KR20020000405A - gas extraction apparatus in transformer insulation oil - Google Patents
gas extraction apparatus in transformer insulation oil Download PDFInfo
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- KR20020000405A KR20020000405A KR1020000035134A KR20000035134A KR20020000405A KR 20020000405 A KR20020000405 A KR 20020000405A KR 1020000035134 A KR1020000035134 A KR 1020000035134A KR 20000035134 A KR20000035134 A KR 20000035134A KR 20020000405 A KR20020000405 A KR 20020000405A
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- vacuum
- gas
- insulating oil
- extracting
- mercury
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- 238000000605 extraction Methods 0.000 title claims description 33
- 238000009413 insulation Methods 0.000 title 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- -1 acryl Chemical group 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- KYKQHSMYWLWROM-UHFFFAOYSA-N ac1l4yjn Chemical compound [Hg].[Hg] KYKQHSMYWLWROM-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/2841—Gas in oils, e.g. hydrogen in insulating oils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Power Engineering (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
본 발명은 변압기 절연유에서의 가스 추출장치에 관한 것으로, 보다 상세하게는 운전중인 유입변압기, 유입리엑터등 유입 전기기기의 내부 이상유무를 알기 위하여 절연유중에 존재하는 가스를 가스 분석기로 분석하기전 그 분석에 필요한 유중 가스를 추출하도록 한 가스 추출장치에 관한 것이다.The present invention relates to a gas extraction apparatus from a transformer insulating oil, and more specifically, to analyze the gas present in the insulating oil to analyze the gas in the insulating oil in order to know whether there is an internal abnormality of the inflow electrical equipment, such as the operating inlet transformer, inlet reactor. The present invention relates to a gas extraction apparatus for extracting gas in oil required for a fuel cell.
유입 전기기기의 절연유를 채유한 후 그 절연유중의 가스를 추출하기 위해서는 여러 방법이 있는데, 그 중 도 1에 도시된 바와 같이 toepler pump 방식은 진공장치 및 수은주를 사용 추출부와 포집부의 압력을 낮추면 포화 용해도가 저하되는 원리를 이용하여 절연유중의 용존가스를 기상으로 추출한다.There are several methods for extracting the gas in the insulating oil after insulated oil of the inflow electric machine. Among them, as shown in FIG. 1, the toepler pump method uses a vacuum device and a mercury bottle to reduce the pressure of the extracting part and the collecting part. The dissolved gas in the insulating oil is extracted into the gas phase using the principle that the saturation solubility is lowered.
그러나, 추출부와 포집부가 하나의 바디(body)로 되어 있고 추출부의 진공은 단순히 수은의 강제 강하에 의한 진공이므로 진공도가 떨어지며 추출효율이 저조하여 가스분석 데이타의 정확도 및 재현성에 영향이 심하여 운전자 마다의 특성에 의해 데이타가 일정하지 않는 문제점이 있었다.However, since the extraction part and the collecting part are one body, and the vacuum of the extraction part is simply a vacuum due to the forced drop of mercury, the degree of vacuum drops and the extraction efficiency is low, which affects the accuracy and reproducibility of gas analysis data. There is a problem that the data is not constant due to the characteristics of the.
또한, 절연유를 추출부에 주입할때 절연유가 수은과 섞여지므로 가스 추출 후 배유시 다량의 절연유와 함께 문제가 발생하고 있으며, 이 장치는 수입에 의존하므로 파손에 따른 신속한 대처가 불가하다.In addition, since the insulating oil is mixed with mercury when the insulating oil is injected into the extraction unit, a problem occurs along with a large amount of insulating oil when the oil is extracted after gas extraction.
따라서, 본 발명은 상기한 바와 같은 문제점을 감안하여 이루어진 것으로,유중 가스의 추출 효율을 증대시키고 배절연유중에 수은이 원천적으로 함유되지 않도록 하며, 전량 수입에 의존하던 것을 국산화하므로써 수급이 원활하고 설비 관리업무의 질적 향상으로 전력 계통의 안정화를 기하도록 하는데 그 목적이 있다.Accordingly, the present invention has been made in view of the above-mentioned problems, and the supply efficiency is smooth and facility management by increasing the extraction efficiency of gas in oil, avoiding the source of mercury in the insulated oil, and localizing the total dependence on imports. The purpose is to stabilize the power system by improving the quality of work.
도 1은 종래의 가스 추출 장치의 구성도.1 is a block diagram of a conventional gas extraction device.
도 2는 본 발명에 적용되는 가스 추출 장치의 구성도.2 is a block diagram of a gas extraction apparatus applied to the present invention.
도 3은 본 발명에 적용되는 가스 추출 장치의 부품 배치도.3 is a component layout view of a gas extraction apparatus applied to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
1 : 추출부 2 : 포집부 3 : 진공펌프1: Extraction unit 2: Collecting unit 3: Vacuum pump
4 : 진공게이지 5 : 그라스 필터 6 : 사이트관4: vacuum gauge 5: glass filter 6: site tube
7 : 원통형 스틸관 8 : 진공용 볼 밸브7: cylindrical steel tube 8: vacuum ball valve
9 : inlet 밸브 10 : 포집부 밸브9: inlet valve 10: collector valve
a : 수은회수부 b : 밸브(대기개방)a: mercury recovery unit b: valve (open air)
b' : 밸브(진공방향) c : buretteb ': Valve (vacuum direction) c: burette
d : 밸브(burette 하부) e : 측정밸브d: Valve (lower burette) e: Measuring valve
f : 레퍼런스 컬럼 g : 제어밸브(에어 인 방향)f: Reference column g: Control valve (air in direction)
g' : 제어밸브(진공방향) h : 압력조절기g ': Control valve (vacuum direction) h: Pressure regulator
i : 제어밸브(수은주 높이조정) i' : 제어밸브(수은보충)i: Control valve (mercury height adjustment) i ': Control valve (mercury supplement)
j : 가스 inlet 밸브j: gas inlet valve
이하, 첨부도면을 참조하여 본 발명에 따른 바람직한 실시 예에 대하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 바람직한 가스 추출장치의 일실시예는,One embodiment of the preferred gas extraction apparatus of the present invention,
추출부(1) 및 포집부(2)의 진공도 향상을 위하여 수은 강하에 의한 간접 진공에서 진공펌프(3)에 의한 직접 진공이 되도록 라인을 구성하고, 진공상태의 상시 확인이 가능하도록 진공 게이지(4)를 설치하며, 상기 추출부(1) 내에는 절연유의 표면적이 극대화되어 용존가스가 최대한 추출될 수 있도록 그라스(glass) 필터(5)를 취부하고, 상기 추출부(1) 내의 절연유 상태를 감시할 수 있도록 투명 원통형 아크릴로 된 사이트(sight)관(6)과 상기 사이트관(6)을 보호하기 위한 원통형 스틸(steel)관(7)을 설치하며, 장치내의 원활한 진공의 유지,차단을 위하여 진공용 볼(ball) 밸브(8)를 설치하여 구성함이 바람직하다.In order to improve the degree of vacuum of the extraction unit 1 and the collecting unit 2, a line is configured to be a direct vacuum by the vacuum pump 3 in an indirect vacuum due to a drop in mercury, and a vacuum gauge (A) 4), a glass filter (5) is mounted in the extracting unit (1) to maximize the surface area of the insulating oil so that dissolved gas can be extracted as much as possible, and the state of the insulating oil in the extracting unit (1) Sight tube (6) made of transparent cylindrical acrylic and cylindrical steel tube (7) for protecting the site tube (6) are installed for monitoring, and smooth vacuum is maintained in the device. In order to achieve this, it is preferable to provide a vacuum ball valve 8.
도 2는 본 발명에 적용되는 가스 추출 장치의 구성도이고, 도 3은 본 발명에 적용되는 가스 추출 장치의 부품 배치도로서, 이를 참조하여 설명하면 다음과 같다.FIG. 2 is a configuration diagram of a gas extraction apparatus applied to the present invention, and FIG. 3 is a layout view of components of the gas extraction apparatus applied to the present invention.
유입변압기 및 유입리엑터(reactor)등 절연유가 들어있는 전기기기는 기기 내부의 절연유 속에 녹아있는 가스를 추출한 후 가스 분석기로 분석하면 가스량,분포 등을 알 수 있으며, 이러한 것을 통하여 현재 운전중인 전기기기의 이상유무 및 이상의 진행상황을 추정할 수 있는데, 이 가스분석은 전기기기 운전중 소량의 시료채취 및 간단한 전처리(가스추출)로서 정확한 분석이 가능하므로 전기설비의 돌발 고장을 억제할 수 있다. 상기 가스 분석기를 이용하여 변압기 절연유중의 가스를 분석하기 위한 가스 추출장치를 사용한다.Electrical equipment containing insulating oil, such as inlet transformer and inlet reactor, can extract gas dissolved in the insulating oil inside the device and analyze it with a gas analyzer to find out the amount of gas and distribution. It is possible to estimate the presence of abnormality and the progress of the abnormality, and this gas analysis can suppress the breakdown failure of the electrical equipment because accurate analysis can be performed with a small amount of sampling and simple pretreatment (gas extraction) during operation of the electric equipment. A gas extraction apparatus is used to analyze the gas in the transformer insulating oil using the gas analyzer.
추출부(1)와 포집부(2)의 역할을 각각 수행할 수 있도록 별도의 추출장치 및 포집부를 제작하여 취부하는 것으로 하며, 상기 추출부(1) 및 포집부(2)의 진공도 향상을 위하여 수은 강하에 의한 간접 진공에서 진공펌프(3)에 의한 직접 진공이 되도록 라인 구성을 하며 진공상태의 상시 확인이 가능하도록 진공 게이지(gauge)(4)를 설치한다.In order to perform the role of the extraction unit 1 and the collecting unit 2, the separate extraction apparatus and collecting unit to be produced and mounted, in order to improve the vacuum degree of the extraction unit 1 and the collecting unit (2) A vacuum gauge 4 is installed so that the vacuum can be checked indirectly by the vacuum pump 3 in an indirect vacuum due to the drop of mercury.
상기 추출부(1) 내에는 절연유의 표면적이 극대화되어 용존가스가 최대한 추출될 수 있도록 그라스(glass) 필터(5)를 취부하며, 상기 추출부(1) 내의 절연유 상태를 감시할 수 있도록 투명 원통형 아크릴로 된 사이트(sight)관(6)과 이를 보호하기 위한 원통형 스틸(steel)관(7)으로 구성되어 있다.In the extracting section 1, a glass filter 5 is mounted to maximize the surface area of the insulating oil so that the dissolved gas can be extracted as much as possible, and a transparent cylindrical shape for monitoring the state of the insulating oil in the extracting section 1. It consists of a sight tube 6 of acrylic and a cylindrical steel tube 7 for protecting it.
장치내의 원활한 진공의 유지,차단을 위하여 진공용 볼(ball) 밸브(8)를 상요하며 기타 부품 또한 진공 전용의 것을 사용한다.A vacuum ball valve 8 is required to maintain and shut off smooth vacuum in the apparatus, and other components are also used exclusively for vacuum.
도 2에 도시된 바와 같이 절연유중의 가스 추출에 있어서, 진공펌프(3)에 의해 진공되어 있는 추출장치(진공상태 확인은 진공 게이지(4)로 함)에 시료인 절연유가 든 sylinge를 장착한 후 inlet 밸브(9)를 배유 방향으로 하여 약간 드레인 시키면 sylinge와 밸브 사이의 에어가 배출되고 절연유로 메워진다.As shown in Fig. 2, in the extraction of the gas in the insulating oil, a sylinge with insulating oil, which is a sample, is mounted on an extraction device vacuumed by the vacuum pump 3 (the vacuum state is checked by the vacuum gauge 4). After the inlet valve 9 is drained slightly in the oil drainage direction, air between the sylinge and the valve is discharged and filled with insulating oil.
추출장치의 진공상태를 다시 확인한 후 적당하면 추출장치를 진공펌프 및 진공 게이지로부터 차단하고, sylinge의 로크(lock)를 해제한 후 inlet 밸브(9)를 추출기 쪽으로 전환하면 절연유가 진공의 힘으로 추출기 내부로 빨려 들어간다.After checking the vacuum condition of the extractor again, if appropriate, shut off the extractor from the vacuum pump and the vacuum gauge, release the sylinge lock, and then switch the inlet valve 9 to the extractor. Sucked into the interior.
이때 절연유가 추출기 내부의 필터를 거치는 동안 절연유의 표면적이 커지면서 유중의 가스가 추출되며, sylinge 내의 절연유가 완전히 주입되면 추출기의 inlet 밸브(9)를 클로즈한다.At this time, while the insulating oil passes through the filter inside the extractor, the surface area of the insulating oil increases and the gas in the oil is extracted. When the insulating oil in the sylinge is completely injected, the inlet valve 9 of the extractor is closed.
추출가스의 포집에 있어서, 추출된 가스를 포집부로 보내기 위하여 포집부의 밸브(10)를 오픈하여 추출가스를 포집부로 확산시킨후 클로즈하며, 포집부의 수은회수부(mercury reservoir)(a) 용기를 대기로 개방(밸브측 에어측(b))하면 포집부 내로 수은이 올라간다.이때 포집부 내의 추출가스가 포집부를 거쳐 burette(c)에 모이며, 수은의 상승이 멈추면 burette 하부의 밸브(d)를 잠근다.In collecting the extracted gas, in order to send the extracted gas to the collecting part, the valve 10 of the collecting part is opened, the extracting gas is diffused into the collecting part, and then closed, and the mercury reservoir (a) container of the collecting part is held in the atmosphere. When the furnace is opened (valve side air side (b)), mercury rises into the collecting section. At this time, the extraction gas in the collecting section collects in the burette (c) through the collecting section. Lock it.
포집 가스량 측정에 있어서, 측정 밸브(e)를 오픈한 후 burette(c) 내의 수은과 reference column(f) 내의 수은 변화를 비교하여 burette(c) 내의 수은이 높으면 제어밸브를 에어 인(in) 방향으로 한번 전환했다가 잠근후(즉, 압력조절부(h) 내의 압력을 높여 reference column(h) 내로 수은을 올리기 위함) 제어 밸브(i)를 오픈하여 압력조절부(h) 내의 수은을 reference column(h) 내로 올려 burette(c)의 수은과 높이를 맞춘다(즉, burette(c)를 대기압과 동일하게 하기 위함).In the collection gas measurement, after the measurement valve (e) is opened, the mercury in the burette (c) and the mercury change in the reference column (f) are compared, and if the mercury in the burette (c) is high, the control valve is directed in the air in direction. Switch to and then lock (ie to raise the pressure in the pressure regulator (h) to raise the mercury into the reference column (h)) by opening the control valve (i) to return the mercury in the pressure regulator (h) to the reference column. (h) Raise into mercury in burette (c) with height (ie to equal burette (c) with atmospheric pressure).
이때 압력조절부(h) 내의 수은의 양이 충분하지 않을 경우 제어 밸브(i)를 vaccum 방향으로 한번 전환했다가 잠근후(즉, 압력조절부(h) 내의 압력을 높여 reference column(c) 내로 수은을 올리기 위함) 제어 밸브(i)를 오픈하여reference column(c) 내의 수은을 압력조절부(h) 내로 회수하여 burette(c) 내의 수은과 높이를 맞춘다(즉, burette(c) 내를 대기압과 동일하게 하기 위함).At this time, if the amount of mercury in the pressure regulator h is not sufficient, the control valve i is once switched to the vaccum direction and then shut off (that is, the pressure in the pressure regulator h is increased to the reference column c). To raise the mercury) Open the control valve (i) to recover the mercury in the reference column (c) into the pressure regulator (h) to match the mercury in the burette (c) (ie atmospheric pressure in the burette (c)). To be the same).
이와같이 하여 reference column(c)과 burette(c) 내의 수은주의 높이가 일정하면 burette(c)의 수은주 눈금을 추출 가스량으로 읽고 기록한다.In this way, if the height of the mercury in the reference column (c) and burette (c) is constant, the mercury scale of the burette (c) is read and recorded as the amount of extraction gas.
추출가스 주입에 있어서, 가스 분석기로 추출가스를 보내기 위하여 가스 inlet 밸브(j)를 오픈하면 burette(c) 내의 수은주가 올라간다(분석기 내의 샘플 루프가 진공되어 있기 때문).In injection gas injection, opening the gas inlet valve (j) to send the extraction gas to the gas analyzer raises the mercury in the burette (c) (because the sample loop in the analyzer is evacuated).
다시 상기 포집 가스량 측정에서 burettez(c) 내의 수은과 reference column(f) 내의 수은주 높이를 맞추는 동일한 방법으로 reference column(f)과 burette(c) 내의 수은주 높이를 동일하게 한 다음(즉, 분석기 내의 샘플 루프를 대기압으로 조정하여 분석하기 위함) 가스 inlet 밸브(j)를 클로즈한 후, 가스분석기를 스타트시킨다.Again, in the collection gas measurement, the mercury column in the reference column (f) and burette (c) is equalized (i.e., the sample in the analyzer) in the same way that the mercury level in the burettez (c) and the mercury column in the reference column (f) are matched. Close the gas inlet valve (j) and start the gas analyzer.
절연유의 배출 및 다음 시료 추출 준비에 있어서, sylinge를 제거한 후 inlet 밸브(9)를 추출기 쪽으로 전환하여 추출부 내에 에어를 유입시킨 다음 배유 밸브를 오픈하여 절연유를 드레인(drane)시킨다.In discharging the insulating oil and preparing for the next sampling, after removing the sylinge, the inlet valve 9 is turned to the extractor to introduce air into the extracting part, and then the drain valve is opened to drain the insulating oil.
상기 절연유가 드레인된 것을 확인한 후 inlet 밸브(9) 및 배유 밸브를 클로즈하며, 추출장치의 vaccum 밸브(8)를 오픈하여 추출장치 내를 먼저 진공시키고, 진공이 적당하면 포집부의 수은회수부(a) 용기 내를 진공으로(밸브 vaccum측(b))하여 포집부 내의 수은을 수은 회수부(a) 용기 내로 내린다.After confirming that the insulating oil is drained, close the inlet valve 9 and the oil drain valve, open the vaccum valve 8 of the extraction device to vacuum the inside of the extraction device, and if the vacuum is appropriate, the mercury recovery part of the collecting part (a ) The inside of the container is evacuated (valve vaccum side (b)) to lower the mercury in the collection into the mercury recovery unit (a).
동시에 burette 하부의 밸브(d)를 오픈하여 burette 내의 수은도수은회수부(a) 용기내로 회수한 후 가스 inlet 밸브(j)를 오픈하면 추출장치 전체가 다음 시료추출 준비가 완료된다.At the same time, the valve d under the burette is opened, the mercury mercury recovery part (a) in the burette is recovered into the vessel, and the gas inlet valve (j) is opened.
이상에서 설명한 바와 같이 본 발명에 의하면, 고진공에 의한 가스 추출 효율향상과 포집부와 추출부의 완전한 분리로 가스 추출후 절연유 배유시 수은의 함율르 원천적으로 방지할 수 있으며, 진공 펌프를 이용하여 항상 일정한 진공상태에서 가스 추출을 하므로써 데이타의 신뢰도가 향상되고, 사용중 파손시 수입에 의존하여 구입설치 기간이 길었으나 이를 국산화하므로써 수급을 원활하게 할 수 있다As described above, according to the present invention, by improving the gas extraction efficiency by high vacuum and the complete separation of the collecting and extracting portions, mercury content can be prevented at the source when discharging the insulating oil after gas extraction. By extracting the gas under vacuum, the reliability of data is improved, and the purchase and installation period is long depending on the import in case of damage during use, but it can be smoothly supplied by localization.
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| KR10-2000-0035134A KR100485519B1 (en) | 2000-06-24 | 2000-06-24 | gas extraction apparatus in transformer insulation oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100951247B1 (en) * | 2002-12-10 | 2010-04-05 | 주식회사 포스코 | An apparatus for discharging the noxiousness gas in a transformer |
| CN110736640A (en) * | 2019-09-10 | 2020-01-31 | 内蒙古电力（集团）有限责任公司薛家湾供电局 | Oil storage monitoring device and monitoring method |
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| JPS62100668A (en) * | 1985-10-28 | 1987-05-11 | Mitsubishi Electric Corp | Internal diagnosis of oil-filled electric equipment |
| KR0172400B1 (en) * | 1995-08-03 | 1999-03-30 | 김광호 | Frequency detection circuit |
| KR100308877B1 (en) * | 1999-02-10 | 2001-09-26 | 이종훈 | Apparatus for Extraction Gas Collection Using Plunger |
| KR100339040B1 (en) * | 1999-08-27 | 2002-05-31 | 윤행순 | Apparatus for Determination of Dissolved Gases in Oil Filled Transformer Using the Upper Space of the Cube and Method Thereof |
| KR100342421B1 (en) * | 2000-03-03 | 2002-07-04 | 윤행순 | Device for monitoring fault of transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100951247B1 (en) * | 2002-12-10 | 2010-04-05 | 주식회사 포스코 | An apparatus for discharging the noxiousness gas in a transformer |
| CN110736640A (en) * | 2019-09-10 | 2020-01-31 | 内蒙古电力（集团）有限责任公司薛家湾供电局 | Oil storage monitoring device and monitoring method |
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