To measure currents power stations and substations. 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. Pdf optical current sensors for high power systems. 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. Get magneto optical current transformer technology moct seminar report and ppt in pdf and doc. Magnetoopticcurrenttransformer linkedin slideshare. Feb 12, 2017 in this video you will learn about what is current transformer, important concepts of current transformer, how current transformer work, use of current transformer. Get magnetooptical current transformer technology moct seminar report and ppt in pdf and doc. February 7th, 2017 by afsal meerankutty 1 comment an accurate current transducer is a key component of any power system instrumentation. Octs are based on faraday effect, interferometric principle, bragg grating and micromechanical sensors with optical readout. Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic field when the. 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. In the power system instrumentation, the magneto optic current transformer plays a very crucial role.
Current measurement with optical current transformer. Download the seminar report for magneto optic current. Oct 07, 2019 moctmagneto optical current transformer powerpoint ppt presentation. 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. It is possible to measure currents up to 2 ka at high voltage power systems.
Conventional current transformers use the principle of electro. Inrush may be high in magnitude, may contain a heavy dc offset with a long time constant, and it may have a unipolar halfwave nature. The magneto optic garnet is configured to rotate the polarization of the linearly polarized light received from the polarizer. In this paper, we described a comparison between optical current transformers and conventional current transformers. May 29, 2011 magnetooptical current transformer technology by prasanth sun may 29, 2011 5.
The magneto optic current transformer is used in order to assist the smooth flow of the current with a high voltage. Research of an optoelectronic current transformer based on. Explore magnetooptical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. It appears that the newly emerged magneto optical current transformer technology provides a solution for many of the above mentioned problems. Nov 17, 20 conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Pdf magneto optic current transformer technology moct. It describes the rotation of polarisation of light propagating in the direction of a magnetic field. An optical current transformer oct with dual polarimetric configuration is evaluated using a magneto sensitive glass sf59 of 0. Moct magnetooptical current transformer seminar topics. Optical current sensors ocss show several important features when compared with conventional current transformers cts, such as their having highly effective isolation from high line potentials offered by the dielectric nature of the optical fibers, freedom from the saturation effect which may be observed in conventional transformers, the. Electrooptic voltage transducers eovt it appears that the tecbnology emerged magneto optical current transformer technology provides a solution for many of the above mentioned problems. The fiber optical current transformer foct with sine wave modulation has been widely used in the dc transmission project, while its fault rate is much higher than that of an electromagnetic current transformer, which seriously threatens the safe operation of power grid.
Magneto optic current transformer market 2020 by technology. An optical metering unit omu combines optical current and voltage transducers moct and eovt in a lightweight and compact singlephase unit fig. 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. Pdf magnetooptical fiber sensor based on magnetic fluid. Optical current transducers for electrical power systems nist page. Optical current transformer oct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. Mar 17, 2014 magnetooptic current transducer moct ppt.
Conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Optical technology applicationsbegan in 1986 with combined efforts of tva and abb. Magnetooptical current transformer of high bandwidth and. 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. The use of the magneto optic current transformers are widening in the instrumentation and power station industry due to its features such as resistance to the high voltage and nonexistence of the saturation effects. 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. 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. 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. Magnetooptical fiber sensor based on magnetic fluid article pdf available in optics letters 373.
Optical character recognition ocr is the technology used to distinguish printed or handwritten text characters within digital images of physical. Magneto optic current transformer full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. The moct measures the electric current by means of faraday effect, which was first observed by michael faraday 150 years ago. But it has some disadvantages also, like if the magnetic fields induced by the currents through other conductors is sufficiently high, the fault current measured will have some errors. The magnetooptic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. Among these, magneto optical current transformer is highly preferred due to its innovative features and benefits regarding regulations. Request pdf magneto optical current sensors of high bandwidth a new current transformer is described by means of new results concerning the domain wall excitation in orthoferrites. Conventional current transformers becomes more and more bulky and costly. Optical current transformer is an alternative to the existing conventional current transformers, providing an advanced measurement solution for both metering and protection applications, based on a cuttingedge patented optical sensing technology. Magnetooptical current transformer technology moct seminar. Fiberoptic current and voltage sensors for highvoltage.
This magneto optic current transformer is widely used in power systems and substations nowadays. Magneto optic current transformer linkedin slideshare. Generally, this phenomenon can be described as follows. Moct optical current transformer system for metering 72. 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. Fault mechanism of fiber optical current transformer based.
Instrument transformer basic technical information and. 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. Pdf current measurement with optical current transformer. In order to investigate the fault mechanism of foct, the output signal model of the foct photodetector. To measure currents power stations and substations conventionally employ inductive type current. Advantages of optical current and voltage sensors and.
Mar, 2014 download optical current transformer oct ppt for electrical engineering seminar. Magneto optic current transformer market global industry. Some of the main features of optical current transformer are. The magneto optical current transformer is based on the faradays effect. The analyzer detects the rotation of the linearly polarized light caused by the magneto optic garnet. Bharati vidyapeeths college of engineering presented by shashank singhal 2. 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. It has the adv antages of high measurement accuracy, large. It uses the rotation of the plane of polarization by a magnetic field exhibited in certain glasses faraday effect. Moct magneto optical current transformer powerpoint ppt presentation. Global magneto optic current transformer market analysis.
Optical current transformers are suitable for power system protection and can replace the magnetic current transformers. Transformer transformer,construction of magnetoptical of transformer,winding,equivalent circuit diagram,emf equation,theory of operation powerpoint ppt presentation free to view. Current transformer errors and transformer inrush as. An optical current transformer based on anglecomparison technology had been reported and been constructed using magneto optical materials and iron core surrounding around one current carrying conductor, which is wounded by coils into which the detectable current is injected. Apr 09, 2020 the expresswire request now final report will add the analysis of the impact of covid19 on this industry. Introduction moctprinciple the magneto optical current transformer is based on the faradays effect. Also get the seminar topic paper on magneto optical 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.
A current measurement technique using the magneto optic or faraday effect, has been developed, tested, and demonstrated. The optical current transducer also includes an analyzer in optical communication with the magneto optic garnet. In this paper design and test of a lab sample of a current transformer using magneto optic effect is discussed. Magneto optic current transformer technology moct by. 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. Magneto optic current transformer seminar report pdf. The moct measures the electric current by means of faraday effect. The magneto optic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. In this video you will learn about what is current transformer, important concepts of current transformer, how current transformer work, use of current transformer. So we need some new measuring devices with high accuracy for power transmission lines. The moct measures the electric current by means of faraday effect, which. An optical current transformer using the faraday effect, characterized in that said optical current transformer comprises a magneto optic sensor unit having a faraday rotator 6. Potential transformers consist of two separate windings on a common magnetic steel core.
Study on magnetooptic balance type of optical fiber. The measurements are contactless and the measured signal is transmitted by a light beam propagating in air or in optical fibers. The reduced size and increased accuracy of the omu compared to conventional oilfilled current and voltage transformers make the design particularly. Transformer transformer,construction of magnet optical of transformer,winding,equivalent circuit diagram,emf equation,theory of operation powerpoint ppt presentation free to view. Download optical current transformer oct ppt for electrical engineering seminar. 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. Magneto optical current transformer technology by prasanth. Conclusion of the applicability of nonoptic magnetic field. Magneto optic current transformer market segmentation and. Apr 02, 2020 this magneto optic current transformer is widely used in power systems and substations nowadays.
In contrast, the principle of operation of the new sensor is based on the direct registration of the domain wall. Magneto optic current transformer full seminar report, abstract. Optical current transformeroct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. Using an optical current transformer has several advantages, e. Magnetooptical current transformer technology moct. Study on magnetooptic balance type of optical fiber current.
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. Optical current transformer are available in two different types that are magneto optical current transformer and fiber optical current transformer. Abb has also developed since 1990s optical current sensors, based on the faraday effect principle, whereby light is used to deduce the precise magnitude of current that is creating the magnetic field. In the majority of magneto optical current transformers developed to date, the main parameter is the angle of light polarization faraday rotation. 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.
The development of power electrical systems causes attention to accuracy of protection elements and measurement values. Conclusion this magnetooptical current transducer eliminates many of the drawbacks of the conventional current transformers. An accurate electric current transducer is a key component of any power system instrumentation. Magnetooptical current sensors of high bandwidth request pdf. Effects in an optical medium that are dependent on the direction of light propagation.
Current transformer the mostused device for measurements of alternating currents in electrical high and mediumvoltage networks is the ct current transformer. Optical current transformer market global industry. A fiberoptic current sensor focs is a current sensor for measuring direct current. Extensive bandwidth, able to measure both dc and ac current up to. Transformer inrush may be among the worst types of current for a magnetic ct to reproduce, because it has a combination of effects that put ct performance most at risk. Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Magneto optical current transformer department of electrical and electronics. Ppt moctmagneto optical current transformer powerpoint. Fiber optical current transformer foct is an electronic current transformer based on faraday magneto optic effect. Optical current transformer market global industry analysis. 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. Optical current transformer oct ppt topics for seminar.
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. It uses the rotation of the plane of polarization by a magnetic field exhibited in certain. A current transformer using magnetooptic sensor ieee. The device developed is a magnetooptic current transducer moct. The device developed is a magneto optic current transducer moct. 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. In the following, we will consider optical current and voltage sensors that have been developed at abb and examples of their applications. Optical measurement of currents in power converters.
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