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Recent content by FernandoCFE

  1. FernandoCFE

    Distribution analysis

    Thanks for your answers, I post this question because we used FeederAll made by ABB, and at least this version (2003.0) is not so flexible as other software (I have used DIGSILENT, SKM and EasyPower). Who of you uses or knows FeederAll? What reference has of this software? Thanks in advance,
  2. FernandoCFE

    Distribution analysis

    Hello, Wich are the most used analysis software in distribution systems? Our greater interest: Optimal location of capacitors Minimization of losses Open tie optimization Any comment and any reference about this points is wellcome, thank in advance!
  3. FernandoCFE

    Feeder All Software ABB

    I'm using FeederAll Software from ABB, for studies in a 13.8 kV distribution system, and i need to model a distribution voltage regulator. Somebody can help me with some references (links, literature, etc). Thanks in advance!
  4. FernandoCFE

    Combisensors (Rogowsky Coils)

    I thank you all for your kind replies. I know that Rogowsky sensors are transducers and their secondary side has a voltage signal. However, my main concern is related to the settings of the protection devices that are receiving signal from the Rogowsky coils. In order to setting the protection...
  5. FernandoCFE

    Combisensors (Rogowsky Coils)

    Question: I would like to receive some feedback about your experience using Rogowsky Coils instead of CT's. Currently, we are participating in a project where Rogowsky Coils are used with a ratio of 80 A / 150 mV. My main interes is knowing: Which is the ratio that the current is converted in...
  6. FernandoCFE

    Power Cables

    Hello everybody, I would like you to provide some references (books, papers, catalogs, web sites) about IEC power cable nomenclature. What is the meaning of 1x 185, 2x 350 and NYY, NYZC? Is there any way of matching IEC with AWG cables? We need to know: the meaning of this "code", impedance...
  7. FernandoCFE

    Fault Level comparison

    In a Short Circuit Study, the fault level in the different busbars and his contributions are known. If we think in the contribution of any circuit, only one part of the short circuit current, will flow through the switchgear in this busbar. It is correct to take the fault level from the...
  8. FernandoCFE

    Switchgear Fault Level

    Visit this link: http://www.tyndall.ac.uk/publications/working_papers/wp25.pdf
  9. FernandoCFE

    Aspen to PSS/e conversion

    Hi, I needo to convert an Aspen OneLiner DB to PSS/e V29 and viceversa. Somebody has some experience in this subject? links? etc? Thanks in advance, FM
  10. FernandoCFE

    DigSilent Frequency Scan

    I have read that in a frequency scan, the models of some elements (transmission lines, motors, transformers, etc) should be frequency-dependent models. I use DigSilent Software, and in this simulator this frequency dependency, is possible to include it in each type (of element), creating a...
  11. FernandoCFE

    Fault level Vs Switchgear Capacity

    I have the next situation: In a substation (115 kV system) I found a fault level of 43 kA (symmetrical value) in the busbar, and the switchgears in this substation are 40 kA (symmetrical). The 43 kA are the result of a vectorial sum of the contributions of the derived circuits conected to...
  12. FernandoCFE

    Series reactors to limit short circuit current

    Try www.tde.alstom.com In order to optimize ALSTOM’s design proposal for a current limiting reactor, the following technical information is required: Rated Current (Arms) Rated Impedance (Ω) or Rated Inductance (mH) or Voltage Drop (%) or Short-circuit Power before Reactor (MVA)...
  13. FernandoCFE

    Electrical Short Circuit Sotware?

    I agree with Sett... DIgSILENT Power Factory is a powerful software!! www.digsilent.de
  14. FernandoCFE

    Grading Capacitors

    Hello, Could somebody send me information about the application of "Grading Capacitors" in power breakers? This type of capacitors can be used to increase the switching capacity of the breaker. Thanks in advance, FernandoCFE

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