).
(4b)、 (4c)・・・はW内に設ける必要がある
。(4b), (4c)... need to be provided within W.
ケーブル(5a)、(5b)、 (5c)・・・ によ
り伝送された電磁波による信号はインターフェース(6
a)に入力さn、その出力はさらにコロナ発生検出回b
!li (6b)に入力される。コロナ放電により発生
した電磁波には高周波成分が含まれているため、このコ
ロナ発生検出回路(6b)では高周波成分を増幅し、低
周波成分IJフィルターにより除去し、また連続波ノイ
ズは検波等により除去することにより高周波コロナ放1
)4磁波のみを分離する1次にこうして分離さnた電磁
波信号をコンパレーターによりあらかじめ設定さnた一
定電圧と比較し、その値をと回る電圧であればコロナ放
電が発生したと判定する。さらにコロナ発生箇所識別回
路(6c)は受信アンテナを識別し、コロナ発生箇所表
示W (6d)の該当するランプを発光させるための信
号を出力してコロナ放電の発生箇所を表示する。また同
時にコロナ放電の発生を警告すべく警報1) (6e)
を鳴らすためのは号を出力する。The electromagnetic wave signals transmitted by the cables (5a), (5b), (5c)... are sent to the interface (6).
a) is input to n, and its output is further corona occurrence detection time b
! li (6b). Since the electromagnetic waves generated by corona discharge contain high frequency components, this corona generation detection circuit (6b) amplifies the high frequency components and removes the low frequency components using an IJ filter, and continuous wave noise is removed by detection etc. By doing so, high frequency corona emission 1
) The electromagnetic wave signal separated in this way is compared with a preset constant voltage by a comparator, and if the voltage exceeds that value, it is determined that a corona discharge has occurred. Furthermore, the corona occurrence point identification circuit (6c) identifies the receiving antenna and outputs a signal to cause the corresponding lamp of the corona occurrence point display W (6d) to emit light, thereby displaying the location where the corona discharge has occurred. At the same time, alarm 1) (6e) to warn of the occurrence of corona discharge.
Outputs the number to make the sound.
なお、k、紀実施例では、第2図に示すようにダイポー
ルアンテナを用いているが、モノポールアンテナでも可
能であり、また設置箇所も密閉空間の中央である必要は
なく、どちらかに片寄った場所であ・つてもかまわない
。In addition, in the embodiment, a dipole antenna is used as shown in Fig. 2, but a monopole antenna is also possible, and the installation location does not have to be in the center of the closed space, but can be placed on either side. It doesn't matter if it's somewhere else.
以と説明したように、この発明によればコロナ放電が発
生すると、はぼ同時にコロナ放題の発生を検知し警告す
ることが出来るので、事故発生予防効果の高いシステム
を提供することができる。As described above, according to the present invention, when corona discharge occurs, it is possible to detect and warn that the corona is running out of control almost at the same time, so it is possible to provide a system that is highly effective in preventing accidents.
第1図はこの発明に係るコロナ発生監視システムの構成
図、第2図は第1図におけるA−A断面図、第8図は制
御ユニット(6)の構成を示す図である。
図中(旧jダクト、(2)は母線導体、(3)は支持板
、(4a)、(4b)、(4c) +・はアンテナ、(
5a)、 (5b)、 (5c)・・・はケーブル、(
6)は制御ユニットである。FIG. 1 is a configuration diagram of a corona occurrence monitoring system according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 8 is a diagram showing the configuration of a control unit (6). In the figure (old J duct, (2) is the bus conductor, (3) is the support plate, (4a), (4b), (4c) + and is the antenna, (
5a), (5b), (5c)... are cables, (
6) is a control unit.
Claims (1)
ための支持板を2以上内部に設けたダクト、前記ダクト
内で互いに隣接する2枚の前記支持板により作られた各
密閉空間にそれぞれ設けられたアンテナと、 前記アンテナにより受信されたコロナ放電による電磁波
を第1の信号として伝送するケーブルと、前記ケーブル
により伝送された第1の信号を演算し、コロナ放電の発
生箇所を示す第2の信号を出力する演算処理部と、 前記第2の信号に基づいてコロナ放電の発生箇所を表示
する表示部と、 前記コロナ放電の発生を警告する警報手段、を具備した
コロナ放電監視システム。(1) A duct in which two or more support plates are provided inside the duct to support the housed busbars and form partition walls, and each support plate is provided in each sealed space created by two adjacent support plates in the duct. a cable that transmits an electromagnetic wave due to corona discharge received by the antenna as a first signal; and a second signal that calculates the first signal transmitted by the cable and indicates the location where the corona discharge occurs. A corona discharge monitoring system comprising: an arithmetic processing unit that outputs a signal; a display unit that displays a location where corona discharge occurs based on the second signal; and an alarm unit that warns of the occurrence of corona discharge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60275574A JPS62134573A (en) | 1985-12-06 | 1985-12-06 | Corona discharge monitoring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60275574A JPS62134573A (en) | 1985-12-06 | 1985-12-06 | Corona discharge monitoring system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62134573A true JPS62134573A (en) | 1987-06-17 |
Family
ID=17557348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60275574A Pending JPS62134573A (en) | 1985-12-06 | 1985-12-06 | Corona discharge monitoring system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62134573A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0356016A (en) * | 1989-07-21 | 1991-03-11 | Toshiba Corp | Device for detecting partial discharge in high-tension apparatus |
JPH03101479U (en) * | 1990-01-31 | 1991-10-23 |
-
1985
- 1985-12-06 JP JP60275574A patent/JPS62134573A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0356016A (en) * | 1989-07-21 | 1991-03-11 | Toshiba Corp | Device for detecting partial discharge in high-tension apparatus |
JPH03101479U (en) * | 1990-01-31 | 1991-10-23 |
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