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Performance Evaluation and Operation of Auto Load Transfer Switch

Received: 10 September 2013     Published: 20 October 2013
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Abstract

An automatic transfer switch is an integral component of an emergency power supply system (EPSS). Auto transfer switch (ATS) consists of different electrical and mechanical components such as magnetic contactor, relay, timer, over under voltage relay etc. Basically maintenance includes scheduled and unscheduled renovation works. Efficiency of auto transfer switch (ATS) can be increased by using proper operation & standard maintenance schedule. Maintenance procedures are normally used to reduce unexpected problems of auto transfer switch. Proper installation, commissioning, operation, maintenance & troubleshooting procedure have been discussed thoroughly in this project report. A large number of real pictures have been shown to make the report more useful to all. It has been tried to provide a good understanding of the ideas about proper operation, maintenance & troubleshooting of auto transfer switch. Some auto transfer switches allow load shedding prioritization of optional circuits, such as heating and cooling equipment. More complex emergency switchgear used in large backup generator installations permits soft loading, allowing load to be smoothly transferred from the utility to the synchronized generators, and back; such installations are useful for reducing peak load demand from a utility. In cases where two independent utility feeders are available, a fast load transfer can be achieved by the use of a static transfer switch. When the critical load includes a load transformer, the transformer is subjected to transients during the transfer interval. Therefore following a load transfer, a transient current flows into the transformer which can cause a post transfer voltage sag. Fault disturbance characteristics which determines voltage difference between the sources and the voltage drop across t he incoming and the outgoing thyristor switches during the load transfer process.

Published in International Journal of Renewable and Sustainable Energy (Volume 2, Issue 6)
DOI 10.11648/j.ijrse.20130206.13
Page(s) 205-211
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

ATS, Earthing Bar, AC & DC Timer Base

References
[1] F. W. Rich, M. S. Kirwen, (1947) "Automatic control of air switches for line sectionalizing and load transfer, "AIEE transactions, vol# 66, ppno #293-302
[2] Hossein Mokhtari, Sashi B. Dewan, (2001)," Effect of regenerative load on a static transfer switch performance "IEEE transactions on power delivery, vol# 6, No# 4.
[3] H. Mokhtari, M. R. Iravani, S. B. Dewan, " Bench mark systems for digital computer simulation of a static transfers switch, " IEEE transactions on power delivery submitted for publication.
[4] H. Mokhtari, "High speed silicon controlled rectifier static transfer switch/ "in IEEE 30TH Annual meeting.
[5] H. Mokhtari, M. R. Iravani, S. B. Dewan, (2003), " Transient behavior of load transfer during sybcycle bus transfer, IEEE transactions on power delivery, vol# 18, No# 4.
[6] H. Mokhtari, S. B. Dewan, M. R. Iravani, (2000), "performance evaluation of thyristor based static transfer switch, "IEEE transactions on power delivery, vol# 15, pp no# 960-966.
Cite This Article
  • APA Style

    Diponkar Paul, Md. Shariful Islam, Syed Khalid Rahman, Md. Saiful Islam, Mir Mohiuddin. (2013). Performance Evaluation and Operation of Auto Load Transfer Switch. International Journal of Sustainable and Green Energy, 2(6), 205-211. https://doi.org/10.11648/j.ijrse.20130206.13

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    ACS Style

    Diponkar Paul; Md. Shariful Islam; Syed Khalid Rahman; Md. Saiful Islam; Mir Mohiuddin. Performance Evaluation and Operation of Auto Load Transfer Switch. Int. J. Sustain. Green Energy 2013, 2(6), 205-211. doi: 10.11648/j.ijrse.20130206.13

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    AMA Style

    Diponkar Paul, Md. Shariful Islam, Syed Khalid Rahman, Md. Saiful Islam, Mir Mohiuddin. Performance Evaluation and Operation of Auto Load Transfer Switch. Int J Sustain Green Energy. 2013;2(6):205-211. doi: 10.11648/j.ijrse.20130206.13

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  • @article{10.11648/j.ijrse.20130206.13,
      author = {Diponkar Paul and Md. Shariful Islam and Syed Khalid Rahman and Md. Saiful Islam and Mir Mohiuddin},
      title = {Performance Evaluation and Operation of Auto Load Transfer Switch},
      journal = {International Journal of Sustainable and Green Energy},
      volume = {2},
      number = {6},
      pages = {205-211},
      doi = {10.11648/j.ijrse.20130206.13},
      url = {https://doi.org/10.11648/j.ijrse.20130206.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijrse.20130206.13},
      abstract = {An automatic transfer switch is an integral component of an emergency power supply system (EPSS). Auto transfer switch (ATS) consists of different electrical and mechanical components such as magnetic contactor, relay, timer, over under voltage relay etc. Basically maintenance includes scheduled and unscheduled renovation works. Efficiency of auto transfer switch (ATS) can be increased by using proper operation & standard maintenance schedule. Maintenance procedures are normally used to reduce unexpected problems of auto transfer switch. Proper installation, commissioning, operation, maintenance & troubleshooting procedure have been discussed thoroughly in this project report. A large number of real pictures have been shown to make the report more useful to all. It has been tried to provide a good understanding of the ideas about proper operation, maintenance & troubleshooting of auto transfer switch. Some auto transfer switches allow load shedding prioritization of optional circuits, such as heating and cooling equipment. More complex emergency switchgear used in large backup generator installations permits soft loading, allowing load to be smoothly transferred from the utility to the synchronized generators, and back; such installations are useful for reducing peak load demand from a utility. In cases where two independent utility feeders are available, a fast load transfer can be achieved by the use of a static transfer switch. When the critical load includes a load transformer, the transformer is subjected to transients during the transfer interval. Therefore following a load transfer, a transient current flows into the transformer which can cause a post transfer voltage sag. Fault disturbance characteristics which determines voltage difference between the sources and the voltage drop across t he incoming and the outgoing thyristor switches during the load transfer process.},
     year = {2013}
    }
    

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  • TY  - JOUR
    T1  - Performance Evaluation and Operation of Auto Load Transfer Switch
    AU  - Diponkar Paul
    AU  - Md. Shariful Islam
    AU  - Syed Khalid Rahman
    AU  - Md. Saiful Islam
    AU  - Mir Mohiuddin
    Y1  - 2013/10/20
    PY  - 2013
    N1  - https://doi.org/10.11648/j.ijrse.20130206.13
    DO  - 10.11648/j.ijrse.20130206.13
    T2  - International Journal of Sustainable and Green Energy
    JF  - International Journal of Sustainable and Green Energy
    JO  - International Journal of Sustainable and Green Energy
    SP  - 205
    EP  - 211
    PB  - Science Publishing Group
    SN  - 2575-1549
    UR  - https://doi.org/10.11648/j.ijrse.20130206.13
    AB  - An automatic transfer switch is an integral component of an emergency power supply system (EPSS). Auto transfer switch (ATS) consists of different electrical and mechanical components such as magnetic contactor, relay, timer, over under voltage relay etc. Basically maintenance includes scheduled and unscheduled renovation works. Efficiency of auto transfer switch (ATS) can be increased by using proper operation & standard maintenance schedule. Maintenance procedures are normally used to reduce unexpected problems of auto transfer switch. Proper installation, commissioning, operation, maintenance & troubleshooting procedure have been discussed thoroughly in this project report. A large number of real pictures have been shown to make the report more useful to all. It has been tried to provide a good understanding of the ideas about proper operation, maintenance & troubleshooting of auto transfer switch. Some auto transfer switches allow load shedding prioritization of optional circuits, such as heating and cooling equipment. More complex emergency switchgear used in large backup generator installations permits soft loading, allowing load to be smoothly transferred from the utility to the synchronized generators, and back; such installations are useful for reducing peak load demand from a utility. In cases where two independent utility feeders are available, a fast load transfer can be achieved by the use of a static transfer switch. When the critical load includes a load transformer, the transformer is subjected to transients during the transfer interval. Therefore following a load transfer, a transient current flows into the transformer which can cause a post transfer voltage sag. Fault disturbance characteristics which determines voltage difference between the sources and the voltage drop across t he incoming and the outgoing thyristor switches during the load transfer process.
    VL  - 2
    IS  - 6
    ER  - 

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Author Information
  • World University of Bangladesh, Dhaka, Bangladesh

  • World University of Bangladesh, Dhaka, Bangladesh

  • World University of Bangladesh, Dhaka, Bangladesh

  • World University of Bangladesh, Dhaka, Bangladesh

  • World University of Bangladesh, Dhaka, Bangladesh

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