The faraday effect states that the rotation of the plane of polarization of a beam of light which passes read more optical current transformers. Also explore the seminar topics paper on magneto optical current transformer technology moct with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or. Magnetooptical current transformer technology moct. The seminar topic is based on magneto optical current transformer presented byaishwarya verma0902011.
The principles of measuring currents in highvoltage lines by magnetooptical means are described. Apr 09, 2020 the expresswire request now final report will add the analysis of the impact of covid19 on this industry. The principles of optical and optical fiber current sensor technology have been known for. During the forecast period, north america will be closely followed by asia pacific in terms of expected demand. Magneto optic current transformer eliminates many of the drawbacks of the conventional current transformers. This feature, as well as its immunity to electric and magnetic fields, makes. The principles of optical and optical fiber current sensor technology have been known. Performance of magnetooptical glass in optical current. Magneto optic current transformer, ask latest information, magneto optic current transformer abstract, magneto optic current transformer report, magneto optic current transformer presentation pdf,doc,ppt, magneto optic current transformer technology discussion, magneto optic current transformer paper presentation details, magneto optic current transformer, ppt, pdf, report, presentation, source. New electric current sensor by thermal lens coupled magneto.
Also explore the seminar topics paper on magnetooptical current transformer technology moct with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics. This magneto optic current transformer is widely used in power systems and substations nowadays. Moctmagneto optic current transformer free download as powerpoint presentation. Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic field when the.
Principles of magnetooptic imaging and its applications. Nov 17, 20 conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. The physical origin of the magnetooptical effects is phenomenologically discussed. The moct system is suitable for outdoor application and has an accurate metering current range from less than 5 a to 3150 a using the same sensor. Magnetooptical current transformermoct seminar report. In a conventional current transformer, there is a chance of saturation of magnetic field under high current, complicated insulation and cooling structure, a chance of. In contrast, the principle of operation of the new sensor is based on the direct registration of the domain wall dw positions in an orthoferrite plate. It has been widely used in detecting surface and subsurface cracks and corrosion in aircraft skins for nondestructive testing purpose.
By using a singleended optical fiber around the current conductor that utilizes the magnetooptic effect faraday effect, focs measures uni or bidirectional dc currents of up to 600 ka within 0. Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic field when the light propagated in a piece of glass, and the rotation angle was proportional to the intensity of the magnetic field. Conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Both these market are expected to witness rich growth in the optical current transformer market, owing to the increasing demand of optical current transformer in these regions. Magneto optic current transformer technology moct by.
Magneto optic current transformer, ask latest information, magneto optic current transformer abstract,magneto optic current transformer report,magneto optic current transformer presentation pdf,doc,ppt,magneto optic current transformer technology discussion,magneto optic current transformer paper presentation details,magneto optic current transformer, ppt, pdf, report, presentation, source. The magneto optic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. An accurate electric current transducer is a key component of any power system instrumentation. The iccs consists of an inductive current transformer having a primary winding, a small core and a minimizedloss secondary winding. The magnetooptic spatial light modulator moslm, commercially available through semetex corporation, has successfully been integrated into a variety of optical signal processing, optical pattern recognition, and optical computing applications. A current measurement technique using the magneto optic or faraday effect, has been developed, tested, and demonstrated. Fiber optic current sensors and optical current transformers. To suppress the effect of the linear birefringence in optical fiber sensor on measurement. Based on the faraday effect, magnetooptical current transformers mocts provide numerous advantages as compared with conventional measuring transformers. For dc current measurement, we have developed optical current transformer oct based on faraday effect using reflection sagnac interferometer and performed the field test in hokkaidohonshu hvdc. The magneto optic current transformer moct measures the rotation angle caused by the magnetic field and converts it into a signal of few volts proportional to the electric currant. Magnetooptical current transformer technology moct seminar. In the majority of magneto optical current transformers developed to date, the main parameter is the angle of light polarization faraday rotation.
Magneto optic current transformer market global industry. Optical current transformers based on optical fibre sensors are now. The response of optical current transformer is the response ability of magnetic field of optical current transformer. In the following, we will consider optical current and voltage sensors that have been developed at abb and examples of their applications. New electric current sensor by thermal lens coupled. Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Magneto optic current transformer market 2020 by technology. In order to measure the electric current, power stations and substations make use of the current transformers that are of inductive type having windings and core. Magnetooptical recording june 27, 2014 43 the university of alabama. The research activities on the phenomenon of magnetooptic effects has recently promulgated due to its versatile use in magnetooptic recordings for high density magnetic data storage, magnetic field sensors and its applications in magnetoelectronics. This magneto optical current transducer eliminates many of the. Optical current transformer market global industry. It consist of a sensor head located near the current carrying conductor, an electronic signal processing unit and.
Pdf optical current transducers octs have clear advantages over. Effects in an optical medium that are dependent on the direction of light propagation. It consist of a sensor head located near the current carrying conductor, an electronic signal processing unit and fiber optical cables linking to these two parts. Basis for moctinteraction between the magnetic field of the primary conductor and the optical activity of glass material magneto optical current.
Based on fiber technology and a new physical effect reported, the. A magnetooptical drive is a kind of optical disc drive capable of writing and rewriting data upon a magnetooptical disc. Current transformer the mostused device for measurements of alternating currents in electrical high and mediumvoltage networks is the ct current transformer. Particular attention is payed to using an optical fiber both as a transmission line and a measuring sensor. Current transformer power system analysis free lecture pdf download resistance and leakage reactance of transformer or impedance of transformer power system analysis free lecture notes download theory of transformer on load, with resistance and leakage reactance in transformer power system analysis free pdf download. Also get the seminar topic paper on magnetooptical current transformer technology moct with abstract or synopsis, documentation on advantages and disadvantages, presentation slides for ieee final year electronics and telecommunication engineering or ece students for.
The measurements are contactless and the measured signal is transmitted by a light beam propagating in air or in optical fibers. Conventional current transformers becomes more and more bulky and costly. Get magnetooptical current transformer technology moct seminar report and ppt in pdf and doc. It uses the rotation of the plane of polarization by a magnetic field exhibited in certain glasses faraday effect.
A current measurement technique using the magnetooptic or faraday effect, has been developed, tested, and demonstrated. Magnetooptical current transformer of high bandwidth and. Magneto optic current transformer technology moct analyzer is that photo detectors can only detect the intensity of light, rather than the orientation of polarizations. Pdf magneto optic current transformer technology moct. Explore magnetooptical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. Optical current transformer oct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. Sep 11, 2016 the iccs consists of an inductive current transformer having a primary winding, a small core and a minimizedloss secondary winding. In 1983, just a year after the introduction of the compact disc, kees schouhamer immink and joseph braat presented the first experiments with erasable magnetooptical compact discs during the 73rd.
The device developed is a magneto optic current transducer moct. February 7th, 2017 by afsal meerankutty 1 comment an accurate current transducer is a key component of any power system instrumentation. May 05, 2015 optical current transformers are current sensors which work on the magnetooptic effect. With increasing drawbacks of conventional current transformers such as saturation of magnetic field under high current, electromagnetic interference and complicated insulation and cooling structures are driving the demand for advanced electrical equipment, for instance, magneto optic current transformer. A fiberoptic current sensor focs is a current sensor for measuring direct current. Magneto optic current transducer consist of a sensor head located near the current carrying conductor, an electronic signal processing unit and fiber optical cables linking to these two parts. With increasing drawbacks of conventional current transformers such as saturation of magnetic field under high current, electromagnetic interference and complicated insulation and cooling structures are driving the demand for advanced electrical equipment, for instance, magneto optic current transformer market over the forecast. Global magneto optic current transformer market 2019 by. Optical technology applicationsbegan in 1986 with combined efforts of tva and abb. In an conventional current transformers, there is a chance of. Optical current transformeroct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. The discovery of magnetooptical effects evoked a new thought that the nature of light was an electromagnetic entity, and. Scribd is the worlds largest social reading and publishing site. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings.
Download the seminar report for magneto optic current. Feeler editorial coordinator conventional eddy current inspection devices have been used for many years in various nondestructive testing ndt applications. The marketwatch news department was not involved in the creation of the content. A current model is the t79100 drive, which has a maximum capacity of 9. Jul 03, 2017 magneto optic current transformer technology moct analyzer is that photo detectors can only detect the intensity of light, rather than the orientation of polarizations. The shunt resistor rsh is an integral part of the secondary. In an conventional current transformers, there is a chance of saturation of magnetic field under high current, complicated insulation and cooling structure, a chance of electro magnetic interference. The constructed optoelectronic current sensor was tested for detection of current with intensity of the order. Complete polarization analysis of a magnetooptic current transformer with a new polarimeter, conf. Current status of the magnetooptic spatial light modulator.
The faraday effect states that the rotation of the plane of polarization of a beam of light which passes. Optical current transducers for electrical power systems nist page. The basic principle of fiber optic current sensors focs and optical current transformers octs is to measure polarization rotation due to the faraday effect. It describes the rotation of polarisation of light propagating in the direction of a magnetic field.
Optical fibre current sensor for electrical power engineering. It appears that the newly emerged magneto optical current transformer technology provides a solution for many of the above mentioned problems. Wave propagation in the magnetooptical material and rotation of its. Current transducers a bulkoptics current transducer abbs first generation magnetooptic current transducer moct with more than 10 years of field experience exploits the faraday effect in a.
Magnetoopticeddy current imager a promising new development in nondestructive testing by robert a. The optical ct uses the faraday effect of silica optical fiber. Optical current transformers are current sensors which work on the magnetooptic effect. Field test of dc optical current transformer for hvdc link. Moct magnetooptical current transformer seminar topics. Also get the seminar topic paper on magnetooptical current transformer technology moct with abstract or synopsis, documentation on advantages and disadvantages, presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2016 2017. By applying faradays principle, magneto optic current transformer provides an easier and more accurate way of current measurements. Download the seminar report for magneto optic current transformer.
The faraday effect is the rotation of the polarization state of light. Based on fiber technology and a new physical effect reported, the diffraction. The influence of birefringence on the measuring signal is discussed. Magneto optic current transformer seminar report pdf. The principles of optical and optical fiber current sensor technology have been known for some considerable time. Conclusion this magnetooptical current transducer eliminates many of the drawbacks of the conventional current transformers. Basis for moctinteraction between the magnetic field of the primary conductor and the optical activity of glass material magneto optical current transformer is an instrument transformer,using. Apr 09, 2020 the expresswire request now final report will add the analysis of the impact of covid19 on. Ieee trialuse standard for optical ac current and voltage sensing systems no shorttime thermal test is required for optical current transformers unless they use magnetic cores or wire windings. Also explore the seminar topics paper on magnetooptical current transformer technology moct with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or.
The faraday effect is a magnetooptical effect that causes a change of the state of polarisation of light in the presence of a magnetic field. The magnetooptic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. A current transformer transforms the current down to a reasonable level and provides an isolation barrier. The moct measures the electric current by means of faraday effect, which was first observed by michael faraday 150 years ago. The faraday effect is a magneto optical effect that causes a change of the state of polarisation of light in the presence of a magnetic field. Global magneto optic current transformer market analysis. Magneto optical current transformer technology provides a solution. Optical current transformer oct has been sought for the past two decades but has not been realized satisfactorily because of the problems in the long term field use of the polarizationpreserving optical fibers which are required in the sensors based on the traditional principles such as faraday rotation, etc. The history of magnetooptical effects is first introduced. First, a theoretical analysis was performed on the effect of temperature on the performance of the sensing element of paramagnetic rare earthdoped magnetooptical glass material that can be used in an optical current transducer application. Moct optical current transformer system for metering 72. Magneto optical recording june 27, 2014 43 the university of alabama. Magnetooptical current transformer technology provides a solution. Fiberoptic current and voltage sensors for highvoltage.
To measure currents power stations and substations. The magneto optical current transformer is based on the faradays effect. These sensors work by measuring the angle of rotation of a polarized beam of light. Optical current transformers based on optical fibre sensors are now being. The moct measures the electric current by means of faraday effect. Magnetooptical current transformer technology by prasanth. In the power system instrumentation, the magneto optic current transformer plays a very crucial role. Global magneto optic current transformer market professional. Explore magneto optical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. Magneto optic current transformer market segmentation and. The moctp system is suitable for outdoor application and has a continuous current rating. Study on magnetooptic balance type of optical fiber current. Optical measurement of currents in power converters. Introduction moctprinciple the magneto optical current transformer is based on the faradays effect.
The magnetooptical current transformer is based on the faradays effect. While eddy current ndt has proven to be very effective and is widely used, it does. Sep 01, 2015 first, a theoretical analysis was performed on the effect of temperature on the performance of the sensing element of paramagnetic rare earthdoped magneto optical glass material that can be used in an optical current transducer application. Arteche optical current transformer is presented as an alternative to current conventional current transformers, offering an advanced solution for both measuring and protection applications based on optical technology. Optical current transformer market global industry analysis. Design and development of a lowcost optical current sensor. The magnetooptic effect was discovered by sir michael faraday.
Development of models for optical instrument transformers by. A highaccuracy optical current transformer optical ct for dc current measurement has been developed. Study on magnetooptic balance type of optical fiber. Some of the main features of optical current transformer are. Optical current sensor for dc measurement request pdf.