A revolution in high dc current measurement abbs new fiberoptic current sensor focs for the electrowinning industry klaus bohnert peter guggenbach current measurement systems within the electrowinning industry are a necessity. The magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Magnetic field inhomogeneity induced on the magnetooptical. We propose a novel structure of the sensor head for optical current transducer oct, which consists of a bulk magneto optic glass with graded index grin and a ferromagnetic ring acting as. And then the main advantages and disadvantages of several. An analysis of the distribution of the magnetic field flux inside the conductor was performed. Physical on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Other terms are optical current sensor and magneto optical current sensor mocs. 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. Hardware and developed software were constructed for the acquisition of weak. Moct optical current transformer system for metering 72. The current sensitivity of this new design is almost three times higher than that of a previous design based on a similar principle. Mar 25, 2012 conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. To measure currents, power stations and substations conventionally employ inductive type current transformers. February 7th, 2017 by afsal meerankutty 1 comment an accurate current transducer is a key component of any power system instrumentation. Magnetooptical current transformer technology moct. Research of an optoelectronic current transformer based on.
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 technology provides solution to many of the problems of. The light is communicated to a magnetooptic garnet that includes, among other elements, bismuth, iron and oxygen and is coupled to the conductor. A variety of ferromagnetic metal thin films have been used for magnetoplasmonic device applications, yet the dependence of sensor performance on the optical and magneto optical properties of ferromagnetic metal materials has been rarely studied. The magneto optical current transformer is based on the faradays effect. Yousif 1 national institute of laser enhanced sciences, cairo university, egypt 2 electrical power and machines department, faculty of engineering, cairo university, egypt tel 201064088409. Considering that a magnetooptic faraday effect may play an important role in the design of multirange electric current measurements, a novel rangechanging facility using shunts is proposed and. 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. Based on the magnetooptic effect faraday effect in a singleended optical fiber around the current conductor, the focs can measure uni or bidirectional dc currents up to 500 ka with an accuracy of 0. A new type of clampon magnetooptical current transducer based on the faraday effect is presented.
Moctmagneto optic current transformer 1 free download as powerpoint presentation. Pserc project performance assessment of advanced digital measurement and protection systems t22. Explore magnetooptical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. To measure currents power stations and substations. 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.
Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic field when the. This paper presents a new kind of current transducer known. Oct 07, 2019 magneto optic current transducer moct ppt. In the present paper, a magneto optic element like terbium doped glass tdg has been experimentally studied for its use as an over current detector. Magnetoelastic magnetostrictive transducers electricalvoice. Download moct ppt for seminar in electrical engineering. Recently, studies on the magnetoptical property of hmo glasses attract many interests due to their potential appli cations as magneto optical current transducer moct for high voltage electric current system, optical rotator. Optical current transducers for electrical power systems nist page. Other terms are optical current sensor and magnetooptical current sensor mocs. The magneto optic garnet is configured to be coupled to the conductor and is in optical communication with the polarizer. Applications a magneto striction transducer is a device that is used to convert mechanical energy into magnetic energy and vice versa. The analyzer detects the rotation of the linearly polarized light caused by the magneto optic garnet. Magnetooptical current transformer technology moct page link. Magneto optic current transformer technology moct attish jain btech, eee, srm university kancheepuram kattankulathur 603203 abstract.
The optical current transducer also includes an analyzer in optical communication with the magneto optic garnet. Magnetoplasmonic sensors are attractive candidates for ultrasensitive chemical and biomedical sensor applications. Based on the magneto optic effect faraday effect in a singleended optical fiber around the current conductor, the focs can measure uni or bidirectional dc currents up to 500 ka with an accuracy of 0. As the most promising method among them, a current measuring method which uses a magneto. A variety of ferromagnetic metal thin films have been used for magnetoplasmonic device applications, yet the dependence of sensor performance on the optical and magnetooptical properties of ferromagnetic metal materials has been rarely studied.
Effect of ceramic crucibles on magnetooptical pbobi2o3. Based on principle of faraday effect, high rotation material. The good sensitivities of the fiber magneto optical current transducer and the bulk magneto optical current transducer are due to the high verdet constant and homemade signalacquisition hardware. An accurate electric current transducer is a key component of any power system instrumentation.
Conventional current transformers becomes more and more bulky and costly. The device developed is a magnetooptic current transducer moct. Research of an optoelectronic current transformer based on a designed magnetooptic sensor 1, r. Magnetooptical imaging has developed rapidly over the last decade to emerge as a leading technique to directly visualise the static and dynamic magnetic behaviour of materials, capable of following magnetic processes on the scale of centimeters to. Optical current transducer for electric power system 1994. Pdf magneto optic current transformer technology moct. Abb fiberoptic current sensor focs for high dc currents. The light is communicated to a magneto optic garnet that includes, among other elements, bismuth, iron and oxygen and is coupled to the conductor. The seminar topic is based on magneto optical current. The optical current transducer includes a light source and a polarizer that generates linearly polarized light received from a the light source. Sep 04, 2017 magneto strictive transducers contents hide 1.
This magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. A current measurement technique using the magneto optic or faraday effect, has been developed, tested, and demonstrated. The principles of optical and optical fiber current sensor technology have been known for. Research of an optoelectronic current transformer based on a designed magneto optic sensor 1, r. In the following, we will consider optical current and voltage sensors that have been developed at abb and examples of their applications. To measure currents power stations and substations conventionally employ inductive type current transformers.
Optical current transducer for electric power system. Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. The device developed is a magneto optic current transducer moct. To measure currents, power stations and substations conventionally employ inductive type current transformers with core and windings. The magnetooptic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. A current measurement technique using the magnetooptic or faraday effect, has been developed, tested, and demonstrated. It uses the rotation of the plane of polarization by a magnetic field exhibited in certain glasses faraday effect. Diamagnetic tellurite glass and fiber based magnetooptical. Note than an optical current transducer appears to be a conventional current transformer operated uninsulated at high voltage, and both reporting via, and powered by, an optical fiber. Overcurrent detectors ocds are important components in system control but suffer from electromagnetic interference, noise, low response etc.
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. 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. A magnetooptical current measuring device includes a collimating lens arrangement for focusing a light signal into a parallel beam of light, which beam of light, when polarized is communicated through a faraday rotator which is disposed in surrounding proximity to the transmission line in which it is desired to measure the current flow. 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. Hardware and developed software were constructed for the acquisition of weak output signals induced by a low current. The easy and flexible use characterizes this technical innovation. Moct magnetooptical current transformer seminar topics. 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 current transducer is a key component of any power system instrumentation. A current measurement technique using the magnetooptic or faraday effect has been developed, tested, and demonstrated. 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.
Magneto optic current transducer moct ppt published in. Optical fiber current sensor ofcs based on faraday magnetooptic effect has many advantages of immunity against electromagnetic interference, high sensitivity and wide dynamic range. The measured parameter is the geometrical position of the boundary between. The moct measures the electric current by means of faraday effect. The expansion of the high voltage power transmission system since the 50s and 60s has aroused an interest in using optical techniques for measuring the electric current. Magnetooptical current sensors of high bandwidth deepdyve. Performance assessment of advanced digital measurement. A magnetooptical measuring transducer for use as a faraday rotator in a device to measure high currentsvoltages in response to a magnetic field created by the current to be measured by rotating the direction of polarization of a beam of polarized light characterized by the transducer having a first magnetically saturable part and a second part which has a paramagnetic behavior. Diamagnetic teo2znona2o glasses and fibers were fabricated and characterized for magnetooptical currentsensor applications.
Magnetooptical current transformer technology moct seminar. Performance assessment of advanced digital measurement and. Development of an optical current transducer with a bulk type faraday sensor for metering ieee trans. Magneto optic current transformer full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. Introduction moctprinciple the magneto optical current transformer is based on the faradays effect. Focs fibre optic current sensor for measuring high dc currents. Wave propagation in the magnetooptical material and rotation of its. Optical current transducer for electric power system liu, yanbing 19941101 00. The magneto optic garnet is configured to rotate the polarization of the linearly polarized light received from the polarizer. Optical interface for a magnetooptical current transducer. Traditionally the measurement of dc currents up to 500 ka requires highly sophisticated current transducers. Us3980949a magnetooptical measuring transducer for very.
Considering that a magneto optic faraday effect may play an important role in the design of multirange electric current measurements, a novel rangechanging facility using shunts is proposed and. Magnetooptic current sensor the university of chicago. Download the seminar report for magneto optic current. As the most promising method among them, a current measuring method which uses a magnetooptic effect called the faraday effect have been proposed. Magneto optical imaging has developed rapidly over the last decade to emerge as a leading technique to directly visualise the static and dynamic magnetic behaviour of materials, capable of following magnetic processes on the scale of centimeters to submicrons and at timescales from hours to. Magneto optic current transformer seminar report pdf. Magnetooptical current transducers moct based on faraday effect have been developed worldwide as alternative to conventional optical ones because mocts are compact and lightweight, immune to electromagnetic noise, and they offer a wide measurement range and long distance signal transmission. Magneto optic current transformer full seminar report, abstract.
Properties and structure of faraday rotating glasses for. The moctp system is suitable for outdoor application and has a continuous current rating. A fiberoptic current sensor focs is a current sensor for measuring direct current. Fiberoptic current and voltage sensors for highvoltage. As the most promising method among them, a current measuring method which uses a magneto optic effect called the faraday effect have been proposed. A current measurement technique using the magneto optic or faraday effect has been developed, tested, and demonstrated.
Osa diamagnetic tellurite glass and fiber based magneto. With short circuit capabilities of power system getting larger and the voltage level going higher the conventional current transducers becomes more. Magnetic field inhomogeneity induced on the magneto. Oct 07, 2003 the optical current transducer also includes a magneto optic garnet comprising bismuth bi, iron fe, and oxygen 0. A magneto optical measuring transducer for use as a faraday rotator in a device to measure high currentsvoltages in response to a magnetic field created by the current to be measured by rotating the direction of polarization of a beam of polarized light characterized by the transducer having a first magnetically saturable part and a second part which has a paramagnetic behavior. A change in mechanical stress of a ferromagnetic material causes its permeability to change. Diamagnetic tellurite glass and fiber based magneto. Focs fibreoptic current sensor for measuring high dc currents.
The magnetooptical current transformer is based on the faradays effect. Magnetooptic current transformer polarization waves transformer. Diamagnetic tellurite glass and fiber based magnetooptical current transducer article in applied optics 5429. Ppt moctmagneto optical current transformer powerpoint.
Download the seminar report for magneto optic current transformer. Pdf optical current transducers octs have clear advantages over. Magneto optic current transducermoct ppt published in. It is openable, hybrid, and squareshaped, and it has an. Download moct seminar report and ppt to learn more. Current transducers a bulk optics current transducer abbs first generation magneto optic current transducer moct with more than 10 years of field experience exploits the faraday effect in a. 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. An optical current transducer configured to sense current in the conductor is disclosed. Download citation on mar 1, 2017, attish jain and others published magneto optic current transformer technology moct find, read and cite all the. Moct technology provides solution to many of the problems of conventional current transformer.
Magnetooptic current transformer free download as word doc. Magnetooptical current transformer technology moct posted by. 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. Magnetooptical current sensors of high bandwidth magnetooptical current sensors of high bandwidth didosyan, y. Free download complete engineering seminar magneto optic current transformer seminar report pdf. Mar 17, 2014 a ppt on magneto optic current transducer. The optical current transducer of claim 1, wherein the magnetooptic garnet rotates the direction of polarization by an angle substantially represented by the relationship. To measure currents, power stations and substations conventionally. Introduction an accurate electric current transducer is a key component of any power system instrumentation. 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.
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