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. The seminar topic is based on magneto optical current transformer presented byaishwarya verma0902011 2. 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. Fiberoptic transducers are ideally adapted to highvoltage environments as they are highly immune to electro magnetic interference and there is no galvanic connection. 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. Download optical current transformer oct ppt for electrical engineering seminar. 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. Moct block diagram applications pros and cons conclusion 3.
Moct abbreviation stands for magnetic optical current transformer. Global magneto optic current transformer market analysis. Conventional current transformers becomes more and more bulky and costly. Magneto optic current transformer full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information.
Magneto optic current transformer market segmentation and. 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. Fiber optic current sensors and optical current transformers. Pdf current measurement with optical current transformer. The moct measures the electric current by means of faraday effect.
Download the seminar report for magneto optic current. The magnetooptical current transformer is based on the faradays effect. Explore magnetooptical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. Wave propagation in the magnetooptical material and rotation of its plane of polarization.
Transformer transformer,construction of magnet optical of transformer,winding,equivalent circuit diagram,emf equation,theory of operation powerpoint ppt presentation free to view. Oct 07, 2019 moctmagneto optical current transformer powerpoint ppt presentation. February 7th, 2017 by afsal meerankutty 1 comment an accurate current transducer is a key component of any power system instrumentation. A current measurement technique using the magneto optic or faraday effect, has been developed, tested, and demonstrated. An accurate electric current transducer is a key component of any power system instrumentation. In this video you will learn about what is current transformer, important concepts of current transformer, how current transformer work, use of current transformer. Silva 1, hugo martins 1,2, ivo nascimento 1,2, jose m. The device developed is a magnetooptic current transducer moct. Current status of the magnetooptic spatial light modulator. Fiberoptic current and voltage sensors for highvoltage. 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.
Yig magneto optic thin films fabricated by pulsed laser deposition method for an optical current transformer author hiromitsuhayashi, souhachiiwasa, nilesh j. Pdf research on error mechanism analysis and compensation. Bharati vidyapeeths college of engineering presented by shashank singhal 2. 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 optical current transformer technology provides a solution. 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. 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. 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.
Optical current transducers for electrical power systems nist page. Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic field when the. Performance of magnetooptical glass in optical current. One of these devices is optical current transformer oct. In the power system instrumentation, the magneto optic current transformer plays a very crucial role. Contents introduction ct purpose and demerits moct principle, design, working. Magnetic optical current transformer market size, industry. Magnetooptic current transformer free download as word doc. 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. Magnetooptical current transformermoct seminar report. Thus, the magneto optic current transformer works on faradays effect to measure the electric current.
Vasa, tsuyoshiyoshitake, kiyotakaueda, shigeruyokoyama and sadaohiguchi. Study on magnetooptic balance type of optical fiber. Download citation on mar 1, 2017, attish jain and others published magneto optic current transformer technology moct find, read and cite all the. Magnetooptical current transformer of high bandwidth and. Study on magnetooptic balance type of optical fiber current. Explore optical technology in current measurement with free download of seminar report and ppt in pdf and doc format. Faradays work in the 19th century showed that a changing current in a conductor e. Download as pptx, pdf, txt or read online from scribd. Magneto optic current transformer technology moct analyzer is that photo detectors can only detect the intensity of light, rather than the orientation of polarizations.
A transformer changes the voltage level or current level on its input winding to another value on its output winding using a magnetic field. In recent years optical current and voltage transducers have reached a high degree of maturity and started to compete with conventional instrument transformers. Fault mechanism of fiber optical current transformer based. It describes the rotation of polarisation of light propagating in the direction of a magnetic field. 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. Optical current transformer oct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. As a current passes through the primary winding it induces a magnetic flux in the steel core. Vh is a function of the current density, the magnetic field, and the charge density and carrier mobility of the conductor. Magneto optic current transformer is a device that uses the influence of magnetic field to rotate orientation of polarized light. Based on the faraday effect, magneto optical current transformers mocts provide numerous advantages as compared with conventional measuring transformers.
What is the working principle of a current transformer. Instrument transformer basic technical information and. 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. 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 development of power electrical systems causes attention to accuracy of protection elements and measurement values. Working principle of a transformer the basic principle on which the transformer works is faradays law of electromagnetic induction or mutual induction between the two coils. The transformer consists of two separate windings placed over the. The faraday effect is the rotation of the polarization state of light.
Pdf optical current sensors for high power systems. This eliminates costly problems of potential separation. Magnetooptical current transformer technology moct seminar. Research of an optoelectronic current transformer based on. Transformer transformer,construction of magnetoptical of transformer,winding,equivalent circuit diagram,emf equation,theory of operation powerpoint ppt presentation free to view. Download the seminar report for magneto optic current transformer. 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 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.
Magnetooptical current transformer technology moct. Considering that the capabilities of optical principles are interesting and promising, the following. 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. 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. Get magnetooptical current transformer technology moct seminar report and ppt in pdf and doc.
Extensive bandwidth, able to measure both dc and ac current up to 100 harmonic. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. Current transformers cts and voltage transformers vts are used extensively in substations for measuring and monitoring voltage and current. Pdf optical current transducers octs have clear advantages over. Global magneto optic current transformer market 2019 by. Advantages of optical current and voltage sensors and. To measure currents power stations and substations. Pdf magneto optic current transformer technology moct. Moct measures the electric current by means of faraday effect. It uses the rotation of the plane of polarization by a magnetic field exhibited in certain glasses faraday effect. The following investigation is divided into two groups. In the majority of magneto optical current transformers developed to date, the main parameter is the angle of light polarization faraday rotation. It consist of a sensor head located near the current carrying conductor, an electronic signal processing unit and.
The magneto optic 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. It appears that the newly emerged magneto optical current transformer technology provides a solution for many of the above mentioned problems. Magneto optic current transformer eliminates many of the drawbacks of the conventional current transformers. Apr 09, 2020 the expresswire request now final report will add the analysis of the impact of covid19 on. A current transformer transforms the current down to a reasonable level and provides an isolation barrier. Current transformer the mostused device for measurements of alternating currents in electrical high and mediumvoltage networks is the ct current transformer. Moct magneto optical current transformer powerpoint ppt presentation. 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. Generally, this phenomenon can be described as follows.
Research of an optoelectronic current transformer based on a designed magneto optic sensor 1, r. The magneto optical current transformer is based on the faradays 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 market over the forecast. The magneto optic current transformer moct is a passive optical current transducer which uses light to accurately measure current on high voltage systems. The iccs consists of an inductive current transformer having a primary winding, a small core and a minimizedloss secondary winding. Magneto optic current transformer seminar report pdf. By applying faradays principle, magneto optic current transformer provides an easier and more accurate way of current measurements. 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 basic principle of fiber optic current sensors focs and optical current transformers octs is to measure polarization rotation due to the faraday effect. 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. Magneto optic current transformer market global industry. 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.
The measurements are contactless and the measured signal is transmitted by a light beam propagating in air or in optical fibers. Moct optical current transformer system for metering 72. Introduction moctprinciple the magneto optical current transformer is based on the faradays effect. The optical current transformer of claim 6, wherein said elastic members comprise volumevariable material. Optical measurement of currents in power converters. Optical technology applicationsbegan in 1986 with combined efforts of tva and abb. To suppress the effect of the linear birefringence in optical fiber sensor on measurement.
Magneto optical current transformer department of electrical and electronics. Magneto optic current transformer technology moct by. The device developed is a magneto optic current transducer moct. Moct magnetooptical current transformer seminar topics. The optical current transformer of claim 4, further including a plurality of elastic members, wherein said elastic members are positioned in at least one gap between said substrate plate grooves and said glass rods. So we need some new measuring devices with high accuracy for power transmission lines. Optical technology in current measurement seminar report. Magneto optic current transformer full seminar report, abstract. Some of the main features of optical current transformer are. 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, 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. A transformer uses the principles of electromagnetism to change one a.
Current transformer errors and transformer inrush as. The marketwatch news department was not involved in the creation of the content. Hall effect sensor the hall effect may be used to measure magnetic fields and hence in contactfree current measurement, but its. These measurements form an essential part of operations and protection functions in the substation, and thus reliability and accuracy of voltage and current transformers vcts is important. In order to investigate the fault mechanism of foct, the output signal model of the foct photodetector is established, and. Fault mechanism of fiber optical current transformer based on.
A fiberoptic current sensor focs is a current sensor for measuring direct current. This magneto optic current transformer is widely used in power systems and substations nowadays. What is the abbreviation for magnetic optical current transformer. The moct measures the electric current by means of faraday effect, which was first observed by michael faraday 150 years ago. Mar, 2014 download optical current transformer oct ppt for electrical engineering seminar. Optical current transformers are suitable for power system protection and can replace the magnetic current transformers. 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. Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Fiber optical current transformer foct is an electronic current transformer based on faraday magneto optic effect. A transformer consists of two electrically isolated coils and operates on faradays principal of mutual induction, in which an emf is induced in the transformers secondary coil by the magnetic. It has the adv antages of high measurement accuracy, large dynamic range, good. Figure 2 depicts the most basic magnetic circuit of an ideal instrument transformer. This current fault detection is the objective of this work. 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.