Optical current transformer oct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. Generally, an ebook can be downloaded in five minutes or less. If so, share your ppt presentation slides online with. Osa error characteristic analysis and experimental. Conventional current transformers becomes more and more bulky and costly. 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. Magnetic optical current transformer market analysis and industry forecast from 2019 to 2026. Free seminar reports, ppt presentation topics and abstract. 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. 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. 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. Each type of transformer requires different magnetic characteristics regarding parameters such as permeability. Bharati vidyapeeths college of engineering presented by shashank singhal 2. Optical technology applicationsbegan in 1986 with combined efforts of tva and abb.
Frequency response characteristics of oit outputs are obtained. Transformers are devices used in lighting systems to help reduce or stepdown high voltages to lower voltages. We report on abbs fiberoptic current and voltage transducers and their applications in highvoltage substations. Magneto optical current transformer technology by prasanth.
Nov 15, 2019 the basic principle of the current transformer is the same as that of the power transformer. Whenever an alternating current flows through the primary winding, alternating magnetic flux is produced, which then induces alternating current. The primary winding can consist merely of the primary current conductor passing once through an aperture in the current transformer. Every ethernet frame contains both a source and destination address, both of which are mac. May 05, 2015 thus, by measuring the rotation of the plane of polarization of light it is possible to measure the magnetic field and consequently the current producing the field. Ppt moctmagneto optical current transformer powerpoint presentation free to download id. Introduction moctprinciple the magneto optical current transformer is based on the faradays effect. A comparison of current sense schemes listing advantages and disadvantages of each type. Extensive bandwidth, able to measure both dc and ac current.
Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Transformers and optoisolators are the only two classes of electronic devices. Magnetic optical current transformer market size, industry trends. Extensive bandwidth, able to measure both dc and ac current up to 100 harmonic and above.
Advantages of optical current and voltage sensors and. The moct measures the electric current by means of faraday effect. This section contains lecture notes in both pdf and powerpoint formats. Also explore the seminar topics paper on magneto optical current transformer. To measure the speed of the motor by using optical photo magnetic proximity sensors apparatus required. 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. Engineertoengineer note ee269 a technical notes on using analog devices dsps, processors and development tools contact our technical support at processor. Magnetics current transformer design software assists design engineers in choosing the most appropriate core material and size for a number of current transformer ct topologies.
Magnetooptical current transformer technology moct. Liu, modeling analysis and experiment study on temperature characteristic of allfiber optical current transformer, proc. 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. The magneto optical current transformer is based on the faradays effect. Get magneto optical current transformer technology moct seminar report and ppt in pdf and doc. Linus tech tips is a passionate team of professionally curious experts in consumer technology and video pr. Download moct ppt for seminar in electrical engineering. 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. Octs are based on faraday effect, interferometric principle, bragg grating and micromechanical sensors with optical. Introduction an accurate electric current transducer is a key component of any power system instrumentation. The basic principle of the current transformer is the same as that of the power transformer. After all this i had to make sure that core is not saturating i was increasing current until secondary current was not rising proportionally to primary current. 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. An optoisolator is an electronic component that transfers electrical signals between two.
Also get the seminar topic paper on magneto optical current transformer technology moct with. Engineering books pdf, download free books related to engineering and many more. 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. Conclusion of the applicability of nonoptic magnetic field. If a magnetic compass is placed near a conductor carrying current wire, the needle is deflected. Magneto optic current transformer full seminar report, abstract. Fiber optic current sensors and optical current transformers. To measure currents power stations and substations conventionally employ inductive type current transformers with core and windings. 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.
Also explore the seminar topics paper on optical technology in current. Force an a current carrying conductor in a magnetic field. 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 recent years optical current and voltage transducers have reached a high degree of maturity and started to compete with conventional instrument transformers. Optical current transformer market global industry analysis. 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. Magnetic effect of a current hens christian oersted 17771851 was the first scientist to observe that a compass needle gets deflected when placed near a current carrying a conductor.
Commonly used in homes with trackmonorail or landscape lighting systems, transformers convert the standard residential electric current 120 volts to a lower voltage 12 volts or 24 volts required by the lamp or lighting system. Magnetic hard disk mechanism is the property of its rightful owner. This forum provides unlimited free download of latest seminar reports and ppt on. Some of the slides include animations, which can be seen by viewing the powerpoint file as a slide show. 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. 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. Then to summarise, the current transformer, ct is a type of instrument transformer used to convert a primary current into a secondary current through a magnetic medium. Current transformer the mostused device for measurements of alternating currents in electrical high and mediumvoltage networks is the ct current transformer. Conventional current transformers use the principle of electro. The global market is segmented by type, application, and region. The iccs consists of an inductive current transformer having a primary winding, a small core and a minimizedloss secondary winding.
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 transformer technology moct by. What is the abbreviation for magnetic optical current transformer. Optical technology in current measurement seminar report. Michael faraday discovered that the orientation of linearly polarized light was rotated under the influence of the magnetic. 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. Current transformer basics and the current transformer. 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. The faraday effect is the rotation of the polarization state of light. Note that current i c is in phase with e 1 and that current i m is phaseshifted by 90.
Magneto optic current transducer consist of a sensor head located near the current carrying conductor, an electronic signal processing unit and fiber optical. Ppt on magnetic effect fof electric current authorstream presentation. Nov 17, 20 conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Whenever an alternating current flows through the primary winding, alternating magnetic flux is produced, which then induces alternating current in the. There are four typical types of current transformers.
We consider bulkoptics and allfiber current sensors and voltage sensors that exploit the electrooptic effect in bgo and the piezoelectric effect in quartz. The global optical current transformer market can be segmented on the basis of type, voltage range and application. A current transformer transforms the current down to a reasonable level and provides an isolation barrier. To download the current transformer design tool, enter and submit your contact information below. Ppt magnetic hard disk mechanism powerpoint presentation. Find materials for this course in the pages linked along the left. Magnetic effects of electric current for 10th class authorstream. Optical measurement of currents in power converters. 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. During the forecast period, north america will be closely followed by asia pacific in terms of expected demand. 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. Traditional, often line frequency current transformers, hall effect current transformers and switchmode power supply smps current transformers are examined in depth. Explore magneto optical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. Fiberoptic transducers are ideally adapted to highvoltage environments as they are highly immune to electro magnetic.
Explore optical technology in current measurement with free download of seminar report and ppt in pdf and doc format. Then i created another transformer with more turns added turns proportionally to get desired secondary current at 1a on primary. Introduction in recent years optical current and voltage. Moct magneto optical current transformer presentation. The current transformer will operate into either a short circuit or a resistive load until the voltage induced is enough to. Current transformers cts and voltage transformers vts are used extensively in substations for measuring and monitoring voltage and current. Magnetooptical current transformermoct seminar report.
Current transformer errors and transformer inrush as. 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. Fiber optics current sensor free standing focsfs is a freestanding 3phase sensor system for 245 kv to 800 kv high voltage substations one system consists in. Mac address a 6octet number representing the physical address of the nodes on an ethernet network. A slotted optical switch contains a source of light and a sensor, but its optical. For high voltage applications, porcelain insulators. Fiberoptic current and voltage sensors for highvoltage. Magneto optic current transformer technology moct analyzer is that photo detectors can only detect the intensity of light, rather than the orientation of polarizations. Its secondary winding then provides a much reduced current which can be used for detecting overcurrent, undercurrent, peak current, or average current conditions. Like the power transformer, the current transformer also contains a primary and a secondary winding. The moctp system is suitable for outdoor application and has a continuous current rating. Conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Engineering books pdf download free engineering books. From transformer theory, we recall that current i c represents power losses in the transformer core, and that current i m represents the current required to produce the magnetic.
They are widely used in substations and power systems. The block responsible for implementing the media access control functions of the ethernet specification. Ppt on magnetic effect fof electric current authorstream. Octs are based on faraday effect, interferometric principle, bragg grating and micromechanical sensors with optical readout. Magneto optic current transformer full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. In a conventional current transformer, there is a chance of saturation of magnetic field under high current. Option to save your current transformer design for reference and comparison.
An accurate electric current transducer is a key component of any power system instrumentation. To measure currents power stations and substations conventionally employ inductive type current transformers. Fr2656931a1 measuring transformer using optical means. Scribd is the worlds largest social reading and publishing site. Magnetooptical current transformer technology moct seminar. The current transformer function is different than that of a voltage transformer. A dissertation presented in partial fulfillment of the. Current transformer errors and transformer inrush as measured. This shows that a conductor carrying current has a magnetic. 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. Moctmagneto optic current transformer free download as powerpoint presentation. With over 30 years experience of the specialty optical fiber industry, fibercore ltd, the world leader in its field, is exclusively dedicated to the design, manufacture and. This shows that a conductor carrying current has a magnetic field around it. 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.
Moct abbreviation stands for magnetic optical current transformer. Mar 17, 2014 a ppt on magneto optic current transducer. A fiberoptic current sensor focs is a current sensor for measuring direct current. Download the seminar report for magneto optic current transformer. The magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers.
A current transformer operates with a set primary current and will try to output a constant current to the load, independent of the load. Sep 11, 2016 the iccs consists of an inductive current transformer having a primary winding, a small core and a minimizedloss secondary winding. Download moct seminar report and ppt to learn more. 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.
625 1546 1653 443 1222 192 999 582 1457 181 603 655 179 1322 1090 68 695 587 555 1488 1601 612 269 145 296 135 1482 316 1155 1344