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. Magnetizing inrush current in transformer is the current which is drown by a transformer at the time of energizing the transformer. Fiberoptic current and voltage sensors for highvoltage. Ppt dc motor powerpoint presentation free to download.
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. 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. Ppt on magnetic effect fof electric current authorstream presentation. Our technology is suitable for use in ac or dc transmission systems.
These sensors typically require fiber optic converters to protect from hazards to personnel and instrumentation inside the aircraft. Moctmagneto optic current transformer 1 electric current. Ppt on magnetic effect fof electric current authorstream. Download the book into available format new update. The fem software comsol multiphysics formerly femlab was used to simulate. Optical current transformers are also known as fibre optic current sensors fcos. The transformer can also be used in highcurrent dc applications, such as large scale aluminum electrolysis companies. 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. We consider bulkoptics and allfiber current sensors and voltage sensors that exploit the electrooptic effect in bgo and the piezoelectric effect in quartz. Fr2656931a1 measuring transformer using optical means. Just ask alexa to check your calendar, create lists, play music, answer questions, read the news and more, even when the app is running in the background or minimized. Magneto optic current transformer full seminar report, abstract. 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. 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.
The faraday effect is the rotation of the polarization state of light. This current is transient in nature and exists for few milliseconds. Force an a current carrying conductor in a magnetic field electric current flowing a conductor produces a magnetic field. We report on abbs fiberoptic current and voltage transducers and their applications in highvoltage substations. Magnetooptical kerr effect analysis of magnetic nanostructures. Magnetic optical current transformer muhammad afzal. Ppt moctmagneto optical current transformer powerpoint presentation free to download id. 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. Instrument transformer ppt transformer electric current. What is the purpose of an ethernet magnetic transformer. Optical current sensors have been under development for decades.
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 commercialization of specialty fibers. Then i created another transformer with more turns added turns proportionally to get desired secondary current at 1a on primary. Traditional, often line frequency current transformers, hall effect current transformers and switchmode power supply smps current transformers are examined in depth. To download the current transformer design tool, enter and submit your contact information below. A fiberoptic current sensor focs is a current sensor for measuring direct current. Current transformer the mostused device for measurements of alternating currents in electrical high and mediumvoltage networks is the ct current transformer. Conclusion of the applicability of nonoptic magnetic field. The moctp system is suitable for outdoor application and has a continuous current rating. Ways to measure mechanical positions within an electromagnetic system, such as a brushless direct current motor, include 1 the hall effect, 2 optical position encoder e. Magnetooptical current transformermoct seminar report. The global optical current transformer market can be segmented on the basis of type, voltage range and application. Get magnetooptical current transformer technology moct seminar report and ppt in pdf and doc. 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.
Alstom grid instrument transformers is ahead of the. The faraday effect causes a rotation in the polarization state through an applied magnetic field. Conclusion this magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers. Fiber optic temperature sensors can be imbedded directly into the. Polarization window for random deployment click to enlarge. Instrument transformer as ct use of instrument transformer measurement of voltage by pt the primary winding is. 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. Get magneto optical current transformer technology moct seminar report and ppt in pdf and doc. The moct consists mainly of electronic and optic part. 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. 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. Light from a source enters an optical fibre polariser, which splits into two linear orthogonally polarized light. 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.
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. Moctmagneto optic current transformer 1 free download as powerpoint presentation. This shows that a conductor carrying current has a magnetic field around it. Extensive bandwidth, able to measure both dc and ac current up to. Alstom grid instrument transformers is ahead of the competition thanks to its innovative, patented optical instrument transformer technology. Magnetooptical current transformer technology moct. Also explore the seminar topics paper on optical technology in current measurement with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electrical and electronics.
If a magnetic compass is placed near a conductor carrying current wire, the needle is deflected. 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. Optical technology in current measurement seminar report. The optical current transformer basically consists of. The moct measures the electric current by means of faraday effect.
Current transformer errors and transformer inrush as. They are widely used in substations and power systems. Download the seminar report for magneto optic current. 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. Karady, life fellow, ieee abstractseveral manufacturers offer optical current transformers octs to replace the conventional magnetic. A current transformer transforms the current down to a reasonable level and provides an isolation barrier. Generally, an ebook can be downloaded in five minutes or less. I have been told that ethernet magnetic transformers are used for baset ethernet when transmission is sent over a lengthy cable. During the forecast period, north america will be closely followed by asia pacific in terms of expected demand. 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.
The transformer is different from a conventional electricmagnetic voltage transformer. Some of the main features of optical current transformer are. The magnetooptical current transformer is based on the faradays effect. Optical current transformeroct is defined as sensors that directly or indirectly use optical sensing methods to measure electric currents. All products, presentation feedback, shb1250, shb1250g80, shb1500. Preliminary measurements of 1200 arms nominal current at 50 hz in highvoltage power line under 300 kv with accuracy of 1. Contents current transformer moct principle,working,design. Optoelectronic current transformer based on remotely. Moct magnetooptical current transformer engineering topics computerit topics electrical topics. Conclusion this magneto optical current transformer eliminates many of the drawbacks of the conventional current transformers. Optical current transformer market global industry. A crystal bgo is used as sensor that is sealed in sf 6 gas container. Option to save your current transformer design for reference and comparison.
Current transformers cts and voltage transformers vts are used extensively in substations for measuring and monitoring voltage and current. Instrument transformer ppt free download as powerpoint presentation. The very basic construction of a dc motor contains a current carrying armature which is. Explore magnetooptical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. Explore optical technology in current measurement with free download of seminar report and ppt in pdf and doc format. Conventional current transformers becomes more and more bulky and costly. 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. Introduction in recent years optical current and voltage. Moct measures the rotation angle of the plane polarized lights caused by the magnetic field and convert it into a signal of few. A comparison of current sense schemes listing advantages and disadvantages of each type. With alexa on your pc you can simplify your life and use your voice to get more done.
Download optical current transformer oct ppt for electrical engineering seminar. Octs are based on faraday effect, interferometric principle, bragg grating and micromechanical sensors with optical readout. 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. Magneto optic current transformer full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. Additionally, i have a circuit that has been used for an 8 wire baset ethernet configuration. A description of our moke instrument includes a novel facility to locate magnetic nanostructures by producing a susceptibility map of the sample surface. 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. The work introduces an optical fiber voltage transformer based on the pockels effect. Topic 4 designing planar magnetics texas instruments. Fiber optic current sensors and optical current transformers. It is clear that each traditional sensor can satisfy only a few of the desirables previously listed. 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. Advantages of optical current and voltage sensors and.
Optical current transformer oct ppt topics for seminar. Explore magneto optical current transformer technology moct with free download of seminar report and ppt in pdf and doc format. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and. A dissertation presented in partial fulfillment of the. Ge has developed a range of digital instrument transformer solutions enabling full iec 61850 implementation and contributing to transmission architectures for the smart grid networks of today and tomorrow.
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