Oil Purification Plants REOIL Regeneration Systems
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Index History... 3
Oil Purification Plant. 6
Substantial Plant Characteristics... 7
Supplements. 8
Type Outline and Selection Assistance. 9
Measuring Equipment10
REOIL Regeneration Systems.. 11
Oil Regeneration Unit Type, CRP3000 17
Measuring Device Type TranSCoM X319
Gas Content Measuring Unit VZ-212 A.. 23
Electric Resistivity on Oil Samples Measuring Unit VZ220A25
Moisture and Temperature Measuring Unit VZ230. 28
Hot Oil Spray Plant Type HOS.. 30
Reference List.. 31
Micafluid AG Oil Purification System Sdstrasse 1 CH-8952 Schlieren
Tel: +41 (0)44 739 44 66 Fax: +41 (0)44 739 44 68 E-Mail [email protected] Web www.micafluid.ch
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HISTORY Insulation oil purification and drying
plants for transformers
In the course of restructuration of the vacuum plants division of ABB Switzerland AG, Micafil, the newly formed company Micafluid AG took over the entire product line of oil purification plants in 2006 under a mutual agreement. Since all rights and technology were transferred as well, Micafluid was able to profit from a development and research back-ground of 95 years, on which Micafil had based their strong reputation.
FirstMicafil-oil purification plant 1913 A mobile oil purification plant leaving Micafil works around 1930
Today Micafluid AG stands in close cooperation with transformer manufacturers, power producers and distributors as well as with field servicing companies in order to develop new innovative solutions and technologies for the treatment of insulating fluids. As a recent example the combination of totally new measuring systems (TranSCoM X3) with advanced oil purification and drying technologies resulted from such cooperation.
Micafluid oil purification, regeneration and drying systems for transform-ers are designed for practical use in the field and in the shop, in which aspects of quality, economy and safety towards the environment have been taken into consideration. We have further several projects running for the complete automation of the oil purification on various transform-ers in distribution substations. Micafluid is working on projects for purifi-cation of related liquids, e.g. purification of old used oil, nutritional oil, thermal oil and other media. Yet, we expect the treatment and drying of transformer oil and other insulating liquids to remain our prime business.
Mobile Micafluidanlage bei AKW Temelin
In order to provide for a long-term operational safety on power transformers, it will be of decisive importance to maintain the humidity content of the oil and the entire dielectric system as low as this is possible and economically justifiable. Worldwide investigations lead to conclusions that a higher percentage of the investigated power transformers operate with increased moisture content in the oil in the solid insulation. Depending on the total quantity of insulating materials, the operating tem-perature, service intervals, size, voltage rating and age of the transformer as well as the measured moisture content, users and service organisations must decide on the most appropriate technological approach for servicing the unit. Factors that in the end will influence any decision, such as available capital investment, drying efficiency of a system, required operating personnel, operating and maintenance costs, must carefully be taken into consideration before deciding on the appropriate purification and drying technology.
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The insulation of high voltage installations, very specifically of transformers, mainly consists of a paper/oil dielectric system. In order to provide for a long operational lifetime of these insulating media, these high voltage units are filled with purified oil and this oil will be treated in periodical intervals.
Purification and regeneration will increase the dielectric strength of the oil and the ageing process of the paper/oil system will be slowed down. Micafluid AG as experts in purification and regeneration of insulating fluids offer perfect solutions for a professional treatment of
The oil regeneration plant models REOIL combine the purification technology of the VOP plants with the Adsorption-regeneration technology, in which acidous and other ageing prod-ucts are adsorbed while streaming through Fullers earth columns. On top, the Micafluid RE-OIL plants are capable of automatically regenerate the saturated Fullers earth.
Both product lines (VOP and REOIL) are fully-automatically controlled and thus being able to work off-line (transformer not energized) as well as on-line (with the transformer being energized). Out of a total of well over 180 standard type oil purification plants that Micafluid has sold since taking over this product line, there are more than 30 on-line plants in service in countries all over the world.
VKW on-line-purification plant servicing an energized 145MVA
Power transformers are very important and expensive components in the chain of electrical power supply. They represent a high investment value.
In the wake of the liberalisation and deregulation of the European electrical power market, efficiency and safety in generation, transmission and distribution of electri-cal energy have gained utmost importance. In order to avoid severe supply short-ages through equipment failure, maintenance and servicing of transformers be-came a prime factor for securing a perfect and continuing power supply.
Line of Micafluid oil purifica on plants comprising models:
VOP10 3001000lt/h VOP120 400012000lt/h
VOP30 10003000lt/h VOP160 600016000lt/h
VOP60 20006000lt/h VOP200 800020000lt/h
VOP90 30009000lt/h VOP300 1000030000lt/h
Regenerieranlagen REOIL50009/REOIL500012
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Process Description Standard plants for the treatment of insulating oils, oil filling and drying electrical equipment, such as transfor-mers and switchgears. The oil to be treated is fed into the VOP plant by means of differential pressure. Through the electrical heater the oil is heated to the pre-selected temperature and direc-ted into the degassing phase. An automatic level control guarantees, at pre-selected flow-through, an optimised degassing of the insulating oils. By means of a frequency controlled feeding pump, the dewatered and degassed oil is transferred back into the transfomer through the fine filter column. Technical Characteristics Singlre stage, air-cooled vacuum system Variable flow-through according to type, from 100 lt/h to 20000 lt/h Anti-Froth Control system in the degassing tank
(AFC-System) Automatic overflow safety device Variable degassing values PID-regulated Thyristor heating system Variable fine filter inserts Automatic indication for filter changes PLC controlled system Modular build-up Short delivery times
Special Application In order to control the increased froth behaviour of the treated insulating oil, an automatic froth sur-veillance system is installed into the new degassing tank. During the treatment phase a special automa-tic process prevents an overflooding of vaccum pumps with insulating oil. All Micafluid Oil Purification Plants are designed for online treatment on energized transformer. Additio-nal safety aquipments (Z?) are needed. General Characteristics Higher degassing and dewatering efficiency factor at a protective treating process. After treatment, the oil characteristics are vastly kept (light fractions, as well as chemical basis from the oil are not evacuated). The VOP plant is modular build-up and can be tech-nologically expanded, at any time, without additional modifications.
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Oil Heating The oil to be treated is heated by means of an electricalli heated, PID controlled oil heater, which is brought to the required treating temperature. The heating ele-ments are place into welded-in protection tubes, separated from the oil. The horizon-tal position and generously dimensioned heating surface allow a careful heating-up of the oil.
Online Oil Measuring A new measuring instrument for the determination of the oil quality at the in/outlet of the plant guarantees an optimal treating duration. Data is conti-nuously registered on a 6-channel recorder.
Degassing System The degassing system has been optimised and expanded with an au-tomatic froth control. New is also the automatic level control, dependent on the adjusted flow-through rate. Excellent degassing values and su-perior oil quality are guaranteed.
Filtration A built-in pre-filter at the inlet of
the VOP plant prtects the plant against coarse contamination
Fine filter cartridges with auto-matic control of dirtyness
The filter elements are made of special synthetic material and are non-hygroscope
Oil Feeding Converying of oil in the degassing pha-se is carried out by means of differenti-al pressure. A frequency controlled feeding pump allows for variable oil flow-throughs. A specially developed automatic screen guarantees an even oil flow-through in the degassing pha-se. A photo electronical level sur-veillance contros the maximum admis-sible oil level in the degassing tank.
Vaccum Plant For the evacuation of gasses, deve-loped in the degassing tank, only rotary slide vane vacuum pumps are now used. To achieve lower guarantee values only the suction capacity of the vacuum pump is increased.
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A large selection of supplements can be ordered together with the VOP plant. Supplements ordered at a later stage can be easily installed into the plant without refitting.
Special Plants Regeneration / Fuller plants Cable oil treatmen
