JPH0574284B2 - - Google Patents
Info
- Publication number
- JPH0574284B2 JPH0574284B2 JP59121812A JP12181284A JPH0574284B2 JP H0574284 B2 JPH0574284 B2 JP H0574284B2 JP 59121812 A JP59121812 A JP 59121812A JP 12181284 A JP12181284 A JP 12181284A JP H0574284 B2 JPH0574284 B2 JP H0574284B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- gas pressure
- insulated switchgear
- monitoring device
- changes
- 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
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- Testing Relating To Insulation (AREA)
- Gas-Insulated Switchgears (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はガス絶縁開閉装置のガス監視装置に係
り、特にサージによる伝送妨害を受けることなく
該ガス絶縁開閉装置の地絡及びガス漏れ等の状態
を集中監視するのに適したガス監視装置の監視装
置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a gas monitoring device for a gas insulated switchgear, and in particular, detects conditions such as ground faults and gas leaks in the gas insulated switchgear without receiving transmission interference due to surges. The present invention relates to a monitoring device for a gas monitoring device suitable for centrally monitoring.
一般に、ガス絶縁開閉装置のガス監視は、各密
閉容器に各々設けられたブルドン管式のガス圧測
定装置を備えた監視箱が設置され、日常の点検時
にガス圧をチエツクする監視法が採用されていた
ので日常の点検時間がかかり該ガス絶縁開閉装置
全体のガス圧を短時間に把握するのが困難であつ
た。また、地絡故障検出には、特開昭56−29423
に示されるような閃絡光を検出する方法や第３図
に示されるようなガス圧を検出する方法があつ
た。
Generally, for gas monitoring of gas-insulated switchgear, a monitoring method is adopted in which a monitoring box equipped with a Bourdon tube type gas pressure measuring device is installed in each sealed container, and the gas pressure is checked during daily inspections. Therefore, it took time for daily inspections and it was difficult to grasp the gas pressure of the entire gas insulated switchgear in a short time. In addition, for ground fault detection, Japanese Patent Application Laid-Open No. 56-29423
There was a method of detecting flashlight as shown in Figure 3, and a method of detecting gas pressure as shown in Figure 3.
第３図は従来のガス絶縁開閉装置のガス監視装
置の一実施例を示すブロツク図である。第３図に
おいて、ガス絶縁開閉装置のガス監視装置は、密
閉容器に収納され封入されたガスにより開閉部が
絶縁されるガス絶縁開閉装置１と、該ガス絶縁開
閉装置１からパイプにより連通された高圧側ベロ
ーズ３と、該高圧側ベローズ３及び低圧側ベロー
ズ５の間に設けられた該ガス絶縁開閉装置１のガ
ス圧変化を外部に取り出すマイクロスイツチ４
と、該高圧側ベローズ３に連接された低圧側ベロ
ーズ５と、該低圧側ベローズ５からパイプにより
連通されたデツドボリユーム６と、該デツトボリ
ユーム６の他端からパイプにより該ガス絶縁開閉
装置１に連通される途中に設けられガス流を調整
するチヨーク７とから構成されている。 FIG. 3 is a block diagram showing an embodiment of a conventional gas monitoring device for a gas insulated switchgear. In FIG. 3, the gas monitoring device of the gas insulated switchgear is connected to a gas insulated switchgear 1 whose opening/closing parts are insulated by gas sealed in an airtight container, and from the gas insulated switchgear 1 through a pipe. A high-pressure side bellows 3 and a micro switch 4 that takes out gas pressure changes of the gas insulated switchgear 1 provided between the high-pressure side bellows 3 and the low-pressure side bellows 5 to the outside.
, a low pressure side bellows 5 connected to the high pressure side bellows 3, a dead volume 6 communicating from the low pressure side bellows 5 through a pipe, and a dead volume 6 communicating from the other end of the dead volume 6 to the gas insulated switchgear 1 through a pipe. It consists of a choke 7 that is provided midway through the gas flow and adjusts the gas flow.
前記構成において、該ガス絶縁開閉装置１にお
ける地絡故障時のアーク２及び正常運転時の温度
上昇におけるガス圧の上昇は、該高圧側ベローズ
３に対して直接に伝わる該低圧側ベローズ５に対
しては該チヨーク７によつて調整されたのち伝わ
る。このため、該高圧側ベローズ３は伸長し該マ
イクロスイツチ４が閉成され、表示８を出力す
る。したがつて、一定値以上のガス圧変化が発生
したことは検出できるが、そのガス圧変化が地絡
故障によるものが正種運転時の温度上昇によるも
か判別する考慮がされていなかつた。 In the above configuration, the arc 2 in the gas insulated switchgear 1 at the time of a ground fault failure and the increase in gas pressure due to the temperature rise during normal operation are transmitted directly to the high pressure side bellows 3 and to the low pressure side bellows 5. The signal is transmitted after being adjusted by the yoke 7. Therefore, the high voltage side bellows 3 is expanded, the micro switch 4 is closed, and the display 8 is output. Therefore, although it is possible to detect the occurrence of a gas pressure change exceeding a certain value, no consideration has been given to determining whether the gas pressure change is due to a ground fault or a temperature rise during normal operation.
本発明の目的は、前記従来技術の問題点を解消
し、サージによる伝送妨害を受けることなく該ガ
ス絶縁開閉装置のガス圧値を一定周期毎に該監視
装置に取り込み、そのガス圧値の時間適変化の違
いにより該ガス絶縁開閉装置の地絡及びガス漏れ
等の状態を集中監視することのできるガス絶縁開
閉装置のガス監視装置を提供することにある。
An object of the present invention is to solve the problems of the prior art described above, to import the gas pressure value of the gas insulated switchgear into the monitoring device at regular intervals without receiving transmission interference due to surges, and to transmit the gas pressure value to the monitoring device at regular intervals. It is an object of the present invention to provide a gas monitoring device for a gas insulated switchgear that can centrally monitor conditions such as ground faults and gas leaks of the gas insulated switchgear by varying the appropriateness.
本発明の密閉容器に収納され封入されたガスに
より開閉部が絶縁されるガス絶縁開閉装置に用い
られるガス監視装置は、前記目的に達成するた
め、該ガス絶縁開閉装置に封入されたガスのガス
圧を検出するガス圧検知装置と、該ガス圧検知装
置により検出された信号を遠方に伝送する伝送路
と、該伝送路により送られた信号を取り込み該ガ
ス絶縁開閉装置の状態を監視する監視装置とを備
え、前記監視装置は、該ガス絶縁開閉装置のガス
圧を該ガス圧検出装置により一定周期毎に検出す
るとともに、該伝送路を介して取り込んだガス圧
値に基づき、該監視装置内の計算機によつて、ガ
ス圧値の時間的変化の違いを判別し、該時間的変
化の違いによつて正常運転時の温度変化によるガ
ス圧変化及びガス漏れによるガス圧変化並びに地
絡時におけるガス圧変化としてとらえることを特
徴とする。
In order to achieve the above object, the gas monitoring device used in a gas insulated switchgear whose opening/closing part is insulated by the gas stored and sealed in an airtight container of the present invention has the following features: A gas pressure detection device that detects pressure, a transmission line that transmits the signal detected by the gas pressure detection device to a distant place, and a monitor that captures the signal sent by the transmission line and monitors the status of the gas insulated switchgear. The monitoring device detects the gas pressure of the gas insulated switchgear at regular intervals using the gas pressure detection device, and detects the gas pressure of the gas insulated switchgear based on the gas pressure value taken in via the transmission line. The internal calculator determines differences in the temporal changes in gas pressure values, and uses the differences in temporal changes to determine changes in gas pressure due to temperature changes during normal operation, gas pressure changes due to gas leaks, and in the event of a ground fault. It is characterized by being interpreted as a change in gas pressure at .
つぎに、本発明を図面を参照して詳しく説明す
る。
Next, the present invention will be explained in detail with reference to the drawings.
第１図は本発明の適用されるガス絶縁装置のガ
ス監視装置の一実施例を示すブロツク図である。
第１図において、ガス絶縁開閉装置のガス監視装
置は、密閉容器に収納され封入されたガスにより
開閉部が絶縁されるガス絶縁開閉装置１と、該ガ
ス絶縁開閉装置１に封入されたガス圧を一定周期
毎に検出するガス圧検知装置９と、該ガス圧検知
装置９より検出されたガス圧値を伝送する光フア
イバ１２と、該光フアイバ１２より伝送されたガ
ス圧値を取り込み処理することによつて該ガス絶
縁開閉装置１の状態を監視する監視装置１３とか
ら構成されている。 FIG. 1 is a block diagram showing an embodiment of a gas monitoring device for a gas insulating device to which the present invention is applied.
In FIG. 1, a gas monitoring device for a gas insulated switchgear includes a gas insulated switchgear 1 whose opening/closing parts are insulated by gas sealed in a sealed container, and a gas pressure sealed in the gas insulated switchgear 1. a gas pressure detection device 9 that detects the gas pressure at regular intervals, an optical fiber 12 that transmits the gas pressure value detected by the gas pressure detection device 9, and an optical fiber 12 that captures and processes the gas pressure value transmitted from the optical fiber 12. A monitoring device 13 for monitoring the state of the gas insulated switchgear 1.
そして、該ガス圧検知装置９は、ピエゾ効果を
利用して該ガス絶縁開閉装置１に封入されたガス
のガス圧を検出する圧力センサ１０と、該圧力セ
ンサ１０より検出されるアナログ信号とデジタル
信号に変換するＡ／Ｄ変換器１１とから構成され
ている。 The gas pressure detection device 9 includes a pressure sensor 10 that detects the gas pressure of the gas sealed in the gas insulated switchgear 1 using the piezo effect, and an analog signal detected by the pressure sensor 10 and a digital signal. It is composed of an A/D converter 11 that converts into a signal.
さらに、該監視装置１３は、該光フアイバ１２
より伝送された信号を取り込むとともに該ガス絶
縁開閉装置１の状態を表示する監視表示器１４
と、該監視表示器１４に取り込まれたガス圧値の
時間的変化を処理する計算機１５とから構成され
ている。 Further, the monitoring device 13
A monitoring display 14 that receives signals transmitted from the gas insulated switchgear 1 and displays the status of the gas insulated switchgear 1.
and a computer 15 that processes temporal changes in gas pressure values taken into the monitoring display 14.
前記構成において、該ガス絶縁開閉装置１に封
入されたガスの圧力変化は、該圧力センサ１０に
よりピエゾ効果によつて外部に取り出されたの
ち、そのアナログ信号をＡ／Ｄ変換器１１におい
てデジタル信号とする。そして、該ガス絶縁開閉
装置１に発生するサージにより伝送される信号が
妨害されないように伝送路には光フアイバ１２が
採用されている。つぎに、該光フアイバ１２より
伝送された信号は、該監視装置１３に取り込まれ
た該計算機１５によつてガス圧値の時間的変化の
違いが判別され、その結果が該監視表示器１４に
表示される。 In the above configuration, the pressure change of the gas sealed in the gas insulated switchgear 1 is extracted to the outside by the pressure sensor 10 due to the piezo effect, and then the analog signal is converted into a digital signal by the A/D converter 11. shall be. An optical fiber 12 is used in the transmission path so that the transmitted signal is not disturbed by surges generated in the gas insulated switchgear 1. Next, the signal transmitted from the optical fiber 12 is inputted into the monitoring device 13 by the computer 15 to determine the difference in the temporal change in gas pressure value, and the result is displayed on the monitoring display 14. Is displayed.
第２図はガス圧値測定の一例を示すタイムチヤ
ートである。第２図において、該ガス圧検知装置
９により一定時間Δt毎に検出された該ガス絶縁
開閉装置１のガス圧値は、該監視装置１３に取り
込まれ時間的変化が監視される。 FIG. 2 is a time chart showing an example of gas pressure value measurement. In FIG. 2, the gas pressure value of the gas insulated switchgear 1 detected by the gas pressure detection device 9 at fixed time intervals Δt is taken into the monitoring device 13 and temporal changes are monitored.
したがつて、該ガス絶縁開閉装置１において地
絡が発生したときのガス圧変化ΔP1／Δtは、該ガ
ス絶縁開閉装置１における常時運転中の温度変化
によるガス圧変化ΔP2／Δtと判別することが可能
であり、該ガス絶縁開閉装置１におけるガス監視
区分のどこに地絡が発生したか容易に確認するこ
とができる。また、ガス圧値の変化を該計算機１
５に記憶させておくことにより、ガス圧値の時間
的変化によつて該ガス絶縁開閉装置１のガス漏れ
を予知することもできる。 Therefore, the gas pressure change ΔP 1 /Δt when a ground fault occurs in the gas insulated switchgear 1 is determined from the gas pressure change ΔP 2 /Δt due to temperature change during constant operation in the gas insulated switchgear 1. It is possible to easily confirm where in the gas monitoring section of the gas insulated switchgear 1 a ground fault has occurred. In addition, the change in gas pressure value can be calculated using the calculator 1.
5, it is also possible to predict gas leakage from the gas insulated switchgear 1 based on temporal changes in the gas pressure value.
本発明は、前述したところにより容易に理解さ
れるように、サージによる伝送妨害を受けること
なく該ガス絶縁開閉装置のガス圧値を一定周期毎
に該監視装置に取り込み、そのガス圧値の時間的
変化の違いにより該ガス絶縁開閉装置の地絡及び
ガス漏れ等の状態を検出できるようにしたので、
遠方において該ガス絶縁開閉装置の状態が監視で
きることによつて変電所の無人化が可能であり保
守性の向上及び信頼性の向上も図れるという利点
がある。
As can be easily understood from the foregoing, the present invention allows the gas pressure value of the gas insulated switchgear to be read into the monitoring device at regular intervals without receiving transmission interference due to surges, and the time of the gas pressure value is This makes it possible to detect conditions such as ground faults and gas leaks in the gas insulated switchgear based on the difference in physical changes.
Since the status of the gas insulated switchgear can be monitored from a distance, the substation can be unmanned and has the advantage of improving maintainability and reliability.
第１図は本発明の適用されるガス絶縁開閉装置
のガス監視装置の一実施例を示すブロツク図、第
２図はガス圧値測定の一例を示すタイムチヤー
ト、第３図は従来のガス絶縁開閉装置のガス監視
装置の一実施例を示すブロツク図である。
１……ガス絶縁開閉装置、２……アーク、３…
…高圧側ベローズ、４……マイクロスイツチ、５
……低圧側ベローズ、６……デツドボリユーム、
７……チヨーク、８……表示、９……ガス圧検知
装置、１０……圧力センサ、１１……Ａ／Ｄ変換
器、１２……光フアイバ、１３……監視装置、１
４……監視表示器、１５……計算機。
Fig. 1 is a block diagram showing an example of a gas monitoring device for gas insulated switchgear to which the present invention is applied, Fig. 2 is a time chart showing an example of gas pressure value measurement, and Fig. 3 is a conventional gas insulated switchgear. 1 is a block diagram showing an embodiment of a gas monitoring device for a switchgear. 1... Gas insulated switchgear, 2... Arc, 3...
...High pressure side bellows, 4...Micro switch, 5
...Low pressure side bellows, 6...Dead volume,
7...Chiyoke, 8...Display, 9...Gas pressure detection device, 10...Pressure sensor, 11...A/D converter, 12...Optical fiber, 13...Monitoring device, 1
4... Monitoring display, 15... Calculator.
Claims (1)
閉部が絶縁されるガス絶縁開閉装置に用いられる
ガス監視装置であつて、 該ガス絶縁開閉装置に封入されたガスのガス圧
を検出するガス圧検知装置と、該ガス圧検知装置
により検出された信号を遠方に伝送する伝送路
と、該伝送路により送られた信号を取り込み該ガ
ス絶縁開閉装置の状態を監視する監視装置とを備
え、 前記監視装置は、該ガス絶縁開閉装置のガス圧
を該ガス圧検出装置により一定周期毎に検出する
とともに、該伝送路を介して取り込んだガス圧値
に基づき、該監視装置内の計算機によつて、ガス
圧値の時間的変化の違いを判別し、該時間的変化
の違いによつて正常運転時の温度変化によるガス
圧変化及びガス漏れによるガス圧変化並びに地絡
時におけるガス圧変化としてとらえることを特徴
とするガス絶縁開閉装置のガス監視装置。[Scope of Claims] 1. A gas monitoring device used in a gas-insulated switchgear whose opening/closing parts are insulated by gas stored and sealed in a closed container, which monitors the gas pressure of the gas sealed in the gas-insulated switchgear. a gas pressure detection device that detects gas pressure, a transmission line that transmits the signal detected by the gas pressure detection device to a distant place, and a monitoring device that captures the signal sent by the transmission line and monitors the state of the gas insulated switchgear. The monitoring device detects the gas pressure of the gas insulated switchgear at regular intervals with the gas pressure detection device, and detects the gas pressure in the monitoring device based on the gas pressure value taken in via the transmission line. The calculator determines the differences in the temporal changes in the gas pressure value, and uses the differences in the temporal changes to calculate gas pressure changes due to temperature changes during normal operation, gas pressure changes due to gas leaks, and gas pressure changes in the event of a ground fault. A gas monitoring device for gas insulated switchgear that detects changes in gas pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59121812A JPS614407A (en) | 1984-06-15 | 1984-06-15 | Gas monitor of gas insulated switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59121812A JPS614407A (en) | 1984-06-15 | 1984-06-15 | Gas monitor of gas insulated switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS614407A JPS614407A (en) | 1986-01-10 |
| JPH0574284B2 true JPH0574284B2 (en) | 1993-10-18 |
Family
ID=14820536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59121812A Granted JPS614407A (en) | 1984-06-15 | 1984-06-15 | Gas monitor of gas insulated switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614407A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0691687B2 (en) * | 1986-07-21 | 1994-11-14 | 株式会社東芝 | Gas pressure monitoring device for gas insulated switchgear |
| JPH0787670B2 (en) * | 1989-01-25 | 1995-09-20 | 三菱電機株式会社 | Gas pressure abnormality detection device for gas insulation equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5074744A (en) * | 1973-11-07 | 1975-06-19 | Mitsubishi Electric Corp | Fault detection apparatus for electric equipment |
| JPS5556411A (en) * | 1978-10-20 | 1980-04-25 | Hitachi Ltd | Preventive diagnozing device for power electric equipment |
| JPS56123733A (en) * | 1980-03-05 | 1981-09-29 | Hitachi Ltd | Internal accident detector in oillimmersed electric device |
| JPS5866520A (en) * | 1981-10-14 | 1983-04-20 | 株式会社東芝 | Gas pressure monitoring device for gas insulated equipment |
-
1984
- 1984-06-15 JP JP59121812A patent/JPS614407A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS614407A (en) | 1986-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |