JPS6056365B2 - Abnormality detection method for electrical equipment - Google Patents
Abnormality detection method for electrical equipmentInfo
- Publication number
- JPS6056365B2 JPS6056365B2 JP53090686A JP9068678A JPS6056365B2 JP S6056365 B2 JPS6056365 B2 JP S6056365B2 JP 53090686 A JP53090686 A JP 53090686A JP 9068678 A JP9068678 A JP 9068678A JP S6056365 B2 JPS6056365 B2 JP S6056365B2
- Authority
- JP
- Japan
- Prior art keywords
- substance
- detection
- gas
- electrical equipment
- abnormality detection
- 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
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
- Installation Of Bus-Bars (AREA)
Description
【発明の詳細な説明】
この発明は主として、SF6ガス機器内部の異常放電の
存在を検知する異常検知方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to an abnormality detection method for detecting the presence of abnormal discharge inside SF6 gas equipment.
従来、SF。Traditionally, SF.
ガス機器内部に発生する異常放電を検知する方法のうち
、コロナ放電等の微小放電を検知する方法として、微小
放電に付随して発生する光を検知する方法、音あるいは
振動を検知する方法、微小放電で発生した分解ガスを含
む絶縁媒体をガス分析する方法等がある。光を検知する
方法ては機器内部へ検知素子を組込まなければならない
こと、指先性を有すること等の欠点がある。音あるいは
振動を検知する方法では、検知素子を機器外部に設置す
る場合周囲の騒音条件によつて検出感度が左右されてし
まうこと、検知素子を機器内部に設置する場合、感度は
上昇するが、機器本体を改造することが必要なうえ、ガ
ス漏れを防止する対策を確保しておかねばならない欠点
がある。ガス分析による方法では、内部に通常配置され
ている吸着剤の影響をうけて、分解ガス濃度の上昇が抑
えられるため、微小な放電ほど検出が難し’くなる欠点
がある。Among the methods for detecting abnormal discharges that occur inside gas appliances, methods for detecting micro discharges such as corona discharge include methods that detect light generated accompanying micro discharges, methods that detect sound or vibration, and methods that detect micro discharges such as corona discharges. There is a method of gas analysis of an insulating medium containing decomposed gas generated by electric discharge. The method of detecting light has drawbacks, such as the need to incorporate a detection element into the device and the need for finger tips. With methods of detecting sound or vibration, if the detection element is installed outside the device, the detection sensitivity will be affected by the surrounding noise conditions, and if the detection element is installed inside the device, the sensitivity will increase, but This method has disadvantages in that it is necessary to modify the main body of the device, and measures must be taken to prevent gas leakage. Methods based on gas analysis have the disadvantage that the increase in decomposed gas concentration is suppressed due to the influence of the adsorbent normally placed inside, so the smaller the discharge, the more difficult it is to detect.
また、定常的な微小放電が存在する場合には、前記いず
れの方法においても、随時観測により検知可能となるが
、初期の間欠的な放電では随時観測では必ずしも検知で
きるとは限らず、かといつ・て常時観測するには多大の
費用を必要とする。この発明は上記問題点を解決するた
めになされたものであつて、異常放電により発生する分
解生成物を集積または惑知する検知物質の近傍に温度変
化により媒体の吸・脱着を行う吸・脱着物質を配置し、
温度変化によつて媒体の流れを生起させ、検知物質によ
る分解生成物の検知を高域度に行わしめる電気機器の異
常検知方式を提供することを目的とする。以下、この発
明を図示の一実施例にもとづいて具体的に説明する。In addition, if there is a steady microdischarge, it can be detected by occasional observation using any of the above methods, but intermittent discharges in the early stage cannot necessarily be detected by occasional observation;・Constant observation requires a large amount of money. This invention was made in order to solve the above problems, and is an adsorption/desorption method that adsorbs and desorbs a medium by temperature change in the vicinity of a detection substance that accumulates or misleads decomposition products generated by abnormal discharge. place the substance,
An object of the present invention is to provide an abnormality detection method for electrical equipment that causes a flow of a medium due to a temperature change and allows a detection substance to detect decomposition products in a high range. Hereinafter, the present invention will be specifically explained based on an illustrated embodiment.
図において、符号1は絶縁媒体であるSF6ガスを密封
しておくための電気機器(以下機器という。)の金属容
器、2はこの容器1内に充填されたSF6ガス(絶縁媒
体)、3は容器1内に収納された高電圧導体、42,4
2はSF6ガスを流通させるガス流通管、5は開閉弁、
6はガス流通管42に接続した検知部である。また第2
図および第3図は検知部6の容器の拡大図である。図に
おいて、61は本体容器、62は本体容器61のメクラ
蓋、63は上記本体容器61とメクラ蓋62とをガスシ
ールするためのパッキン、641,642はSF6ガス
通過可能な金網、65はSF6分解ガス(分解生成物)
を集積するための,多孔物質からなるガス集積物質(検
知物質)てあつて、たとえばシリカゲルが用いられる。
そして、このガス集積物質(検知物質)65は上記金網
641,642によつて、ガス流通管42の流通孔42
aの近傍の検知部6(第2図参照)内ま;たは流通孔4
2a内(第3図参照)に配置されている。66は温度変
化により著しいSF6ガスの吸・脱着をひきおこす合成
ゼオライト(吸・脱着物質)である。In the figure, numeral 1 is a metal container of an electrical device (hereinafter referred to as equipment) for sealing SF6 gas, which is an insulating medium, 2 is SF6 gas (insulating medium) filled in this container 1, and 3 is High voltage conductor housed in container 1, 42,4
2 is a gas distribution pipe for circulating SF6 gas, 5 is an on-off valve,
6 is a detection section connected to the gas flow pipe 42. Also the second
The figure and FIG. 3 are enlarged views of the container of the detection unit 6. In the figure, 61 is a main container, 62 is a blank lid of the main container 61, 63 is a packing for gas-sealing the main container 61 and the blank lid 62, 641 and 642 are wire meshes through which SF6 gas can pass, and 65 is an SF6 Decomposition gas (decomposition products)
For example, silica gel is used as a gas accumulating substance (sensing substance) made of a porous material for accumulating gas.
Then, this gas accumulation substance (detection substance) 65 is transferred to the communication hole 42 of the gas circulation pipe 42 by the wire mesh 641, 642.
Inside the detection part 6 (see Figure 2) near a or the communication hole 4
2a (see FIG. 3). 66 is a synthetic zeolite (adsorption/desorption substance) that causes significant adsorption/desorption of SF6 gas due to temperature changes.
次にこのような構成の装置における異常検知方j式につ
いて、動作説明を行う。Next, the operation of the abnormality detection method J in the apparatus having such a configuration will be explained.
SF6ガス機器内部に発生したSF4(四ふつ化硫黄)
SOF2(ふつ化チオニル)HF(ふつ化水素)等の活
性な含ふつ素SF6分解ガス(分解生成物)は、拡散、
対流によつて周囲のガス空間に発散しjていく。SF4 (sulfur tetrafluoride) generated inside SF6 gas equipment
Active fluorine-containing SF6 decomposition gases (decomposition products) such as SOF2 (thionyl fluoride) and HF (hydrogen fluoride) undergo diffusion,
It diverges into the surrounding gas space by convection.
稼動中の機器は通電時における発熱ばかりてなく、直射
日光によつても温度上昇がおこる。すなわち夜間になる
と機器本体にくらべて検知部6の部分は冷却が早く、こ
のため機器側からSF6ガスの流入がおこる。このとき
SF6ガス中に4含まれていたSF6分解ガス(分解生
成物)はガス流通管42の流通孔42a付近にガス集積
物質(検知物質)に吸着される。再び直射日光にさらさ
れた検知部6の合成ゼオライト(吸着物質)66は温度
上昇に伴つて吸着していたSF6ガスを放出する。Operating equipment not only generates heat when electricity is turned on, but also rises in temperature due to direct sunlight. That is, at night, the detection section 6 cools down faster than the main body of the device, and therefore SF6 gas flows in from the device side. At this time, the SF6 decomposition gas (decomposition product) contained in the SF6 gas is adsorbed by the gas accumulation substance (sensing substance) near the communication hole 42a of the gas circulation pipe 42. The synthetic zeolite (adsorbent material) 66 of the detection unit 6, which has been exposed to direct sunlight again, releases the adsorbed SF6 gas as the temperature rises.
このように、本体容器61内に、ガス集積物質65と供
に、温度変化により著しいSF6ガスの吸・脱着作用を
行う吸・脱着物質66を配置したので、温度変化によつ
て、SF6ガスの流れが発生するために、SF6分離ガ
ス(分解生成物)をガス集積物質(検知物質)65に高
濃度に集積することができる。In this way, the adsorption/desorption material 66 which performs a significant adsorption/desorption action on SF6 gas due to temperature changes is arranged in the main body container 61 together with the gas accumulating material 65. Because of the flow, the SF6 separation gas (decomposition products) can accumulate in the gas accumulating material (sensing material) 65 at a high concentration.
なお、機器内に通常設置されている合成ゼオライト等の
吸着剤につて機器内のSF6分解ガス濃度は低下するが
、これらの機器内部の吸着剤にくらべて多量の合成ゼオ
ライトを使用することにより、SF6分解ガスの高濃度
の集積が可能になる。Although the concentration of SF6 decomposed gas inside the equipment is reduced by adsorbents such as synthetic zeolite that are normally installed inside the equipment, by using a large amount of synthetic zeolite compared to the adsorbents inside these equipment, A high concentration of SF6 decomposition gas can be accumulated.
機器の稼動期間、たとえば6ケ月もしくはl年に1回採
取し、集積部分のF量を測定することにより放電の有無
を判定する。なお、上記実施例において、ガス集積物質
(検知物質)65の一例としてシリカゲル系の多孔性物
質を使用したが、SF6分解ガスの吸着能がよく、測定
時の抽出液側に妨害イオンを放出しにくい物質てあるほ
ど検出感度が上昇する。Samples are taken once every six months or one year during the operating period of the device, and the presence or absence of discharge is determined by measuring the amount of F in the accumulated portion. In the above example, a silica gel-based porous material was used as an example of the gas accumulating material (detection material) 65, but it has a good adsorption ability for SF6 decomposed gas and does not release interfering ions to the extract side during measurement. The more difficult the substance is, the higher the detection sensitivity becomes.
また分解ガス集積物質ではなく、SF6分解ガスと反応
して呈色変化する物質もしくは試薬等の検知物質を用い
ることもできる。以上のように、この発明によれば、次
のような効果が得られる。Furthermore, instead of the decomposed gas-accumulating substance, a detection substance such as a substance or reagent that changes color upon reaction with the SF6 decomposed gas can also be used. As described above, according to the present invention, the following effects can be obtained.
(1)微小放電、あるいは間欠的な初期放電においても
、検知物質によつて分解ガス(分解生成物)を集積する
ことができるため、高感度の検知が可能である。(1) Even in minute discharges or intermittent initial discharges, decomposition gas (decomposition products) can be accumulated by the detection substance, so highly sensitive detection is possible.
(2)ガス集積物質等の検知物質と共に温度変化により
著しいSF6ガスの吸・脱着作用を行う吸・脱着物質を
配置したので、温度変化によりSF6ガスの流れが生起
される。(2) Since an adsorbing/desorbing substance that significantly adsorbs/desorbs SF6 gas due to temperature changes is arranged together with a detection substance such as a gas accumulating substance, a flow of SF6 gas is generated due to temperature changes.
つまり絶縁媒体の移動に外部からの駆動力を必要としな
いため、検知部を設置したことによる欠点の発生がほと
んどない。(3) 集積物質からのSF6分解ガス成分
(F−イオン)の抽出は純水等て容易とすることが可能
であり、複雑な分析操作を必要としない。In other words, since no external driving force is required to move the insulating medium, there are almost no defects caused by installing the detection section. (3) The SF6 decomposed gas component (F- ion) can be easily extracted from the accumulated material using pure water, etc., and does not require complicated analysis operations.
第1図はこの発明に系る異常検知方式の一実施例の概略
構成図、第2図は検知部の詳細構造図、第3図はSF6
ガス流通管内にSF6分解ガス集積分質を配置した場合
の例を示した詳細構造図である。
1・・・・・金属容器、2・・・・・SF6ガス(絶縁
媒体)、3・・・・・高電圧導体、41,42・・・・
・・管、5・・・・・開閉弁、6・・・・・・検知部、
61・・・・本体容器、62・・・・メクラ蓋、63・
・・・・・バッキング、641,642・・・・・・金
網、65・・・・・・検知物質、66・・・・・吸・脱
着物質。Fig. 1 is a schematic configuration diagram of an embodiment of an abnormality detection method according to the present invention, Fig. 2 is a detailed structural diagram of the detection section, and Fig. 3 is an SF6
FIG. 2 is a detailed structural diagram showing an example of a case where an SF6 decomposed gas accumulation substance is arranged in a gas flow pipe. 1... Metal container, 2... SF6 gas (insulating medium), 3... High voltage conductor, 41, 42...
...Pipe, 5...Opening/closing valve, 6...Detection part,
61... Main container, 62... Blind lid, 63...
... Backing, 641, 642 ... Wire mesh, 65 ... Detection substance, 66 ... Adsorption/desorption substance.
Claims (1)
圧導体を収納した電気機器と、この電気機器に接続され
、該電気機器内に異常放電が発生した際に生する上記媒
体の分解生成物を集積・感知することにより該異常放電
を検知する検知部と、この検知部内または近傍に配置さ
れ、上記分解生成物を集積または感知し、上記異常放電
の存在を検知する検知物質と、この検知物質の近傍に配
置され、温度変化によつて上記絶縁媒体の吸・脱着作用
を行い、該絶縁媒体の流れを生起させ、上記検知物質に
よる検知を高域度に行わせる吸・脱着物質とを備えた電
気機器の異常検知方式。 2 上記検知物質を上記検知部内または上記電気機器と
該検知部との接続部に配置したことを特徴とする特許請
求の範囲第1項記載の電気機器の異常検知方式。 3 検知物質としてシリカゲル系多孔性物質を用いたこ
とを特徴とした特許請求の範囲第1項または第2項記載
の電気機器の異常検知方式。 4 吸・脱着物質として合成ゼオライト、活性炭などの
SF_6ガスを多量に吸着する物質とを用いたことを特
徴とする特許請求の範囲第1項記載の電気機器の異常検
知方式。[Scope of Claims] 1. Electrical equipment in which a high voltage conductor is housed in an interior filled with an insulating medium such as SF_6 gas, and the above-mentioned electrical equipment that is connected to this electrical equipment and occurs when abnormal discharge occurs in the electrical equipment. a detection unit that detects the abnormal discharge by accumulating and sensing decomposition products of the medium; and a detection unit that is disposed within or near the detection unit and that accumulates or senses the decomposition products and detects the presence of the abnormal discharge. A substance and an absorbent disposed near the sensing substance, which adsorbs and desorbs the insulating medium according to temperature changes, causes a flow of the insulating medium, and allows the sensing substance to perform detection in a high range.・Anomaly detection method for electrical equipment equipped with desorbable substances. 2. An abnormality detection method for an electrical device according to claim 1, characterized in that the detection substance is disposed within the detection section or at a connection between the electrical device and the detection section. 3. An abnormality detection system for electrical equipment according to claim 1 or 2, characterized in that a silica gel-based porous substance is used as the detection substance. 4. An abnormality detection system for electrical equipment according to claim 1, characterized in that a substance that adsorbs a large amount of SF_6 gas, such as synthetic zeolite or activated carbon, is used as the adsorption/desorption substance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53090686A JPS6056365B2 (en) | 1978-07-24 | 1978-07-24 | Abnormality detection method for electrical equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53090686A JPS6056365B2 (en) | 1978-07-24 | 1978-07-24 | Abnormality detection method for electrical equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5517288A JPS5517288A (en) | 1980-02-06 |
JPS6056365B2 true JPS6056365B2 (en) | 1985-12-10 |
Family
ID=14005410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53090686A Expired JPS6056365B2 (en) | 1978-07-24 | 1978-07-24 | Abnormality detection method for electrical equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6056365B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60221612A (en) * | 1984-04-16 | 1985-11-06 | Misao Shoji | Incinerator of rotary drum type |
JP4596531B2 (en) * | 2005-03-11 | 2010-12-08 | 財団法人電力中央研究所 | Gas insulated power equipment and abnormality detection method thereof |
JP2008067536A (en) * | 2006-09-08 | 2008-03-21 | Central Res Inst Of Electric Power Ind | Gas insulated power apparatus and abnormality detection method therefor |
JP4801541B2 (en) * | 2006-09-08 | 2011-10-26 | 財団法人電力中央研究所 | Gas insulated power equipment |
JP2010206962A (en) * | 2009-03-04 | 2010-09-16 | Central Res Inst Of Electric Power Ind | Method of detecting abnormal conditions in gas-insulated power apparatus |
JP2010206963A (en) * | 2009-03-04 | 2010-09-16 | Central Res Inst Of Electric Power Ind | Method of detecting abnormal conditions in gas-insulated power apparatus |
-
1978
- 1978-07-24 JP JP53090686A patent/JPS6056365B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5517288A (en) | 1980-02-06 |
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